Water filling and sand disturbing integrated gate structure

Abstract

The water filling and sand disturbing integrated gate structure comprises a hollow screw rod, the upper end of the hollow screw rod is connected with a high-pressure water / gas conveying device, and the lower end of the hollow screw rod is connected with a gate through a long hole extending in the vertical direction; the hollow screw rod can drive the gate to move up and down under the action of the driving device; a pressurizing water seal system is arranged on the periphery of the gate panel, and a gate sand disturbing system is further arranged on the gate panel. The pressurizing water seal system comprises a water seal structure and a pressurizing pipeline connected with the water seal structure, the pressurizing pipeline is connected with the hollow screw through a second high-pressure hose, a first one-way valve and a reversing water filling valve are sequentially arranged on the pressurizing pipeline in the pressurizing direction, and opening and closing of the reversing water filling valve are achieved through vertical movement of the hollow screw. The device is simple and compact in structure, has the core functions of transmitting opening and closing force and conveying water and gas, and achieves the dual purposes of water seal water filling and gate sand disturbing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gate structures of water conservancy projects such as reservoirs, sluices and pumping stations, and particularly relates to a water-filling and sand disturbing integrated gate structure. BACKGROUND

[0002] The existing gate has the following problems: 1) Gate water seal water filling (inflation) problem. The pressure expansion type water seal is commonly used for the gate of the domestic and foreign hydropower stations. Its core advantage is that it can realize efficient water sealing by filling water through the back cavity pressure pipeline under high water head conditions. However, the back cavity pressure pipeline (especially the high-pressure hose in the deep hole door groove) is damaged frequently, mainly due to two aspects: firstly, the hose is stretched and deformed due to the self-weight effect of being hung in the gate groove for a long time, which causes the water seal to fail to normally seal, and at the same time, under the condition of blockage or gate lifting head jamming, the back cavity pressure will suddenly drop or even lose pressure, which will cause a large amount of water to be sprayed around the gate; secondly, the hose is easily jammed into the gap between the slide or wound to the limiting support structure due to the violent swinging of the hose under the water flow during flood discharge, and is broken due to extrusion during the gate opening and closing process. The water sealing failure of such pressure expansion type water seal not only directly shows water leakage, but also induces the cutting, cavitation and flow-induced vibration of the gate and the door groove caused by the high-speed jet flow of the gap, and in severe cases, it can also cause cavitation damage and harmful vibration, which leads to the deformation of the gate, the failure of the gate to open and close, and other problems, so that the gate cannot be normally used, and the safety of the project operation is endangered.

[0003] 2) Gate front and rear sand disturbing problem. The gate of the reservoir, sluice and pumping station of the sand river generally faces the problem of sediment accumulation. When encountering high-sediment water flow, improper operation or gate leakage, significant sediment accumulation may occur on both sides of the front and rear of the gate. Such accumulation can greatly increase the opening resistance of the gate, causing the gate to fail to be lifted or lowered. Due to the extremely complex operating conditions of the hole and the gate under high-sediment conditions, the difficulty of treatment in deep water environment is significantly increased, and the gate opening and closing of the reservoir, sluice and pumping station in the technical field of water conservancy project gate is generally difficult. The flood discharge gate of the Wanjiazhai, Longkou and Sanmenxia water conservancy hubs on the main stream of the Yellow River has occurred several times. The influence of sediment on the opening and closing of the gate is increasing, which has seriously threatened the safe operation of the water conservancy hub and poses a major safety hazard. SUMMARY

[0004] In view of the problems of gate water seal water filling and gate front and rear sand disturbing in water conservancy and hydropower engineering, the present application proposes an integrated gate structure, which integrates the functions of gate opening and closing, water seal water filling and gate front and rear sand disturbing by means of a hollow screw rod capable of transmitting opening and closing force and conveying water and gas. Not only does it solve the problem of easy damage of the traditional back cavity pressure pipeline and improve the reliability of the system, but on the other hand, it also accurately disturbs the sand in front of the panel and behind the panel and the sill by means of a flexible shaft, effectively solving the problem of sediment accumulation during the opening and closing of the gate, and achieving the dual goals of reliable sealing and efficient sand disturbing.

[0005] The objective of this invention and the technical problem it solves are achieved by the following technical solution. According to this invention, an integrated water-filling and sand-dispersing gate structure includes a hollow screw with a high-pressure fluid inlet at the upper end and a closed lower end. The upper end of the hollow screw is connected to a high-pressure water / air conveying device, and the lower end is connected to the gate through an elongated hole extending vertically. The upper end of the hollow screw is also connected to a driving device through a threaded pair, which drives the gate to move up and down under the action of the driving device. A pressurized water seal system is provided on the outer periphery of the gate panel, and a gate sand-dispersing system is provided on the rear side of the gate panel. The pressurized water seal system includes a frame-shaped water seal structure and a pressurized pipe connected to the water seal structure. The pressurization pipeline has one end connected to a hollow screw rod via a second high-pressure hose. A first one-way valve and a reversing water filling valve are sequentially installed along the pressurization direction on the pressurization pipeline. The opening and closing of the reversing water filling valve is achieved by the up-and-down movement of the hollow screw rod. The gate sand-dispersing system includes a pipeline system distributed on the rear side of the gate panel and nozzles connected to the pipeline system, which respectively disperse sand on the front, rear, and bottom sill of the gate panel. A control valve is installed at the inlet end of the pipeline system, and the opening and closing of the control valve is remotely controlled via a flexible shaft. The pipeline system is connected to the hollow screw rod via the first high-pressure hose.

[0006] The objectives of this invention and the technical problems it addresses can be further achieved by the following technical measures.

[0007] The aforementioned integrated water-filling and sand-disturbing gate structure includes a reversing water-filling valve comprising an inlet connected to a first one-way valve, an outlet connected to a water seal structure, a drain outlet at the lower end for discharging internal fluid, and a valve stem for controlling the opening and closing of the drain outlet, the valve stem being connected to a hollow screw.

[0008] The aforementioned integrated water-filling and sand-disturbing gate structure also includes a one-way valve at the drain outlet to prevent external water or air from entering the reversing water-filling valve.

[0009] The aforementioned integrated water-filling and sand-disturbing gate structure has a lifting lug at the upper end of the gate. The lifting lug is connected to a hollow screw rod through an elongated hole. When the outlet of the reversing water-filling valve is closed, the hollow screw rod is located at the uppermost position of the elongated hole, and the length of the elongated hole is not less than the vertical movement stroke of the hollow screw rod when the reversing water-filling valve is opened and closed.

[0010] The aforementioned integrated water-filling and sand-disturbing gate structure includes a pipeline system comprising two parts: a front part and a rear part. Both the front and rear parts are equipped with control valves and check valves to prevent backflow of fluid at their fluid inlet ends. Each control valve is connected to a flexible shaft. The lower end of the front part has multiple sets of nozzles that jet fluid towards the front side of the gate panel, distributed from top to bottom. The rear part is further divided into a first part and a second part that are parallel to each other. The lower end of the first part has multiple sets of nozzles that jet fluid towards the rear side of the gate panel along the height direction. The second part extends to the bottom sill of the gate and has a set of nozzles at the bottom sill.

[0011] The nozzle for jetting water to the front side of the gate panel is a self-closing nozzle penetrating the gate panel.

[0012] The self-closing nozzle comprises a nozzle body fixed to the rear side of the gate panel, a jetting part at the front end of the nozzle body is located in a through hole on the gate panel, an elastic member is arranged in the nozzle body to prevent the jetting part from extending out of the front side of the gate panel, a plurality of jetting holes are arranged around the jetting part, the inner diameter of the nozzle body is smaller than the inner diameter of the through hole on the gate panel, and a sealing ring fixed to the front end face of the nozzle body has an inner diameter corresponding to that of the nozzle body and can realize sealing between the jetting part and the nozzle body.

[0013] The nozzle for jetting water to the front side of the gate panel is a hollow bolt which realizes the fixing of the water seal structure and the jetting sand disturbing function at the same time.

[0014] The jetting hole of the hollow bolt is located on the end face or the side face of the end to realize axial jetting or lateral jetting.

[0015] The bottom water seal structure of the gate panel is simultaneously provided with hollow bolts for axial jetting, lateral upper jetting and lateral lower jetting.

[0016] Compared with the prior art, the water filling and sand disturbing integrated gate structure has obvious advantages and beneficial effects. By means of the above technical scheme, the water filling and sand disturbing integrated gate structure can achieve considerable technical progress and practicability and has wide industrial utilization value, and at least has the following advantages: The water filling and sand disturbing integrated gate structure adopts a clear rod type hollow screw structure which is simple and compact, has the core functions of transmitting opening and closing force and conveying water and air, realizes the double goals of water seal water filling (air filling) and front and rear sand disturbing of the gate, on one hand, controls the water seal water filling and air filling through the long circular hole stroke control reversing water filling valve on the lifting lug, ensures the normal water sealing of the gate, and on the other hand, accurately performs the front sand disturbing of the panel and the rear and sill sand disturbing of the panel through the soft shaft control valve, and assists the normal opening and closing of the gate.

[0017] The water filling and sand disturbing integrated gate adopts a clear rod type hollow screw structure which is simple and compact, has the core functions of transmitting opening and closing force and conveying water and air, realizes the double goals of water seal water filling and gate sand disturbing, on one hand, controls the water seal water filling and air filling through the long circular hole stroke control reversing water filling valve on the lifting lug, ensures the normal water sealing of the gate, and on the other hand, accurately performs the front sand disturbing of the panel and the rear and sill sand disturbing of the panel through the soft shaft control valve, and assists the normal opening and closing of the gate.

[0018] The water filling and sand disturbing integrated gate structure also has the following advantages: (1) Adopting the structure of the hollow core screw rod, the system has the functions of water and gas transmission and delivery, and realizes the highly integrated design while simplifying the overall structure; (2) The integrated gate system for water filling and sand disturbing is proposed, which synchronously achieves the double goals of water sealing and water filling and sand disturbing operation, and significantly improves the system cooperation efficiency; (3) The hollow core screw rod is used as a medium channel to solve the problem of easy damage of the traditional back cavity pressurization pipeline, and improve the system reliability; (4) The hollow core screw rod is used as a medium channel, and the soft shaft is used to accurately perform the sand disturbing action in front of the panel and the sand disturbing action behind the panel and the sill, so as to effectively solve the problem of sediment accumulation in the gate opening and closing process. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structure principle diagram of the integrated gate system for water filling and sand disturbing; Figure 2 It is a front view of the gate water sealing, water filling and air filling system; Figure 3 It is a sectional view of the gate water sealing, water filling and air filling system; Figure 4 It is a structure diagram of the screw rod control water sealing, water filling and air filling; Figure 5 It is a front view of the gate sand disturbing system; Figure 6 It is a sectional view of the gate sand disturbing system; Figure 7 It is a schematic diagram of the front sand disturbing system of the gate panel in the first embodiment of the application; Figure 8 It is a sectional view of Figure 7 ; Figure 9 It is a schematic diagram of the nozzle in the non-pressure retraction state in the first embodiment of the application; Figure 10 It is a schematic diagram of the nozzle in the pressure extension state in the first embodiment of the application; Figure 11 It is a schematic diagram of the front sand disturbing system of the gate panel in the second embodiment of the application; Figure 12 It is a schematic diagram of the hollow core screw bolt structure of the second embodiment of the application; Figure 13 It is a schematic diagram of the hollow core screw bolt structure of the second embodiment of the application.

[0020]

MAIN ELEMENT SYMBOL EXPLANATION

[0021] To further clarify the technical means and effects taken by the present application to achieve the predetermined inventive purpose and its effects, the specific implementation, structure, features and effects of the water filling and sand disturbing integrated gate according to the present application are described in detail as follows in combination with the drawings and preferred embodiments.

[0022] Please refer to Figures 1-10 , which is a schematic diagram of the structure of the water filling and sand disturbing integrated gate according to the first embodiment of the present application. The gate structure includes a water seal system for realizing the sealing of the gate, a gate sand disturbing system for realizing the sand disturbing function at the front and back of the gate and the sill, and a hollow screw 1 with an open upper end and a closed lower end. The upper end of the hollow screw 1 is connected with a high-pressure water / gas delivery device 101. The hollow screw 1 is connected with the gate sand disturbing system through a first high-pressure hose 2 to deliver high-pressure water or high-pressure gas to the gate sand disturbing system. The hollow screw 1 is connected with the water seal system through a second high-pressure hose 10 to deliver high-pressure water or high-pressure gas to the water seal system. The upper end of the hollow screw 1 is also connected with a driving device 102, which drives the hollow screw 1 to move up and down. The lower end of the hollow screw 1 is also connected with the gate, which is driven by the driving device 102 to lift the gate.

[0023] The water seal system includes a frame-shaped water seal structure 9 and a pressurizing pipeline 91 connected with the pressurizing cavity of the water seal structure 9. The other end of the pressurizing pipeline 91 is connected with the second high-pressure hose 10. A reversing water filling valve 5 is arranged on the pressurizing pipeline 9. The valve rod of the reversing water filling valve 5 is connected with the hollow screw 1, which drives the valve rod to move up and down, thereby opening and closing the reversing water filling valve 5. A first one-way valve 92 is also arranged on the pressurizing pipeline 9. The reversing water filling valve 5 is located between the water seal structure 9 and the first one-way valve 92. The first one-way valve 92 is used to prevent gas / liquid from being delivered from the water seal structure 9 to the second high-pressure hose 10.

[0024] The reversing water filling valve 5 includes left and right water inlets 51 and water outlets 52 and a lower water outlet 53. The water inlet 51 is connected with the first one-way valve 92, and the water outlet 52 is connected with the water seal structure 9. In the open state of the reversing water filling valve 5, the lower end of the valve rod 54 blocks the water outlet 53. High-pressure water / gas is delivered from the first one-way valve 92 to the water seal structure 9, so that the water seal structure 9 is filled with high-pressure water / gas, thereby ensuring the sealing of the gate. In the closed state of the reversing water filling valve 5, the valve rod 54 moves upward to unblock the water outlet 53. High-pressure water / gas enters the reversing water filling valve 5 through the first one-way valve 92 or the water seal structure 9 and is discharged from the lower water outlet 53 of the reversing water filling valve 5. The water / gas in the water seal structure 9 is discharged from the pressurizing cavity, so that the gate is unsealed and can be lifted and opened.

[0025] The drain port 53 is also provided with a one-way valve for preventing external water or gas from entering the reversing water filling valve 5 through the drain port 53. Preferably, the one-way valve is a right-angle one-way valve.

[0026] To ensure that the water seal structure 9 can be depressurized and unsealed before the gate is opened, that is, to ensure that the reversing water filling valve 5 can be closed before the gate is moved upward, the hollow screw rod 1 and the gate are connected through a long hole 11 extending in the vertical direction. When the reversing water filling valve 5 is in the closed state, the long hole 11 limits the upward movement of the hollow screw rod. At this time, continuing to move the hollow screw rod 1 upward can drive the gate to move upward together. The length of the long hole 11 is not less than the vertical movement stroke L of the valve rod when the reversing water filling valve 5 is opened and closed, so that when the valve rod is driven to move downward by the hollow screw rod 1 to open the reversing water filling valve 5, the long hole 11 will not interfere with the hollow screw rod 1.

[0027] In the embodiment of the application, the gate upper end is provided with a lifting lug for connecting with the hollow screw rod 1, and the long hole 11 is arranged on the lifting lug, but it is not limited thereto.

[0028] When the pressure water seal system needs to be pressurized, the water source (air source) is delivered to the gate proximal end through the hollow screw rod 1, then delivered to the reversing water filling valve 5 through the second high-pressure hose 10 and the first one-way valve 92, and the stroke of the long hole 11 on the gate lifting lug controls the opening and closing of the water filling reversing valve 5. When the gate is fully closed to the position where the reversing water filling valve 5 is opened (the valve rod moves to the lowermost position to close the drain port), the water seal is filled with water (filled with air), and the water seal is expanded to play a water stopping role. When the gate is lifted to the position where the reversing water filling valve 5 is closed (the valve rod moves upward to open the drain port), the water seal is drained (air is released), and the water seal is retracted to release the water stopping and sealing effect.

[0029] The gate sand disturbing system comprises a pipeline system 6 fixed behind the gate panel 103, which comprises a first main pipe 61 for connecting with the first high-pressure hose 2, the first main pipe 61 extends in vertical direction, and the upper end thereof is connected with the first high-pressure hose 2, and the lower end thereof is connected with the first horizontal branch pipe 62 and the second horizontal branch pipe 63 through a tee structure, the first horizontal branch pipe 62 is provided with the first control valve 3, and the second horizontal branch pipe 62 is provided with the second control valve 4; wherein the first horizontal branch pipe 62 extends to the front side of the gate panel and is connected with the first vertical branch pipe 64, and the second horizontal branch pipe 63 extends to the direction away from the front side of the gate panel and is connected with the second vertical branch pipe 65, wherein the upper end of the first vertical branch pipe 64 is provided with the second one-way valve 66 for preventing water / gas from being transported upward from the lower end, and the first vertical pipe 64 is provided with multiple layers of nozzles in the lower part thereof through a horizontal pipe for realizing jet flow sand disturbing at different heights of the front side of the gate panel 103. In this embodiment, the nozzles arranged on the first vertical pipe 64 are self-closing nozzles 7, which are in a closed state in the state of no fluid pressure in the pipeline, and the front nozzles are stretched out in the state of high-pressure fluid in the pipeline to realize jet flow sand disturbing. The front end of the self-closing nozzle 7 is sealingly fixed in the through hole on the gate panel 103, and in the self-closing state, the front jet flow part thereof is located in the through hole on the gate panel 103, when high-pressure fluid is supplied, the front jet flow part of the self-closing nozzle is stretched out from the front side of the gate panel and sprays high-pressure fluid.

[0030] In this embodiment, the self-closing nozzle 7 comprises a nozzle body 71, the outer periphery of which is in a stepped shaft structure with the front small and the rear large, and the front end of the nozzle body 71 is located in the through hole on the gate panel 103, and the rear end is fixed on the rear side of the gate panel 103 and is in abutting cooperation with the rear end face of the gate panel 103, and the nozzle body 71 and the gate panel 103 are in sealing cooperation. The nozzle body 71 is further provided with an elastic member 72 and a jet flow part 73 in the inside thereof, and the jet flow part 73 is kept in the front end cavity of the nozzle body 71 under the elastic action of the elastic member 72. The nozzle body 71 has an inner diameter cavity with the front large and the rear small, wherein the elastic member 72 is located in the small-diameter cavity at the rear end, and the jet flow part 73 is located in the large-diameter cavity at the front end, and the jet flow holes 731 on the jet flow part 73 are distributed in the radial direction, and there is a spacing between the jet flow holes 731 and the inner wall of the nozzle body 73. The large-diameter cavity at the front end and the small-diameter cavity at the rear end of the nozzle body form a stepped face 711, and the stepped face 711 is fixedly provided with a sealing ring 74, the sealing ring 74 is coaxially arranged in the rear end cavity of the nozzle body, and the inner diameter thereof is slightly larger than the inner diameter of the rear end cavity, and the front end face thereof is in sealing cooperation with the jet flow part 73, so that the fluid sprayed from the small-diameter cavity at the rear end of the nozzle body 71 impacts the jet flow part 73 in a high-pressure state, and finally pushes the jet flow part 73 to stretch out forwardly against the elastic force of the elastic member. In the embodiment of the present application, the front end of the nozzle body 71 is composed of the through hole on the gate panel, but it is not limited thereto. Preferably, the elastic member 72 is a spring.

[0031] The second vertical branch pipe 65 is provided with a third one-way valve 67 for preventing upward fluid delivery, and the lower end of the second vertical branch pipe 65 is connected with two vertical branch pipes through two horizontal branch pipes, and the lower ends of the two vertical branch pipes are connected with the nozzle through horizontal pipes at the position below the back side of the gate panel and at the gate sill, so that the jet flow disturbs the sand at the back side of the gate panel and at the gate sill.

[0032] In the embodiment of the application, three layers of nozzles are distributed from top to bottom at the front side of the gate panel, two layers of nozzles are distributed from top to bottom at the back side of the gate panel, and one layer of nozzles is distributed at the gate sill, but the application is not limited thereto, and the number and position of the nozzles can be adjusted as needed.

[0033] The first control valve 3 is connected with the first soft shaft 105, and the second control valve 4 is connected with the second soft shaft 104, so that the opening and closing of the first control valve 3 and the second control valve 4 are remotely controlled through the first soft shaft 105 and the second soft shaft 104.

[0034] The gate sand disturbing system of the application remotely controls the opening and closing of the valve through the soft shaft rotation, drives the front sand disturbing of the panel and the sand disturbing of the back panel and the sill, and simultaneously, the one-way valve is installed at the lower end of the control valve pipeline, so that the water and gas in the pipeline can only flow in one direction, and the medium backflow is effectively prevented. Since the sand disturbing system is only used in a specific short period of time every year, the control valve is designed to be in a normally closed state, and simultaneously, the matched control soft shaft adopts a modular disassembly and assembly structure, and is separated from the valve during the daily operation, and is only quickly connected and drives the valve to be opened during the sand disturbing operation. In addition, the pipeline of the gate sand disturbing system is connected with the front and back of the gate panel through the self-closing nozzle, the self-closing nozzle penetrates the gate panel, the self-closing nozzle can select different angle jet flow holes, and the multi-angle jet flow can be performed, and the number, angle and position of the self-closing nozzle are determined in combination with the actual situation. The self-closing nozzle has the functions of returning without compression, extending with pressure, and preventing sand from being blocked, and the self-closing nozzle does not affect the normal opening and closing of the gate, and if the single effect of the gate sand disturbing system is poor, the front and back sand disturbing of the panel can be performed for multiple times for a long time, and the sand disturbing can also be performed regularly, so that the cumulative accumulation of the sand in front of and behind the panel is avoided.

[0035] Please refer to Figures 11-13The hollow screw rod 1 is a clear rod type hollow screw rod, the hollow screw rod 1 takes transmission of opening and closing force and water and gas delivery as core functions, and operation is realized through manual or motor driving; the screw pair driven hollow screw rod is lifted synchronously with the gate, precise control is ensured; the hollow screw rod is selected from high-quality carbon steel or stainless steel material, is treated through surface nitriding or chromizing process, and wear resistance and corrosion resistance are improved; in terms of size specifications, the screw rod outer diameter is selected from the range of 40-200mm, the inner diameter is 20-150mm, and multiple screw rods can be connected through threads in deep hole working conditions, and the screw rods are in a connected state. The position above the connection between the screw rod and the gate is provided with two sets of high-pressure hoses, the vertical extension amount of the high-pressure hoses is greater than the lifting head stroke, one set of high-pressure hoses is connected with the water seal water filling and air filling system pipeline, and the other set of high-pressure hoses is connected with the gate sand disturbing system pipeline.

[0036] When the gate sand disturbing system of the present application works, a water source (air source) is delivered to the gate proximal end through the hollow screw rod 1, and then connected to the gate front control valve through the first high-pressure hose 2, wherein the two sets of gate front control valves are remotely controlled by the first soft shaft and the second soft shaft respectively. When the first soft shaft remotely opens the first control valve, the front sand disturbing of the gate panel is performed; when the second soft shaft remotely opens the second control valve, the rear sand disturbing of the gate panel and the sill is performed. The front sand disturbing and the rear sand disturbing can work independently or simultaneously, assist the gate opening and closing, and solve the problem that sediment accumulation affects the gate opening and closing. Since the sand disturbing system is only used in a specific short period every year, the control valve is in a normally closed state, and meanwhile, the matched control soft shaft adopts a modular disassembly structure, can be separated from the valve during daily operation, and is connected and put into use only during sand disturbing operation.

[0037] In the embodiment of the present application, the hollow screw rod 1 is a clear rod type hollow screw rod, the hollow screw rod 1 takes transmission of opening and closing force and water and gas delivery as core functions, and operation is realized through manual or motor driving; the screw pair driven hollow screw rod is lifted synchronously with the gate, precise control is ensured; the hollow screw rod is selected from high-quality carbon steel or stainless steel material, is treated through surface nitriding or chromizing process, and wear resistance and corrosion resistance are improved; in terms of size specifications, the screw rod outer diameter is selected from the range of 40-200mm, the inner diameter is 20-150mm, and multiple screw rods can be connected through threads in deep hole working conditions, and the screw rods are in a connected state. The position above the connection between the screw rod and the gate is provided with two sets of high-pressure hoses, the vertical extension amount of the high-pressure hoses is greater than the lifting head stroke, one set of high-pressure hoses is connected with the water seal water filling and air filling system pipeline, and the other set of high-pressure hoses is connected with the gate sand disturbing system pipeline.

[0038] The water filling and sand disturbing integrated gate structure of the application is divided into water sealing and water filling working process and gate disturbing working process, which can be carried out according to the site conditions, and the specific implementation process is as follows: Taking the water retaining and sand retaining function of an accident gate of a drainage tunnel of a water conservancy project in a basin as an example, a water filling and sand disturbing integrated gate structure is introduced. The drainage tunnel of the water conservancy project has three tunnels, which are responsible for the tasks of reservoir flood discharge and sand discharge, and are respectively provided with an inlet maintenance gate, an accident gate and a working gate. The gate type is a flat plate fixed wheel, the gate water seal is an upstream side water stop, the accident gate hole size is 3m*3m, the gate size is 4m*3m*1.5m, the gate weight is 20t, the opening and closing mode is a 50KN winch, the lifting height is 20m, the gate front sediment accumulation height is 3m, and the gate front sediment accumulation height is 2m. The specific implementation steps are as follows: 1. Water sealing and water filling system working process The water sealing and water filling pressure is set to 0.5Mpa in combination with the gate front water level. When the gate is fully closed to the downward position of the reversing valve, water sealing and water filling is carried out, the water sealing and water filling expands to play the role of water stop, and the gate is closed to retain water. When the gate is lifted to the upward position of the reversing valve, water sealing and water drainage is carried out, the water sealing and water drainage retracts to stop the water stopping effect, and the gate is normally lifted.

[0039] 2. Gate disturbing system working process (1) Select relevant technical parameters according to the characteristics of accumulated sediment According to the results of sediment sampling characteristics and facility and equipment operation condition analysis, as well as the reservoir water level, 3m of sediment accumulation in front of the gate, 2m of sediment accumulation behind the gate, 1.1t / m 3 of water solution weight during discharge, 1.05t / m 3 of water solution weight during non-discharge, 1.6t / m 3 of saturated sediment bulk density, 10° of sediment internal friction angle and other technical parameters, water source sand disturbing mode is selected to assist the gate opening and closing before and after the gate, and the water source pressure is set to 1.2Mpa and the flow is 50m 3 / h. (2) Open the front and rear sand disturbing system to assist the gate opening and closing First, open the external water source, and then open the remote device to open the front and rear control valves, and then the front and rear sand disturbing works simultaneously for 15 minutes, and then the gate is opened and closed. If the effect is not good, the front and rear sand disturbing can be carried out for a long time. At the same time, sand disturbing can also be carried out regularly to avoid the accumulation of sediment in front of the panel.

[0040] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been described as above with reference to the preferred embodiments, the present application is not intended to be limited to the preferred embodiments. Any person skilled in the art, without departing from the technical solution of the present application, can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, as long as it does not deviate from the technical solution of the present application, still belongs to the scope of the technical solution of the present application.

Claims

1. A water-filled and sand-dispersing integrated gate structure, characterized in that, The system includes a hollow screw with a high-pressure fluid inlet at the top and a closed bottom. The upper end of the hollow screw is connected to a high-pressure water / air conveying device, and the lower end is connected to a gate through an elongated hole extending vertically. The hollow screw can drive the gate to move up and down under the action of a driving device. A pressurized water seal system is provided on the outer periphery of the gate panel, and a gate sand-dispersing system is also provided on the gate panel. The pressurized water seal system includes a water seal structure and a pressurized pipe connected to the water seal structure. The pressurized pipe is connected to the hollow screw through a second high-pressure hose. A first one-way valve and a reversing water-filling valve are sequentially provided on the pressurized pipe along the pressurization direction. The opening and closing of the reversing water-filling valve is achieved by the up and down movement of the hollow screw. The gate sand-dispersing system includes a pipeline system and nozzles connected to the pipeline system to disperse sand on the front, rear, and bottom sill of the gate panel, respectively. A control valve is provided at the inlet end of the pipeline system. The opening and closing of the control valve is remotely controlled by a flexible shaft. The pipeline system is connected to the hollow screw through the first high-pressure hose.

2. The integrated water-filling and sand-dispersing gate structure according to claim 1, characterized in that, The reversing water filling valve includes an inlet connected to a first one-way valve, an outlet connected to a water seal structure, a drain outlet at the lower end for discharging internal fluid, and a valve stem for controlling the opening and closing of the drain outlet, the valve stem being connected to a hollow screw.

3. The integrated water-filling and sand-dispersing gate structure according to claim 2, characterized in that, The drain outlet is also equipped with a one-way valve to prevent external water or air from entering the reversing water filling valve through the drain outlet.

4. The integrated water-filling and sand-dispersing gate structure according to claim 2, characterized in that, The gate is provided with a lifting lug at the upper end. The lifting lug is connected to the hollow screw rod through a long hole. When the outlet of the reversing water filling valve is closed, the hollow screw rod is located at the uppermost position of the long hole, and the length of the long hole is not less than the vertical movement stroke of the hollow screw rod when the reversing water filling valve is opened and closed.

5. The integrated water-filling and sand-dispersing gate structure according to claim 4, characterized in that, The piping system is located behind the gate panel and consists of two parts, front and rear. Both the front and rear parts are equipped with control valves and check valves to prevent backflow of fluid at their fluid inlet ends. Each control valve is connected to a flexible shaft. The lower end of the front part has multiple sets of nozzles that jet fluid toward the front of the gate panel from top to bottom. The rear part is further divided into a first part and a second part that are parallel to each other. The lower end of the first part has multiple sets of nozzles that jet fluid toward the rear of the gate panel along the height direction. The second part extends to the bottom sill of the gate and has a set of nozzles at the bottom sill of the gate.

6. The integrated water-filling and sand-dispersing gate structure according to claim 5, characterized in that, The nozzle that jets water to the front of the gate panel is a self-closing nozzle that passes through the gate panel.

7. The integrated water-filling and sand-dispersing gate structure according to claim 6, characterized in that, The self-closing nozzle includes a nozzle body fixed to the rear side of the gate panel. The jetting part at the front end of the nozzle body is located in the through hole on the gate panel. The nozzle body is also provided with an elastic element to prevent the jetting part from extending out of the front side of the gate panel. The jetting part is provided with multiple spray holes in the circumference. The inner diameter of the nozzle body is smaller than the inner diameter of the through hole on the gate panel. The sealing ring fixed to the front end face of the nozzle body has an inner diameter equivalent to that of the nozzle body and can achieve a seal between the jetting part and the nozzle body.

8. The integrated water-filling and sand-dispersing gate structure according to claim 6, characterized in that, The nozzle that jets water onto the front side of the gate panel is a hollow bolt, which simultaneously serves to fix the water seal structure and to dredge the sand with the jet.

9. The integrated water-filling and sand-dispersing gate structure according to claim 8, characterized in that, The jet hole of the hollow bolt is located on the end face or the end side to achieve axial jet or lateral jet.

10. The integrated water-filling and sand-dispersing gate structure according to claim 9, characterized in that, Hollow bolts for axial jet, side-up jet, and side-down jet are distributed simultaneously at the bottom water seal structure of the gate panel.

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