A new type of water seal pattern for hydraulic gate

Abstract

The utility model discloses a novel hydraulic gate water seal type, including water seal, water seal bottom portion is fixedly connected with angle steel, the water seal includes sealing main part, the sealing main part top is provided with the arc surface sealing surface low pressure side, the plane sealing surface high low pressure side connection plane and the sealing surface high pressure side of downward inclination in proper order, the angle between the inclined plane of sealing surface high pressure side and horizontal surface is greater than the angle between the tangent of any position circular arc of sealing surface low pressure side and horizontal surface, the transition part is still provided with the sealing main part side, and the application provides a novel hydraulic gate water seal type that can improve water seal sealing performance, improve the excessive wear condition of water seal simultaneously, and can realize in situ interchange on the basis of the present use opening and closing machine capacity condition, present use installation condition.

Description

Technical Field

[0001] This utility model belongs to the field of rubber and plastic sealing technology for hydraulic gates, and relates to a new type of water seal for hydraulic gates. Background Technology

[0002] Gates are an important component of hydraulic metal structures, and their safe and stable operation is crucial to the normal operation of the entire hydropower project. The water seal fills the gap between the gate and the gate slot, blocking water and limiting the flow of water. It is extremely important for the stability of hydraulic structures, regular maintenance of structures, and emergency repairs for accidents upstream and downstream. According to standards such as NB / T35086-2016, HG / T 3096-2011, and GB / T 10706-1989, the typical structure for top and side water seals of planar and arc-shaped gates is the P-shaped water seal, which can be further subdivided into round-headed and square-headed P-shaped water seals. Based on a survey of the application of water seals in hydraulic gates of several large-scale water conservancy projects in China, the currently used standard P-shaped water seal structure has the following problems: ① The water seal is severely deformed, the sealing performance is reduced, and leakage occurs frequently. The actual pre-compression amount is much greater than the compression amount in the overall design drawings of the gate water seal; ② The wear is severe during frequent gate operation, and increasing the pre-compression amount exacerbates this phenomenon; ③ Increasing the pre-compression amount will also increase the force required for opening and closing, and the workload of the current hoist will also increase significantly.

[0003] Some water seal manufacturers have modified the sealing body of the traditional P-type water seal by setting the sealing surface to elliptical arcs, rhombuses, or tentacle shapes. While this can solve some of the aforementioned problems to a certain extent, it cannot reduce the interaction force between the water seal and the waterstop panel while improving the sealing performance. Therefore, a new type of water seal for hydraulic gates is proposed that can simultaneously improve the sealing performance of the water seal and alleviate excessive wear, and can be interchanged in situ under existing hoist capacity and installation conditions. Utility Model Content

[0004] This utility model patent aims to address the shortcomings of existing technologies by providing a novel water seal type for hydraulic gates, thereby solving the technical problem that existing technologies cannot reduce the interaction force between the water seal and the water-stop panel while improving sealing performance.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a novel water seal type for hydraulic gates, including a water seal, the bottom of which is fixedly connected to an angle steel, the water seal including a sealing body, the top of which is sequentially provided with an arc-shaped sealing surface low-pressure side, a flat sealing surface high-low pressure side connecting plane and a downwardly inclined sealing surface high-pressure side, the angle between the inclined plane of the high-pressure side of the sealing surface and the horizontal plane is greater than the angle between the tangent of any position of the arc surface of the low-pressure side of the sealing surface and the horizontal plane, and the side of the sealing body is also provided with a transition part.

[0006] Preferably, the water seal is P-shaped, with the bottom of the water seal extending to one side, and a clamping portion is provided on the bottom extension section of the water seal for fixing the water seal to the angle steel.

[0007] Preferably, the clamping part includes a water seal plate, which is located at the top of the water seal extension section and is connected to the angle steel by bolts.

[0008] Preferably, the clamping part further includes a rubber pad, which is located at the bottom of the water seal. The water seal pressure plate can be connected to the rubber pad and the angle steel by bolts passing through the water seal extension section in one go.

[0009] Preferably, the transition portion includes a transition portion slope provided on the low-pressure side of the sealing body near the sealing surface, and a transition portion rounded corner is provided between the bottom of the transition portion slope and the bottom extension of the water seal.

[0010] Preferably, the top surface of the sealing body is provided with a sealing surface.

[0011] Preferably, the side of the water seal can extend in the normal direction to form a straight strip water seal structure.

[0012] Preferably, the straight water seal can be bent to form a corner water seal structure.

[0013] Preferably, the water seal material is rubber.

[0014] Preferably, the sealing surface is a polytetrafluoroethylene layer.

[0015] The beneficial effects of this utility model are as follows: This application provides a new type of water seal for hydraulic gates that can simultaneously improve the water seal sealing performance and reduce excessive wear of the water seal, and can be interchanged in situ based on the existing hoist capacity and installation conditions. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 shows a typical installation example of the water seal type of the novel hydraulic gate of this utility model; Figure 2 shows a typical example of the cross-sectional shape of the novel water seal structure of this utility model; Figure 3 shows a comparison of the contact stress distribution of the sealing surface of the novel water seal structure of this utility model and the square P-shaped water seal. Figure 4 shows a typical example 1 of the water seal sweeping type of the novel hydraulic gate of this utility model; Figure 5 shows a typical example 2 of the water seal sweeping type of the novel hydraulic gate of this utility model; Figure 6 shows a typical example of the interchangeability between the novel hydraulic gate water seal and the square-headed P-shaped water seal of this utility model; 1-Waterstop panel, 2-Water seal, 21-Sealing body, 211-High-pressure side of sealing surface, 212-Connecting plane of high and low pressure sides of sealing surface, 213-Low-pressure side of sealing surface, 214-Sealing surface, 22-Transition part, 221-Beveled surface of transition part, 222-Rounded corner of transition part, 23-Pressure part, 3-Water seal pressure plate, 4-Rubber pad, 5-Angle steel, 6-Straight strip water seal, 61-Cross-section of straight strip water seal, 62-Sweep of cross-section of straight strip water seal 7-Corner water seal, 71-Corner water seal cross-section, 72-Corner water seal cross-section sweep line (normal path), 8-Square head P-shaped water seal, 81-Square head P-shaped water seal sealing body, 82-Square head P-shaped water seal transition part, 83-Square head P-shaped water seal pressing part, α-Angle between the high pressure side inclined plane and the horizontal plane of the sealing body sealing surface, β-Angle between the tangent at any position of the low pressure side arc surface of the sealing body sealing surface and the horizontal plane. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] like Figure 1 As shown, a novel hydraulic gate water seal type includes a water seal 2, the bottom of which is fixedly connected to an angle steel 5. The water seal 2 includes a sealing body 21. The top of the sealing body 21 is sequentially provided with an arc-shaped low-pressure sealing surface 213, a planar high-low pressure sealing surface connecting plane 212, and a downwardly inclined high-pressure sealing surface 211. The angle between the inclined plane of the high-pressure sealing surface 211 and the horizontal plane is greater than the angle between the tangent of any position on the arc surface of the low-pressure sealing surface 213 and the horizontal plane. A transition portion 22 is also provided on the side of the sealing body 21. (See also: [reference needed]) Figure 1 and Figure 2The water seal 2 includes a sealing body 21 and a transition portion 22. The sealing body 21 is in direct contact with the water-stop panel 1. Due to the initially set pre-compression amount, this portion generates a certain contact sealing force with the water-stop panel to prevent upstream water leakage. The sealing body 21 includes a high-pressure side 211, a low-pressure side 213, and a high-low pressure side connecting plane 212. The high-pressure side 211 is an inclined plane at a certain angle to the horizontal plane, the low-pressure side 213 is an arc surface, and the high-low pressure side connecting plane 212 is a plane with both ends intersecting the inclined plane of the high-pressure side 211 and tangent to the arc surface of the low-pressure side 213. The angle between the inclined plane of the high-pressure side 211 and the horizontal plane is [missing information]. α, the angle between the tangent at any position of the arc surface of the low-pressure side 213 of the sealing surface and the horizontal plane is β, and the included angle α > included angle β in this application; by designing unequal included angles on both sides, on the basis of ensuring the water seal sealing contact force, on the one hand, the required pre-compression amount of the sealing body 21 is reduced (see Figure 3, where the pre-compression amount of the VL-shaped water seal is 8mm and the pre-compression amount of the square P-shaped water seal is 10mm), and on the other hand, a more reasonable contact stress distribution can be provided (see Figure 3), so that the contact surface between the sealing body 21 and the water-stop panel 1 forms a distribution in which the contact stress gradually decreases from the water-facing side (high pressure side) to the back water side (low pressure side), which is more in line with the pressure sealing principle for high contact stress on the high pressure side and low contact stress on the low pressure side. In addition, the reduction in contact length is also conducive to reducing friction and reducing the required opening and closing force. Preferably, the water seal 2 is P-shaped, with the bottom of the water seal extending to one side. A clamping part 23 is provided on the bottom extension of the water seal 2 for fixing the water seal 2 and the angle steel 5. In this application, the clamping part is a conventional technical means used to ensure that the water seal is stably installed on the angle steel 5.

[0020] Preferably, the clamping part 23 includes a water seal pressure plate 3, which is located at the top of the extension section of the water seal 2. The water seal pressure plate 3 is connected to the angle steel 5 by bolts. In this embodiment, the clamping part includes the water seal 2, the angle steel 5, and the water seal pressure plate 3. The water seal pressure plate 3 is placed on the plane of the angle steel 5. The water seal 2 is fixed to the bottom angle steel 5 by bolts through the water seal pressure plate 3, so as to ensure that the water seal does not shift or rotate in the dynamic or static water during the gate operation.

[0021] Preferably, the pressing part 23 further includes a rubber pad 4, which is located at the bottom of the water seal 2. The water seal pressure plate 3 can be connected to the water seal extension section and the rubber pad 4 and the angle steel by bolts. In this embodiment, a rubber pad 4 is added to the bottom of the water seal 2. After the water seal 2 and the rubber pad 4 are connected by bolts on the water seal pressure plate 3, they are fixedly connected to the angle steel 5 to further improve stability and ensure the stability of the water seal 2.

[0022] Preferably, the transition portion 22 includes a transition portion slope 221 disposed on the low-pressure side 213 of the sealing body 21 near the sealing surface, and a transition portion rounded corner 222 is provided between the bottom of the slope 221 and the bottom extension of the water seal 2; in this embodiment, the transition portion 22 includes the transition portion slope 221 and the transition portion rounded corner 222, which improves the vertical transition of the traditional P-shaped water seal to a slope transition, and improves the situation where the rounded corner of the water seal transition portion is squeezed inward and folded under the action of large external forces such as pre-compression and water pressure.

[0023] Preferably, the top surface of the sealing body 21 is provided with a sealing surface, which is used to directly contact the water-stop panel, thus adding a sealing surface further improves the sealing efficiency.

[0024] Preferably, the side of the water seal 2 can extend in the normal direction to form a straight water seal 6 structure. This embodiment also includes a fixed cross-sectional shape and a variable sweeping shape. Referring to Figure 4, it is one embodiment of the new structure water seal 2. Its whole is a straight water seal 6, including a straight water seal cross-section 61 and a straight water seal cross-section sweeping line (normal path) 62. The straight water seal cross-section sweeping line 62 is the normal direction of the straight water seal cross-section 61, and the straight water seal cross-section sweeping line 62 is a straight line, that is, the normal direction of the straight water seal cross-section 61 is always unchanged. Preferably, the straight water seal 6 can be bent to form a corner water seal structure 7, as shown in this embodiment. Figure 5 Another embodiment of the novel structural water seal 2 is a corner water seal 7, which includes a corner water seal cross-section 71 and a corner water seal cross-section sweep line (normal path) 72. The corner water seal cross-section sweep line 72 consists of two straight edges with rounded corner transitions. That is, the normal direction of the corner water seal cross-section 61 changes sequentially along the direction of straight line → rounded corner arc tangent → straight line. Only two typical embodiments are listed above. The sweep line (i.e., the normal direction of the water seal cross-section) of the novel structural water seal 2 can be any curved path, but the outer contour size of the cross-section must be considered to avoid self-intersection.

[0025] Preferably, the water seal 2 is made of rubber. In this embodiment, the water seal 2 is made of pure rubber, or it can be made of rubber with an inner layer reinforced with fabric, rubber-plastic composite material, or other rubber-plastic materials. Preferably, the sealing surface is a polytetrafluoroethylene layer.

[0026] The specific implementation of this application is as follows: The main improvement of this application's novel hydraulic gate water seal type lies in the modification of the traditional P-shaped water seal structure. The traditional P-shaped water seal is modified into a VL-shaped sealing surface. In this VL-shaped sealing surface, the high-pressure side is an inclined plane at a certain angle to the horizontal plane, and the low-pressure side is an arc surface. The high and low pressure sides are connected by a horizontal plane. The angle between the inclined plane on the high-pressure side and the horizontal plane is greater than the angle between the tangent of the arc surface on the low-pressure side at any position and the horizontal plane. The transition part of the cross-section type adopts a sloping transition. The variable sweeping type includes straight sweeping, where the normal direction of the water seal cross-section remains unchanged, and arbitrary curved sweeping, where the normal direction of the water seal cross-section changes arbitrarily (considering the cross-sectional dimensions). The angle steel, rubber pad, and water seal pressure plate involved in this novel hydraulic gate water seal type are interchangeable with any P-shaped water seal of the same (sealing body) specification. In use, the novel water seal 2 described in this application is fixed to the angle steel 5 via the pressing part 23.

[0027] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A novel water seal type for hydraulic gates, characterized in that, The water seal (2) is fixedly connected to the bottom of the water seal (2) with the angle steel (5). The water seal (2) includes a sealing body (21). The top of the sealing body (21) is provided with an arc-shaped sealing surface low-pressure side (213), a plane sealing surface high-low pressure side connecting plane (212) and a downwardly inclined sealing surface high-pressure side (211). The angle between the inclined plane of the high-pressure side (211) and the horizontal plane is greater than the angle between the tangent of any position of the arc surface of the low-pressure side (213) and the horizontal plane. The side of the sealing body (21) is also provided with a transition part (22).

2. The novel hydraulic gate water seal type according to claim 1, characterized in that: The water seal (2) is P-shaped, and the bottom of the water seal extends to one side. A pressing part (23) is provided on the bottom extension section of the water seal (2) to fix the water seal (2) and the angle steel (5).

3. The novel hydraulic gate water seal type according to claim 2, characterized in that: The pressing part (23) includes a water seal plate (3), which is located at the top of the extension of the water seal (2) and is connected to the angle steel (5) by bolts.

4. The novel hydraulic gate water seal type according to claim 3, characterized in that: The pressing part (23) also includes a rubber pad (4), which is located at the bottom of the water seal (2). The water seal pressure plate (3) can be connected to the angle steel by bolts through the water seal extension section and the rubber pad (4) in sequence.

5. A novel hydraulic gate water seal type according to claim 4, characterized in that: The transition portion (22) includes a transition portion slope (221) provided on the low-pressure side (213) of the sealing body (21) near the sealing surface, and a transition portion rounded corner (222) is provided between the bottom of the transition portion slope (221) and the bottom extension of the water seal (2).

6. The novel hydraulic gate water seal type according to claim 1, characterized in that: The top surface of the sealing body (21) is provided with a sealing surface.

7. A novel hydraulic gate water seal type according to claim 6, characterized in that: The side of the water seal (2) can extend in the normal direction to form a straight water seal (6) structure.

8. A novel hydraulic gate water seal type according to claim 7, characterized in that: The straight water seal (6) can be bent to form a corner water seal structure (7).

9. A novel water seal type for hydraulic gates according to claim 6, characterized in that: The sealing surface is a polytetrafluoroethylene layer (214).

10. A novel hydraulic gate water seal type according to claim 1, characterized in that: The water seal (2) is made of rubber.

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