Double-water-seal down-the-hole type plane gate arrangement structure for water conservancy and hydropower engineering

Abstract

The utility model discloses a double-water-seal down-the-hole type plane gate arrangement structure for water conservancy and hydropower engineering, a water seal is arranged on each of the front side and the rear side of a down-the-hole type plane steel gate of a front panel, a main water seal is located on the front side of the gate, an auxiliary water seal is located on the rear side of the gate, and the main water seal and the auxiliary water seal share a bottom water seal. The lintel embedded part on the upstream breast wall paired with the main water seal and the lintel embedded part on the downstream breast wall paired with the auxiliary water seal are arranged at different heights, the position of the lintel embedded part on the upstream breast wall is relatively low, and the position of the lintel embedded part on the downstream breast wall is relatively high, so that the main water seal seals water when the gate blocks water, and the lintel embedded part on the downstream breast wall seals water when the gate blocks water. Water is not sealed in the opening and closing process of the gate, and the auxiliary water seal seals water in the opening and closing process of the gate and does not seal water when the gate blocks water. In the gate opening and closing process, through coordination and cooperation of the main water seal and the auxiliary water seal, the balance weight of the gate is reduced or eliminated, the gate opening force of the gate is reduced, engineering implementation and operation management are facilitated, and engineering investment can be reduced.

Description

Technical Field

[0001] The utility model relates to an under-sluice plane gate, in particular to an arrangement structure of a double-water-seal plane gate for water conservancy and hydropower projects. Background Technique

[0002] The plane gate is a common type of gate in water conservancy and hydropower projects, and is often used for maintenance gates, emergency gates, and working gates with relatively low water heads. There are many types of plane gates. According to different classification criteria, plane gates can be divided into various types. For example, according to the orifice type of the gate, plane gates can be divided into shallow-orifice type and under-sluice type; according to the support type of the gate, plane gates can be divided into fixed-wheel gates and sliding gates; according to the front and rear positions of the gate panel, they can be divided into front-panel gates and rear-panel gates; according to the water-seal position of the gate, they can be divided into front-water-stop gates and rear-water-stop gates, etc.

[0003] The water-stop rubber of the front-panel under-sluice plane gate can be arranged on the front side of the gate or on the rear side of the gate. Each of the two arrangement methods has its own advantages and disadvantages. When the water stop is arranged on the front side of the gate, the beam grid structure and the top of the gate are in a waterless state, and the overall working environment of the gate is relatively good, which is conducive to the management and maintenance of the gate. Especially when there is a large amount of sediment in the front reservoir area or water area, it is not easy for sediment to accumulate on the top and in the beam grid of the gate, forming siltation and even submerging the gate. When the water stop is arranged on the rear side of the gate, the top of the front-panel under-sluice plane gate is in a submerged state, and a water column is formed on the top of the gate, which can be used to assist in closing the gate. The advantages and disadvantages of arranging the water stop on the front side and the rear side are exactly the opposite, that is, the advantages of the former are the disadvantages of the latter, and the disadvantages of the former are also the advantages of the latter.

[0004] The calculation and selection of the hoisting equipment is an important link in the design of the gate. The closing force and opening force of the gate need to meet the engineering requirements. During the opening and closing process of the gate, the self-weight of the gate is one of the main factors affecting the closing. In some cases, when the self-weight of the gate is not sufficient to close the gate smoothly, additional counterweights need to be added or other measures need to be taken to assist in closing the gate. Other measures include: forming a water column on the top of the gate and using the pressure of the water column to assist in closing the gate; or using a hydraulic hoist, a screw hoist and other hoisting machinery with the function of providing downward pressure; or using materials with a low friction coefficient to reduce the frictional resistance caused by water pressure, etc.

[0005] Using gate counterweights to assist in closing the gate is a mature and feasible method, but under certain conditions, the arrangement of gate counterweights can be quite troublesome. For example, when the gate is small and requires a large amount of counterweights, the available space of the gate leaf structure (including the internal space of the gate leaf and the space above the gate top) is limited, and the arrangement of the counterweights on the gate will be very difficult. Considering the factors such as the need to set up lifting ears on the top of the gate and the increase in the center of gravity of the gate, the design, production, installation and management of the gate and its counterweights are all much more difficult. Too many gate counterweights increase the design difficulty of the gate and increase the gate opening force. Utility Model Content

[0006] In view of the problems existing in the prior art, the utility model provides a double water-seal submerged hole flat gate arrangement structure for water conservancy and hydropower projects. The main water seal, auxiliary water seal and bottom water seal together form a closed water retaining system, which fills the gap between the gate and the embedded parts and isolates the water flow upstream and downstream of the gate.

[0007] The utility model is realized in this way. A double water seal submerged hole type plane gate arrangement structure for water conservancy and hydropower engineering includes a gate and a concrete breast wall. A water seal is arranged on both sides of the front and rear of the submerged hole type plane steel gate of the front panel. The main water seal is located on the front side of the gate, and the auxiliary water seal is located on the rear side of the gate. The main water seal is arranged along the top edge and both sides of the upstream side panel, and the auxiliary water seal is arranged along the top main beam and the rear flange plate of the side beam on the downstream side of the gate. The main water seal and the auxiliary water seal share a bottom water seal. The main water seal and the auxiliary water seal are effectively connected with the bottom water seal; the lintel embedded parts on the upstream breast wall which is dual to the main water seal and the lintel embedded parts on the downstream breast wall which is dual to the auxiliary water seal are arranged at unequal heights, the lintel embedded parts on the upstream breast wall are relatively low, and the lintel embedded parts on the downstream breast wall are relatively high, so that the main water seal seals water when the gate blocks water, and does not seal water during the opening and closing process of the gate, and the auxiliary water seal seals water during the opening and closing process of the gate, and does not seal water when the gate blocks water.

[0008] The main water seal and the auxiliary water seal have the same water blocking direction, and the water blocking direction is from upstream to downstream.

[0009] The upper and lower ends of the door lintel embedded part of the downstream breast wall are both provided with smooth chamfers to facilitate the passage of the secondary water seal under extrusion.

[0010] The utility model has the advantages and technical effects of: adding a waterproof rubber on the downstream side of the gate leaf of the ordinary front panel front water-stop type submerged flat gate to form a gate top water column during the gate opening and closing process, using the water pressure of the gate top water column to assist in closing the gate, replacing the role of excessive counterweights required by flat gates under certain specific conditions in the gate closing process, and at the same time reducing the gate opening force. The double water-seal flat gate optimizes the gate counterweight structure design, facilitates the manufacture and installation of the gate, saves project investment, and reduces the project operation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is the longitudinal sectional view of the water retaining state of the double water seal submerged orifice plane gate layout structure of the present utility model for water conservancy and hydropower projects;

[0012] Figure 2 This is the transverse sectional view of the water retaining state of the double water seal submerged orifice plane gate layout structure of the present utility model for water conservancy and hydropower projects;

[0013] Figure 3 This is the schematic diagram at the initial stage of closing the double water seal submerged orifice plane gate layout structure of the present utility model for water conservancy and hydropower projects;

[0014] Figure 4 This is the schematic diagram of the state before closing the double water seal submerged orifice plane gate layout structure of the present utility model for water conservancy and hydropower projects;

[0015] Figure 5 This is the schematic diagram of the closed state of the double water seal submerged orifice plane gate layout structure of the present utility model for water conservancy and hydropower projects;

[0016] Figure 6 This is the schematic diagram of the gate opening state of the double water seal submerged orifice plane gate layout structure of the present utility model for water conservancy and hydropower projects

[0017] In the figure, 1 - gate, 2 - main water seal, 3 - secondary water seal, 4 - bottom water seal, 5 - upstream breast wall, 6 - downstream breast wall, 7 - water column at the top of the gate Specific implementation manners

[0018] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the following further elaborates on the present utility model in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely used to explain the present utility model and are not used to limit the present utility model.

[0019] In the description of the creation of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the creation of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the creation of the present utility model.

[0020] In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features.

[0021] Accordingly, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the creation of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more than two.

[0022] In the description of the creation of the present utility model, it should be noted that, unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the creation of the present utility model can be understood through specific circumstances.

[0023] As Figure 1 , 2 As shown in the figure, the double-water-seal submerged orifice type plane gate layout structure for water conservancy and hydropower projects of the present utility model includes a gate 1 and a concrete breast wall. A water seal is provided on each of the front and rear sides of the submerged orifice type plane steel gate of the front panel. The main water seal 2 is located on the front side of the gate 1, and the secondary water seal 3 is located on the rear side of the gate 1. The main water seal 2 is arranged along the top edge and both side edges of the upstream side panel, and the secondary water seal 3 is arranged along the top main beam and the rear flange plate of the side beam on the downstream side of the gate. The main water seal and the secondary water seal share a bottom water seal 4, and the main water seal 2 and the secondary water seal 3 are effectively connected to the bottom water seal 4; the lintel embedment on the upstream side breast wall 5 opposite to the main water seal 2 and the lintel embedment on the downstream side breast wall 6 opposite to the secondary water seal are arranged at unequal heights. The position of the lintel embedment on the upstream side breast wall 5 is relatively low, and the position of the lintel embedment on the downstream side breast wall 6 is relatively high, so that the main water seal 2 seals water when the gate is blocking water and does not seal water during the opening and closing process of the gate, and the secondary water seal 3 seals water during the opening and closing process of the gate and does not seal water when the gate is blocking water.

[0024] The main water seal 2 and the secondary water seal 3 have the same water-blocking direction, and the water-blocking direction is from upstream to downstream.

[0025] Smooth chamfers are provided at both the upper and lower ends of the lintel embedment of the downstream side breast wall to facilitate the passage of the secondary water seal under extrusion.

[0026] When the gate is opened and closed, the water column at the top of the gate is used to assist in closing the gate; when the gate is completely closed, the water flow at the top of the gate is discharged; when the gate is opened, there is no water column or a small amount of water column acting on the top of the gate.

[0027] Specifically, a main water seal 2 is arranged along the periphery of the panel on the upstream side of the gate 1 in the water retaining direction, and a secondary water seal 3 is arranged along the rear flange plates of the top main girders and side girders of the gate 1. The water stopping directions of both the main water seal 2 and the secondary water seal 3 are from upstream to downstream, that is, both can independently bear the water pressure in the upstream direction. Both the main water seal 2 and the secondary water seal 3 are connected to the bottom water seal 4 at the bottom of the gate 1 to form a closed water retaining structure. The bottom water seal 4 can be either near the front side panel of the gate 1 or at any position between the panel of the gate 1 and the rear flange plate of the side girder.

[0028] As Figure 3 shown, at the initial stage of closing the gate 1, the gate 1 descends downward along the gate slot, and at this time, the gate 1 is submerged in the water body of the gate well.

[0029] As Figure 4 shown, it is a schematic diagram of the state before closing the double water seal plane gate. The secondary water seal 3 contacts the embedded part on the downstream breast wall 6 prior to the main water seal 2 contacting the embedded part on the upstream breast wall 5 and is in a pre-compressed state, that is, when the secondary water seal 3 is pre-compressed on the downstream breast wall 6, there is a certain gap between the main water seal 2 and the upstream breast wall 5, so that the water column 7 above the gate 1 is in communication with the upstream reservoir water. When the secondary water seal 3 is in a pre-compressed state with the downstream breast wall 6, the water column 7 above the gate is in a cut-off state with the water flow downstream of the gate 1, and the water column 7 above the gate will maintain a certain height. If the water column 7 above the gate loses a lot during the closing process, the descent of the gate 1 can be paused, and the upstream reservoir water can be supplemented to the top of the gate 1 through the gap between the main water seal 2 and the upstream breast wall 5 to raise the water column 7 above the gate. When the water column 7 above the gate is high enough, using the pressure of the water column 7 above the gate, the gate 1 can smoothly descend to the bottom sill.

[0030] When the gate 1 descends to the bottom sill, the main water seal 2 is pre-compressed on the embedded part on the upstream breast wall 5, cutting off the communication channel between the upstream reservoir water and the water column 7 above the gate; the bottom of the downstream breast wall 6 is higher than the water retaining height of the secondary water seal 3, and the water column 7 above the gate discharges water through the gap formed between the secondary water seal 3 and the downstream breast wall 6 until there is no water column 7 above the gate, as Figure 5 shown.

[0031] As Figure 6 shown, when the gate needs to be opened, without the pressure of the water column 7 above the gate, only the frictional resistance generated by the water pressure against the gate, the self-weight of the gate (or a small amount of the pressure of the water column 7 above the gate), and other adverse factors need to be overcome to open the gate. Compared with the opening force of a gate with the action of the water column 7 above the gate or equipped with a gate counterweight, the opening force of the double water seal plane gate is smaller.

[0032] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A double water seal submerged hole type flat gate arrangement structure for water conservancy and hydropower projects, comprising a gate and a concrete breast wall, characterized in that: A water seal is arranged on both sides of the front and rear of the submerged hole flat steel gate of the front panel, the main water seal is located on the front side of the gate, the secondary water seal is located on the rear side of the gate, the main water seal is arranged along the top edge and both sides of the upstream side panel, the secondary water seal is arranged along the top main beam and the rear flange plate of the side beam on the downstream side of the gate, the main water seal and the secondary water seal share a bottom water seal, and the main water seal and the secondary water seal are effectively connected with the bottom water seal; the lintel embedded parts on the upstream breast wall that is dual to the main water seal and the lintel embedded parts on the downstream breast wall that is dual to the secondary water seal are arranged at unequal heights, the lintel embedded parts of the upstream breast wall are relatively low, and the lintel embedded parts of the downstream breast wall are relatively high, so that the main water seal seals water when the gate blocks water, and does not seal water during the gate opening and closing process, and the secondary water seal seals water during the gate opening and closing process, and does not seal water when the gate blocks water.

2. The double water seal submerged plane gate arrangement structure for water conservancy and hydropower projects according to claim 1 is characterized in that: The main water seal and the auxiliary water seal have the same water blocking direction, and the water blocking direction is from upstream to downstream.

3. The double water seal submerged hole type plane gate arrangement structure for water conservancy and hydropower engineering according to claim 1 is characterized in that: The upper and lower ends of the door lintel embedded part of the downstream breast wall are both provided with smooth chamfers to facilitate the passage of the secondary water seal under extrusion.

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