CN112377416A - Air compressor waste heat recovery device and compressed air drying equipment - Google Patents
Air compressor waste heat recovery device and compressed air drying equipment Download PDFInfo
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- CN112377416A CN112377416A CN202011280468.2A CN202011280468A CN112377416A CN 112377416 A CN112377416 A CN 112377416A CN 202011280468 A CN202011280468 A CN 202011280468A CN 112377416 A CN112377416 A CN 112377416A
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- 239000002918 waste heat Substances 0.000 title claims abstract description 33
- 238000007605 air drying Methods 0.000 title claims abstract description 23
- 238000011084 recovery Methods 0.000 title claims abstract description 18
- 239000003921 oil Substances 0.000 claims abstract description 177
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 166
- 238000001816 cooling Methods 0.000 claims abstract description 165
- 239000010724 circulating oil Substances 0.000 claims abstract description 65
- 239000012530 fluid Substances 0.000 claims description 28
- 238000001035 drying Methods 0.000 claims description 25
- 238000005338 heat storage Methods 0.000 claims description 22
- 230000007246 mechanism Effects 0.000 claims description 22
- 239000007788 liquid Substances 0.000 claims description 15
- 238000004108 freeze drying Methods 0.000 claims description 13
- 230000000694 effects Effects 0.000 abstract description 31
- 238000009776 industrial production Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 description 41
- 230000017525 heat dissipation Effects 0.000 description 35
- 239000007789 gas Substances 0.000 description 29
- 239000000498 cooling water Substances 0.000 description 19
- 238000000034 method Methods 0.000 description 13
- 230000008859 change Effects 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 8
- 239000002826 coolant Substances 0.000 description 7
- 238000003860 storage Methods 0.000 description 7
- 238000005265 energy consumption Methods 0.000 description 6
- 239000003507 refrigerant Substances 0.000 description 6
- 230000009467 reduction Effects 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 5
- 230000006872 improvement Effects 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010257 thawing Methods 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
- 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
- F04C29/042—Heating; Cooling; Heat insulation by injecting a fluid
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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
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
- F04C28/26—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels
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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
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/28—Safety arrangements; Monitoring
-
- 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
Abstract
The application provides an air compressor machine waste heat recovery device and compressed air drying equipment. The air compressor waste heat recovery device comprises an air compressor, wherein the air compressor comprises a shell, a circulating oil duct, an extended oil duct, a first valve and a second valve, two ends of the circulating oil duct are respectively communicated with an oil inlet and an oil outlet of the shell, the circulating oil duct is provided with a first connecting portion and a second connecting portion, two ends of the extended oil duct are respectively connected with the first connecting portion and the second connecting portion, two ends of the extended oil duct are communicated with the circulating oil duct, and the first valve is arranged on the circulating oil duct. The water absorbing the heat of the high-temperature cooling oil is conveyed to the first box body through the first circulating water pipe, so that the effect of collecting the work heat of the air compressor is achieved, the water heat in the first box body can be further used for links needing processing in industrial production or heat supply in life, and the heat utilization rate is further improved.
Description
Technical Field
The invention relates to the technical field of compressed air drying, in particular to an air compressor waste heat recovery device and compressed air drying equipment.
Background
Compressed air has wide application in industrial production, but because moisture, oil and dust contained in the compressed air have great harm to equipment and products used by the compressed air, the benefits brought by the compressed air are greatly reduced, and therefore, the compressed air needs to be purified, and the key point of the purification is drying treatment, because the oil and dust can be removed by an oil separator and various filters, and water vapor in the air often exists in an overheated mode and cannot be removed by a common mechanical method.
The conventional method for preparing and purifying compressed air is to compress air and purify air by using a refrigeration type compressed air drying device, and the conventional refrigeration type compressed air drying device has large energy consumption loss during working, and specifically shows the following two aspects.
The air compressor is mainly cooled through an air cooling and oil cooling mode, and after the air compressor is cooled, heat brought out from the inside of the air compressor is directly dissipated in the atmosphere, so that heat loss is large.
In the process of purifying the compressed air, the high-temperature compressed air exchanges heat with the low-temperature low-pressure refrigerant liquid in the evaporator to cool and condense the compressed air, so that the effect of removing moisture in the compressed air is achieved.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the air compressor waste heat recovery device and the compressed air drying equipment, which can collect the waste heat of the compressed air drying equipment, improve the utilization efficiency of energy and further reduce the energy consumption.
The purpose of the invention is realized by the following technical scheme:
the utility model provides an air compressor machine waste heat recovery device, includes:
the air compressor comprises a shell, a circulating oil duct, an extended oil duct, a first valve and a second valve, wherein two ends of the circulating oil duct are respectively communicated with an oil inlet and an oil outlet of the shell, the circulating oil duct is provided with a first connecting part and a second connecting part, two ends of the extended oil duct are respectively connected with the first connecting part and the second connecting part, so that two ends of the extended oil duct are both communicated with the circulating oil duct, the first valve is arranged on the circulating oil duct and is positioned between the first connecting part and the second connecting part, and the second valve is arranged on the extended oil duct;
the heat exchange mechanism comprises a first plate heat exchanger and a second plate heat exchanger, the first plate heat exchanger is connected with the circulating oil duct, and the second plate heat exchanger is connected with the extended oil duct;
heat-retaining water tank set spare, heat-retaining water tank set spare includes first box, second box, first circulating pipe and second circulating pipe, first circulating pipe's both ends respectively with the water inlet and the delivery port intercommunication of first box, first circulating pipe with first plate heat exchanger connects, second circulating pipe's both ends respectively with the water inlet and the delivery port intercommunication of second box, second circulating pipe with second plate heat exchanger connects.
In one embodiment, the first box further comprises a temperature measuring instrument for detecting and displaying the temperature at the water inlet of the first box.
In one embodiment, the heat storage water tank assembly further includes a tank communicating pipe and a third valve, two ends of the tank communicating pipe are respectively communicated with the first tank and the second tank, and the third valve is disposed on the tank communicating pipe.
In one embodiment, the first valve, the second valve and the third valve are all solenoid valves.
In one embodiment, the heat storage water tank assembly further comprises a first fluid pump, and the first fluid pump is arranged on the first circulating water pipe.
In one embodiment, the hot water storage tank assembly further comprises a second fluid pump, and the second fluid pump is positioned on the second circulating water pipe.
The utility model provides a compressed air drying equipment, includes the air compressor machine waste heat recovery device of any preceding embodiment, compressed air drying equipment still includes:
a pre-cooler connected to the air compressor;
the water-cooling drying device comprises a water-cooling shell and a water-cooling circulating pipeline, the water-cooling shell is connected with the pre-cooler, part of the water-cooling circulating pipeline is positioned inside the water-cooling shell, and the water-cooling circulating pipeline is connected with the first box body;
and the freeze drying device is respectively connected with the water-cooling shell and the front cooler.
In one embodiment, the part of the water-cooling circulation pipeline, which is positioned in the water-cooling shell, is in a spiral shape.
In one embodiment, the water-cooling drying device further comprises a gas-liquid separator, and the gas-liquid separator is connected with the water-cooling shell.
In one embodiment, the water-cooling drying device further comprises a third fluid pump, and the third fluid pump is arranged on the water-cooling circulation pipeline.
Compared with the prior art, the invention has at least the following advantages:
1. the water absorbing the heat of the high-temperature cooling oil is conveyed into the first box body through the first circulating water pipe, so that the effect of collecting the working heat of the air compressor is achieved, the heat of the water in the first box body can be further used for the links needing processing in industrial production or heat supply in life, and the utilization rate of the heat is further improved;
2. the first valve and the second valve can flexibly change the flow passage of the cooling oil, and when the oil temperature is low, only the first box body and the first circulating water pipe are adopted for heat collection, so that the heat dissipation effect of the air compressor can be ensured, and meanwhile, the first box body has enough heat energy to be utilized in work and life; when the oil temperature is high, the first circulating water pipe and the second circulating water pipe are adopted to collect heat of the cooling oil together, the cooling requirement of the air compressor is met by increasing the heat absorption capacity, the effect of absorbing waste heat to a greater extent can be achieved, and the energy utilization efficiency is further improved;
3. compared with the traditional air cooling method, the method has higher heat absorption effect, is beneficial to reducing the temperature of the compressed air output by the air compressor, and correspondingly reduces the consumed energy required by the subsequent cooling of the compressed air, thereby being beneficial to energy conservation and emission reduction and creating greater benefit;
4. with the mode in cooling oil heat transfer to the heat-retaining water tank set spare, have higher heat absorption effect for traditional air-cooled cooling means, consequently air compressor need not to be cooled down through the air-cooled, can not cause the direct condition of scattering and disappearing in the atmosphere of a large amount of heats, avoids causing the improvement of air compressor ambient temperature, and then has avoided the too high condition of air compressor temperature, is favorable to air compressor's steady operation and increase life.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic view of a compressed air drying apparatus in one embodiment;
fig. 2 is a flowchart of a waste heat collection control method in an embodiment.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, 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 invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, an embodiment of an air compressor waste heat recovery device 100 includes an air compressor 110, a heat exchange mechanism 120, and a hot water storage tank assembly 130. The air compressor 110 includes a housing, a circulation oil passage 111, an extension oil passage 112, a first valve 140, and a second valve 150. Two ends of the circulating oil duct 111 are respectively communicated with an oil inlet and an oil outlet of the housing, the circulating oil duct 111 is provided with a first connecting portion 111a and a second connecting portion 111b, two ends of the expanding oil duct 112 are respectively connected with the first connecting portion 111a and the second connecting portion 111b, so that two ends of the expanding oil duct 112 are both communicated with the circulating oil duct 111, the first valve 140 is arranged on the circulating oil duct, the first valve 140 is positioned between the first connecting portion 111a and the second connecting portion 111b, and the second valve 150 is arranged on the expanding oil duct 112. The heat exchange mechanism 120 includes a first plate heat exchanger 121 and a second plate heat exchanger 122, the first plate heat exchanger 121 is connected to the circulation oil passage 111, and the second plate heat exchanger 122 is connected to the extension oil passage 112. The heat storage water tank assembly 130 comprises a first tank body 131, a second tank body 132, a first circulating water pipe 133 and a second circulating water pipe 134, two ends of the first circulating water pipe 133 are respectively communicated with a water inlet and a water outlet of the first tank body 131, the first circulating water pipe 133 is connected with the first plate heat exchanger 121, two ends of the second circulating water pipe 134 are respectively communicated with a water inlet and a water outlet of the second tank body 132, and the second circulating water pipe 134 is further connected with the second plate heat exchanger 122.
In the present embodiment, the air compressor 110 is used for preparing compressed air, the air compressor 110 includes a housing, a circulation oil passage 111 and an extension oil passage 112, the air is compressed in the housing of the air compressor 110, and the inside of the pipe of the circulation oil passage 111 is communicated with the inside of the housing of the air compressor 110 for conveying cooling oil to the screw inside the housing, so as to achieve the effect of preventing overheating. The circulating oil duct 111 is connected with the first plate heat exchanger 121, the first plate heat exchanger 121 is connected with the first circulating water pipe 133, the first circulating water pipe 133 is connected with the first box body 131, the heat of the high-temperature cooling oil in the circulating oil duct 111 is transferred to the first circulating water pipe 133 through the first plate heat exchanger 121, the first circulating water pipe 133 transports the water absorbing the heat of the high-temperature cooling oil to the first box body 131, and then the effect of collecting the work-making heat of the air compressor 110 is achieved, the heat of the water in the first box body 131 can be further used for links needing processing in industrial production, or used for heating in winter and defrosting of an air conditioner in summer, and the effect of improving the energy utilization efficiency is achieved.
Further, when the temperature at the water inlet of the first tank 131 is high, it indicates that the heat absorption efficiency of the first circulating water pipe 133 is not enough to meet the heat dissipation requirement of the cooling oil, and further, the internal temperature of the air compressor 110 will be increased, in order to improve the waste heat collection efficiency and further improve the energy utilization efficiency, the circulating oil passage 111 is connected in parallel with the extension oil passage 112, the extension oil passage 112 is connected with the second plate heat exchanger 122, the second plate heat exchanger 122 is connected with the second circulating water pipe 134, and the second circulating water pipe 134 is connected with the second tank 132. When the water temperature at the water inlet of the first tank 131 is high, the first valve 140 of the circulating oil passage 111 may be closed, and the second valve 150 of the extended oil passage 112 may be opened, so that the cooling oil of the circulating oil passage 111 flows into the extended oil passage 112, the high-temperature cooling oil exchanges heat with the water of the second circulation water pipe 134 at the extended oil passage 112, heat is transferred to the water of the second circulation water pipe 134, and the second circulation water pipe 134 transports the water, which has absorbed the heat of the high-temperature cooling oil, into the second tank 132. That is, when the cooling water output from the first tank 131, that is, the heat absorption efficiency, is not enough to satisfy the heat dissipation requirement of the cooling oil, the heat absorption efficiency of the cooling oil is increased by adding more cooling media, so as to accelerate the heat collection speed and effectively cool the cooling oil.
Further, the first valve 140 and the second valve 150 can flexibly change the flow path of the cooling oil, and when the oil temperature is low, only the first tank 131 and the first circulating water pipe 133 are used for heat collection, so that the heat dissipation effect of the air compressor 110 can be ensured, and the energy consumed for absorbing heat can be reduced; when the oil temperature is high, the first and second circulation water pipes 133 and 134 are used to collect heat from the cooling oil together, so as to satisfy the cooling requirement of the air compressor 110 by increasing the heat absorption efficiency, and since the first and second tanks are used to collect heat at the same time, the effect of absorbing waste heat to a greater extent can be achieved, and the energy utilization efficiency is further improved.
Furthermore, the mode of transferring the heat of the cooling oil to the heat storage water tank assembly 130 has a higher heat absorption effect compared with the traditional air cooling means, so that additional heat dissipation through a heat dissipation fan is not needed, and the electric energy required by the heat dissipation fan is saved; compared with the traditional air cooling method, the method for transferring the heat of the cooling oil to the heat storage water tank assembly 130 has a higher heat absorption effect, and is beneficial to reducing the temperature of the compressed air output by the air compressor 110. Because air cooling is not needed, the condition that a large amount of heat is directly dissipated in the atmosphere is avoided, the ambient temperature of the air compressor 110 is prevented from being increased, the condition that the temperature of the air compressor 110 is too high is further avoided, and the stable operation of the air compressor 110 is facilitated and the service life is prolonged.
In order to facilitate understanding of the temperature at the water inlet of the first tank 131, it is determined whether the heat absorption efficiency of the first tank 131 and the first circulating water pipe 133 can satisfy the heat dissipation requirement of the cooling oil, and the heat absorption efficiency is used as a basis for operating the first valve 140 and the second valve 150. As shown in fig. 1, in one embodiment, the first tank 131 further includes a temperature measuring instrument for detecting and displaying the temperature at the water inlet of the first tank 131. The temperature of the water inlet of the first tank 131 can be conveniently obtained through the temperature detector, whether the heat absorption efficiency of the first tank 131 and the first circulating water pipe 133 can meet the heat dissipation requirement of the cooling oil or not can be judged through the temperature of the water inlet of the first tank 131, if the heat absorption efficiency is not enough to cool the air compressor 110, the second circulating oil pipe is started, and the effect of improving the heat absorption efficiency is achieved by introducing more cooling media; sufficient to cool the air compressor 110, the second recycle line is not enabled.
Since the efficiency of the circulating water in the first tank 131 and the second tank 132 may not be completely consistent when absorbing heat, and the first tank 131 and the second tank 132 are in an isolated state, the first tank 131 and the second tank 132 may output different amounts of heat after collecting the heat, to avoid this, as shown in fig. 1, in one embodiment, the hot-water storage tank assembly 130 further includes a tank communicating pipe 135, two ends of the tank communicating pipe 135 are respectively connected to the first tank 131 and the second tank 132, and the third valve 136 is located on the tank communicating pipe 135. When using first circulating water pipe 133 and second circulating water pipe 134 to cool down the coolant oil simultaneously, third valve 136 also opens simultaneously for first box 131 and second box 132 can communicate each other, and then make the coolant water of first box 131 and second box 132 circulate each other, and the heat exchange can be accomplished fast to the coolant water that circulates each other, makes the coolant water temperature in first box 131 and the second box 132 unanimous, can make the heat that first box 131 and second box 132 exported unanimous.
In order to further improve the heat exchange efficiency, as shown in fig. 1, in one embodiment, the hot water storage tank assembly 130 further includes a first fluid pump 137, and the first fluid pump 137 is disposed on the first water circulation pipe 133. The water of the first circulation water pipe 133 is pressurized by the first fluid pump 137, so that the water circulates in the first circulation water pipe 133 and the first tank 131, when the pressure of the first fluid pump 137 is small, the water pressure is small so that the flow rate of water is slow, the amount of water exchanging heat with the high temperature cooling oil per unit time is small, therefore, the cooling effect and the waste heat absorption efficiency of the air compressor 110 are low, and when the oil temperature of the air compressor 110 rises, the output pressure of the first fluid pump 137 can be increased, the water pressure can be increased to accelerate the flowing speed of water, the water quantity for exchanging heat with the high-temperature cooling oil in unit time can be increased, the effect of improving the heat exchange efficiency can be achieved, the improvement of the heat exchange efficiency is beneficial to better cooling the air compressor 110, meanwhile, the oil-temperature heat absorption device is beneficial to rapidly absorbing oil-temperature heat, and avoids energy waste caused by more heat overflowing.
In order to further improve the heat exchange efficiency, as shown in fig. 1, in one embodiment, the hot water storage tank assembly 130 includes a second fluid pump 138, and the second fluid pump 138 is disposed on the second water circulation pipe 134. The water in the second circulation water pipe 134 is pressurized by the second fluid pump 138, so that the water circulates between the second circulation water pipe 134 and the second tank 132, when the pressure of the second fluid pump 138 is small, the water pressure is small, so that the flow rate of water is slow, the amount of water exchanging heat with the high-temperature cooling oil per unit time is small, therefore, the cooling effect and the waste heat absorption efficiency of the air compressor 110 are low, and when the oil temperature of the air compressor 110 rises, the output pressure of the second fluid pump 138 can be increased, the water pressure can be increased to accelerate the flowing speed of water, the water quantity for exchanging heat with the high-temperature cooling oil in unit time can be increased, the effect of improving the heat exchange efficiency can be achieved, the improvement of the heat exchange efficiency is beneficial to better cooling the air compressor 110, meanwhile, the oil-temperature heat absorption device is beneficial to rapidly absorbing oil-temperature heat, and avoids energy waste caused by more heat overflowing.
In order to control the first valve 140, the second valve 150 and the third valve 136 more conveniently and quickly to change the cooling and heat absorption capacity of the device at different oil temperatures, as shown in fig. 1, in one embodiment, the first valve 140, the second valve 150 and the third valve 136 are all solenoid valves. Because the first valve 140, the second valve 150 and the third valve 136 are all electromagnetic valves, the opening and closing states of the first valve 140, the second valve 150 and the third valve 136 can be adjusted remotely through an electronic control system, manual field operation is not needed, and the operation is more convenient and faster.
As shown in fig. 1, the present application further provides a compressed air drying device 10, which includes the air compressor waste heat recovery device 100 in any of the above embodiments, and further includes a pre-cooler 200, a water-cooling drying device 300, and a freeze-drying device 400. The pre-cooler 200 is connected to the air compressor 110. The water-cooling drying apparatus 300 includes a water-cooling casing 310 and a water-cooling circulation pipe 320, the water-cooling casing 310 is connected to the front cooler 200, a part of the water-cooling circulation pipe 320 is located inside the water-cooling casing 310, and the water-cooling circulation pipe 320 is connected to the first casing 131. The freeze-drying device 400 is connected to the water-cooled casing 310 and the pre-cooler 200, respectively.
In this embodiment, the high-temperature compressed gas output by the air compressor 110 first enters the pre-cooler 200, then sequentially passes through the water-cooling drying device 300 and the freeze-drying device 400, the temperature reduction and drying are completed in the water-cooling drying device 300 and the freeze-drying device 400, finally, the low-temperature dried compressed gas returns to the pre-cooler 200 again to perform heat exchange with the high-temperature compressed gas output by the air compressor 110, the temperature rise of the low-temperature dried compressed gas is completed through the heat exchange, and finally, the pre-cooler 200 outputs the compressed air with proper temperature and drying.
Further, as can be seen from the above-mentioned compressed gas flowing process, the high-temperature compressed gas output from the air compressor 110 will pass through three cooling stages, the first stage is to exchange heat with the compressed air that has been cooled and dried when entering the pre-cooler 200, the main function of the stage is to heat the compressed air that has been cooled and dried by the high-temperature compressed gas that has just entered the pre-cooler 200, and then output the compressed gas with a proper temperature, and the cooling effect of the stage on the high-temperature compressed gas is very limited. The second stage is to perform cooling and drying in the water-cooling drying device 300, the compressed gas after the first cooling stage is delivered to the water-cooling shell 310 of the water-cooling drying device 300, part of the water-cooling circulation pipeline 320 is located inside the water-cooling shell 310, because the water temperature of the water-cooling circulation pipeline 320 is lower than the temperature of the compressed gas in the water-cooling shell 310, the compressed gas exchanges heat with the water in the water-cooling circulation pipeline 320, the temperature of the compressed gas decreases, the water temperature of the water-cooling circulation pipeline 320 increases, the water-cooling circulation pipeline 320 is connected with the first box 131 of the air compressor waste heat recovery device 100, the water absorbing the heat of the compressed gas flows into the first box 131, and the effect of collecting and utilizing the heat of the compressed gas is achieved.
Further, the third stage is to cool the freeze-drying device 400, the freeze-drying device 400 mainly comprises a refrigeration compressor, a condenser, an evaporator and an expansion valve, which are connected in sequence through a pipeline, a coolant for cooling the compressed air continuously circulates in the pipeline and continuously exchanges heat and continuously changes state, in the third stage, the compressed gas is conveyed into the evaporator, a low-temperature and low-pressure refrigerant liquid is introduced into the evaporator, the compressed gas and the refrigerant liquid complete heat exchange, namely, the compressed gas is cooled, a large amount of moisture is obtained from the cooled compressed gas, the obtained moisture is separated from the compressed gas through a separator, namely, the compressed gas is cooled and dried, finally, the compressed gas is introduced into the pre-cooler 200 again and exchanges heat with the high-temperature compressed gas just introduced into the pre-cooler 200, the whole purification process of the compressed air is completed.
Further, in the process of cooling and drying the compressed air, the water-cooling drying device 300 and the freeze-drying device 400 are used for cooling and drying the compressed air together, and the freeze-drying device 400 does not need to bear most of cooling work on the compressed air, so that compared with the traditional air-cooled compressed air drying equipment 10, the use of the refrigerant can be reduced, the energy for compressing and cooling the refrigerant can be reduced, the use intensity of a refrigeration compressor and a condenser can be reduced, and the effects of saving energy, reducing emission and reducing energy consumption can be achieved. Meanwhile, part of the heat of the compressed air is taken away by the liquid in the water-cooling circulating pipeline 320 of the water-cooling drying device 300, the liquid absorbing the heat of the compressed air is conveyed to the first box body 131, the heat of the compressed air can be collected and utilized, the heat is prevented from being wasted by heat exchange with the refrigerant completely, and the utilization rate of the heat is further improved.
In order to improve the heat exchange efficiency between the compressed air and the water-cooling circulation pipe 320, as shown in fig. 1, in one embodiment, the water-cooling circulation pipe 320 has a spiral shape at the inner portion of the water-cooling casing 310. Because the water-cooling circulation pipeline 320 in the water-cooling shell 310 is in a spiral pipeline shape, compared with a straight line shape or a zigzag shape, the surface of the water-cooling circulation pipeline 320 in the shape has a larger surface area, and the larger surface area enables the water-cooling circulation pipeline 320 to have a larger heat exchange area, so that the heat exchange efficiency of the compressed air in the water-cooling shell 310 can be improved, the temperature of the compressed air is reduced faster, the heat absorption efficiency of the water-cooling circulation pipeline 320 on the compressed air is higher, more heat can be absorbed, the use strength of a refrigeration compressor and a condenser can be further reduced, and the effects of saving energy, reducing emission and reducing energy consumption are achieved.
In the water-cooled casing 310 of the water-cooled drying device 300, after the compressed air completes heat exchange with the water-cooled circulation pipeline 320 in the water-cooled casing 310, the temperature of the compressed air will drop, and the compressed air with the dropped temperature will collect moisture, in order to improve the drying effect on the compressed air, as shown in fig. 1, in one embodiment, the water-cooled drying device 300 further comprises a gas-liquid separator 330, and the gas-liquid separator 330 is connected with the water-cooled casing 310. The compressed air cooled in the water-cooled housing 310 is introduced into the gas-liquid separator 330, the gas-liquid separator 330 separates the compressed air from the moisture accumulated therein, and then the compressed air is introduced into the freeze-drying device 400, and is cooled and separated from gas and liquid again, so that the problem that the moisture accumulated in the water-cooled housing 310 and the compressed air are introduced into the freeze-drying device 400 together to cause the compressed air to be difficult to be completely dried in the freeze-drying device 400 is solved through two times of gas-liquid separation. Meanwhile, through two times of gas-liquid separation, the moisture in the compressed air can be further separated, and the drying effect on the compressed air is improved.
In order to further improve the heat exchange efficiency, as shown in fig. 1, in one embodiment, the water-cooling circulation pipe 320 includes a third fluid pump 321, and the third fluid pump 321 is disposed on the water-cooling circulation pipe 320. The water-cooling drying apparatus 300 includes a third fluid pump 321, and the third fluid pump 321 is disposed on the water-cooling circulation pipe 320. The water in the water-cooling circulation pipe 320 is pressurized by the third fluid pump 321, so that the water circulates in the water-cooling circulation pipe 320 and the first tank 131, when the pressure of the third fluid pump 321 is small, the water pressure is small so that the flow rate of water is slow, the amount of water heat-exchanged with the compressed gas per unit time is small, therefore, the cooling effect and the waste heat absorption efficiency on the compressed air are low, and when the temperature of the compressed air rises, the output pressure of the third fluid pump 321 can be increased, the water pressure can be increased to accelerate the flow speed of water, the water quantity for heat exchange with the compressed gas in unit time can be increased, the effect of improving the heat exchange efficiency can be achieved, the improvement of the heat exchange efficiency is beneficial to better cooling the compressed gas, meanwhile, the heat of the compressed gas can be absorbed quickly, and the energy waste caused by the overflow of more heat can be avoided.
In one embodiment, the heat generated by the compressed air drying equipment is collected by a waste heat collecting method, the compressed air drying equipment comprises an air compressor, a heat exchange mechanism and a heat storage water tank mechanism, the air compressor comprises a shell, a circulation oil duct and an expansion oil duct, two ends of the circulation oil duct are respectively communicated with an oil inlet and an oil outlet of the shell, the circulation oil duct is provided with a first connecting part and a second connecting part, two ends of the expansion oil duct are respectively connected with the first connecting part and the second connecting part, and two ends of the expansion oil duct are both communicated with the circulation oil duct; the heat exchange mechanism comprises a first plate heat exchanger and a second plate heat exchanger, the first plate heat exchanger is used for exchanging and collecting heat of the circulating oil duct, and the second plate heat exchanger is used for exchanging and collecting heat of the extended oil duct; the heat storage water tank mechanism is used for respectively storing the heat collected by the first plate heat exchanger and the second plate heat exchanger;
as shown in fig. 2, the waste heat collection control method includes the following steps: setting a preset temperature value; acquiring an actual temperature value of an oil outlet end of the circulating oil duct; comparing the actual temperature value with a preset temperature value to obtain comparison data; and controlling whether the extended oil passage is communicated with the circulating oil passage or not according to the comparison data.
Further, gas is compressed in a shell of the air compressor, the pipeline inside of the circulating oil duct is communicated with the shell inside of the air compressor and used for conveying cooling oil for a screw rod inside the shell, the overheating prevention effect is achieved, the circulating oil duct and the heat storage water tank mechanism are in heat exchange with the first plate heat exchanger, heat of high-temperature cooling oil in the circulating oil duct is transferred to the heat storage water tank mechanism through the first plate heat exchanger, and then the effect of collecting the heat of work done by the air compressor is achieved. The expansion oil duct is communicated with the circulating oil duct through the first connecting portion and the second connecting portion respectively, so that cooling oil can pass through the expansion oil duct, the expansion oil duct and the heat storage water tank mechanism exchange heat with the second plate heat exchanger, heat of high-temperature cooling oil in the expansion oil duct is transmitted to the second box body through the second plate heat exchanger, and the effect of collecting heat is achieved.
Furthermore, the compressed air drying equipment collects the heat generated in the preparation process of the compressed air, the temperature of the cooling oil of the air compressor can be changed along with the adjustment of the power of the air compressor, the change of seasons or workplaces can also result in the temperature change of the compressed air drying equipment, and further result in the temperature change of the cooling oil of the air compressor, the requirement of heat dissipation and temperature reduction of the air compressor is correspondingly changed due to the temperature change of the cooling oil, the waste heat collection control method can rapidly and accurately analyze the relation between the heat collection efficiency of the cooling oil and the requirement of heat dissipation and temperature reduction by acquiring the temperature of the oil outlet end of the circulating oil pipe, and the corresponding communication state of the expansion oil passage and the circulating oil passage is changed according to the different relations between the heat collection efficiency and the requirement of heat dissipation and temperature reduction, therefore, the heat absorption efficiency is consistent with the heat dissipation and cooling requirements, and the balance of heat collection and heat dissipation and cooling is achieved.
In order to better understand the waste heat collection control method of the present invention, the waste heat collection control method of the present invention is further explained below, the waste heat collection control method collecting heat of the compressed air drying device, the waste heat collection control method comprising the steps of:
s100, setting a preset temperature value. The preset temperature value is used as a judgment condition in the subsequent control step.
S200, acquiring an actual temperature value at the oil inlet end of the circulating oil duct. The heat storage water tank mechanism outputs cooling water, the cooling water exchanges heat with cooling oil of the circulating oil duct through the first plate heat exchanger, heat of the cooling oil in the oil duct is absorbed, the cooling oil is cooled, and the cooling oil flows into the shell of the air compressor again after being cooled, so that the air compressor is cooled and continuously circulates. When the heat absorption efficiency of the cooling water can meet the cooling requirement of the cooling oil, the temperature of the oil outlet end of the circulating oil duct will rise.
S300, comparing the actual temperature value with a preset temperature value to obtain comparison data. In this step, the oil outlet end temperature value of the circulating oil pipe is compared with the preset temperature value, namely, the difference is made between the two data values, the comparison data can be obtained after the difference is made, whether the oil outlet end temperature value is larger than the preset temperature value or not is obtained in the comparison data, when the oil outlet end temperature value is larger than the preset temperature value, the current heat absorption efficiency of the circulating oil pipe is represented to be insufficient to meet the heat dissipation requirement of the circulating oil pipe, when the oil outlet end temperature value is not larger than the preset temperature value, the current heat absorption efficiency of the circulating oil pipe is represented to be sufficient to meet the heat dissipation requirement of the circulating oil pipe, and the comparison data can be used.
And S400, controlling whether the expansion oil channel is communicated with the circulating oil channel according to the comparison data. After the comparison data of the temperature value of the oil outlet end and the preset temperature value is analyzed, the current heat exchange condition of the circulating oil pipe can be obtained, when the temperature value of the oil outlet end is not larger than the preset temperature value, the current heat absorption efficiency of the circulating oil pipe is represented to be enough to meet the heat dissipation requirement of the circulating oil pipe, the expansion oil passage and the circulating oil passage are not communicated, and cooling oil is only subjected to heat exchange with the heat storage water tank mechanism through the first plate heat exchanger. When the temperature value of the oil outlet end is greater than the temperature preset value, the heat absorption efficiency of the circulating oil pipe at present is not enough to meet the heat dissipation requirement of the circulating oil pipe, the expansion oil duct is communicated with the circulating oil duct through control, cooling oil of the circulating oil pipe can flow into the expansion oil duct, heat exchange is carried out between the expansion oil duct and the heat storage water tank mechanism through the second plate heat exchanger, namely, the first plate heat exchanger and the second plate heat exchanger work simultaneously, heat exchange is carried out on the cooling oil, the heat exchange quantity of the cooling oil in unit time is effectively improved, the heat absorption efficiency of the cooling oil is improved, and the heat dissipation requirement of the circulating oil duct is met.
In one embodiment, the alignment data comprises: the actual temperature value is less than or equal to a preset temperature value; or the actual temperature value is larger than the preset temperature value. The specific principle of comparison is as follows: and (3) making a difference between the actual temperature value of the oil outlet end and the temperature preset value, and if the difference between the actual temperature value and the temperature preset value is greater than 0, namely the actual temperature value is greater than the temperature preset value, analyzing to obtain a result that the heat absorption efficiency of the cooling oil is not enough to meet the heat dissipation requirement. If the difference between the actual temperature value and the preset temperature value is less than or equal to 0, namely the actual temperature value is less than or equal to the preset temperature value, the result that the heat absorption efficiency of the cooling oil is enough to meet the heat dissipation requirement can be obtained through analysis.
In one embodiment, controlling whether the extended oil passage is communicated with the circulating oil passage according to the comparison data includes: when the actual temperature value is smaller than or equal to the preset temperature value, controlling the expansion oil passage not to be communicated with the circulating oil passage; and when the actual temperature value is greater than the preset temperature value, controlling the extension oil passage to be communicated with the circulating oil passage. When the actual temperature value is smaller than or equal to the preset temperature value, the heat absorption efficiency of the cooling water is larger than the heat dissipation and cooling requirements of the cooling oil, and under the current state, the extension oil duct and the circulation oil duct are not communicated, so that the cooling oil cannot enter the extension oil duct, the cooling oil exchanges heat with the heat storage water tank mechanism only through the first plate heat exchanger, and the heat dissipation requirements of the cooling oil are met while the energy consumption is reduced. When actual temperature value is greater than the temperature default, it is not enough to satisfy the heat dissipation cooling demand of cooling oil to show the endothermic efficiency of cooling water, steerable extension oil duct and circulation oil duct intercommunication under this state for during the cooling oil flows into the extension oil duct, the cooling oil carries out the heat exchange through first plate heat exchanger and second plate heat exchanger and heat storage water tank mechanism simultaneously promptly, makes the heat transfer volume of cooling oil in the unit interval improve, and then promotes the heat absorption efficiency to the cooling oil, in order to satisfy the heat dissipation demand of cooling oil.
In one embodiment, the temperature setpoint comprises a first temperature setpoint and a second temperature setpoint, the second temperature preset value being greater than the first temperature preset value; the step of controlling whether the extended oil duct is communicated with the circulating oil duct according to the comparison data specifically comprises the following steps: and controlling whether the expansion oil duct is communicated with the circulating oil duct or not according to the comparison data, and controlling the water flow speed of the heat storage water tank mechanism. Through control cooling water flow rate, change the cooling water volume that carries out the heat exchange with the cooling oil between the unit, and then change the endothermic efficiency to the cooling oil to the heat dissipation demand of adaptation cooling oil.
In one embodiment, the alignment data comprises: the actual temperature value is less than or equal to a first preset temperature value; or the actual temperature value is greater than the first preset temperature value and less than or equal to the second preset temperature value; or the actual temperature value is larger than the second temperature preset value. In this embodiment, the second temperature preset value is greater than the second temperature preset value, and the temperature is divided into three intervals, that is, the actual temperature value at the oil outlet end is less than or equal to the first temperature preset value, the actual temperature value is greater than the first temperature value and less than or equal to the second temperature value, and the actual temperature value is greater than the second temperature value, the three temperature intervals respectively correspond to the heat absorption efficiency of the cooling water that is greater than the heat dissipation requirement of the cooling oil, the heat absorption efficiency of the cooling water that satisfies the heat dissipation requirement of the cooling oil, and the heat absorption efficiency of the cooling water that does not satisfy the heat dissipation requirement of the.
In one embodiment, the step of controlling whether the extended oil passage is communicated with the circulating oil passage according to the comparison data includes: when the actual temperature value is smaller than or equal to the first temperature preset value, the expansion oil passage is controlled not to be communicated with the circulation oil passage, and the water flow speed of the heat storage water tank mechanism is controlled to be 1L/S-1.5L/S; when the actual temperature value is larger than the first temperature preset value and smaller than or equal to the second temperature preset value, the expansion oil duct is controlled to be communicated with the circulating oil duct, and the water flow speed of the heat storage water tank mechanism is controlled to be 1L/S-1.5L/S; and when the actual temperature value is greater than a second temperature preset value, controlling the expansion oil duct to be communicated with the circulating oil duct, and controlling the water flow speed of the heat storage water tank mechanism to be 2.5L/S-3L/S. In this embodiment, when the actual temperature value is less than or equal to the first temperature preset value, it indicates that the heat absorption efficiency of the cooling water to the cooling oil is greater than the heat dissipation requirement of the cooling oil, so that the extended oil passage is controlled to be communicated with the circulating oil passage, the heat exchange is only performed by using the first plate heat exchanger, and the water flow speed of the cooling water is controlled to be a low flow speed, that is, the water flow speed is 1L/S to 1.5L/S, so that the heat absorption efficiency of the cooling water is reduced, and the energy consumption is reduced on the basis of meeting the heat dissipation requirement of the cooling oil. When the actual temperature value is larger than the first temperature preset value and smaller than or equal to the second temperature preset value, the heat absorption efficiency of the cooling water to the cooling oil is shown to meet the heat dissipation requirement of the cooling oil, the extended oil duct needs to be communicated with the circulating oil duct in the state, the heat absorption efficiency of the cooling oil is increased, and the heat dissipation requirement of the cooling oil is met, and meanwhile, the actual temperature value is moderate, so that the water flow speed of the cooling water is also low, namely the water flow speed is 1L/S-1.5L/S. When the actual temperature value is larger than the second temperature preset value, the heat absorption efficiency of the cooling water to the cooling oil is not enough to meet the heat dissipation requirement of the cooling oil, so that the expansion oil duct and the circulating oil duct need to be communicated, the flow rate of the cooling water needs to be increased to 2.5L/S-3L/S, the cooling water quantity exchanging heat with the cooling oil in unit time is increased by increasing the water flow speed, and the heat absorption efficiency of the cooling oil is further increased to meet the heat dissipation requirement of the cooling oil.
In one embodiment, the hot water storage tank mechanism comprises a water tank assembly and a circulating water pipe assembly, wherein the circulating water pipe assembly is connected with the water tank assembly, and the circulating water pipe assembly is respectively connected with the first plate heat exchanger and the second plate heat exchanger. In this embodiment, first plate heat exchanger and second plate heat exchanger all are connected with the circulating water pipe assembly, and the heat of coolant oil transmits to the circulating water pipe assembly through first plate heat exchanger and second plate heat exchanger, and the circulating water pipe assembly is being carried the water after will absorbing heat to the water tank set spare in and is stored and utilize.
In one embodiment, the water tank assembly comprises a first tank body and a second tank body, the circulating water pipe assembly comprises a first circulating water pipe and a second circulating water pipe, two ends of the first circulating water pipe are respectively communicated with the water inlet and the water outlet of the first tank body, the first circulating water pipe is connected with the first plate type heat exchanger, two ends of the second circulating water pipe are respectively communicated with the water inlet and the water outlet of the second tank body, and the second circulating water pipe is connected with the second plate type heat exchanger. In this embodiment, because the water tank set spare includes first box and second box, when extension oil duct and circulation oil duct intercommunication, not only can promote heat transfer area, and then improved heat exchange efficiency because of using second plate heat exchanger, through increasing a heat exchange water tank, more coolant have been had simultaneously, reach the effect that further improves heat exchange efficiency.
In one embodiment, the hot water storage tank mechanism further comprises a tank body communicating pipeline, and two ends of the tank body communicating pipeline are respectively communicated with the first tank body and the second tank body. Because the heat transfer condition of first box and second box is unlikely the same completely, consequently the heat of first box and second box output is inequality, and in this embodiment, first box and second box accessible box communicate communicating pipe, can avoid the unequal condition of heat of first box and second box output, and then make the heat grade of first box and second box output unanimous.
In one embodiment, the water tank assembly further comprises a first temperature display and a second temperature display, the first temperature display is connected with the first tank body and used for detecting and displaying the temperature at the water inlet of the first tank body, the second temperature display is connected with the second tank body and used for detecting and displaying the temperature at the water inlet of the second tank body. Through first temperature monitor and second temperature monitor, can know the current temperature value of first box and second box, and then judge whether need switch on the box linker, make first box and second box communicate each other.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides an air compressor machine waste heat recovery device which characterized in that includes:
the air compressor comprises a shell, a circulating oil duct, an extended oil duct, a first valve and a second valve, wherein two ends of the circulating oil duct are respectively communicated with an oil inlet and an oil outlet of the shell, the circulating oil duct is provided with a first connecting part and a second connecting part, two ends of the extended oil duct are respectively connected with the first connecting part and the second connecting part, so that two ends of the extended oil duct are both communicated with the circulating oil duct, the first valve is arranged on the circulating oil duct and is positioned between the first connecting part and the second connecting part, and the second valve is arranged on the extended oil duct;
the heat exchange mechanism comprises a first plate heat exchanger and a second plate heat exchanger, the first plate heat exchanger is connected with the circulating oil duct, and the second plate heat exchanger is connected with the extended oil duct;
heat-retaining water tank set spare, heat-retaining water tank set spare includes first box, second box, first circulating pipe and second circulating pipe, first circulating pipe's both ends respectively with the water inlet and the delivery port intercommunication of first box, first circulating pipe with first plate heat exchanger connects, second circulating pipe's both ends respectively with the water inlet and the delivery port intercommunication of second box, second circulating pipe with second plate heat exchanger connects.
2. The air compressor waste heat recovery device according to claim 1, wherein the first tank further comprises a temperature measuring instrument, and the temperature measuring instrument is used for detecting and displaying the temperature at the water inlet of the first tank.
3. The air compressor waste heat recovery device according to claim 1, wherein the heat storage water tank assembly further comprises a tank communicating pipeline and a third valve, two ends of the tank communicating pipeline are respectively communicated with the first tank and the second tank, and the third valve is arranged on the tank communicating pipeline.
4. The air compressor waste heat recovery device according to claim 3, wherein the first valve, the second valve and the third valve are all solenoid valves.
5. The air compressor waste heat recovery device according to any one of claims 1 to 4, wherein the heat storage water tank assembly further comprises a first fluid pump, and the first fluid pump is arranged on the first circulating water pipe.
6. The air compressor waste heat recovery device according to any one of claims 1 to 4, wherein the heat storage water tank assembly further comprises a second fluid pump, and the second fluid pump is located on the second circulating water pipe.
7. A compressed air drying apparatus, characterized by comprising the air compressor waste heat recovery device of any one of claims 1 to 6, and further comprising:
a pre-cooler connected to the air compressor;
the water-cooling drying device comprises a water-cooling shell and a water-cooling circulating pipeline, the water-cooling shell is connected with the pre-cooler, part of the water-cooling circulating pipeline is positioned inside the water-cooling shell, and the water-cooling circulating pipeline is connected with the first box body;
and the freeze drying device is respectively connected with the water-cooling shell and the front cooler.
8. The compressed air drying apparatus according to claim 7, wherein a portion of the water-cooled circulation pipe located inside the water-cooled casing is formed in a spiral shape.
9. The compressed air drying apparatus of claim 7, wherein the water-cooled drying device further comprises a gas-liquid separator connected to the water-cooled housing.
10. The compressed air drying apparatus according to claim 7, wherein the water-cooled drying device further comprises a third fluid pump provided on the water-cooled circulation pipe.
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| CN202011280468.2A CN112377416A (en) | 2020-11-16 | 2020-11-16 | Air compressor waste heat recovery device and compressed air drying equipment |
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| CN202011280468.2A CN112377416A (en) | 2020-11-16 | 2020-11-16 | Air compressor waste heat recovery device and compressed air drying equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116877381A (en) * | 2023-09-07 | 2023-10-13 | 山西常村大成节能科技有限公司 | Air compressor with energy-saving transformation function and use method |
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Application publication date: 20210219 |