CN217870347U - Detachable and anti-clogging technical water supply intake structure - Google Patents

Detachable and anti-clogging technical water supply intake structure Download PDF

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Publication number
CN217870347U
CN217870347U CN202120695515.3U CN202120695515U CN217870347U CN 217870347 U CN217870347 U CN 217870347U CN 202120695515 U CN202120695515 U CN 202120695515U CN 217870347 U CN217870347 U CN 217870347U
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base
pressing plate
water supply
water
section
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汪德楼
郭建强
杨聚伟
陈丽芬
周杰
罗国虎
过美超
郑应霞
吴森华
李成军
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PowerChina Huadong Engineering Corp Ltd
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PowerChina Huadong Engineering Corp Ltd
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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
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

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Abstract

The utility model provides a detachable and anti-clogging technical water supply intake structure, which comprises a technical water supply intake pipe, wherein a cylindrical diffusion section is sleeved on the outer side wall of the technical water supply intake pipe, the outer wall of the cylindrical diffusion section is fixedly connected with a base, the outer end plane of the base is flush with the flow passage steel lining flow passage surface of a water delivery and power generation system, the inner side wall of the base is connected with a pressing plate, and a dirt blocking grid bar is arranged on the opening at the inner side of the pressing plate; the utility model discloses simple reliable, simple to operate, difficult by rivers floater jam, trash rack bars are difficult to drop or fracture.

Description

Detachable and clogging-resistant technical water supply and intake structure
Technical Field
The utility model relates to a water conservancy and hydropower technical field, concretely relates to can dismantle, anti stifled technique water supply intake structure of silting up.
Background
According to the standard requirements, when the working water head of a hydropower station (pumped storage power station) is less than 15m or more than 140m, a unit water supply mode of tail water taking and water pump pressurization is mostly adopted, and other water head sections generally adopt a self-flowing water supply mode or a self-flowing pressure reduction water supply mode. No matter which way is adopted, the water source is taken from a flow channel of the water delivery power generation system, a water intake is required to be arranged in the flow channel, and cooling water is provided for a user for a generator air cooler, a thrust bearing cooler, a water guide bearing cooler, a leakage stop ring, a water turbine main shaft seal and the like after self-flowing, self-flowing pressure reduction or water pump pressurization.
During the flood season of the conventional hydropower station, the water quality of a river channel is turbid and is mixed with leaves, weeds, other floating objects and the like, so that a technical water supply water intake is easily blocked, the technical water supply pressure and flow cannot meet the use requirements, and the safe and stable operation of the water-turbine generator set is seriously threatened; for a pumped storage power station, because the unit has two working conditions of power generation and water pumping, the water flow in the flow channel of the water delivery and power generation system has the characteristic of bidirectional flow, a technical water supply and water taking port is positioned in the flow channel, the stress condition is complex, grid breakage is easy to occur at the conventional water taking port, the broken grid is easy to enter a runner blade of a water pump turbine along with the water flow to damage a runner, the runner is a core component of the water pump turbine unit, if the runner is damaged, huge hidden danger is brought to the safe and stable operation of the power station, and the domestic and foreign hydropower stations (pumped storage power stations) have the accident of multiple water taking port grid breakage and need to be paid attention.
Based on the circumstances, the utility model provides a can dismantle, anti stifled technique water supply intake structure that becomes silted up can effectively solve above problem.
SUMMERY OF THE UTILITY MODEL
To the deficiency that exists among the prior art, the utility model aims to provide a can dismantle, anti stifled technique water supply intake structure silts up. The utility model discloses simple reliable, simple to operate, difficult by rivers floater jam, trash rack bars are difficult to drop or fracture.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
the utility model provides a can dismantle, anti stifled technique water supply intake structure that silts up which characterized in that: the technical water supply and water taking pipe is characterized in that a cylindrical diffusion section is sleeved on the outer wall of the technical water supply and water taking pipe, the end part of the cylindrical diffusion section is fixedly connected with a base, the outer end plane of the base is flush with the surface of a water delivery and power generation system flow channel steel lining flow channel, the inner wall of the base is connected with a pressing plate, and a dirt blocking grid bar is arranged on an opening on the inner side of the pressing plate.
Further: annular ribbed slab is established to the cover on the outer wall of technique water supply intake pipe, annular ribbed slab sets up the downstream side at the barrel-type diffuser segment.
Further: the cylindrical diffusion section comprises a first hollow steel plate section and a second orifice steel plate section, the middle of the first hollow steel plate section is sleeved on the outer side of the technical water supply and taking pipe, the outer side edge of the first hollow steel plate section is vertically connected with the second orifice steel plate section, and the other side edge of the second orifice steel plate section is fixedly connected with the base.
Further: the outer contours of the cylindrical diffusion section, the base and the pressing plate are square, rectangular or circular.
Further: the base is provided with a plurality of anchor bars, the base is fixed with the steel bars in the concrete of the side wall of the tailrace tunnel through the anchor bars, and the end parts of the anchor bars are provided with hooks.
And further: the trash rack on the pressing plate is provided with a plurality of trash rack bars, the trash rack bars are connected through round steel, and two ends of the trash rack bars are fixed on the pressing plate.
Further: the trash rack adopts raised diversion type racks.
Further: the base is provided with a pressing plate connecting groove, the pressing plate connecting groove is connected with a pressing plate, and the base is fixedly connected with the pressing plate through a plurality of countersunk head screws.
Further: the bulges of the trash rack bars are arranged in the direction facing the water flow inlet.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
the utility model discloses simple reliable, simple to operate, difficult by rivers floater jam, trash rack bars are difficult to drop or the fracture, except effectively avoiding the intake jam problem, still convenient the dismantlement, also change easily after single grid damages, have fine application sight.
Drawings
FIG. 1 is a schematic structural view of the trash rack and the ring-shaped pressing plate before installation;
fig. 2 is a front view of the present invention;
FIG. 3 is a cross-sectional view of FIG. 2C-C;
FIG. 4 is a schematic view of the structure of a trash rack;
fig. 5 is an exploded view of the present invention.
Reference numerals are as follows: 1-technical water supply and taking pipe; 2-an annular rib plate; 3-a first hollow steel sheet section; 4-a second orifice steel plate segment; 5-anchor bars; 6-a base; 7-a runner steel lining of the water delivery power generation system; 8-pressing a plate; 9-countersunk head screw; 10-trash rack bar; 11-platen connecting slots; 12-round steel; 13-round plugging steel plates; 14-pressurization test flushing pipe.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the following description of the preferred embodiments of the present invention is given with reference to the accompanying examples, but it should be understood that the drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the present embodiments, certain elements of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.
As shown in fig. 1 to 5, a detachable and clogging-resistant technical water supply and intake structure comprises a technical water supply and intake pipe 1, wherein a cylindrical diffusion section is sleeved on the outer wall of the technical water supply and intake pipe 1, the end part of the cylindrical diffusion section is fixedly connected with a base 6, the cylindrical diffusion section is welded and fixed with the base 6, the outer end plane of the base 6 is flush with the flow channel surface of a flow channel steel lining 7 of a water delivery and power generation system, the inner wall of the base 6 is connected with a pressing plate 8, and the inner side of the pressing plate 8 is provided with a dirt blocking grid strip 10. The technical water supply and taking pipe 1 extends into a flow channel of a water transmission and power generation system during the installation of the pipeline.
Annular floor 2 is established to the cover on the outer wall of technique water supply intake pipe 1, and annular floor 2 and the lateral wall welded fastening of technique water supply intake pipe 1, annular floor 2 sets up the downstream side at the barrel-type diffuser section. The annular rib plate 2 is beneficial to fixedly connecting the technical water supply and water taking pipe 1 and concrete together, and axial displacement of the technical water supply and water taking pipe 1 during system operation is prevented.
The cylindrical diffusion section comprises a first hollow steel plate section 3 and a second orifice steel plate section 4, the middle of the first hollow steel plate section 3 is sleeved on the outer side of the technical water supply and taking pipe 1, the outer side edge of the first hollow steel plate section 3 is perpendicularly connected with the second orifice steel plate section 4, and the other side edge of the second orifice steel plate section 4 is fixedly connected with the base 6. The section area that overflows of water can be increased to the barrel-type diffuser, is favorable to reducing the entry velocity of flow at the intake, reduces the velocity of flow of intake rivers through trash rack 10 for trash rack 10 is not fragile, and the reduction of velocity of flow is favorable to reducing the hydraulic loss at the intake simultaneously, reduces the operation energy consumption of water supply pump, and barrel-type diffuser simple structure, usable steel pipe processing, easily on-the-spot preparation.
The outer contours of the cylindrical diffusion section, the base 6 and the pressing plate 8 adopt a square, rectangular or circular shape.
The bottom of base 6 sets up many anchor bars 5, and base 6 and anchor bar 5 welded fastening, base 6 pass through anchor bar 5 and the reinforcing bar in the tail-water tunnel lateral wall concrete fixed mutually, the tip of anchor bar 5 has the crotch.
Trash rack 10 on clamp plate 8 sets up many, corresponds on many trash rack 10 and offers the round hole, and many trash rack 10 are connected through round steel 12, round steel 12 pass the round hole with many trash rack 10 link to each other, the both ends of trash rack 10 are fixed on the clamp plate. Each trash rack 10 is connected by inserting round steel 12, the structure is helpful for enhancing the strength of the trash rack 10, if part of the trash racks 10 are too large in stress, the round steel 12 can transmit the stress to the adjacent trash racks 10, and the risk of breakage of the single trash rack 10 can be reduced.
The trash rack bars 10 are raised flow guide type grid bars. The bulge of the trash rack bar 10 faces the upstream direction of water flow, and the installation direction of the trash rack bar 10 is parallel to the water flow direction in the flow channel of the water delivery power generation system. The width of the trash rack bars 10 is 80mm, the grid distance is 50mm, the thickness of the trash rack bars is 10mm, and the radius of the chamfer is 10mm. The trash rack 10 is not only beneficial to preventing various floaters in water flow from entering a water intake, but also beneficial to washing away the floaters attached to the outside of the trash rack 10 by the water flow, and further effectively preventing the floaters from blocking the water intake.
The base 6 is provided with a pressing plate connecting groove 11, the pressing plate connecting groove 11 is connected with the pressing plate 8, the base 6 is fixedly connected with the pressing plate 8 through a plurality of countersunk head screws 9, the base 6 is provided with threaded holes, and the countersunk head screws 9 are fixed in the threaded holes. By adopting the countersunk head screw 9, the impact of water flow in the water delivery power generation system on the countersunk head screw 9 can be avoided, and the risk of damage or falling off of the countersunk head screw 9 is reduced. Meanwhile, the flow state of water flow in the flow channel of the water delivery power generation system also influences the operation efficiency of the whole power station unit, and the countersunk head screw 9 is favorable for the flow state distribution of water in the flow channel compared with the conventional screw structure protruding out of the flow channel.
The specific installation and use method of the detachable anti-clogging technical water supply intake structure comprises the following steps:
s1, in order to facilitate the annular rib plate 2 to be sleeved on the outer wall of the technical water supply and taking pipe 1, the diameter of an inner circle opening of the annular rib plate 2 is determined according to the outer diameter of the technical water supply and taking pipe 1, and a certain fit clearance needs to be reserved. The annular rib plate 2 is firmly welded with the technical water supply and taking pipe 1 after being adjusted in place;
s2, assembling and welding the first hollow steel plate section 3 and the second orifice steel plate section 4 into a cylindrical diffusion section in a factory, sleeving the diffusion section on the outer wall of the technical water supply and water taking pipe 1 along an opening in the middle of the first hollow steel plate section 3, and firmly welding the cylindrical diffusion section and the technical water supply and water taking pipe 1 after the cylindrical diffusion section and the technical water supply and water taking pipe are adjusted in place;
s3, welding the base 6 and the anchor bars 5 at the bottom into a whole in a factory, adjusting the position of the base 6, ensuring that the outer end plane of the base 6 is flush with the flow channel surface of a flow channel steel lining 7 of the flow channel water delivery power generation system, and after the position is adjusted in place, firmly welding the inner wall of the base 6 and the second orifice steel plate section 4 of the cylindrical diffusion section, and firmly welding the outer wall and the flow channel steel lining;
and S4, preparing to carry out a pipeline pressure test after the steps are completed, welding and sealing the tail end of the pipeline by using a circular sealing steel plate 13 before the pressure test to form a sealing structure, arranging a pressure test flushing pipeline 14 on the circular sealing steel plate 13, injecting water into the pipeline and pressurizing the interior of the pipeline, and pouring concrete near a water intake after the pressure test is qualified.
And S5, cutting off the part of the water pipe penetrating into the cylindrical diffusion section after the pressurizing test of the technical water supply and water taking pipe 1 is completed and the part is checked to be qualified, and installing the pressing plate 8 and the trash rack 10.
S6, reserving proper machining allowance on the inner side of the pressing plate 8 to ensure that the trash rack bars 10 can be clamped into the inner side of the pressing plate 8; firstly, a plurality of trash rack bars 10 are connected in series through a circular tube, and then the trash rack bars 10 are clamped into the pressing plate 8.
And S7, mounting the pressing plate 8 and the trash rack 10 on the base 6, and firmly fixing the pressing plate 8 and the base 6 by using countersunk screws 9 after the positions are adjusted to the proper positions.
And after the steps are completed, the installation work of the water intake is completed.
According to the utility model discloses a description and attached drawing, the technical staff in the field makes or uses very easily the utility model discloses a can dismantle, anti technique water supply intake structure that becomes silted up stifled, and can produce the positive effect that the utility model discloses record.
The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.

Claims (7)

1. The utility model provides a can dismantle, anti stifled technique water supply intake structure that silts up which characterized in that: the device comprises a technical water supply and water taking pipe (1), wherein a cylindrical diffusion section is sleeved on the outer wall of the technical water supply and water taking pipe (1), the end part of the cylindrical diffusion section is fixedly connected with a base (6), the outer end plane of the base (6) is flush with the flow passage surface of a flow passage steel lining (7) of a water delivery and power generation system, the inner wall of the base (6) is connected with a pressing plate (8), and a dirt blocking grid bar (10) is arranged on an opening on the inner side of the pressing plate (8);
a plurality of trash rack bars (10) are arranged on the pressing plate (8), the trash rack bars (10) are connected through round steel (12), and two ends of each trash rack bar (10) are fixed on the pressing plate (8);
the trash rack (10) adopts a raised flow guide type grid.
2. A detachable anti-clogging structure for intake of technical water according to claim 1, characterized in that: annular rib plate (2) are established to the cover on the outer wall of technique water supply intake pipe (1), annular rib plate (2) set up the downstream side at the barrel-type diffuser section.
3. A detachable anti-clogging structure for intake of technical water according to claim 1, characterized in that: the cylindrical diffusion section comprises a first hollow steel plate section (3) and a second orifice steel plate section (4), the middle of the first hollow steel plate section (3) is sleeved on the outer side of the technical water supply and taking pipe (1), the outer side edge of the first hollow steel plate section (3) is perpendicularly connected with the second orifice steel plate section (4), and the other side edge of the second orifice steel plate section (4) is fixedly connected with the base (6).
4. A detachable anti-clogging technical water intake structure according to claim 1, characterized in that: the outer contours of the cylindrical diffusion section, the base (6) and the pressing plate (8) are square, rectangular or circular.
5. A detachable anti-clogging technical water intake structure according to claim 1, characterized in that: set up many anchor bars (5) on base (6), base (6) are fixed mutually through anchor bar (5) and the reinforcing bar in the tail-water tunnel lateral wall concrete, the tip of anchor bar (5) has the crotch.
6. A detachable anti-clogging technical water intake structure according to claim 1, characterized in that: the base (6) is provided with a pressing plate connecting groove (11), the pressing plate connecting groove (11) is connected with the pressing plate (8), and the base (6) is fixedly connected with the pressing plate (8) through a plurality of countersunk head screws (9).
7. A detachable anti-clogging technical water intake structure according to claim 1, characterized in that: the bulges of the trash rack bars (10) are arranged facing the inlet direction of water flow.
CN202120695515.3U 2021-04-06 2021-04-06 Detachable and anti-clogging technical water supply intake structure Active CN217870347U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120695515.3U CN217870347U (en) 2021-04-06 2021-04-06 Detachable and anti-clogging technical water supply intake structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120695515.3U CN217870347U (en) 2021-04-06 2021-04-06 Detachable and anti-clogging technical water supply intake structure

Publications (1)

Publication Number Publication Date
CN217870347U true CN217870347U (en) 2022-11-22

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Application Number Title Priority Date Filing Date
CN202120695515.3U Active CN217870347U (en) 2021-04-06 2021-04-06 Detachable and anti-clogging technical water supply intake structure

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CN (1) CN217870347U (en)

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