CN219327892U - Internal expansion type plugging head - Google Patents
Internal expansion type plugging head Download PDFInfo
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- CN219327892U CN219327892U CN202320864260.8U CN202320864260U CN219327892U CN 219327892 U CN219327892 U CN 219327892U CN 202320864260 U CN202320864260 U CN 202320864260U CN 219327892 U CN219327892 U CN 219327892U
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- 238000007789 sealing Methods 0.000 claims abstract description 57
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 230000000903 blocking effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 10
- 238000012360 testing method Methods 0.000 abstract description 6
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses an internal expansion type plugging head in the field of pipeline detection, which comprises a cylinder body shell, wherein a piston head is slidably arranged in the cylinder body shell, a top sleeve is arranged at one end part of the cylinder body shell, a piston slide rod penetrating through the other end part of the cylinder body shell is slidably connected in the top sleeve, and a locking nut is arranged at one end part of the piston slide rod. According to the utility model, when the pipeline is required to be pressurized and tested, the plugging head is inserted into the end part of the pipeline, then the gap between the cylinder body shell and the piston head is inflated and pressurized through the inflation hole, then the piston slide rod can be pulled to slide along the inner wall of the cylinder body shell, and then the elastic sleeve can be extruded to shrink so as to be in tight connection with the inner wall of the pipeline, so that the sealing effect can be greatly improved, after the test is finished, the pressurization is stopped, the elastic sleeve is automatically reset, the plugging head can be easily taken down, the device is extremely practical and convenient, the sealing effect can be adjusted by controlling the pressurized pressure, and the controllability is strong.
Description
Technical Field
The utility model relates to the field of pipeline detection, in particular to an internal expansion type blocking head.
Background
When the pipeline pressure is tested, especially when the pipeline pressure is tested to the pressure-bearing pipeline and the gas pipeline, the end part of the pipeline is required to be sealed by the sealing plug, but after the installation of the existing pipeline end sealing head, the sealing effect is poor in controllability and poor in sealing effect due to the expansion force of the sealing head. Accordingly, those skilled in the art have provided an internal expansion stopper to solve the problems set forth in the background art.
Disclosure of Invention
The utility model aims to provide an internal expansion type blocking head so as to solve the problems in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the internal expanding type blocking head comprises a cylinder body shell, a piston head is slidably arranged in the cylinder body shell, a top sleeve is arranged at one end of the cylinder body shell, a piston slide rod penetrating through the other end of the cylinder body shell is slidably connected in the top sleeve, a lock nut is arranged at one end of the piston slide rod, a retainer ring is arranged on one side of the lock nut, an elastic sleeve is clamped between the retainer ring and the top sleeve, an air charging hole is formed in one side wall of the piston head, a middle guide hole is formed in the middle of the piston head, and an air guide hole communicated with the air charging hole is formed in one side of the middle guide hole on the piston head.
As a further scheme of the utility model: the middle part of the piston slide bar is provided with an air passing hole which is communicated with the middle diversion hole, and the piston head is provided with a pressurizing hole which is perpendicular to the middle diversion hole and is positioned at the bottom of the middle diversion hole.
As a further scheme of the utility model: the piston slide bar is in threaded sealing connection with the piston head, an annular first sealing groove is formed in the outer wall of the piston head and located at the inner wall of the cylinder body shell, and a first sealing ring for sealing is clamped and pressed between the inner portion of the first sealing groove and the inner hole of the cylinder body shell.
As a further scheme of the utility model: and a second sealing groove is formed in the periphery of the piston slide rod on the inner wall of the cylinder body shell, and a second sealing ring for sealing is clamped and pressed between the second sealing groove and the outer circle of the piston slide rod.
As a further scheme of the utility model: the piston slide rod and the cylinder body shell are in sliding seal through the second sealing ring, and the cylinder body shell and the piston head are in sliding seal through the first sealing ring.
As a further scheme of the utility model: the locking nut is connected with the piston slide rod through threads, and the retainer ring is clamped and pressed between the locking nut and the outer circular surface shaft shoulder of the piston slide rod on the periphery of the piston slide rod.
As a further scheme of the utility model: the elastic sleeve is made of elastic rubber.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, when the pipeline is required to be pressurized and tested, the plugging head is inserted into the end part of the pipeline, then the gap between the cylinder body shell and the piston head is inflated and pressurized through the inflation hole, then the piston slide rod can be pulled to slide along the inner wall of the cylinder body shell, and then the elastic sleeve can be extruded to shrink so as to be in tight connection with the inner wall of the pipeline, so that the sealing effect can be greatly improved, after the test is finished, the pressurization is stopped, the elastic sleeve is automatically reset, the plugging head can be easily taken down, the device is extremely practical and convenient, the sealing effect can be adjusted by controlling the pressurized pressure, and the controllability is strong.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic diagram of a rear view of the structure of the present utility model;
FIG. 3 is a cross-sectional view of the present utility model at the location of an inflation port;
FIG. 4 is an enlarged view of a portion of the utility model at A in FIG. 3;
FIG. 5 is a cross-sectional view of the piston head of the present utility model at the location of the pressurization hole.
In the figure: 1. a cylinder housing; 2. a piston head; 201. an air filling hole; 202. an air guide hole; 203. a middle diversion hole; 204. a first seal groove; 205. a first sealing ring; 206. sealing grooves II; 207. a second sealing ring; 208. a pressurizing hole; 3. a top cover; 4. an elastic sleeve; 5. a piston slide bar; 501. air passing holes; 6. a lock nut; 7. and (5) a retainer ring.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 to 5, in the embodiment of the utility model, the internal expansion type plugging head comprises a cylinder housing 1, a piston head 2 is slidably arranged in the cylinder housing 1, a top sleeve 3 is mounted at one end of the cylinder housing 1, a piston slide rod 5 penetrating through the other end of the cylinder housing 1 is slidably connected in the top sleeve 3, a lock nut 6 is arranged at one end of the piston slide rod 5, a retainer ring 7 is arranged at one side of the periphery of the lock nut 6, an elastic sleeve 4 is clamped between the retainer ring 7 and the top sleeve 3 at the periphery of the piston slide rod 5, an air charging hole 201 is formed in one side wall of the piston head 2, a middle guide hole 203 is formed in the middle of the piston head 2, and an air guide hole 202 communicated with the air charging hole 201 is formed in one side of the piston head 2, which is positioned in the middle guide hole 203.
Through adopting above-mentioned technical scheme, can insert this shutoff head to pipeline tip when the pipeline is tested in need of pressurizing, then aerify the pressurization in to the clearance between cylinder body shell 1 and the piston head 2 through the gas filling hole 201, then can stimulate piston slide bar 5 and slide along the inner wall of cylinder body shell 1, and then can extrude elastic sleeve 4 shrink, make it and the inner wall of pipeline between tight connection that rises, can improve sealed effect greatly, after the test finishes, stop the pressurization, elastic sleeve 4 automatic re-setting, can be relaxed take off this shutoff head, and is extremely practical convenient, and sealed effect can be adjusted through controlling the pressurized pressure, and the controllability is strong.
Wherein, the middle part of the piston slide bar 5 is provided with an air passing hole 501, the air passing hole 501 is communicated with the middle guide hole 203, the piston head 2 is provided with a pressurizing hole 208 which is vertical to the middle guide hole 203 at the bottom of the middle guide hole 203, and the outside air to be pressurized can be conveyed into the pipeline through the pressurizing hole 208, the middle guide hole 203 and the air passing hole 501, so that the inside pressurization of the pipeline is realized, and the method is extremely convenient.
The piston slide rod 5 is in threaded sealing connection with the piston head 2, an annular first sealing groove 204 is formed in the outer wall of the piston head 2 and located at the inner wall of the cylinder body shell 1, a first sealing ring 205 for sealing is clamped and pressed between the inner part of the first sealing groove 204 and the inner hole of the cylinder body shell 1, and sealing between the piston head 2 and the cylinder body shell 1 can be achieved.
A second sealing groove 206 is formed in the inner wall of the cylinder body shell 1 and located at the periphery of the piston slide rod 5, a second sealing ring 207 for sealing is clamped and pressed between the second sealing groove 206 and the outer circle of the piston slide rod 5, and sealing between the piston slide rod 5 and the cylinder body shell 1 can be achieved.
The piston slide rod 5 and the cylinder body shell 1 are in sliding seal through the second sealing ring 207, the cylinder body shell 1 and the piston head 2 are in sliding seal through the first sealing ring 205, and sliding of the piston slide rod 5 and the piston head 2 can be sealed and protected.
The locking nut 6 is connected with the piston slide rod 5 through threads, and the retainer ring 7 is clamped and pressed between the locking nut 6 and the outer circular surface shaft shoulder of the piston slide rod 5 at the periphery of the piston slide rod 5.
In this example, the elastic sleeve 4 is an elastic rubber.
Working principle: when the sealing head is used, the sealing head is inserted into the end part of a pipeline needing to be tested for pressure, then the gap between the cylinder body shell 1 and the piston head 2 is inflated and pressurized through the inflation hole 201, then the piston slide rod 5 can be pulled to slide along the inner wall of the cylinder body shell 1, the elastic sleeve 4 can be extruded to shrink, the sealing effect can be greatly improved by expanding and connecting the sealing head with the inner wall of the pipeline, after the testing is finished, the elastic sleeve 4 is stopped to be pressurized, the sealing head can be easily removed, the sealing head is extremely practical and convenient, the sealing effect can be adjusted by controlling the pressurized pressure, the controllability is strong, and the gas needing to be pressurized and tested outside can be conveyed into the pipeline through the pressurization hole 208, the middle diversion hole 203 and the air passing hole 501, so that the pressurized test on the interior of the pipeline is realized, and the sealing test on the pipeline is extremely convenient.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (7)
1. The internal expanding type blocking head comprises a cylinder body shell (1), and is characterized in that: the novel cylinder is characterized in that a piston head (2) is slidably arranged in the cylinder body shell (1), a top sleeve (3) is arranged at one end of the cylinder body shell (1), a piston slide rod (5) penetrating through the other end of the cylinder body shell (1) is slidably connected in the top sleeve (3), a lock nut (6) is arranged at one end of the piston slide rod (5), a retainer ring (7) is arranged on one side of the lock nut (6) at the periphery of the piston slide rod (5), an elastic sleeve (4) is clamped between the retainer ring (7) and the top sleeve (3) at the periphery of the piston slide rod (5), an air charging hole (201) is formed in one side wall of the piston head (2), a middle air guiding hole (203) is formed in the middle of the piston head (2), and an air guiding hole (202) communicated with the air charging hole (201) is formed in one side of the piston head (2).
2. The internal expanding plug of claim 1, wherein: the middle part of the piston slide bar (5) is provided with an air passing hole (501), the air passing hole (501) is communicated with the middle guide hole (203), and the piston head (2) is provided with a pressurizing hole (208) perpendicular to the middle guide hole (203) at the bottom of the middle guide hole (203).
3. The internal expanding plug of claim 2, wherein: the piston slide rod (5) is in threaded sealing connection with the piston head (2), an annular first sealing groove (204) is formed in the outer wall of the piston head (2) and located at the inner wall of the cylinder body shell (1), and a first sealing ring (205) for sealing is clamped and pressed between the inner part of the first sealing groove (204) and the inner hole of the cylinder body shell (1).
4. The internal expanding plug of claim 3, wherein: a second sealing groove (206) is formed in the periphery of the piston slide rod (5) on the inner wall of the cylinder body shell (1), and a second sealing ring (207) for sealing is clamped and pressed between the second sealing groove (206) and the outer circle of the piston slide rod (5).
5. The internal expanding plug of claim 4, wherein: the piston slide rod (5) and the cylinder body shell (1) are in sliding sealing through the second sealing ring (207), and the cylinder body shell (1) and the piston head (2) are in sliding sealing through the first sealing ring (205).
6. The internal expanding plug of claim 5, wherein: the locking nut (6) is connected with the piston slide rod (5) through threads, and the retainer ring (7) is clamped and pressed between the locking nut (6) and the outer circular surface shaft shoulder of the piston slide rod (5) at the periphery of the piston slide rod (5).
7. The internal expanding plug of claim 1, wherein: the elastic sleeve (4) is made of elastic rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320864260.8U CN219327892U (en) | 2023-04-18 | 2023-04-18 | Internal expansion type plugging head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320864260.8U CN219327892U (en) | 2023-04-18 | 2023-04-18 | Internal expansion type plugging head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219327892U true CN219327892U (en) | 2023-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320864260.8U Active CN219327892U (en) | 2023-04-18 | 2023-04-18 | Internal expansion type plugging head |
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| CN (1) | CN219327892U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116734080A (en) * | 2023-08-11 | 2023-09-12 | 瑞纳智能设备股份有限公司 | Internal expansion type sealing plug |
-
2023
- 2023-04-18 CN CN202320864260.8U patent/CN219327892U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116734080A (en) * | 2023-08-11 | 2023-09-12 | 瑞纳智能设备股份有限公司 | Internal expansion type sealing plug |
| CN116734080B (en) * | 2023-08-11 | 2023-12-29 | 瑞纳智能设备股份有限公司 | Internal expansion type sealing plug |
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