CN209873729U

CN209873729U - Device for underwater sand flushing and silt prevention of gate

Info

Publication number: CN209873729U
Application number: CN201920303639.5U
Authority: CN
Inventors: 李占彪; 莫军; 梁皓; 方洪; 余玉红; 赵海涛; 吴永强; 马思聪
Original assignee: Sinohydro Bureau 14 Co Ltd
Current assignee: Sinohydro Bureau 14 Co Ltd
Priority date: 2019-03-11
Filing date: 2019-03-11
Publication date: 2019-12-31
Anticipated expiration: 2029-03-11

Abstract

The utility model discloses a gate is sand washed under water and is prevented device that becomes silted up aims at providing a low in use cost gate is sand washed under water and is prevented device that becomes silted up. The gate valve comprises a transverse pipe, a main pipe and a plurality of branch pipes, wherein the transverse pipe is positioned on the water blocking side of the gate and is parallel to the width direction of the gate; the transverse pipe is close to the lower end of the gate; the outlet end of the branch pipe is close to and points to the lower end of the gate. The utility model discloses the installation is simple, and the operation is reliable, and occupation time limit for a project is less, and sand washing is prevented becoming silted up effectually, and the desilting expense of door is greatly practiced thrift to the cocoa.

Description

Device for underwater sand flushing and silt prevention of gate

Technical Field

The utility model belongs to the technical field of water conservancy, water and electricity engineering technique and specifically relates to a device that gate washed sand under water and prevented becoming silted up is related to.

Background

In the field of water conservancy and hydropower engineering, part of hydraulic building gates need to be kept in a closed state in a specific time period, and the gates cannot be actuated for a long time, such as tail water gates of hydropower engineering, pump station maintenance gates and the like, generally undertake a diversion and interception task in the later construction period, need to close the doors and block water for a long time period to ensure that other structures are constructed on dry land, and cannot actuate the gates before the construction of other related projects is completed.

Often because the gate longer time be fixed in under water, and can't regularly move the floodgate and dash husky, silt in river constantly deposits before the floodgate, and the effect gate that receives silt side pressure promotes the door power several times when the later stage starts and increases, the phenomenon of starting the difficulty often appears even, adopts a series of engineering measures to handle for this reason usually: and silt treatment measures such as high-pressure water gun flushing, dredging by a dredger, pump suction and the like are adopted before the later-stage gate is started, so that the treatment construction difficulty is high, and the cost is huge.

Combine hydraulic structure gate to arrange, characteristics and engineering practice of silt siltation, the utility model aims at providing a convenient to be under construction, with low costs, simple and reliable gate is sand washed under water and is prevented device that becomes silted up. The device for underwater sand washing and silt prevention of the gate is not reported in relevant documents of construction at home and abroad.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an it is not enough that the purpose aims at overcoming prior art and exists, provides a convenient to be under construction, with low costs, simple and reliable gate is sand washed under water and is prevented device that becomes silted up.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

a gate underwater sand-washing and silt-preventing device is arranged on the water retaining side of a gate; the gate valve comprises a transverse pipe, a main pipe and a plurality of branch pipes, wherein the transverse pipe is positioned on the water blocking side of the gate and is parallel to the width direction of the gate; the transverse pipe is close to the lower end of the gate; the outlet end of the branch pipe is close to and points to the lower end of the gate.

Preferably, the transverse tubes and the main tube form a U-shape.

Preferably, the transverse pipe and the main pipe form an L-shape.

Preferably, the transverse pipe and the main pipe form a T-shape.

Compared with the prior art, the utility model has the advantages of as follows:

the utility model discloses can effectively guarantee opening smoothly of later stage gate, its construction convenience drops into less, does not influence the rivers condition and the gate of operation period and opens and close, and the effect of washing sand is easily guaranteed. Compared with silt treatment measures such as high-pressure water gun flushing, dredging by a dredger, pump suction and the like adopted in the later stage of the engineering, the device is simple to install, directly utilizes conventional air supply equipment or a water supply pipeline with certain pressure as power, is reliable in operation, occupies a shorter construction period, has a good effect of flushing sand and preventing silt, and can greatly save the desilting cost. And simultaneously, the utility model discloses the extendible is to the underwater sand washing of other structures of engineering such as water conservancy water and electricity, prevents the silt project, and application prospect is good, has better economy and social.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 the drawings without creative efforts.

Fig. 1 is the utility model discloses install the structure schematic diagram when the tail water factory building of hydropower station uses.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is a top view of fig. 2, in which only a partial structure of a tailrace water plant of a hydroelectric power station is shown.

In the figure, 1-gate, 2-tail water bottom plate, 3-lowest water retaining level, 4-valve, 5-main pipe, 6-transverse pipe and 7-branch pipe.

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 in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention. In the following description, for the sake of clarity of illustrating the structure and operation of the present invention, reference will be made to the accompanying drawings by means of directional terms, but the terms "front", "rear", "left", "right", "up", "down", etc. should be construed as convenient terms and not as limitative terms.

The device for underwater sand washing and silt prevention of the gate shown in FIGS. 1-3 is installed on the water retaining side (water storage side) of the gate; the gate valve comprises a transverse pipe, a main pipe and a plurality of branch pipes, wherein the transverse pipe is positioned on the water blocking side of the gate and is parallel to the width direction of the gate; the transverse pipe is close to the lower end of the gate; the outlet end of the branch pipe is close to and points to the lower end of the gate.

In this embodiment, the transverse pipe and the main pipe form an L-shape. Obviously, the structure can also be in a U-shaped inverted T-shaped form and the like so as to be convenient for construction arrangement.

The device is installed and used in the following way:

1) before the gate is installed and debugged to stop water, a sand washing and silt preventing device is arranged in front of the gate (or the device and the gate can be installed and debugged simultaneously); when the device is arranged, the main pipe and the transverse pipe are fixed on a front gate pier or a gate bottom plate of the gate through connecting pieces; the inlet end of the main pipe is led to the water level of the water retaining pipe and is connected with pressure equipment (air pressure equipment or a water pump); the transverse pipes are arranged at a certain distance from the bottom of the gate, and the outlet ends of the branch pipes arranged on the transverse pipes are close to and point at the lower end of the gate at intervals;

2) after the gate blocks water, according to the carrying condition of sediment in the water body, the pressure equipment is started regularly and the valve is opened, fluid (air or water) output by the pressure equipment sequentially passes through the main pipe, the transverse pipe and the branch pipe to be washed towards the bottom of the gate regularly, and underwater sand washing and silt prevention of the gate are achieved.

In the specific use process, when fluid sprayed from the branch pipes washes the bottom of the gate, the change of the water surface is observed, when a large amount of water is turned over from the bottom to the water surface or overflows from the bottom and the color becomes turbid in the range of the pipeline arranged in front of the gate, the sand washing effect is better, and the flushing lasts for a certain time, otherwise, the fluid pressure needs to be increased so as to achieve the better sand washing effect.

The main pipe, the transverse pipe and the branch pipes are welded pipes, seamless steel pipes or galvanized steel pipes according to the requirements of water depth and sand flushing pressure, the pressure resistance is 1 ~ MPa, and the requirements of bearing high-pressure air and water transportation are met.

The utility model discloses a device should be before the construction cofferdam is demolishd or before hydraulic structure gate drops into the operation, lay the sand washing before bottom plate concrete isotructure advances before the gate, prevent the silt pipe way, later stage manger plate period carries out regular jet air (water) and washes sand to guarantee opening smoothly of later stage gate, construction convenience drops into less, does not influence the rivers condition and the gate of operation period and opens and close, and the effect of washing sand is easily guaranteed. Compared with silt treatment measures such as high-pressure water rush flushing, dredging by a dredger, pumping and the like adopted in the later stage of the engineering, the device has the advantages of convenient construction, low cost and easy guarantee of a sand flushing effect, and the device is synchronously constructed with gate installation and debugging and basically does not occupy a straight construction period; and simultaneously, the utility model discloses the extendible is to the underwater sand washing of other structures of engineering such as water conservancy water and electricity, prevents the silt project, enlarges application range, and application prospect is good, has better economy and social.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A gate underwater sand-washing and silt-preventing device is arranged on the water retaining side of a gate; the method is characterized in that: the gate valve comprises a transverse pipe, a main pipe and a plurality of branch pipes, wherein the transverse pipe is positioned on the water blocking side of the gate and is parallel to the width direction of the gate; the transverse pipe is close to the lower end of the gate; the outlet end of the branch pipe is close to and points to the lower end of the gate.

2. The gate underwater sand-flushing and silt-preventing device according to claim 1, characterized in that: the transverse pipe and the main pipe form a U shape.

3. The gate underwater sand-flushing and silt-preventing device according to claim 1, characterized in that: the transverse pipe and the main pipe form an L shape.

4. The gate underwater sand-flushing and silt-preventing device according to claim 1, characterized in that: the transverse pipe and the main pipe form a T shape.