The invention discloses a nuclear cascade utilization system and method based on liquid metal self-evaporating magnetic fluid power generation, and belongs to the field of comprehensive nuclear energy utilization. The system is mainly composed of a magnetic fluid pump, a magnetic fluid power generation channel, a fan, a nuclear reactor heat source, an electrolytic water hydrogen production device and related heat exchangers. Liquid metal is heated by the nuclear reactor heat source to vaporize partially and generate bubbles, resulting in volume expansion to push the liquid metal to flow by the power generation channel. Magnetic induction lines are cut to generate induced electromotive force, and then condensation is conducted by a condenser. The magnetic fluid pump pumps the liquid metal into a liquid metal heat evaporator to complete the circulation. Generated electrical energy can be used partially or totally for hydrogen production. Through related heat exchangers and processes, the resulting hot water can be used as domestic hot water. The system provided in the invention is simple and compact, the cost is low and the stability is high. The invention also provides an advanced method, for nuclear energy cascade utilization, which can realize power generation, hydrogen production and heating at the same time.

Nuclear cascade utilization system and method based on liquid metal self-evaporating magnetic fluid power generation

The invention discloses a supplementary cooling device for a spent fuel pool of a nuclear power plant. The device comprises a first loop which is positioned in a nuclear island plant building, and a second loop which is positioned outside the nuclear island plant building, wherein water in the spent fuel pool can circularly flow in the first loop; the heat is conveyed to the second loop through the first loop by utilizing an intermediate heat exchanger; heat of the fluid in the second loop is dissipated through a cooling tower. Compared with the prior art, the device has the advantages that adouble-loop cold chain is designed to limit the spent fuel pool into the nuclear island plant building, so that radioactive substances can be prevented from leaking from the nuclear island plant building by accident, and as a result, the safety and the reliability of the device are improved, and the cooling capacity of the spent fuel pool can be obviously improved; meanwhile, a double-die power supplying manner is adopted, and an independent hot trap is additionally arranged, so that the emergency treatment capacity of the spent fuel pool to whole-plant power-off accident and hot trap losing accident can be improved.

Supplementary cooling device for spent fuel pool of nuclear power plant

The invention provides a particle-bed dust removal and heat exchange integration device which comprises a barrel, a filter/heat exchange composite structure and a filter material. A flue is formed onthe inner side of the barrel, the filter/heat exchange composite structure is arranged in the flue and comprises an N-graded component structure, the N-graded component structure includes heat exchange pipes arranged in two lines separated by a preset distance along the axial direction of the barrel, and a filter material space is partitioned between two lines of the heat exchange pipes in the barrel. The filter material space is filled with the filter material, and N is larger than or equal to 1. The particle-bed filter structure and the heat exchange structure are integrated, and the deviceis downsized.

Particle-bed dust removal and heat exchange integration device

The invention discloses a flue gas dust removal and waste heat recovery integrated device. The device comprises a tank body, wherein end covers are welded to the front end and the rear end of the tankbody, and one ends, away from the tank body, of the two end covers are used as a flue gas inlet and a flue gas outlet respectively; cover plates are installed at the front end and the rear end of thetank body, a filter tube is installed in the tank body, and filter material particles are contained in the filter tube; a plurality of partition plates are installed in the tank body, the partition plates are arranged in a staggered mode and form a labyrinth type flow channel, and a water inlet pipe and a water outlet pipe are arranged on the side wall of the tank body; a containing cavity is formed in the side wall at the upper end of the tank body, and the containing cavity communicates with a steam outlet pipe; a dust removing outlet is formed in the side wall of one end cover and is provided with a first valve, and a second valve is installed at the flue gas inlet; and flue gas dust removal, heat exchange and backwashing operation can be carried out. According to the technical scheme,the device has the advantages that the dust removal, the waste heat recovery and the heat exchange operation of the high-temperature flue gas can be realized in an integrated mode, the function of convenient cleaning can be achieved through backwashing, the structure is stable and reliable, the efficiency is high, the production and manufacturing cost is greatly reduced, and the workload of operators is reduced.

Flue gas dust removal and waste heat recovery integrated device

The invention belongs to the field of design and driving of shape memory alloy components, and particularly relates to a memory alloy component capable of deforming and restoring and a device applyingthe same. The memory alloy component comprises a body (7) and a variable cross-section channel (8) arranged in the body, wherein the variable cross-section channel (8) comprises a small channel (2) and a large channel (3), end connecting pipes (11) are arranged at the two ends of the body (7), the diameter of the large channel (3) is more than two times that of the small channel (2), fluid entersfrom the end connecting pipes (11), and when the fluid flows into the small channel (2) through the large channel (3), the small channel (2) can be heated to a memory alloy phase transformation temperature point to drive the memory alloy to deform and restore. Different from an external actuation method adopted by a traditional nickel-titanium memory alloy component, internal actuation is adopted, and a new thought is provided for deformation research of the shape memory alloy component.

Memory alloy component capable of deforming and restoring and device applying same

The invention provides a device integrating dust removal and heat exchange of a granular bed. The device comprises a flue gas passage and a waste heat recovery fluid passage, wherein the flue gas passage is composed of a flue gas inlet and outlet cavity, distribution plates and at least one filter passage and is used for purifying high-temperature flue gas; the distribution plates are connected with the flue gas inlet and outlet cavity, pass between at least one filter passage and isolates the flue gas passage from the waste heat recovery fluid passage; the waste heat recovery fluid passage is composed of a waste heat fluid inlet and outlet and a filter cylinder which is connected with the waste heat fluid inlet and outlet and accommodates at least one filter passage; and the waste heat recovery fluid passage is formed between the filter cylinder and the external of the filter passage and is used for recovering waste heat. By combining a filter structure with a heat exchange structure of the granular bed into a whole body, the device has a simple structure, is small in size and realizes efficient waste heat recovery while performing high-temperature flue gas purification and dust removal.

Device integrating dust removal and heat exchange of granular bed and method

The invention discloses a liquid metal and high-pressure gas flowing heat exchanging device which comprises a liquid metal loop and a high-pressure gas loop. The invention further discloses a method for exchanging heat by using the heat exchanging device. According to the liquid metal and high-pressure gas flowing heat exchanging device and the liquid metal and high-pressure gas flowing heat exchanging method, a flowing heat exchanging property of a high-temperature liquid lead-bismuth alloy and a flowing heat exchanging property of the high-temperature liquid lead-bismuth alloy with high-pressure helium can be researched, the flowing heat exchanging properties of other high-temperature liquid metals and flowing heat exchanging properties of the other high-temperature liquid metals with a high-pressure gas can be researched, and detailed and reliable data can be provided to a subcritical system which is driven by an accelerator and cooled by adopting a liquid heavy metal and relevant nuclear reactors.

Liquid metal and high-pressure gas flowing heat exchanging device and liquid metal and high-pressure gas flowing heat exchanging method

The invention discloses a double-sided staggered printed circuit board type heat exchange plate and a heat exchanger, and belongs to the technical field of the heat exchangers. The heat exchange platecomprises a plurality of first fluid passages and a plurality of second fluid passages; the first fluid passages are formed in one side of the heat exchange plate at intervals, the second fluid passages are formed in the other side of the heat exchange plate, and the first fluid passages and the second fluid passages are formed at intervals in the heat exchange plate. According to the heat exchange plate, the double-sided staggered fluid passages are adopted to form countercurrent or downstream heat exchange, so that full-main surface heat exchange is achieved, the secondary heat exchange surface does not exist, and the heat exchange area and the heat exchange effect are effectively improved; and in addition, the heat exchange plate is relatively thin, so that the size and the weight of aheat exchange module core are further reduced, and the compactness and the heat exchange performance of the heat exchanger are improved.

Double-sided staggered printed circuit board type heat exchange plate and heat exchanger

The invention relates to a high-temperature liquid metal two-stage cooling device The high-temperature liquid metal two-stage cooling device is composed of two stages of cooling loops, a primary cooling loop comprises a liquid metal heat exchanger, wherein a tube side is the high-temperature liquid metal, a shell side is a primary cooling working medium; a heat regenerator, wherein the shell side is a high-temperature primary cooling working medium after heat exchange with the high-temperature liquid metal in a liquid metal heat exchanger, the tube side is the primary cooling working medium; a gas tank used for storing the primary cooling working medium in the primary cooling loop, and then driving the primary cooling working medium to perform cycle operation in the liquid metal heat exchanger and the heat regenerator through a compressor; a secondary cooling loop comprises a cooler, the tube side is the primary cooling working medium flowed out of the heat regenerator in the primary cooling loop after heat exchange, the shell side is a secondary cooling working medium; and a refrigerating unit, wherein the temperature of the secondary cooling working medium is reduced to the technical required temperature The invention also discloses a high-temperature liquid metal two-stage cooling method

High-temperature liquid metal two-stage cooling device and method thereof

The invention discloses a turbine blade provided with a cooling structure, and a gas turbine using the turbine blade The turbine blade comprises a blade body and a cooling plug piece, wherein the cooling plug piece is fixed on the blade body and is prepared from a shape memory alloy material; relative to a temperature below a preset temperature, the cooling plug piece can be changed in shape and/or structure by virtue of training when the temperature is above the preset temperature in order to increase the amount of a cooling medium in the region or enhance disturbance of the cooling medium, so that the aim of intensifying heat exchange is realized The turbine blade disclosed by the invention is capable of increasing the utilization rate of the cooling medium, improving the surface temperature distribution uniformity of the blade and guaranteeing safe running of the gas turbine

Wang Yongwei

Papers

Device integrating dust removal and heat exchange of granular bed and method

Liquid metal and high-pressure gas flowing heat exchanging device and liquid metal and high-pressure gas flowing heat exchanging method

Double-sided staggered printed circuit board type heat exchange plate and heat exchanger

High-temperature liquid metal two-stage cooling device and method thereof

Turbine blade provided with cooling structure, and gas turbine using turbine blade