CN111894854A - Intelligent temperature control system of vacuum pump - Google Patents
Intelligent temperature control system of vacuum pump Download PDFInfo
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- CN111894854A CN111894854A CN202010547717.3A CN202010547717A CN111894854A CN 111894854 A CN111894854 A CN 111894854A CN 202010547717 A CN202010547717 A CN 202010547717A CN 111894854 A CN111894854 A CN 111894854A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 105
- 230000008859 change Effects 0.000 claims abstract description 7
- 239000000498 cooling water Substances 0.000 claims description 59
- 238000007789 sealing Methods 0.000 claims description 15
- 239000010865 sewage Substances 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 12
- 238000011010 flushing procedure Methods 0.000 claims description 9
- 230000000670 limiting effect Effects 0.000 claims description 6
- 239000003595 mist Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 abstract description 7
- 238000005086 pumping Methods 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000008676 import Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011197 physicochemical method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/04—Heating; Cooling; Heat insulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/03—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/20—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by changing the driving speed
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention relates to the field of vacuum pumps and discloses an intelligent temperature control system of a vacuum pump.A temperature sensor sends a measured temperature value to a control device, the control device compares the received temperature value with a temperature threshold value, and if the temperature value is higher than the temperature threshold value, the control device increases the numerical value of a flow threshold value; on the contrary, if the temperature value is lower than the temperature threshold value, the control device reduces the numerical value of the flow threshold value, the intelligent temperature control system of the vacuum pump monitors the drainage flow of the water outlet pipe through the water flowmeter and feeds the drainage flow back to the control device, so that the control device can dynamically adjust the output frequency of the frequency converter according to the actual drainage flow so as to adjust the running power of the water pump; the temperature sensor is used for monitoring the temperature in the oil tank and feeding the temperature back to the control device, so that the real-time monitoring of the temperature in the pump body can be realized, the control device can dynamically adjust the flow threshold value in the control device according to the temperature change in the oil tank, the vacuum pump is maintained in a state with proper temperature, and the maximum capability of the vacuum pump for pumping water vapor is exerted.
Description
Technical Field
The invention relates to the field of vacuum pumps, in particular to an intelligent temperature control system of a vacuum pump.
Background
The vacuum pump refers to a device or equipment for obtaining vacuum by pumping a pumped container by using a mechanical, physical, chemical or physicochemical method. In general, a vacuum pump is a device for improving, generating and maintaining a vacuum in a certain closed space by various methods. The utility model discloses a utility model patent that bulletin number is CN202360398U discloses a rotary-vane vacuum pump, including the pump body and oil tank, pump body top is equipped with the oil tank, the oil tank top is equipped with the gas vent, pump body one end is connected with the derailleur, the pump body outside is equipped with heat abstractor, pump body surface one side is equipped with the cooling water import, pump body surface opposite side is equipped with the cooling water export, cooling water import department is equipped with cooling device, be equipped with the section of thick bamboo that admits air in the oil tank, the section of thick bamboo that admits air and pump body.
Foretell vacuum pump, cooling water import department is provided with the inlet tube, and the cooling water exit department is provided with the outlet pipe, and the inlet tube is connected respectively in cooling tower's delivery port and water inlet with the outlet pipe, is provided with the water pump in inlet tube department to the cooling water in the middle of with cooling tower pumps to the built-in coolant tank of the pump body through the cooling water import, thereby adjusts the temperature in the pump body through coolant tank's heat exchange. Meanwhile, the cooling water in the cooling water tank is discharged through a cooling water outlet of the pump body and is sent into the cooling water tower, so that water circulation is formed.
However, in the actual use process, the temperature in the vacuum pump often changes, and if the temperature in the pump body is high and the operation power of the water pump is insufficient, the water circulation is insufficient, so that the cooling effect in the pump body is poor, and the service life of the vacuum pump is easily influenced; on the contrary, if the temperature in the pump body is lower and the operation power of the water pump is too high, the electric energy is easily wasted, and therefore, a certain improvement space exists.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the intelligent temperature control system of the vacuum pump, which can dynamically adjust the operation power of the water pump according to the actual temperature change in the pump body, thereby ensuring the cooling effect in the pump body and saving electric energy.
In order to solve the technical problem, the invention is solved by the following technical scheme:
an intelligent temperature control system of a vacuum pump comprises a pump body, an oil tank and a cooling water tower, wherein a cooling water inlet and a cooling water outlet are arranged on the outer wall of the pump body; the water outlet pipe is provided with a water flow meter for monitoring the drainage flow of the water outlet pipe and sending a flow signal to the control device, the oil tank is provided with a temperature sensor for monitoring the temperature change in the oil tank and sending the measured temperature value to the control device, the control device is coupled with a frequency converter, and the water pump is coupled to a signal output end of the frequency converter; a temperature threshold and a flow threshold are preset in the control unit;
the water flow meter sends the measured flow signal value to the control device, the control device compares the received flow signal value with a flow threshold value, and if the flow signal value is larger than the flow threshold value, the control device controls the frequency converter to output a low-frequency voltage signal so as to enable the water pump to run at a low speed; on the contrary, if the flow signal value is smaller than the flow threshold value, the control device controls the frequency converter to output a high-frequency voltage signal so as to enable the water pump to run at a high speed;
the temperature sensor sends the measured temperature value to the control device, the control device compares the received temperature value with a temperature threshold value, and if the temperature value is higher than the temperature threshold value, the control device increases the numerical value of the flow threshold value; conversely, if the temperature value is lower than the temperature threshold, the control device decreases the value of the flow threshold.
Preferably, the pump body is provided with an air inlet and an air outlet, and the air outlet is connected with an oil mist filter.
Preferably, an exhaust pressure gauge is provided at the exhaust port to monitor the exhaust pressure.
Preferably, the water inlet pipe is further provided with a filtering device, and the filtering device is arranged between the water pump and the cooling water tower.
Preferably, the filtering device comprises a connecting pipe connected with the water inlet pipe, and a filter screen is arranged in the connecting pipe.
Preferably, the filter screen is recessed towards the water pump to form the cavity.
Preferably, a one-way conduction assembly is arranged in the connecting pipe at a position close to the cooling water tower, the one-way conduction assembly comprises an installation plate fixed above the inner side wall of the connecting pipe and a guide plate pivoted to the lower side edge of the installation plate, and the movable end of the guide plate is provided with an arc surface; a limiting convex point is arranged below the inner side wall of the connecting pipe and on one side close to the cooling water tower so as to limit the position of the guide plate; a drain pipe extends from the upper side wall of the connecting pipe, is positioned between the filter screen and the one-way conduction assembly, and is provided with a sealing cover; a flushing pipe is arranged on the upper side wall of the connecting pipe and on one side close to the water pump, and the port of the flushing pipe is connected with a self-sealing joint to be externally connected with an external water source.
Preferably, the guide plate is provided with a balancing weight close to the surface of the water pump.
Due to the adoption of the technical scheme, the invention has the remarkable technical effects that: the water discharge flow of the water outlet pipe is monitored by the water flowmeter and fed back to the control device, so that the control device can dynamically adjust the output frequency of the frequency converter according to the actual water discharge flow, and the running power of the water pump is adjusted; because the oil temperature in the oil tank can reflect the operating temperature in the pump body in real time, the temperature in the oil tank is monitored by the temperature sensor and fed back to the control device, the real-time monitoring of the temperature in the pump body can be realized, and the control device can dynamically adjust the flow threshold value in the control device according to the temperature change in the oil tank so as to achieve the purpose of dynamically adjusting the operating power of the water pump. The electric energy of the water pump during operation is saved, and the temperature in the pump body can be effectively controlled.
Drawings
FIG. 1 is a schematic view of the overall structure of the present embodiment;
FIG. 2 is a schematic structural diagram of a filtering apparatus according to the present embodiment;
fig. 3 is a system architecture diagram of the present embodiment.
The names of the parts indicated by the numerical references in the above figures are as follows: 1. a pump body; 2. an oil tank; 3. a cooling water tower; 4. a cooling water inlet; 5. a cooling water outlet; 6. a water inlet pipe; 7. a water outlet pipe; 8. a control device; 9. a water pump; 10. a water flow meter; 11. a temperature sensor; 12. a frequency converter; 13. an air suction port; 14. an exhaust port; 15. an oil mist filter; 16. an exhaust pressure gauge; 17. a filtration device; 18. connecting the pipe; 19. a filter screen; 20. a cavity; 21. a unidirectional conducting component; 22. mounting a plate; 23. a guide plate; 24. a circular arc surface; 25. limiting salient points; 26. a blow-off pipe; 27. a sealing cover; 28. a flush pipe; 29. a self-sealing joint; 30. a balancing weight; 31. and (4) a hinge.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1, fig. 2 and fig. 3, the intelligent temperature control system of a vacuum pump disclosed in this embodiment includes a pump body 1, an oil tank 2 and a cooling tower 3, wherein the oil tank 2 is disposed above the pump body 1, and the two are connected by an oil path; when the pump body 1 began the operation, the pump oil in the oil tank 2 can enter into the pump body 1 through the oil circuit, after the internal circulation of the pump body 1 was accomplished, get back to the oil tank 2 again in, can lubricate the spare part in the pump body 1, can take away a part of heat in the pump body 1 again, therefore the temperature in the oil tank 2 can be along with the synchronous rising of the temperature of the pump body 1, can indirectly acquire the temperature variation in the pump body 1 through the temperature variation in the monitoring oil tank 2. The outer wall of the pump body 1 is provided with a cooling water inlet 4 and a cooling water outlet 5, the cooling water inlet 4 is provided with a water inlet pipe 6, the cooling water outlet 5 is provided with a water outlet pipe 7, and the water inlet pipe 6 and the water outlet pipe 7 are respectively connected to a water outlet and a water inlet of the cooling water tower 3. The water inlet pipe 6 is provided with a water pump 9 for pumping the cooling water in the cooling water tower 3 into the cooling water inlet 4. The cooling water in the cooling water tower 3 can be pumped to a cooling water tank (not shown) arranged in the pump body 1 through a water inlet pipe 6 by a water pump 9, and the temperature in the pump body 1 is adjusted by the cooling water in the cooling water tank (not shown) through heat exchange, so that the overhigh temperature of the pump body 1 is avoided. Meanwhile, cooling water in the cooling water tank (not shown) flows back to the cooling water tower 3 through the water outlet pipe 7, so that water circulation is formed, and the cooling effect on the pump body 1 is improved.
Furthermore, the intelligent temperature control system of the vacuum pump further comprises a control device 8, and the control device 8 can be a chip with data processing capability, including but not limited to a single chip microcomputer, a PLC, a CPU, an MCU, an ARM, and the like. A water flow meter 10 is arranged on the water outlet pipe 7 to monitor the drainage flow of the water outlet pipe 7 and send a flow signal to the control device 8, a temperature sensor 11 is arranged on the oil tank 2 to monitor the temperature change in the oil tank 2 and send the measured temperature value to the control device 8, a frequency converter 12 is coupled to the control device 8, and a water pump 9 is coupled to a signal output end of the frequency converter 12; a temperature threshold and a flow rate threshold are preset in the control unit. In this embodiment, the water flow meter 10 sends the measured flow signal value to the control device 8, the control device 8 compares the received flow signal value with the flow threshold, and if the flow signal value is greater than the flow threshold, the control device 8 controls the frequency converter 12 to output a low-frequency voltage signal, so that the water pump 9 operates at a low speed; on the contrary, if the flow signal value is smaller than the flow threshold value, the control device 8 controls the frequency converter 12 to output a high-frequency voltage signal, so that the water pump 9 runs at a high speed.
Meanwhile, the temperature sensor 11 sends the measured temperature value to the control device 8, the control device 8 compares the received temperature value with the temperature threshold value, and if the temperature value is higher than the temperature threshold value, the control device 8 increases the numerical value of the flow threshold value; conversely, if the temperature value is lower than the temperature threshold, the control device 8 decreases the value of the flow threshold.
In this embodiment, the water flow meter 10 monitors the drainage flow of the water outlet pipe 7 and feeds the drainage flow back to the control device 8, so that the control device 8 can dynamically adjust the output frequency of the frequency converter 12 according to the actual drainage flow, thereby adjusting the operating power of the water pump 9; because the oil temperature in the oil tank 2 can reflect the operating temperature in the pump body 1 in real time, the temperature in the oil tank 2 is monitored by the temperature sensor 11 and fed back to the control device 8, so that the real-time monitoring of the temperature in the pump body 1 can be realized, the control device 8 can dynamically adjust the flow threshold value in the control device 8 according to the temperature change in the oil tank 2, and the purpose of dynamically adjusting the operating power of the water pump 9 is achieved. Not only saves the electric energy when the water pump 9 operates, but also can effectively control the temperature in the pump body 1.
Furthermore, the pump body 1 is provided with an air suction port 13 and an air exhaust port 14, and the air exhaust port 14 is connected with an oil mist filter 15, which can effectively filter oil mist in the exhausted air, so that the air exhaust port 14 can exhaust clean air, and is more environment-friendly.
Further, an exhaust pressure gauge 16 is provided at the exhaust port 14 to monitor the exhaust pressure, so that the operation condition of the vacuum pump can be monitored more comprehensively.
Furthermore, a filtering device 17 is disposed on the water inlet pipe 6, and the filtering device 17 is disposed between the water pump 9 and the cooling tower 3. In this embodiment, the filtering device 17 includes a connection tube 18 connected to the water inlet tube 6, and a port of the connection tube 18 may be connected to the water inlet tube 6 by a quick connector or welding, which is common knowledge in the art and will not be described herein. A filter screen 19 is arranged in the connecting pipe 18, and the filter screen 19 can effectively filter impurities in the cooling water to ensure the cleanness of the cooling water entering the pump body 1 and avoid influencing the running performance of a vacuum pump cooling system. The filter screen 19 is recessed towards the direction close to the water pump 9 to form a cavity 20, and the cavity 20 can increase the amount of impurities attached to the filter screen 19, so that the filtering performance of the filter screen 19 is improved.
Furthermore, a one-way conducting assembly 21 is disposed inside the connecting tube 18 at a position close to the cooling tower 3, the one-way conducting assembly 21 includes a mounting plate 22 fixed above the inner side wall of the connecting tube 18 and a guiding plate 23 pivoted to the lower side edge of the mounting plate 22, wherein the guiding plate 23 is preferably pivoted to the lower side edge of the mounting plate 22 by a hinge 31. The movable end of the guide plate 23 is provided with a circular arc surface 24 so that the movable end of the guide plate 23 is not obstructed by the inner wall of the joint pipe 18. A limiting convex point 25 is arranged below the inner side wall of the connecting pipe 18 and on one side close to the cooling water tower 3 to limit the position of the guide plate 23, so that the guide plate 23 can be turned and opened towards the direction close to the filter screen 19 to ensure that water flow can normally pass through; on the contrary, when the cooling water in the connecting pipe 18 flows reversely, the guide plate 23 cannot be opened reversely under the limiting action of the limiting salient point 25, so that the cooling water is prevented from flowing reversely back into the cooling water tower 3. The face of deflector 23 that is close to water pump 9 is provided with balancing weight 30, and it can make deflector 23 have the trend of falling downwards to efficiency when promoting deflector 23 and falling. A sewage draining pipe 26 extends from the upper side wall of the connecting pipe 18, and the sewage draining pipe 26 is positioned between the filter screen 19 and the one-way conduction assembly 21, so that the cooling water flowing reversely can be automatically drained from the sewage draining pipe 26. The sewage pipe 26 is provided with a sealing cover 27, and the sealing cover 27 is screwed on the pipe orifice of the sewage pipe 26, which belongs to the common knowledge in the field and is not described in detail herein. When the sewage pipe 26 is not used, the opening of the sewage pipe 26 can be sealed by the sealing cover 27, and the cooling water is prevented from overflowing from the sewage pipe 26. A flushing pipe 28 is arranged on the upper side wall of the adapter pipe 18 and on the side close to the water pump 9, and the port of the flushing pipe 28 is connected with a self-sealing joint 29 to externally connect a water source (not shown) so as to provide power for the reverse flow of the cooling water in the adapter pipe 18. In this embodiment, the external water source (not shown) may be an external water tower, a faucet, or the like. When the self-sealing joint 29 is externally connected with an external water source (not shown), the operation is convenient, the flushing pipe 28 can be automatically sealed after the external water source (not shown) is removed, and the operation convenience is improved.
The specific use of the filter device 17 is as follows:
when the water pump 9 normally operates, the cooling water in the water inlet pipe 6 positively passes through the connecting pipe 18, at the moment, under the pressure action of water flow, the guide plate 23 can be automatically turned over and opened towards the filter screen 19, so that the cooling water can normally pass through the filter screen 19, and the cooling water after impurities are filtered can normally enter the pump body 1. As the use time increases, a certain amount of impurities are accumulated on the filter net 19, thereby affecting the smoothness of the running water of the adapter tube 18. At this time, the operation of the water pump 9 is stopped to stop the flow of water in the water inlet pipe 6, and then the user opens the sealing cap 27 of the sewage pipe 26, connects the self-sealing joint 29 of the flushing pipe 28 with an external water source (not shown) and starts the external water source (not shown), so that the flow of water in the adapter pipe 18 can be reversely operated. The guide plate 23 cannot be opened reversely by the restriction of the stopper projection 25 to prevent reverse water flow through the adapter tube 18. At this moment, rivers can only discharge through blow off pipe 26, and at the in-process of drainage, rivers are reverse through filter screen 19 to wash the impurity of the filter screen 19 depressed face, so that the dirty water that has impurity can discharge through blow off pipe 26, avoid filter screen 19 to take place to block up, in order to guarantee the rivers smoothness nature of adapter 18. After the filter screen 19 is cleaned, the sealing cap 27 is re-installed on the sewage pipe 26, then the external water source (not shown) is removed from the self-sealing joint 29 to automatically seal the flushing pipe 28, and finally the water pump 9 is restarted to continue the water inlet pipe 6 to the pump body 1.
Claims (8)
1. The utility model provides an intelligent temperature control system of vacuum pump, includes the pump body (1), oil tank (2) and cooling tower (3), and the outer wall of the pump body (1) is provided with cooling water inlet (4) and cooling water outlet (5), and cooling water inlet (4) are provided with inlet tube (6), and cooling water outlet (5) are provided with outlet pipe (7), and inlet tube (6) are connected to the delivery port and the water inlet of cooling tower (3) respectively with outlet pipe (7), its characterized in that: the cooling water pump is characterized by also comprising a control device (8), wherein a water pump (9) is arranged on the water inlet pipe (6) to pump the cooling water in the cooling water tower (3) into the cooling water inlet (4); a water flow meter (10) is arranged on the water outlet pipe (7) to monitor the drainage flow of the water outlet pipe (7) and send a flow signal to the control device (8), a temperature sensor (11) is arranged on the oil tank (2) to monitor the temperature change in the oil tank (2) and send the measured temperature value to the control device (8), a frequency converter (12) is coupled to the control device (8), and a water pump (9) is coupled to a signal output end of the frequency converter (12); a temperature threshold and a flow threshold are preset in the control unit;
the water flow meter (10) sends the measured flow signal value to the control device (8), the control device (8) compares the received flow signal value with a flow threshold value, and if the flow signal value is larger than the flow threshold value, the control device (8) controls the frequency converter (12) to output a low-frequency voltage signal so as to enable the water pump (9) to run at a low speed; on the contrary, if the flow signal value is smaller than the flow threshold value, the control device (8) controls the frequency converter (12) to output a high-frequency voltage signal so as to enable the water pump (9) to run at a high speed;
the temperature sensor (11) sends the measured temperature value to the control device (8), the control device (8) compares the received temperature value with a temperature threshold value, and if the temperature value is higher than the temperature threshold value, the control device (8) increases the numerical value of the flow threshold value; conversely, if the temperature value is lower than the temperature threshold value, the control device (8) reduces the value of the flow threshold value.
2. The intelligent temperature control system of a vacuum pump of claim 1, wherein: the pump body (1) is provided with an air inlet (13) and an air outlet (14), and the air outlet (14) is connected with an oil mist filter (15).
3. The intelligent temperature control system of a vacuum pump according to claim 2, wherein: an exhaust pressure gauge (16) is provided at the exhaust port (14) to monitor the exhaust pressure.
4. The intelligent temperature control system of a vacuum pump according to claim 1, 2 or 3, wherein: the water inlet pipe (6) is also provided with a filtering device (17), and the filtering device (17) is arranged between the water pump (9) and the cooling water tower (3).
5. The intelligent temperature control system of a vacuum pump of claim 4, wherein: the filtering device (17) comprises a connecting pipe (18) connected with the water inlet pipe (6), and a filter screen (19) is arranged in the connecting pipe (18).
6. The intelligent temperature control system of a vacuum pump of claim 5, wherein: the filter screen (19) is concave towards the direction close to the water pump (9) to form a cavity (20).
7. The intelligent temperature control system of a vacuum pump of claim 5, wherein: a one-way conduction assembly (21) is arranged in the connecting pipe (18) at a position close to the cooling water tower (3), the one-way conduction assembly (21) comprises an installation plate (22) fixed above the inner side wall of the connecting pipe (18) and a guide plate (23) pivoted to the lower side edge of the installation plate (22), and the movable end of the guide plate (23) is provided with an arc surface (24); a limiting salient point (25) is arranged below the inner side wall of the connecting pipe (18) and on one side close to the cooling water tower (3) to limit the position of the guide plate (23); a sewage discharge pipe (26) extends from the upper side wall of the connecting pipe (18), the sewage discharge pipe (26) is positioned between the filter screen (19) and the one-way conduction assembly (21), and a sealing cover (27) is arranged on the sewage discharge pipe (26); a flushing pipe (28) is arranged on the upper side wall of the connecting pipe (18) and on one side close to the water pump (9), and the port of the flushing pipe (28) is connected with a self-sealing joint (29) and is externally connected with an external water source.
8. The intelligent temperature control system of a vacuum pump of claim 7, wherein: the surface of the guide plate (23) close to the water pump (9) is provided with a balancing weight (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010547717.3A CN111894854A (en) | 2020-06-16 | 2020-06-16 | Intelligent temperature control system of vacuum pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010547717.3A CN111894854A (en) | 2020-06-16 | 2020-06-16 | Intelligent temperature control system of vacuum pump |
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|---|---|
| CN111894854A true CN111894854A (en) | 2020-11-06 |
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| CN202010547717.3A Pending CN111894854A (en) | 2020-06-16 | 2020-06-16 | Intelligent temperature control system of vacuum pump |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115523143A (en) * | 2022-03-25 | 2022-12-27 | 上海汉钟精机股份有限公司 | Method and system for monitoring operation of vacuum pump using temperature sensor |
| CN116538090A (en) * | 2023-04-26 | 2023-08-04 | 北京通嘉宏瑞科技有限公司 | Vacuum pump temperature control system and temperature control method |
| CN117345631A (en) * | 2023-08-24 | 2024-01-05 | 东莞市大成智能装备有限公司 | Vacuum pump rotor movement gap monitoring method, control method and vacuum pump |
| CN117345631B (en) * | 2023-08-24 | 2024-05-31 | 东莞市大成智能装备有限公司 | Vacuum pump rotor movement gap monitoring method, control method and vacuum pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115523143A (en) * | 2022-03-25 | 2022-12-27 | 上海汉钟精机股份有限公司 | Method and system for monitoring operation of vacuum pump using temperature sensor |
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| CN117345631A (en) * | 2023-08-24 | 2024-01-05 | 东莞市大成智能装备有限公司 | Vacuum pump rotor movement gap monitoring method, control method and vacuum pump |
| CN117345631B (en) * | 2023-08-24 | 2024-05-31 | 东莞市大成智能装备有限公司 | Vacuum pump rotor movement gap monitoring method, control method and vacuum pump |
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