Pipe plug device for pressurized tapped tee fittings

Abstract

This utility model discloses a pipe plug device for pressurized perforated tee fittings, comprising a cylindrical pipe plug body, with two or more locking blocks that can reciprocate radially around an axis on the annular side of the pipe plug body; the inner wall of the pipe to be blocked has an annular groove matching the thickness of the locking blocks; when all the locking blocks extend from the annular side of the pipe plug body and engage with the annular groove, the pipe plug body is fixed to the pipe to be blocked, thus sealing the pipe; on the upper surface of the pipe plug body facing the outer side of the pipe to be blocked, each locking block has an elongated hole / groove extending radially along the pipe plug body; each locking block has a sliding shaft passing through the corresponding elongated hole / groove and connected to the corresponding elongated hole / groove in a sliding pair. This utility model optimizes the sealing performance of the pipe plug, as well as the convenience of installation and construction efficiency, through improvements to the structure of the pipe plug and connecting disc.

Description

Technical Field

[0001] This utility model relates to the field of pipeline uninterrupted tapping technology, and in particular to a pipe plug device for pressurized tapping tee fittings. Background Technology

[0002] Pipe clamping tees are essential tools in gas pipeline construction without interrupting service. They are widely used in connecting new and old pipelines, branching pipelines, and repairing or upgrading pipelines, playing a crucial role, especially in the connection of new and old pipelines in urban low-pressure gas networks. Their main functions include: achieving seamless connection between new and old pipelines through pressurized tapping technology without interrupting service; opening branches on the main pipeline to connect new pipelines; and enabling rapid repair and upgrading through bypassing or diversion in case of pipeline leaks or blockages.

[0003] like Figures 1 to 3 The existing technology shown has many advantages, such as high safety, adopting closed mechanical cutting technology, which effectively avoids the fire and explosion risks caused by traditional hot work cutting; uninterrupted operation, reducing economic losses caused by gas outages and significantly improving construction efficiency; simple operation, requiring no complicated welding or hot work, making the construction process simple and quick; strong applicability, suitable for various pipe materials and different ambient temperatures (-10℃~45℃), and meets multiple international standards.

[0004] However, the pipe plugs inside the pipe fittings are currently fixed by a spiral locking pin, and the durability, stability and sealing performance of the pipe fittings still need to be improved under extreme environmental conditions.

[0005] Pipe plugs and fittings are key consumable components in pipeline maintenance and construction, widely used in opening and sealing operations of various pipeline systems. They are fixed to the pipeline to be worked on by welding, providing a stable mounting support for the opening and sealing equipment.

[0006] Both the flange plug and the fitting are equipped with a plug with a sealing ring within the flange body, and the plug is secured by a locking pin or locking block. A connecting disc on the plug connects to the plug and the lower plug, used for inserting and removing the plug. Additionally, a blind flange is provided, which can be closed after operation to protect and reinforce the seal. A bypass interface can be provided at the neck of the flange plug according to user requirements for connecting a bypass.

[0007] A locking pin or locking block is a helical limiting device that secures the pipe plug by setting a helical structure on the tee fitting. Before welding, the pipe plug must be removed from the fitting and stored properly. When disassembling the pipe plug, pay attention to the locking pin or locking ring around the flange to ensure it is in place, and record the number of turns of the screw sleeve. This will help accurately determine whether the locking pin or locking block is locked in place when the fitting is closed. This design restricts the radial and axial movement of the pipe plug through a mechanical structure, effectively preventing the pipe plug from shifting within the pipe due to pressure or vibration. However, manufacturing the fitting requires drilling holes in the vertical face of the flange and integrating multiple locking pins, resulting in higher costs and more complex manufacturing. Furthermore, it is less efficient in plugging and has poorer sealing performance.

[0008] Moreover, the existing pipe plug technology integrates locking pins by opening holes in the pipe flange face. After the pipe plug is inserted into place, it is fixed by the extension of the spiral locking pin. Therefore, it is not stable enough and is prone to problems such as air leakage.

[0009] Therefore, how to improve the sealing performance of pipe plugs, as well as the ease of installation and construction efficiency, has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0010] In view of the above-mentioned deficiencies of the prior art, the present invention provides a pipe plug device for pressurized perforated tee fittings, the purpose of which is to improve the sealing performance of the pipe plug as well as the convenience of installation and construction efficiency.

[0011] To achieve the above objectives, this utility model discloses a pipe plug device for a pressurized tee fitting, comprising a cylindrical pipe plug body, wherein the annular side of the pipe plug body is provided with two or more locking blocks that can reciprocate radially around an axis.

[0012] The inner wall of the pipe to be blocked is provided with an annular groove that matches the thickness of the clamping block;

[0013] When all the locking blocks extend from the annular side of the plug body and engage with the annular groove, the plug body is fixed to the pipe that needs to be blocked, thereby blocking the pipe.

[0014] The upper surface of the plug body facing the outside of the pipe to be blocked is provided with an elongated hole / groove extending radially along the plug body for each of the clamps;

[0015] Each of the card blocks is provided with a sliding shaft that passes through the corresponding elongated hole / slot and is connected to the corresponding elongated hole / slot in a sliding pair.

[0016] Preferably, it also includes a rotating disk that drives all the locking blocks to extend out of the annular side of the plug body, or drives all the locking blocks to retract into the annular side of the plug body;

[0017] The rotating disk is provided with a waist-shaped hole corresponding to each of the sliding shafts;

[0018] All the waist-shaped holes are arranged in a ring around the rotation center of the rotating disk. One end of each hole is located at the position of the corresponding sliding shaft when the corresponding locking block extends out to the maximum of the annular side of the tube plug body. The other end of each hole is located at the position of the corresponding sliding shaft when the corresponding locking block retracts into the deepest part of the annular side of the tube plug body.

[0019] More preferably, the rotating center of the rotating disk is provided with a mounting hole, a connecting fastener is provided through the mounting hole, and a connecting bolt is provided on the connecting fastener to connect with the lower plug.

[0020] The beneficial effects of this utility model are:

[0021] This invention improves the sealing performance of the pipe plug, as well as the ease of installation and construction efficiency by modifying the structure of the pipe plug and connecting disc.

[0022] The following will further explain the concept, specific structure and technical effects of this utility model in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of this utility model. Attached Figure Description

[0023] Figure 1 A schematic diagram of the existing technology structure is shown.

[0024] Figure 2 A schematic diagram of the structure of a plug in the prior art is shown.

[0025] Figure 3 This diagram illustrates a prior art pipe plug with a connecting disc.

[0026] Figure 4 A schematic diagram of an embodiment of the present invention is shown.

[0027] Figure 5 The diagram shows a schematic of the annular groove in one embodiment of the present invention.

[0028] Figure 6 This diagram shows a structural schematic of the plug body without the main block extending in one embodiment of the present invention.

[0029] Figure 7 This diagram shows a schematic of the protruding plug body block in one embodiment of the present invention.

[0030] Figure 8 The diagram shows a structural schematic of an embodiment of the present invention, which includes a rotating disk.

[0031] Figure 9 The diagram shows a schematic representation of the rotating disk in one embodiment of the present invention.

[0032] Figure 10 This diagram shows a structural schematic of the connecting fastener and connecting bolt in one embodiment of the present invention.

[0033] Figure 11 The diagram shows an exploded view of the rotating disk with a connecting fastener and connecting bolts in one embodiment of the present invention.

[0034] Figure 12 The diagram shows a structural schematic of a rotating disk equipped with a connecting fastener and connecting bolts in one embodiment of the present invention. Detailed Implementation

[0035] Example: Figures 4 to 7 As shown, a pipe plug device for a pressurized tee fitting includes a cylindrical pipe plug body 1, and two or more locking blocks 3 that can reciprocate radially are provided on the annular side of the pipe plug body 1 around the axis.

[0036] The inner wall of the pipe to be blocked is provided with an annular groove 2 that matches the thickness of the clamp 3;

[0037] When all the locking blocks 3 extend from the annular side of the plug body 1 and are locked into the annular groove 4, the plug body 1 is fixed in the pipe that needs to be blocked, thus achieving the blocking of the pipe.

[0038] The upper surface of the plug body 1 faces the outside of the pipe to be sealed, and each locking block 3 is provided with an elongated hole / groove 5 extending radially along the plug body 1;

[0039] Each card block 3 is provided with a sliding shaft 6 that passes through the corresponding elongated hole / slot 5 and is connected to the corresponding elongated hole / slot 5 in a sliding pair.

[0040] The pipe plug body 1 of this utility model includes two or more retractable and movable locking blocks 3 on its annular side, and an annular groove 2 set on the inner wall of the pipe to be sealed, which matches the thickness of the locking blocks 3. Through the locking engagement of the locking blocks 3 and the annular groove 2, the pipe plug body 1 is fixed to the pipe to be sealed, thereby effectively preventing gas leakage. It can adapt to complex working conditions, especially to uneven or corroded inner surfaces of pipes, ensuring sealing performance under high pressure or complex working conditions. Through the locking engagement of the locking blocks 3 and the annular groove 2, it is ensured that the pipe plug body 1 and the pipe to be sealed can fit tightly together, and there will be no displacement or leakage even in high-speed airflow or high-pressure environments. The locking blocks 3 and the annular groove 2 have good vibration resistance and pressure resistance, and can withstand high pipe pressure.

[0041] In practical applications, the card block 3 can be made of high-strength materials and has good corrosion resistance.

[0042] Moreover, the overall design is simple, easy to manufacture and maintain, which reduces the overall construction cost. The installation and disassembly of the card block 3 and the annular groove 2 are simple, which reduces construction time and labor intensity and improves the efficiency of hot tapping operations.

[0043] like Figures 8 to 12 As shown, in some embodiments, a rotating disk 7 is also included to drive all the locking blocks 3 to extend out of the annular side of the plug body 1, or to drive all the locking blocks 3 to retract into the annular side of the plug body 1.

[0044] Each of the rotating disks 7 and each sliding shaft 6 is provided with a waist-shaped hole 8;

[0045] All the waist-shaped holes 8 are arranged in a ring around the rotation center of the rotating disk 7. One end of each hole is located at the position of the corresponding sliding shaft 6 when the corresponding locking block 3 extends out to the maximum of the annular side of the tube plug body 1. The other end of each hole is located at the position of the corresponding sliding shaft 6 when the corresponding locking block 3 retracts into the deepest part of the annular side of the tube plug body 1.

[0046] In practical applications, the rotating disk 7 is equipped with an oblong hole 8 that can drive the sliding shaft 6 to move, so as to transfer the rotational force of the rotating disk 7 to the sliding shaft 6 to realize the movement and extension of the locking block 3, thereby making it easier to complete the fixed installation and disassembly of the locking block 3 and the annular groove 2.

[0047] In some embodiments, the rotation center of the rotating disk 7 is provided with a mounting hole, through which a connecting fastener 9 is installed, and a connecting bolt 10 is provided on the connecting fastener 9 to connect with the lower plug.

[0048] In practical applications, the connecting fastener 9, connecting bolt 10, and rotating disk 7 are combined and installed to form a connecting disk, which serves as the connecting medium between the lower plug and the pipe plug body 1. The pipe plug body 1 can be moved up and down or the rotating disk 7 can be rotated by the operating rod of the lower plug, so that the operating block 3 can be engaged with the annular groove 2 after the pipe plug body 1 is in place, thus achieving a safe, stable, and sealed effect.

[0049] The plug body 1 of this utility model is fixed to the pipe to be sealed by the snap-fit ​​of the locking block 3 and the annular groove 2. The self-compensating double snap-ring sealing module has two sets of special alloy snap rings that can slide axially inside the plug body. The plug body 1 forms a multi-level snap-fit ​​fixation with the inner wall of the pipe to be sealed through the tenon and mortise structure, which eliminates the leakage hazards caused by the locking pin or locking ring hole of the old pipe fitting, thereby significantly improving safety and reducing the operational risk.

[0050] The locking block 3 fits tightly with the annular groove 2, which not only makes it more stable but also significantly improves the sealing performance, making it easier to insert the plug after the hole is opened, thus improving work efficiency and the pass rate of plugging on the first try.

[0051] Furthermore, the tighter contact between the locking block 3 and the annular groove 2 effectively prevents gas leakage, especially under high pressure or high flow conditions. This stable structure ensures the safe operation of the system.

[0052] This invention significantly improves the reliability and stability of the entire system by reducing the risk of displacement of the plug body 1 and avoiding sealing failure caused by the plug body 1 falling off or shifting.

[0053] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A pipe plug device for pressurized perforated tee fittings, comprising a cylindrical pipe plug body (1); characterized in that, The annular side of the plug body (1) is provided with two or more locking blocks (3) that can move radially back and forth around the axis. The inner wall of the pipe to be blocked is provided with an annular groove (2) that matches the thickness of the block (3); When all the locking blocks (3) extend from the annular side of the plug body (1) and are locked into the annular groove (4), the plug body (1) is fixed to the pipe that needs to be blocked, thereby blocking the pipe that needs to be blocked. The upper surface of the plug body (1) facing the outside of the pipe to be blocked is provided with an elongated hole / groove (5) extending radially along the plug body (1) for each of the card blocks (3). Each of the card blocks (3) is provided with a sliding shaft (6) that passes through the corresponding elongated hole / slot (5) and is connected to the corresponding elongated hole / slot (5) in a sliding pair.

2. The pipe plug device for a pressurized perforated tee fitting according to claim 1, characterized in that, It also includes a rotating disk (7) that drives all the locking blocks (3) to extend out of the annular side of the plug body (1) or drives all the locking blocks (3) to retract into the annular side of the plug body (1). The rotating disk (7) is provided with a waist-shaped hole (8) for each of the sliding shafts (6); All the waist-shaped holes (8) are arranged in a ring around the rotation center of the rotating disk (7). One end is located at the position of the corresponding sliding shaft (6) when the corresponding card block (3) extends out of the annular side of the tube plug body (1) to the maximum. The other end is located at the position of the corresponding sliding shaft (6) when the corresponding card block (3) retracts into the annular side of the tube plug body (1) to the deepest point.

3. The pipe plug device for a pressurized perforated tee fitting according to claim 2, characterized in that, The rotating disk (7) has a mounting hole at its rotation center. A connecting fastener (9) is installed through the mounting hole, and a connecting bolt (10) is installed on the connecting fastener (9) to connect with the lower plug.

Images