CN113005996B - Plugging structure of temporary ecological flow tube of hydraulic and hydroelectric engineering - Google Patents
Plugging structure of temporary ecological flow tube of hydraulic and hydroelectric engineering Download PDFInfo
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- CN113005996B CN113005996B CN202110213517.9A CN202110213517A CN113005996B CN 113005996 B CN113005996 B CN 113005996B CN 202110213517 A CN202110213517 A CN 202110213517A CN 113005996 B CN113005996 B CN 113005996B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/16—Sealings or joints
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Abstract
The invention discloses a plugging structure of a temporary ecological flow tube of a hydraulic and hydroelectric engineering, wherein a reducing steel tube with a bell mouth is arranged at the water inlet tube end of the temporary ecological flow tube built in a hydraulic concrete building, a stainless steel knife frame with a knife edge towards the upper part is arranged on the vertical surface of the concrete building, the stainless steel knife frame is positioned above the mouth top of the reducing steel tube and is at a certain distance from the mouth top of the reducing steel tube, the lower part of a soft rope penetrates through the stainless steel knife frame to be fixed on the concrete building, the upper part of the soft rope is fixed at a stable position on the water surface, a plugging ball assembly comprises a weighted rubber ball and a plurality of plugging rubber balls, a lantern ring is arranged outside the weighted rubber ball, the plurality of plugging rubber balls are sequentially fixed on the lantern ring in series through a connecting rope, and the plugging ball assembly is tied and sleeved at the upper end of the soft rope through the lantern ring. The temporary ecological flow pipe plugging device fully utilizes the water pressure difference between the upstream and the downstream of the pipeline to realize temporary ecological flow pipe plugging, does not need to consume extra power, and has the advantages of simple structure, low manufacturing cost, convenient construction and higher safety.
Description
Technical Field
The invention relates to an underwater pipeline plugging technical scheme, in particular to a plugging structure of a temporary ecological flow tube in a hydraulic and hydroelectric engineering.
Background
The water conservancy and hydropower engineering needs to guarantee downstream water supply during the lower gate water storage period, and for a high dam reservoir, when the upstream water level is not stored to the elevation of the permanent ecological flow discharge facility, the ecological flow needs to be discharged through the temporary ecological flow discharge facility so as to guarantee the downstream water supply demand. The temporary ecological flow tube is a common temporary ecological flow facility and has the characteristics of large flow velocity, high water head, short duration, difficult plugging and high investment.
1. The temporary ecological flow pipe has large flow velocity and high water head, so that the price of the electric valve meeting the design requirement is higher, generally more than 10 ten thousand yuan, and the electric ball valve needs to lay an air duct and a cable to the water surface, thereby having complex construction procedure, large engineering quantity and high manufacturing cost.
2. The hydrogeological environment where the electric valve body and the buried cable are located is complex, and the damage is easy to occur, so that the engineering safety is influenced.
3. When the valve is closed, the possibility that the valve equipment is blocked due to the fact that water flow carries sand exists, and temporary plugging of the ecological flow tube is affected.
Disclosure of Invention
The invention aims to solve the technical problem of providing a plugging structure of a temporary ecological flow tube in a water conservancy and hydropower engineering, so as to solve the problems of high cost and poor safety of plugging of the temporary ecological flow tube under high water head and high flow rate and overcome the defects of the prior art.
In order to solve the technical problems, the invention adopts the technical scheme that: a plugging structure of temporary ecological flow tube of hydraulic and hydroelectric engineering is characterized in that a reducing steel tube with a bell mouth is arranged at the water inlet tube end of the temporary ecological flow tube built in a hydraulic concrete building, a stainless steel knife frame with a knife edge towards the upper part is arranged on the vertical surface of the concrete building, the stainless steel knife frame is positioned above the mouth top of the reducing steel tube and is a certain distance away from the mouth top of the reducing steel tube, the lower part of a soft rope penetrates through the stainless steel knife frame to be fixed on the concrete building, the upper part of the soft rope is fixed at a stable position on the water surface, a plugging ball assembly comprises a weighted rubber ball and a plurality of plugging rubber balls, a lantern ring is arranged outside the weighted rubber ball, the plurality of plugging rubber balls are sequentially connected and fixed on the lantern ring in series through a connecting rope, the plugging ball assembly is connected and sleeved at the upper end of the soft rope through the lantern ring, the diameter of the weighted rubber ball is smaller than that of the temporary ecological flow tube, and the diameter of the plugging rubber ball is larger than that of the temporary ecological flow tube, the weight of the plugging ball component is larger than the buoyancy of the plugging ball component in water, so that when the weighted rubber ball of the plugging ball component drives the plugging rubber ball to flow into the temporary ecological flow tube, the temporary ecological flow tube is plugged when the plugging rubber ball is extruded.
The stainless steel knife frame is fixed on a concrete building and consists of a stainless steel blade and three stainless steel bars, the stainless steel blade and the stainless steel bars are welded firmly to form a square frame, and the stainless steel bars are partially embedded into the concrete building.
The plugging rubber ball is a hollow rubber ball body, the center of the plugging rubber ball is penetrated by a connecting rope, the connecting rope penetrates through the ball body to be knotted, and asphalt is sprayed for water prevention, so that an asphalt coating rope knot is formed.
The weighting rubber ball consists of a solid metal ball and outer rubber.
The distance between the stainless steel knife frame and the top of the reducing steel pipe orifice is 1 to 2 times of the outer diameter of the reducing steel pipe.
The plugging ball assembly is provided with a plurality of groups.
The invention has the beneficial effects that:
compared with the prior art, the plugging structure disclosed by the invention has the advantages that the temporary ecological flow tube plugging is realized by fully utilizing the water pressure difference between the upstream and the downstream of the pipeline, no additional power is required to be consumed, and the energy-saving and environment-friendly effects are realized; the plugging structure has simple structure, little engineering quantity and low manufacturing cost; all facilities can be synchronously embedded and installed during construction of the temporary ecological flow pipe, and construction is convenient.
Compared with the prior art, the plugging structure only needs to perform the daily maintenance work of fixing the soft rope on the water surface in the overflowing period of the temporary ecological flow tube, so that the connection reliability is ensured; when the temporary ecological flow tube is plugged, the plugging can be realized only by sleeving the weighted rubber ball and the plugging rubber ball on the soft rope and locally lowering the upper soft rope, and the operation is very simple and convenient.
Compared with the prior art, the temporary ecological flow pipe is smooth before plugging, and the rubber ball is pressed in by using water pressure to realize plugging, so that the possibility that sand stones block plugging equipment is avoided; meanwhile, a plurality of plugging rubber balls and a plurality of plugging structures can be arranged, so that the plugging guarantee rate is increased, and the plugging safety is higher.
Drawings
FIG. 1 is a schematic diagram of the arrangement of a plugging structure of a temporary ecological flow tube of the hydraulic and hydroelectric engineering;
FIG. 2 is a view of the temporary ecological flow tube orifice facing arrangement of the present invention;
FIG. 3 is a detail view of the plugging rubber ball of the present invention;
FIG. 4 is a detail view of the weighted rubber ball of the present invention;
FIG. 5 is a detail view of the stainless steel frame of the present invention;
FIG. 6 is a schematic illustration of the plugging operation of the plugging structure of the present invention;
figure 7 is a schematic post-occlusion view of the occluding structure of the present invention.
In the figure: 1-temporary ecological flow tube; 2-reducing steel pipe; 3-stainless steel knife frame; 4-a soft rope; 5-concrete buildings; 6-weighted rubber ball; 7-plugging the rubber ball; 8-coating asphalt knots; 9-solid metal spheres; 10-a collar; 11-stainless steel blade; 12-stainless steel rebar; 14-connecting rope.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is to be understood that the embodiments described are merely exemplary embodiments, rather than exemplary embodiments, and that all other embodiments may be devised by those skilled in the art without departing from the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
As shown in figures 1-5, the invention relates to a plugging structure of a temporary ecological flow tube of a hydraulic and hydroelectric engineering, a reducing steel tube 2 with a bell mouth is built at the water inlet tube end of the temporary ecological flow tube 1 in a hydraulic concrete building 5, a stainless steel knife frame 3 with a knife edge towards the upper part is arranged on the vertical surface of the concrete building 5, the stainless steel knife frame 3 is positioned above the mouth top of the reducing steel tube 2 and is at a certain distance from the mouth top of the reducing steel tube 2, the lower part of a soft rope 4 passes through the stainless steel knife frame 3 to be fixed on the concrete building 3, the upper part is fixed at a stable position on the water surface, a plugging ball assembly comprises a weighted rubber ball 6 and a plurality of plugging rubber balls 7, a lantern ring 10 is arranged at the outer side of the sphere of the weighted rubber ball 6, the plurality of plugging rubber balls 7 are sequentially and serially connected and fixed on the lantern ring 10 through a connecting rope 14, the plugging ball assembly is tied and sleeved at the upper end of the soft rope 4 through the lantern ring 10, the diameter of the rubber ball 6 is smaller than the diameter of the temporary ecological flow tube 1, the diameter of the plugging rubber ball 7 is larger than that of the temporary ecological flow tube 1, the weight of the plugging ball component is larger than the buoyancy of the plugging ball component in water, so that when the weighted rubber ball 6 of the plugging ball component drives the plugging rubber ball 7 to flow into the temporary ecological flow tube 1, the temporary ecological flow tube 1 is plugged when the plugging rubber ball 7 is extruded.
The stainless steel knife frame 3 is fixed on the concrete building 5 and consists of a stainless steel blade 11 and three stainless steel bars 12, the stainless steel blade 11 and the stainless steel bars 12 are welded firmly to form a square frame, and the stainless steel bars 12 are partially embedded in the concrete building 5.
The plugging rubber ball 7 is a hollow rubber ball body, the center of the plugging rubber ball is provided with a connecting rope 14 which penetrates through the ball body, the connecting rope 14 penetrates through the ball body to be knotted, and asphalt is sprayed for water prevention, so that an asphalt coating rope knot 8 is formed.
The weighted rubber ball 6 consists of a solid metal ball 9 and outer rubber.
The distance between the stainless steel knife frame 3 and the top of the mouth of the reducing steel pipe 2 is 1 to 2 times of the outer diameter of the reducing steel pipe 2.
According to the needs, shutoff ball subassembly can set up the multiunit, increases the shutoff security.
When the temporary ecological flow tube is constructed, the lower part of the soft rope needs to penetrate through the knife frame and then poured into hydraulic concrete, the upper end of the soft rope is fixed at a stable position on the water surface, and the blocking rubber ball and the weighting rubber ball are not sleeved to the soft rope, so that the influence of the rubber ball on the leakage flow of the temporary ecological flow tube is avoided. Before the temporary ecological flow tube is plugged, the tied plugging rubber ball and the weighted rubber ball are sleeved to the top of the soft rope through the lantern ring, and the plugging rubber ball slides to the stainless steel knife rest under the action of gravity of the weighted rubber ball.
Before the temporary ecological flow tube is plugged, the weighted rubber ball is tied and sleeved on the soft rope through the lantern ring and the plugging rubber ball, so that the weighted rubber ball slides to the stainless steel knife rest. Afterwards, the fixed rope in upper portion is transferred to part on the surface of water, aggravate the rubber ball and drive the shutoff rubber ball and sink to the reducing steel pipe mouth of pipe, under the effect of water pressure, aggravate the rubber ball and pass through the reducing steel pipe and be pushed interim ecological flow pipe, simultaneously at the push-in-process, the soft rope is cut off by stainless steel knife frame, the rope breaks loose from the lantern ring, the shutoff rubber ball is also crowded interim ecological flow pipe one by one under the effect of water pressure, when the frictional force of intraductal shutoff rubber ball and pipe wall is greater than water pressure, the rubber ball stops to crowd, interim ecological flow pipe shutoff is accomplished.
As shown in fig. 6 and 7, when the temporary ecological flow tube is plugged, the upper fixed soft rope is locally lowered on the water surface, and the weighted rubber ball drives the plugging rubber ball to sink to the orifice of the reducing steel tube. Under the effect of water pressure, the weighting rubber ball is pushed into the temporary ecological flow tube through the reducing steel tube, and meanwhile, in the pushing process, the soft rope is cut off by the stainless steel knife frame, the soft rope breaks away from the lantern ring, the plugging rubber ball is also squeezed into the temporary ecological flow tube one by one under the effect of water pressure, until the friction force between the plugging rubber ball in the tube and the tube wall is greater than the water pressure, the rubber ball stops being squeezed, and plugging of the temporary ecological flow tube is completed.
As shown in figures 1 and 6, the flexible rope passes through the stainless steel knife frame, the moving range of the flexible rope is limited, on one hand, the weighted rubber ball is guaranteed to be inevitably led into the reducing steel pipe after sinking, on the other hand, the flexible rope can be cut off in time in the process that the weighted rubber ball is extruded into the reducing pipe, and the influence of the flexible rope on structure plugging is reduced.
As shown in fig. 1, 6 and 7, the invention can simultaneously arrange a plurality of plugging rubber balls, each plugging rubber ball is connected in series through a soft rope, and when the plugging of the front plugging rubber ball is unexpected, the plugging rubber balls are squeezed one by one to supplement the plugging until the plugging is finished.
As shown in figure 2, the invention can be provided with a plurality of soft ropes at the same time, and the soft ropes are respectively fixed at stable positions on the water surface at different angles, and when one set of structure plugging is unexpected, the plugging can be carried out for a plurality of times through other soft ropes until the plugging is finished.
The above-mentioned embodiments are only for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to carry out the same, and the present invention shall not be limited to the embodiments, i.e. the equivalent changes or modifications made within the spirit of the present invention shall fall within the scope of the present invention.
Claims (6)
1. A blocking structure of a temporary ecological flow tube of a hydraulic and hydroelectric engineering is characterized in that a reducing steel tube (2) with a horn mouth at the water inlet tube end of a temporary ecological flow tube (1) built in a hydraulic concrete building (5) is constructed, a stainless steel knife frame (3) with a knife edge towards the upper part is arranged on the vertical surface of the concrete building (5), the stainless steel knife frame (3) is positioned above the mouth top of the reducing steel tube (2) and is a certain distance away from the mouth top of the reducing steel tube (2), the lower part of a soft rope (4) passes through the stainless steel knife frame (3) and is fixed on the concrete building (5), the upper part is fixed on a stable position on a water surface, a blocking ball assembly comprises a weighted rubber ball (6) and a plurality of blocking rubber balls (7), a lantern ring (10) is arranged on the outer side of the weighted rubber ball (6), the plurality of blocking rubber balls (7) are sequentially connected in series and fixed on the lantern ring (10) through a connecting rope (14), the plugging ball component is tied and sleeved at the upper end of the soft rope (4) through a lantern ring (10), the diameter of the weighted rubber ball (6) is smaller than that of the temporary ecological flow tube (1), the diameter of the plugging rubber ball (7) is larger than that of the temporary ecological flow tube (1), the weight of the plugging ball component is larger than the buoyancy of the plugging ball component in water, so that when the weighted rubber ball (6) of the plugging ball component drives the plugging rubber ball (7) to flow into the temporary ecological flow tube (1), the plugging rubber ball (7) is squeezed to plug the temporary ecological flow tube (1).
2. The plugging structure of the temporary ecological flow tube in the hydraulic and hydroelectric engineering according to claim 1, wherein the stainless steel knife frame (3) is fixed on the concrete building (5) and comprises a stainless steel blade (11) and three stainless steel bars (12), the stainless steel blade (11) and the stainless steel bars (12) are welded together to form a square frame, and the stainless steel bars (12) are partially embedded in the concrete building (5).
3. The blocking structure of the temporary ecological flow tube in the hydraulic and hydroelectric engineering according to claim 1, wherein the blocking rubber ball (7) is a hollow rubber ball, the center of the blocking rubber ball is penetrated by a connecting rope (14), the connecting rope (14) penetrates through the ball to be knotted, and asphalt is sprayed on the ball to prevent water, so that an asphalt-coated rope knot (8) is formed.
4. The plugging structure of temporary ecological flow tube in hydraulic and hydro-power engineering according to claim 1, wherein the weighted rubber ball (6) is composed of a solid metal ball (9) and outside rubber.
5. The plugging structure of the temporary ecological flow tube in the hydraulic and hydroelectric engineering according to claim 1, wherein the distance between the stainless steel knife frame (3) and the mouth top of the reducing steel tube (2) is 1 to 2 times of the outer diameter of the reducing steel tube (2).
6. The plugging structure for the temporary ecological flow tube of the hydraulic and hydroelectric engineering according to any one of claims 1 to 5, wherein the plugging ball assemblies are arranged in a plurality of groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110213517.9A CN113005996B (en) | 2021-02-25 | 2021-02-25 | Plugging structure of temporary ecological flow tube of hydraulic and hydroelectric engineering |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110213517.9A CN113005996B (en) | 2021-02-25 | 2021-02-25 | Plugging structure of temporary ecological flow tube of hydraulic and hydroelectric engineering |
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| CN113005996A CN113005996A (en) | 2021-06-22 |
| CN113005996B true CN113005996B (en) | 2022-09-27 |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2064429C (en) * | 1992-03-30 | 1999-06-22 | Peter Szita | Sealing device for expansion joints cut in dams |
| CN102808397B (en) * | 2012-08-22 | 2015-02-11 | 新疆额尔齐斯河流域开发工程建设管理局 | Ball sealer for water inlet of dam bottom hole bypass pipe and method for replacing dam bottom hole bypass valve |
| CN204435330U (en) * | 2014-12-31 | 2015-07-01 | 中国电建集团北京勘测设计研究院有限公司 | The interim ecological bleeder pipe plugging system of a kind of water power hydraulic engineering |
| CN107059793B (en) * | 2017-01-09 | 2018-09-11 | 黄河水利委员会黄河水利科学研究院 | A kind of float type dykes and dams loophole method for blocking |
| CN106592534A (en) * | 2017-01-17 | 2017-04-26 | 叶莉莉 | Small piping cramming device |
| CN209836952U (en) * | 2019-03-15 | 2019-12-24 | 中国电建集团贵阳勘测设计研究院有限公司 | Device for temporarily lowering ecological flow in water storage period of concrete dam |
| CN110004879A (en) * | 2019-04-02 | 2019-07-12 | 武大巨成结构股份有限公司 | A kind of dam water flowing tunnel fast plugging device |
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