CN210459125U - Water intaking open channel trash device of nuclear power plant - Google Patents
Water intaking open channel trash device of nuclear power plant Download PDFInfo
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- CN210459125U CN210459125U CN201920192018.4U CN201920192018U CN210459125U CN 210459125 U CN210459125 U CN 210459125U CN 201920192018 U CN201920192018 U CN 201920192018U CN 210459125 U CN210459125 U CN 210459125U
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Abstract
The utility model discloses a sewage blocking device for a water intake open channel of a nuclear power plant, which comprises a sewage blocking net and a plurality of vertical piles, wherein the plurality of vertical piles are arranged in a line along the width direction of the water intake open channel, the bottom ends of the vertical piles are fixedly connected to the bottom of the water intake open channel, and the vertical piles are fixedly connected with a bearing platform; the sewage blocking net is positioned on one side of the vertical pile close to the upstream of the water taking open channel, the upper end of the sewage blocking net is connected with a main cable, the main cable is connected with the bearing platform, and two ends of the main cable are fixedly connected to the revetments at two sides of the water taking open channel; the lower end of the trash rack is connected with an auxiliary cable rope, and the auxiliary cable rope is connected with an anchorage block body through an anchor chain; the upper end of the bearing platform is fixedly connected with a lifting device, and the lifting device is connected with a main cable. The utility model provides a block dirty device for fixed structure of blocking dirty, the wholeness of structure is strong, and horizontal bending moment ability reinforce is resisted to the structure, can bear the horizontal loading effect of great wind, wave and rivers, and the factor of safety of structure is higher, has improved the utility model discloses an excellent in use effect.
Description
Technical Field
The utility model relates to a civil engineering field especially relates to a water intaking open channel of nuclear power plant blocks dirty device.
Background
In recent years, with the continuous change of marine ecological environment, a phenomenon that marine organisms and marine foreign matters are gathered and block a water intake of a nuclear power plant for many times at home and abroad in a coastal nuclear power plant causes events such as power reduction, shutdown and shutdown of a nuclear power unit, causes huge economic loss and arouses social wide attention, and becomes an important hidden danger for safe operation of the nuclear power unit.
As a water taking source of a nuclear power plant circulating cooling water system and an important service water system, the running state of a water taking port directly influences the safe running and the reliability of a power plant. In order to ensure the water taking safety of nuclear power plants, a plurality of coastal nuclear power plants are provided with a sewage blocking device at a water taking open channel door and the inner side of an open channel, and the domestic existing sewage blocking devices mainly comprise floating sewage blocking devices and fixed fragment type sewage blocking devices.
The floating type trash blocking device adopts the type of a floating barrel, an anchor block and a trash blocking net, and the working principle is as follows: the sewage blocking net provides buoyancy through the buoy, and the main cable, the anchor chain, anchor block bodies on the open channel revetments (breakwaters) on two sides and underwater anchors are connected into a whole, so that the sewage blocking net forms a closed structure on the section of the water taking open channel, and the sewage blocking function is realized. This trash holding device has the following disadvantages: (1) the floating type trash blocking device is weak in wind and wave resistance, under the combined action of wind, waves and flow at the position of a water taking open channel door with poor shielding conditions, particularly when marine organisms burst in large numbers and the trash blocking net is blocked seriously, the trash blocking net is stressed more, and in terms of stress, the structure safety coefficient is low and the trash blocking net is easy to damage. (2) When the stormy waves are large, floating objects such as marine organisms, marine foreign matters and the like easily cross the trash rack and enter the inner side of the water taking open channel. In addition, a gap leak exists between the trash rack and the slope surfaces of the revetments (breakwaters) at two sides of the water taking open channel, a channel for marine organisms to enter a water taking port of the nuclear power unit is formed, and the full-section intercepting function cannot be realized.
The fixed piece formula trash device that divides adopts the type of piece formula trash rack + pile foundation cushion cap, and its theory of operation is: the left end and the right end of the trash rack are connected to front-row straight piles and bearing platforms of different pile foundation bearing platforms through connecting fasteners respectively, a split type plane net is formed between the pile foundation bearing platforms, and the trash rack function is achieved. This trash holding device has the following disadvantages: (1) trash rack is the piece formula trash rack of branch, connects in vertical pile and cushion cap through connecting the fastener, when changing trash rack, needs the workman to untie the fastener on vertical pile and the cushion cap one by one in advance, and the new trash rack of installation need install piece by piece when installing, and work load is big, troublesome poeration. (2) The trash rack is of a fixed specification and size, cannot be adjusted in a targeted mode according to trash rack objects, and is poor in adaptability. (3) Connecting fasteners on the bearing platform and the vertical piles are easily corroded in seawater and need to be detected and replaced at irregular intervals.
Disclosure of Invention
The utility model aims at the above problem, provide a nuclear power plant's water intaking open channel trash device of simple structure, improvement trash effect.
In order to realize the purpose, the technical scheme of the utility model is that:
the utility model provides a nuclear power plant water intaking open channel trash device, includes trash rack, its characterized in that: the sewage blocking device also comprises a plurality of straight piles, the straight piles are arranged in a straight line shape along the width direction of the water taking open channel, the bottom ends of the straight piles are fixedly connected to the bottom of the water taking open channel, and the straight piles are fixedly connected with the bearing platform; the sewage blocking net is positioned on one side of the vertical pile close to the upstream of the water taking open channel, the upper end of the sewage blocking net is connected with a main cable, the main cable is connected with a bearing platform, and two ends of the main cable are fixedly connected to revetments or breakwaters on two sides of the water taking open channel; the lower end of the trash rack is connected with an auxiliary cable rope, and the auxiliary cable rope is connected with an anchorage block body through an anchor chain; the upper end of the bearing platform is fixedly connected with a lifting device, and the lifting device is connected with a main cable.
Further, the lifting device comprises a steel bracket, a pulley and an electric winch; the steel support is fixedly connected to the upper end of the bearing platform, the pulley is fixedly connected to the steel support, the electric winch is fixedly connected to the upper end of the bearing platform, and the end of a stranded rope on the electric winch penetrates through a wheel groove of the pulley and then is connected with the main cable.
Furthermore, the trash rack comprises a primary trash rack and a secondary trash rack, the mesh aperture of the secondary trash rack is smaller than that of the primary trash rack, and the secondary trash rack is connected in the meshes of the primary trash rack; the upper end and the lower end of the primary trash rack are respectively connected with the main cable and the auxiliary cable.
Furthermore, the meshes of the first-stage trash rack and the second-stage trash rack are square, the side length of the meshes of the first-stage trash rack is 1000-2000 mm, and the side length of the meshes of the first-stage trash rack is 10-50 mm.
Furthermore, the diameter of the mooring rope is 30-50 mm.
Further, the bearing platform is cylindrical and made of reinforced concrete materials.
Further, the distance between the outer edge of the bearing platform and the outer edge of the straight pile is not less than 0.5 time of the outer diameter of the straight pile.
Furthermore, the anchorage block bodies are made of plain concrete materials and are connected to the auxiliary mooring rope through anchor chains, and the arrangement distance between the anchorage block bodies and the auxiliary mooring rope is 10-20 m.
Compared with the prior art, the utility model has the advantages and positive effect be:
the utility model has the advantages of it is following:
1. the trash holding device in the utility model is a fixed trash holding structure, the integrity of the structure is strong, the horizontal bending moment resistance capability of the structure is strong, the horizontal load action of larger wind, waves and water flow can be borne, and the safety coefficient of the structure is higher;
2. the trash blocking net in the utility model is connected with the bearing platform and the revetment at the two sides of the water taking open channel to form a trash blocking plane, so that the function of intercepting marine organisms and marine foreign matters on the full section of the water taking open channel is realized, the marine organisms and the marine foreign matters can be ensured to be intercepted outside the water taking port door, and the water taking safety of the nuclear power unit is guaranteed;
3. the utility model adopts the integral type trash rack, realizes the whole lifting electromotion of the trash rack through the electric winch, the steel bracket and the pulley, has simple and convenient operation, can save the labor cost and is convenient for the operation and maintenance work of the trash rack;
4. the utility model adopts the design that the trash rack is composed of the first-level trash rack and the second-level trash rack, when the second-level mesh is damaged, only the second-level mesh needs to be replaced, the first-level mesh can be continuously used, in addition, the size specification of the second-level mesh can be adjusted according to the sizes of different marine organisms and marine foreign matters, and the cost and the maintenance cost of the trash rack net material can be saved; the operation is simple and convenient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic elevation view of the present invention;
FIG. 2 is a schematic view of the connection of a primary trash rack to a secondary trash rack;
fig. 3 is a schematic plan view of the present invention;
fig. 4 is a schematic sectional view of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, any modifications, equivalent replacements, improvements, etc. made by other embodiments obtained by a person of ordinary skill in the art without creative efforts shall be included in the protection scope of the present invention.
As shown in fig. 1 to 4, the utility model discloses a nuclear power plant water intaking open channel trash device installs in nuclear power plant water intaking open channel door department, contains one-level trash rack 1, second grade trash rack 2, main mooring rope 3, vice mooring rope 4, cushion cap 5, vertical pile 6, anchorage block 7, electric winch 8, steel bracket 9, pulley 10, anchor chain 11. The primary trash rack 1 is connected with anchor structures on the revetments (breakwaters) at two sides of the water taking open channel through a bearing platform 5 to form a trash rack plane for intercepting marine organisms and marine foreign matters.
The first-stage trash rack 1 and the second-stage trash rack 2 are both made of nylon materials, and the second-stage trash rack 2 is fixed on meshes of the first-stage trash rack 1. The meshes of the first-stage trash rack 1 are 1000-2000 mm in side length, the meshes of the second-stage trash rack 2 are 10-50 mm in side length, and the meshes of the second-stage trash rack 2 can be flexibly adjusted according to trash blocking requirements.
The main mooring rope 3 and the auxiliary mooring rope 4 are steel mooring ropes, the main mooring rope 3 is arranged at the top of the first-level trash rack 1, the middle of the main mooring rope is connected with a bearing platform, the two ends of the main mooring rope are respectively connected with the revetments or breakwaters at the two sides of the water taking open channel, the auxiliary mooring rope 4 is arranged at the bottom of the first-level trash rack 1, the diameters of the main mooring rope and the auxiliary mooring rope are 30-50 mm, and the specific size is determined by calculation according to the stress.
The vertical piles 6 are arranged in the width direction of the water intake open channel in a straight shape. The vertical piles are cylindrical or rectangular columns, the bottom ends of the vertical piles are fixedly connected to the bottom of the water taking open channel, and the specific arrangement intervals of the vertical piles 6 can be calculated and determined according to factors such as natural conditions (wind, waves, water flow and geology) in the water taking open channel, the estimated blockage rate of the trash rack, ship passing requirements and the like.
The bearing platform 5 is made of reinforced concrete materials and fixedly connected to the top end of the straight pile, in order to prevent the trash rack from being damaged by friction acceleration of the trash rack and the bearing platform 5, the bearing platform is designed to be of a cylindrical structure, the distance between the edge of the bearing platform 5 and the outer edge of the straight pile 6 is not less than 0.5 time of the pile diameter of the straight pile, and the number and the pile diameter of the straight pile 6 are determined according to natural conditions (wind, wave, water flow and geological conditions) in the water taking open channel, the blocking rate of the trash rack and the like.
The anchor blocks 7 are uniformly arranged at the bottom of the water taking open channel along the axis of the sewage blocking net at intervals of 10-20 m, the anchor blocks 7 are made of plain concrete materials, each anchor block 7 is provided with an anchor chain 11, and the anchor chains 11 are connected with the auxiliary mooring ropes 4 at the bottom of the first-stage sewage blocking net 1.
The electric winch 8 and the steel support 9 are installed at the top of the bearing platform 5, the pulley 10 is arranged at the top of the steel support 9, the electric winch 8 is fixedly connected to the upper end of the bearing platform 5, and the end of a stranded rope on the electric winch 8 penetrates through a pulley groove of the pulley 10 and then is connected with a main cable. The integral lifting of the trash rack is realized through the electric winch 8, the steel bracket 9 and the pulley; the lifting efficiency of the trash rack is improved.
Claims (8)
1. The utility model provides a nuclear power plant water intaking open channel trash device, includes trash rack, its characterized in that: the sewage blocking device also comprises a plurality of straight piles, the straight piles are arranged in a straight line shape along the width direction of the water taking open channel, the bottom ends of the straight piles are fixedly connected to the bottom of the water taking open channel, and the straight piles are fixedly connected with the bearing platform; the sewage blocking net is positioned on one side of the vertical pile close to the upstream of the water taking open channel, the upper end of the sewage blocking net is connected with a main cable, the main cable is connected with a bearing platform, and two ends of the main cable are fixedly connected to revetments or breakwaters on two sides of the water taking open channel; the lower end of the trash rack is connected with an auxiliary cable rope, and the auxiliary cable rope is connected with an anchorage block body through an anchor chain; the upper end of the bearing platform is fixedly connected with a lifting device, and the lifting device is connected with a main cable.
2. The nuclear power plant water intake open channel trash device of claim 1, characterized in that: the lifting device comprises a steel bracket, a pulley and an electric winch; the steel support is fixedly connected to the upper end of the bearing platform, the pulley is fixedly connected to the steel support, the electric winch is fixedly connected to the upper end of the bearing platform, and the end of a stranded rope on the electric winch penetrates through a wheel groove of the pulley and then is connected with the main cable.
3. The nuclear power plant water intake open channel trash device of claim 1, characterized in that: the trash rack comprises a primary trash rack and a secondary trash rack, the mesh aperture of the secondary trash rack is smaller than that of the primary trash rack, and the secondary trash rack is connected in the meshes of the primary trash rack; the upper end and the lower end of the primary trash rack are respectively connected with the main cable and the auxiliary cable.
4. The water intake open channel trash device of the nuclear power plant of claim 3, characterized in that: the meshes of the first-stage trash rack and the second-stage trash rack are square, the side length of the meshes of the first-stage trash rack is 1000-2000 mm, and the side length of the meshes of the first-stage trash rack is 10-50 mm.
5. The nuclear power plant water intake open channel trash device of claim 1, characterized in that: the diameter of the mooring rope is 30-50 mm.
6. The nuclear power plant water intake open channel trash device of claim 1, characterized in that: the bearing platform is cylindrical and made of reinforced concrete materials.
7. The nuclear power plant water intake open channel trash device of claim 1, characterized in that: the distance between the outer edge of the bearing platform and the outer edge of the straight pile is not less than 0.5 time of the outer diameter of the straight pile.
8. The nuclear power plant water intake open channel trash device of claim 1, characterized in that: the anchorage block bodies are made of plain concrete materials and are connected to the auxiliary mooring rope through anchor chains, and the arrangement distance of the anchorage block bodies on the auxiliary mooring rope is 10-20 m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920192018.4U CN210459125U (en) | 2019-02-12 | 2019-02-12 | Water intaking open channel trash device of nuclear power plant |
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| CN201920192018.4U CN210459125U (en) | 2019-02-12 | 2019-02-12 | Water intaking open channel trash device of nuclear power plant |
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| CN210459125U true CN210459125U (en) | 2020-05-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667246A (en) * | 2019-02-12 | 2019-04-23 | 中交第四航务工程勘察设计院有限公司 | A kind of nuclear power plant's water intaking open channel sewage blocking device |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667246A (en) * | 2019-02-12 | 2019-04-23 | 中交第四航务工程勘察设计院有限公司 | A kind of nuclear power plant's water intaking open channel sewage blocking device |
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