Containment suppression test system

Abstract

The invention provides a containment pressure suppression test system. The containment pressure suppression test system comprises a containment simulation body, a steam conveying assembly, a pressure suppression pool and a detection assembly. The containment simulation body is provided with a first cavity; the steam conveying assembly communicates with the first cavity and can convey steam into the first cavity. The suppression pool is communicated with the first cavity and can store an ice-water mixture; the detection assembly is arranged in the suppression pool; when first pressure in the first cavity reaches a first threshold value, steam in the first cavity can enter the suppression pool and make contact with ice-water mixtures with different ice content rates, and the detection assembly can obtain temperature parameters and pressure fluctuation parameters in the suppression pool; and according to the temperature parameter and the pressure fluctuation parameter, the operation state of the suppression pool under different ice contents is determined. The influence of the performance, reliability and stability of the suppression pool under different water contents can be evaluated and analyzed, and a guarantee is provided for safe operation of a nuclear power plant, a floating nuclear power plant and a nuclear business ship in a low-temperature environment.

Description

Technical Field

[0001] The invention belongs to the technical field of safety for nuclear facility containment, and in particular relates to a containment pressure suppression test system. Background Art

[0002] In relevant technologies, the containment vessel is the last barrier to prevent the radioactive products of the reactor from entering the environment, and the integrity of its results must be ensured in nuclear reactor accidents. At present, the performance research and test systems for the suppression water pool device are limited to normal temperature environments. The suppression water pool in normal temperature environment will affect the performance of the suppression system in the low temperature environment of the northern seas, endangering the safety and reliability of the system. Summary of the invention

[0003] An embodiment of the present invention provides a containment pressure suppression test system, including a containment simulation body, a steam delivery component, a pressure suppression water pool and a detection component. The containment simulation body has a first cavity; the steam delivery component is connected to the first cavity and can deliver steam to the first cavity; the pressure suppression water pool is connected to the first cavity and can store an ice-water mixture; the detection component is arranged in the pressure suppression water pool; when the first pressure in the first cavity reaches a first threshold value, the steam in the first cavity can enter the pressure suppression water pool and contact with the ice-water mixture with different ice contents, and the detection component can obtain the temperature parameters and pressure fluctuation parameters in the pressure suppression water pool, so as to determine the operating state of the pressure suppression water pool at different ice contents according to the temperature parameters and the pressure fluctuation parameters.

[0004] The beneficial effects brought by the present invention are as follows:

[0005] It can be seen from the above scheme that an embodiment of the present invention provides a containment pressure suppression test system. When the pressure in the containment simulation body reaches a first pressure, the entire containment simulation body is transported to a suppression water pool for condensation with an ice-water mixture with different ice contents. The temperature parameters and pressure fluctuation parameters in the suppression water pool at different ice contents are detected by a detection component. The influence of different water contents on the performance, reliability and stability of the suppression water pool can be evaluated and analyzed, thereby providing more comprehensive protection for the safe operation of nuclear power plants, floating nuclear power plants and nuclear merchant ships in low-temperature environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 A schematic diagram of a containment pressure suppression test system according to an embodiment of the present invention is shown.

[0007] In the figure, 100 is a containment pressure suppression test system, 102 is a containment simulation body, 104 is a first cavity, 106 is a steam delivery component, 108 is a pressure suppression pool, 110 is an observation window, 112 is a detection component, 114 is a first temperature sensor, 116 is a first pressure sensor, 118 is an ice delivery device, 120 is a refrigeration device, 122 is a heat exchanger, 124 is a compressor, 126 is a first inlet, 128 is a first outlet, 130 is a second inlet, 132 is a second outlet, 134 is an ice crushing device, 136 is a fifth pipeline, 138 is a sixth pipeline, 140 is a first pipeline, and 141 is a second pipeline. 3. Control valve 142. 4. Control valve 144. 3. Delivery pump 146. Camera device 148. 2. Temperature sensor 150. 2. Pressure sensor 152. Nozzle 154. Nozzle 156. 1. Pipe 158. 1. Flow sensor 160. 2. Pipe 162. 2. Flow sensor 164. 3. Pipe 166. 4. Pipe 168. 1. Control valve 170. 2. Control valve 172. 1. Delivery pump 174. 2. Delivery pump 176. 5. Control valve 178. 6. Control valve DETAILED DESCRIPTION

[0008] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0009] like Figure 1 As shown, in some embodiments of the present invention, a containment pressure suppression test system 100 is proposed, including a containment simulation body 102, a steam delivery component 106, a pressure suppression water pool 108 and a detection component 112. The containment simulation body 102 has a first cavity 104; the steam delivery component 106 is connected to the first cavity 104 and can deliver steam into the first cavity 104; the pressure suppression water pool 108 is connected to the first cavity 104 and can store ice-water mixture; the detection component 112 is arranged in the pressure suppression water pool 108; when the first pressure in the first cavity 104 reaches a first threshold value, the steam in the first cavity 104 can enter the pressure suppression water pool 108 and contact with the ice-water mixture with different ice content rates, and the detection component 112 can obtain the temperature parameters and pressure fluctuation parameters in the pressure suppression water pool 108, so as to determine the operating state of the pressure suppression water pool 108 at different ice content rates according to the temperature parameters and the pressure fluctuation parameters.

[0010] In this embodiment, the containment simulation body 102 has a first cavity 104; the steam delivery assembly 106 is connected to the first cavity 104 and can deliver steam into the first cavity 104 to achieve the installation between the containment simulation body 102 and the steam delivery assembly 106, so that the steam delivery assembly 106 delivers high-temperature and high-pressure steam to the containment simulation body 102, and the temperature and pressure in the containment simulation body 102 increase to simulate the state of the containment after a high-energy pipeline rupture accident occurs in the containment. By setting the containment simulation body 102, the real containment structure of the nuclear power plant is simulated, and the first cavity 104 can accommodate and simulate the steam pressure environment that may be generated inside the nuclear power plant. The steam delivery assembly 106 is responsible for delivering steam to the first cavity 104 of the containment simulation body 102. These steams simulate the high-temperature and high-pressure steam that may be generated in the event of a nuclear power plant accident. The suppression water pool 108 is connected to the first cavity 104 and can store an ice-water mixture to achieve the connection between the suppression water pool 108 and the containment simulation body 102, so that the steam in the containment simulation body 102 can be transported to the suppression water pool 108. When the first pressure in the first cavity 104 reaches the first threshold, the steam in the first cavity 104 can enter the suppression water pool 108 and contact with the ice-water mixture with different ice contents. The detection component 112 can obtain the temperature parameters and pressure fluctuation parameters in the suppression water pool 108 to determine the operating state of the suppression water pool 108 at different ice contents according to the temperature parameters and pressure fluctuation parameters. By transporting the steam in the containment simulation body 102 to the first cavity 104, the steam will quickly condense into water and release a large amount of heat after contacting the ice-water mixture. This process not only reduces the temperature and pressure of the steam, but also transfers heat to the ice-water mixture through heat exchange, causing it to gradually heat up, thereby reducing the pressure in the containment simulation body 102. By detecting the temperature parameters and pressure fluctuation parameters in the suppression water pool 108, the operating status of the suppression water pool 108 at different water contents can be understood. In the present application, when the pressure in the containment simulation body 102 reaches a first pressure, the entirety of the containment simulation body 102 is transported to the suppression water pool 108 for condensation with ice-water mixtures with different ice contents, and the temperature parameters and pressure fluctuation parameters in the suppression water pool 108 at different ice contents are detected by the detection component 112, so as to evaluate and analyze the influence of different water contents on the performance, reliability and stability of the suppression water pool 108, and provide more comprehensive protection for the safe operation of nuclear power plants, floating nuclear power plants and nuclear merchant ships in low temperature environments.

[0011] Specifically, the steam delivery component 106 is a steam boiler, so that the energy source term of the containment breach accident is simulated by the steam boiler.

[0012] Specifically, in Figure 1In the figure, arrow A indicates the flow path of steam between the steam delivery assembly 106 and the containment simulation body 102 , and arrow B indicates the flow path of steam between the containment simulation body 102 and the suppression water pool 108 .

[0013] This embodiment provides a containment pressure suppression test system 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0014] like Figure 1 As shown, the containment pressure suppression test system 100 further includes an ice delivery device 118 , which is in communication with the suppression water pool 108 . The ice delivery device 118 can deliver ice slurry to the suppression water pool 108 , and the liquid in the suppression water pool 108 can flow back to the ice delivery device 118 .

[0015] In this embodiment, the containment pressure suppression test system 100 further includes an ice delivery device 118, which is connected to the suppression water tank 108 to achieve the installation of the ice delivery device 118. The ice delivery device 118 can deliver ice slurry to the suppression water tank 108, so as to provide the suppression water tank 108 with ice-water mixtures with different ice contents, so that the containment pressure suppression test system 100 can conduct research on the contact between ice-water mixtures with different ice contents in the suppression water tank 108 and steam, so as to evaluate and analyze the performance and reliability of the suppression water tank 108 at different water contents. The ice delivery device 118 can continuously deliver the ice-water mixture to the suppression water tank 108, so as to adjust the proportion and temperature of the ice-water mixture in the suppression water tank 108. Through the ice-water mixture input by the ice delivery device 118, the suppression water tank 108 can quickly absorb and condense steam, thereby reducing the pressure and temperature in the simulated body in the containment. The liquid in the pressure-reducing water tank 108 can flow back into the ice-delivering device 118, and the liquid in the pressure-reducing water tank 108 can flow back into the ice-delivering device 118, thereby realizing the recycling of the liquid.

[0016] Specifically, the containment pressure suppression test system 100 further includes a third pipe 164 and a fourth pipe 166. One end of the third pipe 164 is connected to the ice delivery device 118, and the other end of the third pipe 164 is connected to the suppression water tank 108, so that the ice-water mixture in the ice delivery device 118 can enter the suppression water tank 108. One end of the fourth pipe 166 is connected to the ice delivery device 118, and the other end of the fourth pipe 166 is connected to the suppression water tank 108, so that the liquid in the suppression water tank 108 can flow back to the ice delivery device 118.

[0017] Specifically, the containment pressure suppression test system 100 further includes a first control valve 168, a second control valve 170, a first delivery pump 172, and a second delivery pump 174. The first control valve 168 and the first delivery pump 172 are arranged on the third pipeline 164. The first control valve 168 can control the on-off of the third pipeline 164. The first delivery pump 172 can drive the ice-water mixture in the ice delivery device 118 to enter the pressure suppression water tank 108. The second control valve 170 and the second delivery pump 174 are arranged on the fourth pipeline 166. The second control valve 170 can control the on-off of the fourth pipeline 166. The second delivery pump 174 can drive the ice-water mixture in the pressure suppression water tank 108 to enter the ice delivery device 118.

[0018] This embodiment provides a containment pressure suppression test system 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0019] like Figure 1 As shown, the containment pressure suppression test system 100 further includes a refrigeration device 120. The refrigeration device 120 is disposed in the ice delivery device 118 and can refrigerate the liquid in the ice delivery device 118 into ice.

[0020] In this embodiment, the containment pressure suppression test system 100 further includes a refrigeration device 120, which is arranged in the ice delivery device 118 and can refrigerate the liquid in the ice delivery device 118 into ice, so as to realize the installation of the refrigeration device 120, so that the refrigeration device 120 can cool the stored water in the ice delivery device 118 into ice, thereby forming an ice-water mixture in the ice delivery device 118, so as to realize the preparation of the ice-water mixture. Through the refrigeration process, the refrigeration device 120 ensures that there is always enough ice slurry reserve in the ice delivery device 118 to meet the test system's demand for a low-temperature environment. The refrigeration device 120 can not only refrigerate into ice, but also control the temperature in the ice delivery device 118 by adjusting its working state. This temperature regulation capability enables the ice delivery device 118 to more flexibly adapt to the needs under different test conditions, thereby improving the adaptability and flexibility of the entire system. The refrigeration device 120 and the ice delivery device 118 work closely together to form a low-temperature environment simulation unit in the test system. By working together, the two can efficiently prepare and transport ice slurry, providing a stable low-temperature environment for the suppression pool 108. The use of the refrigeration device 120 enables the test system to more accurately simulate the low-temperature environment during a nuclear power plant accident.

[0021] Specifically, the containment pressure suppression test system 100 can study the containment pressure suppression effect of the suppression water pool 108 at different water temperatures and ice contents.

[0022] Specifically, in Figure 1In the figure, arrow C indicates the path of the ice-water mixture or liquid in the suppression water tank 108 returning to the refrigeration device 120, and arrow D indicates the path of the ice slurry in the refrigeration device 120 entering the suppression water tank 108.

[0023] This embodiment provides a containment pressure suppression test system 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0024] like Figure 1 As shown, the refrigeration device 120 further includes a heat exchanger 122 and a compressor 124. The heat exchanger 122 has a first inlet 126 and a first outlet 128, and the heat exchanger 122 is located inside the ice delivery device 118; the heat exchanger 122 is located outside the ice delivery device 118, and the compressor 124 has a second inlet 130 and a second outlet 132, the second inlet 130 is connected to the first outlet 128, and the second outlet 132 is connected to the first inlet 126, and the refrigerant can flow between the compressor 124 and the heat exchanger 122.

[0025] In this embodiment, the refrigeration device 120 further includes a heat exchanger 122 and a compressor 124, so that the water stored in the ice delivery device 118 can be refrigerated by the heat exchanger 122 and the compressor 124. The heat exchanger 122 has a first inlet 126 and a first outlet 128, and the heat exchanger 122 is located in the ice delivery device 118 to achieve the installation of the heat exchanger 122. The compressor 124 has a second inlet 130 and a second outlet 132, the second inlet 130 is connected to the first outlet 128, and the second outlet 132 is connected to the first inlet 126. The refrigerant can flow between the compressor 124 and the heat exchanger 122 to achieve the connection between the compressor 124 and the heat exchanger 122. Through the circulation of the refrigerant, when the refrigerant flows to the heat exchanger 122, the heat exchanger 122 can refrigerate the ice delivery device 118. During the ice making process, the refrigerant flows in the heat exchanger 122 and absorbs heat, thereby achieving the change of the refrigerant state. By adjusting the working state of the heat exchanger 122, the temperature of the refrigerant in the heat exchanger 122 can be controlled to ensure that the refrigeration device 120 can prepare ice slurry that meets the requirements. The compressor 124 is connected to the heat exchanger 122 through its inlet and outlet, forming a complete refrigerant circulation loop. The refrigerant continuously flows between the compressor 124 and the heat exchanger 122, realizing continuous heat exchange and preparation of ice slurry.

[0026] Specifically, in Figure 1 , arrow E indicates a path for the refrigerant in the heat exchanger 122 to return to the compressor 124 , and arrow F indicates a path for the refrigerant in the compressor 124 to enter the heat exchanger 122 .

[0027] Specifically, the refrigeration device 120 further includes a fifth pipe 136 and a sixth pipe 138, one end of the fifth pipe 136 is in communication with the heat exchanger 122, and the other end of the fifth pipe 136 is in communication with the compressor 124, so that the refrigerant in the heat exchanger 122 can enter the compressor 124. One end of the sixth pipe 138 is in communication with the heat exchanger 122, and the other end of the sixth pipe 138 is in communication with the compressor 124, so that the refrigerant in the compressor 124 can flow back into the heat exchanger 122.

[0028] Specifically, the refrigeration device 120 further includes a third control valve 140, a fourth control valve 142, and a third delivery pump 144. The third control valve 140 and the third delivery pump 144 are arranged on the sixth pipeline 138. The third control valve 140 can control the on-off of the sixth pipeline 138. The third delivery pump 144 can drive the refrigerant in the compressor 124 to enter the heat exchanger 122. The fourth control valve 142 is arranged on the fifth pipeline 136. The fourth control valve 142 can control the on-off of the fifth pipeline 136.

[0029] Specifically, the compressor 124 is a refrigeration compressor unit.

[0030] This embodiment provides a containment pressure suppression test system 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0031] like Figure 1 As shown, the containment suppression test system 100 further includes an ice crushing device 134 , which is disposed in the suppression water pool 108 and can stir the ice in the ice delivery device 118 into ice slurry.

[0032] In this embodiment, the ice crushing device 134 is disposed in the suppression water pool 108, and can stir the ice in the ice delivery device 118 into ice slurry, so as to realize the installation of the ice crushing device 134, so that the ice crushing device 134 can stir the ice cubes in the ice delivery device 118 into ice slurry. The ice crushing device 134 can not only prepare ice slurry, but also control the size of ice crystal particles in the ice slurry by adjusting its working parameters, so that the ice delivery device 118 can deliver ice-water mixtures with different ice contents into the suppression water pool 108, so as to evaluate the pressure suppression performance and reliability of the containment pressure suppression test system under ice-water mixtures with different ice contents.

[0033] Specifically, the ice delivery device 118, the refrigeration device 120 and the ice crushing device 134 constitute a low temperature simulation circuit of the containment pressure suppression test system 100, so that a low temperature environment can be simulated. In the low temperature simulation circuit, the third delivery pump 144 is a low temperature pump, the heat exchanger 122 is a refrigeration heat exchanger 122, the ice crushing device 134 is an ice crushing agitator, and the ice delivery device 118 is a low temperature storage ice box. The third delivery pump 144 and the third control valve 140 are connected to the refrigerant outlet of the compressor 124 upstream, and the third control valve 140 is connected to the inlet of the heat exchanger 122 downstream. The outlet of the heat exchanger 122 is connected to the refrigerant inlet of the compressor 124 through the fourth control valve 142. The heat exchanger 122 is placed in the ice delivery device 118. The stirring blades of the ice crushing device 134 are placed in the ice delivery device 118. The first delivery pump 172 and the first control valve 168, the second delivery pump 174 and the second control valve 170 are connected to the ice delivery device 118 and the pressure suppression water tank 108. The low temperature environment simulation loop is mainly used to adjust the ratio of ice crystal particles and water, and transport the ice slurry to the suppression water tank 108, so that the suppression water tank 108 has an ice-water mixture with different ice content. Driven by the third delivery pump 144, the refrigerant with a lower temperature in the compressor 124 enters the heat exchanger 122, cools the water stored in the ice delivery device 118, and then returns to the compressor 124 and enters the next cycle. After the water stored in the ice delivery device 118 is cooled and frozen, ice slurry is formed under the stirring of the ice crushing device 134. When the ice crystal particles in the ice slurry meet the basic requirements of the test, the ice slurry in the ice delivery device 118 enters the suppression water tank 108 under the drive of the second delivery pump 174.

[0034] Specifically, the low temperature simulation loop of the containment suppression test system 100 can control the water temperature and ice content in the suppression water pool 108 .

[0035] Specifically, the ice crushing device 134 can control the size of ice crystal particles in the ice slurry.

[0036] This embodiment provides a containment pressure suppression test system 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0037] like Figure 1 As shown, the side wall of the suppression water pool 108 has an observation window 110 , and the containment suppression test system 100 further includes a camera device 146 , which is disposed outside the suppression water pool 108 and corresponding to the observation window 110 .

[0038] In this embodiment, the side wall of the suppression water pool 108 has an observation window 110 to realize the arrangement of the observation window 110, so that the contact between the steam and the ice-water mixture in the suppression water pool 108 can be understood through the observation window 110. The containment pressure suppression test system 100 also includes a camera device 146, which is arranged outside the suppression water pool 108 and is arranged corresponding to the observation window 110 to realize the installation and fixation of the camera device 146. The contact between the steam and the ice-water mixture can be observed through the camera device 146. The arrangement of the observation window 110 makes it possible to intuitively observe the direct contact condensation process of the steam in the ice-water mixture. The formation, movement and dissipation process of the steam bubbles in the ice-water mixture can be clearly seen. The camera device 146 is arranged corresponding to the observation window 110, and can record the direct contact condensation process of the steam in the ice-water mixture in real time. The shooting capability of the camera device 146 ensures that every detail of the condensation process can be accurately captured and recorded, and the effect of steam condensation can be monitored in real time, so as to record the condensation process of steam by ice-water mixtures with different ice contents, and then evaluate the pressure suppression performance and reliability of the containment pressure suppression test system under ice-water mixtures with different ice contents.

[0039] Specifically, the observation window 110 is a glass observation window.

[0040] Specifically, the camera 146 is a high-speed camera.

[0041] Specifically, the first pressure sensor 116 can monitor the pressure periodic fluctuations generated by direct contact condensation of steam in an ice-water mixture in real time; the camera device 146 can monitor and photograph the shapes of steam bubbles generated by direct contact condensation of steam in an ice-water mixture in real time.

[0042] This embodiment provides a containment pressure suppression test system 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0043] like Figure 1 As shown, the detection component 112 includes a first temperature sensor 114 and a first pressure sensor 116. The first temperature sensor 114 is disposed in the pressure suppression pool 108 and can obtain the temperature parameters in the pressure suppression pool 108; the first pressure sensor 116 is disposed in the pressure suppression pool 108 and can obtain the pressure fluctuation parameters in the pressure suppression pool 108.

[0044] In this embodiment, the detection component 112 includes a first temperature sensor 114 and a first pressure sensor 116. The first temperature sensor 114 is arranged in the pressure suppression pool 108, and can obtain the temperature parameters in the pressure suppression pool 108, so as to realize the setting of the first temperature sensor 114, thereby improving the convenience of obtaining the temperature parameters in the pressure suppression pool 108. The first pressure sensor 116 is arranged in the pressure suppression pool 108, and can obtain the pressure fluctuation parameters in the pressure suppression pool 108, so as to realize the arrangement of the first pressure sensor 116, thereby improving the convenience of obtaining the pressure fluctuation parameters in the pressure suppression pool 108. The first temperature sensor 114 can accurately obtain the temperature parameters in the pressure suppression pool 108, and reflect the changes in the water temperature in the pool in real time. The first pressure sensor 116 can accurately measure the pressure fluctuation parameters in the pressure suppression pool 108, and capture the dynamic changes in the pressure in the pool. By recording the temperature parameters and pressure fluctuation parameters in real time, it is easy to understand the working characteristics of the pressure suppression pool 108 in a low temperature environment, as well as the influence of factors such as water temperature and ice content on system performance.

[0045] Specifically, the first pressure sensor 116 is a pressure pulse sensor.

[0046] This embodiment provides a containment pressure suppression test system 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0047] like Figure 1 As shown, the containment pressure suppression test system 100 further includes a second temperature sensor 148 and a second pressure sensor 150. The second temperature sensor 148 is disposed in the containment simulation body 102 and can detect the temperature in the first cavity 104; the second pressure sensor 150 is disposed in the containment simulation body 102 and can detect the pressure in the first cavity 104.

[0048] In this embodiment, the containment pressure suppression test system 100 also includes a second temperature sensor 148 and a second pressure sensor 150. The second temperature sensor 148 is arranged in the containment simulation body 102, and can detect the temperature in the first cavity 104 to realize the arrangement of the second temperature sensor 148. The second pressure sensor 150 is arranged in the containment, and can detect the pressure in the first cavity 104 to realize the arrangement of the second pressure sensor 150. The second temperature sensor 148 is arranged in the containment, and can monitor the temperature of the first cavity 104 in real time. The temperature change of the containment simulation body 102 during the test can be understood. The second pressure sensor 150 is also arranged in the containment simulation body 102, and can monitor the pressure change in the first cavity 104 in real time. By detecting the temperature in the containment simulation body 102, when the pressure of the containment simulation body 102 reaches a set value, the steam in the first cavity 104 is transported to the pressure suppression pool 108 for condensation, thereby realizing the situation of a containment breach accident. By detecting the temperature in the containment simulation body 102, it is also possible to understand whether the pressure suppression pool 108 can suppress the pressure in the containment simulation body 102. Real-time monitoring of temperature and pressure changes in the containment simulation body 102 helps to promptly discover and resolve potential safety hazards.

[0049] Specifically, the second pressure sensor 150 is a pressure sensor.

[0050] This embodiment provides a containment pressure suppression test system 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0051] like Figure 1 As shown, the containment pressure suppression test system 100 further includes a nozzle 152 , which is located in the suppression water pool 108 . The nozzle 152 is connected to the first cavity 104 . The nozzle 152 has a plurality of nozzles 154 , and the steam in the first cavity 104 can enter the suppression water pool 108 through the plurality of nozzles 154 .

[0052] In this embodiment, the containment pressure suppression test system 100 further includes a nozzle 152, which is located in the pressure suppression pool 108, and the nozzle 152 is connected to the first cavity 104 to achieve the installation of the nozzle 152. The nozzle 152 has a plurality of nozzles 154, and the steam in the first cavity 104 can enter the pressure suppression pool 108 through the plurality of nozzles 154 to achieve steam transportation between the containment simulation body 102 and the pressure suppression pool 108. When steam is generated in the first cavity 104 and reaches a first pressure, the steam can enter the pressure suppression pool 108 uniformly through the plurality of nozzles 154 of the nozzle 152. The distribution design of the nozzles 154 helps to evenly disperse the steam in the pressure suppression pool 108, thereby improving the heat exchange efficiency between the steam and the water in the pool, and helps to reduce the pressure in the first cavity 104, thereby achieving the suppression and regulation of the pressure in the containment simulation body 102. The nozzle 152 evenly disperses the steam into the suppression pool 108 through a plurality of nozzles 154, thereby increasing the contact area between the steam and the pool water.

[0053] Specifically, the nozzle 152 is a pressure-suppressed nozzle.

[0054] Specifically, the nozzle type and the direction of the nozzle 154 of the nozzle pipe 152 can be changed according to test requirements.

[0055] This embodiment provides a containment pressure suppression test system 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0056] like Figure 1 As shown, the containment pressure suppression test system 100 further includes a first pipe 156, a first flow sensor 158, a second pipe 160, and a second flow sensor 162. One end of the first pipe 156 is connected to the steam delivery assembly 106, and the other end of the first pipe 156 is connected to the first cavity 104; the first flow sensor 158 is disposed on the first pipe 156; one end of the second pipe 160 is connected to the nozzle 152, and the other end of the second pipe 160 is connected to the first cavity 104; the second flow sensor 162 is disposed on the second pipe 160.

[0057] In this embodiment, the containment pressure suppression test system 100 further includes a first pipe 156, a first flow sensor 158, a second pipe 160, and a second flow sensor 162. One end of the first pipe 156 is connected to the steam delivery assembly 106, and the other end of the first pipe 156 is connected to the first cavity 104, so that the steam delivery assembly 106 can deliver steam to the containment simulation body 102 through the first pipe 156 to simulate the steam release that may occur in the containment of the nuclear power plant. The first flow sensor 158 is arranged on the first pipe 156, and is used to monitor and collect the flow rate and flow rate of steam in the first pipe 156 in real time. The data obtained by the first flow sensor 158 can accurately control the rate and total amount of steam entering the first cavity 104. One end of the second pipe 160 is connected to the nozzle 152, and the other end of the second pipe 160 is connected to the first cavity 104, so that when the pressure of the containment simulation body 102 reaches the first pressure, the steam can be delivered to the suppression water pool 108 for condensation through the second pipe 160 and the pressure nozzle 152. The second flow sensor 162 is disposed on the second pipeline 160 and is used to monitor and collect the flow rate and flow of steam in real time.

[0058] Specifically, the containment pressure suppression test system 100 further includes a fifth control valve 176 and a sixth control valve 178. The fifth control valve 176 is disposed on the first pipeline 156, and the first control valve 168 can control the on-off of the first pipeline 156. The sixth control valve 178 is disposed on the second pipeline 160, and the sixth control valve 178 can control the on-off of the second pipeline 160.

[0059] Specifically, the first flow sensor 158 is a steam flow meter.

[0060] Specifically, the second flow sensor 162 is a steam flow meter.

[0061] Specifically, the steam delivery assembly 106, the containment simulation body 102 and the suppression water pool 108 constitute the test loop of the containment pressure suppression test system 100. In the containment pressure suppression system test loop, the first control valve 168 is connected to the steam delivery assembly 106 upstream, and the first control valve 168 is connected to the containment simulation body 102 downstream through the second flow sensor 162. The second control valve 170 is connected to the containment simulation body 102 upstream, and the second control valve 170 is connected to the nozzle 152 downstream through the first flow sensor 158. The nozzle 152 is placed at the bottom of the suppression water pool 108, and the type of the nozzle 152 and the direction of the nozzle 154 can be changed as needed. The glass observation window 110 is installed on the side of the suppression water pool 108. The first temperature sensor 114 and the first pressure sensor 116 are installed in the suppression water pool 108. The temperature sensor and the second pressure sensor 150 are installed in the containment simulation body 102. The containment pressure suppression system test loop is mainly used to conduct research on direct contact condensation of steam in ice-water mixture and analysis of the operating characteristics of the suppression water pool 108 device under different ice content rates. After the low temperature environment simulation loop completes the temperature and ice content control in the suppression water pool 108, the second control valve 170 is kept closed and the first control valve 168 is opened. The steam delivery component 106 delivers high-temperature and high-pressure steam to the containment simulation body 102, and the temperature and pressure in the containment simulation body 102 increase to simulate the state of the containment after a high-energy pipeline rupture accident (such as a loss of water accident, a steam pipeline rupture accident) occurs in the containment. When the pressure in the containment simulation reaches the set value, the sixth control valve 178 is opened, and the steam in the containment simulation body 102 is sprayed into the suppression water pool 108 through the nozzle 152. The steam is directly contacted with the ice-water mixture in the suppression water pool 108 and condensed, and the pressure of the containment simulation body 102 decreases. The first flow sensor 158 and the second flow sensor 162 monitor the steam flow in the first pipeline 156 and the second pipeline 160 in real time. The second temperature sensor 148 and the second pressure sensor 150 monitor the temperature and pressure of the containment simulation body 102 in real time. The first temperature sensor 114 and the first pressure sensor 116 monitor the temperature and pressure fluctuations in the suppression water pool 108 in real time. The camera device 146 records the direct contact condensation process of steam in the ice-water mixture through the observation window 110.

[0062] The containment pressure suppression test system 100 of the present application simulates the performance of the containment pressure suppression system in a low-temperature environment, making the test system and operation simple and convenient for field application; the ice content of the ice-water mixture and the size of the ice slurry particles can be regulated by the ice crushing device 134; it can be used to carry out experiments on the direct contact condensation mechanism of steam in the ice-water mixture, and to study the dynamic behavior characteristics of steam condensation and ice crystal melting; it can be used to analyze and evaluate the effects of the water temperature and ice content of the suppression water tank 108 in a low-temperature environment on the performance and reliability of the containment pressure suppression system, to ensure that the suppression water tank 108 device can meet the containment pressure suppression requirements in a low-temperature environment, to avoid the local freezing of the suppression water tank 108 in the low-temperature environment of the sea area, to avoid the freezing of the nozzle 152 which will seriously affect the performance of the suppression system, and to improve safety and reliability.

[0063] The containment pressure suppression test system 100 is a test system that can simulate the containment pressure suppression in a low-temperature environment. The system consists of a low-temperature environment simulation circuit and a containment pressure suppression system test circuit, and mainly comprises a compressor 124, a refrigeration device 120, a pressure suppression water tank 108, a containment simulation body 102, a steam delivery assembly 106, a first control valve 168, a second control valve 170, a third control valve 140, a fourth control valve 142, a fifth control valve 176, a sixth control valve 178, an ice crushing device 134, a heat exchanger 122, a camera device 146, an observation window 110, a first flow sensor 158, a second flow sensor 162, a first temperature sensor 114, a second temperature sensor 148, a first pressure sensor 116, and a second pressure sensor 150, etc.

[0064] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A containment pressure suppression test system (100), characterized in that: include: A containment shell simulation body (102), wherein the containment shell simulation body (102) has a first cavity (104); a steam delivery component (106), the steam delivery component (106) being in communication with the first cavity (104) and capable of delivering steam into the first cavity (104); A pressure suppression water pool (108), the pressure suppression water pool (108) being in communication with the first cavity (104) and capable of storing an ice-water mixture; A detection component (112), the detection component (112) being disposed in the pressure suppression pool (108); When the first pressure in the first cavity (104) reaches a first threshold value, the steam in the first cavity (104) can enter the pressure suppression water pool (108) and come into contact with the ice-water mixture with different ice contents, and the detection component (112) can obtain the temperature parameters and the pressure fluctuation parameters in the pressure suppression water pool (108) to determine the operating state of the pressure suppression water pool (108) at different ice contents according to the temperature parameters and the pressure fluctuation parameters.

2. The containment pressure suppression test system (100) according to claim 1, characterized in that: Also includes: An ice delivery device (118) is connected to the pressure-suppressing water pool (108), and the ice delivery device (118) can deliver ice slurry to the pressure-suppressing water pool (108), and liquid in the pressure-suppressing water pool (108) can flow back into the ice delivery device (118).

3. The containment pressure suppression test system (100) according to claim 2, characterized in that: Also includes: A refrigeration device (120) is provided in the ice delivery device (118) and is capable of refrigerating liquid in the ice delivery device (118) into ice.

4. The containment pressure suppression test system (100) according to claim 3, characterized in that: The refrigeration device (120) further comprises: A heat exchanger (122), the heat exchanger (122) having a first inlet (126) and a first outlet (128), the heat exchanger (122) being located in the ice delivery device (118); A compressor (124), the heat exchanger (122) is located outside the ice delivery device (118), the compressor (124) has a second inlet (130) and a second outlet (132), the second inlet (130) is connected to the first outlet (128), the second outlet (132) is connected to the first inlet (126), and the refrigerant can flow between the compressor (124) and the heat exchanger (122).

5. The containment pressure suppression test system (100) according to claim 3, characterized in that: Also includes: An ice crushing device (134) is provided in the pressure-reducing water pool (108) and is capable of stirring the ice in the ice delivery device (118) into ice slurry.

6. The containment pressure suppression test system (100) according to claim 2, characterized in that: The side wall of the suppression pool (108) is provided with an observation window (110). The containment suppression test system (100) further comprises: A camera device (146), wherein the camera device (146) is disposed outside the pressure suppression pool (108) and is disposed corresponding to the observation window (110).

7. The containment pressure suppression test system (100) according to any one of claims 1 to 6, characterized in that: The detection component (112) comprises: a first temperature sensor (114), the first temperature sensor (114) being disposed in the suppression water pool (108) and capable of acquiring temperature parameters in the suppression water pool (108); A first pressure sensor (116), wherein the first pressure sensor (116) is disposed in the pressure suppression water pool (108) and is capable of acquiring pressure fluctuation parameters in the pressure suppression water pool (108).

8. The containment pressure suppression test system (100) according to any one of claims 1 to 6, characterized in that: Also includes: a second temperature sensor (148), the second temperature sensor (148) being disposed in the containment simulation body (102) and capable of detecting the temperature in the first cavity (104); A second pressure sensor (150), wherein the second pressure sensor (150) is disposed in the containment simulation body (102) and is capable of detecting the pressure in the first cavity (104).

9. The containment pressure suppression test system (100) according to any one of claims 1 to 6, characterized in that: Also includes: A nozzle (152), wherein the nozzle (152) is located in the suppression water pool (108), the nozzle (152) is connected to the first cavity (104), and the nozzle (152) has a plurality of nozzles (154), and the steam in the first cavity (104) can enter the suppression water pool (108) through the plurality of nozzles (154).

10. The containment pressure suppression test system (100) according to claim 9, characterized in that: Also includes: A first pipe (156), one end of the first pipe (156) being connected to the steam delivery component (106), and the other end of the first pipe (156) being connected to the first cavity (104); A first flow sensor (158), the first flow sensor (158) being disposed in the first pipeline (156); a second pipe (160), one end of the second pipe (160) being connected to the nozzle (152), and the other end of the second pipe (160) being connected to the first cavity (104); A second flow sensor (162), wherein the second flow sensor (162) is disposed in the second pipeline (160).

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