A pipe sealing device for a natural gas pipeline

Abstract

The utility model relates to natural gas pipeline technical field provides a kind of pipeline sealing device for natural gas pipeline, including first pipeline and second pipeline;Sealing element is set between the first pipeline and second pipeline, and the relative movement between the first pipeline and second pipeline can be limited;Fixing member is installed in the end of the sealing element, and another end is riveted connection with the outside of the first pipeline and second pipeline. The utility model realizes the double protection of efficient sealing and firm fixation of device through the synergies of sealing element and fixing member, completely reduces medium leakage risk, improves the long-term operation reliability of device, also considers the convenience of device installation and maintenance, and guarantees the safe and stable operation of natural gas pipeline in all directions.

Description

Technical Field

[0001] This utility model relates to the field of natural gas pipeline technology, and in particular to a pipeline sealing device for natural gas pipelines. Background Technology

[0002] In natural gas transmission systems, the sealing performance and structural stability of pipeline connections are directly related to the safety and reliability of the transmission process. Therefore, pipeline sealing devices are a key component of natural gas transmission networks.

[0003] However, existing technologies, such as Chinese Publication No. CN221374837U, disclose a pipeline sealing device for natural gas pipelines, including a sealing mechanism and an installation mechanism. The sealing mechanism includes a first pipeline, one end of which is connected to a second pipeline. A lower fixing ring and an upper fixing ring are fitted at the connection between the first pipeline and the second pipeline. The installation mechanism includes a connecting seat and an installation plate. The connecting seat is located at the bottom of the front side of the upper fixing ring, and the installation plate is located at the top of the front side of the lower fixing ring. A transmission groove is opened at the top of the installation plate, and movable seats are slidably connected to both sides inside the transmission groove. A locking block is connected to the top of the movable seat. This device uses the cooperation of a turntable and a two-way screw to disengage the two locking blocks from the locking groove, thereby separating the connecting seat from the installation plate. Through the cooperation of the upper and lower fixing rings, the sealing device can be easily removed, making it convenient for workers to replace the sealing rings.

[0004] However, during use, it can be observed that this device uses a slot inside the connecting seat to engage with a block at the top of the movable seat on the mounting plate to form a fixed support point, thereby locking the upper and lower fixed rings at the pipeline connection. However, during actual natural gas transportation, the pipeline experiences continuous vibration due to the characteristics of the transported medium. This vibration is transmitted to the pipeline body, causing slight but continuous shaking. Under this long-term vibration environment, the mating parts of the block and slot in the sealing device are continuously subjected to mutual friction and impact. Over time, the surface of the block gradually wears down, and the inner wall of the slot also suffers wear due to repeated contact. This leads to a gradual increase in the gap between the block and the slot. When the gap increases to a certain extent, the originally tight engagement is disrupted, the fixing effect of the connecting seat and the mounting plate significantly decreases, and loosening of the upper and lower fixed rings easily occurs, affecting the overall structural stability of the sealing device. Utility Model Content

[0005] The purpose of this invention is to solve the problem that existing technologies have a single fixing method and limited reliability.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a pipeline sealing device for natural gas pipelines, comprising a first pipeline and a second pipeline; a sealing element disposed between the first pipeline and the second pipeline, which can restrict the relative movement between the first pipeline and the second pipeline; and a fixing element installed at one end of the sealing element, with the other end riveted to the outside of the first pipeline and the second pipeline.

[0007] The technical effect of adopting the above-mentioned further solution is that the first pipe and the second pipe are stably connected by the sealing element, so as to achieve the initial sealing of the first pipe and the second pipe. At the same time, the fixing element further fixes the sealing element, the first pipe and the second pipe, thereby improving the sealing performance of the device.

[0008] In a preferred embodiment, the sealing element includes: two fixed sleeves symmetrically covering the outside of the first and second pipes; multiple limiting blocks uniformly welded to the outside of the first and second pipes; and limiting grooves formed inside the two fixed sleeves; wherein the limiting blocks and the limiting grooves can engage with each other, and a sealing strip is adhered to the inner wall of the limiting groove.

[0009] The technical effect of adopting the above-mentioned further solution is that, through the mutual engagement of the limiting block and the limiting groove, combined with the synergistic effect of the sealing strip, when connecting the first pipe and the second pipe, it is only necessary to place two fixing sleeves between the first pipe and the second pipe, and engage the limiting groove inside them with the limiting block, thus providing a foundation for the next sealing structure.

[0010] In a preferred embodiment, the sealing element further includes: two locking teeth, which are welded to the outside of the first pipe and the second pipe respectively; and two fixing teeth, which are disposed at both ends of the two fixing sleeves; wherein the locking teeth and the fixing teeth engage with each other.

[0011] The technical effect of adopting the above-mentioned further solution is that when the two fixed sleeves are fixed to the outside of the first pipe and the second pipe by the limiting block and the limiting groove, the fixed sleeves are further reinforced to the outside of the first pipe and the second pipe by the mutual engagement of the locking teeth and the fixing teeth. At the same time, the mutual engagement of the locking teeth and the fixing teeth can increase the contact area between the fixed sleeves and the first pipe and the second pipe, and improve the sealing and fixing effect.

[0012] In a preferred embodiment, the sealing element further includes a nylon ring disposed on the outside of the two retaining teeth; wherein the nylon ring is uniformly wrapped around and covers the outer surface of the retaining teeth.

[0013] The technical effect of adopting the above-mentioned further solution is that when the two fixed sleeves further improve the locking effect through the locking action of the locking teeth and the fixed teeth, the two fixed sleeves can be rotated together, so that the fixed teeth set inside them cut the nylon ring on the locking teeth, fill the gap between the locking teeth and the fixed teeth, block the medium leakage channel, which not only enhances the anti-loosening ability, but also maintains the stability of the sealing structure.

[0014] In a preferred embodiment, the sealing element further includes: eight connecting blocks, which are evenly welded to the four corners of the opposite faces of the two fixed sleeves; four connecting bolts, which are movably connected between the two oppositely arranged connecting blocks; and anti-loosening nuts, which are connected to the bottom of the connecting bolts; wherein the connecting bolts and the connecting blocks are connected by threads.

[0015] The technical effect of adopting the above-mentioned further solution is that after the two fixed sleeves are stably set outside the first pipe and the second pipe, by tightening the connecting bolts, combined with the anti-loosening effect of the anti-loosening nut, the two fixed sleeves can be stably connected by the connecting block, further squeezing the gap between the two fixed sleeves and the first pipe and the second pipe, and improving the sealing effect.

[0016] In a preferred embodiment, the sealing element further includes: a sealing groove formed in the middle of the two fixed sleeves; and a sealing clip engaged in the sealing groove; wherein the two sides of the sealing clip are abutting against the end faces of the first pipe and the second pipe.

[0017] The technical effect of adopting the above-mentioned further solution is that by setting a sealing clip, the gap at the connection between the first pipe and the second pipe can be filled.

[0018] In a preferred embodiment, the fastener includes: a first fixing block, rotatably mounted on the ends of the two fixing sleeves; and a second fixing block, welded to the outside of the first pipe and the second pipe; wherein the first fixing block and the second fixing block are symmetrically arranged.

[0019] The technical effect of adopting the above-mentioned further solution is to provide an installation foundation for subsequent fixed connections.

[0020] In a preferred embodiment, the fixing component further includes: multiple positioning holes evenly distributed on the first fixing block and the second fixing block; and positioning bolts movably installed in the positioning holes; wherein the positioning bolts are threadedly connected to the positioning holes.

[0021] The technical effect of adopting the above-mentioned further solution is that after the two fixed sleeves are stably fixed to the outside of the first pipe and the second pipe, the first fixed block is rotated by means of the rotational connection between the first fixed block and the fixed sleeve until the positioning holes on the first fixed block and the second fixed block correspond one by one. Then, the two are fixedly connected by means of the positioning holes, which further prevents the first pipe and the second pipe from loosening and separating.

[0022] Compared with the prior art, the advantages and positive effects of this utility model are as follows: This invention overcomes the limitations of traditional single-method fixing by utilizing the synergistic effect of sealing and fixing components. Firstly, at the sealing component level, the engagement of the limiting block and the limiting groove achieves initial positioning and fixing, while the meshing of the locking teeth and fixing teeth further enhances the connection stability between the sleeve and the pipe, avoiding the limitations of simple meshing or meshing. Secondly, the threaded connection between the connecting bolts and the connecting blocks, combined with anti-loosening nuts, reinforces the sleeve splicing dimension, preventing sleeve separation. Finally, at the fixing component level, the bolted connection between the first fixing block and the second fixing block rigidly links the sealing component and the pipe, significantly improving overall fixing reliability.

[0023] This invention enhances the synergistic reliability of sealing and fixing in a device through the combined action of sealing and fixing components, thus solving the problem of insufficient long-term operational stability. On one hand, the design of the sealing component, including nylon ring cutting and filling, sealing strip fitting, and sealing clip gap filling, achieves efficient sealing while also providing auxiliary support for the fixing structure. On the other hand, the reinforcement effect of the fixing components directly protects the sealing structure; the rigid connection between the first and second fixing blocks prevents pipe displacement from causing misalignment of the sealing components and avoids an increase in the sealing gap. This effectively solves the problem of disconnection between fixing and sealing in existing technologies. Even if the sealing component experiences slight wear during long-term operation, the fixing structure can still maintain its positional stability, ensuring that the sealing effect does not suddenly decrease and significantly improving the long-term operational reliability of the device. Attached Figure Description

[0024] Figure 1 A three-dimensional structural diagram of a pipeline sealing device for natural gas pipelines provided by this utility model; Figure 2 A schematic diagram of the internal structure of a pipeline sealing device for natural gas pipelines provided by this utility model; Figure 3 An enlarged structural schematic diagram of the sealing element of a pipeline sealing device for natural gas pipelines provided by this utility model; Figure 4 An enlarged schematic diagram of the internal structure of the sealing element of a pipeline sealing device for natural gas pipelines provided by this utility model; Figure 5This is a partially enlarged structural diagram of the sealing element of a pipeline sealing device for natural gas pipelines provided by this utility model.

[0025] Legend: 1. First pipe; 2. Second pipe; 3. Sealing element; 301. Limiting block; 302. Clamping tooth; 303. Nylon ring; 304. Fixing sleeve; 305. Limiting groove; 306. Fixing tooth; 307. Connecting block; 308. Connecting bolt; 309. Anti-loosening nut; 310. Sealing groove; 311. Sealing clip; 4. Fixing element; 401. First fixing block; 402. Second fixing block; 403. Positioning hole; 404. Positioning bolt. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0027] Please see Figures 1-5 This embodiment provides a pipeline sealing device for natural gas pipelines with stable sealing effect, and its specific concept is as follows: A pipeline sealing device for natural gas pipelines includes a first pipeline 1 and a second pipeline 2, and the pipeline sealing device for natural gas pipelines further includes a sealing element 3.

[0028] At the connection between the first pipe 1 and the second pipe 2, the sealing element 3 achieves initial sealing and fixation through the coordinated action of multiple components.

[0029] As examples, in this embodiment, the seal 3 includes: a limiting block 301, a locking tooth 302, a nylon ring 303, a fixing sleeve 304, a limiting groove 305, a fixing tooth 306, a connecting block 307, a connecting bolt 308, an anti-loosening nut 309, a sealing groove 310, and a sealing clip 311.

[0030] The fixing sleeve 304 is configured as two symmetrical structures, which cover the connection from the outside of the first pipe 1 and the second pipe 2 respectively.

[0031] Meanwhile, multiple limiting blocks 301 are uniformly welded to the outside of the first pipe 1 and the second pipe 2.

[0032] Correspondingly, the interior of the two fixed sleeves 304 is provided with a limiting slot 305 that is adapted to the limiting block 301. During installation, the limiting block 301 is precisely embedded into the limiting slot 305.

[0033] It should be noted that a sealing strip is also adhered to the inner wall of the limiting groove 305. This connection method not only provides a basic framework for the subsequent sealing structure, but also preliminarily blocks the leakage path of the medium in the pipeline through the sealing strip.

[0034] In addition, to further improve the connection stability between the fixed sleeve 304 and the pipeline, locking teeth 302 are welded to the outside of the first pipeline 1 and the second pipeline 2 respectively.

[0035] Meanwhile, fixing teeth 306 are provided at both ends of the two fixing sleeves 304.

[0036] It should be noted that after the fixed sleeve 304 is initially positioned by the limiting block 301 and the limiting groove 305, the locking teeth 302 and the fixing teeth 306 engage with each other. This connection method enhances the fixing strength of the fixed sleeve 304 outside the pipe and prevents the fixed sleeve 304 from shifting. On the other hand, the engagement of the locking teeth 302 and the fixing teeth 306 increases the contact area between the fixed sleeve 304 and the first pipe 1 and the second pipe 2, thus significantly improving the sealing and fixing effect.

[0037] In addition, nylon rings 303 are evenly wrapped around the outer surface of the two teeth 302.

[0038] It should be noted that when the fixed sleeve 304 engages with the fixed tooth 306 via the retaining tooth 302, the two fixed sleeves 304 rotate synchronously, causing the fixed tooth 306 inside the fixed sleeve 304 to cut the nylon ring 303 on the outer surface of the retaining tooth 302. The cut nylon ring 303 debris fills the gap between the retaining tooth 302 and the fixed tooth 306, effectively blocking the leakage channels that the medium may form through these gaps. This not only enhances the anti-loosening ability of the entire sealing structure but also maintains the long-term stability of the sealing state.

[0039] To achieve a stable connection between the two fixed sleeves 304, connecting blocks 307 are welded to the four corners of the opposite faces of the two fixed sleeves 304.

[0040] It should be noted that there is one connecting block 307 at each of the four corners of each fixed sleeve 304, for a total of eight connecting blocks 307.

[0041] In addition, a connecting bolt 308 is movably connected between two oppositely positioned connecting blocks 307.

[0042] It should be noted that the connecting bolt 308 and the connecting block 307 are tightly connected by threads.

[0043] Meanwhile, a locking nut 309 is attached to the bottom of the connecting bolt 308.

[0044] It should be noted that after the two fixed sleeves 304 are initially fixed outside the pipe, the connecting bolts 308 are tightened, and the anti-loosening nut 309 prevents the bolts from loosening. The two fixed sleeves 304 are then firmly connected by the connecting block 307. During this process, the two fixed sleeves 304 will further compress the gap between the first pipe 1 and the second pipe 2, resulting in a better sealing effect.

[0045] In addition, a sealing groove 310 is provided in the middle of the two fixed sleeves 304, and a sealing clip 311 is engaged in the sealing groove 310.

[0046] It should be noted that the two sides of the sealing clip 311 abut against the end faces of the first pipe 1 and the second pipe 2 respectively. The sealing clip 311 can accurately fill the gap at the connection between the first pipe 1 and the second pipe 2, further enhancing the sealing performance.

[0047] In this embodiment, the sealing element 3 is the core. The limiting block 301 and the limiting groove 305 are engaged with the sealing strip to initially block leakage. The locking teeth 302 and the fixing teeth 306 bite to increase the contact area. The fixing teeth 306 cut the nylon ring 303 to fill the gap. The connecting bolt 308 and the connecting block 307 cooperate with the anti-loosening nut 309 to squeeze the gap. Then, the sealing clip 311 fills the gap at the end face of the pipe, thus realizing the initial sealing and fixing of the pipe, laying the foundation for the subsequent structure. Example

[0048] like Figures 1-5 As shown in Example 1, this example provides a pipeline sealing device for natural gas pipelines that can further improve the sealing effect. The specific idea is as follows: The pipeline sealing device for the natural gas pipeline also includes: fastener 4 The fixing member 4 is installed at the end of the sealing member 3 to further fix the sealing member 3 to the first pipe 1 and the second pipe 2.

[0049] As some examples, in this embodiment, the fastener 4 includes: a first fixing block 401, a second fixing block 402, a positioning hole 403, and a positioning bolt 404.

[0050] The first fixing block 401 is rotatably installed at the ends of both fixing sleeves 304.

[0051] It should be noted that the first fixing block 401 can be rotated and adjusted around the end of the fixing sleeve 304.

[0052] Meanwhile, a second fixing block 402 is welded to the outside of the first pipe 1 and the second pipe 2.

[0053] It should be noted that the first fixing block 401 and the second fixing block 402 are symmetrically distributed. This installation method provides a stable installation foundation for the subsequent connection of the fixing component 4 with the pipe and the sealing component 3, ensuring that the subsequent fixing operation can be carried out accurately.

[0054] In addition, in order to achieve a fixed connection between the first fixing block 401 and the second fixing block 402, a plurality of positioning holes 403 are evenly distributed on both the first fixing block 401 and the second fixing block 402.

[0055] The positioning bolt 404 is movably installed in the positioning hole 403.

[0056] It should be noted that the positioning bolt 404 is connected to the positioning hole 403 by threads.

[0057] In this embodiment, after the fixing sleeve 304 of the sealing element 3 is stably installed outside the first pipe 1 and the second pipe 2, the first fixing block 401 is rotated using the rotational connection characteristic between the first fixing block 401 and the fixing sleeve 304 until the positioning hole 403 on the first fixing block 401 corresponds one-to-one with the positioning hole 403 on the second fixing block 402. At this time, the positioning bolt 404 is inserted into the corresponding positioning hole 403 and tightened. The tightening force of the threaded connection firmly fixes the first fixing block 401 and the second fixing block 402. This connection method not only tightly connects the fixing sleeve 304 with the first pipe 1 and the second pipe 2, further enhancing the structural stability of the entire device, but also effectively prevents the first pipe 1 and the second pipe 2 from loosening and detaching during use, providing a reliable fixing guarantee for the long-term stable operation of the pipelines.

[0058] Working Principle: This device is a pipeline sealing device for natural gas pipelines. In use, first connect the first pipeline 1 and the second pipeline 2 to the preset position. Take two fixing sleeves 304, align the sealing clips 311 with the sealing grooves 310 in the middle of the fixing sleeves 304, and install them. Then, align the internal limiting grooves 305 with the multiple limiting blocks 301 welded to the outside of the pipeline. Slowly push the fixing sleeves 304 so that the limiting blocks 301 are fully embedded in the limiting grooves 305. At this time, the sealing strip on the inner wall of the groove adheres to the outer wall of the pipeline, completing the initial positioning. Next, check the fixing teeth 306 at both ends of the fixing sleeves 304 to ensure they are aligned with the locking teeth 302 on the outside of the pipeline. Gently tap the fixing sleeves 304 to make the fixing teeth 306 and locking teeth 302 mesh tightly, while the nylon rings 303 wrapped around the outside of the locking teeth 302 adhere to the fixing teeth 306. Then, the two fixed sleeves 304 are rotated synchronously, and the fixed teeth 306 are used to cut the nylon ring 303, so that the debris fills the gap between the two.

[0059] Then, take four connecting bolts 308 and pass them through the connecting blocks 307 welded to the four corners of the opposite sides of the two fixing sleeves 304. Tighten the anti-loosening nuts 309 on the bottom of the connecting bolts 308 and tighten the bolts clockwise with a wrench until there is no obvious gap between the fixing sleeve 304 and the outer wall of the pipe, thus completing the installation of the sealing element 3.

[0060] Next, install the fastener 4: Rotate the first fixing block 401 at the end of the fixing sleeve 304 and observe the positioning hole 403 on its surface. When it is completely aligned with the positioning hole 403 on the second fixing block 402 welded to the outside of the pipe, stop rotating. Take the positioning bolt 404 and insert it into the aligned positioning hole 403. Tighten the bolt clockwise with a wrench to ensure that the first fixing block 401 and the second fixing block 402 are tightly fitted without any signs of loosening. At this point, the entire device installation operation is complete.

[0061] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0062] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A pipeline sealing device for natural gas pipelines, comprising a first pipeline (1) and a second pipeline (2), characterized in that, The pipeline sealing device for the natural gas pipeline also includes: A seal (3) is disposed between the first pipe (1) and the second pipe (2) to restrict relative movement between the first pipe (1) and the second pipe (2); The fastener (4) is installed at one end of the seal (3), and the other end is riveted to the outside of the first pipe (1) and the second pipe (2).

2. The pipeline sealing device for natural gas pipelines according to claim 1, characterized in that, The seal (3) includes: Two fixed sleeves (304) are provided and are symmetrically arranged to cover the outside of the first pipe (1) and the second pipe (2); Multiple limit blocks (301) are provided and are evenly welded to the outside of the first pipe (1) and the second pipe (2); The limiting slot (305) is formed inside the two fixing sleeves (304); The limiting block (301) and the limiting groove (305) can engage with each other, and a sealing strip is attached to the inner wall of the limiting groove (305).

3. The pipeline sealing device for natural gas pipelines according to claim 2, characterized in that, The seal (3) also includes: Two locking teeth (302) are provided, which are welded to the outside of the first pipe (1) and the second pipe (2) respectively; Fixed teeth (306) are disposed at both ends of the two fixed sleeves (304); The locking teeth (302) and the fixing teeth (306) engage with each other.

4. The pipeline sealing device for natural gas pipelines according to claim 3, characterized in that, The seal (3) also includes: A nylon ring (303) is disposed outside the two said retaining teeth (302); The nylon ring (303) is uniformly wrapped around the outer surface of the tooth (302).

5. The pipeline sealing device for natural gas pipelines according to claim 4, characterized in that, The seal (3) also includes: Eight connecting blocks (307) are provided and are evenly welded to the four corners of the opposite faces of the two fixed sleeves (304); Four connecting bolts (308) are provided, which are movably connected between two oppositely arranged connecting blocks (307); A lock nut (309) is attached to the bottom of the connecting bolt (308); The connecting bolt (308) and the connecting block (307) are connected by threads.

6. The pipeline sealing device for natural gas pipelines according to claim 5, characterized in that, The seal (3) also includes: A sealing groove (310) is formed in the middle of the two fixed sleeves (304); A sealing clip (311) is fitted into the sealing groove (310); The sealing clip (311) is disposed on both sides abutting against the end faces of the first pipe (1) and the second pipe (2).

7. The pipeline sealing device for natural gas pipelines according to claim 2, characterized in that, The fastener (4) includes: The first fixing block (401) is rotatably mounted on the ends of the two fixing sleeves (304); The second fixing block (402) is welded to the outside of the first pipe (1) and the second pipe (2); The first fixing block (401) and the second fixing block (402) are symmetrically arranged.

8. The pipeline sealing device for natural gas pipelines according to claim 7, characterized in that, The fastener (4) also includes: Multiple positioning holes (403) are provided and are evenly distributed on the first fixing block (401) and the second fixing block (402); The positioning bolt (404) is movably installed in the positioning hole (403); The positioning bolt (404) and the positioning hole (403) are connected by threads.

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