WO2022135455A1 - 优化母管设计的安全注入系统 - Google Patents

优化母管设计的安全注入系统 Download PDF

Info

Publication number
WO2022135455A1
WO2022135455A1 PCT/CN2021/140384 CN2021140384W WO2022135455A1 WO 2022135455 A1 WO2022135455 A1 WO 2022135455A1 CN 2021140384 W CN2021140384 W CN 2021140384W WO 2022135455 A1 WO2022135455 A1 WO 2022135455A1
Authority
WO
WIPO (PCT)
Prior art keywords
safety injection
connecting pipeline
pipeline
containment
pressure
Prior art date
Application number
PCT/CN2021/140384
Other languages
English (en)
French (fr)
Inventor
王广飞
赵斌
陈彦霖
李嫦月
董业旻
赵侠
刘江
Original Assignee
中国核电工程有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中国核电工程有限公司 filed Critical 中国核电工程有限公司
Publication of WO2022135455A1 publication Critical patent/WO2022135455A1/zh

Links

Images

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
    • G21C15/18—Emergency cooling arrangements; Removing shut-down heat
    • G21C15/182—Emergency cooling arrangements; Removing shut-down heat comprising powered means, e.g. pumps
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
    • G21C15/02—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices
    • G21C15/14—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices from headers; from joints in ducts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Definitions

  • the present disclosure relates to, but is not limited to, the technical field of nuclear power safe injection.
  • the safety injection system is a special safety facility for the nuclear power plant.
  • the emergency cooling function of the core is completed to prevent the core from melting down and ensure the safety of the nuclear power plant.
  • the system is only used in the event of an accident at a nuclear power plant.
  • the main function of the waste heat removal system is to remove heat from the core and the reactor coolant system after initial cooling and depressurization by the steam generator during the shutdown of the power plant.
  • the present disclosure provides a safe injection system that optimizes the design of the parent pipe.
  • the present disclosure provides a safety injection system for optimizing the design of a parent pipe, including: a subsystem, and the subsystem includes:
  • the medium-pressure safety injection pump injection circuit includes: a first connection pipeline configured to pass injection water, a medium-pressure safety-injection pump arranged on the first connection pipeline, and the first connection pipeline and the medium-pressure safety-injection pump are arranged in outside the containment,
  • the injection circuit of the low-pressure safety injection pump includes: a second connection pipeline configured to pass injection water, a low-pressure safety injection pump arranged on the second connection pipeline, and the second connection pipeline and the low-pressure safety injection pump are arranged outside the containment shell , the first connecting pipeline and the second connecting pipeline are connected and merged outside the containment and then connected to the inside of the containment to extend into a third connecting pipeline, and the third connecting pipeline is connected with the pressure vessel or with the cold pipe section of the reactor coolant system .
  • FIG. 1 is a schematic structural diagram of a safety injection system for optimizing the design of a main pipe according to an embodiment of the present disclosure.
  • An embodiment of the present disclosure provides a safety injection system for optimizing the design of a parent pipe, including: a subsystem, and the subsystem includes:
  • the medium-pressure safety injection pump injection circuit includes: a first connection pipeline configured to pass injection water, a medium-pressure safety injection pump arranged on the first connection pipeline and configured to inject medium-pressure water, the first connection pipeline,
  • the medium pressure safety injection pump is arranged outside the containment, and the injection circuit of the medium pressure safety injection pump is configured to inject medium pressure water into the pressure vessel or the cold pipe section of the reactor coolant system for cooling in the event of a reactor water loss accident;
  • the injection circuit of the low-pressure safety injection pump includes: a second connection pipeline configured to pass injection water, a low-pressure safety injection pump disposed on the second connection pipeline and configured to inject low-pressure water, the second connection pipeline, the low-pressure safety injection pump
  • the pump is arranged outside the containment, the first connecting pipeline and the second connecting pipeline are connected and merged outside the containment and then inserted into the containment to extend into a third connecting pipeline, and the third connecting pipeline is connected with the pressure vessel or with the reactor
  • the cold pipe section of the coolant system is connected, and the low-pressure safety injection pump injection circuit is configured to inject low-pressure water into the pressure vessel or the cold pipe section of the reactor coolant system for cooling in the event of a reactor water loss accident.
  • the safety injection system for optimizing the design of the main pipe adopts a medium-pressure safety injection pump injection circuit and a low-pressure safety injection pump injection circuit to ensure the safety of the nuclear power plant in the event of an accident in the reactor.
  • This scheme optimizes the current
  • the safety injection system designed by the parent pipe is adopted in the power plant in service, which solves the problem of system failure caused by the rupture of any pipeline in the safety injection system, and improves the safety of the nuclear power plant.
  • the technical solution in this embodiment breaks any pipeline in the system. The normal operation of the system can still be guaranteed.
  • an embodiment of the present disclosure provides a safety injection system for optimizing the design of a parent pipe, including: a subsystem, and the subsystem includes:
  • the medium-pressure safety injection pump injection circuit includes: a first connection pipeline L2 configured to pass injection water, a medium-pressure safety injection pump C1 arranged on the first connection pipeline L2 and configured to inject medium-pressure water, the first The connecting pipeline L2 and the medium pressure safety injection pump C1 are set outside the containment C200, and the medium pressure safety injection pump injection circuit is configured to inject medium pressure water into the pressure vessel C7 or the cold pipe section of the reactor coolant system for cooling in the event of a reactor water loss accident ;
  • the injection circuit of the low-pressure safety injection pump includes: a second connection pipeline L9 configured to pass injection water, a low-pressure safety injection pump C2 configured to inject low-pressure water and disposed on the second connection pipeline L9, and the second connection pipeline L9.
  • the low-pressure safety injection pump C2 is arranged outside the containment shell C200.
  • the first connecting line L2 and the second connecting line L9 are connected and merged outside the containment shell C200 and then connected to the inside of the containment shell C200 to extend into a third connecting line.
  • the three connecting pipelines are connected with the pressure vessel C7 or with the cold pipe section of the reactor coolant system, and the low-pressure safety injection pump injection circuit is configured to inject low-pressure water into the pressure vessel C7 or the cold pipe section of the reactor coolant system for cooling in the event of a water loss accident in the reactor.
  • the pressure of the low-pressure water injected by the low-pressure safety injection pump C2 is lower than that of the medium-pressure water injected by the medium-pressure safety injection pump C1.
  • the safety injection system for optimizing the design of the main pipe also includes: a heat pipe section configured to flow out of a high-temperature fluid, a heat exchanger C3 configured for heat exchange, and a low-pressure safety injection pump C2 connected to the heat pipe section,
  • the second connecting pipeline L9 is provided with a heat exchanger C3, the heat exchanger C3 is located downstream of the low-pressure safety injection pump C2, the heat exchanger C3 is located outside the containment C200, and the heat pipe section is located in the containment.
  • the heat cools the high-temperature fluid flowing out of the heat pipe section, and then passes into the pressure vessel C7 or the cold pipe section of the reactor coolant system.
  • the safety injection system for optimizing the design of the main pipe also includes: an inner displacement material water tank C100 configured to provide cooling water, and the medium pressure safety injection pump C1 and the low pressure safety injection pump C2 are respectively connected with the inner displacement material water tank C100.
  • the internal displacement tank C100 is located in the containment C200.
  • the medium-pressure safety injection pump injection circuit in this embodiment further includes: a connecting pipeline L1, two ends of the connecting pipeline L1 are respectively connected to the internal displacement material water tank C100 and the medium-pressure safety injection pump C1, and the connecting pipeline L1 is connected to the An electric isolation valve V1 at the pump suction port is provided, and a check valve V5 and an electric valve V7 are sequentially provided on the first connecting pipeline L2 along the direction of the medium pressure safety injection pump C1 leading to its downstream.
  • the electric valve V7 is in a normally open state, and the electric valve V7 is normally open, which is beneficial for the medium pressure safety pump injection circuit to pass the medium pressure water into the containment shell C200 for cooling.
  • the injection circuit of the low-pressure safety injection pump in this embodiment further includes: a connecting pipeline L6, a connecting pipeline L7, and a connecting pipeline L8.
  • Pump C2 the connection pipeline L6 is provided with an electric isolation valve V2 for the pump suction inlet; the two ends of the connection pipeline L7 are respectively connected to the heat pipe section H1 and the low pressure safety injection pump C2, and the connection pipeline L7 is provided with an electric isolation valve for the pump suction inlet V3; both ends of the connecting pipeline L8 are respectively connected to the heat pipe section H2 and the low-pressure safety injection pump C2, and the connecting pipeline L8 is provided with an electric isolation valve V4 for the pump suction port.
  • a check valve V6, an electric valve V8, and a heat exchanger C3 are sequentially provided on the second connecting line L9 along the direction in which the low-pressure ambulance pump C2 leads to its downstream.
  • the electric valve V8 is in the normally open state, and the electric valve V8 is normally open, which is beneficial for the injection circuit of the low-pressure safety pump to pass low-pressure water into the containment shell C200 for cooling.
  • the water in the internal displacement tank C100 can not only be injected into the containment C200 through the injection circuit of the medium pressure safety injection pump, but also into the containment C200 through the injection circuit of the low pressure safety injection pump.
  • the electric isolation valve V1 and the electric isolation valve V2 are normally open, and the electric isolation valve V3 and the electric isolation valve V4 are in the closed position.
  • the electric isolation valve V2 is closed, and the electric isolation valve V3 and the electric isolation valve V4 are opened.
  • the subsystems are at least two columns, and the third connecting pipelines of the subsystems in each column are connected and merged in the containment and then connected to the pressure vessel C7 in the containment or the cold pipe section of the reactor coolant system.
  • Each subsystem is independent, does not affect each other, and serves as a backup for each other.
  • first connecting pipeline L2 is divided into at least two first sub-connecting pipelines
  • second connecting pipeline L9 is divided into at least two second sub-connecting pipelines
  • the first sub-connecting pipeline is connected with the second sub-connecting pipeline.
  • the pipelines are connected in a one-to-one correspondence and merged into the containment shell C200 to extend into a third connecting pipeline.
  • the number of the first sub-connecting pipeline, the second sub-connecting pipeline, and the third connecting pipeline is the same.
  • the safety injection system for optimizing the design of the main pipe further includes: a first regulating valve configured to adjust the flow, and a first check valve configured to prevent reverse flow, on the first sub-connecting pipeline along the route from the middle.
  • a first regulating valve and a first check valve are sequentially arranged in the direction from the pressure-safety injection pump to the containment shell;
  • the system also includes: a second regulating valve configured to adjust the flow, a second check valve configured to prevent reverse flow, and the second sub-connecting pipeline is sequentially arranged along the direction from the low-pressure ambulance pump to the containment.
  • the second regulating valve, the second check valve is sequentially arranged along the direction from the low-pressure ambulance pump to the containment.
  • the third connecting pipeline outside the containment C200 is provided with a third electric isolation valve configured as a control switch, and the third connecting pipeline in the containment C200 is provided with a third electric isolation valve.
  • a third check valve block configured to prevent reverse flow.
  • the third check valve group includes a fifth check valve and a sixth check valve.
  • first connecting pipeline L2 in this embodiment is divided into a first sub-connecting pipeline L3, a first sub-connecting pipeline L4, and a first sub-connecting pipeline L5, and the second connecting pipeline L9 is divided into a second connecting pipeline L9.
  • the first sub-connecting pipeline L3 is sequentially provided with a first regulating valve V15 and a first check valve V18
  • the second sub-connecting pipeline L4 is sequentially provided with a first regulating valve V16
  • the first check valve V19 and the second sub-connecting pipeline L5 are sequentially provided with a first regulating valve V17 and a first check valve V20
  • the second sub-connecting pipeline L10 are sequentially provided with a second regulating valve V9 and a second regulating valve V9.
  • Check valve V12, a second regulating valve V10 and a second check valve V13 are arranged on the second sub-connecting pipeline L11 in sequence, and a second regulating valve V11 and a second check valve are arranged on the second sub-connecting pipeline L12 in sequence.
  • connection pipeline L15 is provided with a third electric isolation valve V23, and the third electric isolation valve V23 is in a normally open state.
  • the first sub-connecting pipeline L4 and the second sub-connecting pipeline L11 are connected to the confluence point P2, the connection is merged into a connecting pipeline L14, and the third connecting pipeline L20 extends into the containment shell C200.
  • the connection pipeline L14 is provided with a third electric isolation valve V22, and the third electric isolation valve V22 is in a normally open state.
  • the first sub-connecting pipeline L5 and the second sub-connecting pipeline L12 are connected to the confluence point P3, the connection is merged into a connecting pipeline L13, and a third connecting pipeline L19 extends into the containment shell C200.
  • the connection pipeline L13 is provided with a third electric isolation valve V21, and the third electric isolation valve V21 is in a normally open state.
  • the safety injection system of the optimized main pipe design also includes:
  • the safety injection tank injection circuit includes: a safety injection tank configured for water replenishment, and a fourth connection pipeline.
  • the safety injection tank is located in the containment shell, one end of the fourth connection pipeline is connected to the safety injection tank, and the other end of the fourth connection pipeline is connected to the safety injection tank.
  • One end is connected and merged with the third connecting pipeline and then connected to the pressure vessel C7 in the containment vessel C200 or the cold pipe section of the reactor coolant system.
  • a fifth check valve for preventing reverse flow is provided on the third connecting pipeline downstream of the third connecting pipeline from the point where the other end of the fourth connecting pipeline connects with the third connecting pipeline and is configured to prevent reverse flow.
  • the safety injection tank injection circuit is at least two, and the number of safety injection tank injection circuits is the same as the number of the first sub-connecting pipelines in each column of subsystems, so that each A safety injection box is correspondingly connected to the third connecting pipeline.
  • the safety injection system for optimizing the design of the main pipe further includes: a fourth electric isolation valve configured as a control switch, and a fourth check valve configured to prevent reverse flow, on the fourth connecting pipeline along the safety line.
  • a fourth electric isolation valve and a fourth check valve are sequentially arranged in the direction leading to the downstream of the injection tank, and the fourth electric isolation valve and the fourth check valve are in a normally open state.
  • the injection circuit of the safety injection box in this embodiment is three rows.
  • the injection circuit of the safety injection tank in the first row includes: the safety injection tank C4 and the fourth connection pipeline L16.
  • the fourth connection pipeline L16 runs along the upstream direction from the upstream In the downstream direction, a fourth electric isolation valve V53 and a fourth check valve V56 are arranged in sequence, and the fourth connecting pipeline L16 and the third connecting pipeline L21 are connected to the confluence point P6.
  • the safety injection box C4 is filled with nitrogen as a protective gas.
  • the injection circuit of the first column of the safety injection tank includes: the safety injection tank C5 and the fourth connection pipeline L17.
  • the fourth connection pipeline L17 is sequentially provided with a fourth electric isolation valve V54 and a fourth stop along the direction from upstream to downstream.
  • the return valve V57, the fourth connecting pipe L17 and the third connecting pipe L20 are connected to the confluence point P5.
  • the safety injection box C5 is filled with nitrogen as a protective gas.
  • the injection circuit of the first column of the safety injection box includes: the safety injection box C6 and the fourth connection pipeline L18.
  • the fourth connection pipeline L18 is sequentially provided with a fourth electric isolation valve V55 and a fourth stop along the direction from upstream to downstream.
  • the return valve V58, the fourth connecting pipe L18 and the third connecting pipe L19 are connected to the confluence point P4.
  • the safety injection box C6 is filled with nitrogen as a protective gas.
  • two fifth check valves are sequentially arranged along the direction from the upstream to the downstream, which are the fifth check valves respectively.
  • a sixth check valve V30 is provided on the third connecting line L19 from the confluence point P4 to the pressure vessel C7.
  • a sixth check valve V31 is provided on the third connecting pipeline L20 from the confluence point P5 to the pressure vessel C7.
  • a sixth check valve V32 is provided on the third connecting line L21 from the confluence point P6 to the pressure vessel C7.
  • the subsystems in this embodiment are two-column subsystems, namely the first-column subsystem A and the second-column subsystem B.
  • the first-column subsystem A and the second-column subsystem B have the same structure, and the first-column subsystem A has the same structure as the second-column subsystem B.
  • the three connecting pipelines and the third connecting pipeline of the second column of subsystem B are connected and merged in the containment vessel C200 and then injected into the pressure vessel C7.
  • the three third connection pipelines of the first column of subsystem A are respectively a third connection pipeline L19, a third connection pipeline L20, and a third connection pipeline L21.
  • the three third connecting pipelines of the second column of subsystem B are respectively a third connecting pipeline L30, a third connecting pipeline L31, and a third connecting pipeline L32.
  • the third connecting line L30 and the third connecting line L21 are connected to the confluence point P6, the third connecting line L31 and the third connecting line L20 are connected to the converging point P5, and the third connecting line L32 and the third connecting line L19 is connected to confluence point P4, which reduces the number of access points on the piping leading to pressure vessel C7, thereby reducing the possibility of pipe breakage.
  • the safety injection system for optimizing the design of the main pipe in this embodiment is composed of subsystems that independently complete the system functions, and each part that can independently complete the system functions is called a column.
  • the first column of subsystems A and the second column of subsystems B are independently configured outside the containment C200, and the injection circuits of the two columns of subsystems are merged after entering the containment C200.
  • the number of columns of subsystems can be adjusted according to the number of loops in the reactor coolant system and the configuration of the nuclear power plant support systems. In order to meet the relevant design requirements of nuclear power plants (initiating event impact, single fault design, etc.), subsystems with different numbers of columns such as 2, 3 or 4 columns can be set up.
  • a rupture occurs in any pipeline position in the safety injection system of the optimized main pipe design in this embodiment, which does not affect the operation of other pipelines.
  • the medium-pressure safety injection pump C1 and the low-pressure safety injection pump C2 can still work normally, ensuring that reliability of the entire system.
  • the injection circuits of the safety injection pumps in each column are independent of each other, so as to satisfy the influence of the superimposition of the single fault on the origination time.
  • the main advantage of the safety injection system of the optimized main pipe design in this embodiment is that: the outlet of each medium-pressure safety injection pump C1 and low-pressure safety injection pump C2 in each row is divided into three branch pipes, and then merged, each row of safety injection pump C2 has three branch pipes.
  • the injection circuits are completely independent.
  • water can be supplied to the main circuit through the medium-pressure safety injection pump C1 when the main circuit pressure is high, and when the pressure is reduced to the injection pressure of the safety injection tank
  • the safety shell C200 The water in the internal refueling tank C100 is injected into the main circuit to ensure the safety of the reactor; at the same time, the heat of the core is exported out of the containment through the heat exchanger C3 at the outlet of the low-pressure safety injection pump C2, so as to control the containment C200 after the accident.
  • the heat of the core can be exported through the injection pump C2 and the heat exchanger C3 at the outlet, so as to realize the normal waste heat discharge function.
  • the safety injection system of the optimized main pipe design is also taken into account in this solution, which also takes into account the function of the normal waste heat discharge system of the nuclear power plant.
  • the design scheme adopts the injection circuit of the medium pressure safety injection pump, the safety injection tank injection circuit and the low pressure safety injection pump injection circuit, which can ensure the safety of the nuclear power plant in the event of an accident in the reactor.
  • the designed safety injection system solves the problem of system failure caused by any pipe rupture in the safety injection system, and improves the safety of the nuclear power plant.
  • it also takes into account the function of the waste heat discharge system when the reactor starts and stops, which greatly saves the investment of the nuclear power plant and improves the economy of the nuclear power plant.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Structure Of Emergency Protection For Nuclear Reactors (AREA)

Abstract

一种优化母管设计的安全注入系统，包括：子系统（A，B），子系统（A，B）包括：中压安注泵（C1）注入回路，包括：配置为通入注入水的第一连接管路（L2）、中压安注泵（C1）；低压安注泵（C2）注入回路，包括：配置为通入注入水的第二连接管路（L9）、低压安注泵（C2），第一连接管路（L2）与第二连接管路（L9）在安全壳（C200）外连接合并后接入安全壳（C200）内延伸为第三连接管路（L19，L20，L21，L30，L31，L32）。

Description

优化母管设计的安全注入系统
本公开要求申请日为2020年12月23日、申请号为CN 202011540809.5、名称为“优化母管设计的安全注入系统”的中国专利申请的优先权，该申请的全部内容通过引用结合在本公开中。
技术领域
本公开涉及但不限于核电安全注入技术领域。
背景技术
安全注入系统属于核电厂专设安全设施，在反应堆冷却剂系统发生失水事故或主蒸汽系统发生管道破裂等事故时，完成堆芯应急冷却功能，防止堆芯熔毁，保证核电厂的安全，该系统只有在核电厂发生事故时使用。余热排出系统主要功能是在电厂停堆期间，在经蒸汽发生器初步冷却和降压后，从堆芯和反应堆冷却剂系统排出热量。
部分在役电厂安全注入及余热排出设计方案中设计了两套独立的系统，两套系统在运行上并无冲突，同时两套系统使用率极低，因此造成了在一定程度降低了核电厂经济性。同时安全注入系统采用了母管设计，虽然能够满足法规设计要求，但仍遭到了同行业竞争对手质疑，同时在出口时也遭到了意向国家安全部门质疑。
发明内容
本公开提供一种优化母管设计的安全注入系统。
本公开提供一种优化母管设计的安全注入系统，包括：子系统，子系统包括：
中压安注泵注入回路，包括：配置为通入注入水的第一连接管路、设置于第一连接管路上的中压安注泵，第一连接管路、中压安注泵设置于安全壳外，
低压安注泵注入回路，包括：配置为通入注入水的第二连接管路、设置于第二连接管路上的低压安注泵，第二连接管路、低压安注泵设置于安全壳外，第一连接管路与第二连接管路在安全壳外连接合并后接入安全壳内延伸为第三连接管路，第三连接管路与压力容器连接或与反应堆冷却剂系统冷管段连接。
附图说明
图1是本公开一实施例中的优化母管设计的安全注入系统的结构示意图。
具体实施方式
为使本领域技术人员更好地理解本公开的技术方案，下面结合附图和具体实施方式对本公开作进一步详细描述。
下面详细描述本专利的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本专利，而不能理解为对本专利的限制。
本公开一实施例提供一种优化母管设计的安全注入系统，包括：子系统，子系统包括：
中压安注泵注入回路，包括：配置为通入注入水的第一连接管路、设置于第一连接管路上的配置为注入中压水的中压安注泵，第一连接管路、中压安注泵设置于安全壳外，中压安注泵注入回路配置为在反应堆失水事故时向压力容器或反应堆冷却剂系统冷管段注入中压水冷却；
低压安注泵注入回路，包括：配置为通入注入水的第二连接管路、设置于第二连接管路上的配置为注入低压水的低压安注泵，第二连接管路、低压安注泵设置于安全壳外，第一连接管路与第二连接管路在安全壳外连接合并后接入安全壳内延伸为第三连接管路，第三连接管路与压力容器连接或与反应堆冷却剂系统冷管 段连接，低压安注泵注入回路配置为在反应堆失水事故时向压力容器或反应堆冷却剂系统冷管段注入低压水冷却。
本实施例中的优化母管设计的安全注入系统，该设计方案采用了中压安注泵注入回路、低压安注泵注入回路，在反应堆发生事故时保证核电厂的安全，该方案优化了目前在役电厂中采用母管设计的安全注入系统，解决了安全注入系统中任意管道破裂导致系统失效的问题，提高了核电厂的安全，本实施例中的技术方案在系统中的任意管道破裂，仍能保证系统的正常工作。
如图1所示，本公开一实施例提供一种优化母管设计的安全注入系统，包括：子系统，子系统包括：
中压安注泵注入回路，包括：配置为通入注入水的第一连接管路L2、设置于第一连接管路L2上的配置为注入中压水的中压安注泵C1，第一连接管路L2、中压安注泵C1设置于安全壳C200外，中压安注泵注入回路配置为在反应堆失水事故时向压力容器C7或反应堆冷却剂系统冷管段内注入中压水冷却；
低压安注泵注入回路，包括：配置为通入注入水的第二连接管路L9、设置于第二连接管路L9上的配置为注入低压水的低压安注泵C2，第二连接管路L9、低压安注泵C2设置于安全壳C200外，第一连接管路L2与第二连接管路L9在安全壳C200外连接合并后接入安全壳C200内延伸为第三连接管路，第三连接管路与压力容器C7连接或与反应堆冷却剂系统冷管段连接，低压安注泵注入回路配置为在反应堆失水事故时向压力容器C7或反应堆冷却剂系统冷管段内注入低压水冷却。其中，低压安注泵C2注入的低压水的压力低于中压安注泵C1注入的中压水。
进一步地，所述的优化母管设计的安全注入系统，还包括：配置为温度高的流体流出的热管段、配置为换热的热交换器C3，低压安注泵C2与热管段连接，在第二连接管路L9上设置有热交换器C3，热交换器C3位于低压安注泵C2下游，热交换器C3位于安全壳C200外，热管段位于安全壳内，通过热交换器C3的换 热对由热管段流出的温度高的流体进行降温，再通入到压力容器C7或反应堆冷却剂系统冷管段。
进一步地，所述的优化母管设计的安全注入系统，还包括：配置为提供冷却水的内置换料水箱C100，中压安注泵C1、低压安注泵C2分别与内置换料水箱C100连接，内置换料水箱C100位于安全壳C200内。
具体的，本实施例中的中压安注泵注入回路还包括：连接管路L1，连接管路L1的两端分别连接内置换料水箱C100、中压安注泵C1，连接管路L1上设置有泵吸入口电动隔离阀V1，在第一连接管路L2上沿着中压安注泵C1通向其下游的方向上依次设置有止回阀V5、电动阀V7。电动阀V7为常开状态，电动阀V7常开有利于中压安全泵注入回路向安全壳C200内通入中压水冷却。
具体的，本实施例中的低压安注泵注入回路还包括：连接管路L6、连接管路L7、连接管路L8，连接管路L6的两端分别连接内置换料水箱C100、低压安注泵C2，连接管路L6上设置有泵吸入口电动隔离阀V2；连接管路L7的两端分别连接热管段H1、低压安注泵C2，连接管路L7上设置有泵吸入口电动隔离阀V3；连接管路L8的两端分别连接热管段H2、低压安注泵C2，连接管路L8上设置有泵吸入口电动隔离阀V4。在第二连接管路L9上沿着低压安注泵C2通向其下游的方向上依次设置有止回阀V6、电动阀V8、热交换器C3。电动阀V8为常开状态，电动阀V8常开有利于低压安全泵注入回路向安全壳C200内通入低压水冷却。内置换料水箱C100内的水不仅可以通过中压安注泵注入回路注入安全壳C200内，也可以通过低压安注泵注入回路注入安全壳C200内。
反应堆正常运行期间，电动隔离阀V1、电动隔离阀V2常开，电动隔离阀V3、电动隔离阀V4处于关闭位置。系统在余热排出模式下运行时，系统热水由热管段H1、热管段H2排出，电动隔离阀V2关闭，电动隔离阀V3、电动隔离阀V4打开。
设置两路分别与热管段H1、热管段H2连接的连接管路L7、 连接管路L8，可以在任一连接管路L7或连接管路L8破口时将破口和该列进行隔离，保证了系统在执行余热排出功能时满足始发事件叠加单一故障的影响。通过热交换器C3可将由热管段H1、热管段H2引出的冷却剂的热量排出。
进一步地，子系统至少为两列，各列子系统的第三连接管路在安全壳内连接合并后接入安全壳内压力容器C7或反应堆冷却剂系统冷管段。各个子系统独立，互不影响，且互为备用。
进一步地，第一连接管路L2分出至少两条第一子连接管路，第二连接管路L9分出至少两条第二子连接管路，第一子连接管路与第二子连接管路一一对应连接合并后接入安全壳C200内延伸为第三连接管路，第一子连接管路、第二子连接管路、第三连接管路数量相同。
进一步地，所述的优化母管设计的安全注入系统，还包括：配置为调节流量的第一调节阀、配置为阻止逆流的第一止回阀，在第一子连接管路上沿着由中压安注泵到安全壳内的方向依次设置有第一调节阀、第一止回阀；
所述系统还包括：配置为调节流量的第二调节阀、配置为阻止逆流的第二止回阀，在第二子连接管路上沿着由低压安注泵到安全壳内的方向依次设置有第二调节阀、第二止回阀。
进一步地，所述的优化母管设计的安全注入系统，安全壳C200外的第三连接管路上设置有配置为控制开关的第三电动隔离阀，安全壳C200内的第三连接管路上设置有配置为阻止逆流的第三止回阀组。第三止回阀组包括第五止回阀、第六止回阀。
具体的，本实施例中的第一连接管路L2分出第一子连接管路L3、第一子连接管路L4、第一子连接管路L5，第二连接管路L9分出第二子连接管路L10、第二子连接管路L11、第二子连接管路L12。沿着从上游到下游的方向，第一子连接管路L3上依次设置有第一调节阀V15、第一止回阀V18，第二子连接管路L4上依次设置有第一调节阀V16、第一止回阀V19，第二子连接管路L5上依次设置有第一调节阀V17、第一止回阀V20，第二子连接管路 L10上依次设置有第二调节阀V9、第二止回阀V12，第二子连接管路L11上依次设置有第二调节阀V10、第二止回阀V13，第二子连接管路L12上依次设置有第二调节阀V11、第二止回阀V14。
第一子连接管路L3与第二子连接管路L10连接到汇合点P1，连接合并为连接管路L15，接入安全壳C200内延伸为第三连接管路L21。其中，连接管路L15上设置有第三电动隔离阀V23，第三电动隔离阀V23处于常开状态。
第一子连接管路L4与第二子连接管路L11连接到汇合点P2，连接合并为连接管路L14，接入安全壳C200内延伸为第三连接管路L20。其中，连接管路L14上设置有第三电动隔离阀V22，第三电动隔离阀V22处于常开状态。
第一子连接管路L5与第二子连接管路L12连接到汇合点P3，连接合并为连接管路L13，接入安全壳C200内延伸为第三连接管路L19。其中，连接管路L13上设置有第三电动隔离阀V21，第三电动隔离阀V21处于常开状态。上述汇合接入，这样减少了通入压力容器C7的管道上的接入点的数量，从而减少了管道破损的可能。
进一步地，所述的优化母管设计的安全注入系统，还包括：
安注箱注入回路，包括：配置为补水的安注箱、第四连接管路，安注箱位于安全壳内，第四连接管路的一端与安注箱连接，第四连接管路的另外一端与第三连接管路连接合并后接入安全壳C200内压力容器C7或反应堆冷却剂系统冷管段。
进一步地，所述的优化母管设计的安全注入系统，从安全壳C200到第四连接管路的另外一端与第三连接管路连接汇合点处之间的第三连接管路上设置有配置为阻止逆流的第五止回阀，从第四连接管路的另外一端与第三连接管路连接汇合点处到第三连接管路的下游的第三连接管路上设置有配置为阻止逆流的第六止回阀。
进一步地，所述的优化母管设计的安全注入系统，安注箱注入回路至少为两路，安注箱注入回路的数量与每列子系统中的第 一子连接管路的数量相同，这样每条第三连接管路对对应连接有安注箱。
进一步地，所述的优化母管设计的安全注入系统，还包括：配置为控制开关的第四电动隔离阀、配置为阻止逆流的第四止回阀，在第四连接管路上沿着从安注箱通向其下游的方向上依次设置有第四电动隔离阀、第四止回阀，第四电动隔离阀、第四止回阀处于常开状态。
具体的，本实施例中的安注箱注入回路为三列，第一列安注箱注入回路包括：安注箱C4、第四连接管路L16，第四连接管路L16上沿着由上游到下游的方向依次设置有第四电动隔离阀V53、第四止回阀V56，第四连接管路L16与第三连接管路L21连接到汇合点P6。安注箱C4内充有氮气作为保护气体。
第一列安注箱注入回路包括：安注箱C5、第四连接管路L17，第四连接管路L17上沿着由上游到下游的方向依次设置有第四电动隔离阀V54、第四止回阀V57，第四连接管路L17与第三连接管L20连接到汇合点P5。安注箱C5内充有氮气作为保护气体。
第一列安注箱注入回路包括：安注箱C6、第四连接管路L18，第四连接管路L18上沿着由上游到下游的方向依次设置有第四电动隔离阀V55、第四止回阀V58，第四连接管路L18与第三连接管L19连接到汇合点P4。安注箱C6内充有氮气作为保护气体。
具体的，本实施例中，从安全壳C200到汇合点P4之间的第三连接管路L19上，沿着从上游到下游的方向依次设置有两个第五止回阀，分别为第五止回阀V24、第五止回阀V27。从汇合点P4到压力容器C7之间的第三连接管路L19上设置有第六止回阀V30。
从安全壳C200到汇合点P5之间的第三连接管路L20上，沿着从上游到下游的方向依次设置有两个第五止回阀，分别为第五止回阀V25、第五止回阀V28。从汇合点P5到压力容器C7之间的第三连接管路L20上设置有第六止回阀V31。
从安全壳C200到汇合点P6之间的第三连接管路L21上，沿 着从上游到下游的方向依次设置有两个第五止回阀，分别为第五止回阀V26、第五止回阀V29。从汇合点P6到压力容器C7之间的第三连接管路L21上设置有第六止回阀V32。
具体的，本实施例中的子系统为两列子系统，分别为第一列子系统A、第二列子系统B，第一列子系统A与第二列子系统B结构相同，第一列子系统A的第三连接管路与第二列子系统B的第三连接管路在安全壳C200内连接合并后注入压力容器C7。第一列子系统A的三路第三连接管路分别为第三连接管路L19、第三连接管路L20、第三连接管路L21。
第二列子系统B的三路第三连接管路分别为第三连接管路L30、第三连接管路L31、第三连接管路L32。
第三连接管路L30与第三连接管路L21连接到汇合点P6，第三连接管路L31与第三连接管路L20连接到汇合点P5，第三连接管路L32与第三连接管路L19连接到汇合点P4，这样减少了通入压力容器C7的管道上的接入点的数量，从而减少了管道破损的可能。
本实施例中的优化母管设计的安全注入系统由独立完成系统功能的子系统组成，每一个能够独立完成系统功能的部分称为一列。
第一列子系统A、第二列子系统B在安全壳C200外配置独立，两列子系统的注入回路在进入安全壳C200之后合并。子系统的列数可根据反应堆冷却剂系统环路数以及核电厂支持系统配置的不同进行调整。为满足核电厂相关设计要求(始发事件影响、单一故障设计等)，可以设置2列、3列或4列等不同列数的子系统。
本实施例中的优化母管设计的安全注入系统中的任意一条管路位置发生破口，不影响其它管路工作，中压安注泵C1、低压安注泵C2仍可正常工作，保证了整个系统的可靠性。各列中的安注泵注入回路之间相互独立，满足始发时间叠加单一故障的影响。
本实施例中的优化母管设计的安全注入系统的主要优点在 于：每列中的每台中压安注泵C1及低压安注泵C2出口各分出三条支管，然后汇合，各列安注泵注入回路之间完全独立，在发生诸如主回路破口的事故工况时，在主回路压力较高时可以通过中压安注泵C1向主回路补水，在压力降低至安注箱的注入压力时，通过安注箱向主回路注水，当压力降低至低压安注泵C2和中压安注泵C1的注入压头时，通过低压安注泵C2和中压安注泵C1将安全壳C200内部的内置换料水箱C100内的水注入主回路，从而保证反应堆的安全；同时通过低压安注泵C2出口的热交换器C3，将堆芯热量导出安全壳外，从而控制事故后安全壳C200内的压力和温度；在反应堆正常停堆时，可以通过安注泵C2及其出口的热交换器C3，将堆芯热量导出，从而实现正常余热排出功能。
本实施例中的优化母管设计的安全注入系统，同时该方案还兼顾了核电厂正常余热排出系统的功能。该设计方案采用了中压安注泵注入回路、安注箱注入回路和低压安注泵注入回路，能够在反应堆发生事故时保证核电厂的安全，该方案优化了目前在役电厂中采用母管设计的安全注入系统，解决了安全注入系统中任意管道破裂导致系统失效的问题，提高了核电厂的安全。同时由于还兼顾了反应堆启停堆时的余热排出系统功能，大大节省了核电厂的投资，提高了核电厂的经济性。
可以理解的是，以上实施方式仅仅是为了说明本公开的原理而采用的示例性实施方式，然而本公开并不局限于此。对于本领域内的普通技术人员而言，在不脱离本公开的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本公开的保护范围。

Claims (11)

  1. 一种优化母管设计的安全注入系统，包括：子系统，子系统包括：
    中压安注泵注入回路，包括：配置为通入注入水的第一连接管路、设置于第一连接管路上的配置为注入中压水的中压安注泵，第一连接管路、中压安注泵设置于安全壳外，中压安注泵注入回路配置为在反应堆失水事故时向压力容器或反应堆冷却剂系统冷管段注入中压水冷却；
    低压安注泵注入回路，包括：配置为通入注入水的第二连接管路、设置于第二连接管路上的配置为注入低压水的低压安注泵，第二连接管路、低压安注泵设置于安全壳外，第一连接管路与第二连接管路在安全壳外连接合并后接入安全壳内延伸为第三连接管路，第三连接管路与压力容器连接或与反应堆冷却剂系统冷管段连接，低压安注泵注入回路配置为在反应堆失水事故时向压力容器或反应堆冷却剂系统冷管段注入低压水冷却。
  2. 如权利要求1所述的优化母管设计的安全注入系统，其中，子系统至少为两列，各列子系统的第三连接管路在安全壳内连接合并后接入安全壳内压力容器或反应堆冷却剂系统冷管段。
  3. 如权利要求1或2所述的优化母管设计的安全注入系统，其中，第一连接管路分出至少两条第一子连接管路，第二连接管路分出至少两条第二子连接管路，第一子连接管路与第二子连接管路一一对应连接合并后接入安全壳内延伸为第三连接管路，第一子连接管路、第二子连接管路、第三连接管路数量相同。
  4. 如权利要求3所述的优化母管设计的安全注入系统，其中，还包括：配置为调节流量的第一调节阀、配置为阻止逆流的第一止回阀，在第一子连接管路上沿着由中压安注泵到安全壳内的方 向依次设置有第一调节阀、第一止回阀；
    所述系统还包括：配置为调节流量的第二调节阀、配置为阻止逆流的第二止回阀，在第二子连接管路上沿着由低压安注泵到安全壳内的方向依次设置有第二调节阀、第二止回阀。
  5. 如权利要求3所述的优化母管设计的安全注入系统，其中，还包括：
    安注箱注入回路，包括：配置为补水的安注箱、第四连接管路，安注箱位于安全壳内，第四连接管路的一端与安注箱连接，第四连接管路的另外一端与第三连接管路连接合并后接入安全壳内压力容器或反应堆冷却剂系统冷管段。
  6. 如权利要求5所述的优化母管设计的安全注入系统，其中，从安全壳到第四连接管路的另外一端与第三连接管路连接汇合点处之间的第三连接管路上设置有配置为阻止逆流的第五止回阀，从第四连接管路的另外一端与第三连接管路连接汇合点处到第三连接管路的下游的第三连接管路上设置有配置为阻止逆流的第六止回阀。
  7. 如权利要求5所述的优化母管设计的安全注入系统，其中，安注箱注入回路至少为两路，安注箱注入回路的数量与每列子系统中的第一子连接管路的数量相同。
  8. 如权利要求5所述的优化母管设计的安全注入系统，其中，还包括：配置为控制开关的第四电动隔离阀、配置为阻止逆流的第四止回阀，在第四连接管路上沿着从安注箱通向其下游的方向上依次设置有第四电动隔离阀、第四止回阀。
  9. 如权利要求1、2、4、5任意一项所述的优化母管设计的安全注入系统，其中，安全壳外的第三连接管路上设置有配置为 控制开关的第三电动隔离阀，安全壳内的第三连接管路上设置有配置为阻止逆流的第三止回阀组。
  10. 如权利要求1所述的优化母管设计的安全注入系统，其中，还包括：配置为提供冷却水的内置换料水箱，中压安注泵、低压安注泵分别与内置换料水箱连接，内置换料水箱位于安全壳内。
  11. 如权利要求1、2、4～8、10任意一项所述的优化母管设计的安全注入系统，其中，还包括：配置为温度高的流体流出的热管段、配置为换热的热交换器，低压安注泵与热管段连接，在第二连接管路上设置有热交换器，热交换器位于低压安注泵下游，热交换器位于安全壳外，热管段位于安全壳内。
PCT/CN2021/140384 2020-12-23 2021-12-22 优化母管设计的安全注入系统 WO2022135455A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202011540809.5 2020-12-23
CN202011540809.5A CN112820424B (zh) 2020-12-23 2020-12-23 优化母管设计的安全注入系统

Publications (1)

Publication Number Publication Date
WO2022135455A1 true WO2022135455A1 (zh) 2022-06-30

Family

ID=75853660

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/140384 WO2022135455A1 (zh) 2020-12-23 2021-12-22 优化母管设计的安全注入系统

Country Status (2)

Country Link
CN (1) CN112820424B (zh)
WO (1) WO2022135455A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112820424B (zh) * 2020-12-23 2023-02-17 中国核电工程有限公司 优化母管设计的安全注入系统

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101847451A (zh) * 2009-06-19 2010-09-29 中广核工程有限公司 一种安全注入系统
CN203596180U (zh) * 2013-09-06 2014-05-14 中国核电工程有限公司 反应堆应急堆芯冷却系统
CN104992733A (zh) * 2015-05-25 2015-10-21 中国核电工程有限公司 一种安全注入系统
US20160055924A1 (en) * 2014-08-25 2016-02-25 Hitachi-Ge Nuclear Energy, Ltd. Boiling Water Type Nuclear Power Plant
CN210956182U (zh) * 2019-10-30 2020-07-07 华龙国际核电技术有限公司 安全注入系统及核电系统
CN112820424A (zh) * 2020-12-23 2021-05-18 中国核电工程有限公司 优化母管设计的安全注入系统
CN214476433U (zh) * 2021-01-05 2021-10-22 中国核电工程有限公司 一种承担正常余热排出功能的安全注入系统

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101847451A (zh) * 2009-06-19 2010-09-29 中广核工程有限公司 一种安全注入系统
CN203596180U (zh) * 2013-09-06 2014-05-14 中国核电工程有限公司 反应堆应急堆芯冷却系统
US20160055924A1 (en) * 2014-08-25 2016-02-25 Hitachi-Ge Nuclear Energy, Ltd. Boiling Water Type Nuclear Power Plant
CN104992733A (zh) * 2015-05-25 2015-10-21 中国核电工程有限公司 一种安全注入系统
CN210956182U (zh) * 2019-10-30 2020-07-07 华龙国际核电技术有限公司 安全注入系统及核电系统
CN112820424A (zh) * 2020-12-23 2021-05-18 中国核电工程有限公司 优化母管设计的安全注入系统
CN214476433U (zh) * 2021-01-05 2021-10-22 中国核电工程有限公司 一种承担正常余热排出功能的安全注入系统

Also Published As

Publication number Publication date
CN112820424A (zh) 2021-05-18
CN112820424B (zh) 2023-02-17

Similar Documents

Publication Publication Date Title
KR101447029B1 (ko) 다단 안전주입 장치 및 이를 구비하는 피동안전주입계통
CN110097982B (zh) 一种核电厂安全注入及余热排出系统
WO2022135455A1 (zh) 优化母管设计的安全注入系统
CN111081399B (zh) 核电厂应急堆芯冷却系统
JPH0411836B2 (zh)
US4654190A (en) Emergency feedwater system for steam generators of a nuclear power plant
JPS5827475B2 (ja) レイキヤクソウチ ノ タメノ ホゴソウチ
JPS6138308A (ja) 蒸気発生器の２次冷却材再循環装置
CN211906972U (zh) 反应堆非能动卸压系统
WO2023231358A1 (zh) 双环路小型压水堆应急余热排出系统
CN115274150B (zh) 一种基于集中海水冷却的二回路余热排出系统及方法
US5657360A (en) Reactor container
US5213755A (en) Low pressure coolant injection modification for boiling water reactors
JPS62217193A (ja) 非常用炉心冷却装置
KR100397291B1 (ko) 원자로의 정지냉각계통
CN216384146U (zh) 一种用于煤气发电机组的高压给水系统
JP4557935B2 (ja) 原子炉給水設備
CN220849777U (zh) 一种给水泵汽轮机进汽系统
CN214039592U (zh) 一种加热炉汽化系统
JPH0472471A (ja) 給水加熱器ドレンポンプアップ系統
CN117072255A (zh) 一种给水泵汽轮机进汽系统
CN112331370A (zh) 核电站用应急硼化系统
CN115588522A (zh) 用于提高高温气冷堆蒸汽发生器供水可靠性的主给水系统
JPS5816479B2 (ja) 総合機能型原子炉後備冷却系統設備
CN116313174A (zh) 一种压水堆核电厂余热排出系统及方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21909451

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21909451

Country of ref document: EP

Kind code of ref document: A1