CN223329794U - Nuclear power plant cold source water intake sea biology cleaning structure - Google Patents

Abstract

The utility model discloses a nuclear power plant cold source water taking marine organism cleaning structure which comprises a dissolving cavity, a stabilizing pipe, a floating pool and a cold source water taking culvert which are sequentially connected, wherein the dissolving cavity is provided with a water inlet, a plurality of interfaces connected with a carbon dioxide gas source are further arranged on the dissolving cavity, the cold source water taking culvert is provided with a water flow channel, and a marine organism suction platform positioned above the water flow channel is arranged on the cold source water taking culvert. By using the nuclear power plant cold source water intake marine organism cleaning structure, a plurality of interception nets with different pore sizes are not required to be arranged in the breakwater, and the structure is simpler. The device can float, gather and suck most marine organisms, has high marine organism cleaning efficiency, can reduce manual operation, and can effectively ensure the operation safety of the nuclear power unit.

Description

Nuclear power plant cold source water intake sea biology cleaning structure

Technical Field

The utility model relates to the technical field of nuclear power, in particular to a nuclear power plant cold source water intake marine organism cleaning structure.

Background

In the aspect of measures for coping with cold source risks, the main stream method adopted at home and abroad at present is to intercept and salvage disaster-causing objects entering a cold source area of a power plant by using various methods, and the structure for taking water from the cold source and removing marine organisms which is common in front of a front pool of the current nuclear power plant sequentially comprises a port door net connected with a breakwater of the nuclear power plant, one or a plurality of dirt blocking nets or mechanical cleaning platforms (including nets) with different net diameters and net surfaces basically perpendicular to the water flow direction from outside to inside.

The prior water taking structure has the following defects:

(1) The variety of the net tools is multiple, the nuclear power plant needs to prepare various net tool parts with different net diameters, and the purchasing and checking flow is complex. (2) The marine organism cleaning personnel and the materials have large investment, and the nuclear power plant needs to invest a great deal of manpower (diver to launch, drive the ship to manually clean the netting gear, etc.), and materials (the ship, the netting gear, etc.) to continuously clean the marine organism. The net is made of soft material, and is easy to damage and frequent to replace. (3) The risk of cold source failure is high, if marine creatures are not cleaned timely, the marine creatures enter the internal drum net of the power plant to gather, and the cold source failure can be caused, so that power reduction or machine jump and pile jump are caused.

Disclosure of utility model

The utility model aims to solve the technical problem of providing a nuclear power plant cold source water intake marine organism cleaning structure.

The technical scheme includes that the nuclear power plant cold source water intake marine organism cleaning structure comprises a dissolving cavity, a stabilizing pipe, a floating pool and a cold source water intake culvert which are sequentially connected, wherein the dissolving cavity is provided with a water inlet, a plurality of interfaces connected with a carbon dioxide gas source are further arranged on the dissolving cavity, the cold source water intake culvert is provided with a water flow channel, and a marine organism suction platform positioned above the water flow channel is arranged on the cold source water intake culvert.

In some embodiments, the cross-sectional area of the floating pond gradually decreases from a side near the stabilizing tube to a side near the cold source water intake culvert.

In some embodiments, the stabilizing tube is hollow cylindrical.

In some embodiments, the upper end of the floating pond is flush with the upper end of the cold source water intake culvert.

In some embodiments, the number of interfaces is four.

In some embodiments, the cold source water intake culvert is provided with at least one interception net.

In some embodiments, the interception net is a metal interception net.

In some embodiments, the intercepting mesh has a mesh aperture of less than 3mm.

In some embodiments, a subsea heater is provided at the outlet of the stabilising tube.

In some embodiments, a control valve is provided on the interface.

The utility model has the following beneficial effects that the nuclear power plant cold source water intake marine organism cleaning structure is applied, a plurality of interception nets with different pore sizes are not required to be arranged in the breakwater, and the structure is simpler. The device can float, gather and suck most marine organisms, has high marine organism cleaning efficiency, can reduce manual operation, and can effectively ensure the operation safety of the nuclear power unit.

Drawings

In order to more clearly illustrate the technical solution of the present utility model, the following description will be given with reference to the accompanying drawings and examples, it being understood that the following drawings only illustrate some examples of the present utility model and should not be construed as limiting the scope, and that other related drawings can be obtained from these drawings by those skilled in the art without the inventive effort. In the accompanying drawings:

Fig. 1 is a schematic structural view of a nuclear power plant cold source water intake marine organism removal structure in some embodiments of the present utility model.

Detailed Description

For a clearer understanding of technical features, objects and effects of the present utility model, a detailed description of embodiments of the present utility model will be made with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "transverse", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are configured and operated in specific directions based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model, and do not indicate that the apparatus or element to be referred to must have specific directions, and thus should not be construed as limiting the present utility model.

It should also be noted that unless explicitly stated or limited otherwise, terms such as "mounted," "connected," "secured," "disposed," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected via an intermediate medium, or in communication between two elements or in an interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or one or more intervening elements may also be present. The terms "first," "second," "third," and the like are used merely for convenience in describing the present utility model and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby features defining "first," "second," "third," etc. may explicitly or implicitly include one or more such features. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present utility model. It will be apparent, however, to one skilled in the art that the present utility model may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present utility model with unnecessary detail.

Referring to fig. 1, the utility model shows a nuclear power plant cold source water intake marine organism cleaning structure which can be arranged in a nuclear power plant cold source water intake breakwater, wherein a nuclear power plant cold source water intake breakwater water intake inlet is provided with an entrance door interception net according to the conventional nuclear power plant to intercept marine organisms and sundries with larger volume. The rear end of the nuclear power plant cold source water intake marine organism cleaning structure is connected with a front pool of a nuclear power plant pump station, and the rear end of the nuclear power plant cold source water intake marine organism cleaning structure can be provided with at least one aperture interception net below 3 mm.

The cold source water intake marine organism cleaning structure of the nuclear power plant can comprise a dissolution cavity 10, a stabilizing tube 20, a floating pool 30 and a cold source water intake culvert 40 which are sequentially connected, wherein the dissolution cavity 10 is provided with a water inlet 11, a plurality of interfaces 12 connected with a carbon dioxide gas source are further arranged on the dissolution cavity 10, a control valve is arranged on the interfaces 12 to control the flow rate and the flow rate of the carbon dioxide gas, and preferably, the number of the interfaces 12 is four. Preferably, the port 12 is connected to a carbon dioxide gas source (carbon dioxide gas storage tank or carbon dioxide gas generation system) through a pipe, and a flowmeter may be provided on the port 12 or the pipe.

The cold source water intake culvert 40 is provided with a water flow channel 41, the cold source water intake culvert 40 is provided with a marine organism pumping platform 42 positioned above the water flow channel 41, and the marine organism pumping platform 42 is lower than the lowest sea level of the sea area. The floatation tank 30 is in communication with the marine organism pumping platform 42.

In some embodiments, the highest point of the dissolving cavity 10 is below the lowest sea level of the sea area, and the dissolving cavity 10 may be constructed of concrete and may have a generally spherical structure.

In some embodiments, the cross-sectional area of the floating pond 30 gradually decreases from the side near the stabilizer tube 20 to the side near the cold source water intake culvert 40, which may serve as a diversion function. Further, the floating pond 30 has a generally triangular or trapezoidal configuration in shape. The floating pond 30 may be constructed of concrete.

In some embodiments, the stabilizer tube 20 is used to stabilize the gas-liquid stream, the stabilizer tube 20 may be hollow cylindrical, and a submerged heater is provided at the outlet of the stabilizer tube 20 to heat the seawater.

In some embodiments, the upper end of the floating pond 30 is flush with the upper end of the cold source water culvert 40. The cold source water intake culvert 40 is generally a square structure, and the cold source water intake culvert 40 can be constructed by concrete.

In some embodiments, the cold source water culvert 40 is provided with at least one blocking net. The interception net is a metal interception net, and the interception net can be a copper alloy net or a high-strength zinc-aluminum alloy net, but is not limited to the copper alloy net or the high-strength zinc-aluminum alloy net, so that the metal isolation net has good durability. Preferably, the interception net has a mesh aperture of less than 3mm.

The nuclear power plant cold source water intake sea organism cleaning structure is applied as follows:

(1) Sea water at sea area of nuclear power plant passes through nuclear power plant and the cold source water outlet gate net enters a harbor pool of the nuclear power plant. The ocean floor seawater of the nuclear power plant flows into the dissolution cavity 10.

(2) And low-temperature carbon dioxide gas (lower than the ambient temperature) is introduced into the dissolution cavity 10, and simultaneously the seawater pressure in the dissolution cavity 10 can be increased by controlling the flow of the carbon dioxide through a control valve.

(3) The carbon dioxide gas is dissolved in the seawater (entrained marine organisms) in the dissolution chamber 10.

(4) Seawater and undissolved carbon dioxide gas pass through the stabilizing tube 20 to stabilize the gas-liquid flow rate and flow path. Undissolved carbon dioxide is in the upper layer and seawater is in the lower layer.

(5) The gas-liquid stream reaches the floatation tank 30 and undissolved carbon dioxide gas rises into the ambient air. The pressure and temperature of the seawater in the floating pond 30 are reduced, and carbon dioxide gas dissolved in the seawater is separated out, so that carbon dioxide bubbles are generated in the marine organism.

(6) And the marine organism floats upwards under the adsorption and buoyancy of carbon dioxide bubbles separated out from the seawater and the buoyancy of carbon dioxide gas in the marine organism.

(7) The marine organisms in the floating pond 30 float and gather on the sea water surface, and after reaching the marine organism pumping platform 42, the marine organisms can be pumped off shore or discharged outside the harbor pond by using a water pump.

(8) The lower seawater of the floating pond 30 is conveyed to the front pond of the pump station of the nuclear power plant through the cold source water intake culvert 40. In the process, an interception net with a pore diameter of less than 3mm can be added to intercept marine organisms according to the residual condition of the marine organisms.

It can be understood that the nuclear power plant cold source water intake marine organism cleaning structure uses the principle that the solubility of gas in water is reduced after temperature rise and pressure reduction, and the bubble is separated out to support the floating marine organism.

It can be understood that the nuclear power plant cold source water intake marine organism cleaning structure has the advantages that a plurality of interception nets with different pore sizes are not required to be arranged in the breakwater, and the structure is simpler. The device can float, gather and suck most marine organisms, has high marine organism cleaning efficiency, can reduce manual operation, and can effectively ensure the operation safety of the nuclear power unit.

It is to be understood that the foregoing examples merely illustrate preferred embodiments of the present utility model, and are not to be construed as limiting the scope of the utility model, but that it is to be understood that modifications and improvements to the above-described embodiments may be made by those skilled in the art without departing from the spirit of the utility model, and that it is intended to cover all modifications and improvements as fall within the scope of the utility model.

Claims (5)

1. The utility model provides a nuclear power plant cold source water intaking marine organism clear structure which is characterized in that, including dissolving cavity (10), stability tube (20), showy pond (30) and cold source water intaking culvert (40) that connect gradually, dissolve cavity (10) have water inlet (11), still be equipped with a plurality of interfaces (12) that are connected with the carbon dioxide gas source on dissolving cavity (10), cold source water intaking culvert (40) are equipped with rivers passageway (41), cold source water intaking culvert (40) are equipped with be located marine organism suction platform (42) above rivers passageway (41);

The floating pond (30) is communicated with the marine organism suction platform (42) to the atmosphere, and the floating pond (30) is constructed by concrete;

An underwater heater is arranged at the outlet of the stabilizing tube (20) to heat seawater;

the interface (12) is provided with a control valve for controlling the flow speed and the flow rate of the carbon dioxide gas, and the interface (12) is provided with a flowmeter;

The cold source water intake culvert (40) is provided with at least one interception net, the interception net is a metal interception net, and the mesh aperture of the interception net is smaller than 3mm.

2. The nuclear power plant cold source water intake marine organism removal structure according to claim 1, wherein a cross-sectional area of the floating pond (30) gradually decreases from a side near the stabilizing tube (20) to a side near the cold source water intake culvert (40).

3. The nuclear power plant cold source water intake marine organism cleaning structure according to claim 1, wherein the stabilizing tube (20) is hollow cylindrical.

4. The nuclear power plant cold source water intake marine organism cleaning structure according to claim 1, wherein the upper end of the floating pond (30) is arranged flush with the upper end of the cold source water intake culvert (40).

5. The nuclear power plant cold source water intake marine organism cleaning structure according to claim 1, wherein the number of the interfaces (12) is four.