CN217355949U - Internal expansion type pipeline end sealing connection device - Google Patents
Internal expansion type pipeline end sealing connection device Download PDFInfo
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- CN217355949U CN217355949U CN202221251668.XU CN202221251668U CN217355949U CN 217355949 U CN217355949 U CN 217355949U CN 202221251668 U CN202221251668 U CN 202221251668U CN 217355949 U CN217355949 U CN 217355949U
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Abstract
The utility model discloses an internal expanding type pipeline end sealing and connecting device, which comprises a connecting seat, a connecting head, a sliding sleeve and a sealing ring; a first vent hole is formed in the connecting seat, a second vent hole is coaxially formed in the connecting head, one end of the connecting head is inserted into the connecting seat and fixed with the connecting seat, and a first sealing structure is arranged between one end of the connecting head and the connecting seat; the sealing ring is sleeved outside the other end of the connector and abuts against the annular step; one end of the sliding sleeve is slidably sleeved outside the connector and a second sealing structure is arranged between the sliding sleeve and the connector, and the other end of the sliding sleeve is slidably sleeved outside the connecting seat and a third sealing structure is arranged between the sliding sleeve and the connecting seat; the first sealing structure, the second sealing structure and the third sealing structure enclose an annular sealing cavity, an air inlet is arranged in the connecting seat, and one end of the air inlet is communicated with the sealing cavity; the utility model discloses can be in the same place with the tip sealing connection reliably of being surveyed the pipeline.
Description
Technical Field
The utility model relates to a pipeline end seal connecting device technical field, concretely relates to interior expanding pipeline end seal connecting device.
Background
After the pipeline production is finished, the air tightness of the pipeline needs to be detected, and the main purpose of the air tightness detection is to detect whether the pipeline leaks or not; the current method for detecting the air tightness of the pipeline is as follows: firstly, plugging one end of a pipeline to be detected, then, hermetically connecting a sealing joint with the other end of the pipeline to be detected, then, charging compressed air into the pipeline to be detected through an inflation tube connected with the sealing joint, after the pipeline to be detected is inflated, cutting off an air source through an air valve positioned on the inflation tube, meanwhile, monitoring the air pressure in the inflation tube in real time through a pressure sensor on the inflation tube connected between the sealing joint and the air valve, and if the pipeline to be detected has no leakage, detecting that the air pressure in the inflation tube has pressure loss by the pressure sensor, thus, indicating that the pipeline to be detected has no leakage phenomenon, and if the pressure sensor detects that the air pressure in the inflation tube has pressure loss, indicating that the pipeline to be detected has leakage phenomenon, through the steps, detecting the air tightness of the pipeline can be realized; however, when the sealing joint applied in the above detection process is connected to the end of the measured pipeline in a sealing manner, the sealing joint and the measured pipeline are connected in a sealing manner in an abutting manner, so that the sealing joint and the measured pipeline have the disadvantages of poor sealing effect and poor reliability, that is, leakage is likely to occur between the sealing joint and the end of the measured pipeline, and the precision and reliability of the airtightness detection on the pipeline are affected.
SUMMERY OF THE UTILITY MODEL
The utility model provides a not enough to prior art, the utility model provides an interior expanding pipeline end sealing connection device, it can be in the same place with the tip sealing connection reliably of being surveyed the pipeline.
The utility model discloses an internal expanding type pipeline end sealing connecting device, which comprises a connecting seat, a connecting head, a sliding sleeve and a sealing ring; a first vent hole is formed in the connecting seat, a second vent hole is coaxially formed in the connecting head, one end of the connecting head is inserted into the connecting seat and fixed with the connecting seat, a first sealing structure is arranged between one end of the connecting head and the connecting seat, the other end of the connecting head is used for being inserted into one end of a pipeline to be tested, one end of the first vent hole is communicated with one end of the second vent hole, and an inflation inlet used for being connected with an inflation pipe is formed at the other end of the first vent hole; the outer wall of the other end of the connector is provided with an annular step, and the sealing ring is sleeved outside the other end of the connector and abuts against the annular step; one end of the sliding sleeve is slidably sleeved outside the connector and a second sealing structure is arranged between the sliding sleeve and the connector, and the other end of the sliding sleeve is slidably sleeved outside the connecting seat and a third sealing structure is arranged between the sliding sleeve and the connecting seat; first seal structure, second seal structure and third seal structure enclose into the sealed chamber of an annular form, are provided with the inlet port in the connecting seat, the one end and the sealed chamber intercommunication of inlet port, the other end of inlet port forms the air inlet, when having compressed air to enter in the air inlet, the one end of sliding sleeve is used for moving towards one side of sealing washer and extrudeing the sealing washer so that the sealing washer produce behind the deformation with the outer wall of connector and the inner wall of being surveyed the pipeline expand tightly.
The utility model discloses an internal expanding type pipeline end sealing connecting device, wherein, one end of the connecting head is coaxially provided with a screwed joint with the outer diameter smaller than that of the connecting head, the inner wall of the connecting seat is provided with an internal thread, and the screwed joint is in threaded connection with the internal thread; by adopting the structure, one end of the connecting head can be reliably and fixedly connected with the connecting seat.
The utility model discloses an internal expanding type pipeline end sealing connecting device, wherein, a countersunk head part with a regular hexagon shape is arranged on the inner wall of the other end of the connector; after the countersunk head part with the regular hexagon shape is arranged on the inner wall of the other end of the connector, when one end of the connector is connected with the connecting seat in a threaded manner, the connector can be inserted into the countersunk head part by an outer hexagonal wrench and screwed by the outer hexagonal wrench, and thus, one end of the connector can be conveniently connected with the connecting seat in a threaded manner.
The utility model discloses an internal expanding type pipeline end sealing connecting device, wherein, an annular chamfer surface which is used for being matched and guided with the inner wall of a measured pipeline so as to facilitate the other end of a connector to be inserted into the measured pipeline is arranged on the outer wall of the other end of the connector; after the annular chamfer surface is arranged on the outer wall of the other end of the connector, the annular chamfer surface can be matched with the inner wall of the pipeline to be detected to guide in the process that the other end of the connector is inserted into the pipeline to be detected, so that the other end of the connector can be conveniently inserted into the pipeline to be detected.
The utility model discloses an internal expanding type pipeline end part sealing connecting device, wherein, the first sealing structure comprises a first sealing ring, a first annular caulking groove is arranged on the outer wall of one end of the connector, the first sealing ring is embedded in the first annular caulking groove, and the first sealing ring, the first annular caulking groove and the connecting seat are all tightly attached and sealed; by adopting the first sealing structure, reliable sealing can be realized between one end of the connecting head and the connecting seat.
The utility model discloses an internal expanding type pipeline end part sealing connection device, wherein, the second sealing structure comprises a second sealing ring, a second annular caulking groove is arranged on the inner wall of one end of the sliding sleeve, the second sealing ring is embedded in the second annular caulking groove, and the second sealing ring, the second annular caulking groove and the outer wall of the connector are tightly attached and sealed; by adopting the second sealing structure, reliable sealing can be realized between one end of the sliding sleeve and the outer wall of the connecting head.
The utility model discloses an internal expanding type pipeline end part sealing connecting device, wherein, the third sealing structure includes a third sealing ring, a third annular caulking groove is arranged on the outer wall of the connecting seat, the third sealing ring is embedded in the third annular caulking groove, and the third sealing ring, the third annular caulking groove and the inner wall of the other end of the sliding sleeve are all tightly attached and sealed; by adopting the third sealing structure, the other end of the sliding sleeve and the connecting seat can be reliably sealed.
The utility model discloses an internal expanding type pipeline end sealing connecting device, wherein, the outside of the connector between the sealing ring and the sliding sleeve is slidably sleeved with a pushing sleeve made of metal material, one end of the pushing sleeve is used for leaning against the sealing ring, and the other end of the pushing sleeve is used for leaning against one end of the sliding sleeve; after the pushing sleeve made of metal materials is sleeved outside the connector between the sealing ring and the sliding sleeve, when the sliding sleeve moves towards one side of the sealing ring, the sliding sleeve can push the pushing sleeve, and the pushing sleeve can reliably push the sealing ring.
The utility model discloses when carrying out sealing connection with the tip of being surveyed the pipeline, the other end of connector can insert in the one end of being surveyed the pipeline, and under the effect of sliding sleeve, the sliding sleeve can push away the sealing washer so that the sealing washer produces the outer wall of deformation back and connector and the inner wall of being surveyed the pipeline expand tightly, so, compare with the sealing mode that the tradition adoption tip offseted, have with the end seal of being surveyed the pipeline effectual and the advantage of high reliability, can effectively avoid appearing the condition of revealing between the tip of connector and being surveyed the pipeline promptly, thereby can improve precision and the reliability that detects the gas tightness of pipeline.
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 view of a first three-dimensional structure of the present invention;
fig. 2 is a schematic view of a second three-dimensional structure of the present invention;
fig. 3 is a schematic sectional view of the present invention.
Detailed Description
In the following description, numerous implementation details are set forth in order to provide a more thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations 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 "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
As shown in fig. 1-3, the internal expansion type pipe end sealing connection device of the present invention comprises a connection seat 1, a connection head 2, a sliding sleeve 3 and a sealing ring 4; a first vent hole 11 is formed in the connecting seat 1, a second vent hole 21 is coaxially formed in the connecting head 2, one end of the connecting head 2 is inserted into the connecting seat 1 and is fixed with the connecting seat 1, a first sealing structure is arranged between one end of the connecting head 2 and the connecting seat 1, the other end of the connecting head 2 is used for being inserted into one end of a pipeline to be tested, one end of the first vent hole 11 is communicated with one end of the second vent hole 21, and an inflation inlet 12 used for being connected with an inflation pipe is formed at the other end of the first vent hole 11; an annular step 22 is arranged on the outer wall of the other end of the connector 2, and the sealing ring 4 is sleeved outside the other end of the connector 2 and abuts against the annular step 22; one end of the sliding sleeve 3 is slidably sleeved outside the connector 2 and a second sealing structure is arranged between the sliding sleeve 3 and the connector 2, the other end of the sliding sleeve 3 is slidably sleeved outside the connecting seat 1 and a third sealing structure is arranged between the sliding sleeve 3 and the connecting seat 1; first seal structure, second seal structure and third seal structure enclose into the seal chamber 5 of an annular form, be provided with inlet port 13 in the connecting seat 1, the one end and the seal chamber 5 intercommunication of inlet port 13, the other end of inlet port 13 forms air inlet 14, when having compressed air to enter in the air inlet 14, the one end of sliding sleeve 3 is used for moving towards one side of sealing washer 4 and extrudees sealing washer 4 so that sealing washer 4 produces behind the deformation with the outer wall of connector 2 and the inner wall of being surveyed the pipeline expand tightly.
A threaded joint 23 with the outer diameter smaller than that of the connector 2 is coaxially arranged at one end of the connector 2, internal threads 15 are arranged on the inner wall of the connecting seat 1, and the threaded joint 23 is in threaded connection with the internal threads 15; by adopting the structure, one end of the connecting head can be reliably and fixedly connected with the connecting seat.
A countersunk head part 24 in a regular hexagon shape is arranged on the inner wall of the other end of the connector 2; after the countersunk head part with the regular hexagon shape is arranged on the inner wall of the other end of the connector, when one end of the connector is connected with the connecting seat in a threaded manner, the connector can be inserted into the countersunk head part by an outer hexagonal wrench and screwed by the outer hexagonal wrench, and thus, one end of the connector can be conveniently connected with the connecting seat in a threaded manner.
An annular chamfer surface 25 which is matched with the inner wall of the pipeline to be measured and guided so as to facilitate the other end of the connector 2 to be inserted into the pipeline to be measured is arranged on the outer wall of the other end of the connector 2; after the annular chamfer surface is arranged on the outer wall of the other end of the connector, the annular chamfer surface can be matched with the inner wall of the pipeline to be detected to guide in the process that the other end of the connector is inserted into the pipeline to be detected, so that the other end of the connector can be conveniently inserted into the pipeline to be detected.
The first sealing structure comprises a first sealing ring 6, a first annular caulking groove 26 is formed in the outer wall of one end of the connector 2, the first sealing ring 6 is embedded in the first annular caulking groove 26, and the first sealing ring 6, the first annular caulking groove 26 and the connecting seat 1 are tightly attached and sealed; by adopting the first sealing structure, reliable sealing can be realized between one end of the connecting head and the connecting seat.
The second sealing structure comprises a second sealing ring 7, a second annular caulking groove 31 is formed in the inner wall of one end of the sliding sleeve 3, the second sealing ring 7 is embedded in the second annular caulking groove 31, and the second sealing ring 7, the second annular caulking groove 31 and the outer wall of the connector 2 are tightly attached and sealed; by adopting the second sealing structure, reliable sealing can be realized between one end of the sliding sleeve and the outer wall of the connecting head.
The third sealing structure comprises a third sealing ring 8, a third annular caulking groove 16 is formed in the outer wall of the connecting seat 1, the third sealing ring 8 is embedded in the third annular caulking groove 16, and the third sealing ring 8, the third annular caulking groove 16 and the inner wall of the other end of the sliding sleeve 3 are tightly attached and sealed; by adopting the third sealing structure, the other end of the sliding sleeve and the connecting seat can be reliably sealed.
A pushing sleeve 9 made of a metal material is slidably sleeved outside the connector 2 positioned between the sealing ring 4 and the sliding sleeve 3, one end of the pushing sleeve 9 is used for abutting against the sealing ring 4, and the other end of the pushing sleeve 9 is used for abutting against one end of the sliding sleeve 3; after the ejection sleeve made of metal materials is sleeved outside the connector between the sealing ring and the sliding sleeve, when the sliding sleeve moves towards one side of the sealing ring, the sliding sleeve can push the ejection sleeve, and the ejection sleeve can reliably push the sealing ring, so that the sealing ring can be better deformed, and the sealing ring can be more reliably expanded with the outer wall of the connector and the inner wall of the pipeline to be measured.
When the utility model is installed, the inflation inlet is connected with the inflation pipe, and the air inlet is connected with the compressed air supply pipe; the utility model discloses at work, make the other end of connector and the sealing washer that is located connector other end department insert in the one end of pipeline under test at first, make compressed air supply pipe input compressed air into the inlet port next, when having compressed air to enter in the inlet port, compressed air can enter into the seal chamber, at this moment, one end of sliding sleeve can move towards one side of sealing washer and extrude the sealing washer so that the sealing washer produce after deformation expand tightly with the outer wall of connector and the inner wall of pipeline under test, at this moment, can realize sealing connection between one end of connector and pipeline under test; when the other end of the pipeline to be detected is plugged, and an inflation tube connected with the inflation inlet inflates air into the pipeline to be detected, the air tightness detection of the pipeline to be detected can be started; after the air tightness of the pipeline to be detected is detected, the inflation tube connected with the inflation inlet stops filling compressed air into the pipeline to be detected, then the compressed air supply tube connected with the air inlet stops supplying compressed air into the air inlet, and the air inlet is deflated through the air release valve, under the action of resilience force of the sealing ring, the pushing sleeve and the sliding sleeve can slide and reset towards one side far away from the sealing ring, so that the sealing ring can relieve the expansion tightness of the outer wall of the connector and the inner wall of the pipeline to be detected, namely the sealing between the connector and the pipeline to be detected, and finally the other end of the connector and the sealing ring at the other end of the connector are pulled out of one end of the pipeline to be detected.
The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (8)
1. The utility model provides an interior expanding pipeline end sealing connection device which characterized in that: comprises a connecting seat (1), a connecting head (2), a sliding sleeve (3) and a sealing ring (4); a first vent hole (11) is formed in the connecting seat (1), a second vent hole (21) is coaxially formed in the connecting head (2), one end of the connecting head (2) is inserted into the connecting seat (1) and fixed with the connecting seat (1), a first sealing structure is arranged between one end of the connecting head (2) and the connecting seat (1), the other end of the connecting head (2) is used for being inserted into one end of a pipeline to be tested, one end of the first vent hole (11) is communicated with one end of the second vent hole (21), and an inflation inlet (12) used for being connected with an inflation pipe is formed at the other end of the first vent hole (11); an annular step (22) is arranged on the outer wall of the other end of the connector (2), and the sealing ring (4) is sleeved outside the other end of the connector (2) and abuts against the annular step (22); one end of the sliding sleeve (3) is slidably sleeved outside the connector (2) and a second sealing structure is arranged between the sliding sleeve and the connector (2), the other end of the sliding sleeve (3) is slidably sleeved outside the connecting seat (1) and a third sealing structure is arranged between the sliding sleeve and the connecting seat (1); first seal structure, second seal structure and third seal structure enclose into the sealed chamber (5) of an annular form, be provided with inlet port (13) in connecting seat (1), the one end and sealed chamber (5) intercommunication of inlet port (13), the other end of inlet port (13) forms air inlet (14), when having compressed air to enter in air inlet (14), the one end of sliding sleeve (3) is used for removing towards one side of sealing washer (4) and extrudees sealing washer (4) so that sealing washer (4) produce the deformation back with the outer wall of connector (2) and the inner wall of being surveyed the pipeline expand tightly.
2. The end sealing connection device of an internal expansion type pipeline according to claim 1, wherein one end of the connecting head (2) is coaxially provided with a threaded joint (23) with an outer diameter smaller than that of the connecting head (2), the inner wall of the connecting seat (1) is provided with internal threads (15), and the threaded joint (23) is in threaded connection with the internal threads (15).
3. An internally expanding sealed connection device for pipe ends according to claim 2, characterised in that the counter-sunk part (24) with regular hexagonal shape is arranged on the inner wall of the other end of the connecting head (2).
4. An internal expanding sealed pipe end connecting device according to any one of claims 1-3, wherein the outer wall of the other end of the connecting head (2) is provided with an annular chamfer (25) for guiding the inner wall of the pipe to be tested in a matching way so as to facilitate the insertion of the other end of the connecting head (2) into the pipe to be tested.
5. An end sealing and connecting device for an internally expanding pipeline according to any one of claims 1-3, wherein the first sealing structure comprises a first sealing ring (6), a first annular caulking groove (26) is arranged on the outer wall of one end of the connecting head (2), the first sealing ring (6) is embedded in the first annular caulking groove (26), and the first sealing ring (6) is tightly sealed with the first annular caulking groove (26) and the connecting seat (1).
6. An internal expansion type pipe end sealing connection device according to any one of claims 1-3, characterized in that the second sealing structure comprises a second sealing ring (7), a second annular caulking groove (31) is arranged on the inner wall of one end of the sliding sleeve (3), the second sealing ring (7) is embedded in the second annular caulking groove (31), and the second sealing ring (7) is tightly sealed with the second annular caulking groove (31) and the outer wall of the connecting head (2).
7. An internally expanding pipe end sealing and connecting device according to any one of claims 1-3, characterised in that the third sealing structure comprises a third sealing ring (8), a third annular caulking groove (16) is arranged on the outer wall of the connecting seat (1), the third sealing ring (8) is embedded in the third annular caulking groove (16), and the third sealing ring (8) is tightly sealed with the third annular caulking groove (16) and the inner wall of the other end of the sliding sleeve (3).
8. The end sealing connection device of an internally expanding pipeline according to claim 1, characterized in that an ejector sleeve (9) made of metal material is slidably sleeved outside the connection head (2) between the seal ring (4) and the sliding sleeve (3), one end of the ejector sleeve (9) is used for abutting against the seal ring (4), and the other end of the ejector sleeve (9) is used for abutting against one end of the sliding sleeve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221251668.XU CN217355949U (en) | 2022-05-19 | 2022-05-19 | Internal expansion type pipeline end sealing connection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221251668.XU CN217355949U (en) | 2022-05-19 | 2022-05-19 | Internal expansion type pipeline end sealing connection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217355949U true CN217355949U (en) | 2022-09-02 |
Family
ID=83014403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221251668.XU Active CN217355949U (en) | 2022-05-19 | 2022-05-19 | Internal expansion type pipeline end sealing connection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217355949U (en) |
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2022
- 2022-05-19 CN CN202221251668.XU patent/CN217355949U/en active Active
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