CN217584390U - High temperature gas cooled reactor steam recovery system - Google Patents
High temperature gas cooled reactor steam recovery system Download PDFInfo
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- CN217584390U CN217584390U CN202221588662.1U CN202221588662U CN217584390U CN 217584390 U CN217584390 U CN 217584390U CN 202221588662 U CN202221588662 U CN 202221588662U CN 217584390 U CN217584390 U CN 217584390U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
Abstract
The utility model provides a high temperature gas cooled piles vapor recovery system, the system includes: the steam-water separator is arranged on the water drain flash tank; an inlet of the drain flash tank is used for being connected with an outlet of a drain pipe of a main steam pipeline, a first outlet of the drain flash tank is connected with an inlet of the steam-water separator through the first steam pipeline, and an outlet of the steam-water separator is used for being connected with an inlet of a shaft seal steam pipeline through the second steam pipeline; and the water outlet of the water spraying temperature reducing device is arranged in the drainage flash tank. The utility model discloses a steam is stored to hydrophobic flash vessel and catch water, when scram, utilizes main steam conduit, hydrophobic flash vessel and catch water interior surplus vapour supply bearing seal steam to the electric boiler start, prevents that the bearing seal from supplying absolutely and damaging the steam turbine. The utility model discloses recovery system design benefit, simple structure, the practicality is strong, has extensive application prospect.
Description
Technical Field
The utility model belongs to the technical field of the nuclear power, concretely relates to high temperature gas cooled piles vapor recovery system.
Background
The steam pipeline of the high-temperature gas cooled reactor is provided with more than 20 drainage pipelines, when the load is lower than 10% in the starting stage of the unit, a drainage valve is fully opened, dozens of tons of high-temperature steam containing certain moisture are discharged into a condenser and cannot be effectively utilized, on the other hand, the steam extraction of a steam turbine cannot meet the requirement of water supply heating, and the steam turbine needs to assist the long-term high-power operation of an electric boiler for water supply heating, so that energy waste is caused.
The current main steam system has another problem that after the emergency shutdown, the electric boiler needs at least 15 minutes for emergency start and shaft seal supply, shaft seal steam cannot be supplied immediately, after the emergency shutdown of the high-temperature gas cooled reactor, a steam generator main steam isolation valve is closed, the shaft seal is supplied by means of main steam pipeline residual steam, a steam pipeline drain valve is automatically and fully opened after the unit trips, the main steam pipeline residual steam is discharged into a condenser and can only supply shaft seal steam for less than 5 minutes, the electric boiler cannot be maintained to be started to supply shaft seal steam, and the loss of the shaft seal steam can cause the friction between a steam turbine rotor and the shaft seal to generate vibration, so that the rotor is abraded and deformed. Meanwhile, when the reactor is emergently stopped, the main steam parameters are very high, the pressure is 11Mpa, the temperature is 540 ℃, a large amount of high-temperature and high-pressure main steam enters the condenser, the risk of overtemperature and overpressure of the condenser exists, and even the internal parts of the condenser are damaged.
The prior art has at least the following problems:
1. after emergency shutdown, the residual steam discharged into the condenser by the main steam pipeline can only supply shaft seal steam for less than 5 minutes and cannot be supplied to the electric boiler to start supplying the shaft seal steam;
2. when the load is lower than 10% in the starting stage of the unit, high-temperature drainage and steam are directly discharged into a condenser and cannot be effectively utilized, so that resource waste is caused; and high-temperature high-pressure main steam directly enters the condenser, so that the risk of overtemperature and overpressure exists, and internal parts of the condenser are easily damaged.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least, provide a high temperature gas cooled and pile vapor recovery system.
An aspect of the utility model provides a high temperature gas cooled piles vapor recovery system. The system comprises: the steam-water separator is arranged on the upper portion of the steam-water separator; an inlet of the drain flash tank is used for being connected with an outlet of a drain pipe of a main steam pipeline, a first outlet of the drain flash tank is connected with an inlet of the steam-water separator through the first steam pipeline, and an outlet of the steam-water separator is used for being connected with an inlet of a shaft seal steam pipeline through the second steam pipeline;
and a water outlet of the water spraying temperature reduction device is arranged in the drainage flash tank.
Optionally, a first regulating valve is arranged on the first steam pipeline, and a second regulating valve is arranged on the second steam pipeline.
Optionally, the second regulating valve is opened during emergency shutdown.
Optionally, the system further comprises at least one pneumatic trap and a trap header, wherein an inlet of the pneumatic trap is connected to an outlet of the trap; the outlet of the pneumatic trap is connected to the inlet of the trap flash tank through the trap header.
Optionally, the system further comprises an auxiliary steam header, a deaerator, a condenser, a third steam pipeline, a fourth steam pipeline, a first drain pipeline and a second drain pipeline; a second outlet of the drainage flash tank is connected with an inlet of the auxiliary steam header through the third steam pipeline; a third outlet of the drainage flash tank is connected with a first inlet of the deaerator through the first drainage pipeline; a fourth outlet of the drainage flash tank is connected with a drainage inlet of the condenser through the second drainage pipeline; and the outlet of the auxiliary steam header is connected with the second inlet of the deaerator through the fourth steam pipeline.
Optionally, a fourth regulating valve is arranged on the third steam pipeline, a fifth regulating valve is arranged on the fourth steam pipeline, and a third regulating valve is arranged on the first drain pipeline.
Optionally, when the unit load is smaller than a first preset threshold, the third regulating valve, the fourth regulating valve, and the fifth regulating valve are opened.
Optionally, when the system includes a first regulating valve, if the unit load is greater than a second preset threshold, the third regulating valve and the fourth regulating valve are closed, and the first regulating valve is opened at the same time.
Optionally, the second drain pipe is sequentially provided with an automatic steam trap and a hydrophobic isolation valve, and the hydrophobic isolation valve is close to the hydrophobic flash tank; and two ends of the automatic steam trap are respectively connected with a fourth outlet of the drainage flash tank and a drainage inlet of the condenser through the second drainage pipeline.
Optionally, when the pressure and/or the temperature in the hydrophobic flash tank reach a set threshold, the hydrophobic isolation valve is opened.
In the high-temperature gas cooled reactor steam recovery system provided by the embodiment of the utility model, when the unit operates normally, steam is stored through the additionally arranged drain flash tank and the steam-water separator, and when the unit stops emergently, residual steam in the main steam pipeline, the drain flash tank and the steam-water separator is utilized to supply shaft seal steam to the electric boiler for starting, so that the steam turbine is prevented from being damaged due to the supply interruption of the shaft seal; at the unit start-up initial stage, carry out the decompression cooling to high-temperature steam through hydrophobic flash vessel and water spray attemperator, retrieve steam to the oxygen-eliminating device, when avoiding the unit low-load operation, high-temperature steam directly discharges into the condenser, causes the energy waste.
Drawings
Fig. 1 is a schematic structural diagram of a steam recovery system of a high temperature gas cooled reactor of the present invention.
In the figure:
1. a main steam line; 2. a drain pipe; 3. a pneumatic trap; 4. a drain header;
5. a hydrophobic flash tank; 6. a water spray desuperheating device; 7. a first steam line; 8. a first regulating valve; 9. an auxiliary steam header; 10. a second steam line; 11. a second regulating valve; 12. a deaerator; 13. a first drain conduit; 14. a third regulating valve; 15. a steam-water separator; 16. a third steam line; 17. a fourth regulating valve; 18. a fourth steam line; 19. a fifth regulating valve; 20. a condenser; 21. a second drain conduit; 22. a hydrophobic isolation valve; 23. an automatic steam trap.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention is described in further detail below with reference to the accompanying drawings and the detailed description.
As shown in fig. 1, a steam recycling system for a high temperature gas cooled reactor includes: the device comprises a drainage flash tank 5, a steam-water separator 15, a water spraying temperature reduction device 6, a first steam pipeline 7 and a second steam pipeline 10; an inlet of the hydrophobic flash tank 5 is connected with an outlet of a hydrophobic pipe 2 of a main steam pipeline 1, a first outlet of the hydrophobic flash tank 5 is connected with an inlet of the steam-water separator 15 through the first steam pipeline 7, and an outlet of the steam-water separator 15 is connected with an inlet of a shaft seal steam pipeline through the second steam pipeline 10;
and the water outlet of the water spraying temperature reducing device 6 is arranged in the drainage flash tank 5.
Specifically, the steam-water separator 15 is communicated with the hydrophobic flash tank 5 to store steam together. In the process of unit starting and low-load operation, steam containing certain moisture in the main steam pipeline 1 is collected through the drain pipe 2 and then input into the drain flash tank 5, and the pressure and the temperature in the drain flash tank 5 are controlled by spraying water through the water spraying attemperator 6. When the unit normally operates, the drainage flash tank and the steam-water separator store steam; when the reactor is emergently stopped, the residual steam in the main steam pipeline, the drainage flash tank and the steam-water separator is supplied with shaft seal steam for at least 30 minutes, and the residual steam is used for starting an electric boiler to supply the shaft seal steam, so that the damage of equipment caused by the cut-off of the shaft seal is prevented.
Illustratively, as shown in fig. 1, a first regulating valve 8 is disposed on the first steam pipeline 7, and a second regulating valve 11 is disposed on the second steam pipeline 10.
In this embodiment, through the first governing valve and the second governing valve that set up for adjust the break-make of first steam conduit with the second steam conduit, it is convenient to adjust.
For example, as shown in fig. 1, in the event of a scram, the second control valve 11 is opened.
Specifically, when the unit normally operates, the first regulating valve is opened, so that the steam-water separator and the drainage flash tank are in a communicated state to store steam. When the reactor is emergently stopped, the second regulating valve is opened, the residual steam in the main steam pipeline, the drainage flash tank and the steam-water separator is supplied with shaft seal steam for more than 30 minutes through the second steam pipeline, and at the moment, an operator starts an electric boiler to supply the shaft seal steam, so that the damage of equipment caused by the supply interruption of the shaft seal is prevented.
Illustratively, as shown in FIG. 1, the system further comprises at least one pneumatic trap 3 and a trap header 4, the inlet of the pneumatic trap 3 being connected to the outlet of the trap 2; the outlet of the pneumatic trap 3 is connected to the inlet of the trap 5 through the trap header 4.
Specifically, a plurality of drain pipes can be arranged on the main steam pipeline, and the pneumatic drain valves correspond to the drain pipes one to one and are used for discharging drain water in the main steam pipeline when a unit is in low load. In this embodiment, the steam in the main steam pipeline 1 is collected into the drain flash tank 5 through the drain pipe 2, the pneumatic drain valve 3 and the drain header 4, and a part or all of the pneumatic drain valves are regulated and opened according to different loads of the unit to regulate the amount of the steam discharged into the drain flash tank 5.
More specifically, when the load of the unit is smaller than a first preset threshold value, the pneumatic steam trap is fully opened, high-temperature steam containing certain moisture enters the drainage flash tank through the drain pipe and the drainage header pipe, and the pressure of the drainage flash tank is reduced to 1.4Mpa under the effects of the expansion of the drainage flash tank and the water spray attemperator. When the load of the unit exceeds the first preset threshold value, at the moment, all high-temperature high-pressure superheated steam is in the main steam pipeline, drainage is not needed, a part of the pneumatic drain valves are kept in an open state according to needs, the rest of the pneumatic drain valves are closed, part of the steam in the main steam pipeline is introduced, part of the steam is introduced into the drainage flash tank, and the pressure of the drainage flash tank is maintained at 1.4Mpa through the flash tank and the water spray attemperator. When the load of the unit reaches above a second preset threshold value, the unit gradually reaches a self-sealing state, namely the shaft seal of the low pressure cylinder is sealed by the steam leakage of the shaft seal of the high pressure cylinder. The auxiliary electric boiler can be shut down and put in a hot standby state. Along with the load increase of the unit, when the steam extraction of the steam turbine meets the requirement of water supply heating, the steam in the main steam pipeline does not need to be extracted for water supply heating. And keeping one pneumatic drain valve in a slightly-opened state, closing all the rest pneumatic drain valves, opening a first regulating valve to enable the steam-water separator and the drain flash tank to be in a communicated state to store steam, and controlling the pressure and the temperature in the drain flash tank and the steam-water separator to respectively reach set thresholds by the water spraying temperature reducing device. When the reactor is emergently stopped, the water spray attemperator is stopped, the pneumatic drain valve on the main steam pipeline is automatically opened, meanwhile, the second regulating valve is opened, residual steam in the main steam pipeline, the drain flash tank and the steam-water separator is supplied with shaft seal steam for at least 30 minutes through the second steam pipeline, and at the moment, an operator starts the electric boiler to supply the shaft seal steam, so that the damage of equipment caused by the supply interruption of the shaft seal is prevented.
Illustratively, as shown in fig. 1, the system further includes an auxiliary steam header 9, a deaerator 12, a condenser 20, a third steam pipeline 16, a fourth steam pipeline 18, a first drain pipeline 13 and a second drain pipeline 21; a second outlet of the drain flash tank 5 is connected with an inlet of the auxiliary steam header 9 through the third steam pipeline 16; a third outlet of the drain flash tank 5 is connected with a first inlet of the deaerator 12 through the first drain pipeline 13; a fourth outlet of the drain flash tank 5 is connected with a drain inlet of the condenser 20 through the second drain pipeline 21; the outlet of the auxiliary steam header 9 is connected with the second inlet of the deaerator 12 through the fourth steam pipe 18.
Specifically, in the unit starting process, the steam containing certain moisture in the main steam pipeline 1 is collected by the drain pipe 2 and then input into the drain flash tank 5. The drain flash tank 5 is connected to the deaerator 12 through the third steam pipeline 16, the fourth steam pipeline 18 and the first drain pipeline 13, and the drain flash tank 5 is connected to the condenser 20 through the second drain pipeline 21; steam in the drain flash tank 5 is input into the auxiliary steam header 9 through the third steam pipeline 16 and then input into the deaerator 12 through the fourth steam pipeline 18; and the drainage in the drainage flash tank 5 is respectively input into the deaerator 12 and the condenser 20 through a first drainage pipeline 13 and a second drainage pipeline 21.
In the embodiment, the steam recovered by the drainage flash tank is used for heating the water supplied by the deaerator, so that the heat of the unit is effectively recovered, the energy waste is avoided, the power and the service time of the auxiliary electric boiler are reduced, and a large amount of electric energy and cost are saved; high-temperature high-pressure steam in the main steam pipeline is introduced into the drainage flash tank for cooling and depressurizing, so that the high-temperature high-pressure steam is prevented from directly entering the condenser and being damaged, and the condenser plays a role in protecting the condenser.
Illustratively, as shown in fig. 1, a fourth regulating valve 17 is disposed on the third steam pipe 16, a fifth regulating valve 19 is disposed on the fourth steam pipe 18, and a third regulating valve 14 is disposed on the first drain pipe 13.
In this embodiment, the third regulating valve 14, the fourth regulating valve 17 and the fifth regulating valve 19 may be opened according to different requirements, so that the drain and the steam in the drain flash tank are introduced into the deaerator, the regulation is convenient, and the control is more accurate.
For example, as shown in fig. 1, when the group load is less than a first predetermined threshold value, the third control valve 14, the fourth control valve 17 and the fifth control valve 19 are opened.
Specifically, the first preset threshold may be 5% to 15%, and further, the first preset threshold may be 10%. In this embodiment, when the unit is started and the unit load is less than a first preset threshold, the first preset threshold is 10%, steam with a high water content is in the drain pipe, and the pneumatic drain valves are all opened to drain water in the main steam pipe. In the process, steam with high water content is converged into the drainage flash tank, and the pressure is reduced to 1.4Mpa under the water spraying effect of the water spraying temperature reducing device. And opening the fourth regulating valve to recover the steam in the drainage flash tank to the auxiliary steam header through the third steam pipeline, and then opening the fifth regulating valve to introduce the steam into the deaerator through the fourth steam pipeline for water supply heating. This process water spray desuperheater water spray volume is great, and it is hydrophobic more in the hydrophobic flash tank, opens the third governing valve will the higher hydrophobic of temperature passes through in the hydrophobic flash tank first hydrophobic pipeline retrieve extremely in the oxygen-eliminating device, the regulation and control of third governing valve liquid level in the hydrophobic flash tank. When the recovered drain water and the recovered steam meet the water supply heating requirement of the deaerator, the auxiliary electric boiler does not supply auxiliary steam for water supply heating any more, and is only used for providing shaft seal steam, so that a large amount of electric energy and cost are saved.
More specifically, when unit load reaches more than the first predetermined threshold value, the first predetermined threshold value can be 10%, at this moment, all be high temperature high pressure superheated steam in the main steam pipeline, need not carry out hydrophobic, remain partial pneumatic trap as the open mode according to unit needs, close all the rest pneumatic trap introduces the steam in the partial main steam pipeline, and lets in steam in the hydrophobic flash tank, through water spray attemperator 6 will hydrophobic flash tank pressure maintains 1.4Mpa, continues to retrieve hydrophobic and steam in the hydrophobic flash tank to be used for the feedwater heating in the oxygen-eliminating device. When the load of the unit reaches above a second preset threshold, the range of the second preset threshold can be 20% -30%, preferably, the second preset threshold is 25%, and the unit gradually reaches a self-sealing state, namely, the shaft seal of the low-pressure cylinder is sealed by the leaked steam of the shaft seal of the high-pressure cylinder. The auxiliary electric boiler can be shut down and put in a hot standby state.
For example, as shown in fig. 1, when the system includes the first regulating valve 8, if the unit load is greater than a second predetermined threshold, the third regulating valve 14 and the fourth regulating valve 17 are closed, and the first regulating valve 8 is opened.
Specifically, when the unit load exceeds a second preset threshold value and the unit load is increased, the unit normally operates, and when steam extraction of the steam turbine meets the requirement of water supply heating, main steam does not need to be extracted for water supply heating. And closing the third regulating valve and the fourth regulating valve, keeping one pneumatic drain valve in a slightly-opened state, closing all the rest pneumatic drain valves, and opening the first regulating valve to enable the steam-water separator and the drain flash tank to be in a communicated state to store steam. And the water spraying temperature reduction device controls the pressure and/or temperature in the drainage flash tank and the steam-water separator to be a set threshold value. When the reactor is emergently stopped, the water spraying and temperature reducing device is stopped, the pneumatic drain valve is automatically opened, the second regulating valve is automatically opened, residual steam in the main steam pipeline, the drain flash tank and the steam-water separator is supplied to the shaft seal steam through the second steam pipeline for at least 30 minutes, and at the moment, an operator starts the electric boiler to supply the shaft seal steam, so that the damage to equipment caused by the supply interruption of the shaft seal is prevented.
For example, as shown in fig. 1, an automatic steam trap 23 and a hydrophobic isolation valve 22 are sequentially disposed on the second hydrophobic pipeline 21, and the hydrophobic isolation valve 22 is close to the hydrophobic flash tank 5; and two ends of the automatic steam trap 23 are respectively connected with the fourth outlet of the hydrophobic flash tank 5 and the hydrophobic inlet of the condenser 20 through the second hydrophobic pipeline 21.
Specifically, the hydrophobic isolation valve 22 is opened, and the interior of the hydrophobic flash tank 5 is drained into the condenser 20 through the automatic steam trap 23, so that the adjustment is convenient and the control is more accurate.
For example, as shown in fig. 1, when the pressure and/or temperature in the hydrophobic flash tank 5 reaches a set threshold, the hydrophobic isolation valve 22 is opened.
In this embodiment, when the unit load exceeds the second preset threshold value and increases along with the unit load, the unit operates normally, and when the steam turbine extracts steam to meet the feed water heating requirement, the steam in the main steam pipeline does not need to be extracted for feed water heating. At the moment, the third regulating valve and the fourth regulating valve are closed, one pneumatic drain valve is kept in a slightly-opened state, the rest valves are all closed, the first regulating valve is opened, the steam-water separator and the drain flash tank are in a communicated state to store steam, only a small part of steam in the main steam pipeline is introduced according to needs, and the steam is introduced into the drain flash tank. And when the pressure and/or the temperature in the drainage flash tank reach a set threshold value, the drainage isolation valve is opened, the water spraying quantity of the water spraying temperature reduction device is smaller in the process, and the drainage in the drainage flash tank is discharged into the condenser through the automatic drainage device. The set threshold range of the pressure in the hydrophobic flash tank is 4.5-5.5 Mpa, the set threshold range of the temperature in the hydrophobic flash tank is 350-400 ℃, and preferably, the set threshold range of the pressure in the hydrophobic flash tank is 5Mpa, and the set threshold range of the temperature in the hydrophobic flash tank is 380 ℃.
It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A high temperature gas cooled reactor vapor recovery system, comprising: the steam-water separator is arranged on the water drain flash tank;
an inlet of the hydrophobic flash tank is connected with an outlet of a hydrophobic pipe of a main steam pipeline, a first outlet of the hydrophobic flash tank is connected with an inlet of the steam-water separator through the first steam pipeline, and an outlet of the steam-water separator is connected with an inlet of a shaft seal steam pipeline through the second steam pipeline;
and a water outlet of the water spraying temperature reduction device is arranged in the drainage flash tank.
2. The system of claim 1, wherein the first steam line has a first regulating valve disposed thereon and the second steam line has a second regulating valve disposed thereon.
3. The system of claim 2, wherein the second regulator valve is opened upon a scram.
4. The system of any one of claims 1 to 3, further comprising at least one pneumatic trap and a trap header, the pneumatic trap having an inlet connected to the trap outlet; the outlet of the pneumatic trap is connected to the inlet of the trap flash tank through the trap header.
5. The system of any one of claims 1 to 3, further comprising an auxiliary steam header, a deaerator, a condenser, a third steam conduit, a fourth steam conduit, a first drain conduit, and a second drain conduit; a second outlet of the drainage flash tank is connected with an inlet of the auxiliary steam header through the third steam pipeline; a third outlet of the drainage flash tank is connected with a first inlet of the deaerator through the first drainage pipeline; a fourth outlet of the drainage flash tank is connected with a drainage inlet of the condenser through the second drainage pipeline; and the outlet of the auxiliary steam header is connected with the second inlet of the deaerator through the fourth steam pipeline.
6. The system of claim 5, wherein a fourth regulating valve is disposed on the third steam line, a fifth regulating valve is disposed on the fourth steam line, and a third regulating valve is disposed on the first drain line.
7. The system of claim 6, wherein the third, fourth, and fifth regulator valves are open when a consist load is less than a first preset threshold.
8. The system of claim 7, wherein when the system includes a first regulating valve, if the unit load is greater than a second predetermined threshold, the third regulating valve and the fourth regulating valve are closed while the first regulating valve is open.
9. The system of claim 5, wherein an automatic steam trap and a hydrophobic isolation valve are sequentially disposed on the second hydrophobic pipeline, the hydrophobic isolation valve being proximate to the hydrophobic flash tank; and the two ends of the automatic steam trap are respectively connected with the fourth outlet of the drainage flash tank and the drainage inlet of the condenser through the second drainage pipeline.
10. The system of claim 9, wherein the hydrophobic isolation valve opens when pressure and/or temperature within the hydrophobic flash tank reaches a set threshold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221588662.1U CN217584390U (en) | 2022-06-23 | 2022-06-23 | High temperature gas cooled reactor steam recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221588662.1U CN217584390U (en) | 2022-06-23 | 2022-06-23 | High temperature gas cooled reactor steam recovery system |
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| CN217584390U true CN217584390U (en) | 2022-10-14 |
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| CN202221588662.1U Active CN217584390U (en) | 2022-06-23 | 2022-06-23 | High temperature gas cooled reactor steam recovery system |
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2022
- 2022-06-23 CN CN202221588662.1U patent/CN217584390U/en active Active
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