CN210859222U - Energy recovery system of nuclear power air compressor - Google Patents
Energy recovery system of nuclear power air compressor Download PDFInfo
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- CN210859222U CN210859222U CN201921116379.7U CN201921116379U CN210859222U CN 210859222 U CN210859222 U CN 210859222U CN 201921116379 U CN201921116379 U CN 201921116379U CN 210859222 U CN210859222 U CN 210859222U
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Abstract
The utility model discloses a nuclear power air compressor machine energy recuperation system, it includes: the air compressor is provided with a first heat exchanger; and the air compressor energy recovery device comprises a second heat exchanger and a circulating pump which are connected in a closed mode through pipelines, the second heat exchanger is provided with a user water circulation loop connected with a terminal user, and water after heat exchange of the first heat exchanger is supplied to the terminal user after heat exchange of the second heat exchanger. Compared with the prior art, the utility model discloses nuclear power air compressor machine energy recuperation system has kept original cooling system, can realize waste heat utilization under the prerequisite that satisfies the normal work temperature of compressor and assurance system steady operation, can not only solve the cooling problem of air compressor machine, can prolong cooler life moreover, has good economy and social.
Description
Technical Field
The utility model belongs to the technical field of the nuclear power, more specifically say, the utility model relates to a nuclear power air compressor machine energy recuperation system.
Background
Air compressors have been widely used in nuclear power plants as a main power plant. At present, although the specifications, brands and models of nuclear power air compressors are numerous, the principles are basically the same, and oil-free screw air compressors are adopted.
In the working process of the nuclear power air compressor, a small part of input electric energy is converted into compressed air potential energy and thermal radiation energy, a small part of electric energy is consumed as mechanical transmission, and other most electric energy is converted into heat energy of compressed air.
According to hydrodynamics, the conversion of molecular potential energy of air during compression will generate a large amount of heat energy. If the heat of the air compressor is not discharged, the normal work of the air compressor and the quality of the compressed air are influenced. If the heat of the air compressor is taken away by cooling water in an oil cooler, an intercooler and an aftercooler in the system, the heat is lost wastefully, a large amount of heat energy is wasted, the greenhouse effect of the atmosphere is aggravated, and the heat pollution is caused. This "excess" heat is let down into the air, not only affecting the environment, but also creating "thermal" pollution.
The existing air compressor energy recovery mainly aims at oil-injection lubrication screw air compressors, mainly aims at the factory and mine enterprises, and most commonly prepares hot water for bathing, living hot water and the like. For example, in industries with relatively poor working environments such as casting, metallurgy and mineral mining, the recovered waste heat of the air compressor can be used for heating tap water to 50-60 ℃ for supplying heat to factories or bathing workers. The heat supply of the boiler is independently configured for the factory and mine enterprises, the boiler can be preheated in advance, or the waste heat of the air compressor is independently used for recovering and directly supplying heat.
So far, no relevant case suitable for energy recovery of oil-free screw air compressors of nuclear power plants exists. In view of the above, it is actually necessary to provide an energy recovery system for a nuclear power air compressor, which can effectively recover the energy of the air compressor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the defects of the prior art are overcome, and the energy recovery system of the nuclear power air compressor capable of effectively recovering the energy of the air compressor is provided.
In order to realize the utility model discloses the purpose, the utility model provides a nuclear power air compressor machine energy recuperation system, it includes:
the air compressor is provided with a first heat exchanger; and
the air compressor energy recovery device comprises a second heat exchanger and a circulating pump which are connected in a closed mode through pipelines, wherein the second heat exchanger is provided with a user water circulation loop connected with a terminal user, and water after heat exchange of the first heat exchanger is supplied to the terminal user after heat exchange of the second heat exchanger.
As an improvement of the nuclear power air compressor energy recovery system, an electrically operated valve is arranged between the outlet of the first heat exchanger and the inlet of the second heat exchanger.
As an improvement of the nuclear power air compressor energy recovery system, a heat exchange pump is arranged on the user water circulation loop.
As an improvement of the nuclear power air compressor energy recovery system, an automatic air release valve is arranged between the second heat exchanger and the circulating pump.
As an improvement of the nuclear power air compressor energy recovery system, an automatic water replenishing valve and a water drain valve are arranged between the second heat exchanger and the circulating pump.
As the utility model discloses nuclear power air compressor machine energy recuperation system's an improvement, it is equipped with the pressure expansion jar to close on circulating pump department between circulating pump and the second heat exchanger for liquid level in the monitoring system.
As the utility model discloses nuclear power air compressor machine energy recuperation system's improvement, closing on circulating pump department between circulating pump and the second heat exchanger and being equipped with the relief valve, the relief valve is automatic to be opened when system's internal pressure surpasses rated pressure, and preliminary set pressure is 0.8 Mpa.
As an improvement of the nuclear power air compressor energy recovery system, the circulating pump is two circulating pumps of redundant setting.
As an improvement of the nuclear power air compressor energy recovery system, the first heat exchanger is an external plate heat exchanger which is connected in the internal water path circulation of the air compressor in series.
As an improvement of the nuclear power air compressor energy recovery system, a proportional control valve for adjusting the water outlet temperature of the air compressor is arranged between the circulating pump and the air compressor.
Compared with the prior art, the utility model discloses nuclear power air compressor machine energy recuperation system has following advantage:
firstly, the external energy recovery device is simple to operate, small in size, light in weight, reasonable in structure and low in purchasing and installing cost, realizes recovery of most heat energy loss of the compressor, saves production and operation cost of the nuclear power station, and avoids pollution to the environment.
Secondly, from the perspective of safety quality, the original cooling system is reserved, the safety factor is improved, waste heat utilization can be realized on the premise of meeting the normal working water temperature of the compressor and ensuring the stable operation of the system, the cooling problem of the air compressor unit can be solved, the service life of the cooler can be prolonged, and good economic and social benefits are achieved.
Drawings
Following combine the attached drawing and detailed implementation, right the utility model discloses nuclear power air compressor machine energy recuperation system and technological effect carry out the detailed description, wherein:
FIG. 1 is the utility model discloses nuclear power air compressor machine energy recuperation system's schematic diagram.
Detailed Description
In order to make the objects, technical solutions and advantageous technical effects of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration only and not by way of limitation.
Please refer to fig. 1, the utility model discloses nuclear power air compressor energy recuperation system includes:
an air compressor 10 provided with a first heat exchanger (not shown); and
the air compressor energy recovery device 20 comprises a second heat exchanger 200 and a circulating pump 202 which are connected in a closed mode through pipelines, wherein the second heat exchanger 200 is provided with a user water circulation loop connected with a terminal user 204, and water after heat exchange of the first heat exchanger is supplied to the terminal user 204 after heat exchange of the second heat exchanger 200.
In the nuclear power air compressor energy recuperation system of drawing in the figure, a machine exterior plate heat exchanger is gone into in the circulation of the inside water route of air compressor 10 in series, and inside water carries out the heat transfer with the soft water that comes from the softened water tank earlier, has both reduced inside water temperature, has improved outside water temperature again, then gets into the water cooler.
According to the utility model discloses an embodiment of nuclear power air compressor machine energy recuperation system is equipped with motorised valve 206 between first heat exchanger export and the second heat exchanger 200 entry.
According to the utility model discloses an embodiment of nuclear power air compressor machine energy recuperation system, be equipped with heat exchange pump 208 on the user hydrologic cycle return circuit.
According to the utility model discloses an embodiment of nuclear power air compressor machine energy recuperation system is equipped with automatic bleed valve 210 between second heat exchanger 200 and the circulating pump 202. The automatic air release valve 210 is used for automatically removing air in the primary circulation system, improving the thermal efficiency of the system, and avoiding the gasification corrosion inside the system, the formation of local air pockets, the cavitation of the circulation pump and the noise in the pipeline.
According to the utility model discloses an embodiment of nuclear power air compressor machine energy recuperation system is equipped with automatic water supply valve 212 and waterproof valve 214 between second heat exchanger 200 and the circulating pump 202. The automatic water replenishing valve 212 automatically replenishes water according to the set parameters of the control system, maintains the pressure stability of primary circulating water, and ensures the reliable operation of the system.
According to the utility model discloses an embodiment of nuclear power air compressor machine energy recuperation system closes on circulating pump 202 department between circulating pump 202 and the second heat exchanger 200 and is equipped with pressure expansion tank 216. The pressure expansion tank 216 is used for absorbing the water volume expanded by heating in the closed circulating water system, and plays a role in balancing the water volume and the pressure, so that frequent opening of the safety valve 218 and frequent water replenishing of automatic water replenishing are avoided, and the liquid level of the system is monitored.
According to the utility model discloses an embodiment of nuclear power air compressor machine energy recuperation system closes on circulating pump 202 between circulating pump 202 and the second heat exchanger 200 and locates to be equipped with relief valve 218, and relief valve 218 is automatic to be opened when system's internal pressure surpasss rated pressure, and in the embodiment of the figure, preliminary set pressure is 0.8 Mpa.
According to the utility model discloses an embodiment of nuclear power air compressor machine energy recuperation system, circulating pump 202 is two energy recuperation circulating pumps 202 of redundant setting, adopts one to open one and is equipped with the design. When a circulating pump breaks down, the standby circulating pump is started, and water can be directly dismounted and maintained through electric valve switching under the operation condition of the equipment without influencing the use of the air compressor 10 and the heat recovery system.
According to the utility model discloses an embodiment of nuclear power air compressor machine energy recuperation system is equipped with the proportional control valve 220 of adjusting air compressor machine play water temperature between circulating pump 202 and the air compressor machine 10. The proportional control valve 220 is used for automatically adjusting the temperature of the primary circulating water entering and exiting the air compressor 10, and ensures that the water temperature of the heat recovery system is stable. When the heating temperature of the system changes, the input water temperature of the compressor is slightly adjusted by the system, and further the output temperature is slightly changed. Due to the protection of the proportional control valve 220, the small fluctuation will be maintained in a temperature range, and the whole system is still in an equilibrium state. Thus, reliable operation of the compressor is still ensured during operation of the system.
The following combines fig. 1, the detailed description the utility model discloses nuclear power air compressor machine energy recuperation system's theory of operation:
the working state of each valve when the energy recovery device operates is as follows: and starting the energy recovery device on the controller, opening the electromagnetic valve to inject 7Bar soft water into the energy recovery device, opening the exhaust valve to exhaust in the water injection process, and closing the automatic water replenishing valve 212 after the pressure expansion tank 216 has the lowest liquid level, so that the water injection is finished. Starting the circulating pump 202(P1, P2 are mutually standby), when the controller monitors that the temperature in the system is lower than 70 ℃, the opening of the proportional control valve 220 is 100%, and circulating water circulates in the energy recovery device; when the controller monitors that the temperature in the system is higher than 70 ℃ and the temperature is within the range of 70-80 ℃, the opening of the proportional control valve 220 is adjusted to 100% -0%, so that the heat which cannot be recovered by the energy recovery device is taken away by the original external SRI cooling water, and the high-temperature shutdown of the unit is avoided. When the end user 204 stops using the hot water, the specific row regulating valve 220 automatically regulates the opening degree to the original SRI cooling system along with the increase of the water temperature in the energy recovery device to a limited temperature, so that the original cooling system is put into use, and the air compressor 10 can be reliably cooled.
The working state of each valve when the energy recovery device is stopped: and (3) stopping the energy recovery device on the controller, stopping the circulating pump 202(P1 or P2), switching the comparison regulating valve 220 to the original SRI cooling system, closing the electric valve, and automatically replenishing water by the automatic water replenishing valve 212 according to the liquid level of the pressure expansion tank 216.
It is right above combining the utility model discloses the detailed description of embodiment can see out, for prior art, the utility model discloses nuclear power air compressor machine energy recuperation system has following advantage:
firstly, the external energy recovery device is simple to operate, small in size, light in weight, reasonable in structure and low in purchasing and installing cost, realizes recovery of most heat energy loss of the compressor, saves production and operation cost of the nuclear power station, and avoids pollution to the environment.
And secondly, from the perspective of safety quality, the original cooling system is reserved, the safety factor is improved, waste heat utilization can be realized on the premise of meeting the normal working water temperature of the compressor and ensuring the stable operation of the system, the cooling problem of the air compressor unit can be solved, the service life of the cooler can be prolonged, and good economic and social benefits are achieved.
According to the above principle, the present invention can also make appropriate changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. The utility model provides a nuclear power air compressor machine energy recuperation system which characterized in that includes:
the air compressor is provided with a first heat exchanger; and
the air compressor energy recovery device comprises a second heat exchanger and a circulating pump which are connected in a closed mode through pipelines, wherein the second heat exchanger is provided with a user water circulation loop connected with a terminal user, and water after heat exchange of the first heat exchanger is supplied to the terminal user after heat exchange of the second heat exchanger.
2. The energy recovery system of the nuclear power air compressor of claim 1, characterized in that: an electric valve is arranged between the outlet of the first heat exchanger and the inlet of the second heat exchanger.
3. The energy recovery system of the nuclear power air compressor of claim 1, characterized in that: and a heat exchange pump is arranged on the user water circulation loop.
4. The energy recovery system of the nuclear power air compressor of claim 1, characterized in that: and an automatic air release valve is arranged between the second heat exchanger and the circulating pump.
5. The energy recovery system of the nuclear power air compressor of claim 1, characterized in that: and an automatic water replenishing valve and a water drain valve are arranged between the second heat exchanger and the circulating pump.
6. The energy recovery system of the nuclear power air compressor of claim 1, characterized in that: and a pressure expansion tank is arranged between the circulating pump and the second heat exchanger and close to the circulating pump and used for monitoring the liquid level in the system.
7. The energy recovery system of the nuclear power air compressor of claim 1, characterized in that: a safety valve is arranged between the circulating pump and the second heat exchanger and close to the circulating pump, the safety valve is automatically opened when the pressure in the system exceeds the rated pressure, and the primary set pressure is 0.8 Mpa.
8. The energy recovery system of the nuclear power air compressor of claim 1, characterized in that: the circulating pumps are two circulating pumps which are arranged redundantly.
9. The energy recovery system of the nuclear power air compressor of claim 1, characterized in that: the first heat exchanger is an external plate type heat exchanger which is connected in series in the internal waterway circulation of the air compressor.
10. The energy recovery system of the nuclear power air compressor of claim 1, characterized in that: and a proportion regulating valve for regulating the temperature of the water outlet of the air compressor is arranged between the circulating pump and the air compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921116379.7U CN210859222U (en) | 2019-07-16 | 2019-07-16 | Energy recovery system of nuclear power air compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921116379.7U CN210859222U (en) | 2019-07-16 | 2019-07-16 | Energy recovery system of nuclear power air compressor |
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| CN210859222U true CN210859222U (en) | 2020-06-26 |
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| CN201921116379.7U Active CN210859222U (en) | 2019-07-16 | 2019-07-16 | Energy recovery system of nuclear power air compressor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113757768A (en) * | 2021-09-16 | 2021-12-07 | 中国北方发动机研究所(天津) | Box type high-temperature tail gas waste heat heating device |
| CN114017294A (en) * | 2021-10-29 | 2022-02-08 | 山东核电有限公司 | Compressed air cooling system and method for nuclear power plant instrument |
-
2019
- 2019-07-16 CN CN201921116379.7U patent/CN210859222U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113757768A (en) * | 2021-09-16 | 2021-12-07 | 中国北方发动机研究所(天津) | Box type high-temperature tail gas waste heat heating device |
| CN114017294A (en) * | 2021-10-29 | 2022-02-08 | 山东核电有限公司 | Compressed air cooling system and method for nuclear power plant instrument |
| CN114017294B (en) * | 2021-10-29 | 2024-03-26 | 山东核电有限公司 | Compressed air cooling system and method for nuclear power plant instrument |
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