Gas pipeline plugging device

Abstract

The gas pipeline plugging device comprises a gas pipe and further comprises a sealing plate, a first top plate and a second top plate, the sealing plate plugs an opening in the right end of the gas pipe, the left side face of the sealing plate is connected with an inner pipe stretching into the gas pipe, the inner pipe is round outside and square inside, and a driving plate is arranged in the inner pipe in a left-right sliding mode. A U-shaped groove is formed in each side face, making contact with the inner pipe, of the driving plate in a sunken mode, first top plates corresponding to the U-shaped grooves are arranged on the outer wall of the inner pipe, a connecting plate is connected to the inner side face of each first top plate, the free end of each connecting plate movably penetrates through the circumferential wall of the inner pipe and extends into the corresponding U-shaped groove, and an inclined sliding hole is formed in each connecting plate. A driving rod penetrates through each sliding hole, and the two ends of each driving rod are connected with the side faces of the U-shaped grooves on the same side; the left side face of the sealing plate is connected with an outer pipe arranged outside the gas pipe in a sleeving mode, and a plurality of second top plates jacking the outer wall of the gas pipe are arranged on the inner wall of the outer pipe. The plugging device solves the problem that when the plugging device is used for plugging the port of the gas pipeline, the connection strength is not high.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline plugging technical field, concretely relates to a gas pipeline plugging device. BACKGROUND

[0002] As a special pressure pipeline system, gas pipeline is an important infrastructure for conveying dangerous media such as natural gas and liquefied petroleum gas (LPG), and plays an irreplaceable role in urban energy supply, industrial production and people's livelihood. Under the working conditions of pipeline engineering construction, maintenance and repair or equipment downtime, the sealing treatment of the pipeline port as a key safety procedure directly relates to the operation standardization and reliability of the gas leakage prevention and control effect, and plays a decisive role in preventing major safety accidents such as explosion and suffocation.

[0003] The current plugging technology generally uses special plugging devices to seal the pipeline, but this measure has significant technical defects: the mechanical connection between the device and the pipe body is not stable enough, and under the action of continuous gas pressure load, axial displacement and radial vibration are easy to occur, resulting in stress relaxation phenomenon at the sealing interface. The structural failure under this dynamic working condition not only directly reduces the gas tightness index, but also may cause secondary leakage accidents, forming a major safety hazard. SUMMARY

[0004] The utility model discloses to solve the problem that the plugging device is not high in connecting strength when plugging the gas pipeline port, provides a gas pipeline plugging device, can improve the plugging effect of the plugging device on the pipeline port, and improve the safety.

[0005] In order to solve the above problem, the technical scheme of the utility model is:

[0006] A gas pipeline plugging device, comprising a gas pipe, further comprising a sealing plate, a top plate one and a top plate two, the sealing plate seals the right end opening of the gas pipe, the left side of the sealing plate is connected with an inner pipe extending into the gas pipe, the outer circle of the inner pipe is square, a driving plate is slidably arranged in the inner pipe, a U-shaped groove is recessed on each side of the driving plate in contact with the inner pipe, a top plate one corresponding to each U-shaped groove is arranged on the outer wall of the inner pipe, a connecting plate is connected to the inner side of each top plate one, the free end of the connecting plate is movably penetrated through the peripheral wall of the inner pipe and extends into the corresponding U-shaped groove, an inclined sliding hole is arranged on each connecting plate, a driving rod is arranged in each sliding hole, and the two ends of each driving rod are connected to the same side of the U-shaped groove.

[0007] Further, a ring-shaped groove is recessed on the left side of the sealing plate, a sealing ring is arranged on the right side of the ring-shaped groove, and the right end of the gas pipe extends into the ring-shaped groove and presses the sealing ring.

[0008] Further, the inner tube outer diameter and the gas pipe inner diameter are matched, the inner tube right end opening is connected with the sealing plate, and the inner tube left end is closed; the inner tube is internally provided with a screw rod, the screw rod left end is rotationally connected with the inner tube closed end, the right end is movably penetrated through the sealing plate to connect a driving block, and the screw rod is threadedly connected with the driving plate.

[0009] Further, the top plate one is an arc plate, the outer diameter of the circular ring where the plurality of top plate ones are located is equal to the inner tube outer diameter; and the inner tube outer wall is recessed with a groove one matched with the plurality of top plate ones.

[0010] Further, the outer tube inner diameter and the gas pipe outer diameter are matched, the outer tube inner wall on the outside of each top plate one is recessed with a groove two, each groove two is internally and correspondingly provided with a top plate two, the top plate two is an arc plate body, the inner diameter of the circular ring where the plurality of top plate twos are located is matched with the gas pipe outer diameter; each top plate two is provided with a bolt, the head of each bolt is located outside the outer tube, the rod body of the bolt is threadedly connected with the outer tube, and the rod body end of the bolt is rotationally connected with the corresponding top plate two.

[0011] Further, the plurality of sliding holes are annularly arranged along the inner tube central axis, the plurality of sliding holes right ends are all inclined away from the inner tube central axis direction, and the plurality of driving rods are annularly arranged along the inner tube central axis.

[0012] Through the above technical scheme, the utility model discloses the beneficial effects are:

[0013] The utility model discloses the inner tube is inserted into the gas pipe, and the outer tube is sleeved on the gas pipe, drives the plurality of top plate one and presses the gas pipe inner wall tightly, drives the plurality of top plate two and presses the gas pipe outer wall tightly, can realize the inside and outside clamping of the gas pipe, and further improve the connection strength of the utility model and the gas pipe, improve the plugging effect to the gas pipe, improve the security. ACCURATE DRAWINGS

[0014] Figure 1 It is the structure schematic diagram of the utility model;

[0015] Figure 2 It is the sectional view of the utility model;

[0016] Figure 3 It is Figure 2 the sectional view of A-A place in;

[0017] Figure 4 It is the structure schematic diagram of the inner cylinder of the utility model;

[0018] Figure 5 It is the structure schematic diagram of the screw rod, driving plate and connecting plate connection of the utility model;

[0019] Figure 6 It is the structure schematic diagram of the top plate one and connecting plate connection of the utility model;

[0020] Figure 7 is the structure diagram of the second top plate and the bolt connection.

[0021] The figure mark is: 1, gas pipe, 2, sealing plate, 3, top plate one, 4, top plate two, 5, drive plate, 6, U-shaped groove, 7, connecting plate, 8, sliding hole, 9, drive rod, 10, inner tube, 11, outer tube, 12, annular groove, 13, sealing ring, 14, screw rod, 15, drive block, 16, groove two, 17, bolt, 18, groove one. DETAILED DESCRIPTION

[0022] The utility model will be further explained in connection with the drawings and specific embodiment:

[0023] As Figures 1-7 The utility model discloses a gas pipeline plugging device, including gas pipe 1, still including sealing plate 2, top plate one 3 and top plate two 4, sealing plate 2 is the circular plate body of greater diameter than the outer diameter of gas pipe 1, sealing plate 2 blocks the right end opening of gas pipe 1, and the left side of sealing plate 2 is connected with the inner tube 10 that stretches into gas pipe 1, the inner tube 10 is square in the outer circle, the inner tube 10 is equipped with drive plate 5 and slides left and right, drive plate 5 is the long rectangular plate of side surface sliding contact inner side of inner tube 10, the side surface of each drive plate 5 and inner tube 10 contact is recessed with U-shaped groove 6, and the left and right ends of U-shaped groove 6 respectively penetrate drive plate 5 left and right side, and the outer wall of inner tube 10 is equipped with top plate one 3 corresponding to each U-shaped groove 6, and the inner side of each top plate one 3 is connected with connecting plate 7, connecting plate 7 is the long rectangular plate, and the free end of connecting plate 7 is movably penetrated into corresponding U-shaped groove 6 and stretches into the outer wall of inner tube 10, and each connecting plate 7 is equipped with the oblique sliding hole 8, sliding hole 8 is the long strip-shaped hole, and each sliding hole 8 is equipped with drive rod 9, drive rod 9 is the circular rod body of the diameter and the width of sliding hole 8, and the two ends of each drive rod 9 are connected with the side surface of the same side U-shaped groove 6, the left side of sealing plate 2 is connected with the outer tube 11 that is sleeved on the outside of gas pipe 1, and the inner wall of outer tube 11 is equipped with a plurality of top plate two 4 that top pressure gas pipe 1 outer wall.

[0024] The left side of sealing plate 2 is recessed with annular groove 12, the right side of annular groove 12 is equipped with sealing ring 13, and the right end of gas pipe 1 stretches into annular groove 12 and top pressure sealing ring 13.

[0025] The outer diameter of inner tube 10 and the inner diameter of gas pipe 1 correspond, the right end opening of inner tube 10 is connected with sealing plate 2, and the left end of inner tube 10 is closed, the inner tube 10 is equipped with screw rod 14, the closed end of inner tube 10 is rotatably connected with the left end of screw rod 14, the right end of screw rod 14 movably penetrates sealing plate 2 and is connected with drive block 15, and screw rod 14 is screw connected with drive plate 5.

[0026] The top plate 3 is an arc-shaped plate, and the outer diameter of the ring containing the multiple top plates 3 is equal to the outer diameter of the inner tube 10; the outer wall of the inner tube 10 has a groove 18 that corresponds to the multiple top plates 3.

[0027] The inner diameter of the outer pipe 11 corresponds to the outer diameter of the gas pipe 1. Each outer pipe 11 on the outer side of the top plate 3 has a recessed groove 16. Each groove 16 is equipped with a top plate 4. The top plate 4 is an arc-shaped plate. The inner diameter of the ring containing multiple top plates 4 corresponds to the outer diameter of the gas pipe 1. Each top plate is equipped with a bolt 17. The head of each bolt 17 is located outside the outer pipe 11. The shank of the bolt 17 is threaded to the outer pipe 11. The end of the shank of the bolt 17 is rotatably connected to the corresponding top plate 4.

[0028] The multiple sliding holes 8 are arranged in a ring array along the central axis of the inner tube 10, and the right ends of the multiple sliding holes 8 are inclined away from the central axis of the inner tube 10. The multiple driving rods 9 are arranged in a ring array along the central axis of the inner tube 10.

[0029] During installation, in the initial state, each top plate 3 is located in the corresponding groove 18, and each top plate 4 is located in the corresponding groove 16. The inner tube 10 extends into the gas pipe 1, and the outer tube 11 is fitted over the gas pipe 1. The right end of the gas pipe 1 extends into the annular groove 12 and presses against the sealing ring 13. The drive block 15 is rotated to rotate the screw 14. When the screw 14 rotates, it drives the drive plate 5 to move to the left. Each drive rod 9 on the drive plate 5 presses against the side of the sliding hole 8, causing each connecting plate 7 to drive the connected top plate 3 to move away from the central axis of the inner tube 10 until multiple top plates 3 press against the inner wall of the gas pipe 1. Each bolt 17 is rotated to move the end of the rod of each bolt 17 towards the outer wall of the gas pipe 1 until each top plate 4 presses against the outer wall of the gas pipe 1. Therefore, the inner wall of the gas pipe 1 of this invention is pressed against by multiple top plates 3, and the outer wall of the gas pipe 1 is pressed against by multiple top plates 4, which can improve the connection strength between this invention and the gas pipe 1.

[0030] The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Any equivalent or equivalent modifications or substitutions to the technical solutions of the present utility model without departing from the spirit of the present utility model or the scope of disclosure shall fall within the protection scope of the present utility model.

Claims

1. A gas pipeline obturator comprising a gas pipe (1), characterized in that, Also include the sealing plate (2), top plate one (3) and top plate two (4), the sealing plate (2) blocks the gas pipe (1) right end opening, the sealing plate (2) left side is connected with the inner tube (10) that stretches into the gas pipe (1) inside, the inner tube (10) outer circle inside square, the inner tube (10) inside left and right slide is equipped with the drive plate (5), the drive plate (5) every side that contacts with the inner tube (10) is recessed with U type slot (6) on, the inner tube (10) outer wall is equipped with with every U type slot (6) corresponding top plate one (3), every top plate one (3) inside side is connected with the connecting plate (7), the free end of connecting plate (7) is active and passes through the inner tube (10) circumference wall and stretches into the corresponding U type slot (6) inside, every connecting plate (7) is equipped with the inclined slide hole (8) on, every slide hole (8) is all threaded with drive rod (9), every drive rod (9) both ends are connected with the same side U type slot (6) side face;The sealing plate (2) left side is connected with the outer tube (11) that is covered in the gas pipe (1) outside, the outer tube (11) inner wall is equipped with multiple top plate two (4) that press the gas pipe (1) outer wall.

2. A gas pipeline plug according to claim 1, wherein, The left side of the sealing plate (2) is recessed with an annular groove (12), and the right side of the annular groove (12) is provided with a sealing ring (13). The right end of the gas pipe (1) extends into the annular groove (12) and presses the sealing ring (13).

3. A gas pipeline plug according to claim 1, wherein, The outer diameter of the inner tube (10) matches the inner diameter of the gas pipe (1), the right end opening of the inner tube (10) is connected with the sealing plate (2), and the left end of the inner tube (10) is closed. A screw rod (14) is arranged in the inner tube (10), the left end of the screw rod (14) is rotatably connected with the closed end of the inner tube (10), the right end of the screw rod (14) is movably connected with the sealing plate (2) and connected with a driving block (15), and the screw rod (14) is threadedly connected with the drive plate (5).

4. A gas pipeline plug according to claim 1, wherein, The top plate one (3) is an arc plate, the outer diameter of the circular ring where the plurality of top plate one (3) is located is equal to the outer diameter of the inner tube (10). The outer wall of the inner tube (10) is recessed with a groove one (18) corresponding to the plurality of top plate one (3).

5. A gas pipeline plug according to claim 1, wherein, The inner diameter of the outer tube (11) matches the outer diameter of the gas pipe (1), and the inner wall of the outer tube (11) on the outer side of each top plate one (3) is recessed with a groove two (16). Each groove two (16) is correspondingly provided with a top plate two (4). The top plate two (4) is an arc plate body, the inner diameter of the circular ring where the plurality of top plate two (4) is located matches the outer diameter of the gas pipe (1). Each top plate two is provided with a bolt (17), the head of each bolt (17) is located outside the outer tube (11), the rod body of the bolt (17) is threadedly connected with the outer tube (11), and the rod body end of the bolt (17) is rotatably connected with the corresponding top plate two (4).

6. A gas pipeline plug according to claim 1, wherein, A plurality of slide holes (8) are arranged in a ring array along the central axis of the inner tube (10), the right ends of the plurality of slide holes (8) are inclined away from the central axis of the inner tube (10), and a plurality of drive rods (9) are arranged in a ring array along the central axis of the inner tube (10).

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