CN210127451U - High-strength interception net system for water intake of nuclear power plant - Google Patents
High-strength interception net system for water intake of nuclear power plant Download PDFInfo
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- CN210127451U CN210127451U CN201920488935.7U CN201920488935U CN210127451U CN 210127451 U CN210127451 U CN 210127451U CN 201920488935 U CN201920488935 U CN 201920488935U CN 210127451 U CN210127451 U CN 210127451U
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Abstract
The utility model relates to a nuclear power plant water intake high strength interception net system, which comprises a first interception net mechanism, wherein the first interception net mechanism comprises a net bag interception unit and a plane interception unit arranged above the net bag interception unit, the net bag interception unit comprises a plurality of net bags used for intercepting under water and collecting intercepted marine organisms, the plane interception unit comprises a blocking net piece connected above the net bag and used for preventing the marine organisms from crossing the sea surface above the net bag, the nuclear power plant water intake high strength interception net system adopts the reasonable arrangement of the net bag interception unit and the plane interception unit, the marine organisms are intercepted and finally flow into the net bag, the adhesiveness of the net is reduced, thus the cold source rate of the marine organisms can be effectively improved, compared with the common net tool, the net tool has longer service life, and the reliability is further comprehensively improved, effectively solves the problem that the normal production of the power plant is influenced by the outbreak of marine organisms in the sea area of the coastal power plant.
Description
Technical Field
The utility model relates to a belong to nuclear power plant safety field, concretely relates to nuclear power plant's intake high strength interception net system.
Background
The safety operation and reliability of a nuclear power plant are directly influenced by the operating state of a water intake of the nuclear power plant, and in order to deal with the invasion of marine organisms in the nuclear power plant, a method which is usually adopted is to arrange an interception net or remove the interception net in a manual salvage mode, however, the conventional interception net mostly adopts an anchor block and a buoy to fix the interception net, the wind and wave resistance of the structure is weaker, the stress condition of the interception net is complex at the front end of an intake canal with poorer shielding conditions under the action of wind, waves and currents, especially when a large amount of marine organisms break out, the simple net pulling type structure is weak in impact resistance from the stress angle, and the structure safety coefficient is lower; moreover, the conventional interception net is mostly made of a nylon net, so that the conventional interception net has poor durability, corrosion resistance and marine organism adhesion prevention performance in a marine environment, needs to be replaced frequently, and has high maintenance cost; in addition, the conventional interception net cannot realize full-face interception. If gap leaks exist among the blocking net, the slope surface of the water inlet channel and the riverbed surface, the gaps leak form a channel for marine organisms to enter a water intake of the power station; the bottom of the interception net and the two sides of the diversion dike are rubbed by the twisted king-shaped blocks and the stones in the stormy wave environment, so that the abrasion is very strong, and the phenomenon that marine organisms or floaters cross the net in the stormy wave environment is caused because the existing interception net is fixed in a floating way by adopting the floating pontoon in a floating way.
Disclosure of Invention
The utility model aims at overcoming the not enough of prior art and providing a nuclear power plant intake high strength interception net system.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
a high-strength interception net system for a water intake of a nuclear power plant comprises a first interception net mechanism, wherein the first interception net mechanism comprises a net bag interception unit and a plane interception unit arranged above the net bag interception unit, the net bag interception unit comprises a plurality of net bags used for intercepting under water and collecting intercepted marine organisms, the plane interception unit comprises a blocking net piece connected above the net bags and used for preventing the marine organisms from passing through the sea surface above the net bags, the first interception net mechanism further comprises at least two support frames arranged at the water intake of the nuclear power plant, a first steel wire, a second steel wire, a third steel wire and a fourth steel wire for connecting the adjacent two net bags are sequentially arranged between the support frames from top to bottom, the upper part of the blocking net piece is hung on the first steel wire, the lower part of the blocking net piece and the upper part of the net bags are connected through the second steel wire and hung on the second steel wire, the lower part of the net bag is hung on the third line.
Preferably, the string bag comprises a front bag and a rear bag which are communicated, and the opening of the string bag is positioned at the front end of the front bag.
Preferably, the front pocket is detachably connected to the rear pocket. The marine life is finally collected in the back pocket, and the back pocket can be detached and replaced when the back pocket is full.
Preferably, the opening of the net bag is quadrilateral, the front bag is provided with a first side surface and a second side surface which are positioned at the upper side and the lower side, and a third side surface and a fourth side surface which are positioned at the left side and the right side, and the widths of the first side surface, the second side surface, the third side surface and the fourth side surface are gradually reduced from front to back.
Preferably, the second side is disposed to be inclined upward from front to rear.
Preferably, the net body of the net bag comprises a supporting layer, a first intercepting layer and a second intercepting layer which are arranged in sequence. The mesh size of the supporting layer is 0.8-1.2 m, the mesh size of the first intercepting layer is 4-6 cm, and the mesh size of the second intercepting layer is 9-21 mm. Adopt interception protection layer upon layer, constantly refine, mutual complementation, with marine organism interception on net lifting, through the effect of water conservancy diversion and the difficult adnexed characteristic of net itself, finally collect in afterbody back pocket, and the intensity of reinforcing interception net that can be very big.
Preferably, the second interception layer is of an knotless monofilament structure made of ultra-high molecular weight polyethylene, and meshes of the second interception layer are hexagonal. The ultra-high molecular weight polyethylene has the advantages of corrosion resistance, impact resistance, high strength and non-adhesiveness, the seaweed can hardly adhere to the polyethylene, and even if the seaweed adheres to the polyethylene, meshes of the seaweed can not be blocked, and the polyethylene can be sprayed by a water gun; the block net has the advantages of light weight, the block net resistance is reduced by more than 40% compared with the common net, the net weight and the water flow drag force are effectively reduced, the net is more easily and accurately distributed, and the service lives of the net and the rope are prolonged;
in addition, the mesh on second interception layer adopts hexagonal structural design, specifically is nos knot, monofilament, hexagon mesh, and it can further avoid many meshes marine organism to adhere to, effectively improves the marine alga and hangs the net, and convenient clearance just increases the rate of permeating water.
Preferably, the first wire is comprised of galvanized steel wire. The galvanized steel wire can straighten the upper end of the net as much as possible and keep the structure of the net.
Preferably, the third line is connected with a gravity chain, and the gravity chain is connected with a plurality of anchor blocks positioned on the seabed through a plurality of steel wire ropes. The balance weight anchor chain is added at the bottom of the net and connected to the bottom line of the net, and the key points are connected with the anchor blocks, so that the phenomenon that the net body is drained in severe weather is prevented.
Preferably, the intercepting net system comprises a second intercepting net mechanism and a third intercepting net mechanism which are sequentially arranged in front of the first intercepting net mechanism. The integral intercepting net system also comprises a second intercepting net mechanism and a third intercepting net mechanism which are positioned in front of the first intercepting net mechanism and are matched with the first intercepting net mechanism for use, and the first intercepting net mechanism carries out the last intercepting.
Due to the implementation of the above technical scheme, compared with the prior art, the utility model have the following advantage:
the utility model discloses a nuclear power plant intake high strength interception net system, through rigorous hydrodynamic force computational analysis, combine the site conditions design to go on, adopt the rational arrangement of string bag interception unit and plane interception unit, marine organism interception and final marine organism flow to string bag in, reduce the adhesion of net, the interception rate that can effectual improvement marine organism like this, general netting gear has stronger life relatively, and then promote the cold source reliability comprehensively, effectively solve coastal power plant sea area marine organism outbreak and influence the problem of the normal production of power plant.
Drawings
Fig. 1 is a schematic view of the overall structure of a first intercepting net mechanism of the present invention;
FIG. 2 is a schematic view of the three-dimensional structure of the net bag of the present invention;
FIG. 3 is a schematic view of the net body structure of the net bag and the net body structure of the blocking net piece of the present invention;
fig. 4 is a schematic structural diagram of a second interception layer according to the present invention;
wherein: 100. a barrier mesh; 101. a front pocket; 102. a back pocket; 11. a support layer; 12. a first interception layer; 13. a second interception layer; d1, first wire; d2, second wire; d3, third wire; d4, fourth wire.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 4, the high-strength interceptor system for the water intake of the nuclear power plant comprises a first interceptor mechanism, the first interceptor mechanism comprises a string bag intercepting unit and a plane intercepting unit arranged above the string bag intercepting unit, the string bag intercepting unit comprises a plurality of string bags for intercepting underwater and collecting intercepted marine organisms, the plane intercepting unit comprises a barrier net piece 100 connected above the string bags for preventing the marine organisms from passing through the sea surface above the string bags, the first interceptor mechanism further comprises at least two support frames arranged at the water intake of the nuclear power plant, a first steel wire d1, a second steel wire d2, a third steel wire d3 and a fourth steel wire d4 connecting two adjacent steel wires, the upper part of the barrier net piece 100 is hung on a first steel wire d1, the lower part of the barrier net piece 100 and the upper part of the string bag are connected by a second steel wire d2 and hung on a second steel wire d2, the lower part of the net bag is hung on the third line d 3.
The interception net system comprises a second interception net mechanism and a third interception net mechanism which are sequentially arranged in front of the first interception net mechanism. The integral intercepting net system also comprises a second intercepting net mechanism and a third intercepting net mechanism which are positioned in front of the first intercepting net mechanism and are matched with the first intercepting net mechanism for use, and the first intercepting net mechanism carries out the last intercepting.
Specifically, the string bag includes a front bag 101 and a rear bag 102 which are disposed in communication, and an opening of the string bag is located at a front end of the front bag 101. The front pocket 101 is detachably coupled to the rear pocket 102. Marine life is finally collected in the rear bag 102, and the rear bag 102 can be disassembled and replaced when the rear bag 102 is filled.
Further, as shown in fig. 2, the opening of the net bag is quadrilateral, the front bag 101 has a first side and a second side located at the upper and lower sides, and a third side and a fourth side located at the left and right sides, and the widths of the first side, the second side, the third side and the fourth side are gradually reduced from front to back; and the second side surface is obliquely arranged from front to back. That is, the bottom surface of the front bag extends obliquely to the upper rear direction, so that when the first intercepting net mechanism is used in seawater, the position of the rear bag is relatively high and small, and the rear bag is convenient to detach and replace.
Further, as shown in fig. 3, the net body of the net bag and the net body of the barrier net 100 each include a support layer 11, a first barrier layer 12, and a second barrier layer 13, which are sequentially disposed. The meshes of the supporting layer 11 are square, and the side length of the square is 1 m; the meshes of the first intercepting layer 12 are square, and the side length of the square is 5 cm; the second interception layer 13 is of a knotless monofilament structure made of ultra-high molecular weight polyethylene, and the meshes of the second interception layer 13 are hexagonal (see fig. 4), and the side length of the hexagon is 10mm or 20 mm. The supporting layer 11 is used as a main framework of the blocking net and supports the whole net, the meshes of the first intercepting layer 12 are large, large-size marine organisms are intercepted, and the meshes of the second intercepting layer 13 are small and small in size, so that the marine organisms are intercepted. The marine organisms are intercepted on the net lifting by adopting layer-by-layer interception protection, continuous refinement and mutual supplement, and finally collected in the rear pocket 102 at the tail part through the diversion effect and the characteristic that the net is not easy to adhere, and the strength of the intercepting net can be greatly enhanced. The ultra-high molecular weight polyethylene has the advantages of corrosion resistance, impact resistance, high strength and non-adhesiveness, the seaweed can hardly adhere to the polyethylene, and even if the seaweed adheres to the polyethylene, meshes of the seaweed can not be blocked, and the polyethylene can be sprayed by a water gun; the block net has the advantages of light weight, the block net resistance is reduced by more than 40% compared with the common net, the net weight and the water flow drag force are effectively reduced, the net is more easily and accurately distributed, and the service lives of the net and the rope are prolonged; in addition, the mesh of second interception layer 13 adopts hexagonal structural design, specifically is nos knot, monofilament, hexagon mesh, and it can further avoid many meshes marine organism to adhere to, effectively improves the marine alga and hangs the net, and convenient clearance just increases the rate of permeating water.
Further, the first wire d1 is made of a galvanized steel wire. The galvanized steel wire can straighten the upper end of the net as much as possible and keep the structure of the net. The third wire d3 is connected with a gravity chain, and the gravity chain is connected with a plurality of anchor blocks positioned on the seabed through a plurality of steel wire ropes. Because the diversion dike both sides are for turning round king's block and indiscriminate stone and constitute, along with stormy weather, the wearing and tearing between block net and the stone are very strong, reduce the life of net, bring certain risk. Therefore, the balance weight anchor chain is added at the bottom of the net and connected to the bottom line of the net, the key point is connected with the anchor block, the bottom of the net body can be prevented from moving, abrasion between the net body and the stone is prevented, and the phenomenon that the net body is drained in severe weather is prevented.
To sum up, the utility model discloses a nuclear power plant intake high strength interception net system through rigorous hydrodynamic force computational analysis, combines the site conditions design to go on, adopts the rational arrangement of string bag interception unit and plane interception unit, and marine life interception and final marine life flow to the string bag in, reduce the adhesion of net, like this can effectual improvement marine life's interception rate, general netting gear has stronger life relatively, and then promotes the cold source reliability comprehensively, effectively solves coastal power plant sea area marine life outbreak and influences the problem of the normal production of power plant. In addition, the lower part of the blocking net piece is connected with the upper part of the net bag through a second steel wire, and the blocking net piece and the net bag complement each other, so that the structural strength of the net bag is ensured, and the net bag is prevented from being pulled out of the water surface forcibly; thereby avoiding the fatigue of the net structure caused by long-term wind blowing and sunshine. And the blocking net piece can prevent the influence of overtopping, so that marine organisms can enter the water taking area by crossing the net bag.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (10)
1. The utility model provides a nuclear power plant intake high strength interception net system which characterized in that: the intercepting net system comprises a first intercepting net mechanism, the first intercepting net mechanism comprises a net bag intercepting unit and a plane intercepting unit arranged above the net bag intercepting unit, the net bag intercepting unit comprises a plurality of net bags used for intercepting underwater and collecting intercepted marine organisms, the plane intercepting unit comprises a blocking net piece connected above the net bag and used for preventing the marine organisms from crossing the sea surface above the net bag, the first intercepting net mechanism further comprises at least two support frames arranged at a water inlet of a nuclear power plant, a first steel wire, a second steel wire, a third steel wire and a fourth steel wire connecting the two adjacent net bags are sequentially arranged between the support frames from top to bottom, the upper part of the blocking net piece is hung on the first steel wire, the lower part of the blocking net piece and the upper part of the net bag are connected and hung on the second steel wire through the second steel wire, the lower part of the net bag is hung on the third line.
2. The high-strength interception net system for the water intake of the nuclear power plant according to claim 1, characterized in that: the string bag is including preceding pocket and the back pocket that is linked together the setting, the opening of string bag is located the front end of preceding pocket.
3. The high-strength interception net system for the water intake of the nuclear power plant according to claim 2, characterized in that: the front pocket is detachably connected with the rear pocket.
4. The high-strength interception net system for the water intake of the nuclear power plant according to claim 2, characterized in that: the opening of the net bag is quadrilateral, the front bag is provided with a first side surface and a second side surface which are positioned at the upper side and the lower side, and a third side surface and a fourth side surface which are positioned at the left side and the right side, and the widths of the first side surface, the second side surface, the third side surface and the fourth side surface are gradually reduced from front to back.
5. The high-strength interception net system for the water intake of the nuclear power plant according to claim 4, characterized in that: the second side face is arranged in an inclined mode from front to back.
6. The high-strength interception net system for the water intake of the nuclear power plant according to claim 1, characterized in that: the net body of the net bag comprises a supporting layer, a first intercepting layer and a second intercepting layer which are sequentially arranged, wherein the size of meshes of the supporting layer is 0.8-1.2 m, the size of meshes of the first intercepting layer is 4-6 cm, and the size of meshes of the second intercepting layer is 9-21 mm.
7. The high-strength interception net system for the water intake of the nuclear power plant according to claim 6, characterized in that: the second interception layer is of a knotless monofilament structure made of ultra-high molecular weight polyethylene, and meshes of the second interception layer are hexagonal.
8. The high-strength interception net system for the water intake of the nuclear power plant according to claim 1, characterized in that: the first wire is made of galvanized steel wire.
9. The high-strength interception net system for the water intake of the nuclear power plant according to claim 1, characterized in that: and the third line is connected with a gravity chain, and the gravity chain is connected with a plurality of anchor blocks positioned on the seabed through a plurality of steel wire ropes.
10. The high-strength interception net system for the water intake of the nuclear power plant according to claim 1, characterized in that: the intercepting net system comprises a second intercepting net mechanism and a third intercepting net mechanism which are sequentially arranged in front of the first intercepting net mechanism.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109914351A (en) * | 2019-04-11 | 2019-06-21 | 苏州热工研究院有限公司 | A kind of nuclear power plant's intake high intensity intercept net system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109914351A (en) * | 2019-04-11 | 2019-06-21 | 苏州热工研究院有限公司 | A kind of nuclear power plant's intake high intensity intercept net system |
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