Water drainage structure for overtopping water body in nuclear power plant area

Abstract

A nuclear power plant overtopping water drainage structure is characterized by comprising a retention wall, a wave wall and a sump, the retention wall is mounted on a factory pavement, the end of the factory pavement is provided with the wave wall and the sump, and the sump comprises a concrete bottom plate, a well body, a grating plate, a drainage pipe and an anti-backflow assembly. The well body is arranged on a concrete bottom plate, a grating plate is installed at a water inlet formed in the top of the well body, a water drainage pipe is connected to a water drainage port of the well body, and an anti-backflow assembly is arranged at a water drainage port of the water drainage pipe. The water collecting pits are evenly arranged along the channel, water is discharged into the sea through the drainage pipe made of the reinforced PVC material, then the nuclear power plant can easily cope with a large amount of overtopping water, and safe operation of the nuclear power plant is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to nuclear power drainage technical field especially relates to a nuclear power plant area overtopping water body drainage structure. BACKGROUND

[0002] China has a large population, with the continuous development of the country, the demand for electricity is growing. For this reason, China has built a number of coastal nuclear power plants. Because the nuclear power plant needs a lot of cooling water to cool the generator set in the operation process, and seawater is an ideal cooling water source, so the nuclear power plant is built in the seaside, which is conducive to obtaining seawater.

[0003] Most of the nuclear power plants are built in the southeast coastal areas. When entering the typhoon season, the water level and sea waves in the outer sea will become larger under the action of the typhoon. If the landing place of the typhoon is close to the nuclear power plant area, the sea waves will enter the nuclear power plant area under the action of the wind force, forming overtopping water body and threatening the safe operation of the nuclear power plant. UTILITARIAN CONTENT

[0004] In view of the above technical problems, the utility model provides a nuclear power plant area overtopping water body drainage structure, the water retaining wall, the wave retaining wall and the plant area pavement are surrounded to form a drainage open channel with a certain horizontal and vertical slope, the water collecting pit is uniformly arranged along the channel, and the drainage pipe of reinforced PVC material is used for drainage, and the sea is drained, so that the nuclear power plant can easily cope with the large number of overtopping water bodies, and the safe operation of the nuclear power plant is ensured.

[0005] In order to achieve the above purpose, the technical scheme of the utility model is as follows:

[0006] A nuclear power plant area overtopping water body drainage structure, characterized by comprising a water retaining wall, a wave retaining wall and a water collecting pit, the water retaining wall is installed on the plant area pavement, the wave retaining wall and the water collecting pit are arranged at the end of the plant area pavement, the water collecting pit comprises a concrete bottom plate, a well body, a grating plate, a drainage pipe and an anti-backflow assembly, the well body is arranged on the concrete bottom plate, the grating plate is arranged at the water inlet of the top of the well body, the drainage pipe is connected to the drainage port of the well body, and the anti-backflow assembly is arranged at the drainage port of the drainage pipe,

[0007] The water retaining wall is composed of a solid security net and a foundation wall, the solid security net is arranged on the foundation wall,

[0008] The wave retaining wall is composed of a reinforced concrete wall, two stone cushion layers, a gravel cushion layer and a concrete cushion layer, the bottom of the reinforced concrete wall is sequentially paved with the two stone cushion layers, the gravel cushion layer and the concrete cushion layer from bottom to top,

[0009] The drainage pipe is arranged in the reinforced concrete wall in an inclined structure, so that the gravity flow mode is fully utilized during drainage, and the energy consumption is reduced.

[0010] The grid plate is made of stainless steel, a stainless steel chain is connected to the grid plate, one end of the stainless steel chain is connected to a stainless steel anchor rod, and the other end of the stainless steel anchor rod is embedded in the inner wall of the well body,

[0011] The anti-backflow assembly is arranged on the torsade block, and the anti-backflow is filled with concrete between the connection of the torsade block and the wave-retaining wall.

[0012] Specifically, the torsade block is arranged below the block stone, and the torsade block and the block stone are arranged in a slope structure.

[0013] Specifically, the drain pipe is made of reinforced PVC material, which enhances the seawater corrosion resistance of the drain pipe.

[0014] Specifically, the joint between the well body and the reinforced concrete wall is filled with cement mortar.

[0015] The utility model discloses the beneficial effect of:

[0016] The water-retaining wall, the wave-retaining wall and the factory area pavement of the utility model enclose the drainage open channel with certain horizontal and vertical slopes, the water collecting pit is uniformly arranged along the channel position, when the overtopping water body crosses the wave-retaining wall, falls into the drainage open channel, and the water flow flows along the horizontal and vertical slope directions of the channel, and then the overtopping water body flows into the well body in the water collecting pit arranged along the channel, and then is discharged through the reinforced PVC material drain pipe, and is discharged into the sea, thereby making the nuclear power plant easily cope with the large attack of the overtopping water body, and guaranteeing the safe operation of the nuclear power plant.

[0017] The anti-backflow assembly arranged at the drainage port of the drain pipe has the wave-retaining effect when draining, so that the drainage is not affected by the pushing of the overtopping, thereby guaranteeing the normal operation of the drainage work.

[0018] The grid plate made of stainless steel is arranged at the water inlet of the well body, the debris in the overtopping water body is prevented from being directly discharged into the sea and polluting the environment, the grid plate is fixedly connected with the well body through the stainless steel anchor rod and the stainless steel chain, the stability of the grid plate is enhanced, and the grid plate cannot be displaced by typhoon. ACCURACY OF DRAWINGS

[0019] Figure 1 It is a plane schematic view of the nuclear power plant overtopping water body drainage structure of the utility model;

[0020] Figure 2 It is a sectional structure schematic view of the nuclear power plant overtopping water body drainage structure of the utility model;

[0021] Figure 3The utility model discloses a local structure schematic view of the stainless steel anchor rod and the stainless steel chain of the wave water body drainage structure of nuclear power plant area,

[0022] Figure 4 The utility model discloses a local structure schematic view of the anti-inflow assembly of the wave water body drainage structure of nuclear power plant area,

[0023] As shown in the drawing: 1. solid security net, 2. base wall, 3. reinforced concrete wall, 4. concrete bottom plate, 5. well body, 6. stainless steel anchor rod, 7. stainless steel chain, 8. grating plate, 10. drain pipe, 11. anti-inflow assembly, 12. plant area pavement, 13. mountain stone, 14. two piece stone cushion, 15. broken stone cushion, 16. concrete cushion, 17. twisted king block, 18. block stone. DETAILED DESCRIPTION

[0024] The technical scheme of the utility model will be described clearly and completely below in connection with the drawings, and obviously, the described embodiments are a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative efforts belong to the protection scope of the utility model.

[0025] In the description of the utility model, it is necessary to explain that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relation based on the drawing shown, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as the limitation of the utility model.

[0026] In the description of the utility model, it is necessary to explain that the terms "mounting", "connecting", "connection" should be understood broadly unless there is explicit provision and limitation, for example, can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through intermediate medium, can be the intercommunication of two elements. For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0027] Embodiment 1

[0028] As shown in the figure, the factory site pavement 12 is formed by backfilling the mountain stone 13, the setting position of the physical protection fence net 1 is referenced in combination with the position of the overtopping during the backfilling process, then the foundation wall 2 is poured and set on the factory site pavement 12, and the physical protection fence net 1 is installed on the foundation wall 2, so as to form a water retaining wall,

[0029] Then the fill block stone 18 and the king block 17 are thrown to form a slope structure, and the position space of the wave retaining wall and the water collecting pit is reserved between the factory site pavement 12 and the slope,

[0030] The wave retaining wall is composed of the reinforced concrete wall 3, two pieces of stone cushion layer 14, the gravel cushion layer 15 and the concrete cushion layer 16, the bottom of the reinforced concrete wall 3 is sequentially paved with the two pieces of stone cushion layer 14, the gravel cushion layer 15 and the concrete cushion layer 16 from bottom to top, and the water collecting pit is arranged at the wave retaining wall, the water collecting pit includes the concrete bottom plate 4, the well body 5, the grating plate 8, the drain pipe 10 and the anti-backflow assembly 11, the well body 5 is arranged on the concrete bottom plate 4, and the joint between the well body 5 and the reinforced concrete wall 3 is filled with cement mortar, the grating plate 8 is installed at the water inlet arranged at the top of the well body 5,

[0031] The grating plate 8 is made of stainless steel, the stainless steel chain 7 is connected to the grating plate 8, one end of the stainless steel chain 7 is connected to the stainless steel anchor rod 6, the other end of the stainless steel anchor rod 6 is embedded in the inner wall of the well body 5, the grating plate 8 is fixedly connected to the well body 5 through the stainless steel anchor rod 6 and the stainless steel chain 7, so as to enhance the stability of the grating plate 8 and prevent it from being moved by the typhoon,

[0032] The drain pipe 10 is connected to the drain port of the well body 5, the drain pipe 10 is made of reinforced PVC material, so as to enhance the seawater corrosion resistance of the drain pipe 10, the drain pipe 10 is arranged in an inclined structure in the reinforced concrete wall 3, so that the gravity flow mode is fully utilized during drainage, the energy consumption is reduced, and the anti-backflow assembly 11 is arranged at the drain port of the drain pipe 10, the anti-backflow assembly 11 is arranged in a concave structure, has a wave retaining effect during drainage, so that the drainage is not affected by the overtopping, and the normal operation of the drainage work is ensured,

[0033] The anti-backflow assembly 11 is arranged on the king block 17, and the anti-backflow assembly 11 is filled with concrete at the connection between the anti-backflow assembly 11 and the king block 17 and the reinforced concrete wall 3 of the wave retaining wall.

[0034] Embodiment 2

[0035] The water retaining wall, the wave retaining wall and the plant area pavement 12 enclose the drainage open channel with certain horizontal and vertical slopes, and the water collecting pits are evenly arranged along the channel, when the overtopping water body crosses the reinforced concrete wall body 3, the overtopping water body will fall into the drainage open channel composed of the water retaining wall, the wave retaining wall and the plant area pavement, the water flow flows along the horizontal and vertical slopes of the channel, finally the overtopping water body flows into the well body 5 in the water collecting pit arranged along the channel, then is discharged through the reinforced PVC material drainage pipe 10, is discharged into the sea, and the nuclear power plant can easily cope with the large attack of the overtopping water body, and the safe operation of the nuclear power plant is ensured.

[0036] And the overtopping water body enters the well body 5, the sundries in the water are filtered through the filtering effect of the grid plate 8, and the impurities in the water are prevented from being directly discharged into the sea to pollute the environment.

[0037] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. The various components mentioned in the utility model are the common technology in the prior art, and the technical personnel in the industry should understand that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only for illustrating the principle of the utility model, and the utility model will have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed for protection. The protection scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A drainage structure for overwater drainage in a nuclear power plant area, characterized in that... The system includes a retaining wall, a wave barrier, and a sump pit. The retaining wall is installed on the factory road surface. A wave barrier and a sump pit are set at the end of the factory road surface. The sump pit includes a concrete base slab, a well body, a grating plate, a drainage pipe, and an anti-backflow component. The well body is set on the concrete base slab. A grating plate is installed at the water inlet at the top of the well body. A drainage pipe is connected to the drainage outlet of the well body. An anti-backflow component is set at the drainage port of the drainage pipe.

2. The wave-crossing water drainage structure for a nuclear power plant area according to claim 1, characterized in that... The retaining wall consists of a solid protective net and a foundation wall, with the solid protective net installed on the foundation wall.

3. A wave-crossing water drainage structure for a nuclear power plant area according to claim 1, characterized in that... The wave-breaking wall consists of a reinforced concrete wall, a two-stone cushion layer, a crushed stone cushion layer, and a concrete cushion layer. The bottom of the reinforced concrete wall is laid with a two-stone cushion layer, a crushed stone cushion layer, and a concrete cushion layer in sequence from bottom to top.

4. A wave-crossing water drainage structure for a nuclear power plant area according to claim 3, characterized in that... The drainage pipe is installed in an inclined structure within the reinforced concrete wall.

5. A wave-crossing water drainage structure for a nuclear power plant area according to claim 1, characterized in that... The grating is made of stainless steel, and a stainless steel chain is connected to the grating. The stainless steel chain is connected to one end of a stainless steel anchor rod, and the other end of the stainless steel anchor rod is embedded in the inner wall of the well body.

6. A wave-crossing water drainage structure for a nuclear power plant area according to claim 1, characterized in that... The anti-backflow component is installed on the T-shaped block, and the connection between the anti-backflow component, the T-shaped block, and the wave-breaking wall is filled with concrete.

7. A wave-crossing water drainage structure for a nuclear power plant area according to claim 6, characterized in that... A stone block is placed below the twisted king-shaped block, and the twisted king-shaped block and the stone block are arranged in a sloping structure.

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