Pipeline sealing device for water conservancy and hydropower engineering

Abstract

The utility model provides a pipeline sealing device for water conservancy and hydropower engineering, which comprises two sections of pipelines which abut against each other, flange plates are arranged at the end parts of the pipelines, an end sealing ring is arranged between the two flange plates, and an upper connecting sleeve and a lower connecting sleeve are sleeved on the outer sides of the flange plates; one end of the upper connecting sleeve is hinged to one end of the lower connecting sleeve, the other end of the upper connecting sleeve is connected with the other end of the lower connecting sleeve through a detachable connecting mechanism, and locking grooves are formed in the upper connecting sleeve and the lower connecting sleeve. The sum of the thickness of the two flange plates and the original thickness of the end sealing ring is not smaller than the internal width of the locking groove. The sealing device is convenient to install, the fastening force between the pipelines is consistent, and the sealing tightness is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of water conservancy and hydropower engineering technology, and specifically relates to a pipeline sealing device for water conservancy and hydropower engineering. Background Technology

[0002] During water conservancy and hydropower construction, it is necessary to seal and fix two sections of pipeline together. Flanges are installed at the ends of the pipelines, and during construction, the flanges between the two sections of pipeline are assembled and fixed together using bolts and nuts.

[0003] In the prior art, such as the Chinese utility model patent document with authorization announcement number CN222085412U, a quick-connect sealing assembly for leaking pipelines is disclosed. The pipeline end is provided with a connecting platform (flange). During construction, the connecting platforms at the ends of the two pipelines are assembled and fixed by fastening bolts and nuts, and a sealing gasket is placed between the ends of the two pipelines to improve the sealing performance. However, this sealing device requires a cross-shaped tightening method during construction, which is cumbersome and makes it difficult to ensure that the tightening force of each fastening bolt is uniform, which can easily cause leakage during use.

[0004] Therefore, it is necessary to design a pipe sealing device for water conservancy and hydropower projects that is easy to install, has consistent tightening force between pipes, and ensures tight sealing to solve the current technical problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this utility model provides a pipe sealing device for water conservancy and hydropower projects that is easy to install, provides consistent tightening force between pipes, and ensures tight sealing.

[0006] The technical solution of this utility model is as follows: a pipeline sealing device for water conservancy and hydropower projects, comprising two abutting pipelines, with flanges at the ends of the pipelines, and end sealing rings between the two flanges. An upper connecting sleeve and a lower connecting sleeve are fitted on the outer side of the flanges. One end of the upper connecting sleeve is hinged to one end of the lower connecting sleeve, and the other end of the upper connecting sleeve is connected to the other end of the lower connecting sleeve through a detachable connecting mechanism. Both the upper and lower connecting sleeves have locking grooves inside. The sum of the thickness of the two flanges and the original thickness of the end sealing ring is not less than the internal width of the locking groove.

[0007] The detachable connecting mechanism has an upper support at the end of the upper connecting sleeve and a lower support at the end of the lower connecting sleeve. An upper rotating shaft is rotatably mounted on the upper support, and a lower rotating shaft is rotatably mounted on the lower support. A connecting stud is fixedly mounted on one side of the upper rotating shaft along its axial direction. A connecting hole matching the connecting stud is opened on the lower rotating shaft. A boss is fixedly mounted on the bottom of the lower rotating shaft concentrically with the connecting hole. A fixing nut is fitted to the end of the connecting stud.

[0008] The locking groove has an inclined surface at one end near the pipe.

[0009] The outer side of the pipe is fitted with a beveled sealing ring that matches the beveled surface. The cross-section of the beveled sealing ring is an isosceles right triangle.

[0010] The flange has flange holes, and positioning posts corresponding to the flange holes are provided on both sides of the end sealing ring. The positioning posts and the end sealing ring are an integral structure.

[0011] Both the upper and lower connecting sleeves are semi-circular arc-shaped plates that match the outer side of the pipe, and the locking groove is located in the middle of the semi-circular arc-shaped plate.

[0012] The sum of the thickness of the two flanges and the original thickness of the end sealing ring is 5-20% larger than the inner width of the locking groove.

[0013] The beneficial effects of this utility model are:

[0014] (1) In this utility model, after the end sealing ring is installed between the ends of the two pipes, the connecting sleeve and the lower connecting sleeve are fitted on the outside of the flange. Then, the ends of the upper connecting sleeve and the lower connecting sleeve are fixedly connected by a detachable connecting mechanism. The locking groove squeezes the two flanges close together, and the end sealing ring deforms and abuts against the two ends of the pipe, ensuring the tightness of the seal between the ends of the pipe.

[0015] (2) The inner width of the locking groove is consistent, the compression of the end sealing ring is consistent, the end sealing ring is subjected to uniform force, and the fastening force between the pipes is consistent, which further ensures the tightness of the seal.

[0016] (3) During installation, simply align the two pipes, then put the upper and lower connecting sleeves on the outside of the pipes, and connect and fix the ends of the upper and lower connecting sleeves through a detachable connecting mechanism, which is convenient for installation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 .

[0018] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0019] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 2 .

[0020] Figure 4 for Figure 3 Cross-sectional view at point BB.

[0021] Figure 5 for Figure 4 A magnified view of a section at point C. Detailed Implementation

[0022] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are not intended to limit the present invention or its application or use in any way. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete, and to fully express the scope of the present invention to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0023] The terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "comprising" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] like Figures 1 to 5As shown, the pipeline sealing device for a water conservancy and hydropower project includes two abutting pipes 1. Flanges 11 are provided at the ends of the pipes 1, and end sealing rings 5 ​​are provided between the two flanges 11. An upper connecting sleeve 2 and a lower connecting sleeve 3 are fitted onto the outer side of the flanges 11. One end of the upper connecting sleeve 2 is hinged to one end of the lower connecting sleeve 3, and the other end of the upper connecting sleeve 2 is connected to the other end of the lower connecting sleeve 3 via a detachable connecting mechanism 4. Locking grooves 21 are provided inside both the upper connecting sleeve 2 and the lower connecting sleeve 3. The sum of the thickness of the two flanges 11 and the original thickness of the end sealing ring 5 is not less than the internal width of the locking groove 21. In this embodiment, after the end sealing ring 5 is installed between the ends of the two pipes 1, an upper connecting sleeve 2 and a lower connecting sleeve 3 are fitted onto the outer side of the flanges 11. The upper connecting sleeve 2 and the lower connecting sleeve 3 are connected together, and then the ends of the upper connecting sleeve 2 and the lower connecting sleeve 3 are fixedly connected by a detachable connecting mechanism 4. The locking groove 21 squeezes the two flanges 11 closer together, and the end sealing ring 5 deforms and abuts against the two ends of the pipe 1, ensuring the tightness of the seal between the ends of the pipe 1. The inner width of the locking groove 21 is consistent, the compression of the end sealing ring 5 is consistent, the end sealing ring 5 is subjected to uniform force, and the fastening force between the pipes 1 is consistent, further ensuring the tightness of the seal. During installation, simply align the two pipes 1, then put the upper connecting sleeve 2 and the lower connecting sleeve 3 on the outside of the pipe 1, and connect and fix the ends of the upper connecting sleeve 2 and the lower connecting sleeve 3 by the detachable connecting mechanism 4, which is convenient for installation.

[0025] In some embodiments, as a specific implementation of the detachable connecting mechanism 4, the detachable connecting mechanism 4 has an upper support 41 disposed at the end of the upper connecting sleeve 2 and a lower support 42 disposed at the end of the lower connecting sleeve 3. An upper rotating shaft 43 is rotatably disposed on the upper support 41, and a lower rotating shaft 44 is rotatably disposed on the lower support 42. A connecting stud 45 is fixedly disposed on one side of the upper rotating shaft 43 along its axial direction. A connecting hole 441 matching the connecting stud 45 is opened on the lower rotating shaft 44. A boss 442 is fixedly disposed concentrically with the connecting hole 441 at the bottom of the lower rotating shaft 44. The end of the connecting stud 45 is... When the ends of the upper connecting sleeve 2 and the lower connecting sleeve 3 are connected, the end of the connecting bolt 45 passes through the connecting hole 441, and then the fixing nut 46 is installed at the end of the connecting stud 45. The fixing nut 46 is screwed on, and the connecting stud 45 is continuously pulled inside the connecting hole 441 to pull the ends of the upper connecting sleeve 2 and the lower connecting sleeve 3 to abut against each other. Then, a nut can be installed on the end of the connecting stud 45 to lock it. During the process of pulling the ends of the upper connecting sleeve 2 and the lower connecting sleeve 3, the two flanges 11 are gradually embedded into the interior of the locking groove 21 to achieve fixation.

[0026] In some embodiments, a bevel 211 is provided at one end of the locking groove 21 near the pipe. During the process of pulling the ends of the upper connecting sleeve 2 and the lower connecting sleeve 3, the two flanges 11 continuously approach and squeeze the end sealing ring 5 through the sliding guide effect of the bevel 211 until the two flanges 11 are completely embedded in the locking groove 21, thereby achieving the fixation between the two pipes 1.

[0027] In some embodiments, a beveled sealing ring 6 matching the beveled surface 211 is fitted on the outside of the pipe 1. The cross section of the beveled sealing ring 6 is an isosceles right triangle. The two flanges 11 are fully embedded in the locking groove 21. The beveled surface 211 abuts against the beveled sealing ring 6, further improving the tightness of the seal between the two pipes 1.

[0028] In some embodiments, the flange 11 has a flange hole 12, and both sides of the end sealing ring 5 are provided with positioning posts 51 corresponding to the flange hole 12. The positioning posts 51 and the end sealing ring 5 are integral structures. The end sealing ring 5 cooperates with the flange hole 12 through the positioning posts 51 to realize the positioning between the end sealing ring 5 and the flange 11, so as to avoid the end sealing ring 5 from shifting during installation and affecting the installation process, or even affecting the sealing effect.

[0029] In some embodiments, the upper connecting sleeve 2 and the lower connecting sleeve 3 are both semi-circular arc plates that match the outer side of the pipe 1. After the upper connecting sleeve 2 and the lower connecting sleeve 3 are fixedly fitted on the outer side of the two pipes 1, they can limit the two pipes 1 and prevent the pipes 1 from shifting. The locking groove 21 is provided in the middle of the semi-circular arc plate.

[0030] In some embodiments, the sum of the thickness of the two flanges 11 and the original thickness of the end sealing ring 5 is 5 to 20% greater than the inner width of the locking groove 21; preferably, the sum of the thickness of the two flanges 11 and the original thickness of the end sealing ring 5 is 10% greater than the inner width of the locking groove 21.

[0031] The various embodiments of this utility model have now been described in detail. To avoid obscuring the concept of this utility model, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0032] The embodiments described above only illustrate some implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A pipe sealing device for water conservancy and hydropower projects, characterized by: The utility model provides a pipeline joint, which comprises two abutting pipelines, the end of the pipeline is provided with a flange, an end sealing ring is arranged between the two flanges, an upper connecting sleeve and a lower connecting sleeve are sleeved on the outer side of the flange, one end of the upper connecting sleeve is hinged to one end of the lower connecting sleeve, the other end of the upper connecting sleeve is connected to the other end of the lower connecting sleeve through a detachable connecting mechanism, and locking grooves are arranged in the upper connecting sleeve and the lower connecting sleeve; the sum of the thickness of the two flanges and the original thickness of the end sealing ring is not less than the internal width of the locking groove.

2. The hydraulic engineering conduit sealing device according to claim 1, characterized in that: The detachable connecting mechanism comprises an upper support arranged at the end of the upper connecting sleeve and a lower support arranged at the end of the lower connecting sleeve, an upper rotating shaft is rotatably arranged on the upper support, a lower rotating shaft is rotatably arranged on the lower support, a connecting stud is fixedly arranged on one side of the upper rotating shaft along the axial direction of the upper rotating shaft, a connecting hole matched with the connecting stud is formed in the lower rotating shaft, a boss is fixedly arranged at the bottom of the lower rotating shaft and concentric with the connecting hole, and a fixing nut is arranged at the end of the connecting stud.

3. The hydraulic engineering pipeline sealing device according to claim 1, characterized in that: An inclined surface is arranged on one end of the locking groove close to the pipeline.

4. The hydraulic engineering pipeline sealing device according to claim 3, characterized in that: An inclined surface sealing ring matched with the inclined surface is sleeved on the outer side of the pipeline, and the cross section of the inclined surface sealing ring is isosceles right triangle.

5. The hydraulic engineering pipeline sealing device according to claim 1, characterized in that: The flange has a flange hole, positioning columns corresponding to the flange hole are arranged on both sides of the end sealing ring, and the positioning columns and the end sealing ring are an integral structure.

6. The hydraulic engineering conduit sealing device of claim 1, wherein: The upper connecting sleeve and the lower connecting sleeve are semicircular arc plates matched with the outer side of the pipeline, and the locking grooves are arranged in the middle of the semicircular arc plates.

7. The hydraulic engineering pipeline sealing device according to claim 1, characterized in that: The sum of the thickness of the two flanges and the original thickness of the end sealing ring is 5-20% larger than the internal width of the locking groove.

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