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CN-224220882-U - Nuclear power plant water intake filtering facility

CN224220882UCN 224220882 UCN224220882 UCN 224220882UCN-224220882-U

Abstract

The embodiment of the application provides a water taking and filtering facility of a nuclear power plant, which comprises an inlet, an outlet, a first filtering piece and a second filtering piece, wherein the first filtering piece and the second filtering piece are sequentially arranged between the inlet and the outlet, the first filtering piece comprises a first supporting frame, a first filter screen and a fixing rod, the first filter screen and the fixing rod are arranged in the first supporting frame, the first supporting frame comprises a bottom plate, a top plate, a first side plate and a second side plate, a first mounting hole is formed in the bottom plate, a second mounting hole is formed in the top plate, the fixing rod sequentially penetrates through the second mounting hole and the first mounting hole and is connected with the bottom plate, the second filtering piece comprises a second filter screen and a fixing rope arranged on the second filter screen, and the second filter screen is connected with the first supporting frame through the fixing rope. Like this, through setting up double-deck filtration, and through all being connected first braced frame with first filter screen and second filter screen, can improve the life of filter screen.

Inventors

  • LI CHAO

Assignees

  • 华龙国际核电技术有限公司

Dates

Publication Date
20260512
Application Date
20250530

Claims (10)

  1. 1. A water intake filtering facility of a nuclear power plant, which is characterized by comprising an inlet, an outlet, a first filtering piece and a second filtering piece; The first filter piece and the second filter piece are sequentially arranged between the inlet and the outlet, the first filter piece comprises a first support frame, a first filter screen and a fixed rod, the first filter screen and the fixed rod are arranged in the first support frame, the first support frame comprises a bottom plate, a top plate, a first side plate and a second side plate, a first mounting hole is formed in the bottom plate, a second mounting hole is formed in the top plate, and the fixed rod sequentially penetrates through the second mounting hole and the first mounting hole to be connected with the bottom plate; The second filter piece comprises a second filter screen and a fixed rope arranged on the second filter screen, and the second filter screen is connected with the first support frame through the fixed rope.
  2. 2. The nuclear power plant water intake filtering facility of claim 1, wherein the first support frame further comprises a first fastener disposed on the first support frame, the first fastener being coupled to the first filter screen, the first fastener being configured to secure the first filter screen to the first support frame.
  3. 3. The nuclear power plant water intake filtering facility of claim 2, wherein the first side plate is provided with a third mounting hole, the second side plate is provided with a fourth mounting hole, and the first fastener sequentially passes through the third mounting hole, the first filter screen and the fourth mounting hole to be connected with the second side plate.
  4. 4. The nuclear power plant water intake filtering facility of claim 1, wherein the first filter mesh is a steel wire mesh and the second filter mesh is a plastic mesh.
  5. 5. A nuclear power plant water intake filtering facility as defined in claim 3, further comprising a third filter element located between the inlet and the first filter element.
  6. 6. The nuclear power plant water intake filtering facility of claim 5, wherein the third filter includes a second support frame and a plurality of louvers disposed within the second support frame, the plurality of louvers being spaced apart.
  7. 7. The nuclear power plant water intake filtering facility of claim 6, wherein the second support frame bottom is provided with an insert for securing the second support frame in a target position.
  8. 8. The nuclear power plant water intake filtering facility of claim 6, wherein the third filter includes a second fastener disposed on the second support frame, through holes are provided on both sides of the second support frame, and the second fastener passes through the through holes and is connected to the plurality of breast boards.
  9. 9. The nuclear power plant water intake filtering facility of claim 6, wherein the spacing between the plurality of baffle plates is greater than the aperture of the first filter screen, the aperture of the first filter screen being greater than the aperture of the second filter screen.
  10. 10. The nuclear power plant water intake filtering facility of claim 8, wherein the first fastener and the second fastener are each steel cords.

Description

Nuclear power plant water intake filtering facility Technical Field The application relates to the field of sea water open channel water intake of a nuclear power plant, in particular to a water intake filtering facility of the nuclear power plant. Background Pressurized water reactor nuclear power plants near the coast typically utilize seawater as cooling water. Wherein, mainly provide necessary cooling water for the condenser and the auxiliary cooling water system of turbo generator, provide cooling water for equipment cooling water system. At present, most nuclear power plants adopt plastic nets or high-density polyethylene nets to intercept floaters and marine organisms at water intake doors and water intake open channels to the front pool section of a pump house. The net is fixed by the floating ball and the suspending drop, and is easy to be damaged under the influence of sea organisms such as sea waves, floaters, shrimp, jellyfish and the like, and the consumption of the net is large. Disclosure of utility model The embodiment of the application provides a water intake filtering facility for a nuclear power plant, which can solve the problem of large consumption of a net in the water intake filtering facility of the current nuclear power plant, can intercept marine organisms and floaters by adopting a physical interception facility, and can filter the marine organisms and floaters so as to ensure the water intake safety of the nuclear power plant. The application is mainly arranged at the position of the water outlet door, stainless steel fences (the fence spacing is 50 mm) are added, and the steel fences are hung behind to guide a dirt blocking net so as to guide floaters out of the water outlet door. In an open channel formed from a water intake to a guide dike, before seawater enters a pump room, one to three steel grids or steel filter screens are additionally arranged according to site conditions, and marine organisms and floaters are intercepted and filtered in a mode of hanging plastic net tools at the back. The scheme can forcedly intercept marine organisms by utilizing the strength of the steel fence or the steel wire net, meanwhile, the plastic net is combined with the plastic net, the plastic net is hung on the steel fence or the steel wire net, the structural stability of the plastic net is better, the breakage probability can be reduced, the high-density polyethylene plastic net is changed into a common plastic net, the replacement of net tools is reduced, the running cost is saved, the interception capability of the marine organisms is obviously improved, the safety of water taking engineering of a nuclear power plant is improved, and the shutdown probability of a unit is reduced. In order to solve the technical problems, the application is realized as follows: The embodiment of the application provides a water intake filtering facility of a nuclear power plant, which comprises an inlet, an outlet, a first filtering piece and a second filtering piece; The first filter piece and the second filter piece are sequentially arranged between the inlet and the outlet, the first filter piece comprises a first support frame, a first filter screen and a fixed rod, the first filter screen and the fixed rod are arranged in the first support frame, the first support frame comprises a bottom plate, a top plate, a first side plate and a second side plate, a first mounting hole is formed in the bottom plate, a second mounting hole is formed in the top plate, and the fixed rod sequentially penetrates through the second mounting hole and the first mounting hole to be connected with the bottom plate; The second filter piece comprises a second filter screen and a fixed rope arranged on the second filter screen, and the second filter screen is connected with the first support frame through the fixed rope. Optionally, the first support frame further includes a first fastener disposed on the first support frame, the first fastener is connected to the first filter screen, and the first fastener is used to fix the first filter screen to the first support frame. Optionally, a third mounting hole is formed in the first side plate, a fourth mounting hole is formed in the second side plate, and the first fastener sequentially penetrates through the third mounting hole, the first filter screen and the fourth mounting hole to be connected with the second side plate. Optionally, the first filter screen is a steel wire mesh, and the second filter screen is a plastic mesh. Optionally, the nuclear power plant water intake filtering facility further includes a third filter element located between the inlet and the first filter element. Optionally, the third filter comprises a second support frame and a plurality of breast boards disposed within the second support frame, the plurality of breast boards being disposed in spaced apart relation. Optionally, an insert is provided at the bottom of the second support frame, the i