36 results about "Pool-type reactor" patented technology

The invention relates to an inherent safety tube-pool type nuclear reactor for research. The cooling-water main pump and the after-heat deriving pump of the reactor are set at back of the main heat-exchanger and connected in parallel in the main circuit room. The after-heat heat-exchanger is fitted in the water pool of the reactor. The main circuit room is provided at upper part of the water pool and at the bottom of the main circuit room there is a pipeline communicated to the under-water part of the water pool. At the inlet and the outlet of the reactor core is respectively provided with a hydraulic control open-close valve communicated with the water pool of the reactor. When the main pipeline occurs water-loss fault, water in the main circuit room can return to the water pool. At same time, as the pressure in the reactor container is low, the hydraulic control open-close valves at inlet and outlet of the reactor core automatically opens. When the after-heat deriving pump occurs fault, the inlet-outlet hydraulic control open-close valve is opened by a signal of high reactor-core temperature to make the reactor core and the water pool form a natural circulation to derive the after heat of reactor core into the water pool of the reactor.

The invention discloses a temperature-triggered passive accident residual heat removal system for a pool type reactor. The system consists of a direct reactor core cooling system and an auxiliary reactor safety container cooling system. The system has the significant advantage that the direct reactor core cooling system and the auxiliary reactor safety container cooling system share one air cooling system, so that the system design of the reactor is greatly simplified, and the construction cost is saved. The auxiliary reactor safety container cooling system realizes natural cooling through ambient air on the outer side of a safety container, and the process has the characteristic of passiveness. The passive accident residual heat removal system is passive, independent, high in efficiency and high in reliability and meets the safety design requirement for the pool type reactor.

The invention discloses an in-pile heat separation system of a liquid heavy metal cooling natural circulating pool type reactor. The system consists of an inner layer coolant inlet, an outer layer coolant inlet, a coolant inlet baffle, an inner layer heat partition plate, a middle layer heat partition plate, an outer layer heat partition plate, an inner layer coolant outlet, an outer layer coolant outlet, an inner layer coolant outlet baffle and an outer layer coolant outlet baffle. Gaps between the heat partition plates of the system are filled with liquid heavy metal and are communicated with a cold pool; coolants in the gaps between the heat partition plates are used for cooling the heat partition plates from bottom to top under the action of natural circulating driving force and are gathered into a hot pool through the coolant outlets above the heat partition plates. The in-pile heat separation system realizes a function of separating the cold pool from the hot pool in the liquid heavy metal cooling natural circulating pool type reactor; with the adoption of the complete passive design, the system is simple in structure; during running, an in-pile structural member does not need to be added or started; the heat efficiency of the liquid heavy metal cooling natural circulating pool type reactor can be effectively improved, the circulating stability of the coolants of the reactor can be guaranteed, and the economical property and the safety of the reactor can be improved.

The invention discloses a passive decay heat removal system for a liquid metal cooling pool type reactor. The passive decay heat removal system is composed of a coolant inlet, a gravity-type heat pipe, an upper partition plate, a lower partition plate, a box body, a coolant outlet, a gas riser pipe, an exhaust stack, a thermal isolation layer, pipelines connected between devices, and valves. According to the invention, when a reactor is under accident states like station blackout, water supply interruption of a main heat exchanger or earthquake, a ventilation door of the exhaust stack is opened; cold air from the interior of a reactor containment enters into the box body through the coolant inlet, cools the condensing section of the gravity-type heat pipe and enters the gas riser pipe from the coolant outlet; hot air flows out of the reactor containment through the gas riser pipe; thus, the process has passive characteristic. The passive decay heat removal system provided by the invention has simple structure, is convenient to start, can simultaneously remove core decay heat and prevent radioactive substances in a reactor pit from escaping, and has passiveness, independence and high reliability.

The invention discloses a gas lift-based liquid metal cooling pool-type reactor multifunctional reactor internal thermal separation system. According to the gas lift-based liquid metal cooling pool-type reactor multifunctional reactor internal thermal separation system, when a reactor is at normal operation conditions, a thermal separation valve is opened, an auxiliary heating valve is closed, a gas filter and a gas compressor are turned on, and thermal separation effect is realized by the gas lift-based liquid metal cooling pool-type reactor multifunctional reactor internal thermal separation system; when the reactor is at low-power running or shutdown condition, the auxiliary heating valve is opened, the thermal separation valve is closed, the gas filter, a gas heater, and the gas compressor are turned on, and auxiliary heating effect is realized by the gas lift-based liquid metal cooling pool-type reactor multifunctional reactor internal thermal separation system The gas lift-based liquid metal cooling pool-type reactor multifunctional reactor internal thermal separation system is simple in structure; activation is convenient; cold and hot pool separation and reactor internal cooling agent auxiliary heating of liquid metal cooling pool-type reactors can be realized at the same time; the complexity of reactor system structure is reduced effectively; reactor economical efficiency and security are increased; application range of the gas lift-based liquid metal cooling pool-type reactor multifunctional reactor internal thermal separation system is wide; the gas lift-based liquid metal cooling pool-type reactor multifunctional reactor internal thermal separation system is suitable for both liquid metal cooling pool-type reactors with forced circulation, and liquid metal cooling pool-type reactors with natural circulation.

The invention discloses a passive natural circulation intensifying system and method for a liquid metal cooled reactor after flow loss, and belongs to a safety protection system of the liquid metal cooled reactor. The passive natural circulation intensifying system comprises a high-pressure gas storage tank, a throttle valve, and a vertical pipeline and an inverted U-shaped pipeline which are positioned in a reactor. According to the system and the method disclosed by the invention, due to the connection design of the pipelines, when a main pump loses drive force, the liquid metal cooled pool type rector automatically triggers high-pressure gas to be injected into the upper part of a reactor core by a high-pressure injection tank without any signal transfer; and the injected gas pushes a coolant at an exit of the reactor core to flow upwards, and the natural circulation after a flow-loss accident is intensified. According to the system and the method disclosed by the invention, the automatic start of the reactor can be realized after the forced circulation is lost, and the natural circular flow of cold and hot pool loops is intensified so as to guarantee the effective cooling of the reactor core.

The invention discloses an auxiliary heating system of a liquid heavy metal cooling natural circulating pool-type reactor. The system comprises a gas storage tank, a filter, a gas heater, a master gas input pipe, a main gas input valve, a main gas input pipe, an extraction opening, a main gas output valve, a main gas output pipe, a gas emergency input valve, a gas emergency input pipe, a gas emergency output valve, a gas emergency output pipe, a master gas output pipe, an air pump, a pipeline and other valves, wherein the pipeline is used for connecting the equipments. By adopting the system, the auxiliary heating function on liquid heavy metal inside the reactor is achieved inside a main container of the liquid heavy metal cooling natural circulating pool-type reactor and a ring cavity formed by a safe container, the system is simple in structure and has independence and reliability, members inside the reactor do not need to be added and started in operation, and the safety of the reactor can be effectively improved.

The invention discloses a multi-pond type reactor. The reactor comprises a main container, an attached container, a connecting pipeline, a reactor core, a steam generator, a main pump and a neutron shielding body, wherein the main container is used for providing support and containing for the reactor core and the cooling agent thereof; the attached container is used for providing the support and the containing for the steam generator and the main pump and the cooling agent thereof; the main container is communicated with the attached container through the connecting pipeline; the neutron shielding body is installed between the main container and the attached container so as to provide the shielding for the steam generator and the main pump. The reactor disclosed by the invention has the advantages of being less in cooling agent loading quantity and simple in boundary, and the main circulating equipment in the reactor bears the low irradiation strength.

The invention discloses a waterproof and thermal insulation sleeve and a pool type reactor with the waterproof and thermal insulation sleeve. The pool type reactor comprises a pool, a pressure container, a reactor core and a sleeve, wherein the reactor core is arranged in the pressure container, and the pressure container is provided with a container inlet and a container outlet; the sleeve is fixedly installed in the pool and immersed below the liquid level of the pool; the pressure container is installed in the sleeve so as to be isolated from the pool; and the sleeve is provided with a through hole for a loop pipeline to penetrate through. According to the pool type reactor, the sleeve is sleeved outside the pressure container and the reactor core and can provide a waterproof space fora control rod drive mechanism so as to avoid inconvenience of underwater design or operation, play a role in thermal insulation of the pressure container and the reactor core, reduce heat exchange ofthe wall of the pressure container and reduce heat loss, and the sleeve can play a role in radioactive shielding of the reactor core and reduce radiation quantity, and has good safety and practicability.

An embodiment of the present invention provides a tritium measurement system (100) for a pool reactor, comprising: an attenuation module (10) arranged to be connected with a coolant loop of the pool reactor, from which a coolant flows into the attenuation module (10), the attenuation module (10) attenuating the coolant; a measuring module (11) connected with the attenuation module (10) and used for measuring the tritium activity of the attenuated coolant flowing out of the attenuation module (10); and a circulating module (12) connected with the measuring module (11) and used for discharging the measured coolant into the coolant loop of the pool reactor. According to the tritium measurement system provided by the embodiment of the invention, the tritium measurement precision is improved, the measurement environmental protection property and safety are improved, the long-term measurement operation cost can be reduced, and the personnel investment is reduced.

The invention discloses a passive switch for a pool type reactor core and a pool. The passive switch is mainly divided into a valve body (1) and a rotating part, wherein the rotating part comprises a damping arm (3) and a counter weight; the damping arm (3) and the counter weight are moveably connected with the valve body (1) through a bracket respectively and are independent from each other; and a valve clack (2) and a damping sheet (6) are connected on the damping arm (3) respectively. The invention provides the passive switch for the pool type reactor core and the pool, which can prolong the service life of a valve, can satisfy different conditions and is turned on or turned off by means of gravity thereof.

The invention discloses a vertical pump for a pool type reactor. The vertical pump for the pool type reactor comprises a pump shaft, a vertical pump shell, a hydraulic component, a power input component and a circulation component. The pump shaft is arranged in the vertical pump shell. The upper end of the pump shaft extends out of the vertical pump shell to be connected with the power input component. The lower end of the pump shaft extends out of the vertical pump shell to be connected with the hydraulic component. The circulation component is arranged on the portion, in liquid, of the pump shaft and used for generating upward or downward flowing power when the pump shaft rotates. The portion, corresponding to the circulation component, of the vertical pump shell is provided with two or more communicating holes. At least two of the communicating holes are located at different heights. The vertical pump is mainly applied to the pool type reactor and used as a main circulation pump for driving coolant, and the vertical pump for the pool type reactor can provide a enough pressure head; and besides, because the circulation component is installed on the pump shaft, the coolant in the pump shell can communicate with coolant in a reactor pool, and the coolant in the pump shell is protected against a flowing dead zone.

The embodiment of the invention provides a cooling system. The cooling system comprises an air inducing device and at least one group of cooling loops, wherein the air inducing device is arranged at the upper position outside a pool type reactor water pool and is used for increasing the flow rate of air; and the cooling loop comprises a first heat exchanger, a second heat exchanger, a first pipeline, a second pipeline and a valve. The cooling loop in the cooling system provided by the invention adopts a separated heat pipe principle, passive export of decay heat in the pool type reactor pool can be realized without depending on any active equipment and human intervention, and the cooling system has high safety.