CN105092172A - Sealing device for gas pipeline weld detection - Google Patents
Sealing device for gas pipeline weld detection Download PDFInfo
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- CN105092172A CN105092172A CN201510522544.9A CN201510522544A CN105092172A CN 105092172 A CN105092172 A CN 105092172A CN 201510522544 A CN201510522544 A CN 201510522544A CN 105092172 A CN105092172 A CN 105092172A
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- arc
- rubber slab
- arc rubber
- groove structure
- sealing cover
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Abstract
The present invention provides a sealing device for gas pipeline weld detection, including an upper sealing cover, a lower sealing cover and a vacuum pump. The upper sealing cover and the lower sealing cover also include arc-shaped pressing plates, arc-shaped rubber plates and alcohol detectors. The arc-shaped rubber plate is arranged in the arc-shaped pressing plate, and the inner side of the arc-shaped rubber plate is provided with a large sucking disc with a groove structure and a small sucking disc with a groove structure. A plurality of alcohol detectors are arranged on the middle part of the inner side of the large sucking disc along the arc direction. Vacuum sucking holes are arranged on the arc-shaped pressing plate and the arc-shaped rubber plate correspondingly. The arc-shaped rubber plate of the upper sealing cover corresponds to the arc-shaped rubber plate of the lower sealing cover, and the vacuum sucking holes connect with a gas inlet of the vacuum pump through a gas pipe. The large sucking disc with the groove structure and the small sucking disc with the groove structure are firmly sucked on the gas pipelines on two sides of a weld by the sucking out of the air in the large sucking disc so as to avoid a leakage between the large and small sucking discs and a pipeline contact face, and thereby increasing a detection precision.
Description
Technical field
The present invention relates to a kind of packoff, particularly relate to a kind of packoff for gas pipeline weld seam detection.
Background technology
At present, after gas pipeline welding, all welded seal Performance Detection must be carried out, to prevent the pipe leakage after welding.In prior art, the device for detecting the pipe leakage after welding mainly contains two kinds, and one is device for detecting water tightness, and main observation weld seam position outside surface whether seepage, because device for detecting water tightness exists water intaking and drainage problem; The second adopts inflation to detect, as being filled with alcohol gas, in commissure, alcohol detector detects, once weld leakage, alcohol detector just can detect, but the seal closure adopted in this pick-up unit is mainly the seal closure that an xsect is arc, in testing process, there is certain leakage between seal closure and tube contacts face, cause detecting out of true.
Summary of the invention
For weak point of the prior art, the invention provides the more accurate packoff for gas pipeline weld seam detection of a kind of detection.
In order to solve the problems of the technologies described above, present invention employs following technical scheme:
For the packoff of gas pipeline weld seam detection, comprise seal closure, lower seal cover and vacuum pump;
Described upper seal closure and lower seal cover include arc pressuring plate, arc rubber slab and alcohol detector, and described arc rubber slab is arranged in arc pressuring plate, and the lateral surface of arc rubber slab and the medial surface of arc pressuring plate are fitted; The middle inside of described arc rubber slab arranges the large sucker of groove structure along its arcuate directions, the inner side of described arc rubber slab arranges the small sucker of groove structure near its arcuate directions of two edges; The middle inside of described large sucker arranges multiple alcohol detector along arcuate directions is uniform; Described arc pressuring plate arranges one be communicated with vacuum sucking holes outside large sucker and arc pressuring plate with corresponding on arc rubber slab; The two ends of described arc rubber slab arrange sealing baffle;
Arc rubber slab on described upper seal closure is corresponding with the arc rubber slab on lower seal cover; Described upper seal closure is all connected with the air intake opening of vacuum pump by tracheae with the vacuum sucking holes on lower seal cover.
The invention has the beneficial effects as follows: when using packoff of the present invention, upper seal closure and lower seal cover are stuck in the both sides of gas pipeline, because arranging large sucker and the small sucker of groove structure along its arcuate directions in the inner side of arc rubber slab, during use, the air in large sucker is taken away, large sucker and small sucker is made firmly to be adsorbed on the gas pipeline of weld seam both sides, avoid and leak between tube contacts face, detect more accurate.
Accompanying drawing explanation
Fig. 1 is the structural representation of the packoff for gas pipeline weld seam detection;
Fig. 2 is the cross sectional representation along A-A direction in Fig. 1.
In accompanying drawing: 1-arc pressuring plate; 2-arc rubber slab; 3-alcohol detector; 4-large sucker; 5-small sucker; 6-vacuum sucking holes; 7-sealing baffle; 8-upper seal closure; 9-lower seal cover; 10-vacuum pump; 11-tracheae.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in more detail.
As shown in Figure 1, 2, for the packoff of gas pipeline weld seam detection, comprise seal closure 8, lower seal cover 9 and vacuum pump 10.
Wherein, upper seal closure 8 and lower seal cover 9 include arc pressuring plate 1, arc rubber slab 2 and alcohol detector 3.Arc rubber slab 2 is arranged in arc pressuring plate 1, and the lateral surface of arc rubber slab 2 and the medial surface of arc pressuring plate 1 are fitted.The middle inside of arc rubber slab 2 arranges the large sucker 4 of groove structure along its arcuate directions, the inner side of arc rubber slab 2 arranges the small sucker 5 of groove structure near its arcuate directions of two edges.The middle inside of large sucker 4 arranges multiple alcohol detector 3 along arcuate directions is uniform.Arc pressuring plate 1 arranges one be communicated with vacuum sucking holes 6 outside large sucker 4 and arc pressuring plate 1 with corresponding on arc rubber slab 2.
Arc rubber slab 2 on upper seal closure 8 is corresponding with the arc rubber slab 2 on lower seal cover 9; Upper seal closure 8 is all connected by the air intake opening of tracheae 11 with vacuum pump 10 with the vacuum sucking holes 6 on lower seal cover 9.
When using packoff of the present invention, upper seal closure 8 and lower seal cover 9 are stuck in the both sides of gas pipeline, because arranging large sucker 4 and the small sucker 5 of groove structure along its arcuate directions in the inner side of arc rubber slab 2, during use, the air in large sucker 4 is taken away, large sucker 4 and small sucker 5 is made firmly to be adsorbed on the gas pipeline of weld seam both sides, avoid and leak between tube contacts face, detect more accurate.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (1)
1. for the packoff of gas pipeline weld seam detection, it is characterized in that: comprise seal closure (8), lower seal cover (9) and vacuum pump (10);
Described upper seal closure (8) and lower seal cover (9) include arc pressuring plate (1), arc rubber slab (2) and alcohol detector (3), described arc rubber slab (2) is arranged in arc pressuring plate (1), and the lateral surface of arc rubber slab (2) and the medial surface of arc pressuring plate (1) are fitted; The middle inside of described arc rubber slab (2) arranges the large sucker (4) of groove structure along its arcuate directions, the inner side of described arc rubber slab (2) arranges the small sucker (5) of groove structure near its arcuate directions of two edges; The middle inside of described large sucker (4) arranges multiple alcohol detector (3) along arcuate directions is uniform; Described arc pressuring plate (1) is upper arranges with the upper correspondence of arc rubber slab (2) vacuum sucking holes (6) that is communicated with large sucker (4) and arc pressuring plate (1) outside; The two ends of described arc rubber slab (2) arrange sealing baffle (7);
Arc rubber slab (2) on described upper seal closure (8) is corresponding with the arc rubber slab (2) on lower seal cover (9); Described upper seal closure (8) is all connected by the air intake opening of tracheae (11) with vacuum pump (10) with the vacuum sucking holes (6) on lower seal cover (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510522544.9A CN105092172A (en) | 2015-08-25 | 2015-08-25 | Sealing device for gas pipeline weld detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510522544.9A CN105092172A (en) | 2015-08-25 | 2015-08-25 | Sealing device for gas pipeline weld detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105092172A true CN105092172A (en) | 2015-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510522544.9A Pending CN105092172A (en) | 2015-08-25 | 2015-08-25 | Sealing device for gas pipeline weld detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105092172A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106338369A (en) * | 2016-10-19 | 2017-01-18 | 苏州天沃科技股份有限公司 | Tool for detecting weld between adapter and equipment cylindrical shell |
| CN106768688A (en) * | 2016-11-18 | 2017-05-31 | 北京动力机械研究所 | Leakage of seal chamber detection method based on Self-expanding gas |
-
2015
- 2015-08-25 CN CN201510522544.9A patent/CN105092172A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106338369A (en) * | 2016-10-19 | 2017-01-18 | 苏州天沃科技股份有限公司 | Tool for detecting weld between adapter and equipment cylindrical shell |
| CN106338369B (en) * | 2016-10-19 | 2019-04-12 | 张化机（苏州）重装有限公司 | The detecting tool of weld seam between adapter tube and equipment barrel |
| CN106768688A (en) * | 2016-11-18 | 2017-05-31 | 北京动力机械研究所 | Leakage of seal chamber detection method based on Self-expanding gas |
| CN106768688B (en) * | 2016-11-18 | 2019-05-21 | 北京动力机械研究所 | Leakage of seal chamber detection method based on Self-expanding gas |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151125 |
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| WD01 | Invention patent application deemed withdrawn after publication |