CN112923163A - Low-pressure introduction port rapid plugging device and using method thereof - Google Patents
Low-pressure introduction port rapid plugging device and using method thereof Download PDFInfo
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- CN112923163A CN112923163A CN202110362474.0A CN202110362474A CN112923163A CN 112923163 A CN112923163 A CN 112923163A CN 202110362474 A CN202110362474 A CN 202110362474A CN 112923163 A CN112923163 A CN 112923163A
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- clamping
- clamping table
- seat
- pressure inlet
- pipeline
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/11—Plugs
- F16L55/1141—Plugs the plug being made of elastic material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/12—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ
- F16L55/128—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/12—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ
- F16L55/128—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
- F16L55/132—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing
- F16L55/134—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing by means of an inflatable packing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The invention discloses a quick plugging device for a low-voltage lead-in port, which comprises an inner pipeline, wherein a first clamping seat is fixedly arranged at the far end of the inner pipeline, a first clamping table, a supporting seat, a second clamping table and an outer sleeve are sequentially sleeved on the inner pipeline at the near end side of the first clamping seat from the far end to the near end, and the first clamping table and the second clamping table are both made of elastic materials. The invention also discloses a use method of the low-pressure introducing port rapid plugging device. The quick plugging device for the low-pressure introducing port and the using method thereof are simple in structure and convenient to operate, and workers can use the quick plugging device to quickly plug a gas pipeline of the low-pressure introducing port.
Description
Technical Field
The invention relates to the field of gas, in particular to a device for quickly plugging a gas pipeline of a low-pressure inlet and a using method thereof.
Background
When the gas pipe network is maintained and overhauled, the gas pipeline of the low-pressure inlet is generally required to be plugged, so that the maintenance and overhaul work can be normally carried out. However, at present, no suitable plugging device is used for plugging the gas pipeline of the low-pressure inlet, and the plugging is time-consuming and labor-consuming.
Disclosure of Invention
The invention aims to provide a quick plugging device for a low-pressure introducing port and a using method thereof, wherein the plugging device is simple in structure and convenient to operate, and workers can use the plugging device to quickly plug a gas pipeline of the low-pressure introducing port.
The quick plugging device for the low-voltage lead-in port comprises an inner pipeline, wherein a first clamping seat is fixedly arranged at the far end of the inner pipeline, a first clamping table, a supporting seat, a second clamping table and an outer sleeve are sequentially sleeved on the inner pipeline at the near end side of the first clamping seat from the far end to the near end, and the first clamping table and the second clamping table are made of elastic materials.
The quick stopper for the low-pressure inlet is characterized in that the first clamping table is in a circular truncated cone shape, the outer diameter of the first clamping table is gradually increased from the far end to the near end, and a first through hole for an inner pipeline to pass through is formed in the axial direction of the first clamping table.
In the low-pressure inlet quick stopper, the second clamping table is also in a circular truncated cone shape, the outer diameter of the second clamping table gradually decreases from the far end to the near end, and a second through hole for the inner pipeline to pass through is formed in the axial direction of the second clamping table.
The quick plugging device for the low-pressure inlet is characterized in that the supporting seat is in a football shape, and a third through hole for an inner pipeline to pass through is formed between the two ends of the supporting seat.
The invention relates to a low-pressure inlet quick plugging device, wherein a second clamping seat is fixedly arranged at the far end of an outer sleeve.
According to the low-pressure inlet quick plugging device, the first clamping seat and the second clamping seat are both in a circular plate shape.
In the low-pressure inlet quick plugging device, an annular sealing element is arranged between the periphery of the first through hole on the far-end side surface of the first clamping table and the first clamping table.
According to the quick plugging device for the low-pressure inlet, the annular sealing element is an annular sealing ring fixedly arranged on the side surface of the near end of the first clamping seat, and an annular sealing groove matched with the annular sealing ring is formed in the periphery of the first through hole in the side surface of the far end of the first clamping seat.
According to the quick plugging device for the low-pressure inlet, the annular sealing element is an annular sealing ring fixedly arranged on the periphery of the first through hole on the side surface of the far end of the first clamping table, and an annular sealing groove matched with the annular sealing ring is arranged on the side surface of the near end of the first clamping table.
The use method of the quick plugging device for the low-pressure introducing port comprises the following steps:
the far end of the inner pipeline is arranged in a gas pipeline of a low-pressure inlet to be blocked, and the far end of the outer sleeve, the first clamping table, the supporting seat and the second clamping table are all positioned in the gas pipeline,
fixing the outer sleeve, and pulling the inner pipeline along the direction from the far end to the near end to ensure that the first clamping table, the supporting seat and the second clamping table are clamped between the first clamping seat and the second clamping seat,
pulling the inner pipeline continuously along the direction from the far end to the near end to enable the first clamping table to generate deformation with the enlarged outer diameter under the clamping of the first clamping seat and the supporting seat, and simultaneously enable the second clamping table to generate deformation with the enlarged outer diameter under the clamping of the second clamping seat and the supporting seat until the outer peripheral walls of the first clamping table and the second clamping table abut against the inner pipe wall of the gas pipeline to seal the gas pipeline,
then the inner pipeline is loosened to restore the first clamping table and the second clamping table, the blockage of the gas pipeline is relieved,
pulling the inner conduit in a direction from the distal end to the proximal end causes the distal end of the inner conduit and the distal ends of the first and second catches, the support base, and the outer sleeve to disengage from the gas conduit.
The invention relates to a low-pressure inlet quick plugging device and a using method thereof, which are different from the prior art in that when the low-pressure inlet quick plugging device is used, the far end of an inner pipeline is arranged in a gas pipeline of a low-pressure inlet to be plugged, the far end of an outer sleeve, a first clamping table, a supporting seat and a second clamping table are all positioned in the gas pipeline, the outer sleeve is fixed, the inner pipeline is pulled along the direction from the far end to the near end, the inner pipeline slides towards the near end direction relative to the outer sleeve, the first clamping table, the supporting seat and the second clamping table are all clamped between the first clamping table and the second clamping table, the inner pipeline is continuously pulled along the direction from the far end to the near end, the first clamping table generates deformation with the increased outer diameter under the clamping of the first clamping table and the supporting seat, and the second clamping table also generates deformation with the increased outer diameter under the clamping of the second clamping table and the supporting seat, until the outer peripheral walls of the first clamping table and the second clamping table are abutted against the inner pipe wall of the gas pipeline to seal the gas pipeline. Therefore, the quick plugging device for the low-pressure introducing port has a simple structure and is easy and convenient to operate, and workers can use the quick plugging device to quickly plug the gas pipeline of the low-pressure introducing port.
The invention will be further explained with reference to the drawings.
Drawings
FIG. 1 is a front view of a low pressure inlet quick stopper of the present invention;
FIG. 2 is a front cross-sectional view of the low pressure inlet quick stopper of the present invention;
FIG. 3 is a top view of the first cartridge of the present invention;
FIG. 4 is a front cross-sectional view of a first cartridge in accordance with the present invention;
FIG. 5 is a front cross-sectional view of a first chuck table in the present invention;
FIG. 6 is a bottom view of the first chuck table of the present invention;
FIG. 7 is a diagram showing the use state of the low pressure inlet quick stopper of the present invention (when not blocked);
fig. 8 is a view showing a state of use (at the time of plugging) of the low pressure introduction port rapid plugging device of the present invention.
Detailed Description
In the present invention, the terms "distal end" and "proximal end" mean as follows: when the low-pressure introduction port rapid plugging device is used, one end far away from a worker is a far end, and one end close to the worker is a near end.
As shown in fig. 1 and fig. 2 to 8, the low-pressure inlet quick plugging device of the present invention includes an inner line 1, a first clamping seat 8 is fixedly disposed at a distal end of the inner line 1, a first clamping seat 6, a supporting seat 5, a second clamping seat 4 and an outer sleeve 2 are sequentially sleeved on the inner line 1 at a proximal end side of the first clamping seat 8 from the distal end to the proximal end, and the first clamping seat 6 and the second clamping seat 4 are made of elastic materials.
Fixed outer tube 2, when pulling interior pipeline 1 along the direction from the distal end to the near-end (interior pipeline 1 slides towards the near-end direction for outer tube 2), first ka tai 6, supporting seat 5 and second ka tai 4 can be by the centre gripping between the distal end of first cassette 8 and outer tube 2, continue pulling interior pipeline 1, under the centre gripping extrusion of first cassette 8 and supporting seat 5, first ka tai 6 produces the deformation that the external diameter becomes big, simultaneously, under the centre gripping extrusion of supporting seat 5 and outer tube 2, second ka tai 4 also produces the deformation that the external diameter becomes big, first ka tai 6 and second ka tai 4 just can carry out the shutoff to gas pipeline 13 like this.
As shown in fig. 2, the first clamping table 6 is in a circular truncated cone shape, the outer diameter of the first clamping table 6 gradually increases from the distal end to the proximal end, and a first through hole 11 for the inner line 1 to pass through is formed in the axial direction of the first clamping table 6. The second clamping table 4 is also in a circular truncated cone shape, the outer diameter of the second clamping table 4 gradually decreases from the far end to the near end, and a second through hole 9 for the inner pipeline 1 to pass through is formed in the axial direction of the second clamping table 4. The supporting seat 5 is football-shaped, and a third through hole 10 for the inner pipeline 1 to pass through is arranged between the two ends of the supporting seat 5. The proximal end of the inner pipeline 1 passes through the first through hole 11, the third through hole 10 and the second through hole 9 in sequence along the direction from the distal end to the proximal end and then enters the outer sleeve 2.
As shown in fig. 1 and 2, a second clamping seat 3 is fixedly arranged at the distal end of the outer sleeve 2, and the second clamping seat 3 is fixedly arranged on the tube wall of the outer sleeve 2. The first cassette 8 and the second cassette 3 are both disc-shaped. The second clamping seat 3 is used for facilitating the clamping of the first clamping seat 6, the supporting seat 5 and the second clamping seat 4 by the outer sleeve 2 and the first clamping seat 8, and more specifically, for facilitating the clamping of the second clamping seat 4 by the outer sleeve 2 and the supporting seat 5.
In the low-pressure inlet quick stopper, an annular sealing element is arranged between the periphery of the first through hole 11 on the far-end side surface of the first clamping table 6 and the first clamping table 8. As shown in fig. 1 and fig. 2 to 6, the annular sealing element is an annular sealing ring 7 fixedly arranged on a proximal side surface of the first clamping seat 8, and an annular sealing groove 12 matched with the annular sealing ring 7 is arranged on a periphery of a first through hole 11 on a distal side surface of the first clamping seat 6. Of course, the positions of the annular sealing ring 7 and the annular sealing groove 12 can also be interchanged, namely: the annular sealing element is an annular sealing ring 7 fixedly arranged on the periphery of a first through hole 11 on the far-end side face of the first clamping table 6, and an annular sealing groove 12 matched with the annular sealing ring 7 is arranged on the near-end side face of the first clamping table 8.
As shown in fig. 7 and 8, the method for using the low-pressure introduction port rapid plugging device in the invention comprises the following steps:
the far end of the inner pipeline 1 is arranged in a gas pipeline 13 of a low-pressure inlet to be blocked, and the far end of the outer sleeve 2, the first clamping table 6, the supporting seat 5 and the second clamping table 4 are all positioned in the gas pipeline 13,
fixing the outer sleeve 2, and pulling the inner line 1 in a direction from the far end to the near end, so that the first clamping table 6, the supporting seat 5 and the second clamping table 4 are clamped between the first clamping table 8 and the second clamping table 3,
continuing to pull the inner pipeline 1 along the direction from the far end to the near end, so that the first clamping table 6 generates deformation with an enlarged outer diameter under the clamping of the first clamping seat 8 and the supporting seat 5, and simultaneously the second clamping table 4 also generates deformation with an enlarged outer diameter under the clamping of the second clamping seat 3 and the supporting seat 5 until the outer peripheral walls of the first clamping table 6 and the second clamping table 4 are abutted against the inner pipeline wall of the gas pipeline 13 to block the gas pipeline 13,
then the inner pipeline 1 is loosened to restore the first clamping table 6 and the second clamping table 4, the blockage of the gas pipeline 13 is relieved,
pulling the inner line 1 in a distal to proximal direction disengages the distal end of the inner line 1 and the distal ends of the first catch 6, the support base 5, the second catch 4 and the outer sleeve 2 together from the gas duct 13.
As shown in fig. 8, when the outer sleeve 2 is fixed and the inner line 1 is pulled in the distal to proximal direction, the inner pipeline 1 slides towards the near end direction relative to the outer sleeve 2, so that the first clamping seat 8, the first clamping table 6, the supporting seat 5, the second clamping table 4 and the second clamping seat 3 are sequentially abutted (when the first clamping seat 8 is abutted against the first clamping table 6, the annular sealing ring 7 enters the annular sealing groove 12), the inner pipeline 1 is continuously pulled along the direction from the far end to the near end, because the first clamping table 6 and the second clamping table 4 are both made of elastic materials, the first clamping table 6 can generate deformation with enlarged outer diameter under the clamping and extrusion of the first clamping base 8 and the supporting seat 5, meanwhile, the second clamping table 4 also generates deformation with the enlarged outer diameter under the clamping and extruding of the second clamping table 3 and the supporting seat 5 until the outer peripheral walls of the first clamping table 6 and the second clamping table 4 are abutted against the inner pipe wall of the gas pipeline 13 to block the gas pipeline 13. In order to enhance the sealing performance of the plugging, an annular sealing member is arranged between the first clamping seat 8 and the first clamping platform 6, and gas cannot leak from the first through hole 11 of the first clamping platform 6 under the action of the annular sealing member. In this way, the gas is blocked in the gas duct 13 on the distal side of the first chuck 6. The supporting seat 5 is formed in a football shape, so that the first clamping table 6 and the second clamping table 4 are conveniently pressed to be deformed. After the first clamping table 6 and the second clamping table 4 block the gas pipeline 13, the relative positions of the inner pipeline 1 and the outer sleeve 2 are fixed, and even if the first clamping table 6 and the second clamping table 4 keep the state of blocking the gas pipeline 13, a worker can perform maintenance and overhaul operation later. After the maintenance and overhaul operation is completed, the inner pipeline 1 is loosened, so that the inner pipeline 1 is no longer in a tensioned state, the clamping force applied to the first clamping table 6 and the second clamping table 4 through the first clamping table 8, the supporting seat 5 and the second clamping table 3 disappears, the first clamping table 6 and the second clamping table 4 are restored to the original state, the plugging of the gas pipeline 13 is released, as shown in fig. 7, and then the plugging device is pulled out of the gas pipeline 13.
The outer diameters of the first clamping seat 8, the first clamping seat 6, the supporting seat 5, the second clamping seat 4 and the second clamping seat 3 are all smaller than the inner diameter of the gas pipeline 13, wherein the outer diameters of the first clamping seat 6 and the second clamping seat 4 are slightly smaller than the inner diameter of the gas pipeline 13. The diameter of the first clamping seat 8 is larger than the aperture of the first through hole 11, the outer diameter of the supporting seat 5 is larger than the apertures of the first through hole 11 and the second through hole 9, and the diameter of the second clamping seat 3 is larger than the aperture of the second through hole 9.
The invention relates to a low-pressure inlet quick plugging device and a using method thereof, which are different from the prior art in that when the low-pressure inlet quick plugging device is used, the far end of an inner pipeline 1 is arranged in a gas pipeline 13 of a low-pressure inlet to be plugged, the far end of an outer sleeve 2, a first clamping table 6, a supporting seat 5 and a second clamping table 4 are all positioned in the gas pipeline 13, the outer sleeve 2 is fixed, the inner pipeline 1 is pulled along the direction from the far end to the near end, the inner pipeline 1 slides towards the near end direction relative to the outer sleeve 2, the first clamping table 6, the supporting seat 5 and the second clamping table 4 are all clamped between a first clamping seat 8 and a second clamping seat 3, the inner pipeline 1 is pulled continuously along the direction from the far end to the near end, the first clamping seat 6 generates deformation with enlarged outer diameter under the clamping of the first clamping seat 8 and the supporting seat 5, and the second clamping table 4 also generates deformation with enlarged outer diameter under the clamping of the second clamping seat 3 and the supporting seat 5, until the outer peripheral walls of the first clamping table 6 and the second clamping table 4 are abutted against the inner pipe wall of the gas pipeline 13 to seal the gas pipeline 13. Therefore, the quick plugging device for the low-pressure introducing port has a simple structure and is easy and convenient to operate, and workers can use the quick plugging device to quickly plug the gas pipeline 13 of the low-pressure introducing port.
It should be noted that the terms "center", "upper", "lower", "front", "rear", "left", "right", "middle", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (10)
1. A quick plugging device of low pressure inlet which characterized in that: the device comprises an inner pipeline, wherein a first clamping seat is fixedly arranged at the far end of the inner pipeline, a first clamping table, a supporting seat, a second clamping table and an outer sleeve are sequentially sleeved on the inner pipeline at the near end side of the first clamping seat from the far end to the near end, and the first clamping table and the second clamping table are made of elastic materials.
2. A low pressure inlet quick stopper as claimed in claim 1 wherein: the first clamping table is in a round table shape, the outer diameter of the first clamping table is gradually increased from the far end to the near end, and a first through hole for the inner pipeline to pass through is formed in the axis direction of the first clamping table.
3. A low pressure inlet quick stopper as claimed in claim 2 wherein: the second clamping table is also in a round table shape, the outer diameter of the second clamping table gradually decreases from the far end to the near end, and a second through hole for the inner pipeline to pass through is formed in the axis direction of the second clamping table.
4. A low pressure inlet quick stopper as claimed in claim 3 wherein: the supporting seat is football-shaped, and a third through hole for the inner pipeline to pass through is arranged between the two ends of the supporting seat.
5. The low pressure inlet quick stopper according to claim 4, wherein: and a second clamping seat is fixedly arranged at the far end of the outer sleeve.
6. The low pressure inlet quick stopper according to claim 5, wherein: the first clamping seat and the second clamping seat are both in a circular plate shape.
7. The low pressure inlet quick stopper according to claim 6, wherein: an annular sealing element is arranged between the periphery of the first through hole on the far-end side face of the first clamping table and the first clamping seat.
8. The low pressure inlet quick stopper according to claim 7, wherein: the annular sealing element is an annular sealing ring fixedly arranged on the side surface of the near end of the first clamping seat, and an annular sealing groove matched with the annular sealing ring is arranged on the periphery of a first through hole on the side surface of the far end of the first clamping seat.
9. The low pressure inlet quick stopper according to claim 7, wherein: the annular sealing element is an annular sealing ring fixedly arranged on the periphery of a first through hole in the far-end side face of the first clamping table, and an annular sealing groove matched with the annular sealing ring is arranged on the near-end side face of the first clamping table.
10. A method of using the low pressure inlet quick stopper of any one of claims 1 to 9, comprising the steps of:
the far end of the inner pipeline is arranged in a gas pipeline of a low-pressure inlet to be blocked, and the far end of the outer sleeve, the first clamping table, the supporting seat and the second clamping table are all positioned in the gas pipeline,
fixing the outer sleeve, and pulling the inner pipeline along the direction from the far end to the near end to ensure that the first clamping table, the supporting seat and the second clamping table are clamped between the first clamping seat and the second clamping seat,
pulling the inner pipeline continuously along the direction from the far end to the near end to enable the first clamping table to generate deformation with the enlarged outer diameter under the clamping of the first clamping seat and the supporting seat, and simultaneously enable the second clamping table to generate deformation with the enlarged outer diameter under the clamping of the second clamping seat and the supporting seat until the outer peripheral walls of the first clamping table and the second clamping table abut against the inner pipe wall of the gas pipeline to seal the gas pipeline,
then the inner pipeline is loosened to restore the first clamping table and the second clamping table, the blockage of the gas pipeline is relieved,
pulling the inner conduit in a direction from the distal end to the proximal end causes the distal end of the inner conduit and the distal ends of the first and second catches, the support base, and the outer sleeve to disengage from the gas conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110362474.0A CN112923163A (en) | 2021-04-02 | 2021-04-02 | Low-pressure introduction port rapid plugging device and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110362474.0A CN112923163A (en) | 2021-04-02 | 2021-04-02 | Low-pressure introduction port rapid plugging device and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112923163A true CN112923163A (en) | 2021-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110362474.0A Pending CN112923163A (en) | 2021-04-02 | 2021-04-02 | Low-pressure introduction port rapid plugging device and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112923163A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2457412A1 (en) * | 1974-12-05 | 1976-06-10 | Immanuel Jeschke | Arrgmt for sealing a pipe line - consists of elastomer sleeves which are axially compressed by a flexible screw |
| CN203787925U (en) * | 2014-04-16 | 2014-08-20 | 上海贝思特管业有限公司 | Diameter variable pipe stopper assembly |
| CN204962153U (en) * | 2015-07-08 | 2016-01-13 | 常州市武进电力管件有限公司 | Pipe stopper |
| US20160018042A1 (en) * | 2014-07-19 | 2016-01-21 | Stephen Dean Bair | Pressure Sealing Plug |
| CN111852382A (en) * | 2020-09-22 | 2020-10-30 | 东营市正能石油科技有限公司 | Multifunctional combined packer |
| CN111980619A (en) * | 2019-05-24 | 2020-11-24 | 中国石油天然气股份有限公司 | Oil pipe plug |
-
2021
- 2021-04-02 CN CN202110362474.0A patent/CN112923163A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2457412A1 (en) * | 1974-12-05 | 1976-06-10 | Immanuel Jeschke | Arrgmt for sealing a pipe line - consists of elastomer sleeves which are axially compressed by a flexible screw |
| CN203787925U (en) * | 2014-04-16 | 2014-08-20 | 上海贝思特管业有限公司 | Diameter variable pipe stopper assembly |
| US20160018042A1 (en) * | 2014-07-19 | 2016-01-21 | Stephen Dean Bair | Pressure Sealing Plug |
| CN204962153U (en) * | 2015-07-08 | 2016-01-13 | 常州市武进电力管件有限公司 | Pipe stopper |
| CN111980619A (en) * | 2019-05-24 | 2020-11-24 | 中国石油天然气股份有限公司 | Oil pipe plug |
| CN111852382A (en) * | 2020-09-22 | 2020-10-30 | 东营市正能石油科技有限公司 | Multifunctional combined packer |
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Application publication date: 20210608 |