CN115076068A - Waste heat recovery system of air compressor - Google Patents
Waste heat recovery system of air compressor Download PDFInfo
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- CN115076068A CN115076068A CN202210745186.8A CN202210745186A CN115076068A CN 115076068 A CN115076068 A CN 115076068A CN 202210745186 A CN202210745186 A CN 202210745186A CN 115076068 A CN115076068 A CN 115076068A
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- pipeline
- recovery system
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- 238000011084 recovery Methods 0.000 title claims abstract description 159
- 239000002918 waste heat Substances 0.000 title claims abstract description 155
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 122
- 239000007788 liquid Substances 0.000 claims abstract description 97
- 239000007789 gas Substances 0.000 claims abstract description 33
- 238000003860 storage Methods 0.000 claims abstract description 26
- 238000001514 detection method Methods 0.000 claims description 45
- 238000007789 sealing Methods 0.000 claims description 28
- 238000005192 partition Methods 0.000 claims description 20
- 238000009434 installation Methods 0.000 claims description 10
- 230000007704 transition Effects 0.000 claims description 9
- 239000003921 oil Substances 0.000 description 176
- 239000010687 lubricating oil Substances 0.000 description 30
- 239000008399 tap water Substances 0.000 description 23
- 235000020679 tap water Nutrition 0.000 description 23
- 239000012530 fluid Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000010865 sewage Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- 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
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/12—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high pressure
-
- 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
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
-
- 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
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
- F04B39/064—Cooling by a cooling jacket in the pump casing
-
- 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
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
-
- 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
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/123—Fluid connections
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention provides a waste heat recovery system of an air compressor. Air compressor machine waste heat recovery system includes: a compressor; an oil-gas separator; the waste heat recovery device comprises a heat exchanger, a pipeline assembly, a water storage tank and a switch structure, wherein the pipeline assembly comprises a liquid inlet pipe, a liquid inlet branch pipe and a liquid outlet pipe, and the heat exchanger is communicated with the water storage tank; the switch structure is arranged on the liquid inlet branch pipe; the oil outlet of the heat exchanger is communicated with the first condenser through a second oil liquid pipeline; the second condenser is communicated with the oil-gas separator through an exhaust pipe; the air outlet direction of the fan is from the second condenser to the first condenser; when the waste heat recovery system of the air compressor is in a first waste heat recovery mode, the switch structure controls the liquid inlet branch pipe to be communicated with the liquid inlet pipe; when the air compressor waste heat recovery system is in the second waste heat recovery mode, the switch structure controls the liquid inlet branch pipe to be disconnected and communicated with the liquid inlet pipe. The invention solves the problem of low waste heat utilization rate of the waste heat recovery system in the prior art.
Description
Technical Field
The invention relates to the technical field of waste heat recovery, in particular to a waste heat recovery system of an air compressor.
Background
At present, an air compressor (compressor for short) is a device for compressing gas, however, in the operation process of the compressor, about 80% -85% of electric energy is converted into heat, and the heat is taken away by various coolers or exhaust fans and discharged into the air environment, so that the temperature of the air environment of an air compressor room is too high, the air compressor has potential safety hazards of jumping and stopping, normal production is influenced, and a large amount of energy is wasted.
In prior art, carry out the heat exchange through setting up plate heat exchanger to the oil extraction pipeline and utilize, with the waste heat recovery of air compressor machine, however, above-mentioned recovery system's waste heat utilization ratio is lower.
Disclosure of Invention
The invention mainly aims to provide a waste heat recovery system of an air compressor, which aims to solve the problem that the waste heat utilization rate of the waste heat recovery system in the prior art is low.
In order to achieve the above object, the present invention provides an air compressor waste heat recovery system, including: a compressor; the oil-gas separator is communicated with an oil discharge port of the compressor; the waste heat recovery device comprises a heat exchanger, a pipeline assembly, a water storage tank and a switch structure, wherein the pipeline assembly comprises a liquid inlet pipe, a liquid inlet branch pipe and a liquid outlet pipe; the switch structure is arranged on the liquid inlet branch pipe and used for controlling the on-off state of the liquid inlet branch pipe and the liquid inlet pipe; an oil inlet of the heat exchanger is communicated with an oil discharge port of the oil-gas separator through a first oil-liquid pipeline, and an oil outlet of the heat exchanger is communicated with the first condenser through a second oil-liquid pipeline; the second condenser is communicated with an exhaust port of the oil-gas separator through an exhaust pipe, and the second condenser is arranged opposite to the first condenser; the air outlet direction of the fan is the direction from the second condenser to the first condenser; the waste heat recovery system of the air compressor is provided with a first waste heat recovery mode and a second waste heat recovery mode, and when the waste heat recovery system of the air compressor is in the first waste heat recovery mode, the liquid inlet branch pipe is controlled to be communicated with the liquid inlet pipe through the switch structure; when the waste heat recovery system of the air compressor is in the second waste heat recovery mode, the liquid inlet branch pipe is controlled to be disconnected and communicated with the liquid inlet pipe through the switch structure.
Further, air compressor machine waste heat recovery system still includes: one end of the third oil pipeline is communicated with an oil inlet of the compressor; the other end of the third oil pipeline is communicated with the fourth oil pipeline; the first control valve is arranged on the first oil liquid pipeline and is connected with the fourth oil liquid pipeline, and the first control valve has a first state of controlling all oil liquid in the first oil liquid pipeline to enter the heat exchanger and a second state of controlling at least part of the oil liquid to enter the fourth oil liquid pipeline; a first temperature detecting device for detecting the temperature of the oil discharged from the first condenser; when the air compressor waste heat recovery system is in the first waste heat recovery mode and the temperature detection value of the first temperature detection device is smaller than a first preset temperature value, the first control valve is in the second state.
Further, the waste heat recovery device further comprises: the pump body is arranged on the liquid inlet pipe and/or the liquid outlet pipe; when the waste heat recovery system of the air compressor is in a first waste heat recovery mode, controlling the pump body to stop running; and when the air compressor waste heat recovery system is in the second waste heat recovery mode, the pump body is controlled to be started so as to pump the water in the water storage tank into the heat exchanger.
Further, air compressor machine waste heat recovery system still includes: the second control valve is arranged on the end part of the exhaust pipe and comprises a valve body and a sealing structure, the valve body is provided with an overflowing hole and an exhaust hole, and the inner cavity of the exhaust pipe is communicated with the exhaust hole through the overflowing hole; the sealing structure is movably arranged in the valve body to block or avoid the overflowing hole.
Further, the second control valve further includes: and the elastic structure is arranged in the valve body and is used for applying elastic force moving towards the overflowing hole to the sealing structure so as to block the overflowing hole through the sealing structure.
Further, the overflowing hole includes a first overflowing hole and a second overflowing hole communicated with each other, and the valve body includes: the first cylinder is connected with the exhaust pipe and communicated with the exhaust pipe; the second cylinder is connected with the first cylinder, a partition plate is arranged in the second cylinder, the partition plate divides an inner cavity of the second cylinder into an installation cavity and a transition cavity, a first overflowing hole is formed in the wall of the installation cavity, a second overflowing hole is formed in the partition plate, the sealing structure is movably arranged in the installation cavity, and the transition cavity is communicated with the exhaust hole; wherein the transition cavity is arranged around the mounting cavity.
Further, air compressor machine waste heat recovery system still includes: the third control valve is arranged on the first oil liquid pipeline and is positioned between the oil-gas separator and the heat exchanger; the fifth oil pipeline is connected with the third control valve and the second oil pipeline; the third control valve has a first state for controlling all oil in the first oil pipeline to enter the heat exchanger and a second state for controlling all oil in the first oil pipeline to enter the fifth oil pipeline.
Further, air compressor machine waste heat recovery system still includes: the second temperature detection device is arranged on the liquid inlet pipe; and/or the third temperature detection device is arranged on the liquid outlet pipe; and/or the fourth temperature detection device is arranged on the first oil liquid pipeline; and/or the fifth temperature detection device is arranged on the second oil liquid pipeline.
Further, air compressor machine waste heat recovery system still includes: the fourth control valve is arranged on the second oil liquid pipeline and is positioned between the first condenser and the heat exchanger; the fourth control valve is connected with the third oil pipeline through the sixth oil pipeline; the fourth control valve has a first state for controlling all oil in the second oil pipeline to enter the first condenser and a second state for controlling all oil in the second oil pipeline to enter the sixth oil pipeline.
Further, air compressor machine waste heat recovery system still includes: a sixth temperature detecting means for detecting a temperature of the oil discharged from the heat exchanger; and when the air compressor waste heat recovery system is in a second waste heat recovery mode, the detection value of the sixth temperature detection device is smaller than a second preset temperature value, and the fourth control valve is in the first state, controlling the fan to stop running.
By applying the technical scheme, the waste heat recovery system of the air compressor comprises the first condenser and the second condenser which are oppositely arranged, after the fan is started, the fan blows heat on the second condenser to the first condenser so as to heat oil in the first condenser, and then heat in the exhaust pipe is recovered and utilized. Thus, the waste heat recovery system of the air compressor has two waste heat recovery states, when the waste heat recovery system of the air compressor is in the first waste heat recovery mode, water in the water source can enter the water inlet of the heat exchanger through the liquid inlet branch pipe and exchange heat with oil in the first oil pipeline to heat the water, because the heat consumption of the oil in the first oil pipeline is larger due to the process, the temperature of the oil entering the second oil pipeline is lower than a first preset temperature value, at the moment, the heat of gas in the exhaust pipe is recovered by combining the fan and the second condenser, and the oil entering the oil inlet of the compressor is heated by the heat, the double recovery of the heat of the oil in the first oil pipeline and the heat of the gas in the exhaust pipe is realized, and the problem of low waste heat utilization rate of a waste heat recovery system in the prior art is solved; when air compressor machine waste heat recovery system is in the second waste heat recovery mode, during water in the water source can not get into the heat exchanger, only heats the existing water in the pipeline subassembly, and the heat consumption of the fluid in the first fluid pipeline is less this moment, need not to heat the fluid that gets into the oil inlet of compressor, then only realizes the heat recovery of fluid in the first fluid pipeline, and the staff can select suitable waste heat recovery mode according to operating mode and user demand.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram illustrating an embodiment of a waste heat recovery system of an air compressor according to the present invention;
fig. 2 is a sectional view illustrating the sealing structure of the second control valve of the waste heat recovery system of the air compressor in fig. 1 for blocking the overflowing hole;
FIG. 3 illustrates a cross-sectional view of the sealing structure of the second control valve of FIG. 2 as it exits the flowbore.
Wherein the figures include the following reference numerals:
1. a liquid inlet branch pipe; 2. a second tap water valve; 3. a second temperature detection device; 4. a fifth temperature detection device; 5. a second oil line; 6. a fourth control valve; 7. a sixth oil line; 8. a surge tank; 9. an exhaust pipe; 10. a third oil line; 11. an oil filter; 12. an air filter; 13. an air inlet pipe; 14. a compressor; 15. an oil-gas mixing pipeline; 16. an oil-gas separator; 17. a first oil line; 18. a first connection point; 19. a third control valve; 20. a heat exchanger; 21. a thermostat; 22. a liquid outlet pipe; 23. a user; 24. a pump body; 25. a liquid inlet pipe; 26. a third temperature detection device; 27. a fifth oil pipeline; 28. a first condenser; 29. a fan; 30. a second condenser; 31. a second connection point; 32. a first control valve; 33. a fourth temperature detection device; 34. a third connection point; 35. a fourth oil line; 36. a blow-off pipe; 37. a blowoff valve; 38. a water storage tank; 39. a second water line; 40. a first water line; 41. a water replenishing valve; 42. a water replenishing pipe; 43. a water softener; 44. a first tap water line; 45. a second tap water line; 46. a first tap water valve; 47. softening the water tank; 48. a circulation pump; 49. a first cylinder; 50. a partition plate; 51. a second cylinder; 52. a support plate; 53. an exhaust hole; 54. an elastic structure; 55. a second overflowing hole; 56. a sealing structure; 57. a first overflow aperture; 58. a second control valve.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
In the present invention, unless stated to the contrary, use of the directional terms "upper and lower" are generally directed to the orientation shown in the drawings, or to the vertical, or gravitational direction; likewise, for ease of understanding and description, "left and right" are generally to the left and right as shown in the drawings; "inner and outer" refer to the inner and outer relative to the profile of the respective member itself, but the above directional terms are not intended to limit the present invention.
In order to solve the problem that the waste heat utilization rate of a waste heat recovery system is lower in the prior art, the application provides an air compressor waste heat recovery system.
As shown in fig. 1 to 3, the air compressor waste heat recovery system includes a compressor 14, an oil-gas separator 16, a waste heat recovery device, a first condenser 28, a second condenser 30, and a fan 29. The oil separator 16 communicates with an oil discharge port of the compressor 14. The waste heat recovery device comprises a heat exchanger 20, a pipeline assembly, a water storage tank 38 and a switch structure, wherein the pipeline assembly comprises a liquid inlet pipe 25, a liquid inlet branch pipe 1 and a liquid outlet pipe 22, a water outlet of the heat exchanger 20 is communicated with the water storage tank 38 through the liquid outlet pipe 22, and a water inlet of the heat exchanger 20 is communicated with the water storage tank 38 through the liquid inlet pipe 25; the liquid inlet branch pipe 1 is communicated with a water source, and the switch structure is arranged on the liquid inlet branch pipe 1 and used for controlling the on-off state of the liquid inlet branch pipe 1 and the liquid inlet pipe 25. An oil inlet of the heat exchanger 20 is communicated with an oil discharge port of the oil-gas separator 16 through a first oil liquid pipeline 17, and an oil outlet of the heat exchanger 20 is communicated with a first condenser 28 through a second oil liquid pipeline 5. The second condenser 30 is communicated with the exhaust port of the oil separator 16 through the exhaust pipe 9, and the second condenser 30 is arranged opposite to the first condenser 28. The air outlet direction of the fan 29 is the direction from the second condenser 30 to the first condenser 28. The air compressor waste heat recovery system has a first waste heat recovery mode and a second waste heat recovery mode, and when the air compressor waste heat recovery system is in the first waste heat recovery mode, the liquid inlet branch pipe 1 is controlled to be communicated with the liquid inlet pipe 25 through a switch structure; when the air compressor waste heat recovery system is in the second waste heat recovery mode, the liquid inlet branch pipe 1 is controlled to be disconnected with the liquid inlet pipe 25 through the switch structure.
By using the technical scheme of the embodiment, the air compressor waste heat recovery system comprises the first condenser 28 and the second condenser 30 which are oppositely arranged, and after the fan 29 is started, the fan 29 blows heat on the second condenser 30 to the first condenser 28 so as to heat oil in the first condenser 28, and then the heat in the exhaust pipe 9 is recovered and utilized. Thus, the waste heat recovery system of the air compressor has two waste heat recovery states, when the waste heat recovery system of the air compressor is in the first waste heat recovery mode, water in the water source can enter the water inlet of the heat exchanger 20 through the liquid inlet branch pipe 1 and exchange heat with oil in the first oil pipeline 17 to heat the water, because the heat consumption of the oil in the first oil pipeline 17 is large due to the above process, the temperature of the oil entering the second oil pipeline 5 is lower than the first preset temperature value, at this time, the heat of the gas in the exhaust pipe 9 is recovered by combining the fan 29 and the second condenser 30, the oil entering the oil inlet of the compressor 14 is heated by the heat, therefore, double recovery of the heat of the oil in the first oil pipeline 17 and the heat of the gas in the exhaust pipe 9 is realized, and the problem of low waste heat utilization rate of a waste heat recovery system in the prior art is solved; when air compressor machine waste heat recovery system is in the second waste heat recovery mode, water in the water source can not get into heat exchanger 20, only heats the existing water in the pipeline subassembly, and the heat consumption of the fluid in the first fluid pipeline 17 this moment is less, need not to heat the fluid that gets into the oil inlet of compressor 14, then only realizes the heat recovery of fluid in the first fluid pipeline 17, and the staff can select suitable waste heat recovery mode according to operating mode and user demand.
In this embodiment, air enters the compressor 14 from an air inlet of the compressor 14, and is discharged from an air outlet of the compressor 14 after being compressed, because the compressed air discharged from the air outlet of the compressor 14 mixes the lubricating oil of the compressor 14, that is, an oil-gas mixture comes out from an outlet of the compressor 14, the oil-gas mixture enters the oil-gas separator 16 through the oil-gas mixing pipeline 15, and after separation, the compressed air enters the exhaust pipe 9, and the lubricating oil enters the first oil pipeline 17, when heat exchange is required, the lubricating oil in the first oil pipeline 17 flows through a hot side of the heat exchanger 20 and exchanges heat with water in the first water circulation pipeline flowing through a cold side of the heat exchanger 20, that is, the lubricating oil releases heat and absorbs heat with water. The first water circulation line stores heat extracted from the heat exchanger 20 in the reservoir 38 and the second water circulation line transfers heat in the reservoir 38 to the user 23.
As shown in fig. 1, a water softener 43 and a softened water tank 47 are connected to a tap water pipeline, the tap water pipeline includes a first tap water pipeline 44, a second tap water pipeline 45 and a liquid inlet branch pipe 1, the tap water valve includes a first tap water valve 46 and a second tap water valve 2, the first tap water pipeline 44 is connected to a water inlet of the water softener 43, the second tap water pipeline 45 is located between a water outlet of the water softener 43 and a water inlet of the softened water tank 47, the liquid inlet branch pipe 1 is located between an outlet of the softened water tank 47 and the liquid inlet pipe 25, the first tap water valve 46 is disposed on the second tap water pipeline 45, and the second tap water valve 2 is disposed on the liquid inlet branch pipe 1. Thus, the water softener 43 serves to remove calcium and magnesium ions from the tap water and reduce the hardness of the raw water, thereby preventing the carbonate from scaling in the pipe assembly.
As shown in fig. 1, the air compressor waste heat recovery system further includes a third oil pipeline 10, a fourth oil pipeline 35, a first control valve 32, and a first temperature detection device. One end of the third oil line 10 is communicated with an oil inlet of the compressor 14. The other end of the third oil line 10 communicates with a fourth oil line 35. The first control valve 32 is arranged on the first oil pipeline 17, the first control valve 32 is connected with the fourth oil pipeline 35, and the first control valve 32 has a first state of controlling all oil in the first oil pipeline 17 to enter the heat exchanger 20 and a second state of controlling at least part of the oil to enter the fourth oil pipeline 35. The first temperature detecting means detects the temperature of the oil discharged from the first condenser 28. When the air compressor waste heat recovery system is in the first waste heat recovery mode and the temperature detection value of the first temperature detection device is smaller than the first preset temperature value, the first control valve 32 is in the second state. Optionally, the first preset temperature value is 65 ℃.
Specifically, when the temperature of the oil discharged from the first condenser 28 is lower than 65 ℃, the first control valve 32 branches the high-temperature oil into the third oil line 10 through the fourth oil line 35 to increase the oil return temperature of the compressor 14 so that the oil return temperature is constant at 65 ℃. Thus, when the air compressor waste heat recovery system is in the first waste heat recovery mode, the heat in the lubricating oil can be recovered, and the heat in the compressed air can be recovered, so that the waste heat utilization of the compressor 14 is maximized.
Optionally, the first temperature detection means is a thermometer.
Optionally, the waste heat recovery device further comprises a pump body 24. Wherein, the pump body 24 is arranged on the liquid inlet pipe 25 and/or the liquid outlet pipe 22; when the air compressor waste heat recovery system is in the first waste heat recovery mode, controlling the pump body 24 to stop running; when the air compressor waste heat recovery system is in the second waste heat recovery mode, the pump body 24 is controlled to be started so as to pump the water in the water storage tank 38 into the heat exchanger 20. Like this, the setting position that the above-mentioned setting made the pump body 24 is more nimble to satisfy different user demands and operating mode, also promoted staff's processing flexibility, simultaneously, the pump body 24 is used for sending the water that is located water storage box 38 to heat exchanger 20 in, with the circulation flow of assurance water between heat exchanger 20 and water storage box 38, avoids water waste.
In this embodiment, the liquid inlet pipe 25 and the liquid outlet pipe 22 form a first water circulation pipeline, one end of the liquid inlet pipe 25 is connected to a water inlet on a cold side of the heat exchanger 20, the other end of the liquid inlet pipe 25 is connected to a water outlet on a cold side of the water storage tank 38, one end of the liquid outlet pipe 22 is connected to a water outlet on the cold side of the heat exchanger 20, the other end of the liquid outlet pipe 22 is connected to a water return port on the water storage tank 38, the liquid inlet pipe 25 is connected to the liquid inlet branch pipe 1, and the liquid outlet pipe 22 is provided with the thermostat 21 to control the temperature of outlet water of the heat exchanger 20 to be constant through the thermostat 21. The pump body 24 is arranged on the inlet pipe 25, and when the pump body 24 is operated, the water in the first water circulation line flows back and forth between the heat exchanger 20 and the water storage tank 38 (heat is absorbed when the water flows through the heat exchanger 20, and heat is released when the water flows through the water storage tank 38, that is, the water storage tank 38 stores heat) to form a water circulation.
As shown in fig. 1 to 3, the air compressor waste heat recovery system further includes a second control valve 58. Wherein, the second control valve 58 is arranged on the end of the exhaust pipe 9, the second control valve 58 comprises a valve body and a sealing structure 56, the valve body is provided with an overflowing hole and an exhaust hole 53, and the inner cavity of the exhaust pipe 9 is communicated with the exhaust hole 53 through the overflowing hole; a seal 56 is movably disposed within the valve body to seal or vent the flowbore. Thus, when the second control valve 58 is in the initial state, the exhaust hole 53 is in the closed state, and only when the sealing structure 56 is pushed by the compressed gas and moves to escape from the overflowing hole, the compressed gas can be exhausted from the exhaust hole 53, so that the foreign matters are prevented from entering the exhaust pipe 9 to block the exhaust pipe 9.
As shown in fig. 2 and 3, the second control valve 58 also includes a resilient structure 54. Wherein the elastic structure 54 is disposed in the valve body, the elastic structure 54 is used for applying an elastic force to the sealing structure 56 to move towards the overflowing hole so as to seal the overflowing hole by the sealing structure 56. Thus, when the compressed gas pushes the sealing structure 56 to move and the sealing structure 56 moves to avoid the overflowing hole, the elastic structure 54 is in a compressed state, and when the exhaust pipe 9 does not exhaust, the elastic structure 54 restores elastic deformation to push the sealing structure 56 to move towards the overflowing hole until the overflowing hole is sealed. Optionally, the resilient structure 54 is a spring.
As shown in fig. 2 and 3, the overflowing hole includes a first overflowing hole 57 and a second overflowing hole 55 which are communicated with each other, and the valve body includes a first cylinder 49 and a second cylinder 51. The first cylinder 49 is connected to the exhaust pipe 9 and communicates with the exhaust pipe 9. The second cylinder 51 is connected with the first cylinder 49, a partition plate 50 is arranged in the second cylinder 51, the partition plate 50 divides an inner cavity of the second cylinder 51 into an installation cavity and a transition cavity, a first overflowing hole 57 is formed in the wall of the installation cavity, a second overflowing hole 55 is formed in the partition plate 50, a sealing structure 56 is movably arranged in the installation cavity, and the transition cavity is communicated with the exhaust hole 53. Wherein, the transition chamber sets up around the installation cavity. Thus, the second control valve 58 is simpler in structure, easy to machine and implement, and the machining cost of the second control valve 58 is reduced.
In this embodiment, the first cylinder 49 is disposed at the outlet of the exhaust pipe 9, a first overflowing hole 57 is disposed at a junction of the first cylinder 49 and the second cylinder 51, the first overflowing hole 57 communicates with the cylinder cavities of the first cylinder 49 and the second cylinder 51, a supporting plate 52 is fixedly disposed in the cylinder cavity of the second cylinder 51, the supporting plate 52 is perpendicular to the second cylinder 51, a partition plate 50 is disposed in the cylinder cavity of the second cylinder 51 above the supporting plate 52, a lower end of the partition plate 50 is fixed on the supporting plate 52, and an upper end of the partition plate 50 is fixedly disposed at the junction of the cylinder cavities of the first cylinder 49 and the second cylinder 51. The partition plate 50 is cylindrical, the partition plate 50 is coaxial with the first overflowing hole 57, the inner cylinder diameter of the partition plate 50 is larger than the aperture of the first overflowing hole 57, the diameter of the sealing structure 56 is equal to the inner cylinder diameter of the partition plate 50, the second overflowing hole 55 is arranged on the cylinder wall of the partition plate 50, the exhaust hole 53 is arranged on the support plate 52, and the exhaust hole 53 is positioned between the outer cylinder wall of the partition plate 50 and the inner cylinder wall of the second cylinder 51.
Optionally, the first cylinder 49 is welded or screwed to the exhaust pipe 9.
Specifically, when the compressed air flows out from the outlet of the exhaust pipe 9, the compressed air enters the cylinder cavity of the first cylinder 49 of the second control valve 58, the sealing structure 56 moves downward and compresses the elastic structure 54 under the action of the compressed air, at this time, the first overflowing hole 57 is opened, the compressed air in the cylinder cavity of the first cylinder 49 enters the cylinder cavity of the second cylinder 51 through the first overflowing hole 57, the sealing structure 56 continues to move downward, when the height of the sealing structure 56 is lower than that of the second overflowing hole 55, the compressed air in the cylinder cavity of the second cylinder 51 enters the annular cavity between the partition plate 50 and the second cylinder 51 through the second overflowing hole 55, and then the compressed air in the annular cavity enters the lower part of the cylinder cavity of the second cylinder 51 through the exhaust hole 53 and is exhausted from the lower opening of the second cylinder 51. When the outlet of the exhaust pipe 9 no longer flows out of the compressed air, the compressed elastic structure 54 pushes the sealing structure 56 upwards to move until the sealing structure 56 blocks the first overflowing hole 57, and at the same time, the second control valve 58 is in a closed state. In this way, when the exhaust pipe 9 does not discharge the compressed air, i.e., is in a non-use state, the outlet of the exhaust pipe 9 can be closed by the second control valve 58, thereby preventing impurities from entering the exhaust pipe 9 to cause clogging of the exhaust pipe 9.
In the present embodiment, the hole wall of the first overflowing hole 57 matches the shape of the sealing structure 56. Optionally, the seal structure 56 is a sphere.
As shown in fig. 1, the air compressor waste heat recovery system further includes a third control valve 19 and a fifth oil line 27. Wherein, the third control valve 19 is arranged on the first oil pipeline 17 and between the oil separator 16 and the heat exchanger 20. The fifth oil line 27 is connected to both the third control valve 19 and the second oil line 5. The third control valve 19 has a first state in which all of the oil in the first oil line 17 is introduced into the heat exchanger 20 and a second state in which all of the oil in the first oil line 17 is introduced into the fifth oil line 27. Thus, the above arrangement enables the air compressor waste heat recovery system to have multiple operation modes, and when the third control valve 19 is in the first state, the heat exchanger 20 is put into use to provide hot water for users. When the third control valve 19 is in the second state, the heat exchanger 20 is not in use, and the oil flows back into the compressor 14 directly.
Specifically, the third control valve 19 is located between the first control valve 32 and the heat exchanger 20, and the third control valve 19 is connected to the second oil line 5 through the fifth oil line 27. When the third control valve 19 is in the first state, the lubricating oil in the first oil line 17 only enters the heat exchanger 20; when the third control valve 19 is in the second state, the lubricating oil in the first oil line 17 is fed directly into the second oil line 5 only via the fifth oil line 27. When the user needs to use the heat exchanger 20, the third control valve 19 is adjusted to the first state, and conversely, when heat exchange is not needed, the third control valve 19 is adjusted to the second state.
Optionally, the air compressor waste heat recovery system further comprises a second temperature detection device 3, and the second temperature detection device 3 is arranged on the liquid inlet pipe 25; and/or the press waste heat recovery system further comprises a third temperature detection device 26, and the third temperature detection device 26 is arranged on the liquid outlet pipe 22; and/or the press waste heat recovery system further comprises a fourth temperature detection device 33, and the fourth temperature detection device 33 is arranged on the first oil pipeline 17; and/or the press waste heat recovery system further comprises a fifth temperature detection device 4, and the fifth temperature detection device 4 is arranged on the second oil pipeline 5.
In this embodiment, the second temperature detection device 3 is disposed on the liquid inlet pipe 25 at the cold side inlet of the heat exchanger 20, the third temperature detection device 26 is disposed on the liquid outlet pipe 22 at the cold side outlet of the heat exchanger 20, the fourth temperature detection device 33 is disposed on the first oil pipe 17 at the hot side inlet of the heat exchanger 20, and the fifth temperature detection device 4 is disposed on the second oil pipe 5 at the hot side outlet of the heat exchanger 20. In this way, the temperatures of the inlet and outlet of the cold side and the hot side of the heat exchanger 20 are detected by the second temperature detection device 3, the third temperature detection device 26, the fourth temperature detection device 33 and the fifth temperature detection device 4, so that the temperature of the air compressor waste heat recovery system can be monitored by a worker.
Optionally, the second temperature detection means 3 is a thermometer.
Optionally, the third temperature detection device 26 is a thermometer.
Optionally, the fourth temperature detecting means 33 is a thermometer.
Optionally, the fifth temperature detecting means 4 is a thermometer.
As shown in fig. 1, the air compressor waste heat recovery system further includes a fourth control valve 6 and a sixth oil pipeline 7. Wherein, the fourth control valve 6 is arranged on the second oil pipeline 5 and between the first condenser 28 and the heat exchanger 20. The fourth control valve 6 is connected with the third oil pipeline 10 through a sixth oil pipeline 7; the fourth control valve 6 has a first state in which all of the oil in the second oil line 5 is introduced into the first condenser 28 and a second state in which all of the oil in the second oil line 5 is introduced into the sixth oil line 7. In this way, when the fourth control valve 6 is in the first state, the first condenser 28 is put into use; when the fourth control valve 6 is in the second state, the first condenser 28 is not put into use, the oil directly flows back to the compressor 14, and the operator can select the oil according to the working condition and the use requirement.
Specifically, a connection point between the fifth oil line 27 and the second oil line 5 is a first connection point 18, the fourth control valve 6 is located between the first connection point 18 and the first condenser 28, a connection point between the sixth oil line 7 and the third oil line 10 is a second connection point 31, a connection point between the fourth oil line 35 and the third oil line 10 is a third connection point 34, and the second connection point 31 is located between the third connection point 34 and the first condenser 28.
In this embodiment, the air compressor machine waste heat recovery system still includes sixth temperature-detecting device. Wherein, the sixth temperature detecting device is used for detecting the temperature of the oil liquid discharged from the heat exchanger 20; when the air compressor waste heat recovery system is in the second waste heat recovery mode, the detection value of the sixth temperature detection device is smaller than the second preset temperature value, and the fourth control valve 6 is in the first state, the fan 29 is controlled to stop running.
As shown in FIG. 1, a water replenishing pipe 42 and a sewage draining pipe 36 are arranged on the water storage tank 38, a water replenishing valve 41 is arranged on the water replenishing pipe 42, and a sewage draining valve 37 is arranged on the sewage draining pipe 36. The water supply pipe 42 is used for supplying water to the water storage tank 38, and the sewage discharge pipe 36 is used for discharging sewage in the water storage tank 38 when the water storage tank 38 is overhauled.
In this embodiment, the second water circulation pipeline includes a first water pipeline 40 and a second water pipeline 39, one end of the first water pipeline 40 is connected to the heat-releasing water outlet of the water storage tank 38, the other end of the first water pipeline 40 is connected to the water inlet of the user 23, one end of the second water pipeline 39 is connected to the heat-releasing water return port of the water storage tank 38, the other end of the second water pipeline 39 is connected to the water outlet of the user 23, and the first water pipeline 40 or the second water pipeline 39 is connected to the circulation pump 48. When the circulation pump 48 is operated, water in the second water circulation line flows back and forth between the reservoir 38 and the user 23 (absorbing heat when water flows through the reservoir 38, i.e., the reservoir 38 releasing heat, and releasing heat when water flows through the user 23), creating a water circulation. Wherein the first water circulation line stores heat extracted from the heat exchanger 20 in the reservoir 38 and the second water circulation line transfers heat from the reservoir 38 to the user 23.
As shown in fig. 1, the third oil line 10 is provided with an oil filter 11, the oil filter 11 is used for filtering the lubricating oil flowing to the compressor 14, and the oil filter 11 is located between the third connection point 34 and the compressor 14. An air inlet of the compressor 14 is connected to an air inlet pipe 13, and the air inlet pipe 13 is provided with an air filter 12. The air is filtered through an air filter 12 before entering the compressor 14.
As shown in fig. 1, a surge tank 8 is provided on the exhaust pipe 9, and a second condenser 30 is located between the surge tank 8 and the gas-oil separator 16. The surge tank 8 stabilizes the pressure of the compressed air discharged from the exhaust pipe 9.
In this embodiment, the air compressor waste heat recovery system includes two air coolers, arranges two air coolers respectively on second fluid pipeline 5 and blast pipe 9, and the air cooler of arranging on second fluid pipeline 5 is first condenser 28, and the air cooler of arranging on blast pipe 9 is second condenser 30. When the air compressor waste heat recovery system operates, two operation modes are provided: a first waste heat recovery mode (full heat recovery mode) and a second waste heat recovery mode (partial heat recovery mode).
The first waste heat recovery mode (total heat recovery mode) is suitable for the working condition with large heat demand, when the air compressor waste heat recovery system is in the first waste heat recovery mode, the first tap water valve 46 and the second tap water valve 2 are opened, normal-temperature tap water enters the cold side of the heat exchanger 20, heat is taken from lubricating oil flowing through the hot side of the heat exchanger 20, and hot water at 50 ℃ is prepared and supplied. And the lubricating oil from the oil-gas separator 16 enters the hot side of the heat exchanger 20 through the first oil pipeline 17 and exchanges heat with tap water in the first water circulation pipeline. In the above process, the heat release of the lubricating oil is large, that is, the temperature of the lubricating oil entering the second oil pipeline 5 from the heat exchanger 20 is lower than 30 ℃, the lubricating oil below 30 ℃ enters the first condenser 28, at this time, the air volume of the fan 29 is adjusted, the outlet air temperature of the second condenser 30 is controlled to be higher than 50 ℃ and blown to the first condenser 28, and the lubricating oil inside the first condenser 28 is heated, so as to realize the heat recovery of the compressed air in the exhaust pipe 9. When the temperature of the lubricant oil discharged from the first condenser 28 is lower than 65 ℃, the first control valve 32 branches the high-temperature lubricant oil to the third oil line 10 through the fourth oil line 35 to raise the oil return temperature of the compressor 14 so that the oil return temperature is kept at 65 ℃. Therefore, when the air compressor waste heat recovery system is in the first waste heat recovery mode (full heat recovery mode), the air compressor waste heat recovery system can recover heat in lubricating oil and also can recover heat in compressed air, and therefore the waste heat utilization maximization of the compressor 14 is achieved.
The second waste heat recovery mode (partial waste heat recovery mode) is suitable for the working condition with low heat demand, when the air compressor waste heat recovery system is in the second waste heat recovery mode (partial waste heat recovery mode), the full heat of the compressor 14 does not need to be completely recovered, the first tap water valve 46 and the second tap water valve 2 are closed, the pump body 24 is started, circulating water enters the cold side of the heat exchanger 20, heat is taken from lubricating oil, and hot water at 50 ℃ is prepared and supplied out. When the lubricating oil flows through the heat exchanger 20 for heat exchange, the heat release is small, when the temperature of the lubricating oil coming out of the heat exchanger 20 is higher than 65 ℃, the lubricating oil enters the first condenser 28, the air volume of the fan 29 is adjusted at the moment, the air outlet temperature of the second condenser 30 is controlled to be lower than 50 ℃ and blown to the first condenser 28, and the lubricating oil in the first condenser 28 is cooled to meet the oil return temperature requirement of the compressor 14. When the temperature of the lubricating oil coming out of the heat exchanger 20 is lower than 65 ℃, the fourth control valve 6 directly conveys the lubricating oil to the third oil pipeline 10 through the sixth oil pipeline 7, and because the temperature of the lubricating oil in the third oil pipeline 10 is lower than 65 ℃ and does not meet the oil return temperature requirement of the compressor 14, the first control valve 32 branches the high-temperature lubricating oil to the third oil pipeline 10 through the fourth oil pipeline 35 to improve the oil return temperature of the compressor 14 and keep the oil return temperature at 65 ℃.
It should be noted that, when the air compressor waste heat recovery system is in the second waste heat recovery mode (partial waste heat recovery mode), if the temperature of the lubricating oil coming out of the heat exchanger 20 is lower than 65 ℃, the lubricating oil in the second oil pipeline 5 can enter the third oil pipeline 10 through two modes, which are: (1) when the fourth control valve 6 is in the first state, the lubricating oil in the second oil line 5 directly enters the first condenser 28, and at this time, the fan 29 does not work, that is, the lubricating oil does not exchange heat when flowing through the first condenser 28 (at this time, the first condenser 28 only serves as an oil line), and the lubricating oil coming out of the first condenser 28 enters the third oil line 10. (2) When the fourth control valve 6 is in the second state, the lubricating oil in the second oil line 5 enters the third oil line 10 through the sixth oil line 7 under the action of the fourth control valve 6.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
the air compressor waste heat recovery system comprises a first condenser and a second condenser which are oppositely arranged, after a fan is started, the fan blows heat on the second condenser to the first condenser so as to heat oil in the first condenser, and then the heat in an exhaust pipe is recovered and utilized. Thus, the air compressor waste heat recovery system has two waste heat recovery states, when the air compressor waste heat recovery system is in the first waste heat recovery mode, water in the water source can enter the water inlet of the heat exchanger through the liquid inlet branch pipe and exchange heat with oil in the first oil pipeline to heat the water, because the heat consumption of the oil in the first oil pipeline is larger due to the process, the temperature of the oil entering the second oil pipeline is lower than a first preset temperature value, at the moment, the heat of gas in the exhaust pipe is recovered by combining the fan and the second condenser, and the oil entering the oil inlet of the compressor is heated by the heat, the double recovery of the heat of the oil in the first oil pipeline and the heat of the gas in the exhaust pipe is realized, and the problem of low waste heat utilization rate of a waste heat recovery system in the prior art is solved; when air compressor machine waste heat recovery system is in the second waste heat recovery mode, during water in the water source can not get into the heat exchanger, only heats the existing water in the pipeline subassembly, and the heat consumption of the fluid in the first fluid pipeline is less this moment, need not to heat the fluid that gets into the oil inlet of compressor, then only realizes the heat recovery of fluid in the first fluid pipeline, and the staff can select suitable waste heat recovery mode according to operating mode and user demand.
It is to be understood that the above-described embodiments are only a few, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the accompanying drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an air compressor machine waste heat recovery system which characterized in that includes:
a compressor (14);
an oil separator (16) communicating with an oil discharge port of the compressor (14);
the waste heat recovery device comprises a heat exchanger (20), a pipeline assembly, a water storage tank (38) and a switch structure, wherein the pipeline assembly comprises a liquid inlet pipe (25), a liquid inlet branch pipe (1) and a liquid outlet pipe (22), a water outlet of the heat exchanger (20) is communicated with the water storage tank (38) through the liquid outlet pipe (22), and a water inlet of the heat exchanger (20) is communicated with the water storage tank (38) through the liquid inlet pipe (25); the liquid inlet branch pipe (1) is communicated with a water source, and the switch structure is arranged on the liquid inlet branch pipe (1) and used for controlling the on-off state of the liquid inlet branch pipe (1) and the liquid inlet pipe (25);
the oil inlet of the heat exchanger (20) is communicated with the oil outlet of the oil-gas separator (16) through a first oil liquid pipeline (17), and the oil outlet of the heat exchanger (20) is communicated with the first condenser (28) through a second oil liquid pipeline (5);
the second condenser (30) is communicated with an exhaust port of the oil-gas separator (16) through an exhaust pipe (9), and the second condenser (30) is arranged opposite to the first condenser (28);
a fan (29), wherein the air outlet direction of the fan (29) is the direction from the second condenser (30) to the first condenser (28);
the waste heat recovery system of the air compressor is provided with a first waste heat recovery mode and a second waste heat recovery mode, and when the waste heat recovery system of the air compressor is in the first waste heat recovery mode, the liquid inlet branch pipe (1) is controlled to be communicated with the liquid inlet pipe (25) through the switch structure; when the air compressor waste heat recovery system is in the second waste heat recovery mode, the liquid inlet branch pipe (1) and the liquid inlet pipe (25) are controlled to be disconnected and communicated through the switch structure.
2. The air compressor waste heat recovery system of claim 1, further comprising:
a third oil line (10), wherein one end of the third oil line (10) is communicated with an oil inlet of the compressor (14);
the other end of the third oil pipeline (10) is communicated with the fourth oil pipeline (35);
the first control valve (32) is arranged on the first oil pipeline (17), the first control valve (32) is connected with the fourth oil pipeline (35), and the first control valve (32) has a first state of controlling all oil in the first oil pipeline (17) to enter the heat exchanger (20) and a second state of controlling at least part of oil to enter the fourth oil pipeline (35);
a first temperature detection device for detecting a temperature of the oil discharged from the first condenser (28); when the air compressor waste heat recovery system is in the first waste heat recovery mode and the temperature detection value of the first temperature detection device is smaller than a first preset temperature value, the first control valve (32) is in the second state.
3. The air compressor waste heat recovery system of claim 1, wherein the waste heat recovery device further comprises:
a pump body (24) arranged on the liquid inlet pipe (25) and/or the liquid outlet pipe (22); when the air compressor waste heat recovery system is in the first waste heat recovery mode, controlling the pump body (24) to stop running; when the air compressor waste heat recovery system is in the second waste heat recovery mode, the pump body (24) is controlled to be started so as to pump water in the water storage tank (38) into the heat exchanger (20).
4. The air compressor waste heat recovery system of claim 1, further comprising:
a second control valve (58) provided on an end portion of the exhaust pipe (9), the second control valve (58) including a valve body having an overflowing hole through which an inner cavity of the exhaust pipe (9) communicates with the exhaust hole (53) and an exhaust hole (53), and a sealing structure (56); the sealing structure (56) is movably disposed within the valve body to block or avoid the flowthrough orifice.
5. The air compressor waste heat recovery system of claim 4, wherein the second control valve (58) further comprises:
and the elastic structure (54) is arranged in the valve body, and the elastic structure (54) is used for applying elastic force to the sealing structure (56) to move towards the overflowing hole so as to seal the overflowing hole through the sealing structure (56).
6. The air compressor residual heat recovery system according to claim 4, wherein the overflowing hole comprises a first overflowing hole (57) and a second overflowing hole (55) which are communicated with each other, and the valve body comprises:
a first cylinder (49) connected to the exhaust pipe (9) and communicating with the exhaust pipe (9);
the second cylinder body (51) is connected with the first cylinder body (49), a partition plate (50) is arranged in the second cylinder body (51), the partition plate (50) divides the inner cavity of the second cylinder body (51) into an installation cavity and a transition cavity, the wall of the installation cavity is provided with the first overflowing hole (57), the partition plate (50) is provided with the second overflowing hole (55), the sealing structure (56) is movably arranged in the installation cavity, and the transition cavity is communicated with the exhaust hole (53); wherein the transition cavity is disposed around the mounting cavity.
7. The air compressor waste heat recovery system of claim 1, further comprising:
a third control valve (19) disposed on the first oil line (17) and between the gas-oil separator (16) and the heat exchanger (20);
a fifth oil line (27), the fifth oil line (27) being connected to both the third control valve (19) and the second oil line (5); the third control valve (19) is provided with a first state for controlling all oil in the first oil pipeline (17) to enter the heat exchanger (20) and a second state for controlling all oil in the first oil pipeline (17) to enter the fifth oil pipeline (27).
8. The air compressor waste heat recovery system of claim 1, further comprising:
the second temperature detection device (3) is arranged on the liquid inlet pipe (25); and/or the presence of a gas in the gas,
the third temperature detection device (26) is arranged on the liquid outlet pipe (22); and/or the presence of a gas in the gas,
the fourth temperature detection device (33) is arranged on the first oil liquid pipeline (17); and/or the presence of a gas in the gas,
and the fifth temperature detection device (4) is arranged on the second oil pipeline (5).
9. The air compressor waste heat recovery system of claim 2, further comprising:
a fourth control valve (6) arranged on the second oil liquid pipeline (5) and located between the first condenser (28) and the heat exchanger (20);
a sixth oil line (7), the fourth control valve (6) being connected to the third oil line (10) via the sixth oil line (7); the fourth control valve (6) is used for controlling oil in the second oil pipeline (5) to completely enter a first state in the first condenser (28) and controlling oil in the second oil pipeline (5) to completely enter a second state in the sixth oil pipeline (7).
10. The air compressor waste heat recovery system of claim 9, further comprising:
sixth temperature detecting means for detecting a temperature of the oil discharged from the heat exchanger (20); and when the air compressor waste heat recovery system is in the second waste heat recovery mode, the detection value of the sixth temperature detection device is smaller than a second preset temperature value, and the fourth control valve (6) is in the first state, controlling the fan (29) to stop running.
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| CN202210745186.8A CN115076068B (en) | 2022-06-28 | 2022-06-28 | Waste heat recovery system of air compressor |
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| CN202210745186.8A CN115076068B (en) | 2022-06-28 | 2022-06-28 | Waste heat recovery system of air compressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117006019A (en) * | 2023-10-07 | 2023-11-07 | 山东烯泰天工节能科技有限公司 | Cooling tube bundle for ship-borne compressor |
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| CN115076068B (en) | 2024-01-23 |
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