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Hot oil pump

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WRY series hot oil pump is the second generation product developed by our factory based on digestion and absorption of foreign oil pumps. The basic structure is a single-stage single-suction cantilever foot support structure. The inlet of the pump is axial suction, and the outlet is vertically upward from the center , Mounted on the same base as the motor.
The support of WRY series hot oil pump adopts the structure of double-end ball bearing support. The front end is lubricated by oil and the rear end is lubricated by grease. There is an oil conducting tube in the middle for observing the sealing condition and recovering the heat transfer oil at any time.
The natural heat dissipation structure is adopted, which changes the traditional water cooling structure, making the structure simple, small in size, low in running cost, stable in performance and reliable in use.

  • Model specifications
  • use
  • Shape and installation dimensions
  • Use and maintenance
  • Installation and inspection
  • Structure diagram
  • Troubleshooting
  • Characteristic curve

WRY series thermal oil pumps have been widely used in China's carrier heating system, and have entered various industrial fields such as petroleum, chemical, rubber, plastic, pharmaceutical, textile, printing and dyeing, road construction, and food. The weakly corrosive high-temperature liquid, the use temperature is less than 350 ℃, is an ideal heat medium oil circulation pump.

型号

WRY heat oil pump specifications performance parameter table

Performance parameters of WRY series heat oil pump

Model
WRY

Flow m3 / h

Lift m

Speed
r / min

Power (_Power) KW

effectiveness
(Efficiency) η%

Cavitation allowance
(Cavitation Msrgin)
NPSH

Shaft power
(Axial power)

Matching power
(Power supply)

26- 20- 100

4.5

15

2825

0.45

0.75

40

0.8

50- 32- 150

8

twenty two

2840

1.0

1.5

42

1.1

50- 32- 160

10

25

2840

1.5

2.2

42

1.2

65- 40- 160

12.5

25

2880

2.5

3

45

1.2

50- 50- 170

12.5

32

2890

3.2

4

45

1..2

65- 40- 190

18

40

2890

4.5

5.5

52

1.4

65- 50- 180

32

32

2900

4.5

5.5

52

1.7

65- 50- 170

40

25

2900

4.5

5.5

52

1.8

65- 50- 160

52

16

2900

4.2

5.5

51

1.9

65- 40- 200

25

50

2900

6.7

7.5

53

1.6

80- 50- 180

40

40

2900

6.7

7.5

63

1.8

80- 50- 170

60

20

2900

6.7

7.5

63

2.8

100- 65- 190

60

38

2930

9.2

11

68

2.6

100- 65- 200

80

40

2930

12.5

15

70

3.1

100- 65- 220

58

50

2930

12.5

15

68

2.4

100- 65- 210

90

45

2930

15.7

18.5

70

3.4

100- 65- 235

58

60

2930

15.5

18.5

62

2.3

100- 65- 230

100

55

2940

19.5

twenty two

70

3.6

125- 100- 190

155

30

2930

17.6

twenty two

72

5.6

100- 65- 240

100

70

2950

25.5

30

69.8

3.5

100- 65- 257

100

80

2950

32.5

37

67

3.5

125- 100- 220

160

45

2950

25.5

37

75

5.5

125- 80- 250

160

60

2970

35.5

45

74

5

125- 80- 270

150

85

2970

46

55

73

4.7

125- 100- 250

200

60

2970

42.8

55

76.8

6

125- 100- 257

260

70

2970

64.3

75

77

7.4

125- 100- 265

200

80

2970

59

75

74

5.8

125- 100- 260

300

70

2970

75.3

90

78.2

8

125- 100- 270

220

85

2970

68

90

76

6

150- 125- 250

350

60

2970

75.2

90

76

9

150- 125- 240

400

50

2970

72

90

76

10.5

150- 125- 270Y

340

76

2970

89.5

110

78.6

8.5

150- 125- 260Y

400

70

2970

88

110

74

9.8

150- 125- 280Y

400

78

2970

106

132

80.6

9.8

150- 125- 285Y

370

85

2970

106

132

80

9.5

Note: Various specifications and models of hot oil pumps can be customized according to user requirements
Note: thermal oil pump with various kinds of sizes and models can be customized on request.


WRY series hot oil pump is the second generation product developed on the basis of our factory's digestion and absorption of foreign oil pumps. The basic structure is a single-stage single-suction cantilever foot support structure. The inlet of the pump is axial suction, and the outlet is vertically upward. The motor is mounted on the base.
The support of the WRY series hot oil pump adopts the structure of double-end ball bearing support. The front end is lubricated with thermal oil and the rear end is lubricated with grease. Note: Because the front bearing is lubricated with thermal oil, the thermal oil used by the customer The kinematic viscosity at ℃ must be 10-15 centimeters (mm² / S). If it is lower than 10 centimeters (mm² / S), the company must be informed when purchasing a heat transfer oil pump.
The natural heat dissipation structure is adopted to change the traditional water cooling structure, so that the structure is simple, the volume is small, the running cost is low, the performance is good, and the use is reliable.
WRY series hot oil pump, (1) The combination of packing seal and mechanical seal is adopted. The packing seal adopts high temperature resistant packing, which has good thermal adaptability, while the mechanical seal adopts high mechanical strength and good wear resistance. The alloy material ensures the sealing performance under high temperature environment.
(2) The third generation of polytetrafluoroethylene (PTFE for short) is used as a lip seal, which has made a leap in sealing performance, which is 25 times more reliable than rubber seals and has extremely strong corrosion resistance.

WRY series heat oil pump outline dimension installation basic table

Installation dimensions


Oil pump model
Model of
Oil Pump

Motor frame size / power
Motor
No.of Base / Power

Oil pump outline size code and value
Outline and Installation Dimensions of Oil Pump

L

L1

L2

L3

B1

B2

B3

A

a

h1

h2

H1

H2

D1

D2

n1 / d1

n2 / d2

n3 / d3

26- 20- 100

YX3- 80L- 2 / 0.75

700

630

108

415

200

225

270

75

80

95

25

285

175

φ 85

φ 75

4- φ 14

4- φ 14

4- φ 14

50- 32- 150

YX3- 90S- 2 / 1.5

800

700

110

512

180

245

295

80

90

132

40

360

200

φ 125

φ 100

4- φ 18

4- φ 18

4- φ 16

50- 32- 160

YX3- 90L- 2 / 2.2

800

700

110

512

180

245

295

80

90

132

40

360

200

φ 125

φ 100

4- φ 18

4- φ 18

4- φ 16

65- 40- 160

YX3- 100L- 2/3

1000

810

110

575

315

345

410

80

100

150

40

420

240

φ 145

φ 110

8- φ 18

4- φ 18

4- φ 20

50- 50- 170

YX3- 112M- 2/4

1000

845

125

600

315

360

415

80

100

152

40

442

247

φ 125

φ 125

4- φ 18

4- φ 18

4- φ 20

65- 40- 190

YX3- 132S1- 2 / 5.5

1015

815

108

600

280

340

372

82

100

160

30

471

225

φ 145

φ 110

4- φ 18

4- φ 18

4- φ 20

65- 50- 180

YX3- 132S1- 2 / 5.5

1100

870

113

645

315

350

415

80

100

160

40

410

245

φ 145

φ 125

8- φ 18

4- φ 18

4- φ 20

65- 50- 170

YX3- 132S1- 2 / 5.5

1100

870

113

645

315

350

415

80

100

160

40

410

245

φ 145

φ 125

8- φ 18

4- φ 18

4- φ 20

65- 50- 160

YX3- 132S1- 2 / 5.5

1100

870

113

645

315

350

415

80

100

160

40

410

245

φ 145

φ 125

8- φ 18

4- φ 18

4- φ 20

65- 40- 200

YX3- 132S1- 2 / 5.5

1015

815

108

600

280

340

372

82

100

160

30

471

225

φ 145

φ 110

4- φ 18

4- φ 18

4- φ 20

80- 50- 180

YX3- 132S2- 2 / 7.5

1100

870

113

645

315

350

415

80

100

160

40

410

245

φ 160

φ 125

8- φ 18

4- φ 18

4- φ 20

80- 50- 170

YX3- 132S2- 2 / 7.5

1100

870

113

645

315

350

415

80

100

160

40

410

245

φ 160

φ 125

8- φ 18

4- φ 18

4- φ 20

100- 65- 190

YX3- 160M1- 2/11

1200

1049

170

720

355

440

510

100

120

180

40

510

285

φ 180

φ 145

8- φ 20

8- φ 18

4- φ 22

100- 65- 200

YX3- 160M1- 2/15

1200

1049

170

720

355

440

510

100

120

180

40

510

285

φ 180

φ 145

8- φ 20

8- φ 18

4- φ 22

100- 65- 220

YX3- 160M1- 2/15

1200

1049

170

720

355

440

510

100

120

180

40

510

285

φ 180

φ 145

8- φ 20

8- φ 18

4- φ 22

100- 65- 210

YX3- 160L- 2 / 18.5

1300

1180

135

910

415

485

570

110

125

200

40

570

320

φ 180

φ 145

8- φ 20

8- φ 18

4- φ 22

100- 65- 235

YX3- 160L- 2 / 18.5

1300

1180

135

910

415

485

570

110

125

200

40

570

320

φ 180

φ 145

8- φ 20

8- φ 18

4- φ 22

100- 65- 230

YX3- 180M- 2/22

1300

1180

135

910

415

485

570

110

125

200

40

570

320

φ 180

φ 145

8- φ 20

8- φ 18

4- φ 22

125- 100- 190

YX3- 180M- 2/22

1300

1180

135

910

415

485

570

110

125

200

40

570

320

φ 220

φ 180

8- φ 20

8- φ 18

4- φ 22

100- 65- 240

YX3- 200L1- 2/30

1300

1180

125

920

415

485

570

100

125

200

40

570

320

φ 180

φ 145

8- φ 20

8- φ 18

4- φ 22

100- 65- 257

YX3- 200L2- 2/37

1300

1180

125

920

415

485

570

100

125

200

40

570

320

φ 180

φ 145

8- φ 20

8- φ 18

4- φ 22

125- 100- 220

YX3- 200L2- 2/37

1300

1180

125

920

415

485

570

100

125

200

40

562

312

φ 220

φ 180

8- φ 20

8- φ 18

4- φ 22

125- 80- 250

YX3- 225M- 2/45

1513

1245

152

930

480

520

620

140

144

225

45

620

345

φ 220

φ 160

8- φ 22

8- φ 18

4- φ 24

125- 80- 270

YX3- 225M- 2/45

1513

1245

152

930

480

520

620

140

144

225

45

620

345

φ 220

φ 160

8- φ 22

8- φ 18

4- φ 24

125- 100- 250

YX3- 250M- 2/55

1580

1400

230

930

550

580

690

144

144

225

45

654

370

φ 220

φ 190

8- φ 22

8- φ 22

4- φ 24

125-100-257

YX3-280S-2 / 75

1628

1506

278

935

540

500

630

690

123

144

230

50

715

430

φ 220

φ 190

8- φ 22

8- φ 22

4- φ 24

125-100-265

YX3-280S-2 / 75

1628

1506

278

935

540

500

630

690

123

144

230

50

715

430

φ 220

φ 190

8- φ 22

8- φ 22

4- φ 24

125-100-260

YX3-280S1-2 / 90

1628

1506

278

935

540

500

630

690

123

144

230

50

715

430

φ 220

φ 190

8- φ 22

8- φ 22

4- φ 24

125-100-270

YX3-280S1-2 / 90

1628

1506

278

935

540

500

630

690

123

144

230

50

715

430

φ 220

φ 190

8- φ 22

8- φ 22

4- φ 24

150-125-250

YX3-280S1-2 / 90

1628

1506

278

935

540

500

630

690

133

150

236

50

746

436

φ 240

φ 210

8- φ 22

8- φ 22

4- φ 24

150-125-240

YX3-280S1-2 / 90

1628

1506

278

935

540

500

630

690

133

150

236

50

746

436

φ 240

φ 210

8- φ 22

8- φ 22

4- φ 24

150-125-270Y

YX3-315S-2 / 110

2017

1754

330

1100

680

556

730

800

133

150

250

45

800

475

φ 240

φ 210

8- φ 22

8- φ 18

4- φ 28

150-125-260Y

YX3-315S-2 / 110

2017

1754

330

1100

680

556

730

800

133

150

250

45

800

475

φ 240

φ 210

8- φ 22

8- φ 18

4- φ 28

150-125-280Y

YX3-315M1-2 / 132

2067

1754

330

1100

680

556

730

800

133

150

250

45

800

475

φ 240

φ 210

8- φ 22

8- φ 18

4- φ 28

150-125-285Y

YX3-315M1-2 / 132

2067

1754

330

1100

680

556

730

800

133

150

250

45

800

475

φ 240

φ 210

8- φ 22

8- φ 18

4- φ 28


外型及安装2

Pump use and maintenance <br> After the pump and pipeline are installed, whether the water pressure or air pressure is used, the inlet and outlet valves of the pump must be closed before the pressure test is performed to prevent damage to the seals and oil leakage.
1. Preparation for startup (1) Clean up the site, unscrew the bearing seat screws, and add clean thermal oil as lubricant. When the large oil pump above 110KW is filled with lubricating oil, it will be injected from one hole until the other hole overflows. During the filling process, stroke the coupling by hand, and tighten the screw bolt when there is no more gas in the hole.
(2) Check if the motor rotation is consistent with the pump rotation direction.
(3) The coupling pump should be moved flexibly by hand.
(4) Before driving, the pump should be filled with the heat-conducting oil delivered to drive out the air in the pump. At this time, the gate valve of R on the outlet pipe should be closed.
(5) The heat transfer oil to be transported should be heated evenly before driving. The preheating is carried out continuously through the pump body with the heat transfer oil being transported. Avoid severe temperature fluctuations. If there is an abnormal situation, stop the machine immediately for inspection.
Preheating standard: The temperature of the pump casing must not be lower than the inlet oil temperature of 40 ℃, and the preheating speed is 50 ℃ / hour. When driving and preheating, the side screws on the pump bracket should be loosened by 0.3-0.5mm. Tighten the screws.
(6) Before driving, check whether the foundation and bolts are loose and whether the seal is normal.
2. Start-up (1) Comprehensively check whether all preparations have been completed.
(2) Turn on the switches of various instruments.
(3) Turn on the power. When the pump reaches normal speed and the instrument shows a considerable pressure, gradually open the gate valve on the output pipeline and adjust it to the required working conditions. With the gate valve on the output line closed, the pump cannot operate continuously for more than 3 minutes.
(4) During the initial operation of the pump, slowly heat the equipment in the production process to 100 ~ 130 ° C, and keep running at this temperature. The water in the heat-transfer oil is completely dehydrated and degassed before the equipment is heated to operation. temperature.
(5) After the unit is put into use for the first time and after it is in operation (or 3-4 hours of actual trial operation), it should be stopped again to check whether the coaxiality of the two couplings has changed. Adjust the coaxiality of the coupling with the regulations in the inspection until the requirements are met and the pump shaft can be easily turned by hand.
(6) During the startup process, pay attention to the power reading and vibration of the motor at all times. The vibration value does not exceed 0.6 mm. If there is any abnormality, stop and check.
3. Maintenance (1) The pump shaft is provided with a stuffing box at the front end, which has a more reliable sealing performance. At the same time, a mechanical seal and an oil seal device are provided in the bearing seat, so a large amount of leakage cannot occur, and a small amount of leakage can pass through the leakage nozzle. Eject to receive. It is normal to have a small amount of leakage at the beginning of the operation. After a certain period of time, the sealing surface will run in and the leakage will be reduced or stopped.
(2) The heat transferred from the conveying medium to the pump cover and the bearing is dissipated by the surface of the pump cover and the bearing seat, so that the temperature of the bearing seat is adapted to the temperature of the shaft sealing performance. Therefore, when selecting the installation position of the pump, the heat of the pump cover and the bearing seat should be easily diffused without any heat storage phenomenon.
(3) Two ball bearings are provided in the bearing seat. One ball bearing on the pump impeller side is lubricated with the heat-conducting oil delivered, and one ball bearing on the coupling side is lubricated with high-temperature grease.
After 3000 hours of operation for each ball bearing, it must be removed and cleaned with diesel, and the contact surface should be inspected for damage. If it is damaged, it must be replaced with a new bearing.
When installing the ball bearing on the impeller side, the side with the dust cover should be injected with heat-conducting oil to the front of the impeller machine.
The ball bearing on the coupling side uses composite calcium-based high-temperature grease (ZFG-4). When the bearing is reinstalled, the side with the dust cover should also be installed toward the impeller side. When installing, fill with grease (about 1 / 2 Space between ball bearing and housing>.
After the bearing has been running for 48 hours, use a grease gun to fill the grease cup on the bearing cap with replenishing grease.
(4) The gate valve on the input pipe is not allowed to adjust the flow to avoid cavitation.
(5) The pump should not be continuously operated at less than 30% of the designed flow rate. If it is necessary to operate under this condition, a bypass pipe should be installed at the outlet and the flow rate should reach the above minimum value.
(6) Always check the loosening of the anchor bolts, whether the temperature of the pump casing is consistent with the inlet temperature, the fluctuation of the outlet pressure gauge and the vibration of the pump.
(7) Pay attention to the presence of noise during the operation of the pump. If abnormal conditions are found, they should be handled in time.
4. Stop (1) Turn off the power.
(2) Drain the liquid in the pump, clean it, and rotate the impeller 180 ° periodically to prevent the shaft from deforming until the pump body is completely cooled.

Disassembly and assembly of the pump 1. Disassembly sequence of the pump (1) Drain the liquid in the pump and the lubricant in the bearing bracket.
(2) Unscrew the motor fixing bolts, move the motor away from the base, and remove the two coupling halves.
(3) Remove the pump cover connection, loosen the bearing seat bracket bolts, and pull the pump cover together with the bearing bracket and rotor part out of the pump body.
(4) Unscrew the impeller nut and remove the impeller.
(5) Unscrew the pump cover and bearing housing bolts, and remove the pump cover.
(6) Unscrew the right end bearing cap bolt and remove the bearing cap.
(7) Remove the bearing retaining ring.
(8) Press the pump shaft out of the bearing seat.
(9) Press the pump shaft out of the bearing and remove the mechanical seal moving ring and "O" ring spring (not damaged, no need to remove it).
(10) Press out the "O" ring of the static ring in the bearing seat.
2. Pump assembly <br> The pump can be assembled in the reverse order of disassembly. When disassembling and reassembling, check the mechanical seals and parts for failure. If any failure occurs, be sure to replace the new parts. Be careful when installing and do not knock to avoid damaging the parts.

Unit installation and inspection 1. The quality of the pump installation has a very important impact on the smooth operation and service life of the pump, so the installation work must be carried out carefully and must not be rash.
2. The installation height, length and diameter of the suction pipe of the pump should meet the calculated values and strive to be short. The distance from the center of the pipe elbow to the head of the pump base should generally be less than 1 meter with welded iron plates and supports. As shown in Figure 3.
3. The suction and discharge pipelines should also have pipe racks or supports. The pump is not allowed to bear the load of the pipeline.
Warning: If the stress caused by thermal expansion on the pipeline is transmitted to the pump, it will cause deformation of the pump, damage the couplings and bearings, and the pump shaft, so be sure to support it when approaching the pump body.
4. The installation site should be spacious enough to facilitate maintenance work and good heat dissipation.
5. Installation sequence:
(1) Put the unit on the foundation with anchor bolts, and place a pair of pads between the base and the foundation for alignment.
(2) Loosen the coupling and place it on the pump shaft and the base with a spirit level, adjust the unit to the level by adjusting the wedge pad, and tighten the anchor bolts appropriately to prevent walking.
(3) Fill the base and anchor bolt holes with concrete.
(4) After the concrete is dry, check the foundation and anchor bolts for defects or looseness. After passing the inspection, tighten the anchor bolts and check the level of the pump again.
(5) The coaxiality of the pump shaft and the motor shaft is corrected. The circle runout on the outer circle of the coupling must not exceed 0.1 mm when tested with a leveling rule. The gap between the two coupling planes must be 2 to 3 mm. During the calibration of the coupling by 90 ° difference between the leveling ruler, the circle runout in the other direction must not exceed 0.1 mm. When adjusting, the motor is generally adjusted relative to the pump. The coupling method can be adjusted by using a flat pad The coaxiality of the device.
(6) After connecting the pipeline and determining the rotation direction of the prime mover, connect the coupling and check the coaxiality of the outer circle of the coupling again.
Note: When the couplings are not concentric, they will cause excessive wear on the couplings and elastic blocks, which will also cause damage to the bearings and shaft seals, and the pump shaft will break. It is strictly prohibited to drive if the coaxiality does not meet the installation requirements.
(7) In order to prevent sundries from falling into the machine during installation, all holes of the unit should be covered.
(8) The pump should be cleaned in and out of the pipeline before the pump is turned on. Especially for welded pipelines, burrs and welding slag and oxide scale should be handled. Filters should be added at the inlet of the pump to prevent debris from entering the pump.

结构图1

结构图2

malfunction the reason Method of exclusion
I. Insufficient pumping flow and low pressure 1.The pump output pipeline is of great help 1-1 Is the layout of the output pipeline reasonable? The light pipe cannot be too small, and the pipe turning angle cannot be too large.
1-2 Check if the valve is flexible
1-3 Open the outlet valve properly until the operating point
2. There is more water and gas in the oil 2-1 Control the moisture and oil bubbles in the oil at a temperature of about 100 ℃ ~ 120 ℃. After slowly draining, the temperature can be gradually increased to the operating point.
2-2 Whether the pipeline arrangement is reasonable
2-3 Install the exhaust valve
3. Pipes and impeller flow channels are blocked 3-1 Remove debris in pipes and impeller flow channels
3-2 Check the valve
4.The inlet filter is blocked 4-1 Regularly clean the filter
4-2 The number of meshes cannot be too dense
5, the pump body inlet sealing ring and impeller sealing ring severely worn 5-1 Replace worn parts
5-2 When the suction diameter of the pump is less than or equal to 100mm, the gap between the ring and the ring should be replaced when the gap is greater than 1.5mm.
6.Incorrect speed and steering 6-1 Check the speed value (measured with a tachometer)
6-2 Check the line connection
6-3 Whether to run in reverse
7.Density and viscosity of the conveyed oil deviates from the basic value 7-1 When the medium deviates from the order parameters and a failure occurs, please consult our factory
8. Device NPS is too low (cavitation margin is too low) 8-1 Check the liquid level in the upper tank and adjust if necessary
8-2 Pump inlet valve is fully open and check the filter
8-3 When the resistance from the high tank to the pump inlet pipe is too large, re-lay the pipe
Pump vibration and noise 1.The bottom feet are not installed smoothly 1-1 Correcting the bottom plate smoothness
2.The compression screws of each part are loose 2-1 Adjust the bolts for even compression
3. The connection between the pipeline and the inlet and outlet of the pump is seriously deviated, and the resistance is large. 3-1 Adjust the verticality of the connection between the pipeline and the pump outlet
3-2 Erection of support frame (pump cannot bear pipeline pressure)
4.The coaxiality deviation between the pump and the motor and no gap between the end faces of the coupling 4-1 Adjust the coaxiality between pump and motor
4-2 Adjust the specified end gap between the couplings to about 3mm
5.The pump shaft and bearing are damaged 5-1 Replace pump shaft or bearing
6.There are sundries in the pump 6-1 Remove debris from the pump
7, the flow rate is unstable 7-1 Exclude air bubbles and air from the tube
7-2 The pipeline is not smooth and there are many bends
8, the buffer ring is damaged 8-1 Replace the buffer ring
Third, the leak of the pump 1.The compression bolts of each part are loose 1-1 Tighten bolts evenly
2.The gasket is damaged 2-1 Replace the gasket
3. Parts of gas sand hole 3-1 Weld repair where possible. And replacement parts
4, pump shaft and oil seal wear 4-1 Replace pump shaft and oil seal
5. Deviation of coaxiality between pump and motor 5-1 Correction of coaxiality requirements
6.The connection between the pipeline and the pump is not straight, causing a large torque of the pump 6-1 Adjust the straightness and balance of pipeline and pump
6-2 Tighten bolts evenly
Four, bearing heating, temperature rise 1.Coaxiality deviation between pump and motor 1-1 Adjust the coaxiality and balance
2. Long-term oil loss in the bearing cavity 2-1 Regular oiling (grease) should not be too much or less
3. Running ring of bearing inner and outer shell 3-1 Replacement of bearings and related wear parts
4, the axial force is too large 4-1 Cleaning, adjusting the gap of the seal ring is required between 0.2 and 0.3mm
4-2 Correct the diameter of the impeller balance hole and verify the static balance value
5.Bearing damage 5-1 Replace bearing
V. Pump operation is unstable, operation is stuck, and the load is too heavy 1. There is more water in the oil 1-1 Slowly drain the water and gas in the oil through the high-level trough (oil temperature is controlled at about 100 ℃ ~ 120 ℃) After exhausting the water and gas, gradually warm up to the operating point
2. The clearance between the pump and the impeller seal ring is too small or too large. Too small thermal expansion stuck, too large gaps unstable operation 2-1 Adjust the gap of the seal ring between 0.2 and 0.3

2-2 Repair or replace worn parts
3.Bearing damage 3-1 Replace bearing
4.Imbalance of impeller operation 4-1 Impeller seal ring is severely worn, correct or replace worn parts

4-2 Retest the static balance value
5. The pump and piping device are severely deviated, resulting in an increase in the pump's torque (special attention should be paid during installation) 5-1 Re-adjust the verticality and balance of the deviation between the pump and the pipeline, and set up the support frame

5-2 Re-adjust the coaxiality of the pump and the motor
6. Improper wiring of electrical circuits and poor quality of electrical components, loose bolts 6-1 Check whether the wiring of the electrical cabinet box is wrong

6-2 Replacement of quality electrical components
7.Motor failure 7-1 Replace the motor
8.The pump running direction is incorrect 8-1 Adjust the motor steering
9. Density and viscosity of heat transfer oil deviate from basic value 9-1 Replace the oil or pump

9-2 Contact the manufacturing pump factory
6. Oil and gas spillage and unstable pressure in high-level oil tanks 1. There is more water in the oil 1-1 When the water in the oil is heated to 100 ℃ ~ 120 ℃, it can be gradually heated up to the operating point after it is drained slowly.
2. Oil and gas spills 2-1 The heating speed is too fast and the temperature is too high. Generally, it is necessary to drain the water in the oil for about 1-4 days.
3.Unstable pressure 3-1 drain the water and air in the oil

3-2 Inlet filter is blocked

3-3 There are many wear parts in the pump, replace the wear parts
Insufficient flow head 1.The pipeline and impeller flow path are not smooth. 1-1 Cleaning pipes and impeller flow channels
2. The imported filter is clogged and the meshes are too dense 2-1 Cleaning imported filter

2-2 Replace the filter with less mesh
3. The running direction is incorrect 3-1 Correcting motor steering
4. The device NPSH is too low (high vacuum on the suction side of the pump) 4-1 Check the liquid level in the upper tank and adjust if necessary

4-2 Pump inlet valve fully open

4-3 When the resistance from the high groove to the pump inlet pipe is too large, re-lay the pipe
5. The pipeline conveying distance is too long and there are too many elbows 5-1 device relay pump (can consult with production pump factory)

5-2 Change of pipeline facilities
Eight, the motor generates heat and trips 1.Three-phase wiring head bolts are loose and connected to the wrong line 1-1 Check the wiring in the electrical box for incorrect connections and tighten the mounting bolts
2. Poor thermal relay quality 2-1 Replace Thermal Relay
3.Poor motor quality 3-1 Replace the motor
4. There are sundries in the pump, the rotation is not flexible, and the motor load is increased 4-1 Remove debris from the pump and adjust the coaxiality deviation
Nine, too much pressure Inaccurate pressure gauge position 1-1 should be behind the valve
1-2 Replace the impeller or reduce the outer diameter
1-3 Close the inlet and outlet valves properly
1-4 If the outlet pipe is properly enlarged, the outlet pressure will be reduced.
Ten, the temperature cannot be increased after the furnace is refueled 1.Heat transfer oil generally needs to be changed once every three years
2. Change the oil at one time and do not leave the original used oil in it.
3. Cleaning the coke in the furnace and pipeline is one of the main reasons


  • WRY26-20-100 (0.75kw)
  • WRY50-32-150 (1.5kw)
  • WRY50-32-160 (2.2kw)
  • WRY50-50-170 (4kw)
  • WRY65-40-160 (3kw)
  • WRY65-50-180 (5.5kw)
  • WRY80-50-180 (7.5kw)
  • WRY100-65-190 (11kw)
  • WRY100-65-200 (15kw)
  • WRY100-65-220 (15kw)
  • WRY100-65-230 (22kw)
  • WRY100-65-240 (30kw)
  • WRY100-65-257 (37kw)
  • WRY125-80-250 (45kw)
  • WRY125-100-250 (55kw)
  • WRY125-100-257 (75kw)
  • WRY125-100-260 (90kw)
  • WRY125-100-270 (90kw)
  • WRY150-125-270A (110kw)
  • WRY150-125-280A (132kw)
  • WRY250-200-500 (160kw)

Changzhou Wushi Heat Transfer Oil Pump Co., Ltd. Changzhou Wujin No.1 Heat Oil Pump Factory (Heat Transfer Oil Factory) Address: No. 6 Yinban Section, New Oriental Village, Henglin Town, Changzhou City
Address: No. 6 Yinban Section, New Oriental Village, Henglin Town, Changzhou City Sales: 0519-81238082, 0519-81238280 Sales: 0519-88722815, 0519-88722915
Fax: 0519-88782599 Mobile: 13815028333 Email: czwsdry@163.com Website: www.wuyingpump.com kfdyappi.com
Copyright (C) Thermal oil manufacturer-Changzhou Wushi Thermal Oil Pump Co., Ltd.Record number : 苏 ICP 备 18025971 号 -1