CN216589012U - Cooling system of air compressor of nuclear power plant - Google Patents
Cooling system of air compressor of nuclear power plant Download PDFInfo
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- CN216589012U CN216589012U CN202122608305.9U CN202122608305U CN216589012U CN 216589012 U CN216589012 U CN 216589012U CN 202122608305 U CN202122608305 U CN 202122608305U CN 216589012 U CN216589012 U CN 216589012U
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Abstract
The utility model provides a cooling system of an air compressor in a nuclear power plant, which comprises at least one air compressor, wherein a cooling inlet of the air compressor is connected with a main cooling pipeline from an equipment cooling water system, and a cooling inlet of the air compressor is connected with an auxiliary cooling pipeline from a fire fighting system; a cooling water pump is arranged on the main cooling pipeline, and a front check valve is arranged between the cooling water pump and the air compressor; an auxiliary front isolation valve is arranged on the auxiliary cooling pipeline; a flow meter is arranged at a cooling outlet of the air compressor, and a heat exchanger is arranged between an outlet of the flow meter and an inlet of the cooling water pump; the cooling system of the air compressor of the nuclear power plant further comprises a control unit, wherein the control unit is connected with the flow meter through a monitoring line and is connected with the front auxiliary isolation valve through a command line. The utility model can cool the fire-fighting water stored in the fire-fighting system as the air compressor by switching the control unit, thereby effectively improving the reliability of the air compressor of the nuclear power plant.
Description
Technical Field
The utility model belongs to the technical field of nuclear power plants, relates to the technical field of air compressors of nuclear power plants, and particularly relates to a cooling system of the air compressors of the nuclear power plants.
Background
With the development of nuclear power technology, nuclear power plants are classified into active nuclear power plants and passive nuclear power plants according to whether safety facilities are driven by external inputs such as triggering, mechanical motion or power sources. At present, the passive nuclear power plant refers to a nuclear power plant adopting technologies such as AP1000, CAP1400 and the like. The passive nuclear power plant is provided with an instrument air compression system which provides compressed air for various non-safety related or safety related pneumatic valves so as to support the normal operation, starting and shutdown of the nuclear power plant. Valves, which are important for safe shutdown and accident mitigation, are designed to fail safe upon loss of compressed air. As shown in fig. 1, the instrument air compression system includes two air compressor series, the first air compressor series includes a first air compressor 5 and a first air storage tank 12, the second air compressor series includes a second air compressor 9 and a second air storage tank 13, and when any one of the air compressor series is started in the actual use process, air for the air-operated valve 18 can be continuously supplied with air for the air-operated valve with 100% capacity. If the first air compressor 5 and the second air compressor 9 both fail and cannot work, the compressed air stored in the first air storage tank 12 and the second air storage tank 13 can meet the requirement of the pneumatic valve air of the nuclear power plant for at least 4 minutes.
Meanwhile, the first air compressor 5 and the second air compressor 9 of the instrument air compression system emit a large amount of heat during working, the generated heat is taken away by a device cooling water system (CCS), and the device cooling water system comprises a heat exchanger 2, a cooling water pump 3, a first front isolation valve 4, a first rear isolation valve 6, a first flowmeter 7, a second front isolation valve 8, a second rear isolation valve 10 and a second flowmeter 11. The equipment cooling water system transfers heat to a Service Water System (SWS) through a heat exchanger 2, and particularly the service water system takes seawater from a circulating water pump room through a circulating water pump 1, and the seawater flows through the heat exchanger 2 to absorb heat and then is discharged to the sea.
It can be seen that the pneumatic valve 18 can work normally on the premise that the plant water system, the equipment cooling water system and the instrument air compression system can all operate normally, and although the systems consider redundancy to improve reliability, the threat of loss of compressed air due to poor cooling effect of the instrument air compression system still exists. For example, the problems that the filter screen of the service water system is blocked when the macrobrachium nipponensis floods in summer, the service water system is stopped due to the abnormal vibration of the circulating water pump 1, and the sufficient cooling water cannot be provided for the air compressor due to the fault of the equipment cooling water system are solved. According to the safety design of the nuclear power plant, once the instrument air compression system fails to provide enough compressed air, a plurality of safety-related pneumatic valves 18 can act due to the loss of the compressed air, a series of safety systems or devices designed by the nuclear power plant can act and enter a state of accident handling or relieving, for example, a reactor core water supply tank (CMT) outlet isolation valve is opened, and low-temperature boron-containing water is injected into a reactor core; the passive residual heat removal heat exchanger (PRHR HX) outlet isolation valve is opened, and the passive residual heat removal system is automatically put into operation; the passive containment cooling system (PCS) outlet isolation valve is opened, and the PCS is automatically put into operation; the main water supply isolation valve and the starting water supply isolation valve are automatically closed, and the water supply of the steam generator is cut off; part of the containment isolation valve will close.
Different from the conditions of normal power failure and the like, due to the fact that the cooling effect is poor and the pressure air system for the instrument breaks down, an operator can intervene and solve the problem completely, the safety-related pneumatic valve is required to be prevented from being in a failure safety state, and the nuclear power plant is prevented from entering an accident handling or relieving state due to the fact that a plurality of special safety facilities are started. Therefore, the storage capacity of the air storage tank in the instrument air compression system is increased, and the air supply time (more than 4 minutes) after the instrument air compression system fails is prolonged, but the method has limited prolonging time, cannot guarantee the time required by operator intervention and problem solving, can delay the starting of a plurality of specially-designed safety facilities under the conditions of normal power failure and the like of the instrument air compression system, further delays the nuclear power plant from entering an accident handling or relieving state, and is not beneficial to the safety of the nuclear power plant. Therefore, simply increasing the storage capacity of the air storage tank in the instrument air compression system is not an ideal solution.
The fire extinguishing system is one of the basic systems required by normal operation of a nuclear power plant, and as shown in fig. 1, the fire extinguishing system comprises a main fire fighting pipe network and an auxiliary fire fighting pipe network, wherein the main fire fighting pipe network comprises an electric fire pump 14 and a first fire fighting water tank 15, and the auxiliary fire fighting pipe network comprises a diesel fire pump 16 and a second fire fighting water tank 17. The electric fire pump 14 is driven by alternating current as a main fire pump, and the diesel fire pump 16 is driven by a diesel engine as an auxiliary fire pump. The water storage capacity of the two fire water tanks is huge, and the second fire water tank 17 under the control of the diesel fire pump 16 can be maintained for at least 8 hours of service time.
Therefore, the utility model provides a novel cooling system of the air compressor of the nuclear power plant, which leads the fire-fighting water stored in the fire-fighting system to be used as a standby cooling water source of the instrument air compression system, and effectively improves the reliability of the air compressor of the nuclear power plant.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides a cooling system of an air compressor of a nuclear power plant, which comprises at least one air compressor, wherein a main cooling pipeline from an equipment cooling water system is used as a basis, and an auxiliary cooling pipeline from a fire fighting system is further used as a standby, so that when the cooling effect of the air compressor is poor due to the failure of the equipment cooling water system, fire fighting water stored in a fire fighting system is switched to be used as the air compressor for cooling through a control unit, and the reliability of the air compressor of the nuclear power plant is effectively improved.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model aims to provide a cooling system of an air compressor of a nuclear power plant, which comprises at least one air compressor, wherein a cooling inlet of the air compressor is connected with a main cooling pipeline from an equipment cooling water system, and a cooling inlet of the air compressor is connected with an auxiliary cooling pipeline from a fire fighting system; a cooling water pump is arranged on the main cooling pipeline, and a front check valve is arranged between the cooling water pump and the air compressor; a secondary front isolation valve is arranged on the secondary cooling pipeline; a flow meter is arranged at a cooling outlet of the air compressor, and a heat exchanger is arranged between an outlet of the flow meter and an inlet of the cooling water pump;
the cooling system of the air compressor of the nuclear power plant further comprises a control unit, wherein the control unit is connected with the flow meter through a monitoring line, and the control unit is connected with the front auxiliary isolation valve through a command line.
The cooling system of the air compressor of the nuclear power plant comprises at least one air compressor, a main cooling pipeline from an equipment cooling water system is used as a foundation, a secondary cooling pipeline from a fire fighting system is further used as a standby, and when the cooling effect of the air compressor is poor due to the fault of the equipment cooling water system, fire fighting water stored in a fire fighting system can be switched to be the air compressor through the control unit for cooling, so that the reliability of the air compressor of the nuclear power plant is effectively improved.
It is worth to be noted that, in the practical application process, the control unit monitors the flow rate of the cooling water flowing through the air compressor in real time, namely the indication of the flow meter, and once the monitoring result is lower than the set limit value, the control unit immediately sends a starting command to the front auxiliary isolating valve, opens the auxiliary cooling pipeline, improves the flow rate of the cooling water flowing through the air compressor, ensures the heat dissipation requirement of the air compressor, and once an operator solves the fault of the equipment cooling water system, opens the main cooling pipeline of the equipment cooling water system, and closes the auxiliary cooling pipeline of the fire fighting system.
It is worth to say that the front check valve is arranged on the main cooling pipeline between the cooling water pump and the air compressor, so that the problem that the high-pressure fire-fighting water flows back into the main cooling pipeline to pollute the equipment cooling water system in the process of introducing the fire-fighting water to cool the air compressor can be effectively avoided.
As the preferable technical scheme of the utility model, the outlet of the flowmeter is respectively provided with a main outlet pipeline and an auxiliary outlet pipeline; a rear check valve is arranged on the main outlet pipeline, and the heat exchanger is arranged between the outlet of the rear check valve and the inlet of the cooling water pump; an auxiliary rear isolation valve is arranged on the auxiliary outlet pipeline, and an outlet of the rear isolation valve is connected with a catch basin of the nuclear power plant; the control unit is connected with the auxiliary rear isolation valve through a command line.
It is worth mentioning that the utility model realizes the simultaneous opening or simultaneous closing of the auxiliary front isolation valve and the auxiliary rear isolation valve through the control unit, and in the process of introducing the fire-fighting water to cool the air compressor, the used fire-fighting water can be introduced into the catch basin of the nuclear power plant to be discharged, thereby avoiding polluting the cooling water source in the equipment cooling water system; in addition, the rear check valve is arranged on the main outlet pipeline, so that cooling water with higher pressure in the main outlet pipeline can be effectively prevented from reversely flowing into the auxiliary outlet pipeline, and waste of a cooling water source in the equipment cooling water system is avoided.
As a preferable technical scheme of the present invention, a front isolation valve is provided at a cooling inlet of the air compressor, and an inlet of the front isolation valve is connected to the main cooling pipeline and the auxiliary cooling pipeline.
As a preferable technical solution of the present invention, a post-isolation valve is provided between the cooling outlet of the air compressor and the flow meter.
It is worth to say that, the front isolation valve is arranged at the cooling inlet of the air compressor, and the rear isolation valve is arranged at the cooling outlet of the air compressor, so that the cooling water pipelines at two ends can be isolated in time when the air compressor is in fault and needs to be maintained, and the air compressor can be conveniently detached.
As a preferable technical scheme of the utility model, the fire fighting system comprises a main fire fighting pipeline and an auxiliary fire fighting pipeline which are connected in parallel, and a converging main pipeline of an outlet of the main fire fighting pipeline and an outlet of the auxiliary fire fighting pipeline is connected with the auxiliary cooling pipeline.
As a preferable technical scheme of the utility model, the main fire fighting pipeline comprises an electric fire pump and a first fire fighting water tank which are connected in series.
As a preferable technical scheme of the utility model, the auxiliary fire fighting pipeline comprises a diesel fire pump and a second fire water tank which are connected in series.
Compared with the prior art, the utility model has the beneficial effects that:
the cooling system of the air compressor of the nuclear power plant comprises at least one air compressor, a main cooling pipeline from an equipment cooling water system is used as a foundation, a secondary cooling pipeline from a fire fighting system is further used as a standby, and when the cooling effect of the air compressor is poor due to the fault of the equipment cooling water system, fire fighting water stored in a fire fighting system can be switched to be the air compressor through the control unit for cooling, so that the reliability of the air compressor of the nuclear power plant is effectively improved.
Drawings
FIG. 1 is a schematic diagram of a prior art cooling system for a nuclear power plant air compressor;
FIG. 2 is a schematic view of a cooling system of an air compressor of a nuclear power plant according to embodiment 1 of the present invention;
wherein, 1-circulating water pump; 2-a heat exchanger; 3-a cooling water pump; 4-a first front isolation valve; 5-a first air compressor; 6-first rear isolation valve; 7-a first flow meter; 8-a second front isolation valve; 9-a second air compressor; 10-a second rear isolation valve; 11-a second flow meter; 12-a first gas reservoir; 13-a second gas reservoir; 14-electric fire pump; 15-a first fire water tank; 16-diesel fire pump; 17-a second fire water tank; 18-pneumatic valves; 19-a first front check valve; 20-a second front check valve; 21-a first secondary front isolation valve; 22-a second secondary front isolation valve; 23-a first secondary rear isolation valve; 24-a second secondary rear isolation valve; 25-a first rear check valve; 26-a second rear check valve; 27-a control unit.
Detailed Description
In order to make the technical solution, objects and advantages of the present invention more apparent, the present invention will be described in further detail by referring to specific embodiments and drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. For the electrical and communication fields, either a wired connection or a wireless connection is possible. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
The embodiment provides a cooling system of an air compressor of a nuclear power plant, as shown in fig. 2, the cooling system of the air compressor of the nuclear power plant comprises two air compressors, namely a first air compressor 5 and a second air compressor 9, cooling inlets of the two air compressors are connected with a main cooling pipeline from an equipment cooling water system, and cooling inlets of the two air compressors are connected with an auxiliary cooling pipeline from a fire fighting system;
a cooling water pump 3 is arranged on the main cooling pipeline, an outlet pipeline of the cooling water pump 3 is divided into two parts which are respectively connected with cooling inlets of a first air compressor 5 and a second air compressor 9, a first front check valve 19 and a first front isolation valve 4 are sequentially arranged between the cooling water pump 3 and the first air compressor 5, and a second front check valve 20 and a second front isolation valve 8 are sequentially arranged between the cooling water pump 3 and the second air compressor 9;
the auxiliary cooling pipeline is divided into two parts which are respectively connected with the cooling inlets of the first air compressor 5 and the second air compressor 9, and a first auxiliary front isolation valve 21 and a second auxiliary front isolation valve 22 are respectively arranged on the branches of the two auxiliary cooling pipelines;
a first rear isolation valve 6 and a first flow meter 7 are sequentially arranged at a cooling outlet of the first air compressor 5, a first main outlet pipeline and a first auxiliary outlet pipeline are respectively arranged at an outlet of the first flow meter 7, a first rear check valve 25 is arranged on the first main outlet pipeline, a second rear isolation valve 10 and a second flow meter 11 are sequentially arranged at a cooling outlet of the second air compressor 9, a second main outlet pipeline and a second auxiliary outlet pipeline are respectively arranged at an outlet of the second flow meter 11, a second rear check valve 26 is arranged on the second main outlet pipeline, and an outlet pipeline of the first rear check valve 25 and an outlet pipeline of the second rear check valve 26 are connected with an inlet of the cooling water pump 3 through the heat exchanger 2 after being converged; a first secondary rear isolation valve 23 is arranged on the first secondary outlet pipeline, a second secondary rear isolation valve 24 is arranged on the second secondary outlet pipeline, and the outlet of the first secondary rear isolation valve 23 and the outlet of the second secondary rear isolation valve 24 are both connected with the catch basin of the nuclear power plant;
the cooling system of the nuclear power plant air compressor further comprises a control unit 27, wherein the control unit 27 is respectively connected with the first flow meter 7 and the second flow meter 11 through monitoring lines, and the control unit 27 is respectively connected with the first auxiliary front isolation valve 21, the second auxiliary front isolation valve 22, the first auxiliary rear isolation valve 23 and the second auxiliary rear isolation valve 24 through command lines;
wherein, the factory water system takes seawater from the circulating water pump room through the circulating water pump 1, and the seawater flows through the heat exchanger 2 to absorb heat and then is discharged to the sea; an air outlet of the first air compressor 5 is connected with a first air storage tank 12, an air outlet of the second air compressor 9 is connected with a second air storage tank 13, and an outlet pipeline of the first air storage tank 12 is converged with an outlet pipeline of the second air storage tank 13 to provide compressed air for a pneumatic valve 18; the fire extinguishing system comprises a main fire fighting pipeline and an auxiliary fire fighting pipeline which are connected in parallel, the outlet of the main fire fighting pipeline is connected with the main pipeline of the outlet of the auxiliary fire fighting pipeline, the main fire fighting pipeline comprises an electric fire pump 14 and a first fire fighting water tank 15 which are connected in series, and the auxiliary fire fighting pipeline comprises a diesel fire pump 16 and a second fire fighting water tank 17 which are connected in series.
When the cooling system of the air compressor of the nuclear power plant is used, only one of the first air compressor 5 and the second air compressor 9 is operated, and the other one is used for backup; when each of the first air compressor 5 or the second air compressor 9 is in operation, the control unit 27 monitors the flow rate of the cooling water of the corresponding first flow meter 7 or the corresponding second flow meter 11 in real time, once the monitoring result is lower than a set limit value, the control unit 27 immediately issues a start command to the first sub front isolation valve 21 and the first sub rear isolation valve 23, or the control unit 27 immediately issues a start command to the second sub front isolation valve 22 and the second sub rear isolation valve 24, the corresponding sub cooling pipeline is opened, the flow rate of the cooling water flowing through the air compressors is increased, the heat dissipation requirement of the air compressors is guaranteed, and once an operator solves the fault of the equipment cooling water system, the main cooling pipeline of the equipment cooling water system is opened, and the sub cooling pipeline of the fire protection system is closed.
Comparative example 1
The comparative example provides a cooling system of an air compressor of a nuclear power plant, and as shown in fig. 1, the cooling system of the air compressor of the nuclear power plant comprises two air compressors, namely a first air compressor 5 and a second air compressor 9, wherein cooling inlets of the two air compressors are both connected with a main cooling pipeline from an equipment cooling water system, a cooling water pump 3 is arranged on the main cooling pipeline, an outlet pipeline of the cooling water pump 3 is divided into two parts and is respectively connected with the cooling inlets of the first air compressor 5 and the second air compressor 9, a first front isolation valve 4 is arranged between the cooling water pump 3 and the first air compressor 5, and a second front isolation valve 8 is arranged between the cooling water pump 3 and the second air compressor 9;
a first rear isolating valve 6 and a first flow meter 7 are sequentially arranged at a cooling outlet of the first air compressor 5, a second rear isolating valve 10 and a second flow meter 11 are sequentially arranged at a cooling outlet of the second air compressor 9, and an outlet pipeline of the first flow meter 7 is connected with an inlet of the cooling water pump 3 through the heat exchanger 2 after being converged with an outlet pipeline of the second flow meter 11;
wherein, the factory water system takes seawater from the circulating water pump room through the circulating water pump 1, and the seawater flows through the heat exchanger 2 to absorb heat and then is discharged to the sea; an air outlet of the first air compressor 5 is connected with a first air storage tank 12, an air outlet of the second air compressor 9 is connected with a second air storage tank 13, and an outlet pipeline of the first air storage tank 12 is converged with an outlet pipeline of the second air storage tank 13 to provide compressed air for a pneumatic valve 18; the fire extinguishing system comprises a main fire fighting pipeline and an auxiliary fire fighting pipeline which are connected in parallel, the outlet of the main fire fighting pipeline is connected with the main pipeline of the outlet of the auxiliary fire fighting pipeline, the main fire fighting pipeline comprises an electric fire pump 14 and a first fire fighting water tank 15 which are connected in series, and the auxiliary fire fighting pipeline comprises a diesel fire pump 16 and a second fire fighting water tank 17 which are connected in series.
When the cooling system of the air compressor of the nuclear power plant is used, only one of the first air compressor 5 and the second air compressor 9 is operated, and the other one is used for backup; when the condition that the instrument air compressing system fails due to poor cooling effect occurs in the operation process of each of the first air compressor 5 or the second air compressor 9, an operator has the ability to intervene and solve the problem completely, but the reserved processing time of the instrument air compressing system is too short, so that safety-related pneumatic valves are easily in a failure safety state, and a nuclear power plant enters an accident handling or relieving state due to the starting of a plurality of specially-designed safety facilities, and unnecessary loss is caused.
In summary, the utility model provides a cooling system of an air compressor of a nuclear power plant, the cooling system of the air compressor of the nuclear power plant comprises at least one air compressor, a main cooling pipeline from an equipment cooling water system is used as a basis, a secondary cooling pipeline from a fire fighting system is further used as a standby, when the cooling effect of the air compressor is poor due to the failure of the equipment cooling water system, fire fighting water stored in a fire fighting system can be switched to the air compressor through a control unit for cooling, and the reliability of the air compressor of the nuclear power plant is effectively improved.
The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.
Claims (7)
1. A cooling system of an air compressor of a nuclear power plant is characterized by comprising at least one air compressor, wherein a cooling inlet of the air compressor is connected with a main cooling pipeline from an equipment cooling water system, and a cooling inlet of the air compressor is connected with an auxiliary cooling pipeline from a fire fighting system; a cooling water pump is arranged on the main cooling pipeline, and a front check valve is arranged between the cooling water pump and the air compressor; a secondary front isolation valve is arranged on the secondary cooling pipeline; a flow meter is arranged at a cooling outlet of the air compressor, and a heat exchanger is arranged between an outlet of the flow meter and an inlet of the cooling water pump;
the cooling system of the air compressor of the nuclear power plant further comprises a control unit, wherein the control unit is connected with the flow meter through a monitoring line, and the control unit is connected with the front auxiliary isolation valve through a command line.
2. The cooling system of a nuclear power plant air compressor of claim 1, wherein the outlet of the flow meter is divided into a primary outlet line and a secondary outlet line; a rear check valve is arranged on the main outlet pipeline, and the heat exchanger is arranged between the outlet of the rear check valve and the inlet of the cooling water pump; an auxiliary rear isolation valve is arranged on the auxiliary outlet pipeline, and an outlet of the rear isolation valve is connected with a catch basin of the nuclear power plant; the control unit is connected with the auxiliary rear isolation valve through a command line.
3. The cooling system of a nuclear power plant air compressor of claim 1, wherein a front isolation valve is provided at a cooling inlet of the air compressor, and an inlet of the front isolation valve is connected with the main cooling pipeline and the auxiliary cooling pipeline.
4. The cooling system of a nuclear power plant air compressor of claim 1, wherein a post-isolation valve is disposed between the cooling outlet of the air compressor and the flow meter.
5. The cooling system of a nuclear power plant air compressor of claim 1, wherein the fire protection system includes a main fire protection line and an auxiliary fire protection line connected in parallel, and a combined main line of an outlet of the main fire protection line and an outlet of the auxiliary fire protection line is connected to the auxiliary cooling line.
6. The cooling system of a nuclear power plant air compressor of claim 5, wherein the main fire-fighting pipeline includes an electric fire pump and a first fire-fighting water tank connected in series.
7. The cooling system of the air compressor of the nuclear power plant according to claim 5 or 6, wherein the secondary fire fighting pipeline comprises a diesel fire pump and a second fire water tank connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122608305.9U CN216589012U (en) | 2021-10-28 | 2021-10-28 | Cooling system of air compressor of nuclear power plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122608305.9U CN216589012U (en) | 2021-10-28 | 2021-10-28 | Cooling system of air compressor of nuclear power plant |
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| CN216589012U true CN216589012U (en) | 2022-05-24 |
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| CN202122608305.9U Active CN216589012U (en) | 2021-10-28 | 2021-10-28 | Cooling system of air compressor of nuclear power plant |
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