Water-stopping mechanism for hydraulic engineering

Abstract

A water conservancy project water stop mechanism. Belong to water conservancy technical field, both sides end face of the main body rubber ring are provided with annular convex rib one, annular convex rib two and annular convex rib three from inside to outside, a plurality of through holes are uniformly arranged on the main body rubber ring along the circumference, the plurality of through holes are located in the region between the same side annular convex rib two and annular convex rib three, the outer wall of the main body rubber ring is fixedly connected with the annular plate through four connecting rods uniformly distributed along the circumference, the annular plate is uniformly provided with four threaded holes along the circumference, each threaded hole is provided with a fastening mechanism, and each fastening mechanism is located between the corresponding two connecting rods. The utility model discloses a synergic design of "double sealing + multiple fastening + water expansion", which can realize reliable sealing in the initial stage for the defects of traditional mechanism, can cope with water flow impact and water pressure fluctuation in long-term use through dynamic adaptation and structure optimization, and effectively improves the water stop effect and stability of water conservancy pipeline connection.

Description

Technical Field

[0001] This utility model belongs to the field of water conservancy engineering technology, specifically a water-stopping mechanism for water conservancy projects. Background Technology

[0002] In water conservancy projects, water-stopping mechanisms are crucial components that ensure the engineering structure does not leak, especially at the connection points of water pipelines, where their sealing performance directly affects the safety of the entire water supply system. In water conservancy projects, water pipes are often rigidly connected using flanges or similar methods, and the sealing of these connections is essential for ensuring smooth water flow.

[0003] However, existing water-stopping mechanisms have significant shortcomings in sealing water pipe connections in water conservancy projects: the sealing structure design of traditional water-stopping mechanisms is unreasonable, specifically manifested in a single sealing layer, relying on only a single contact surface to achieve a seal, which is insufficient to withstand the large water flow impacts in water conservancy projects; furthermore, the tightness of the sealing components with water pipes and flanges is insufficient, maintaining contact only through a static structure. Under long-term water flow impact or water pressure fluctuations, the sealing surface is prone to loosening due to pressure changes, leading to a decrease in the sealing force at the connection and resulting in poor sealing performance. These problems make it difficult for traditional water-stopping mechanisms to form a reliable seal when used with water pipes and flanges to form a rigid connection, seriously affecting the safe operation of the water conveyance system. Summary of the Invention

[0004] To address the problems existing in the background technology, this utility model provides a water-stopping mechanism for water conservancy projects.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a water-stopping mechanism for water conservancy projects, comprising a main rubber ring, an annular plate, two annular protrusions I, two annular protrusions II, two annular protrusions III, four connecting rods, four fastening mechanisms, and multiple through holes. The main rubber ring has three annular protrusions on both sides from the inside to the outside. The two annular protrusions are symmetrically arranged. The two annular protrusions are symmetrically arranged. The two annular protrusions are symmetrically arranged. The main rubber ring has multiple through holes evenly distributed along the circumference. The multiple through holes are all located in the area between the annular protrusions on the same side and the annular protrusions. The outer wall of the main rubber ring is fixedly connected to the annular plate by four connecting rods evenly distributed along the circumference. The annular plate has four threaded holes evenly distributed along the circumference. Each threaded hole is equipped with a fastening mechanism. Each fastening mechanism is located between two corresponding connecting rods.

[0006] Each of the fastening mechanisms includes a threaded rod and an arc-shaped plate; The threaded rod is threadedly connected to the corresponding threaded hole on the annular plate, and the threaded rod is rotatably connected to the arc plate through a bearing. The curvature of the arc plate matches the outer wall of the main rubber ring.

[0007] The two annular protrusions are located on the inner wall of the main rubber ring, and both annular protrusions are made of water-swellable rubber.

[0008] A groove for placing a water pipe is formed between the first and second annular protrusions on the same side. The size of the first groove matches the outer wall of the water pipe to be connected. A groove for placing a flange is formed between the second and third annular protrusions on the same side. One end face of the flange is provided with an annular convex surface that matches the second groove. The annular convex surface is inserted into the second groove.

[0009] Compared with the prior art, the beneficial effects of this utility model are: 1. Double sealing enhances impact resistance: The first seal is formed by the first annular convex rib fitting against the inner wall of the water pipe, and the second annular convex rib, together with the third annular convex rib, is squeezed against the flange to form the second seal. This overcomes the shortcomings of the traditional single-layer sealing. The double structure effectively blocks the water leakage path from the initial stage, significantly improving the resistance to large water flow impacts in water conservancy projects and consolidating the basic sealing performance. 2. Multiple tightening mechanisms enhance the tightness of the fit: The axial preload of the bolts causes the main rubber ring to deform, enhancing the tightness of the fit between each annular protrusion and the water pipe and flange; the fastening mechanism on the annular plate further increases the pressure at each contact point through radial inward pressure, making up for any possible local gaps and forming a secondary reinforcement. This effectively solves the problem of loosening of the fit in traditional static structures under water flow impact, making the sealing effect more stable. 3. Water-swellable, enhancing sealing adaptability: The annular convex ridge is made of water-swellable rubber. When water passes through, it will actively absorb water and expand. By increasing its volume, it further squeezes the inner wall of the water pipe, strengthening the contact pressure of the first sealing surface. When the water pressure fluctuates, it can dynamically compensate for the slight relaxation of the sealing surface caused by pressure changes, improve the mechanism's adaptive sealing ability to water pressure changes, and avoid the decrease in sealing force. 4. Structural fit ensures long-term reliability: Groove 1 precisely matches the side wall of the water pipe, and Groove 2 matches the annular convex surface of the flange. Combined with evenly distributed connecting rods and fastening mechanisms, the force on each component is balanced, reducing sealing failure caused by excessive local stress. This ensures the long-term sealing performance of the pipeline connection under complex working conditions in water conservancy projects, further improving the overall sealing reliability.

[0010] In summary, this utility model, through the synergistic design of "double sealing + multiple fastening + water expansion", can not only achieve reliable sealing in the initial stage to address the shortcomings of traditional mechanisms, but also cope with water flow impact and water pressure fluctuations during long-term use through dynamic adaptation and structural optimization, effectively improving the water-stopping effect and stability of water conservancy engineering pipeline connections. Attached Figure Description

[0011] Figure 1This is a front view of the present invention; Figure 2 This is a schematic diagram of the usage state of this utility model. Detailed Implementation

[0012] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0013] This embodiment describes a water-stopping mechanism for a water conservancy project, including a main rubber ring 1, an annular plate 7, two annular protrusions 1 2, two annular protrusions 2 3, two annular protrusions 3 4, four connecting rods 6, four fastening mechanisms, and multiple through holes 5. The two end faces of the main rubber ring 1 are provided with annular protrusions 1-2, 2-3, and 3-4 from the inside to the outside. The two annular protrusions 1-2 are symmetrically arranged, the two annular protrusions 2-3 are symmetrically arranged, and the two annular protrusions 3-4 are symmetrically arranged. Multiple through holes 5 are evenly distributed along the circumference of the main rubber ring 1. The multiple through holes 5 are all located in the area between the annular protrusions 2-3 and 3-4 on the same side. The outer wall of the main rubber ring 1 is fixedly connected to the annular plate 7 by four connecting rods 6 evenly distributed along the circumference. The annular plate 7 is evenly distributed with four threaded holes along the circumference. Each threaded hole is provided with a fastening mechanism. Each fastening mechanism is located between two corresponding connecting rods 6.

[0014] Each of the fastening mechanisms includes a threaded rod 8 and an arc-shaped plate 9; The threaded rod 8 is threadedly connected to the corresponding threaded hole on the annular plate 7, and the threaded rod 8 is rotatably connected to the arc plate 9 through a bearing. The curvature of the arc plate 9 matches the outer wall of the main rubber ring 1.

[0015] The two annular protrusions 1-2 are located on the inner wall of the main rubber ring 1, and both annular protrusions 2-2 are water-swellable rubber.

[0016] On the same side, the annular protrusion 1 2 and the annular protrusion 2 3 form a groove 1 for placing a water pipe. The size of the groove 1 matches the outer wall of the water pipe to be connected. On the same side, the annular protrusion 2 3 and the annular protrusion 3 4 form a groove 2 for placing a flange 10. One end face of the flange 10 is provided with an annular convex surface that matches the groove 2. The annular convex surface is inserted into the groove 2.

[0017] In operation, this invention first welds corresponding flanges 10 to the water pipes to be connected on both sides and matched with the first groove. Then, the water pipes on both sides are precisely embedded into the first groove formed by the first annular ridge 2 and the second annular ridge 3 on both sides of the main rubber ring 1. At the same time, the flange 10 is embedded into the second groove formed by the second annular ridge 3 and the third annular ridge 4, and the annular convex surface of the flange 10 end face is precisely matched with the second groove, achieving initial positioning. At this time, the first annular ridge 2, as water-swellable rubber, forms a first seal by tightly fitting the inner wall of the water pipe with the elasticity of the rubber. The second annular ridge 3 fits the outer wall of the water pipe and forms a second seal by extruding and deforming the flange 10 with the third annular ridge 4. The double sealing structure changes the defects of the traditional single sealing layer, effectively blocking the water leakage path from the initial stage and significantly improving the resistance to the impact of large water flows. Next, align the holes of the two flanges 10 with the through holes 5 on the main rubber ring (the number of holes in the flanges 10 corresponds to the number of through holes 5). After the bolts 11 pass through the holes of the two flanges 10 and the through holes 5 on the main rubber ring 1, tighten them with nuts to form an axial preload. The axial force of the bolts 11 causes the main rubber ring 1 to deform under the pressure of the two flanges 10, causing each annular ridge to undergo further elastic deformation, enhancing the tightness of the fit between annular ridge 12 and the inner wall of the water pipe, annular ridge 23 and the outer wall of the water pipe, and annular ridge 23 and annular ridge 34 and the end face of the flanges 10, thus achieving a seal through the rubber. To enhance the water-stopping effect, each threaded rod 8 on the annular plate 7 is rotated, pushing the corresponding arc-shaped plate 9 closer to and pressing against the outer wall of the main rubber ring 1. Because the arc of the arc-shaped plate 9 matches the outer wall of the main rubber ring 1 and the four fastening mechanisms are evenly distributed, they can apply uniform radial inward pressure to the main rubber ring 1, causing each annular protrusion to press inward, further increasing the contact pressure with the outer wall of the water pipe and the end face of the flange 10, making up for the possible local gaps in the tightening of the bolts 11, forming a secondary reinforcement, effectively solving the problem of easy loosening of the fit in traditional static structures under the impact of water flow, and making the sealing effect more stable.

[0018] When water passes through the annular ridge 1-2, the rubber will absorb water and expand, further squeezing the inner wall of the water pipe by increasing its volume. This strengthens the sealing pressure of the first sealing surface. When the water pressure fluctuates, it can dynamically compensate for the slight relaxation of the sealing surface caused by pressure changes, avoid the decrease in sealing force, and improve the mechanism's adaptive sealing ability to water pressure changes.

[0019] Ultimately, through the synergistic effect of "initial double sealing + axial bolt tightening + radial secondary reinforcement + water-swelling to enhance sealing", a stable and reliable water-stopping effect is achieved, effectively coping with water flow impact and water pressure fluctuation in water conservancy projects, and ensuring the long-term sealing performance of pipeline connections under complex working conditions.

[0020] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A hydraulic engineering water-stopping mechanism, characterized by: It includes a main rubber ring (1), an annular plate (7), two annular protrusions one (2), two annular protrusions two (3), two annular protrusions three (4), four connecting rods (6), four fastening mechanisms and multiple through holes (5); The main rubber ring (1) has annular protrusions 1 (2), 2 (3) and 3 (4) on both sides from the inside to the outside. The two annular protrusions 1 (2) are symmetrically arranged, the two annular protrusions 2 (3) are symmetrically arranged, and the two annular protrusions 3 (4) are symmetrically arranged. Multiple through holes (5) are evenly distributed along the circumference of the main rubber ring (1). The multiple through holes (5) are all located in the area between the annular protrusions 2 (3) and 3 (4) on the same side. The outer wall of the main rubber ring (1) is fixedly connected to the annular plate (7) by four connecting rods (6) evenly distributed along the circumference. The annular plate (7) has four threaded holes evenly distributed along the circumference. Each threaded hole is provided with a fastening mechanism. Each fastening mechanism is located between the corresponding two connecting rods (6).

2. The water conservancy project sealing mechanism according to claim 1, characterized in that: Each of the fastening mechanisms includes a threaded rod (8) and an arc plate (9); The threaded rod (8) is threadedly connected to the corresponding threaded hole on the annular plate (7), and the threaded rod (8) is rotatably connected to the arc plate (9) through a bearing. The arc of the arc plate (9) matches the outer wall of the main rubber ring (1).

3. The water-stopping mechanism for hydraulic engineering according to claim 1, characterized in that: The two annular protrusions (2) are located on the inner wall of the main rubber ring (1), and both annular protrusions (2) are water-swellable rubber.

4. The water-stopping mechanism for hydraulic engineering according to claim 1, characterized in that: A groove for placing a water pipe is formed between the first annular protrusion (2) and the second annular protrusion (3) on the same side. The size of the first groove matches the outer wall of the water pipe to be connected. A groove for placing a flange (10) is formed between the second annular protrusion (3) and the third annular protrusion (4) on the same side. One end face of the flange (10) is provided with an annular protrusion that matches the second groove. The annular protrusion is inserted into the second groove.

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