Passive ventilation system simulation test room

Abstract

The utility model relates to the technical field of nuclear power, and particularly discloses a passive ventilation system simulation test room, which comprises a main control room, the ventilation system is used for conveying air into the main control chamber; the indoor temperature adjusting system is used for adjusting the temperature in the master control room; the control cabinet is arranged on the master control room and electrically connected to the ventilation system and the indoor temperature adjusting system. The ventilation system comprises an ejector, a first silencer, a second silencer, a filter and a heat exchange assembly, wherein the first silencer and the second silencer communicate with the ejector, the filter communicates with the first silencer, and the heat exchange assembly is connected to the filter. One end of the second silencer is connected with a first connecting pipe, one end of the first connecting pipe is connected with a second connecting pipe through a first three-way valve, an air outlet of the second connecting pipe is formed in the main control chamber, and one end of the first silencer communicates with the first three-way valve through a third connecting pipe; an air outlet in one end of the fourth connecting pipe is formed in the master control room. The utility model has the effect of verifying the reliability of the passive cooling complete technology and equipment.

Description

Technical Field

[0001] This application relates to the field of nuclear power technology, and in particular to a passive ventilation system simulation laboratory. Background Technology

[0002] Currently, in order to meet the performance requirements of third-generation nuclear power technology, the existing technology adopts a passive design concept and does not set up a safety-grade AC power system. In order to meet the safety objectives of nuclear power plants, it is necessary to design, develop and manufacture a set of passive cooling technologies and equipment suitable for the main control room area of ​​the Hainan Changjiang small modular reactor. Utility Model Content

[0003] In order to address the issues of passively dissipating heat and moisture in a room and providing adequate fresh air, this application provides a passive ventilation system simulation laboratory.

[0004] The passive ventilation system simulation laboratory provided in this application adopts the following technical solution:

[0005] include:

[0006] Main control room;

[0007] A ventilation system is used to supply air to the main control room;

[0008] Indoor temperature control system, used to regulate the main indoor temperature;

[0009] The control cabinet is located in the main control room and is electrically connected to the ventilation system and the indoor temperature control system.

[0010] The ventilation system includes an injector, a first silencer and a second silencer connected to the injector, a filter connected to the first silencer, and a heat exchange assembly connected to the filter; one end of the second silencer is connected to a first connecting pipe, and one end of the first connecting pipe is connected to the second connecting pipe through a first three-way valve. The air outlet of the second connecting pipe is located in the main control room. One end of the first silencer is connected to the first three-way valve through a third connecting pipe. The heat exchange assembly is provided with a fourth connecting pipe, and the air outlet of one end of the fourth connecting pipe is located in the main control room.

[0011] By adopting the above technical solution, when a passive system is required, the external space is first compressed and flowed at high speed through ejectors, passing through silencers, filters, heat exchange components, etc., to deliver the noise-reduced, filtered, and cooled air into the main control room. This technology and equipment can passively remove heat and moisture from the room and provide an appropriate amount of fresh air in the event of a nuclear power plant accident or a complete power outage.

[0012] In one possible implementation, the heat exchange assembly includes a first heat exchanger connected to a filter and a fourth connecting pipe at both ends, a water tank connected to the first heat exchanger, a refrigeration unit connected to the water tank, and a water storage tank connected to the water tank.

[0013] In one possible implementation, a second three-way valve is provided between the first heat exchanger and the filter, and a fifth connecting pipe is provided on the second three-way valve, with one end of the fifth connecting pipe connected to the first connecting pipe.

[0014] In one possible implementation, the ventilation system further includes a fan, a first exhaust duct and a second exhaust duct connected to the fan; a second heat exchanger is provided on one side of the water tank, one end of the first exhaust duct is connected to the second heat exchanger, one end of the second exhaust duct is located in the main control room, a third exhaust duct is connected to the end of the second heat exchanger away from the first exhaust duct, and one end of the third exhaust duct extends into the main control room.

[0015] In one possible implementation, the ventilation system further includes a fourth exhaust duct with its two ends connected to the first exhaust duct and the second exhaust duct, respectively.

[0016] In one possible implementation, the indoor temperature control system includes several electric heaters located in the main control room.

[0017] In one possible implementation, the indoor temperature control system includes several humidifiers located in the main control room.

[0018] In one possible implementation, the indoor temperature control system includes several dehumidifiers located in the main control room.

[0019] In one possible implementation, the indoor temperature control system includes several split air conditioners located in the main control room.

[0020] In summary, this application includes the following beneficial technical effects: establishing a simulation test laboratory to verify the reliability of passive cooling complete set of technologies and equipment. Attached Figure Description

[0021] Figure 1 This is an overall schematic diagram based on an embodiment of this application;

[0022] Figure 2 This is a structural schematic diagram as part of an embodiment, mainly illustrating the ventilation system;

[0023] Figure 3 yes Figure 2 An enlarged schematic diagram of part A.

[0024] Reference numerals: 1. Main control room; 2. Control cabinet; 3. Ejector; 4. First silencer; 5. Second silencer; 6. Filter; 7. First connecting pipe; 8. First three-way valve; 9. Second connecting pipe; 10. Third connecting pipe; 11. Fourth connecting pipe; 12. Water tank; 13. Refrigeration unit; 14. First heat exchanger; 15. Second heat exchanger; 16. Water storage tank; 17. Second three-way valve; 18. Fifth connecting pipe; 19. Fan; 20. First exhaust duct; 21. Second exhaust duct; 22. Third exhaust duct; 23. Fourth exhaust duct; 24. Electric heater; 25. Humidifier; 26. Dehumidifier; 27. Split air conditioner. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0026] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0027] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0028] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] Reference Figure 1-3The passive ventilation system simulation test chamber includes a main control room 1, a control cabinet 2, a ventilation system, and an indoor temperature control system. The control cabinet 2 is installed outside the main control room 1 and is electrically connected to the ventilation system and the indoor temperature control system. It is used to monitor and collect various data before and after the test. The ventilation system includes an injector 3, a silencer, a filter 6, and a heat exchange assembly. The injector 3, silencer, filter 6, and heat exchange assembly are connected sequentially by pipes. There are two silencers, namely a first silencer 4 and a second silencer 5. The first silencer 4 and the second silencer 5 are respectively connected to the two ends of the injector 3 and are arranged vertically. One end of the first silencer 4 is connected to the filter 6, and one end of the second silencer 5 is connected to a first connecting pipe 7. One end of the first connecting pipe 7 is connected to a second connecting pipe 9 through a first three-way valve 8. The air outlet of the second connecting pipe 9 is located in the main control room 1. One end of the first silencer 4 is connected to the first three-way valve 8 through a third connecting pipe 10. The heat exchange assembly is provided with a fourth connecting pipe 11, and the air outlet of one end of the fourth connecting pipe 11 is located in the main control room 1. When a passive system is required, the external space is first compressed and flowed at high speed through ejector 3, passing through silencer, filter 6, heat exchange components, etc., and the noise-reduced, filtered, and cooled air is delivered into the main control room 1. This technology and equipment can passively remove heat and moisture from the room and provide an appropriate amount of fresh air in the event of a nuclear power plant accident or a complete power outage.

[0030] The heat exchange assembly includes a water tank 12, a refrigeration unit 13, a first heat exchanger 14, a second heat exchanger 15, and a water storage tank 16. The water tank 12, refrigeration unit 13, and water storage tank 16 are all installed outside the main control room 1. The water tank 12 is connected to the water storage tank 16 via a water pipe, and the water storage tank 16 provides water to the water tank 12. The refrigeration unit 13 is connected to the water tank 12 via a pipeline. Before the test, the temperature inside the water tank 12 is adjusted to the initial test conditions. Then, the refrigeration unit 13 is turned off, and the connecting pipeline between it and the water tank 12 is disconnected. During the test, the refrigeration unit 13 remains in a stopped state. The first heat exchanger 14 and the second heat exchanger 15 are respectively located on the water tank 12 and connected to it. The two ends of the first heat exchanger 14 are connected to the filter 6 and the fourth connecting pipe 11 via pipelines, respectively.

[0031] The first heat exchanger 14 and the filter 6 are connected by a second three-way valve 17, and a fifth connecting pipe 18 is provided on the second three-way valve 17, one end of which is connected to the first connecting pipe 7.

[0032] The ventilation system also includes a fan 19, a first exhaust duct 20, a second exhaust duct 21, a third exhaust duct 22, and a fourth exhaust duct 23. The fan 19 has two air outlets. The first exhaust duct 20 and the second exhaust duct 21 are respectively connected to the two air outlets. One end of the first exhaust duct 20 is connected to the second heat exchanger 15, and one end of the second exhaust duct 21 is located inside the main control room 1. One end of the third exhaust duct 22 is connected to the second heat exchanger 15, and the other end extends into the main control room 1. One end of the fourth exhaust duct 23 is connected to the first exhaust duct 20, and the other end is connected to the second exhaust duct 21. During normal air supply, the fan 19 serves as the power source to deliver treated air into the main control room 1.

[0033] The indoor temperature control system includes an electric heater 24, a humidifier 25, a dehumidifier 26, and a split air conditioner 27. Several electric heaters 24, humidifiers 25, dehumidifiers 26, and split air conditioners 27 are installed within the main control room 1, according to the internal space area. The split air conditioners 27 and the dehumidifiers allow the room conditions to be adjusted to the initial test conditions before the test; then, after the test, the heaters and humidifiers 25 simulate the heat and humidity loads in the room under accident conditions.

[0034] The ejector 3, silencer, filter 6, water tank 12, refrigeration unit 13, first heat exchanger 14, second heat exchanger 15, water storage tank 16, fan 19, electric heater 24, humidifier 25, dehumidifier 26, and split air conditioner 27 mentioned above are all existing technology products, so their specific structures will not be described in detail.

[0035] Through the above setup, this application constructs a simulation test chamber based on the structure of the main control room of a nuclear power plant at a 1:1 scale, and uses heat sources and moisture sources to simulate the heat dissipation and moisture dissipation under accident conditions. Outdoors, a similar pipe structure ventilation system is constructed based on the ventilation system pipe layout of the main control room 1 of the nuclear power plant.

[0036] In the description of the embodiments of this application, it should be noted that the terms "inner" and "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0037] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0038] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A non-powered ventilation system simulation laboratory characterized by: include: Main control room (1); A ventilation system for supplying air to the main control room (1); An indoor temperature control system is used to regulate the temperature inside the main control room (1); The control cabinet (2) is located in the main control room (1) and is electrically connected to the ventilation system and the indoor temperature control system; The ventilation system includes an injector (3), a first silencer (4) and a second silencer (5) connected to the injector (3), a filter (6) connected to the first silencer (4), and a heat exchange assembly connected to the filter (6); one end of the second silencer (5) is connected to a first connecting pipe (7), one end of the first connecting pipe (7) is connected to a second connecting pipe (9) through a first three-way valve (8), the air outlet of the second connecting pipe (9) is located in the main control room (1), one end of the first silencer (4) is connected to the first three-way valve (8) through a third connecting pipe (10), and the heat exchange assembly is provided with a fourth connecting pipe (11), the air outlet of one end of the fourth connecting pipe (11) is located in the main control room (1).

2. The passive ventilation system simulation test chamber according to claim 1, characterized in that: The heat exchange assembly includes a first heat exchanger (14) connected at both ends to the filter (6) and the fourth connecting pipe (11), a water tank (12) connected to the first heat exchanger (14), a refrigeration unit (13) connected to the water tank (12), and a water storage tank (16) connected to the water tank (12).

3. The passive ventilation system simulation test chamber according to claim 2, characterized in that: A second three-way valve (17) is provided between the first heat exchanger (14) and the filter (6), and a fifth connecting pipe (18) is provided on the second three-way valve (17), one end of the fifth connecting pipe (18) being connected to the first connecting pipe (7).

4. The passive ventilation system simulation test chamber according to claim 2, characterized in that: The ventilation system also includes a fan (19), a first exhaust duct (20) and a second exhaust duct (21) connected to the fan (19); a second heat exchanger (15) is provided on one side of the water tank (12), one end of the first exhaust duct (20) is connected to the second heat exchanger (15), one end of the second exhaust duct (21) is located in the main control room (1), a third exhaust duct (22) is connected to the end of the second heat exchanger (15) away from the first exhaust duct (20), and one end of the third exhaust duct (22) extends into the main control room (1).

5. The passive ventilation system simulation test chamber according to claim 4, characterized in that: The ventilation system also includes a fourth exhaust pipe (23) with its two ends connected to the first exhaust pipe (20) and the second exhaust pipe (21) respectively.

6. The passive ventilation system simulation test chamber according to claim 1, characterized in that: The indoor temperature control system includes several electric heaters (24) located in the main control room (1).

7. The passive ventilation system simulation test chamber according to claim 1, characterized in that: The indoor temperature control system includes several humidifiers (25) located in the main control room (1).

8. The passive ventilation system simulation test chamber according to claim 1, characterized in that: The indoor temperature control system includes several dehumidifiers (26) located in the main control room (1).

9. The passive ventilation system simulation test chamber according to claim 1, characterized in that: The indoor temperature control system includes several split air conditioners (27) located in the main control room (1).

Images