CN213841871U - Closed circulation heat exchange system for air compressor waste heat recovery - Google Patents
Closed circulation heat exchange system for air compressor waste heat recovery Download PDFInfo
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- CN213841871U CN213841871U CN202022949723.XU CN202022949723U CN213841871U CN 213841871 U CN213841871 U CN 213841871U CN 202022949723 U CN202022949723 U CN 202022949723U CN 213841871 U CN213841871 U CN 213841871U
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Abstract
The utility model discloses an air compressor machine waste heat recovery is with closed circulation heat transfer system relates to air compressor machine waste heat recovery system field. The utility model comprises an oil-water heat exchange module of a closed circulation air compressor, a water inlet pipeline, a water outlet pipeline and a water supplementing pipeline; a water replenishing electromagnetic valve is arranged on the water replenishing pipeline; the water outlet pipeline is provided with a heat exchanger, a fifth temperature sensor, an electric regulating valve, a first temperature sensor and a second temperature sensor; a circulating pump set is arranged on the water inlet pipeline, and a first pressure sensor, an exhaust valve and an expansion tank are arranged on the water inlet pipeline; and a second pressure sensor and a safety valve are sequentially arranged between the circulating pump set and the oil-water heat exchange module of the air compressor. The utility model is a closed cycle structure, which greatly improves the utilization rate of heat source; the heat exchanger adopts a detachable plate heat exchanger, the heat exchange efficiency is high, the volume is small, and the heat exchanger can be expanded by heat demand; two parallel circulating pumps are adopted, one is used and the other is standby, the intermittent operation is realized, and the service life is longer.
Description
Technical Field
The utility model belongs to air compressor machine waste heat recovery system field especially relates to an air compressor machine is closed circulation heat transfer system for waste heat recovery.
Background
The air compressor waste heat recovery is a novel efficient waste heat utilization device, cold water is heated by absorbing waste heat of the air compressor, and energy consumption is avoided. As a novel efficient waste heat utilization equipment, the utility model is mainly used for solving the problems of staff life, industrial hot water and the like, because the enterprise uses the screw air compressor machine at present, the utility of the screw air compressor machine is only increased, the energy-saving consumption of the enterprise is realized, and a large amount of cost is saved.
The existing air compressor waste heat recovery system is usually composed of air compressor lubricating oil and client water through once heat exchange. A medium to be heated (generally, the medium to be heated refers to process water, domestic tap water or other process water, and the process water is taken as an example here) enters a water tank through a water supplementing electromagnetic valve, the water tank detects that the water level is higher than the starting lower limit of a circulating pump, a heat conduction circulating pump works, the process water is pressurized by the circulating pump and then is sent to an air compressor oil-water heat exchange module for heating, the heated medium returns to a heat preservation water tank, and then a cycle is finished. When the temperature of the system reaches a set value, the circulating pump is in standby, and the circulating pump is automatically awakened when the temperature is lower than a lower limit value. In the existing system, because of the problems of lubricating oil corrosion of the air compressor and the like, the heat exchanger usually adopts a brazed heat exchanger, and has the characteristics of high heat exchange efficiency and small volume. However, the applied side water quality is not good, heat exchange and scaling are easy to occur in the morning, and the cleaning is only carried out by chemical soaking, back washing and other modes, so that the cleaning difficulty is high, and the efficiency is low. In the existing system, the working pressure of the air compressor is higher than the circulating pressure, if the heat exchanger leaks, the lubricating oil can enter an application side water system, and the problems of water quality pollution and the like are caused. The heat exchange area of the brazed plate heat exchanger cannot be changed after being determined, and the heat exchange cannot be satisfied after the side flow is increased. Therefore, the closed type circulating heat exchange system for recovering the waste heat of the air compressor has important significance.
SUMMERY OF THE UTILITY MODEL
The utility model provides an air compressor machine waste heat recovery is with closed circulation heat transfer system has solved above problem.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
the utility model discloses a closed circulation heat exchange system for air compressor waste heat recovery, which is used for carrying out heat energy recovery and utilization on a water-cooling air compressor oil-water heat exchange module, and comprises a water inlet pipeline connected with the water inlet end of the air compressor oil-water heat exchange module, a water outlet pipeline connected with the water outlet end of the air compressor oil-water heat exchange module and a water supplementing pipeline connected with the starting end of the water inlet pipeline and the tail end of the water outlet pipeline, so that the water inlet pipeline, the water outlet pipeline and the air compressor oil-water heat exchange module form closed circulation;
a water replenishing electromagnetic valve is arranged on the water replenishing pipeline;
a heat exchanger is arranged on the water outlet pipeline; a fifth temperature sensor, an electric regulating valve and a first temperature sensor are sequentially arranged on the water outlet pipeline between the air compressor oil-water heat exchange module and the heat exchanger; a second temperature sensor is arranged on the water outlet pipeline between the heat exchanger and the water replenishing electromagnetic valve; two application end water supply pipelines are arranged on the heat exchanger in parallel; a third temperature sensor and a third pressure sensor are arranged on one application end water supply pipeline, and a fourth temperature sensor and a fourth pressure sensor are arranged on the other application end water supply pipeline;
two rows of circulating pump sets arranged in parallel are arranged on the water inlet pipeline, and each circulating pump set comprises a first circulating pump and a second circulating pump which are arranged in parallel; a first pressure sensor, an exhaust valve and an expansion tank are sequentially arranged on the water inlet pipeline between the circulating pump set and the water replenishing electromagnetic valve; and a second pressure sensor and a safety valve are sequentially arranged between the circulating pump set and the oil-water heat exchange module of the air compressor.
Furthermore, the end part of the water replenishing pipeline is connected with a water replenishing water source, and the water replenishing water source adopts softened water or purified water.
Furthermore, the heat exchanger adopts a detachable plate heat exchanger.
Compared with the prior art, the utility model following beneficial effect including:
1. the utility model discloses a closed circulation heat exchange system for recovering waste heat of an air compressor, which enables a water inlet pipeline, a water outlet pipeline and an oil-water heat exchange module of the air compressor to form closed circulation by matching various sensors and valves; circulating water is pressurized by a circulating pump and then enters an oil-water heat exchange module of an air compressor; the water outlet temperature of the oil-water heat exchange module of the air compressor is regulated by a regulating valve; the temperature sensor T0 detects a temperature higher than the system set constant temperature; the high-temperature circulating water regulated and controlled by the regulating valve enters the heat exchanger to exchange heat with the application side heat exchange circulating water, the heat of the high-temperature circulating water is absorbed by the application side circulating water, and the high-temperature circulating water is pressurized by the circulating pump WP1/WP2 and then returns to the oil-water heat exchange module of the air compressor to be heated, so that the circulation process is realized, and the heat source utilization rate is greatly improved.
2. The utility model discloses a heat exchanger adopts removable plate heat exchanger, and heat exchange efficiency is high, small, and convenient dismantlement is washd, and the heat exchanger can be with the thermal demand dilatation, only need increase corresponding slab quantity can, be suitable for different operating modes.
3. The utility model discloses a two parallel circulating pumps, one is used and is equipped with, and the timing wheel changes work, and trouble automatic switch-over, intermittent type nature work, life are longer.
Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a closed circulation heat exchange system for recovering waste heat of an air compressor of the present invention;
FIG. 2 is a schematic diagram of a waste heat recovery system of a conventional air compressor;
in the drawings, the components represented by the respective reference numerals are listed below:
t1-first temperature sensor, T2-second temperature sensor, T3-third temperature sensor, T4-fourth temperature sensor, T0-fifth temperature sensor, P1-first pressure sensor, P2-second pressure sensor, P3-third pressure sensor, P4-fourth pressure sensor, SV-water replenishing electromagnetic valve, AT-exhaust valve, WP 1-first circulating pump, WP 2-second circulating pump, SA-safety valve, RV 1-electric regulating valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "inlet end", "outlet end", "side by side", "parallel", "between", etc. indicate positional or positional relationships, merely for convenience of description and simplicity of description, and do not indicate or imply that the indicated component or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
As shown in fig. 2, the existing air compressor waste heat recovery system is usually composed of air compressor lubricating oil and customer water through one-time heat exchange. A medium to be heated (generally, the medium to be heated refers to process water, domestic tap water or other process water, and the process water is taken as an example here) enters a water tank through a water supplementing electromagnetic valve, the water tank detects that the water level is higher than the starting lower limit of a circulating pump, a heat conduction circulating pump works, the process water is pressurized by the circulating pump and then is sent to an air compressor oil-water heat exchange module for heating, the heated medium returns to a heat preservation water tank, and then a cycle is finished. When the temperature of the system reaches a set value, the circulating pump is in standby, and the circulating pump is automatically awakened when the temperature is lower than a lower limit value. In the existing system, because of the problems of lubricating oil corrosion of the air compressor and the like, the heat exchanger usually adopts a brazed heat exchanger, and has the characteristics of high heat exchange efficiency and small volume. However, the applied side water quality is not good, heat exchange and scaling are easy to occur in the morning, and the cleaning is only carried out by chemical soaking, back washing and other modes, so that the cleaning difficulty is high, and the efficiency is low. In the existing system, the working pressure of the air compressor is higher than the circulating pressure, if the heat exchanger leaks, the lubricating oil can enter an application side water system, and the problems of water quality pollution and the like are caused. The heat exchange area of the brazed plate heat exchanger cannot be changed after being determined, and the heat exchange cannot be satisfied after the side flow is increased.
Therefore, the technical scheme is provided for solving the problems;
please refer to fig. 1, the closed cycle heat exchange system for recovering waste heat of an air compressor of the present invention is used for recovering and utilizing heat energy of an oil-water heat exchange module of the air compressor, and comprises a water inlet pipeline connected with a water inlet end of the oil-water heat exchange module of the air compressor, a water outlet pipeline connected with a water outlet end of the oil-water heat exchange module of the air compressor, and a water replenishing pipeline connected with an initial end of the water inlet pipeline and a tail end of the water outlet pipeline, so that the water inlet pipeline, the water outlet pipeline and the oil-water heat exchange module of the air compressor form a closed cycle;
a water replenishing electromagnetic valve SV is arranged on the water replenishing pipeline;
a heat exchanger HC is arranged on the water outlet pipeline; a fifth temperature sensor T0, an electric regulating valve RV1 and a first temperature sensor T1 are sequentially arranged on the water outlet pipeline between the air compressor oil-water heat exchange module and the heat exchanger HC; a second temperature sensor T2 is arranged on the water outlet pipeline between the heat exchanger HC and the water replenishing solenoid valve SV; two application end water supply pipelines are arranged on the heat exchanger HC in parallel; a third temperature sensor T3 and a third pressure sensor P3 are arranged on one application end water supply pipeline, and a fourth temperature sensor T4 and a fourth pressure sensor P4 are arranged on the other application end water supply pipeline;
two rows of circulating pump sets which are arranged in parallel are arranged on the water inlet pipeline, and each circulating pump set comprises a first circulating pump WP1 and a second circulating pump WP2 which are arranged in parallel; a first pressure sensor P1, an exhaust valve AT and an expansion tank AAV are sequentially arranged on the water inlet pipeline between the circulating pump set and the water replenishing solenoid valve SV; and a second pressure sensor P2 and a safety valve SA are sequentially arranged between the circulating pump group and the air compressor oil-water heat exchange module.
Collecting water supplement by a pressure water supplement valve solenoid valve SV according to a pressure sensor P1 to control system water supplement; the exhaust valve AT is used for exhausting air in the system; the first circulating pump WP1 and the second circulating pump WP2 are used for providing power for water circulation of the system, wherein one of the first circulating pump WP1 and the second circulating pump WP2 is used as a spare; judging the working performance of the circulating pump according to the first pressure sensor P1 and the second pressure sensor P2; the electric regulating valve RV1 feeds back and regulates the opening according to a fifth temperature sensor T0, so that the outlet water temperature of the oil-water heat exchange module of the air compressor is controlled;
the heat exchanger HC is used for exchanging heat between high-temperature outlet water of the oil-water heat exchange module of the air compressor and water used by a client application end, and the heat exchange performance of the heat exchanger HC can be judged through difference values of T1, T2, T3 and T4; the blockage condition of the application side of the heat exchanger can be judged through the reading difference values of the pressure sensors P3 and P4; the safety valve SA is used for automatically releasing pressure when the system pressure exceeds a limit value; the pressure of the circulating water is increased along with the temperature rise, and the expansion tank AAV is arranged at the water inlet of the circulating pump WP1/WP2 to absorb the pressure and keep the operating pressure of the closed system stable.
Wherein, the end part of the water replenishing pipeline is connected with a water replenishing source, and the water replenishing source adopts softened water or purified water.
Wherein, the heat exchanger HC adopts a detachable plate heat exchanger.
Has the advantages that:
1. the utility model discloses a closed circulation heat exchange system for recovering waste heat of an air compressor, which enables a water inlet pipeline, a water outlet pipeline and an oil-water heat exchange module of the air compressor to form closed circulation by matching various sensors and valves; circulating water is pressurized by a circulating pump and then enters an oil-water heat exchange module of an air compressor; the water outlet temperature of the oil-water heat exchange module of the air compressor is regulated by a regulating valve; the temperature sensor T0 detects a temperature higher than the system set constant temperature; the high-temperature circulating water regulated and controlled by the regulating valve enters the heat exchanger to exchange heat with the application side heat exchange circulating water, the heat of the high-temperature circulating water is absorbed by the application side circulating water, and the high-temperature circulating water is pressurized by the circulating pump WP1/WP2 and then returns to the oil-water heat exchange module of the air compressor to be heated, so that the circulation process is realized, and the heat source utilization rate is greatly improved.
2. The utility model discloses a heat exchanger adopts removable plate heat exchanger, and heat exchange efficiency is high, small, and convenient dismantlement is washd, and the heat exchanger can be with the thermal demand dilatation, only need increase corresponding slab quantity can, be suitable for different operating modes.
3. The utility model discloses a two parallel circulating pumps, one is used and is equipped with, and the timing wheel changes work, and trouble automatic switch-over, intermittent type nature work, life are longer.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (3)
1. A closed circulation heat exchange system for recovering waste heat of an air compressor is used for recycling heat energy of an oil-injected screw compressor and is characterized by comprising a water inlet pipeline connected with the water inlet end of an oil-water heat exchange module of the air compressor, a water outlet pipeline connected with the water outlet end of the oil-water heat exchange module of the air compressor and a water supplementing pipeline connected with the starting end of the water inlet pipeline and the tail end of the water outlet pipeline, so that the water inlet pipeline, the water outlet pipeline and the oil-water heat exchange module of the air compressor form closed circulation;
a water replenishing electromagnetic valve (SV) is arranged on the water replenishing pipeline;
a heat exchanger (HC) is arranged on the water outlet pipeline; a fifth temperature sensor (T0), an electric regulating valve (RV1) and a first temperature sensor (T1) are sequentially arranged on the water outlet pipeline between the air compressor oil-water heat exchange module and the heat exchanger (HC); a second temperature sensor (T2) is arranged on the water outlet pipeline between the heat exchanger (HC) and the water replenishing Solenoid Valve (SV); two application end water supply pipelines are arranged on the heat exchanger (HC) in parallel; a third temperature sensor (T3) and a third pressure sensor (P3) are arranged on one application end water supply pipeline, and a fourth temperature sensor (T4) and a fourth pressure sensor (P4) are arranged on the other application end water supply pipeline;
two rows of circulating pump groups arranged in parallel are arranged on the water inlet pipeline, and each circulating pump group comprises a first circulating pump (WP1) and a second circulating pump (WP2) which are arranged in parallel; a first pressure sensor (P1), an exhaust valve (AT) and an expansion tank (AAV) are sequentially arranged on the water inlet pipeline between the circulating pump set and the water replenishing Solenoid Valve (SV); and a second pressure sensor (P2) and a safety valve (SA) are sequentially arranged between the circulating pump group and the air compressor oil-water heat exchange module.
2. The closed type circulation heat exchange system for recycling the waste heat of the air compressor as claimed in claim 1, wherein the end of the water replenishing pipeline is connected with a water replenishing source, and the water replenishing source adopts softened water or purified water.
3. The closed type circulating heat exchange system for recovering the waste heat of the air compressor as recited in claim 1, wherein the heat exchanger (HC) is a detachable plate heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022949723.XU CN213841871U (en) | 2020-12-08 | 2020-12-08 | Closed circulation heat exchange system for air compressor waste heat recovery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022949723.XU CN213841871U (en) | 2020-12-08 | 2020-12-08 | Closed circulation heat exchange system for air compressor waste heat recovery |
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| CN213841871U true CN213841871U (en) | 2021-07-30 |
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| CN202022949723.XU Active CN213841871U (en) | 2020-12-08 | 2020-12-08 | Closed circulation heat exchange system for air compressor waste heat recovery |
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