WO2022116525A1

WO2022116525A1 - Draw-in and cast device for nuclear power circulating water prefiltration system

Info

Publication number: WO2022116525A1
Application number: PCT/CN2021/103329
Authority: WO
Inventors: 祝奇超; 王增琛; 吴庆旺; 王广聚; 潘国栋; 陈静; 南卫; 辛文军; 何小奇; 胡建国; 王龙生
Original assignee: 深圳中广核工程设计有限公司; 中广核工程有限公司; 江苏电力装备有限公司; 山东滨海新材料科技有限公司
Priority date: 2020-12-02
Filing date: 2021-06-29
Publication date: 2022-06-09
Also published as: CN112774281A

Abstract

The present invention relates to a draw-in and cast device for a nuclear power circulating water prefiltration system, comprising cast cables connected onto net bags, net draw-in cables connected onto the net bags, tensioning cables connected onto the net bags, a draw-in and cast platform, first draw-in and cast units arranged on the draw-in and cast platform, second draw-in and cast units arranged on the draw-in and cast platform, and third draw-in and cast units arranged on the draw-in and cast platform. The first draw-in and cast units are connected to the net draw-in cables so as to drive the net draw-in cables to be lengthened or shortened to implement net cast or net draw-in; the second draw-in and cast units are connected to the cast cables so as to drive the cast cables to be lengthened or shortened to implement net draw-in or net cast; the third draw-in and cast units are connected to the tensioning cables so as to drive the tensioning cables to be lengthened or shortened to assist net cast by the cast cables. The draw-in and cast device for a nuclear power circulating water prefiltration system achieves full-section interception for the filtration system, so that the filtration system is effectively protected, and the efficiency of replacing the filtration system can be improved.

Description

Nuclear power circulating water pre-filtration system retractable device

technical field

The invention relates to the field of nuclear power circulating water safety protection, and more particularly, to a retractable device for a nuclear power circulating water pre-filtration system.

Background technique

At present, due to the increasing number of marine organisms or foreign matter in the nuclear power plant, the cooling source system in the nuclear power plant is blocked, resulting in a reduction in the power of the unit, and the gradual increase in shutdown events; even posing a threat to the use of heat sinks, so nuclear power plants Cold source water must take into account the impact of marine water biodiversity during filtration to effectively prevent safety accidents. At present, the commonly used filter system is usually a filter screen. Most of the filter screens can only simply filter the garbage or floating objects in the water. They cannot intercept and filter fish and shrimp in the ocean, and the filter screen is not easy to clean. Intercept marine life or foreign objects.

In order to solve the above problems, in the related art, there is "a series net pocket type nuclear power cold source filtration system" (utility model CN 208385019 U), which has been used in practical projects. This technology includes a net bag deployment device. The deployment device includes a fixed pulley, a twister, a traction rope and an abutment. The closing end of the guiding net is connected to the starting end of the collecting net. The abutment is vertically fixed, so The top and bottom of the pier are respectively installed with fixed pulleys, the left end of the traction rope is connected to the rightmost connection point at the bottom of each series of net pockets in turn, and the right end of the traction rope is connected to the leftmost connection point of the bottom of the series of net pockets in turn, and the traction rope It is wound on the winch through the fixed pulleys at the bottom and top of the abutment. This technology solves the cumbersome problem of mesh deployment and improves work efficiency.

The nuclear power circulating water pre-filtration system of the related art mainly has the following defects:

(1) This technology consists of a deployment device composed of manual winches (or electric winches), pulleys, traction ropes, piers, etc., which cannot realize the full-section layout of the net, that is, it cannot be placed at the bottom and both sides of the water-passing section. It forms an effective fixation with the pile platform, which makes it impossible to achieve full-section interception during the work process. When faced with a large-scale outbreak of marine organisms, the realization of its functions is discounted.

(2) This technology requires surface operations and the cooperation of ships, which has a high occupational safety risk and low work efficiency.

technical problem

The technical problem to be solved by the present invention is to provide an improved retractable device for a nuclear power circulating water pre-filtration system.

technical solutions

The technical solution adopted by the present invention to solve the technical problem is as follows: constructing a retractable device for a nuclear power circulating water pre-filtering system, wherein the filtering system includes at least one net pocket, including a laying cable connected to the net pocket, connected to the The net collecting cable on the net pocket, the tensioning cable connected to the net pocket, the receiving and unloading table, the first receiving and unloading unit arranged on the receiving and unloading table, and the second receiving and unloading unit arranged on the receiving and unloading table , and a third retractable unit arranged on the retractable platform;

The first retracting and unwinding unit is connected with the netting cable to drive the telescopic movement of the netting cable to realize net distribution or netting;

The second retractable unit is connected with the deployment cable to drive the deployment cable to telescopically move to achieve net collection or net distribution;

The third retractable unit is connected with the tension cable to drive the tension cable to extend and retract to assist the deployment cable mesh.

Preferably, the first retractable unit comprises a first fixed pulley disposed on the retractable platform and connected with the net take-up cable, provided on the retractable platform and connected with the net take-up cable to A first hoist that drives the retracting and retracting cables of the netting.

Preferably, the second retractable unit comprises a second fixed pulley provided on the retractable platform and connected with the deployment cable, and a second fixed pulley provided on the retractable platform and connected with the deployment cable a second hoist for driving the deployment cable to extend and retract;

The third retractable unit includes a third fixed pulley disposed on the retractable platform and connected with the tension cable, and a third fixed pulley disposed on the retractable platform and connected with the tension cable to drive the Third hoist for taut cables telescopic.

Preferably, the deployment cable is detachably arranged at the bottom of the net opening of the net pocket;

The tensioning cable includes a main rope and a plurality of sub-ropes; one end of each sub-rope is connected to the main rope and the other end is connected to the side of the mesh port;

The main rope is connected to the third retractable unit.

Preferably, the storage platform comprises a base, a pile foundation arranged on the foundation, and a platform arranged on the pile foundation;

The first retractable unit and the second retractable unit are arranged on the platform at intervals.

Preferably, the base is provided with a bottom beam;

The net pocket is provided with a first anchor ring which is detachably connected with the deployment cable.

Preferably, a plurality of second anchor rings which are detachably penetrated with the tension cable are distributed on the pile foundation at intervals along the longitudinal direction.

Preferably, a third anchor ring connected to the tension cable is provided at the net opening of the net pocket.

Preferably, the net pocket is provided with a plurality of fourth anchor rings detachably connected with the net take-up cable.

Preferably, there are multiple net pockets, and a plurality of the net pockets are arranged side by side;

There are two groups of the first retractable units, and the two groups of the first retractable units are spaced apart and arranged side by side;

There are two groups of the second retractable units, and the two groups of the second retractable units are spaced apart and arranged side by side;

There are two groups of the third retractable units, the two groups of the third retractable units are spaced apart and arranged side by side, and the two groups of the third retractable units and the second retractable units are arranged side by side.

Preferably, the first winch, the second winch and/or the third winch are electric winches or manual winches.

beneficial effect

The nuclear power circulating water pre-filtering system retracting device of the present invention has the following beneficial effects: the nuclear power circulating water pre-filtering system retracting device can drive the retracting cable to retract through the first retracting unit to realize retracting the web, and The second retractable unit drives the deployment cable to extend and retract to realize the net distribution, and the third retractable unit drives the tension cable to extend and retract to assist the deployment cable to fabricate the screen, so that the full-section interception of the filter system can be realized, and the The filter system is effectively protected and can be completed on the platform without diving operations and surface operations, which can save labor costs and improve the replacement efficiency of the filter system.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, in which:

FIG. 1 is a top view of a retractable device of a nuclear power circulating water pre-filtration system in some embodiments of the present invention;

Fig. 2 is a partial structural schematic diagram of the retractable device of the nuclear power circulating water pre-filtration system shown in Fig. 1 of the present invention;

Fig. 3 is a partial structural schematic diagram of another angle of the retractable device of the nuclear power circulating water pre-filtration system shown in Fig. 2 of the present invention;

Fig. 4 is a side view of the storage device of the nuclear power circulating water pre-filtration system shown in Fig. 1 of the present invention.

Embodiments of the present invention

In order to have a clearer understanding of the technical features, objects and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

Figures 1 and 2 show the retractable device of the nuclear power circulating water pre-filtration system of the present invention. The retractable device of the nuclear power circulating water pre-filtration system can be used to deal with the increasingly serious sea creatures invading the cooling water system of the nuclear power plant, and avoid the occurrence of shutdown events. The nuclear power circulating water pre-filtration system retraction device solves the problem of mechanized deployment of nets, can achieve full-section interception of the filter system, and effectively protect the filter system, and can be completed on the platform without diving operations and surface operations. It can save labor costs and improve the replacement efficiency of the filter system.

As shown in FIG. 1 to FIG. 3 , the filter system 10 can be used to filter foreign objects in the ocean, such as garbage in the ocean, and can be used to intercept marine organisms, so as to solve the problems of biodiversity, mesh cloth, etc. in the current nuclear power cold source filtration process. Putting cumbersome, and garbage collection problems. In some embodiments, the filtration system 10 includes a plurality of net pockets 11 arranged side by side, and the plurality of net pockets 11 can be connected in series. In some embodiments, the number of the net pockets 11 may be three. Of course, it is understood that in some other embodiments, the number of the net pockets 11 may not be limited to three, but may also be two or more than three. In some embodiments, the net pocket can be in the shape of a terrace or a conical shape. Of course, it can be understood that in some other embodiments, the net pocket is not limited to be in the shape of a terrace or a conical shape. It can be understood that, in some embodiments, the net pocket 11 can be a conventional net pocket. In some embodiments, a first anchor ring 12 may be provided on the net pocket 11 , the first anchor ring 12 may be located on the bottom surface of the mesh opening of the net pocket 11 , and there may be multiple first anchor rings 12 , in some embodiments , the number of the first anchor rings 12 can be four, and the four first anchor rings 12 are distributed on the bottom surfaces of the mesh openings of the three net pockets 11 . In some embodiments, third anchor rings 13 may be provided at the mesh port of the net pocket 11 and located on two opposite sides of the mesh port, and three third anchor rings may be provided on each side of the mesh port. It can be understood that , in some other embodiments, the number of the third anchor rings may not be limited to three. In some embodiments, a plurality of fourth anchor loops may be provided on the net pocket 11 , and the plurality of fourth anchor loops may be arranged side by side and at intervals along the length direction of the net pocket 11 . The fourth anchor loops may be in multiple rows, and the multiple rows of fourth anchor loops may be arranged corresponding to the plurality of net pockets 11 , and each row of fourth anchor loops may include a plurality of fourth anchor loops spaced along the length direction of the net pockets 11 .

The nuclear power circulating water pre-filtration system retracting device can be used in the nuclear power circulating water pre-filtration system, can solve the problem of mechanized deployment of the net bag 11 in the pre-filtration system, and solve the labor cost; The pre-filtration system is effectively protected from the bottom and sides, and the net bag 11 can be deployed and replaced on the platform, avoiding diving operations and surface operations, and can be used to improve the replacement efficiency of the net bag 11 . In some embodiments, the retractable device for the nuclear power circulating water pre-filtration system may include a retractable platform 20, a deployment cable 30, a net retractable cable 40, a tension cable 50, a first retractable unit 60, and a second retractable unit 70 and the third retractable unit 80 . The retractable table 20 can be placed in the water and can be arranged out of the water surface, and can be installed for the first retractable unit 60, the second retractable unit 70, and the third retractable unit 80, which is convenient for the nuclear power circulating water pre-filtration system Operation of the retractable device. The deployment cable 30 can be connected to the net pocket 11 and can be used to deploy the net pocket 11 . Specifically, the deployment cable 30 can be detachably connected to the first anchor ring 12 . The net take-up cable 40 can be connected with the net pocket 11 and can be used for net take-up. Specifically, in some embodiments, the net take-up cable 40 is detachably connected to the fourth anchor ring. The tensioning cable 50 can be connected with the net pocket 11 to assist in the deployment of the net, and the tensioning cable 50 can be detachably connected to the third anchor ring 13 . The first retractable unit 60 is disposed on the retractable platform 20 and can be connected to the net take-up cable 40, and can be used to drive the net take-up cable 40 to move in and out, thereby realizing net take-up. The second storage unit 70 can be disposed on the storage table 20 , and can be arranged side by side and spaced apart from the front and rear. The second storage unit 70 can be located in front of the storage table 20 . The second retractable unit 70 can be connected with the deployment cable 30, and can be used to drive the deployment cable 30 to telescopically move to achieve net distribution. The third retractable unit 80 can be arranged side by side with the second retractable unit 70, And it can be connected with the tensioning cable 50, which can drive the tensioning cable 50 to stretch and stretch to tension the net pocket 11 in the cloth net, thereby assisting in the cloth cloth.

Further, in some embodiments, the receiving platform 20 may be partially extended into the water and disposed, and the receiving platform 20 may include a base 21 , a pile foundation 22 and a platform 23 . The base 21 can be set underwater, and the base 21 can be roughly in the shape of a rectangular parallelepiped. In some embodiments, the base 21 can be a cement board. Of course, it is understood that in other embodiments, the base 21 can also be a metal plate, which is not limited to a cement board. The metal plate can be coated with anti-corrosion. Of course, the metal sheet can also be selected as a metal material with anti-corrosion properties. Of course, it can be understood that, in other embodiments, the base 21 may not be limited to be in the shape of a rectangular parallelepiped. The pile foundation 22 can be cylindrical, and the pile foundation 22 can protrude toward the water surface along a direction perpendicular to the base 21 . The number of pile foundations 22 may be four, and the four pile foundations 22 may be arranged at intervals. The four pile foundations 22 can be used to support the platform 23 . Of course, it can be understood that in other embodiments, the pile foundations 22 may not be limited to four. In some embodiments, the pile foundation 22 can be integrally formed with the base 21 , specifically, the pile foundation 22 can be a metal cylinder, and the metal cylinder can be coated with an anti-corrosion coating, and the pile foundation 22 can be It is integrally formed with the base 21 by welding or casting. Of course, it can be understood that, in some embodiments, the pile foundation 22 can be a cement column, which can be integrally formed with the base 21 by casting. In some embodiments, a plurality of second anchor rings 221 can be provided on the pile foundation 22; the plurality of second anchor rings 221 can be distributed along the longitudinal interval of the pile foundation 22, and can be used for the detachment of the tension cable 50 Threaded to position and install the tensioning cable 50 . The platform 23 can be disposed at one end of the pile foundation 22 that penetrates out of the water surface, and is connected to the pile foundation 22 respectively. In some embodiments, the platform 23 may be integrally formed with the pile foundation 22 , specifically, the platform 23 may be integrally formed with the pile foundation 22 by welding, casting or pouring. In some embodiments, a plurality of installation platforms may be provided on the platform 23 , and the plurality of installation platforms may be used for installation of the first storage unit 60 , the second storage unit 70 and the third storage unit 80 . In some embodiments, the number of the mounting platforms may be four, and the four mounting platforms may be distributed at four top corners of the platform 23 . In some embodiments, a bottom beam 24 may also be provided on the base 21 . The bottom beam 24 can be arranged laterally and located between two adjacent pile foundations 22 , and the filtering device 10 can be arranged between two adjacent pile foundations 22 .

Further, in some embodiments, the number of the deployment cables 30 may be two, and the two deployment cables 30 may be located on two opposite sides of the filter system 10, specifically, may be the two outermost net pockets 11 The side edge of the net port is arranged along the layout direction of the net pocket 11 . The end of each laying cable 30 can form two branches, and the four branches of the two laying cables 30 can be respectively detachably connected with the four first anchor rings 12 located at the bottom of the net port. In some embodiments, the deployment cable 30 can be connected with the first anchor ring 12 by a looper. Specifically, in some embodiments, the deployment cable 30 can be connected with the first anchor ring by setting a hook 12 snap connections. In some embodiments, the deployment cable 30 may be selected from conventional cables such as wire rope or twine.

Further, in some embodiments, the number of the netting cables 40 may be four, and the four netting cables 40 may be located on the top of the filtering system 10 and arranged at intervals. Specifically, the four netting cables 40 can be arranged side by side at intervals along the arrangement direction of the net pockets 11 . One end of the netting cable 40 can be detachably connected to the fourth anchor ring on the net pocket 30 , and the other end can be connected to the first retracting unit 60 . In some embodiments, the net take-up cable 40 can be connected with the fourth anchor ring by a looper. Specifically, in some embodiments, the net take-up cable 40 can be clamped with the fourth anchor ring by setting a hook catch. In some embodiments, the take-up cable 40 may be selected from conventional cables such as wire rope or hemp rope.

Further, in some embodiments, the tensioning cables 50 may be two, and the tensioning cables 50 may be located on the side edges of the net openings of the two outermost net pockets 11 and corresponding to the two pile foundations 22 . In some embodiments, the tensioning cable 50 may include a main rope 51 and a plurality of sub-strings 52 . One end of the plurality of split ropes 52 can be connected to the main rope 51 , and the other end can be connected to the laying cable 30 on the side of the net opening of the net pocket 11 . In some embodiments, the number of the divided ropes 52 may be two. Of course, it is understood that in other embodiments, the number of the divided ropes 52 may not be limited to two. One end of the main rope 51 is at the side of the net opening of the net pocket 11 , and the other end of the main rope 51 can pass through the second anchor ring 221 on the pile foundation 22 in sequence to be connected to the third retractable unit 80 . In some embodiments, the tensioning cable 50 may be selected from conventional cables such as wire rope or twine.

In some embodiments, the first storage units 60 may be two groups, and the two groups of first storage units 60 may be arranged side by side and at intervals along the direction in which the net pockets 11 are arranged side by side. The two sets of first retractable units 60 can be respectively connected with the net retracting cables 40 at corresponding positions. Each first retractable unit 60 may include a first fixed pulley 61 and a first hoist 62 . The number of the first fixed pulleys 61 in each first retractable unit 60 may be two, and the number of the first hoists 62 may be two. The first fixed pulley 61 is disposed on the receiving table 20 . Specifically, the first fixed pulley 61 is suspended on the upright column of the receiving table 20 and can be used to connect with the net take-up cable 40 to change the net take-up cable 40 directions. Specifically, the netting cable 40 can be wound around the first certain pulley 61 on the first hoisting machine 62 . The first hoisting machine 62 is disposed on the retracting table 20, and can be connected with the net take-up cable 40, and can be rotated to drive the net take-up cable 40 to extend and retract, thereby realizing net take-up. In some embodiments, the first hoist 62 can be a manual hoist. When in use, the operator can manually operate the manual hoist, and drive the manual hoist to rotate, thereby driving the net take-up cable 40 to expand and contract, so as to realize net take-up. Of course, it can be understood that in some other embodiments, the first hoisting machine 62 may not be limited to a manual hoisting machine, and in some other embodiments, the first hoisting machine 62 may be an electric hoisting machine. Both the manual hoist and the electric hoist can be selected from conventional hoists.

In some embodiments, the second storage units 70 may be two groups, the two groups of second storage units 70 may be spaced apart and arranged side by side along the direction in which the net pockets 11 are arranged side by side, and the two groups of second storage units may be arranged side by side. It can be arranged on the front side of the two groups of first retractable units. Each set of second retractable units 70 may include a second fixed pulley 71 and a second hoist 72 . The second fixed pulley 71 can be disposed on the receiving platform 20 and can be connected with the laying cable 30 . Specifically, the second fixed pulley 71 can be disposed on the upright column of the receiving table 20 , and can be used to change the direction of the cable 30 for laying. The laying cable 30 can be wound around the second hoisting machine 72 around the second fixed pulley 71 . The second hoisting machine 72 can be arranged on the receiving table 20 side by side with the first hoisting machine 62, and can be connected with the laying cable 30. The second hoisting machine 72 can drive the laying cable 30 to telescopically move through rotation, and further Realize the closing or distribution of the network. In some embodiments, the second hoist 72 can be a manual hoist, and the operator can manually operate the manual hoist when in use, and drive the manual hoist to rotate and then drive the deployment cable 30 to extend and retract, so that the net can be deployed. Of course, it can be understood that, in other embodiments, the second hoist 72 may not be limited to a manual hoist, but may be an electric hoist. Both the manual hoist and the electric hoist can be selected from conventional hoists.

In some embodiments, the third retractable units 80 may be two groups, and the two groups of third retractable units 80 are disposed side by side between the two groups of second retractable units 70 and are connected with the two groups of second retractable units 70 . The units are arranged side by side, and each group of third retractable units 80 includes a third fixed pulley 81 and a third hoist 82 . The third fixed pulley 81 can be disposed on the receiving table 20 and arranged side by side with the second fixed pulley 71 . Specifically, the third fixed pulley 81 can be suspended on a column set on the receiving table 20 , and can be connected with the tension cable 50 , which can be used to change the direction of the tension cable 50 . In some embodiments, the main rope of the tension cable 50 can be wound around the third fixed pulley 81 on the third hoisting machine 82 . In some embodiments, the third hoisting machine 82 can be disposed on the retracting table 20 and can be connected with the tensioning cable 50 , and can be used to drive the tensioning cable 50 to expand and contract, thereby assisting in the deployment of the net. In some embodiments, the third hoist 82 can be a manual hoist. When in use, the operator can manually operate the manual hoist, and drive the manual hoist to rotate, thereby driving the tensioning cable 50 to expand and contract, so that the net can be deployed. Of course, it can be understood that in some other embodiments, the third hoisting machine 82 may not be limited to a manual hoisting machine, and in some other embodiments, the third hoisting machine 82 may be an electric hoisting machine. Both the manual hoist and the electric hoist can be selected from conventional hoists.

As shown in FIGS. 1 to 4 , when the retractable device for the nuclear power circulating water pre-filtration system is installed for the first time, the first step is to install and deploy cables. Specifically, one end of the two deployment cables 40 is connected to the second retractable unit 60 When installed in place, the four branches at the ends of the two cables 40 are placed on the receiving table 20 for subsequent connection with the bottom of the net port of the net pocket 11 . The second step is to install one end of the main ropes of the two left and right tension cables 50 and the third retractable unit 80 in place, and place the other ends of the main ropes of the two tension cables 50 and the two sub-ropes on the retractable table. 20 for subsequent connection with the third anchor ring 13 on the side of the network port.

When the deployment device of the nuclear power circulating water pre-filtration system deploys the net, the first step is to connect the four branches of the two deployment cables 30 to the four first anchor rings 12 at the bottom of the net ports of the three net pockets 11 respectively; The second step is to connect four netting cables 40, one end of the four netting cables 40 is snap-connected to the fourth anchor ring at the net port, and the other ends are respectively connected to the fourth anchor ring of the first retractable unit 60. A hoist 62 is connected; in the third step, the end of the net pocket 11 is thrown into the water intake open channel, and the remaining net port is on the platform 23 of the retractable platform 20; The other end of the rope 51 is respectively connected to the third anchor ring 13 on the side of the net port of the net pocket 11, and can be connected with a looper; the fifth step, by operating the second hoist 72 and the third hoist 82 to rotate, complete The net pocket is in place and tensioned, and when the first anchor ring 12 and the third anchor ring 13 of the net pocket 11 reach the bottom beam 24, the net opening of the net pocket 11 is opened. In some embodiments, the bottom of the deployment cable 30 can be provided with a bottom bracket, and when the deployment cable 30 is lifted upward, the third hoist 82 can be rotated to drive the tension cable 50 to rise, and the deployment and tension can be achieved at the same time. . When deployed, the E'F'G'H' on the bottom of the net pocket 11 coincides with the bottom beam EFGH.

When the nuclear power circulating water pre-filtering system retracts the net, the first step is to rotate the second hoist 72 and the third hoist 82 to loosen the net wire 30 and tighten the cable 40; the second step is to operate the four first hoists 62. Drive the four pre-arranged net-receiving cables 40 to lift the bottom of the net port upward. During the lifting process, the top side of the net port and the bottom side of the net port are merged to realize the closing. When the net port of the net pocket 11 reaches the platform 23, immediately untie the netting cable from the first anchor ring 12 of the netting port, and reliably hook the unfastened netting cable to the fixed point on the platform 23, so as to facilitate the next laying The net is used; the third step, continue to operate the first hoist 62, when the tension cable 50 is connected to the third anchor ring 13 on the side of the mesh port and rises to the platform, untie the tension cable 50 from the mesh port, and pull the tension cable 50. The tightening cable 50 is reliably hooked to the fixed point on the platform 23, so as to facilitate the next use of the net; the fourth step, continue to operate the first hoist 62, when the net port of the net pocket 11 reaches the limit position, stop operating the first hoist 62 , after using the fixed point on the platform 23 to be reliably connected to the net pocket, untie the netting cable 40 from the net port; the fifth step, loosen the netting cable 40, and hang the netting cable 40 away from the net pocket 11. The net port is set On any one of the fourth anchor rings, the first hoist 62 continues to rotate, so that the entire filter device is put on the platform 23 .

By using the nuclear power circulating water pre-filtering system retracting device, the problem of mechanized deployment of the net pockets 11 in the pre-filtering system can be solved, labor costs can be saved, and the net body deployment and tensioning can be completed simultaneously; and the net pockets 11 can be solved simultaneously. It can effectively protect the pre-filtration system from the bottom and the side, and in addition, the deployment and replacement of the net bag 11 can be carried out on the platform, avoiding diving operations and surface operations, and without the cooperation of the boat, and can be used to improve the net bag 11. The replacement efficiency of 15m wide net can be realized within 1 hour. In some embodiments, the entire deployment and take-up process can be powered by an electric hoist, eliminating the need for manual labor.

It can be understood that the above embodiments only represent the preferred embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the patent of the present invention; In other words, without departing from the concept of the present invention, the above-mentioned technical features can be freely combined, and some deformations and improvements can be made, and these all belong to the protection scope of the present invention; All equivalent transformations and modifications made shall fall within the scope of the claims of the present invention.

Claims

A device for retracting a nuclear power circulating water pre-filtration system, the filtration system (10) includes at least one net pocket (11), characterized in that it includes a deployment cable (30) connected to the net pocket (11), a connection The net collection cable (40) on the net pocket (11), the tension cable (50) connected to the net pocket (11), the retractable platform (20), the A first retractable unit (60), a second retractable unit (70) provided on the retractable table (20), and a third retractable unit (80) provided on the retractable table (20) );

The first retractable unit (60) is connected with the net take-up cable (40) to drive the net take-up cable (40) to telescopically move to realize net take-up;

The second retractable unit (70) is connected with the deployment cable (30) to drive the deployment cable (30) to telescopically move to achieve net distribution;

The third retractable unit (80) is connected with the tensioning cable (50) to drive the tensioning cable (50) to move in and out to assist the deployment cable (30) in arranging the net.
The retracting device for a nuclear power circulating water pre-filtration system according to claim 1, characterized in that, the first retracting unit (60) comprises a retracting and retracting unit (60) that is arranged on the retracting platform (20) and is connected to the retracting cable. (40) A first fixed pulley (61) connected, a first hoist arranged on the retractable table (20) and connected with the net take-up cable (40) to drive the net take-up cable (40) to expand and contract (62).
The retractable device for a nuclear power circulating water pre-filtration system according to claim 2, characterized in that, the second retractable unit (70) comprises a retractable unit (70) disposed on the retractable platform (20) and connected to the deployment cable (30) A second fixed pulley (71) connected, and a second fixed pulley (71) provided on the receiving and unloading platform (20) and connected with the laying cable (30) to drive the laying cable (30) to expand and contract winch(72);

The third retractable unit (80) includes a third fixed pulley (81) provided on the retractable platform (20) and connected with the tension cable (50), and a third fixed pulley (81) provided on the retractable platform (50) A third hoist (82) on (20) and connected to the tensioning cable (50) drives the tensioning cable (50) to extend and retract.
The device for retracting and releasing a nuclear power circulating water pre-filtration system according to claim 1, characterized in that, the deployment cable (30) is detachably arranged at the bottom of the mesh port of the net pocket (11);

The tensioning cable (50) includes a main rope (51) and a plurality of sub-ropes (52); one end of each sub-rope (52) is connected to the main rope (51) and the other end is connected to the mesh port side connection;

The main rope (51) is connected to the third retractable unit.
The retractable device for a nuclear power circulating water pre-filtration system according to claim 1, wherein the retractable platform (20) comprises a base (21) and a pile foundation (22) arranged on the base (21). , and a platform (23) arranged on the pile foundation (22);

The first retractable unit (60) and the second retractable unit (70) are arranged on the platform (23) at intervals.
The retracting device for a nuclear power circulating water pre-filtration system according to claim 5, characterized in that a bottom beam (24) is provided on the base (21);

The net pocket (11) is provided with a first anchor ring (12) that is detachably connected to the deployment cable (30).
The device for retracting and releasing a pre-filtering system of nuclear power circulating water according to claim 5, characterized in that, a plurality of first detachable and pierced tension cables (50) are distributed on the pile foundation (22) at intervals along the longitudinal direction. Two anchor rings (221).
The device for retracting and unloading a nuclear power circulating water pre-filtration system according to claim 1, characterized in that, a third anchor ring (13) connected to the tensioning cable (50) is provided at the mesh opening of the net bag (11). ).
The device for retracting and unfolding a nuclear power circulating water pre-filtration system according to claim 1, characterized in that, the net pocket (11) is provided with a plurality of fourth anchor rings that are detachably connected to the net take-up cable (40).
The storage device for a nuclear power circulating water pre-filtration system according to claim 1, characterized in that there are multiple net pockets (11), and the multiple net pockets (11) are arranged side by side;

The first retractable units (60) are divided into two groups, and the two groups of the first retractable units (60) are arranged at intervals and side by side;

The second retractable units (70) are divided into two groups, and the two groups of the second retractable units (70) are arranged at intervals and side by side;

The third retractable units (80) are divided into two groups, the two groups of the third retractable units (80) are spaced apart and arranged side by side, and the two groups of the third retractable units (80) and the second retractable units (80) are arranged side by side. The placement units (70) are arranged side by side.
The retracting device for a nuclear power circulating water pre-filtration system according to claim 3, wherein the first hoist, the second hoist and/or the third hoist are electric hoists or manual hoists.