CN215488348U

CN215488348U - Gas plugging device

Info

Publication number: CN215488348U
Application number: CN202121282174.3U
Authority: CN
Inventors: 谢振华; 刘栋
Original assignee: Shanghai Fengxian Gas Co ltd
Current assignee: Shanghai Fengxian Gas Co ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2022-01-11
Anticipated expiration: 2031-06-09

Abstract

The utility model discloses a fuel gas plugging device, which comprises a joint, a guide sleeve, a guide shaft, an expansion sleeve and a handle, wherein the joint is used for being connected with one end of a ball valve, which is far away from a fuel gas pipeline, the guide sleeve is movably arranged in the joint in a penetrating manner and is provided with a first sealing structure between the joint and the guide sleeve, the guide sleeve is used for being inserted into the fuel gas pipeline and a valve core of the ball valve, the guide shaft is movably arranged in the guide sleeve in a penetrating manner and is provided with a second sealing structure between the guide sleeve and the guide sleeve, the right end of the guide shaft extends out of the guide sleeve and is connected with a limiting component, the expansion sleeve is sleeved outside the guide shaft between the guide sleeve and the limiting component, two ends of the expansion sleeve are respectively abutted against the guide sleeve and the limiting component, one end of the handle is abutted against the left end of the guide sleeve and is rotatably connected with the left end of the guide shaft, and the outer diameter of the handle is smaller than the inner diameters of the joint and the valve core of the ball valve; the utility model can realize the plugging of the gas pipeline, thereby avoiding the influence on the normal use of the gas of a user caused by closing the gas main valve and eliminating the potential safety hazard caused by gas leakage.

Description

Gas plugging device

Technical Field

The utility model relates to the technical field of auxiliary tools for gas pipeline construction, in particular to a gas plugging device.

Background

At present, more and more families use pipeline gas, the pipeline gas is conveyed by means of a gas pipeline, a gas main valve is installed on the gas pipeline, and after the gas pipeline is connected to each family, an independent meter front valve (a valve positioned at the front end of a gas meter is called as a meter front valve) is installed on the gas pipeline; at present, when a worker replaces a valve in front of a meter, the gas main valve needs to be closed at first, and after the gas main valve is closed, the influence on the normal use of gas of all users at the rear end of the gas main valve can be caused, so that inconvenience can be brought to the users, if the gas main valve is not closed and the valve in front of the meter is directly replaced, the leakage of the gas can be caused, and great potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a gas plugging device which can plug a gas pipeline, so that a worker can replace a front valve without closing a gas main valve, and can avoid gas leakage, thereby avoiding the influence on the normal use of gas of a user due to the closing of the gas main valve and eliminating potential safety hazard caused by gas leakage.

The utility model relates to a gas stopper, which comprises a joint, a guide sleeve, a guide shaft, an expansion sleeve and a handle, wherein the joint is used for being connected with one end of a ball valve, which is far away from a gas pipeline, the guide sleeve is movably arranged in the joint in a penetrating way, a first sealing structure is arranged between the guide sleeve and the joint, the guide sleeve is used for being inserted into the gas pipeline and a valve core of the ball valve, the guide shaft is movably arranged in the guide sleeve in a penetrating way, a second sealing structure is arranged between the guide sleeve and the guide sleeve, the right end of the guide shaft extends out of the guide sleeve and is connected with a limiting component, the expansion sleeve is sleeved outside the guide shaft between the guide sleeve and the limiting component, two ends of the expansion sleeve are respectively abutted against the guide sleeve and the limiting component, one end of the handle is abutted against the left end of the guide sleeve and is rotatably connected with the left end of the guide shaft, when the handle rotates to the horizontal state, the handle is used for pulling the guide shaft to enable the expansion sleeve to be extruded and deformed by the limiting component and the guide sleeve and enable the outer wall of the expansion sleeve to be tightly attached to the inner wall of the gas pipeline for sealing, the outer diameter of the handle is smaller than the inner diameters of the joint and the valve core of the ball valve.

The left end of the guide sleeve is connected with the end cover, the left end of the guide shaft movably penetrates through the end cover and then extends out of the end cover, one end, facing the guide sleeve, of the handle abuts against the end cover, and the handle and the guide shaft are rotatably connected through a rotating shaft penetrating through the handle and the guide shaft; through the setting of pivot, the handle can rotate with the guide shaft reliably and link together, and in addition, through the setting of end cover, the handle can support with the end cover and lean on, so, can improve the smooth and easy nature when the handle rotates.

The gas stopper comprises a handle, a guide shaft, a gas blocking device and a gas blocking device, wherein the handle is provided with a near end part and a far end part, the near end part and the far end part are in transition through an arc surface, the near end part is close to the rotation center of the handle and the guide shaft, and the far end part is far away from the rotation center of the handle and the guide shaft; when the handle rotates to the horizontal state to enable the distal end portion to abut against the end cover, the handle is used for pulling the guide shaft to enable the expansion sleeve to be extruded and deformed by the limiting assembly and the guide sleeve, the outer wall of the expansion sleeve is enabled to be tightly attached and sealed with the inner wall of the gas pipeline, and when the handle rotates to the vertical state to enable the proximal end portion to abut against the end cover, the handle is used for releasing the guide shaft to enable the expansion sleeve to contract and reset, and the sealing state between the expansion sleeve and the gas pipeline is released; by adopting the structure, when the handle is rotated to be in a horizontal state, the distal end part can be abutted against the end cover, at the moment, the handle can pull the guide shaft, and after the guide shaft is pulled, the expansion sleeve can be extruded by the limiting assembly and the guide sleeve and generates deformation, so that the outer wall of the expansion sleeve can be tightly attached to and sealed with the inner wall of the gas pipeline, and the gas pipeline is blocked; when the handle was rotated to vertical state, the proximal end portion can support with the end cover and lean on, at this moment, the handle can release the guide shaft, so, spacing subassembly and guide pin bushing can relieve the extrusion to the inflation cover, and the inflation cover can contract and reset, and the inflation cover can resume original form promptly, and at this moment, the shutoff to gas pipeline can be relieved to the inflation cover.

According to the gas plugging device, the handle is provided with the first jack, the guide shaft is provided with the second jack, the handle rotates to the horizontal state to enable the distal end portion to abut against the end cover, the first jack is used for being communicated with the second jack, the first jack and the second jack are used for allowing a bolt to be inserted simultaneously, and after the bolt is inserted into the first jack and the second jack simultaneously, the handle and the guide shaft are locked through the bolt; through the setting of first jack and second jack, when the handle was rotated the horizontality, when the inflation cover was in the state of shutoff gas pipeline promptly, can insert a bolt simultaneously in first jack and second jack, so, can make the unable relative guide shaft of handle rotate vertical state, can avoid the handle to be triggered the rotation by the mistake promptly.

The gas plugging device comprises a handle, a rotating shaft, a clamping spring and a gas pipe, wherein the clamping spring is clamped at two ends of the rotating shaft in a matched mode; through the setting of jump ring, can avoid the phenomenon that the pivot breaks away from handle and guide shaft to appear.

The gas plugging device comprises a gas plugging device body, wherein support sleeves are sleeved outside guide shafts positioned on the left side and the right side of an expansion sleeve respectively, the two support sleeves are arranged in a bilateral symmetry mode, one side, facing the expansion sleeve, of each support sleeve is provided with an embedding groove for embedding the end part of the expansion sleeve, the support sleeve positioned on the left side of the expansion sleeve abuts against a guide sleeve, and the support sleeve positioned on the right side of the expansion sleeve abuts against a limiting component; through the setting of two support covers, and every support cover all is provided with the caulking groove that is used for supplying the tip part embedding of inflation cover towards one side of inflation cover, so, can realize location and spacing to the inflation cover to avoid the inflation cover phenomenon that the aversion appears, simultaneously, support the cover through two and extrude the inflation cover, can make the inflation cover produce deformation better.

The gas plugging device comprises a gas plugging device body, a gas plugging device body and a gas plugging device body, wherein the gas plugging device body comprises a gas inlet pipe, a gas outlet pipe and a gas inlet pipe; after the limiting assembly is adopted, the limiting and pre-tightening of the expansion sleeve, the supporting sleeve and the limiting sleeve can be realized by rotating the limiting nut.

The gas plugging device comprises a gas plugging device body, a first sealing structure and a second sealing structure, wherein the first sealing structure comprises at least one first sealing ring embedded between a connector and a guide sleeve, the inner wall of the connector is provided with annular grooves which are arranged in a one-to-one correspondence mode with the first sealing rings, each first sealing ring is partially embedded into the annular groove at the corresponding position, and the inner peripheral wall of each first sealing ring is attached to and sealed with the outer peripheral wall of the guide sleeve; by adopting the structure, the first sealing ring can realize reliable sealing between the guide sleeve and the joint, namely, the gas can be prevented from leaking through the gap between the guide sleeve and the joint when the expansion sleeve is in an unexpanded state.

The gas plugging device comprises a guide sleeve, a first sealing structure and a second sealing structure, wherein the guide sleeve is provided with a guide shaft, the guide shaft is provided with a guide hole, the guide hole is arranged on the guide shaft, and the guide hole is communicated with the guide hole; after the second sealing structure is adopted, the two second sealing rings can reliably realize the sealing between the guide sleeve and the guide shaft, and the gas can be prevented from leaking through the gap between the guide sleeve and the guide shaft when the expansion sleeve is in the unexpanded state.

The gas pipeline plugging device can plug a gas pipeline, so that a worker can replace a front valve under the condition of not closing a gas main valve and can avoid gas leakage, thereby avoiding the influence on normal use of gas of a user due to closing the gas main valve and eliminating potential safety hazards caused by gas leakage.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic perspective view of the assembled gas stopper, ball valve and gas pipeline;

FIG. 2 is a schematic structural view of the assembled gas stopper, ball valve and gas pipeline in front view;

fig. 3 is a schematic sectional structure view of the gas stopper after being assembled with the ball valve and the gas pipeline.

Detailed Description

In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the utility model. That is, in some embodiments of the utility model, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The utility model relates to a gas stopper, which comprises a connector 1, a guide sleeve 2, a guide shaft 3, an expansion sleeve 4 and a handle 5, wherein the connector 1 is used for being connected with one end of a ball valve 6 far away from a gas pipeline 7, the guide sleeve 2 is movably arranged in the connector 1 in a penetrating manner and is provided with a first sealing structure between the guide sleeve 1 and the connector 2, the guide sleeve 2 is used for being inserted into the gas pipeline 7 and a valve core 61 of the ball valve 6, the guide shaft 3 is movably arranged in the guide sleeve 2 in a penetrating manner and is provided with a second sealing structure between the guide sleeve 2 and the guide sleeve 3, the right end of the guide shaft 3 extends out of the guide sleeve 2 and is connected with a limiting component, the expansion sleeve 4 is sleeved outside the guide shaft 3 between the guide sleeve 2 and the limiting component, two ends of the expansion sleeve 4 are respectively abutted against the guide sleeve 2 and the limiting component, one end of the handle 5 is abutted against the left end of the guide sleeve 2 and is rotatably connected with the left end of the guide shaft 3, and when the handle 5 rotates to a horizontal state, the handle 5 is used for pulling the guide shaft 3 to enable the expansion sleeve 4 to be extruded and deformed by the limiting component and the guide sleeve 2 and enable the outer wall of the expansion sleeve 4 to be extruded with the gas pipeline 4 and the outer wall of the gas pipeline 4 to be connected with the gas pipeline 7, and the outer diameter of the handle 5 is smaller than the inner diameter of the joint 1 and the valve core 61 of the ball valve 6.

The left end of the guide sleeve 2 is connected with an end cover 21, the left end of the guide shaft 3 movably penetrates through the end cover 21 and then extends out of the end cover 21, one end, facing the guide sleeve 2, of the handle 5 abuts against the end cover 21, and the handle 5 and the guide shaft 3 are rotatably connected through a rotating shaft 8 penetrating through the handle 5 and the guide shaft 3; through the setting of pivot, the handle can rotate with the guide shaft reliably and link together, and in addition, through the setting of end cover, the handle can support with the end cover and lean on, so, can improve the smooth and easy nature when the handle rotates.

The handle 5 is provided with a proximal end part 51 and a distal end part 52, the proximal end part 51 and the distal end part 52 are transited through a circular arc surface 53, the proximal end part 51 is close to the rotation center of the handle 5 and the guide shaft 3, and the distal end part 52 is far away from the rotation center of the handle 5 and the guide shaft 3; when the handle 5 is rotated to the horizontal state to enable the distal end part 52 to abut against the end cover 21, the handle 5 is used for pulling the guide shaft 3 to enable the expansion sleeve 4 to be extruded and deformed by the limiting assembly and the guide sleeve 2 and enable the outer wall of the expansion sleeve 4 to be tightly sealed with the inner wall of the gas pipeline 7, and when the handle 5 is rotated to the vertical state to enable the proximal end part 51 to abut against the end cover 21, the handle 5 is used for releasing the guide shaft 3 to enable the expansion sleeve 4 to be contracted and reset and the sealing state with the gas pipeline 7 is released; by adopting the structure, when the handle is rotated to be in a horizontal state, the distal end part can be abutted against the end cover, at the moment, the handle can pull the guide shaft, and after the guide shaft is pulled, the expansion sleeve can be extruded by the limiting assembly and the guide sleeve and generates deformation, so that the outer wall of the expansion sleeve can be tightly attached to and sealed with the inner wall of the gas pipeline, and the gas pipeline is blocked; when the handle was rotated to vertical state, the proximal end portion can support with the end cover and lean on, at this moment, the handle can release the guide shaft, so, spacing subassembly and guide pin bushing can relieve the extrusion to the inflation cover, and the inflation cover can contract and reset, and the inflation cover can resume original form promptly, and at this moment, the shutoff to gas pipeline can be relieved to the inflation cover.

The handle 5 is provided with a first insertion hole 54, the guide shaft 3 is provided with a second insertion hole 31, when the handle 5 is rotated to a horizontal state to enable the distal end portion 52 to abut against the end cover 21, the first insertion hole 54 is used for being communicated with the second insertion hole 31, the first insertion hole 54 and the second insertion hole 31 are used for allowing a bolt to be inserted simultaneously, and after the bolt is inserted into the first insertion hole 54 and the second insertion hole 31 simultaneously, the handle 5 and the guide shaft 3 are locked through the bolt; through the setting of first jack and second jack, when the handle was rotated the horizontality, when the inflation cover was in the state of shutoff gas pipeline promptly, can insert a bolt simultaneously in first jack and second jack, so, can make the unable relative guide shaft of handle rotate vertical state, can avoid the handle to be triggered the rotation by the mistake promptly.

Clamping springs 81 are clamped at two ends of the rotating shaft 8 in a matched mode, and the clamping springs 81 are used for abutting against the handle 5 to prevent the rotating shaft 8 from being separated from the handle 5 and the guide shaft 3; through the setting of jump ring, can avoid the phenomenon that the pivot breaks away from handle and guide shaft to appear.

The outer parts of the guide shafts 3 positioned at the left side and the right side of the expansion sleeve 4 are respectively sleeved with a support sleeve 32, the two support sleeves 32 are arranged in bilateral symmetry, one side of each support sleeve 32, which faces the expansion sleeve 4, is provided with an embedded groove 321 for embedding the end part of the expansion sleeve 4, the support sleeve 32 positioned at the left side of the expansion sleeve 4 is abutted against the guide sleeve 2, and the support sleeve 32 positioned at the right side of the expansion sleeve 4 is abutted against the limiting component; through the setting of two support covers, and every support cover all is provided with the caulking groove that is used for supplying the tip part embedding of inflation cover towards one side of inflation cover, so, can realize location and spacing to the inflation cover to avoid the inflation cover phenomenon that the aversion appears, simultaneously, support the cover through two and extrude the inflation cover, can make the inflation cover produce deformation better.

The limiting assembly comprises a limiting sleeve 91 and a limiting nut 92, the limiting sleeve 91 is sleeved outside the guide shaft 3, the limiting nut 92 is in threaded connection with the guide shaft 3, and the limiting sleeve 91 is positioned between the expansion sleeve 4 and the limiting nut 92; after the limiting assembly is adopted, the limiting and pre-tightening of the expansion sleeve, the supporting sleeve and the limiting sleeve can be realized by rotating the limiting nut.

The first sealing structure comprises at least one first sealing ring 10 embedded between the connector 1 and the guide sleeve 2, annular grooves 11 which are arranged in one-to-one correspondence to the first sealing rings 10 are formed in the inner wall of the connector 1, each first sealing ring 10 is partially embedded into the annular groove 11 in the corresponding position, and the inner peripheral wall of each first sealing ring 10 is attached to and sealed with the outer peripheral wall of the guide sleeve 2; by adopting the structure, the first sealing ring can realize reliable sealing between the guide sleeve and the joint, namely, the gas can be prevented from leaking through the gap between the guide sleeve and the joint when the expansion sleeve is in an unexpanded state.

The second sealing structure comprises second sealing rings 22 embedded on the inner walls of the two ends of the guide sleeve 2, and the inner peripheral wall of each second sealing ring 22 is attached to and sealed with the outer peripheral wall of the guide shaft 3; after the second sealing structure is adopted, the two second sealing rings can reliably realize the sealing between the guide sleeve and the guide shaft, and the gas can be prevented from leaking through the gap between the guide sleeve and the guide shaft when the expansion sleeve is in the unexpanded state.

When the utility model is used, firstly, the joint is connected with one end of the ball valve far away from the gas pipeline, then the ball valve is rotated to open, after the ball valve is opened, the gas can be prevented from leaking through the gap between the joint and the guide sleeve and the gap between the guide sleeve and the guide shaft under the action of the first sealing ring and the second sealing ring, then the guide sleeve is pushed, the right end of the guide sleeve, the expansion sleeve and the right end of the guide shaft are pushed into the gas pipeline through the valve core of the ball valve, then the handle is rotated to the horizontal state, after the handle is rotated to the horizontal state, the far end part can be abutted against the end cover (a bolt can be inserted into the first jack and the second jack simultaneously to prevent the handle from being rotated by mistake), at the moment, the handle can pull the guide shaft, after the guide shaft is pulled, the expansion sleeve can be extruded by the limiting component and the guide sleeve and deformed, so that the outer wall of the expansion sleeve can be tightly attached to the inner wall of the gas pipeline, thereby realizing the plugging of the gas pipeline; after the gas pipeline is plugged, the original ball valve and the joint are detached from the gas pipeline (when the original ball valve is detached, a wrench can be used for screwing the original ball valve so as to enable the original ball valve to rotate relative to the gas pipeline, and the joint is movably connected with the guide sleeve, so that when the original ball valve is screwed, the joint can rotate relative to the guide sleeve, in addition, the handle is in a horizontal state, and the outer diameter of the handle is smaller than the inner diameters of the joint and a valve core of the ball valve, so that the original ball valve and the joint can be pulled out from the gas pipeline, after the original ball valve and the joint are detached from the gas pipeline, the joint is unscrewed from the original ball valve, then the joint is connected to one end of a new ball valve, then the new ball valve and the joint are sleeved outside the guide sleeve together, one end of the new ball valve far away from the joint is connected with the gas pipeline, after the new ball valve is connected with the gas pipeline, the plug pins inserted into the first jack and the second jack are pulled away, the handle is rotated to be in a vertical state again, the near end part of the plug pins can abut against the end cover after the handle is rotated to be in the vertical state, at the moment, the handle can release the guide shaft, and therefore the limit assembly and the guide sleeve can release extrusion on the expansion sleeve, the expansion sleeve can be contracted and reset, namely the expansion sleeve can restore to the original shape, and at the moment, the expansion sleeve can release plugging of the gas pipeline; after the expansion sleeve is in a state of removing the blockage of the gas pipeline, pulling the guide sleeve to enable the right end of the guide sleeve, the expansion sleeve and the right end of the guide shaft to exit from the gas pipeline and a valve core of a new ball valve, and finally closing the new ball valve and detaching the joint together with the guide sleeve, the guide shaft and the expansion sleeve from the new gas ball valve; through above-mentioned step back, realized the change to the ball valve, and at the in-process of changing the ball valve, can avoid the gas to leak out from the gas pipeline.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A gas plugging device is characterized in that: the gas pipeline expansion joint comprises a joint (1), a guide sleeve (2), a guide shaft (3), an expansion sleeve (4) and a handle (5), wherein the joint (1) is used for being connected with one end, far away from a gas pipeline (7), of a ball valve (6), the guide sleeve (2) is movably arranged in the joint (1) in a penetrating mode and provided with a first sealing structure between the guide sleeve (2) and the joint (1), the guide sleeve (2) is used for being inserted into the gas pipeline (7) and a valve core (61) of the ball valve (6), the guide shaft (3) is movably arranged in the guide sleeve (2) in a penetrating mode and provided with a second sealing structure between the guide sleeve (2), the right end of the guide shaft (3) extends out of the guide sleeve (2) and is connected with a limiting component, the expansion sleeve (4) is sleeved outside the guide shaft (3) between the guide sleeve (2) and the limiting component, and two ends of the expansion sleeve (4) are respectively abutted against the guide sleeve (2) and the limiting component, one end of the handle (5) is abutted against the left end of the guide sleeve (2) and is rotationally connected with the left end of the guide shaft (3), when the handle (5) rotates to a horizontal state, the handle (5) is used for pulling the guide shaft (3) to enable the expansion sleeve (4) to be extruded and deformed by the limiting assembly and the guide sleeve (2) and enable the outer wall of the expansion sleeve (4) to be tightly attached and sealed with the inner wall of the gas pipeline (7), and the outer diameter of the handle (5) is smaller than the inner diameters of the joint (1) and a valve core (61) of the ball valve (6).

2. The gas stopper according to claim 1, wherein the left end of the guide sleeve (2) is connected with an end cover (21), the left end of the guide shaft (3) movably penetrates through the end cover (21) and then extends out of the end cover (21), one end of the handle (5) facing the guide sleeve (2) abuts against the end cover (21), and the handle (5) and the guide shaft (3) are rotatably connected through a rotating shaft (8) penetrating through the handle (5) and the guide shaft (3).

3. The gas stopper according to claim 2, wherein the handle (5) is provided with a proximal end portion (51) and a distal end portion (52), the proximal end portion (51) and the distal end portion (52) are transited through a circular arc surface (53), the proximal end portion (51) is close to the rotation center of the handle (5) and the guide shaft (3), and the distal end portion (52) is far away from the rotation center of the handle (5) and the guide shaft (3); when the handle (5) rotates to the horizontal state to enable the distal end portion (52) to abut against the end cover (21), the handle (5) is used for pulling the guide shaft (3) to enable the expansion sleeve (4) to be extruded and deformed by the limiting assembly and the guide sleeve (2) and enable the outer wall of the expansion sleeve (4) to be tightly attached and sealed with the inner wall of the gas pipeline (7), when the handle (5) rotates to the vertical state to enable the proximal end portion (51) to abut against the end cover (21), the handle (5) is used for releasing the guide shaft (3) to enable the expansion sleeve (4) to contract and reset and release the sealing state with the gas pipeline (7).

4. The gas stopper according to claim 3, wherein a first insertion hole (54) is formed in the handle (5), a second insertion hole (31) is formed in the guide shaft (3), when the handle (5) is rotated to a horizontal state to enable the distal end portion (52) to abut against the end cover (21), the first insertion hole (54) is used for being communicated with the second insertion hole (31), the first insertion hole (54) and the second insertion hole (31) are used for allowing a plug to be inserted simultaneously, and after the plug is inserted into the first insertion hole (54) and the second insertion hole (31) simultaneously, the handle (5) and the guide shaft (3) are locked through the plug.

5. The gas stopper according to claim 2, wherein a clamp spring (81) is clamped at both ends of the rotating shaft (8) in a matching manner, and the clamp spring (81) is used for abutting against the handle (5) to prevent the rotating shaft (8) from being separated from the handle (5) and the guide shaft (3).

6. The gas stopper according to claim 1, characterized in that the guide shafts (3) on the left and right sides of the expansion sleeve (4) are externally sleeved with support sleeves (32), two support sleeves (32) are arranged in bilateral symmetry, one side of each support sleeve (32) facing the expansion sleeve (4) is provided with a caulking groove (321) for embedding the end part of the expansion sleeve (4), the support sleeve (32) on the left side of the expansion sleeve (4) abuts against the guide sleeve (2), and the support sleeve (32) on the right side of the expansion sleeve (4) abuts against the limiting component.

7. The gas stopper according to claim 1 or 6, wherein the limiting assembly comprises a limiting sleeve (91) and a limiting nut (92), the limiting sleeve (91) is sleeved outside the guide shaft (3), the limiting nut (92) is in threaded connection with the guide shaft (3), and the limiting sleeve (91) is located between the expansion sleeve (4) and the limiting nut (92).

8. The gas stopper according to claim 1, wherein the first sealing structure comprises at least one first sealing ring (10) embedded between the joint (1) and the guide sleeve (2), an annular groove (11) corresponding to each first sealing ring (10) is formed in the inner wall of the joint (1), each first sealing ring (10) is partially embedded in the annular groove (11) in the corresponding position, and the inner peripheral wall of each first sealing ring (10) is attached to and sealed with the outer peripheral wall of the guide sleeve (2).

9. The gas stopper according to claim 1, wherein the second sealing structure comprises second sealing rings (22) fitted on the inner walls of both ends of the guide sleeve (2), and the inner circumferential wall of each second sealing ring (22) is fitted and sealed with the outer circumferential wall of the guide shaft (3).