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CN-111288825-B - Nuclear energy band pressure feedback nuclear leakage prevention heat exchanger

CN111288825BCN 111288825 BCN111288825 BCN 111288825BCN-111288825-B

Abstract

The invention discloses a nuclear energy band pressure feedback nuclear leakage prevention heat exchanger, which comprises a heat exchanger body, at least one heat conducting plate and a movable clamping plate, wherein the heat conducting plate is clamped between the fixed clamping plate and the movable clamping plate and is provided with a cavity structure, the heat conducting plate is provided with at least one water inlet pipe and one water outlet pipe, an exchange cavity is formed between the heat conducting plate and the movable clamping plate, a pressure alarm is arranged on an upper collecting pipe, the pressure alarm is arranged at an inlet position of the upper collecting pipe, the heat conducting plate is composed of a metal plate and a metal cover plate, the metal plate and the metal cover plate are combined together in a welding mode, and the metal plate is provided with a cavity. The nuclear leakage prevention heat exchanger with the pressure feedback is provided with a pressure alarm, the pressure alarm monitors the pressure change of the lead-based low-temperature alloy material at any time, and when nuclear leakage danger occurs, the pressure alarm can start an alarm action to prompt the nuclear leakage risk and timely treat the emergency repair.

Inventors

  • SUN HOUCAI
  • TONG JUN
  • YAN BIAO

Assignees

  • 孙厚才

Dates

Publication Date
20260508
Application Date
20200326

Claims (8)

  1. 1. The nuclear energy band pressure feedback nuclear leakage prevention heat exchanger is characterized by comprising a heat exchanger body, an upper collecting pipe (9) and a lower collecting pipe (10), wherein the heat exchanger body comprises a fixed clamping plate (2), at least one heat conducting plate (3) and a movable clamping plate (5), the heat conducting plate (3) is clamped between the fixed clamping plate (2) and the movable clamping plate (5), the heat conducting plate (3) is provided with a cavity structure for filling lead-based low-temperature alloy materials, the heat conducting plate (3) is provided with at least one water inlet pipe (39) and one water outlet pipe (40), an exchange cavity is formed between the heat conducting plate (3) and the movable clamping plate (5), and the cavity structure is respectively communicated with the upper collecting pipe (9) and the lower collecting pipe (10); The upper collecting pipe (9) is provided with an inlet, the upper collecting pipe (9) is provided with a pressure alarm (8), and the pressure alarm (8) is arranged at the inlet position of the upper collecting pipe (9).
  2. 2. The nuclear leakage prevention heat exchanger according to claim 1, wherein the upper and lower parts of the heat conducting plate (3) are respectively provided with an upper inlet hole (31) and a lower outlet hole (34), the upper inlet hole (31) and the lower outlet hole (34) are respectively communicated with the cavity structure, the upper header (9) is communicated with the upper inlet hole (31), and the lower header (10) is communicated with the lower outlet hole (34).
  3. 3. The nuclear leakage prevention heat exchanger according to claim 1, wherein an inlet and outlet joint (1) is arranged on the outer side of the fixed clamping plate (2), and the inlet and outlet joint (1) is communicated with the water inlet pipe (39) and the water outlet pipe (40).
  4. 4. The nuclear leakage prevention heat exchanger according to claim 1, wherein when more than one heat conducting plates (3) are spliced together, a circulating cavity for circulating water is spliced between the water inlet pipes (39) or the water outlet pipes (40), and gaskets are arranged between adjacent water inlet pipes (39) or between adjacent water outlet pipes (40).
  5. 5. The nuclear leakage prevention heat exchanger according to claim 1, further comprising an upper guide rod (4) and a lower guide rod (7), wherein through holes (21) are reserved at the upper end and the lower end of the fixed clamping plate (2) and the lower end of the movable clamping plate (5) and are used for installing the upper guide rod (4) and the lower guide rod (7), grooves (35) are respectively formed in the upper end and the lower end of the heat conducting plate (3) and are used for clamping the upper guide rod (4) and the lower guide rod (7), fastening bolts (6) are further arranged, and clamping grooves (22) for installing the fastening bolts (6) are respectively formed in the outer sides of the fixed clamping plate (2) and the movable clamping plate (5).
  6. 6. The nuclear leakage prevention heat exchanger according to claim 1, wherein the heat conducting plate (3) is composed of a metal plate (33) and a metal cover plate (32) which are combined together in a welding mode, and the metal plate (33) is provided with a cavity (36).
  7. 7. The nuclear leakage prevention heat exchanger according to claim 6, wherein the side of the metal plate (33) facing away from the cavity (36) is corrugated, the side of the metal cover plate (32) is corrugated, and the edges of the metal plate (33) are provided with small channels.
  8. 8. The nuclear leakage prevention heat exchanger according to claim 6, wherein the cavity (36) is provided with array support columns (37).

Description

Nuclear energy band pressure feedback nuclear leakage prevention heat exchanger Technical Field The invention belongs to the technical field of nuclear reactor safety and heat exchange, and relates to a nuclear energy band pressure feedback nuclear leakage prevention heat exchanger. Background A nuclear reactor, also known as an atomic energy reactor or reactor, is a device that can sustain a controlled, self-sustaining, chain-type nuclear fission reaction to achieve nuclear energy utilization. The nuclear reactor enables a self-sustaining chain-type nuclear fission process to occur therein without supplementing a neutron source by reasonably arranging nuclear fuel. Strictly speaking, the reactor covers a fission reactor, a fusion reactor, and a fission fusion hybrid reactor. Nuclear energy is mainly used for power generation, but it has wide application in other fields. Such as nuclear heating, nuclear power, etc. The nuclear energy is used as one of the current mature methods for replacing primary energy, and a great deal of research on regional heat supply is carried out by utilizing the nuclear energy, so that compared with the traditional heat source, the pollution emission can be reduced, the heat supply safety is guaranteed, the energy structure of China is effectively improved, the situation of serious energy supply shortage is relieved, and the method has positive significance for protecting the environment, protecting the health of people, relieving the transportation pressure of fire coal and the like. The nuclear energy heat supply facility comprises a nuclear energy heat source part and a heat supply network part, and heat exchange transmission is carried out between the nuclear energy heat source and the heat supply network through a heat exchanger. However, after the heat exchanger is used for a long time, the heat exchanger is easy to leak due to factors such as corrosion, abrasion, thermal stress and the like, so that irreparable harm is brought to personal safety of people, and meanwhile, the damage and the influence on the environment are huge. Therefore, to ensure safe use of the core, it is common practice to add an intermediate two-circuit between the nuclear heat source circuit and the heat network circuit. And nuclear radioactivity is prevented from entering the urban heating pipe network through the hot network by utilizing the transitional effect of the middle two loops. However, due to the existence of the middle two loops, the occupied area of the nuclear heating system is large, and the heat exchange efficiency is reduced. Therefore, it is necessary to design a new heat exchanger form, to improve the safety of nuclear energy application and heat exchange efficiency of heat energy, and to make up for the shortages of the existing technology. The present invention has been made in order to solve the above-described problems. Disclosure of Invention The invention aims to provide a nuclear leakage prevention heat exchanger with pressure feedback of nuclear energy, which utilizes a heat conducting plate with a cavity structure filled with lead-based low-temperature alloy materials to exchange heat between a nuclear energy heat source and a heat supply network, and realizes nuclear leakage alarm through pressure monitoring and transmission of lead-based low-melting-point liquid alloy after the heat conducting plate is used for a long time, so as to prevent or reduce nuclear leakage from entering a heating pipe network when a nuclear energy reactor performs heat exchange work, and improve the heat exchange efficiency of nuclear energy heat. In order to achieve the above purpose, the present invention is implemented by the following technical scheme: The aim of the invention is achieved by the following technical scheme: the nuclear energy band pressure feedback nuclear leakage prevention heat exchanger comprises a heat exchanger body, wherein the heat exchanger body comprises a fixed clamping plate, at least one heat conducting plate and a movable clamping plate, the heat conducting plate is clamped between the fixed clamping plate and the movable clamping plate and is provided with a cavity structure, the heat conducting plate is provided with at least one water inlet pipe and one water outlet pipe, and an exchange cavity is formed between the heat conducting plate and the movable clamping plate. In one embodiment, an upper header and a lower header are also provided, and the cavity structure is in communication with the upper header and the lower header, respectively. Further, the upper part and the lower part of the heat conducting plate are respectively provided with an upper inlet hole and a lower outlet hole, the upper inlet hole and the lower outlet hole are respectively communicated with the cavity structure, an upper collecting pipe is communicated with the upper inlet hole, and a lower collecting pipe is communicated with the lower outlet hole. Preferably, the upper header is