A pipeline plugging device for gas engineering

Abstract

The utility model belongs to gas engineering technical field discloses a kind of pipeline plugging devices for gas engineering, including the support assembly for plugging pipeline body end and supporting, further including two clamping components for clamping pipeline body fixation symmetrically installed on support assembly, support assembly middle is provided with the force increasing component for inflating expansion plugging pipeline body to increase friction force.The utility model discloses a kind of pipeline plugging devices for gas engineering, by pressure bowl and sealing ring form first layer plugging, air bag ball inflation forms second layer sealing, sealing boss compacts pipeline end surface and forms third layer plugging, three sealing structures significantly improve the reliability and security of plugging, effectively prevent gas leakage;Air bag ball is inflated and expands, both realize sealing function, and provide additional friction by increasing the contact area with the inner wall of pipeline, effectively share the fixed stress burden borne by clamping component, improve the stability and carrying capacity of overall structure.

Description

Technical Field

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

[0002] Gas pipelines are the lifeline of urban energy supply, and their safety directly affects the lives and property of countless households and the stability of public order. Pipeline sealing, as a key measure to maintain the integrity of the gas system, can effectively block the risk of leakage and prevent serious accidents such as fires and explosions caused by gas diffusion. Especially in older residential areas, where rust and loose connections are long-standing hazards, timely sealing of damaged areas can prevent gas from accumulating in confined spaces, fundamentally eliminating safety hazards. Furthermore, proper sealing operations can extend the service life of pipelines, reduce systemic maintenance costs caused by minor issues, and ensure the continuity and stability of residents' daily gas supply.

[0003] Comparing with Chinese Patent CN222864492U, a gas pipeline sealing device for gas engineering is disclosed, including a fixing ring, a threaded cylinder, and a sealing platform. The fixing ring has multiple threaded holes evenly distributed on its circumferential wall, each threaded hole being threadedly connected to a clamping rod for clamping the gas pipeline. The threaded cylinder is connected to the fixing ring via multiple connecting rods and is coaxial with the fixing ring. The sealing platform is frustum-shaped, with a threaded shaft at its large end. The threaded shaft engages with the threaded cylinder. When the threaded shaft rotates, the sealing platform can move axially along the fixing ring so that its circumferential surface abuts against the inner edge of the gas pipeline opening. The frustum-shaped sealing platform can seal gas pipelines of various sizes without requiring replacement, expanding the product's applicability and improving its adaptability.

[0004] However, the aforementioned patent uses a sealing platform to seal the pipe end face, which only provides a single layer of sealing effect, resulting in poor safety and reliability. Furthermore, the external arc-shaped clamping plate clamps the outer wall of the pipe, limiting the force-bearing area and increasing the fixed force burden, further reducing the safety and reliability of the sealing. Therefore, a new device needs to be designed. Utility Model Content

[0005] The purpose of this invention is to provide a pipeline sealing device for gas engineering to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A gas pipeline sealing device includes a support assembly for sealing and supporting the end of a pipeline body, and two clamping assemblies symmetrically mounted on the support assembly for clamping and fixing the pipeline body. A force-boosting assembly for inflating and expanding to block the pipeline body and increase friction is provided in the middle of the support assembly. The support assembly includes a frame mechanism closed at one end, with a sealing boss in the middle of the closed end, and two support seats symmetrically arranged at the open end. The clamping assembly includes a clamping screw threaded to the middle of the support seats, a handwheel handle at the top of the clamping screw, and an arc-shaped clamping plate at the bottom of the clamping screw. A transition mechanism for easy replacement and rotational connection is provided between the clamping screw and the arc-shaped clamping plate. The force-boosting assembly includes an airbag ball attached to the end face of the sealing boss, with a pressure-bearing bowl at the end of the airbag ball away from the sealing boss, and an air inlet mechanism at the side of the airbag ball away from the pressure-bearing bowl.

[0008] Furthermore: the air intake mechanism includes an air inlet / outlet pipe passing through the sealing boss, and an air inlet / outlet valve is installed on the air inlet / outlet pipe, the air inlet / outlet valve being located on the outside of the frame mechanism.

[0009] Furthermore, the pressure-bearing bowl is attached to the end face of the airbag ball, and a sealing ring is provided on the edge of the pressure-bearing bowl.

[0010] Furthermore, the transition mechanism includes a limiting baffle at the bottom of the clamping screw and a connecting seat on the arc-shaped clamping plate. Two limiting pins are symmetrically installed on the connecting seat, and the limiting pins prevent the limiting baffle from disengaging from the connecting seat.

[0011] Furthermore, the bottom surface of the arc-shaped clamping plate is covered with an anti-slip rubber pad.

[0012] Furthermore: the frame mechanism includes an end cover plate, a support ring is provided on one side of the end cover plate, and a number of connecting ribs are evenly distributed between the end cover plate and the support ring, forming a cylindrical frame shape as a whole.

[0013] Furthermore, the sealing boss is frustoconical in shape, and its bottom surface is attached to the center of the end cover plate.

[0014] Compared with existing technologies, the beneficial effects are:

[0015] The triple sealing structure significantly improves the reliability and safety of the sealing process by forming a first layer of seal with a pressure-bearing bowl and a sealing ring, a second layer of seal with an inflated airbag, and a third layer of seal by pressing a sealing boss against the pipe end face. This effectively prevents gas leakage. The inflated airbag not only provides a seal but also increases the contact area with the pipe wall, providing additional friction and effectively sharing the fixing load on the clamping components, thus improving the overall stability and load-bearing capacity. Symmetrically arranged clamping screws drive the arc-shaped clamping plates, along with anti-slip pads, ensuring reliable clamping and preventing slippage. The limit pins and limit baffles in the transition mechanism ensure stable connection and easy replacement, adapting to different pipe diameters and operating conditions. The combination of pneumatic sealing and mechanical clamping avoids safety hazards from open flames or electrical components, making it suitable for flammable and explosive environments such as gas pipelines. Through the synergistic effect of multiple seals, increased friction, and adjustable clamping, it achieves efficient, reliable, and safe pipe sealing, demonstrating strong practicality and promotional value. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a pipeline sealing device for gas engineering according to the present invention;

[0017] Figure 2 This is a right-side axonometric view of a gas pipeline sealing device for gas engineering as described in this utility model;

[0018] Figure 3 This is a schematic diagram of the support assembly of a pipeline sealing device for gas engineering according to the present invention;

[0019] Figure 4 This is an exploded view of the clamping component of a gas pipeline sealing device for gas engineering as described in this utility model;

[0020] Figure 5 This is a left-side axonometric view of the booster component of a gas pipeline sealing device for gas engineering as described in this utility model;

[0021] Figure 6 This is a right-side axonometric view of the booster component of a gas pipeline sealing device for gas engineering as described in this utility model.

[0022] In the attached drawings, the following are the reference numerals: 1. Support assembly; 2. Clamping assembly; 3. Force-increasing assembly; 4. Pipe body; 101. End cover plate; 102. Support ring; 103. Connecting rib; 104. Support seat; 105. Sealing boss; 201. Clamping screw; 202. Limiting baffle; 203. Handwheel handle; 204. Arc-shaped clamping plate; 205. Anti-slip pad; 206. Connecting seat; 207. Limiting pin; 301. Airbag bulb; 302. Inlet and outlet air pipes; 303. Inlet and outlet air valves; 304. Pressure bowl; 305. Sealing ring. Detailed Implementation

[0023] 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.

[0024] Please see Figures 1-6 A gas pipeline sealing device includes a support assembly 1 for sealing and supporting the end of a pipeline body 4, and two clamping assemblies 2 symmetrically installed on the support assembly 1 for clamping and fixing the pipeline body 4. A force-increasing assembly 3 for inflating and expanding the pipeline body 4 to increase friction is provided in the middle of the support assembly 1.

[0025] In this embodiment: the support assembly 1 includes a frame mechanism with one end closed. A sealing boss 105 is provided in the middle of the closed end of the frame mechanism, and two support seats 104 are symmetrically provided at the open end of the frame mechanism. The frame mechanism includes an end cover plate 101. A support ring 102 is provided on one side of the end cover plate 101. Several connecting ribs 103 are evenly distributed between the end cover plate 101 and the support ring 102, forming a cylindrical frame. The sealing boss 105 is frustoconical, and its bottom surface is attached to the center of the end cover plate 101. Pushing the end cover plate 101 causes the sealing boss 105 to press against the end face of the pipe body 4. The connecting ribs 103 and the support ring 102 surround the outer periphery of the pipe body 4 together. This ensures that the support seat 104 supports the clamping screw 201 to push the arc-shaped clamping plate 204 to clamp the pipe body 4. During operation, the sealing boss 105 presses against the end of the pipe body 4 through the frustoconical shape, forming a third layer of sealing effect.

[0026] In this embodiment: the clamping assembly 2 includes a clamping screw 201 threadedly connected to the support base 104. A handwheel handle 203 is provided at the top of the clamping screw 201, and an arc-shaped clamping plate 204 is provided at the bottom of the clamping screw 201. A transition mechanism for easy replacement and rotational connection is provided between the clamping screw 201 and the arc-shaped clamping plate 204. The transition mechanism includes a limiting baffle 202 at the bottom of the clamping screw 201 and a connecting seat 206 on the arc-shaped clamping plate 204. Two limiting pins 207 are symmetrically installed on the connecting seat 206. 7. The limiting baffle 202 is disengaged from the connecting seat 206; the bottom surface of the arc-shaped clamping plate 204 is covered with an anti-slip pad 205; during installation, the two clamping screws 201 are rotated by the handwheel handle 203, so that the clamping screws 201 rotate under the support of the support seat 104, and the limiting baffle 202 rotates in the connecting seat 206 to push the arc-shaped clamping plate 204 to clamp the pipe body 4 from both sides and fix it, bearing the main fixing force. The anti-slip pad 205 increases the friction and prevents slippage. The limiting pin 207 prevents the limiting baffle 202 from disengaging from the connecting seat 206.

[0027] In this embodiment: the force-enhancing component 3 includes an airbag ball 301 attached to the end face of the sealing boss 105. A pressure-bearing bowl 304 is provided at the end of the airbag ball 301 away from the sealing boss 105, and an air intake mechanism is provided on the side of the airbag ball 301 away from the pressure-bearing bowl 304. The air intake mechanism includes an inlet / outlet pipe 302 passing through the sealing boss 105, and an inlet / outlet valve 303 is installed on the inlet / outlet pipe 302, which is located on the outside of the frame mechanism. The pressure-bearing bowl 304 is attached to the end face of the airbag ball 301, and a sealing ring 305 is provided on the edge of the pressure-bearing bowl 304. During installation, the inlet / outlet valve 303 is first switched on and off to control the flow of air in the inlet / outlet pipe 302, and air is supplied to the airbag ball 301 through the inlet / outlet pipe 302. 1. Most of the compressed air is filled into the pipe body 4, causing the airbag ball 301 to expand slightly smaller than the inner diameter of the pipe body 4. Then, with the support of the airbag ball 301, the pressure cup 304 is inserted into the pipe body 4 from the end. Then, a small amount of compressed air is filled into the airbag ball 301 again through the air inlet / outlet pipe 302, causing the airbag ball 301 to expand and press against the inner wall of the pipe body 4. During operation, the air pressure in the pipe body 4 pushes the pressure cup 304 to diffuse outward and is pressed against the inner wall of the pipe body 4 through the sealing ring 305, forming the first layer of sealing effect. The airbag ball 301 expands and presses against the inner wall of the pipe, forming the second layer of sealing effect. It also increases the friction through the contact surface, sharing the fixing force burden on the arc-shaped clamping plate 204.

[0028] Working principle: During installation, first, the inlet and outlet air valves 303 are switched to control the airflow in the inlet and outlet air pipes 302. Most of the compressed air is then injected into the airbag bulb 301 through the inlet and outlet air pipes 302, causing the airbag bulb 301 to expand slightly smaller than the inner diameter of the pipe body 4. Then, supported by the airbag bulb 301, the pressure cup 304 is inserted into the pipe body 4 from the end. Next, the end cover plate 101 is pushed, causing the sealing boss 105 to press against the end face of the pipe body 4. The connecting rib 103, together with the support ring 102, surrounds the outer circumference of the pipe body 4. Then, a small amount of compressed air is injected into the airbag bulb 301 again through the inlet and outlet air pipes 302, causing the airbag bulb 301 to expand and press against the inner wall of the pipe body 4. Finally, the two clamping screws 201 are rotated by the handwheel handle 203, causing the clamping screws 201 to... 01 rotates under the support of the support seat 104, and rotates within the connecting seat 206 through the limiting baffle 202 to push the arc-shaped clamping plate 204 to clamp and fix the pipe body 4 from both sides. The anti-slip rubber pad 205 increases the friction to prevent slippage, and the limiting pin 207 prevents the limiting baffle 202 from coming out of the connecting seat 206. During operation, the air pressure inside the pipe body 4 pushes the pressure bowl 304 to diffuse outward and is pressed against the inner wall of the pipe body 4 through the sealing ring 305, forming the first layer of sealing effect. The airbag ball 301 expands and presses against the inner wall of the pipe to seal, forming the second layer of sealing effect. It also increases the friction through the contact surface to share the fixing force burden on the arc-shaped clamping plate 204. The sealing boss 105 presses the end of the pipe body 4 through the frustum shape, forming the third layer of sealing effect.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pipeline sealing device for gas engineering, comprising a support assembly (1) for sealing and supporting the end of the pipeline body (4), characterized in that: It also includes two clamping components (2) symmetrically installed on the bracket assembly (1) for clamping and fixing the pipe body (4), and a force-increasing component (3) for inflating and expanding to block the pipe body (4) and increasing friction in the middle of the bracket assembly (1); The bracket assembly (1) includes a frame mechanism that is closed at one end, a sealing boss (105) is provided in the middle of the closed end of the frame mechanism, and two support seats (104) are symmetrically arranged at the open end of the frame mechanism. The clamping assembly (2) includes a clamping screw (201) threadedly connected to the support base (104). A handwheel handle (203) is provided at the top of the clamping screw (201), and an arc-shaped clamping plate (204) is provided at the bottom of the clamping screw (201). A transition mechanism for easy replacement and rotational connection is provided between the clamping screw (201) and the arc-shaped clamping plate (204). The force-enhancing component (3) includes an airbag ball (301) attached to the end face of the sealing boss (105). A pressure-bearing bowl (304) is provided at the end of the airbag ball (301) away from the sealing boss (105), and an air intake mechanism is provided on the side of the airbag ball (301) away from the pressure-bearing bowl (304).

2. The pipeline sealing device for gas engineering according to claim 1, characterized in that: The air intake mechanism includes an air inlet / outlet pipe (302) passing through the sealing boss (105), and an air inlet / outlet valve (303) is installed on the air inlet / outlet pipe (302), which is located on the outside of the frame mechanism.

3. A pipeline sealing device for gas engineering according to claim 2, characterized in that: The pressure bowl (304) is attached to the end face of the airbag ball (301), and a sealing ring (305) is provided on the edge of the pressure bowl (304).

4. A pipeline sealing device for gas engineering according to claim 1, characterized in that: The transition mechanism includes a limiting baffle (202) provided at the bottom end of the clamping screw (201) and a connecting seat (206) provided on the arc-shaped clamping plate (204). Two limiting pins (207) are symmetrically installed on the connecting seat (206), and the limiting pins (207) prevent the limiting baffle (202) from dislodging from the connecting seat (206).

5. A pipeline sealing device for gas engineering according to claim 4, characterized in that: The bottom surface of the arc-shaped clamping plate (204) is covered with an anti-slip pad (205).

6. A pipeline sealing device for gas engineering according to claim 1, characterized in that: The frame structure includes an end cover plate (101), a support ring (102) is provided on one side of the end cover plate (101), and a number of connecting ribs (103) are evenly distributed between the end cover plate (101) and the support ring (102), forming a cylindrical frame as a whole.

7. A pipeline sealing device for gas engineering according to claim 6, characterized in that: The sealing boss (105) is frustoconical in shape, and its bottom surface is attached to the center of the end cover plate (101).

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