Cooling circulation device, high-temperature gas cooled reactor comprehensive cooling system and use method

Abstract

The invention relates to the technical field of high-temperature gas cooled reactor cooling, in particular to a cooling circulation device, a high-temperature gas cooled reactor comprehensive cooling system and a using method. A cooling circulation device comprises a liquid inlet circulation pipeline; a liquid outlet circulation pipeline; the circulating pump set is arranged between the liquid inlet circulating pipeline and the liquid outlet circulating pipeline, one end of the liquid inlet circulating pipeline is suitable for being communicated with the first liquid inlet main pipeline, one end of the liquid outlet circulating pipeline is suitable for being communicated with the first liquid inlet main pipeline, and cooling liquid flows in the first liquid inlet main pipeline; a first valve is arranged on the first liquid inlet main pipeline between the liquid inlet circulating pipeline and the liquid outlet circulating pipeline, and the communicating position of the liquid inlet circulating pipeline and the first liquid inlet main pipeline is located on the upstream of the communicating position of the liquid outlet circulating pipeline and the first liquid inlet main pipeline. The invention provides a cooling circulation device, a high-temperature gas cooled reactor comprehensive cooling system and a use method, and aims to solve the problems that power pumps and pipelines need to be additionally arranged when each system of a reactor is in an active state, the arrangement is complicated, and the cost is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-temperature gas cooled reactor cooling, in particular to a cooling circulation device, a high-temperature gas cooled reactor comprehensive cooling system and a use method. BACKGROUND

[0002] The residual heat removal system of the Shidongwan nuclear power plant high-temperature gas cooled reactor nuclear power station demonstration project (HTR-PM) is a passive system, which performs the reactor chamber cooling function during normal operation of the reactor, and under accident conditions, carries out the residual heat of the reactor out of the reactor chamber and transports it to the final heat sink, so as to ensure that the fuel cladding particles, the in-reactor components and the reactor pressure vessel temperature are below the specified limit.

[0003] The HTR-PM reactor pressure vessel support cooling system also belongs to a passive system, which carries away the heat of the reactor pressure vessel support structure and the nearby concrete under normal operation and accident conditions, prevents the material performance degradation and structural deformation of the pressure vessel supporting structure due to excessive temperature, maintains the structural integrity of the pressure vessel support, and ensures the safety barrier function of the reactor.

[0004] The HTR-PM shielding cooling water system belongs to an active system, which cools the concrete walls and penetrations of the reactor chamber and the steam generator chamber during reactor operation, so that the temperature of the penetrations and the concrete walls does not exceed the specified limit, and at the same time ensures the safe operation of important systems such as the shutdown system, the control rod drive mechanism and the main helium fan.

[0005] The equipment cooling water system is a common system for two reactors, and the objects using the equipment cooling water include: helium purification and helium auxiliary system, fuel handling system, main helium fan and other nuclear island users. The heat of the equipment cooling water is transmitted to the plant water system through the heat exchanger, and is dissipated to the atmosphere through the cooling tower.

[0006] These systems perform similar functions, and independent design increases the overall complexity of the reactor, especially when each system of the reactor is in an active state (needs to provide external power) and a passive state (does not need to provide external power), the power pump and the corresponding pipeline in the active state need to be additionally laid, which exists pipeline layout complex, and improves the cost. SUMMARY

[0007] Therefore, the present application provides a cooling circulation device, a high-temperature gas cooled reactor comprehensive cooling system and a use method, so as to solve the problems that the power pump and the corresponding pipeline in the active state need to be additionally laid, which exists pipeline layout complex, and improves the cost when each system of the reactor is in an active state (needs to provide external power) and a passive state (does not need to provide external power).

[0008] In a first aspect, the present application provides a cooling circulation device, comprising: liquid inlet circulation pipeline; liquid outlet circulation pipeline; a circulation pump group, which is arranged between the liquid inlet circulation pipeline and the liquid outlet circulation pipeline, one end of the liquid inlet circulation pipeline is adapted to communicate with a first liquid inlet main pipeline, one end of the liquid outlet circulation pipeline is adapted to communicate with the first liquid inlet main pipeline, the first liquid inlet main pipeline flows with cooling liquid, a first valve is arranged on the first liquid inlet main pipeline between the liquid inlet circulation pipeline and the liquid outlet circulation pipeline, the communication position of the liquid inlet circulation pipeline and the first liquid inlet main pipeline is located upstream of the communication position of the liquid outlet circulation pipeline and the first liquid inlet main pipeline, a first circulation valve is arranged on the liquid inlet circulation pipeline between the first liquid inlet main pipeline and the circulation pump group, and a second circulation valve is arranged on the liquid outlet circulation pipeline between the first liquid inlet main pipeline and the circulation pump group.

[0009] In the present application, only the corresponding pipeline and circulation pump need to be arranged on the side of the first liquid inlet main pipeline, and the first valve is arranged on the first liquid inlet main pipeline, so that the switching between the active state and the passive state of the first liquid inlet main pipeline can be realized, thereby simplifying the pipeline layout and reducing the corresponding cost.

[0010] In an alternative embodiment, the liquid inlet circulation pipeline and the liquid outlet circulation pipeline are further provided with a liquid inlet circulation sub-pipeline and a liquid outlet circulation sub-pipeline, one end of the liquid inlet circulation sub-pipeline is adapted to communicate with the liquid inlet circulation pipeline, and the other end is adapted to communicate with a second liquid inlet main pipeline, one end of the liquid outlet circulation sub-pipeline is adapted to communicate with the liquid outlet circulation pipeline, and the other end is adapted to communicate with the second liquid inlet main pipeline, a third circulation valve is arranged on the liquid inlet sub-pipeline, and a fourth circulation valve is arranged on the liquid outlet sub-pipeline.

[0011] In an alternative embodiment, one end of the liquid inlet circulation pipeline away from the first liquid inlet main pipeline is adapted to communicate with the liquid inlet end of the user cooling system, and one end of the liquid outlet circulation pipeline away from the first liquid inlet main pipeline is adapted to communicate with the liquid outlet end of the user cooling system.

[0012] In an alternative embodiment, the circulating pump set comprises a first circulating pump, a second circulating pump, a third circulating pump, and further comprises a first circulating branch pipe, a second circulating branch pipe, a third circulating branch pipe, a fourth circulating branch pipe, a fifth circulating branch pipe, and a sixth circulating branch pipe; the first circulating pump is connected to the liquid inlet circulating pipeline through the first circulating branch pipe, and the fifth circulating valve is arranged on the first circulating branch pipe; the first circulating pump is connected to the liquid outlet circulating pipeline through the second circulating branch pipe, and the sixth circulating valve is arranged on the second circulating branch pipe; the second circulating pump is connected to the liquid inlet circulating pipeline through the third circulating branch pipe, and the seventh circulating valve is arranged on the third circulating branch pipe; the second circulating pump is connected to the liquid outlet circulating pipeline through the fourth circulating branch pipe, and the eighth circulating valve is arranged on the fourth circulating branch pipe; the third circulating pump is connected to the liquid inlet circulating pipeline through the fifth circulating branch pipe, and the ninth circulating valve is arranged on the fifth circulating branch pipe; the third circulating pump is connected to the liquid outlet circulating pipeline through the sixth circulating branch pipe, and the tenth circulating valve is arranged on the sixth circulating branch pipe; the first circulating pump and the second circulating pump are backups of each other.

[0013] In a second aspect, the present application further provides a high-temperature gas cooled reactor integrated cooling system comprising the above-mentioned cooling circulating device.

[0014] In an alternative embodiment, at least two cooling subsystems are further included, and the at least two cooling subsystems comprise a first cooling subsystem and a second cooling subsystem; the first cooling subsystem comprises a first liquid inlet main pipeline, and the second cooling subsystem comprises a second liquid inlet main pipeline.

[0015] In an alternative embodiment, the first cooling subsystem comprises a first liquid inlet branch pipeline, a second liquid inlet branch pipeline, a first reactor shield cooling water system, and a first steam generator cabin shield cooling water assembly; one end of the first liquid inlet branch pipeline is connected to the first liquid inlet main pipeline, and the other end is connected to the first reactor shield cooling water assembly; one end of the second liquid inlet branch pipeline is connected to the first liquid inlet main pipeline, and the other end is connected to the first steam generator cabin shield cooling water assembly; the second valve is arranged on the first liquid inlet branch pipeline, and the third valve is arranged on the second liquid inlet branch pipeline.

[0016] In an alternative embodiment, the first liquid outlet sub-pipe, the second liquid outlet sub-pipe, the heat exchanger and the first liquid outlet main pipe are further included, the heat exchanger is adapted to be arranged in the cooling tower, the first liquid outlet sub-pipe is in communication with the first reactor shield cooling water assembly and the first liquid outlet main pipe respectively, the fourth valve is arranged on the first liquid outlet sub-pipe, the second liquid outlet sub-pipe is in communication with the first steam generator cabin shield cooling water assembly and the first liquid outlet main pipe respectively, the fifth valve is arranged on the second liquid outlet sub-pipe, and the end of the first liquid outlet main pipe away from the first liquid outlet sub-pipe is in communication with the heat exchanger, and the liquid outlet end of the heat exchanger is in communication with the first liquid inlet main pipe.

[0017] In an alternative embodiment, the residual heat removal assembly, the support cooling assembly, the first liquid inlet branch pipe, the first liquid outlet branch pipe, the second liquid inlet branch pipe and the second liquid outlet branch pipe are further included, the first liquid inlet branch pipe is connected with the residual heat removal assembly and the first liquid inlet sub-pipe respectively, the first liquid outlet branch pipe is connected with the residual heat removal assembly and the first liquid outlet main pipe respectively, the sixth valve is arranged on the first liquid inlet branch pipe, and the ninth valve is arranged on the first liquid outlet branch pipe; the second liquid inlet branch pipe is connected with the support cooling assembly and the first liquid inlet sub-pipe respectively, the second liquid outlet branch pipe is connected with the support cooling assembly and the first liquid outlet main pipe respectively, the seventh valve is arranged on the second liquid outlet branch pipe, and the tenth valve is arranged on the second liquid outlet branch pipe.

[0018] In a third aspect, the application further provides a method for using the cooling circulation device, when in the passive state, the first valve is opened, and the first circulation valve and the second circulation valve are closed, so that the cooling liquid flows through the first valve; when in the active state, the first valve is closed, and the first circulation valve and the second circulation valve are opened, so that the cooling liquid flows into the first liquid inlet main pipe again through the first circulation valve, the circulation pump and the second circulation valve in sequence, and the circulation pump provides power. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the description of the specific embodiments or the prior art. Obviously, the drawings described below are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0020] Figure 1 FIG. 1 is a schematic diagram of a high-temperature gas cooled reactor comprehensive cooling system according to an embodiment of the present application; Figure 2 FIG. 2 is a schematic diagram of a high-temperature gas cooled reactor comprehensive cooling system according to another embodiment of the present application; Figure 1 FIG. 3 is a partial enlarged schematic diagram of A in FIG. 2.

[0021] Explanation of reference numerals: 1, first cooling subsystem; 101, first liquid inlet main pipeline; 102, first valve; 103, first liquid inlet branch pipeline; 104, second liquid inlet branch pipeline; 105, second valve; 106, third valve; 107, first reactor shield cooling water assembly; 108, first steam generator cabin shield cooling water assembly; 109, fourth valve; 110, fifth valve; 111, first liquid outlet main pipeline; 112, sixth valve; 113, seventh valve; 114, backwashing pipeline; 115, eighth valve; 116, ninth valve; 117, tenth valve; 118, heat exchanger; 119, residual heat removal assembly; 120, support cooling assembly; 2, cooling circulation device; 201, liquid inlet circulation pipeline; 202, liquid outlet circulation pipeline; 203, first circulation valve; 204, second circulation valve; 205, liquid inlet circulation branch pipeline; 206, third circulation valve; 207, liquid outlet circulation branch pipeline; 208, fourth circulation valve; 209, first circulation pump; 210, fifth circulation valve; 211, sixth circulation valve; 212, second circulation pump; 213, third circulation pump; 214, fourth circulation pump; 3, reactor pressure vessel; 4, steam generator vessel; 5, cooling tower; 6, first expansion tank; 7, second expansion tank; 8, device cooling water / auxiliary water heat exchanger; 9, device cooling water system user; 10, safety valve. DETAILED DESCRIPTION

[0022] To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0023] The embodiments of the present application are described below with reference to the drawings. Figures 1 to 2

[0024] ​According to an embodiment of the present application, in one aspect, a cooling circulation device 2 is provided, comprising: a liquid inlet circulation pipeline 201; a liquid outlet circulation pipeline 202; a circulation pump group arranged between the liquid inlet circulation pipeline 201 and the liquid outlet circulation pipeline 202, one end of the liquid inlet circulation pipeline 201 being adapted to communicate with a first liquid inlet main pipeline 101, one end of the liquid outlet circulation pipeline 202 being adapted to communicate with the first liquid inlet main pipeline 101, the first liquid inlet main pipeline 101 flowing with cooling liquid, a first valve 102 being arranged on the first liquid inlet main pipeline 101 between the liquid inlet circulation pipeline 201 and the liquid outlet circulation pipeline 202, the communication position of the liquid inlet circulation pipeline 201 and the first liquid inlet main pipeline 101 being located upstream of the communication position of the liquid outlet circulation pipeline 202 and the first liquid inlet main pipeline 101, a first circulation valve 203 being arranged on the liquid inlet circulation pipeline 201 between the first liquid inlet main pipeline 101 and the circulation pump group, and a second circulation valve 204 being arranged on the liquid outlet circulation pipeline 202 between the first liquid inlet main pipeline 101 and the circulation pump group.

[0025] When in a passive state, the first valve 102 is opened, and the first circulation valve 203 and the second circulation valve 204 are closed, so that the cooling liquid flows through the first valve 102; when in an active state, the first valve 102 is closed, and the first circulation valve 203 and the second circulation valve 204 are opened, so that the cooling liquid flows into the first liquid inlet main pipeline 101 through the first circulation valve 203, the circulation pump and the second circulation valve 204 in sequence, and the power is provided by the circulation pump. In the present application, only the corresponding pipeline and circulation pump need to be arranged on the side of the first liquid inlet main pipeline 101, and the first valve 102 is arranged on the first liquid inlet main pipeline 101, so that the switching between the active state and the passive state of the first liquid inlet main pipeline 101 can be realized, thereby simplifying the pipeline layout and reducing the corresponding cost.

[0026] In one embodiment, as shown in Figure 1 , Figure 2 , the cooling circulation device 2 further comprises a liquid inlet circulation sub-pipeline 205 and a liquid outlet circulation sub-pipeline 207, one end of the liquid inlet circulation sub-pipeline 205 being adapted to communicate with the liquid inlet circulation pipeline 201, and the other end being adapted to communicate with a second liquid inlet main pipeline, one end of the liquid outlet circulation sub-pipeline 207 being adapted to communicate with the liquid outlet circulation pipeline 202, and the other end being adapted to communicate with the second liquid inlet main pipeline, a third circulation valve 206 being arranged on the liquid inlet sub-pipeline, and a fourth circulation valve 208 being arranged on the liquid outlet sub-pipeline. Through the arrangement of the liquid inlet circulation sub-pipeline 205 and the liquid outlet circulation sub-pipeline 207, the second liquid inlet main pipeline is communicated with the liquid inlet circulation pipeline 201 and the liquid outlet circulation pipeline 202, and the first liquid inlet main pipeline 101 and the second liquid inlet main pipeline are powered by the same pump group.

[0027] In one embodiment, as shown in Figure 1 , Figure 2As shown, one end of the liquid inlet circulating pipeline 201 away from the first liquid inlet main pipeline 101 is adapted to communicate with the liquid inlet end of the user cooling system, and one end of the liquid outlet circulating pipeline 202 away from the first liquid inlet main pipeline 101 is adapted to communicate with the liquid outlet end of the user cooling system, and the circulating pump set provides circulating power for the user cooling system.

[0028] In one embodiment, as shown in Figure 1 , Figure 2 As shown, the circulating pump set includes a first circulating pump 209, a second circulating pump 212, a third circulating pump 213, and further includes a first circulating branch, a second circulating branch, a third circulating branch, a fourth circulating branch, a fifth circulating branch, and a sixth circulating branch. The first circulating pump 209 communicates with the liquid inlet circulating pipeline 201 through the first circulating branch, and the fifth circulating valve 210 is arranged on the first circulating branch. The first circulating pump 209 communicates with the liquid outlet circulating pipeline 202 through the second circulating branch, and the sixth circulating valve 211 is arranged on the second circulating branch. The second circulating pump 212 communicates with the liquid inlet circulating pipeline 201 through the third circulating branch, and the seventh circulating valve is arranged on the third circulating branch. The second circulating pump 212 communicates with the liquid outlet circulating pipeline 202 through the fourth circulating branch, and the eighth circulating valve is arranged on the fourth circulating branch. The third circulating pump 213 communicates with the liquid inlet circulating pipeline 201 through the fifth circulating branch, and the ninth circulating valve is arranged on the fifth circulating branch. The third circulating pump 213 communicates with the liquid outlet circulating pipeline 202 through the sixth circulating branch, and the tenth circulating valve is arranged on the sixth circulating branch. The fifth circulating valve 210 and the sixth circulating valve 211 jointly control the opening and closing of the first circulating pump 209, the seventh circulating valve and the eighth circulating valve jointly control the opening and closing of the second circulating pump 212, and the ninth circulating valve and the tenth circulating valve jointly control the opening and closing of the third circulating pump 213.

[0029] In the embodiment, as shown in Figure 1 , Figure 2 The circulating pump set further includes a fourth circulating pump 214, which communicates with the liquid inlet circulating pipeline 201 through the seventh circulating branch, and the eleventh circulating valve is arranged on the seventh circulating branch. The fourth circulating pump 214 communicates with the liquid outlet circulating pipeline 202 through the eighth circulating branch, and the twelfth circulating valve is arranged on the eighth circulating branch. The eleventh circulating valve and the twelfth circulating valve jointly control the opening and closing of the fourth circulating pump 214.

[0030] In the embodiment, the first circulating pump 209 and the second circulating pump 212 can be backup for each other to provide active circulation for the first cooling subsystem 1 or other cooling subsystems; in addition, the second circulating pump 212 and the third circulating pump 213 can be backup for each other, and the third circulating pump 213 and the fourth circulating pump 214 can be backup for each other, so as to realize one operation and three backups, or one operation and one backup, or one operation and two backups (another one is under maintenance), or one operation and one backup and two maintenance, so as to optimize the configuration and utilization of the circulating pumps of the equipment cooling water 8 system and improve the operation reliability of the system.

[0031] According to the embodiment of the application, in a further aspect, there is also provided a high-temperature gas cooled reactor integrated cooling system comprising the above-mentioned cooling circulating device 2.

[0032] In one embodiment, as shown in Figure 1 , Figure 2 , the integrated cooling system further comprises at least two cooling subsystems, including the first cooling subsystem 1 and a second cooling subsystem, the first cooling subsystem 1 comprising the first liquid inlet main pipeline 101, and the second cooling subsystem comprising a second liquid inlet main pipeline. It should be noted that the structure of the first cooling subsystem 1 and the second cooling subsystem and the flow direction of the cooling liquid in the embodiment are completely the same.

[0033] In one embodiment, as shown in Figure 1 , Figure 2 , the first cooling subsystem 1 comprises a first liquid inlet branch pipeline 103, a second liquid inlet branch pipeline 104, a first reactor shielding cooling water system, and a first steam generator cabin shielding cooling water assembly 108, one end of the first liquid inlet branch pipeline 103 being in communication with the first liquid inlet main pipeline 101 and the other end being in communication with the first reactor shielding cooling water assembly 107, one end of the second liquid inlet branch pipeline 104 being in communication with the first liquid inlet main pipeline 101 and the other end being in communication with the first steam generator cabin shielding cooling water assembly 108, the first liquid inlet branch pipeline 103 being provided with a second valve 105, and the second liquid inlet branch pipeline 104 being provided with a third valve 106. In the embodiment, the first reactor shielding cooling water system is arranged in the reactor pressure vessel 3, and the first steam generator cabin shielding cooling water assembly 108 is arranged in the steam generator vessel 4, the second valve 105 controlling the opening and closing of the first liquid inlet branch pipeline 103 (the second valve 105 being in a normally open state), and the third valve 106 controlling the opening and closing of the second liquid inlet branch pipeline 104 (the third valve 106 being in a normally open state).

[0034] In one embodiment, as shown in Figure 1 , Figure 2As shown, the first liquid outlet sub-pipe, the second liquid outlet sub-pipe, the heat exchanger 118 and the first liquid outlet main pipe 111 are further included, the heat exchanger 118 is adapted to be arranged in the cooling tower 5, the first liquid outlet sub-pipe is in communication with the first reactor shield cooling water assembly 107 and the first liquid outlet main pipe 111 respectively, the fourth valve 109 is arranged on the first liquid outlet sub-pipe, the second liquid outlet sub-pipe is in communication with the first steam generator cabin shield cooling water assembly 108 and the first liquid outlet main pipe 111 respectively, the fifth valve 110 is arranged on the second liquid outlet sub-pipe, one end of the first liquid outlet main pipe 111, which is away from the first liquid outlet sub-pipe, is in communication with the heat exchanger 118, and the liquid outlet end of the heat exchanger 118 is in communication with the first liquid inlet main pipe 101. The cooling liquid in the first liquid outlet sub-pipe and the second liquid outlet sub-pipe, which is heated, is transported to the heat exchanger 118 in the cooling tower 5 through the first liquid outlet main pipe 111, and the cooling liquid is re-cooled by the heat exchanger 118, and the re-cooled cooling liquid enters the first liquid inlet main pipe 101.

[0035] In one embodiment, as shown in Figure 1 、 Figure 2 Further including the residual heat removal assembly 119, the support cooling assembly, the first liquid inlet branch pipe, the first liquid outlet branch pipe, the second liquid inlet branch pipe and the second liquid outlet branch pipe, the first liquid inlet branch pipe is connected with the residual heat removal assembly 119 and the first liquid inlet sub-pipe 103 respectively, the first liquid outlet branch pipe is connected with the residual heat removal assembly 119 and the first liquid outlet main pipe 111 respectively, the sixth valve 112 is arranged on the first liquid inlet branch pipe, and the ninth valve 116 is arranged on the first liquid outlet branch pipe; the second liquid inlet branch pipe is connected with the support cooling assembly 120 and the first liquid inlet sub-pipe 103 respectively, the second liquid outlet branch pipe is connected with the support cooling assembly 120 and the first liquid outlet main pipe 111 respectively, the seventh valve 113 is arranged on the second liquid outlet branch pipe, and the tenth valve 117 is arranged on the second liquid outlet branch pipe. In this embodiment, as shown in Figure 1 、 Figure 2 The residual heat removal assembly 119 and the support cooling assembly are arranged in the reactor pressure vessel 3, and the support cooling assembly is used for the support leg of the reactor pressure vessel 3, so that the cooling liquid enters the residual heat removal assembly 119 and the support cooling assembly.

[0036] In this embodiment, as shown in Figure 1 、 Figure 2As shown, the first circulating pump 209 is located on the liquid inlet circulating pipeline 201 between the communication of the first circulating pump 209 and the communication of the second circulating pump 212, and the thirteenth circulating valve is arranged on the liquid inlet circulating pipeline 201; the first circulating pump 209 is located on the liquid outlet circulating pipeline 202 between the communication of the first circulating pump 209 and the communication of the second circulating pump 212, and the fourteenth circulating valve is arranged on the liquid outlet circulating pipeline 202; the second circulating pump 212 is located on the liquid inlet circulating pipeline 201 between the communication of the second circulating pump 212 and the communication of the third circulating pump 213, and the fifteenth circulating valve is arranged on the liquid inlet circulating pipeline 201; the second circulating pump 212 is located on the liquid outlet circulating pipeline 202 between the communication of the second circulating pump 212 and the communication of the third circulating pump 213, and the sixteenth circulating valve is arranged on the liquid outlet circulating pipeline 202.

[0037] In the embodiment, as shown in Figure 1 , Figure 2 As shown, the first liquid outlet pipeline is provided with a first expansion tank 6, and the first expansion tank 6 is provided with a safety valve 10; the liquid inlet circulating pipeline 201 is provided with a second expansion tank, and the cooling liquid in the liquid inlet circulating pipeline 201 is also supplied to the device cooling water 8 / the plant water heat exchanger 118 and the device cooling water system user 9; the first liquid outlet main pipeline 111 and the first liquid inlet branch pipeline 103 are provided with a backwashing pipeline 114, and the backwashing pipeline 114 is provided with an eighth valve 115; the first liquid inlet branch pipeline 103, the second liquid inlet branch pipeline 104, the first liquid inlet branch pipeline and the second liquid inlet branch pipeline are respectively provided with flow regulating valves.

[0038] A use method of a high-temperature gas cooled reactor comprehensive cooling system, comprising the following steps: (1) When the first cooling subsystem 1 is in a passive state (no external kinetic energy is required), the first circulating valve 203 and the second circulating valve 204 are closed (the remaining circulating valves are closed), the first valve 102, the second valve 105, the third valve 106, the fourth valve 109, the fifth valve 110, the sixth valve 112, the seventh valve 113, the ninth valve 116 and the tenth valve 117 are opened (the eighth valve 115 is closed), so that the cooling liquid of the heat exchanger 118 enters into the first liquid inlet main pipeline 101 after being cooled, enters into the first reactor shield cooling water assembly 107 through the first liquid inlet branch pipeline 103, enters into the first steam generator cabin shield cooling water assembly 108 through the second liquid inlet branch pipeline 104, enters into the residual heat removal assembly 119 through the first liquid inlet branch pipeline, and enters into the support cooling assembly 120 through the second liquid inlet branch pipeline, after heat exchange, the first liquid outlet branch pipeline, the second liquid outlet branch pipeline, the first liquid outlet branch pipeline and the second liquid outlet branch pipeline are converged in the first liquid outlet main pipeline 111, and then flow into the heat exchanger 118 through the first liquid outlet main pipeline 111, thereby realizing passive operation; (2) When the first cooling subsystem 1 is in the active state (external power is required), the first valve 102 is closed, the first circulating valve 203, the second circulating valve 204, the fifth circulating valve 210, and the sixth circulating valve 211 (the remaining circulating valves are closed) are opened, the second valve 105, the third valve 106, the fourth valve 109, the fifth valve 110, the sixth valve 112, the seventh valve 113, the ninth valve 116, and the tenth valve 117 (the eighth valve 115 is closed) are opened, the first circulating pump 209 is started, and the cooling liquid flowing out of the liquid inlet circulating pipeline 201 enters the first circulating pump 209 in turn through the liquid inlet circulating pipeline 201, the first circulating branch, and then enters the second circulating branch, the liquid outlet circulating pipeline 202, and the liquid inlet circulating pipeline 201 in turn, and is branched from the liquid inlet circulating pipeline 201 to the first reactor shielding cooling water assembly 107, the first steam generator cabin shielding cooling water assembly 108, the residual heat removal assembly 119, and the support cooling assembly 120, and after heat exchange, the first liquid outlet sub-pipeline, the second liquid outlet sub-pipeline, the first liquid outlet branch, and the second liquid outlet branch are merged into the first liquid outlet main pipeline 111, and then the first liquid outlet main pipeline 111 flows into the heat exchanger 118, thereby realizing active operation; (3) When the circulating pump needs to be replaced, for example, the first circulating pump 209 is not used, and the second circulating pump 212 is used, the fifth circulating valve 210 and the sixth circulating valve 211 are closed, the first circulating valve 203, the second circulating valve 204, the seventh circulating valve, the eighth circulating valve, the thirteenth circulating valve, and the fourteenth circulating valve are opened, the circulating power is provided by the second circulating pump 212, the remaining circulating pumps can be used, and double-pump or even triple-pump operation can be performed; (4) When providing cooling liquid for users or factories, the corresponding circulating valves are opened, and the power is provided by a circulating pump in the circulating pump group; (5) When the second cooling subsystem needs to be in the passive state, the third circulating valve 206 and the fourth circulating valve 208 are closed, and when the second cooling subsystem needs to be in the active state, the third circulating valve 206 and the fourth circulating valve 208 are opened, and then the structure of the circulating pump group is matched to realize circulation.

[0039] The cooling circulating device 2 and the high-temperature gas cooled reactor comprehensive cooling system have the following advantages: (1) only corresponding pipelines and circulating pumps are arranged on the side of the first liquid inlet main pipeline 101, and a first valve 102 is arranged on the first liquid inlet main pipeline 101, so that the switching between the active state and the passive state of the first liquid inlet main pipeline 101 is realized, the pipeline layout is simplified, and the corresponding cost is reduced; (2) the same set of cooling circulating devices 2 provides circulating kinetic energy for at least two groups of cooling subsystems, and the state of “one group of cooling subsystems in the active state + one group of cooling subsystems in the passive state” can also be realized, and the cooling liquid can also be provided for the device cooling water 8 / plant water heat exchanger 118 and the device cooling water system user 9, so that the system has high integration, the number of devices and the complexity of pipelines are reduced, the construction and maintenance costs of the system are reduced, and the reliability and maintainability of the system are improved; (3) the waste heat and the reactor pressure vessel 3 support and shielding structure are cooperatively cooled, the distribution and flow path of the coolant are optimized, the utilization efficiency of the coolant is improved, and the reactor can be effectively cooled under various working conditions; (4) the four circulating pumps can realize one running and three backups, one running and one backup, one running and two backups (another one is under repair), or one running, one backup and two repairs, so that the circulating pump configuration and utilization of the device cooling water 8 system are optimized, and the system operation reliability is improved; (5) an effective cooperative working mechanism is realized, the cooling resources are optimally configured, the situation that some systems are over-cooled and some systems are under-cooled is avoided, and the overall cooling effect of the reactor is improved.

[0040] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A cooling circulation device, characterized in that, include: Liquid inlet circulation pipeline (201); Liquid outlet circulation pipeline (202); A circulating pump assembly is provided between the inlet circulating pipe (201) and the outlet circulating pipe (202). One end of the inlet circulating pipe (201) is adapted to be connected to the first main inlet pipe (101), and one end of the outlet circulating pipe (202) is adapted to be connected to the first main inlet pipe (101). Coolant flows in the first main inlet pipe (101). A first main inlet pipe (101) between the inlet circulating pipe (201) and the outlet circulating pipe (202) is provided with a first... A valve (102) is provided. The connection between the liquid inlet circulation pipeline (201) and the first liquid inlet main pipeline (101) is located upstream of the connection between the liquid outlet circulation pipeline (202) and the first liquid inlet main pipeline (101). A first circulation valve (203) is provided on the liquid inlet circulation pipeline (201) between the first liquid inlet main pipeline (101) and the circulation pump group. A second circulation valve (204) is provided on the liquid outlet circulation pipeline (202) between the first liquid inlet main pipeline (101) and the circulation pump group.

2. The cooling circulation device according to claim 1, characterized in that, It also includes an inlet circulation branch pipe (205) and an outlet circulation branch pipe (207). One end of the inlet circulation branch pipe (205) is connected to the inlet circulation pipe (201), and the other end is adapted to be connected to the second inlet main pipe. One end of the outlet circulation branch pipe (207) is connected to the outlet circulation pipe (202), and the other end is adapted to be connected to the second inlet main pipe. A third circulation valve (206) is provided on the inlet branch pipe, and a fourth circulation valve (208) is provided on the outlet branch pipe.

3. The cooling circulation device according to claim 1, characterized in that, The end of the liquid inlet circulation pipe (201) away from the first liquid inlet main pipe (101) is adapted to be connected to the liquid inlet end of the user's cooling system, and the end of the liquid outlet circulation pipe (202) away from the first liquid inlet main pipe (101) is adapted to be connected to the liquid outlet end of the user's cooling system.

4. The cooling circulation device according to claim 1, characterized in that, The circulating pump assembly includes a first circulating pump (209), a second circulating pump (212), and a third circulating pump (213), and also includes a first circulating branch pipe, a second circulating branch pipe, a third circulating branch pipe, a fourth circulating branch pipe, a fifth circulating branch pipe, and a sixth circulating branch pipe. The first circulating pump (209) is connected to the inlet circulating pipeline (201) through the first circulating branch pipe, and a fifth circulating valve (210) is provided on the first circulating branch pipe. The first circulating pump (209) is connected to the outlet circulating pipeline (202) through the second circulating branch pipe, and a sixth circulating valve (211) is provided on the second circulating branch pipe. The second circulating pump (212) is connected to the outlet circulating pipeline (202) through the third circulating branch pipe. The inlet circulation pipeline (201) is connected, and the third circulation branch pipe is equipped with a seventh circulation valve. The second circulation pump (212) is connected to the outlet circulation pipeline (202) through the fourth circulation branch pipe, and the fourth circulation branch pipe is equipped with an eighth circulation valve. The third circulation pump (213) is connected to the inlet circulation pipeline (201) through the fifth circulation branch pipe, and the fifth circulation branch pipe is equipped with a ninth circulation valve. The third circulation pump (213) is connected to the outlet circulation pipeline (202) through the sixth circulation branch pipe, and the sixth circulation branch pipe is equipped with a tenth circulation valve. The first circulation pump (209) and the second circulation pump (212) are backups for each other.

5. A high-temperature gas-cooled reactor integrated cooling system, characterized in that, Includes the cooling circulation device (2) as described in any one of claims 1-4.

6. The integrated cooling system for a high-temperature gas-cooled reactor according to claim 5, characterized in that, It also includes at least two cooling subsystems, including a first cooling subsystem (1) and a second cooling subsystem. The first cooling subsystem (1) includes a first liquid inlet main pipe (101), and the second cooling subsystem includes a second liquid inlet main pipe.

7. The integrated cooling system for a high-temperature gas-cooled reactor according to claim 6, characterized in that, The first cooling subsystem (1) includes a first liquid inlet branch pipe (103), a second liquid inlet branch pipe (104), a first reactor shielded cooling water system and a first steam generator compartment shielded cooling water assembly (108). One end of the first liquid inlet branch pipe (103) is connected to the first liquid inlet main pipe (101) and the other end is connected to the first reactor shielded cooling water assembly (107). One end of the second liquid inlet branch pipe (104) is connected to the first liquid inlet main pipe (101) and the other end is connected to the first steam generator compartment shielded cooling water assembly (108). A second valve (105) is provided on the first liquid inlet branch pipe (103) and a third valve (106) is provided on the second liquid inlet branch pipe (104).

8. The integrated cooling system for a high-temperature gas-cooled reactor according to claim 7, characterized in that, It also includes a first liquid outlet branch line, a second liquid outlet branch line, a heat exchanger (118) and a first liquid outlet main line (111). The heat exchanger (118) is adapted to be installed in the cooling tower (5). The first liquid outlet branch line is connected to the first reactor shield cooling water assembly (107) and the first liquid outlet main line (111) respectively. A fourth valve (109) is provided on the first liquid outlet branch line. The second liquid outlet branch line is connected to the first steam generator compartment shield cooling water assembly (108) and the first liquid outlet main line (111) respectively. A fifth valve (110) is provided on the second liquid outlet branch line. The end of the first liquid outlet main line (111) away from the first liquid outlet branch line is connected to the heat exchanger (118). The liquid outlet end of the heat exchanger (118) is connected to the first liquid inlet main line (101).

9. The integrated cooling system for a high-temperature gas-cooled reactor according to claim 8, characterized in that, It also includes a waste heat discharge assembly (119), a supporting cooling assembly, a first liquid inlet branch pipe, a first liquid outlet branch pipe, a second liquid inlet branch pipe, and a second liquid outlet branch pipe. The first liquid inlet branch pipe is connected to the waste heat discharge assembly (119) and the first liquid inlet sub-pipe (103), and the first liquid outlet branch pipe is connected to the waste heat discharge assembly (119) and the first liquid outlet main pipe (111). The first liquid inlet branch pipe is equipped with a sixth valve (112), and the first liquid outlet branch pipe is equipped with a ninth valve (116). The second liquid inlet branch pipe is connected to the supporting cooling assembly (120) and the first liquid inlet sub-pipe (103), and the second liquid outlet branch pipe is connected to the supporting cooling assembly (120) and the first liquid outlet main pipe (111). The second liquid outlet branch pipe is equipped with a seventh valve (113), and the second liquid outlet branch pipe is equipped with a tenth valve (117).

10. A method of using a cooling circulation device, for using the cooling circulation device (2) according to claim 1, characterized in that, When in a passive state, the first valve (102) is opened and the first circulation valve (203) and the second circulation valve (204) are closed, allowing the coolant to flow through the first valve (102). When in an active state, the first valve (102) is closed and the first circulation valve (203) and the second circulation valve (204) are opened, allowing the coolant to flow back into the first inlet main pipeline (101) through the first circulation valve (203), the circulation pump, and the second circulation valve (204) in sequence, powered by the circulation pump.

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