CN218151389U - Nuclear power plant drum-shaped filter screen coupling suction device and nuclear power plant drum-shaped filter screen sewage discharge system - Google Patents
Nuclear power plant drum-shaped filter screen coupling suction device and nuclear power plant drum-shaped filter screen sewage discharge system Download PDFInfo
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- CN218151389U CN218151389U CN202221835448.1U CN202221835448U CN218151389U CN 218151389 U CN218151389 U CN 218151389U CN 202221835448 U CN202221835448 U CN 202221835448U CN 218151389 U CN218151389 U CN 218151389U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
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Abstract
The utility model discloses a nuclear power plant drum-shaped filter screen coupling suction device and a nuclear power plant drum-shaped filter screen sewage discharge system, wherein the nuclear power plant drum-shaped filter screen coupling suction device comprises a suction pipeline, a suction pump, a sewage discharge pipeline and a garbage filtering and collecting unit; the suction pipeline is arranged on the platform at the bottom of the drum-shaped filter screen, and one end of the suction pipeline extends into the bottom of the drum-shaped filter screen; the suction pump is coupled and installed on a platform at the bottom of the drum-shaped filter screen, and the other end of the suction pipeline is connected with the inlet end of the suction pump; the garbage filtering and collecting unit is arranged on the ground; one end of the sewage discharge pipeline is connected with the outlet end of the suction pump, and the other end of the sewage discharge pipeline extends upwards to the ground and is connected with the garbage filtering and collecting unit. The utility model discloses a nuclear power plant drum-shaped filter screen coupling suction device, effectively reduce the emergence that drum-shaped filter screen blockked up, ensure the nuclear safe cooling water supply of unit; need not to introduce external water source, it is little to building structure transformation scope, reduce cost, and easy and simple to handle, the routine maintenance is convenient.
Description
Technical Field
The utility model relates to a nuclear power plant's drum type filter screen blowdown technical field especially relates to a nuclear power plant's drum type filter screen coupling suction device and nuclear power plant's drum type filter screen blowdown system.
Background
The water source of the nuclear power station is seawater, the seawater enters from two sides of the drum-shaped filter screen, and flows out of the drum-shaped filter screen after being filtered by the drum-shaped filter screen mesh (the filtering precision is 3 mm). When the drum-shaped filter screen rotates, the fouling scoops and the marine organisms trapped on the inner sides of the meshes are lifted above the operating platform, and washing water sprayed from the outer sides of the meshes is flushed into the fouling discharge groove and discharged. However, in view of the actual operating conditions, a large amount of marine organisms are easily accumulated at the bottom of the drum-shaped filter screen under the action of gravity, so that the machine set can only be shut down through overhaul at present, the ditch is emptied and then manually cleaned, the ditch cannot be cleaned during normal operation, the potential safety hazard is large, and the serious consequence of shutdown and shutdown of the machine set is easily caused.
To above-mentioned problem, CN207064261U discloses a blowdown suction device of rotatory cydariform filter screen, adopts a vertical sealless liquid level sewage self priming pump, and the motor setting is in land work platform plane, and the water pump setting is in rotatory cydariform filter screen main bearing supporting platform plane, and scalable blowdown suction tube setting adopts the flexible tube to connect between water pump and the scalable blowdown suction tube at the minimum work plane of water inlet channel. However, there are the following drawbacks: the pump set is fixedly arranged on the platform, and for a nuclear power plant in operation, a reserved hole is not reserved at the beginning of the building structure design; the water pump is arranged on the plane of the bearing supporting platform of the rotary drum-shaped filter screen, maintenance and overhaul can be carried out only according to the condition of seawater ebb, and daily maintenance and overhaul of equipment are limited; the water pump is connected with the telescopic sewage suction pipe by adopting a flexible pipe, underwater system equipment requires shock resistance, and the flexible pipe is unstable and has insufficient reliability under the impact of water flow; when the sea surface has a low water level after the tide is removed, the distance between the liquid level and the impeller blade of the water pump is within 3 meters, an external water source is needed to inject water into the pump body, the newly added water source enlarges the transformation range, and the cost is increased; when the sea surface has a low water level after the tide is removed, in order to establish the vacuum degree of air in the water pump inlet pipe, the clearance between the impeller blade and the upper cambered surface on the pump suction cover needs to be as small as possible, otherwise, the vacuum is difficult to form, the sucked marine life contains impurities with different sizes of 3-50mm, and the pump body and the impeller are easy to damage; the inner surface of the connecting pipeline does not consider marine organism adhesion, and the pipeline of the system is easy to block.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, a drum type filter screen coupling suction device of modified nuclear power plant and drum type filter screen drainage of nuclear power plant is provided.
The utility model provides a technical scheme that its technical problem adopted is: the nuclear power plant drum-shaped filter screen coupling suction device comprises a suction pipeline, a suction pump, a sewage discharge pipeline and a garbage filtering and collecting unit;
the suction pipeline is arranged on a platform at the bottom of the drum-shaped filter screen, and one end of the suction pipeline extends into the bottom of the drum-shaped filter screen; the suction pump is coupled and installed on a platform at the bottom of the drum-shaped filter screen, and the other end of the suction pipeline is connected with the inlet end of the suction pump;
the garbage filtering and collecting unit is arranged on the ground; one end of the sewage discharge pipeline is connected with the outlet end of the suction pump, and the other end of the sewage discharge pipeline extends upwards to the ground and is connected with the garbage filtering and collecting unit.
Preferably, the nuclear plant drum-type screen-coupled suction device further comprises a check valve;
the check valve is arranged on the sewage discharge pipeline.
Preferably, the nuclear power plant drum-type filter screen coupling suction device further comprises a base arranged on a platform at the bottom of the drum-type filter screen; the suction pump support is positioned on the base.
Preferably, the nuclear plant drum-type filter screen coupling suction device further comprises a coupling bracket assembly;
the suction pump is positioned on the base by the coupling bracket assembly.
Preferably, the coupling bracket assembly comprises a coupling bracket and a guide rod;
the coupling frame is fixed on the base and connected with the sewage pipeline; the guide rod is vertically connected to at least one side of the coupling frame and extends to the ground, and the suction pump moves downwards along the guide rod to the base to be matched with the coupling frame.
Preferably, a reamer is arranged in the inlet end of the suction pump.
Preferably, the nuclear power plant drum-type screen-coupled suction device further comprises a first pipeline bracket;
the suction pipeline penetrates through the first pipeline support.
Preferably, the nuclear power plant drum screen coupled suction device further comprises a second pipe bracket fixed to the wall and extending upward from the drum screen bottom platform to the ground; the sewage discharge pipeline penetrates through the second pipeline bracket.
Preferably, the nuclear power plant drum-type filter screen coupling suction device further comprises a plurality of bracket assemblies which are arranged at intervals along the extension direction of the sewage discharge pipeline; the bracket component is sleeved with the sewage discharge pipeline and fixed on the wall, and the sewage discharge pipeline is fixed on the wall.
Preferably, the nuclear power plant drum-type filter screen coupling suction device further comprises a control cabinet arranged on the ground;
the control cabinet is connected with the suction pump and controls the starting and stopping of the suction pump.
Preferably, the nuclear power plant drum-type screen-coupled suction device further comprises a model pump;
and the model pump replaces the suction pump after the suction pump is detached and is coupled and installed on a platform at the bottom of the drum-shaped filter screen.
The utility model also provides a nuclear power plant drum-shaped filter screen sewage discharge system, which comprises more than two sets of drum-shaped filter screen coupling suction devices of the nuclear power plant;
and the two sets of nuclear power plant drum-shaped filter screen coupling suction devices are symmetrically arranged on two opposite sides of the drum-shaped filter screen.
The utility model has the advantages that: a suction pump is arranged on a platform at the bottom of the drum-shaped filter screen, and is matched with a suction pipeline and a sewage discharge pipeline, so that deposits in the drum-shaped filter screen are pumped out and discharged to a garbage filtering and collecting unit on the ground, the occurrence of blockage of the drum-shaped filter screen is effectively reduced, and the nuclear safe cooling water supply of the unit is ensured; the method has the advantages of no need of introducing external water sources, small range of building structure modification, cost reduction, simple and convenient operation and convenient daily maintenance.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a schematic structural diagram of a nuclear power plant drum-type filter screen coupling suction device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a suction pump in a nuclear power plant drum-type filter screen coupling suction device according to an embodiment of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The utility model discloses a nuclear power plant's drum type filter screen coupling suction device corresponds drum type filter screen and installs for take out the marine creature and rubbish etc. that the bottom was gathered in the drum type filter screen, to ground side by side, guarantee the normal operating and the filter effect of drum type filter screen.
Generally, two or more sets of nuclear power plant drum type filter screen coupling suction devices are correspondingly arranged on one drum type filter screen, the two or more sets of nuclear power plant drum type filter screen coupling suction devices form a nuclear power plant drum type filter screen pollution discharge system, and the two sets of nuclear power plant drum type filter screen coupling suction devices are symmetrically arranged on two opposite sides of the drum type filter screen.
As shown in fig. 1 and 2, an example structure of a set of nuclear plant drum-type screen-coupled suction devices is shown, and the nuclear plant drum-type screen-coupled suction devices may include a control cabinet 10, a suction pipe 20, a suction pump 30, a sewage pipe 40, and a garbage filtering and collecting unit 50.
Wherein, the control cabinet 10 and the garbage filtering and collecting unit 50 are both arranged on the ground. The suction duct 20 and the suction pump 30 are provided on a drum screen bottom platform.
The suction pipeline 20 is arranged on a platform at the bottom of the drum-shaped filter screen; one end of the suction duct 20 extends into the bottom of the drum screen and the opposite end of the suction duct 20 is positioned on the drum screen bottom platform for connection to a suction pump 30. The suction pump 30 is coupled to the drum-type screen bottom platform, and the other end of the suction pipe 20 is connected to the inlet end of the suction pump 30. The drain line 40 has one end connected to the outlet end of the suction pump 30 and the opposite end extending upwardly to the ground and connected to a waste filtration and collection unit 50.
The control cabinet is connected with the suction pump 30 and controls the starting and stopping of the suction pump 30. After the suction pump 30 is started, the deposits (including marine life, garbage, etc.) at the bottom of the drum-type filter net are sucked into the suction pipe 20, and the sucked deposits are discharged to the garbage filtering and collecting unit 50 on the ground through the outlet end and the sewage discharging pipe 40.
In the nuclear power plant drum-type filter screen sewage system, two or more sets of nuclear power plant drum-type filter screen coupling suction devices can share one control cabinet 10 without a plurality of arrangements.
The garbage filtering and collecting unit 50 can be a garbage basket, a net-shaped box or a collecting tank, etc., and has a filtering function, and the filtering precision can be
Since the deposit discharged into the garbage filtering and collecting unit 50 also contains seawater, after the garbage filtering and collecting unit 50 filters the seawater, the deposit stays in the seawater, and the seawater is discharged through an outlet of the seawater, such as discharged into an upstream flow channel (a chlorination basket) of the drum-type filter screen and flows back to the drum-type filter screen, so that the seawater can be recycled.
In addition, a reamer is provided in the inlet end of the suction pump 30. The deposit is cut up by the reamer of the suction pump 30, then enters the sewage pipe 40 by pressurization and is conveyed to the garbage filtering and collecting unit 50 on the ground.
In order to prevent the reverse flow of the deposits transported in the sewerage pipeline 40, the sewerage pipeline 40 is provided with a check valve 60.
Further, the nuclear power plant drum-type filter screen coupling suction device can further comprise a base 70 and a coupling bracket assembly which are arranged on a platform at the bottom of the drum-type filter screen; the suction pump 30 is positioned on the base 70 by a coupling bracket assembly.
The base 70 may be formed by welding steel pipes, and may be a frame as a whole.
In this embodiment, as shown in fig. 2, the coupling bracket assembly includes a coupling bracket 81 and a guide rod 82.
The coupling bracket 81 is fixed to the base 70 and is connected to one end of the drain pipe 40. The guide rod 82 is vertically connected to at least one side of the coupling frame 81 and extends to the ground, and the suction pump 30 is installed to be moved down onto the base 70 along the guide rod 82 to be engaged with the coupling frame 81. The end of the suction duct 20 remote from the drum screen extends into the base 70 and is connected to the inlet end of the suction pump 30.
In order to fix the suction duct 20, the nuclear plant drum-type screen-coupled suction device further includes a first pipe bracket 21. Suction duct 20 wears to establish in first pipeline support 21 for first pipeline support 21 is as suction duct 20's outside skeleton texture, plays the guard action of anticollision to it. The first pipe support 21 may be a frame structure formed by welding steel pipes or the like.
The suction duct 20 is provided according to its path from the suction pump 30 to the inner bottom of the drum type screen, and may be extended straight, or bent according to a position such as a height difference during the extension, or the like. The first pipe bracket 21 may be provided according to the extending direction and the extending shape of the suction pipe 20; alternatively, it may be provided mainly on the periphery of the straight portion of the suction duct 20.
Similarly, to secure the sewerage conduit 40, in an alternative embodiment, the nuclear plant drum screen coupled suction device further comprises a second pipe bracket (not shown) fixed to the wall and extending from the drum screen bottom platform up to the ground; the sewage pipeline 40 is arranged in the second pipeline bracket in a penetrating way. The second pipeline bracket may be a frame structure formed by welding steel pipes or the like.
In another alternative embodiment, the drum-type filtering net coupling suction device for nuclear power plant further comprises a plurality of bracket assemblies (not shown), wherein the plurality of bracket assemblies are arranged at intervals along the extension direction of the sewage conduit 40, and the bracket assemblies are sleeved on the sewage conduit 40 and fixed on the wall to fix the sewage conduit 40 on the wall.
The suction pipe 20 and the sewage pipe 40 can be made of HDPE (high density polyethylene) to prevent the marine organisms in the pipe from being attached, grown and blocked. A base 70 and a first pipeline bracket 21. The metal components such as the second pipeline bracket (or bracket component) and the like are preferably corrosion-resistant by adopting duplex stainless steel and protected by adopting a sacrificial anode. The outer surfaces of the pipelines, the outer surface of the suction pump 30, the outer surface of the check valve 60 and other equipment and interface parts are coated with antifouling paint to prevent marine organisms from attaching.
The utility model discloses an among the nuclear power plant drum type filter screen coupling suction device, suction pump 30 can be dismantled on base 70, can hoist and mount according to the operating mode and put into operation. For this, a mold pump may be further included, and may be coupled to the drum type screen bottom platform instead of the suction pump 30. Specifically, during the shutdown period, the suction pump 30 is lifted to the ground, and is sent to the base 70 through the guide chain 90 and along the guide rod 82 by using a model pump, and the coupling frame 81 is used for completing the coupling installation, so as to replace the suction pump 30, and meanwhile, the interface end face of the suction pipeline 20 is closed, so that the suction pipeline 20 is blocked by preventing the foreign matters from being attached, the corrosion rate of the suction pump 30 can be reduced, and the usability of the suction pump 30 is ensured.
Before operation, the suction pump 30 is fed to the base 70 through the guide chain 90 along the guide rod 82, and is coupled to the coupling frame 81.
The pump model and the suction pump 30 are assembled and disassembled without water drainage, potential safety hazards are reduced, coupling installation is completed through hoisting operation and matching with the coupling frame 81, hoisting is simple and easy to operate, daily maintenance equipment is convenient, equipment reliability is improved, and pump operation is not influenced by sea surface low water level.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (11)
1. A nuclear power plant drum-type filter screen coupling suction device is characterized by comprising a suction pipeline, a suction pump, a sewage pipeline and a garbage filtering and collecting unit;
the suction pipeline is arranged on a platform at the bottom of the drum-shaped filter screen, and one end of the suction pipeline extends into the bottom of the drum-shaped filter screen; the suction pump is coupled and installed on a platform at the bottom of the drum-shaped filter screen, and the other end of the suction pipeline is connected with the inlet end of the suction pump;
the garbage filtering and collecting unit is arranged on the ground; one end of the sewage discharge pipeline is connected with the outlet end of the suction pump, and the other end of the sewage discharge pipeline extends upwards to the ground and is connected with the garbage filtering and collecting unit.
2. The nuclear plant drum screen coupled suction device according to claim 1, further comprising a check valve;
the check valve is arranged on the sewage pipeline.
3. The nuclear plant drum screen coupled suction device according to claim 1, further comprising a base disposed on a platform at a bottom of the drum screen; the suction pump support is positioned on the base.
4. The nuclear plant drum screen coupled suction device according to claim 3, further comprising a coupling bracket assembly;
the suction pump is positioned on the base by the coupling bracket assembly.
5. The nuclear plant drum screen coupled suction device of claim 4, wherein the coupling bracket assembly includes a coupling bracket and a guide rod;
the coupling frame is fixed on the base and is connected with the sewage discharge pipeline; the guide rod is vertically connected to at least one side of the coupling frame and extends to the ground, and the suction pump moves downwards along the guide rod to the base to be matched with the coupling frame.
6. The nuclear power plant drum screen coupled suction device according to claim 1, wherein a reamer is provided in the inlet end of the suction pump.
7. The nuclear plant drum screen coupled suction device according to claim 1, further comprising a first pipe rack;
the suction pipeline penetrates through the first pipeline support.
8. The nuclear plant drum screen coupled suction device according to claim 1, further comprising a second pipe bracket fixed to a wall and extending upwardly from the drum screen bottom platform to the ground; the sewage discharge pipeline penetrates through the second pipeline bracket;
or the nuclear power plant drum-shaped filter screen coupling suction device further comprises a plurality of support assemblies which are arranged at intervals along the extension direction of the sewage discharge pipeline; the bracket component is sleeved with the sewage discharge pipeline and fixed on the wall, and the sewage discharge pipeline is fixed on the wall.
9. The nuclear plant drum screen coupled suction device according to any one of claims 1 to 8, further comprising a control cabinet disposed on the ground;
the control cabinet is connected with the suction pump and controls the starting and stopping of the suction pump.
10. The nuclear plant drum screen coupled suction device according to any one of claims 1 to 8, further comprising a model pump;
and the model pump replaces the suction pump after the suction pump is detached and is coupled and installed on a platform at the bottom of the drum-shaped filter screen.
11. A nuclear power plant drum screen blowdown system comprising two sets of nuclear power plant drum screen coupled suction devices as claimed in any one of claims 1 to 8;
and the two sets of nuclear power plant drum-shaped filter screen coupling suction devices are symmetrically arranged on two opposite sides of the drum-shaped filter screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221835448.1U CN218151389U (en) | 2022-07-15 | 2022-07-15 | Nuclear power plant drum-shaped filter screen coupling suction device and nuclear power plant drum-shaped filter screen sewage discharge system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221835448.1U CN218151389U (en) | 2022-07-15 | 2022-07-15 | Nuclear power plant drum-shaped filter screen coupling suction device and nuclear power plant drum-shaped filter screen sewage discharge system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218151389U true CN218151389U (en) | 2022-12-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221835448.1U Active CN218151389U (en) | 2022-07-15 | 2022-07-15 | Nuclear power plant drum-shaped filter screen coupling suction device and nuclear power plant drum-shaped filter screen sewage discharge system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218151389U (en) |
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2022
- 2022-07-15 CN CN202221835448.1U patent/CN218151389U/en active Active
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