CN113776744A - Welding seam leakage detection device and method - Google Patents
Welding seam leakage detection device and method Download PDFInfo
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- CN113776744A CN113776744A CN202111001872.6A CN202111001872A CN113776744A CN 113776744 A CN113776744 A CN 113776744A CN 202111001872 A CN202111001872 A CN 202111001872A CN 113776744 A CN113776744 A CN 113776744A
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- welding seam
- transparent plate
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- vacuum pump
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/12—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing elastic covers or coatings, e.g. soapy water
- G01M3/14—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing elastic covers or coatings, e.g. soapy water for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
- G01M3/145—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing elastic covers or coatings, e.g. soapy water for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for welds
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- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a welding seam leakage detecting device and a welding seam leakage detecting method. The invention has simple structure, small size and light weight, is convenient to operate and transport, can quickly finish vacuumizing, can greatly improve the efficiency of vacuum leak detection of welding seams on the premise of accurate detection and reduces the labor cost.
Description
Technical Field
The invention belongs to the field of weld leakage detection, and particularly relates to a weld leakage detection device and a weld leakage detection method.
Background
The welding quality of the welding seam is directly related to the safety and stability of the equipment, and particularly the welding seam quality of the closed container is more related to the operation safety and the service life of the equipment. The existing welding seam vacuum leak detection device is large in size and heavy in weight, and although the welding quality of a welding seam can be better detected, the existing welding seam vacuum leak detection device is very heavy in transportation, and the construction efficiency is seriously influenced.
Disclosure of Invention
The invention aims to provide a welding seam leakage detecting device and a welding seam leakage detecting method, the welding seam leakage detecting device is simple in structure, small in size and light in weight, operation and transportation are convenient, vacuumizing can be rapidly completed, the welding seam vacuum leakage detecting efficiency can be greatly improved on the premise of accurate detection, and the labor cost is reduced.
The technical scheme adopted by the invention is as follows:
the utility model provides a welding seam leak hunting device, includes the transparent plate, and the sealed mounting of a side laminating of transparent plate has annular gasbag of round, another side to be equipped with valve and vacuum pump connection, and the valve is used for controlling the intercommunication of transparent plate both sides, and vacuum pump connection is used for external vacuum pump to bleed to gasbag place side, and valve and vacuum pump connection's projection position all is located the space range that the gasbag surrounded.
Furthermore, the air bag is formed by butt joint and sealing bonding of rubber sponge pipes end to end.
Further, the air bag is fixed on the transparent plate in an adhesive manner.
Further, the transparent plate is made of organic glass.
Further, the size of the transparent plate was 800mm by 400mm by 6 mm.
Furthermore, the valve and the vacuum pump joint are respectively fixed on the mounting hole of the transparent plate in an adhering way.
A welding seam leakage detecting method comprises the steps of brushing soapy water on a welding seam to be detected, placing the device on the surface where the welding seam to be detected is located, enabling an air bag to be tightly attached to the surface where the welding seam to be detected is located and surrounding the welding seam to be detected, closing a valve, enabling a vacuum pump connector to be externally connected with the vacuum pump, starting the vacuum pump to vacuumize a space formed by a transparent plate, the air bag and the surface where the welding seam to be detected is located, keeping constant pressure when the vacuum degree is proper, directly observing whether the welding seam to be detected is foamed through the transparent plate, judging whether the welding seam is not gas-tight if the welding seam is not foamed, opening the valve, moving the device to the next section of the welding seam to be detected to continuously detect leakage, judging whether the welding seam is gas-tight if the welding seam is foamed or not, and detecting the leakage again after the welding seam is repaired.
Further, the constant pressure is maintained for at least 10s while observing whether the weld to be detected is foamed.
The invention has the beneficial effects that:
the invention has simple structure, small size and light weight, is convenient to operate and transport, can quickly finish vacuumizing, can greatly improve the efficiency of vacuum leak detection of welding seams on the premise of accurate detection and reduces the labor cost.
Drawings
FIG. 1 is a schematic diagram of the operation of a weld leak detection apparatus in an embodiment of the invention.
In the figure: 1-air bag; 2-a transparent plate; 3-a valve; 4-vacuum pump connection; 5-welding seams.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in figure 1, a welding seam leakage detecting device comprises a transparent plate 2, wherein a circle of annular air bag 1 is arranged on one side surface of the transparent plate 2 in a sealing mode, a valve 3 and a vacuum pump connector 4 are arranged on the other side surface of the transparent plate, the valve 3 is used for controlling the communication of the two sides of the transparent plate 2, the vacuum pump connector 4 is used for pumping air to the side of the air bag 1 after being externally connected with a vacuum pump, and the projection positions of the valve 3 and the vacuum pump connector 4 are both located in the space range surrounded by the air bag 1.
In the embodiment, the air bag 1 is formed by butt joint and sealing bonding of rubber sponge pipes end to end, has good toughness and air tightness, and has good toughness during vacuum pumping; the air bag 1 is fixed on the transparent plate 2 by bonding; the transparent plate 2 is made of organic glass and has better strength and toughness; the size of the transparent plate 2 is set according to actual requirements, and 800mm x 400mm x 6mm is selected; the valve 3 and the vacuum pump joint 4 are respectively fixed on the mounting hole of the transparent plate 2 in an adhering way.
A welding seam leakage detecting method adopts the welding seam leakage detecting device, firstly, welding to be detected is carried out: 5, brushing the soapy water on the brush body, then the device is placed on the surface of the welding line 5 to be detected, the air bag 1 is tightly attached to the surface of the welding line 5 to be detected and surrounds the welding line 5 to be detected, the valve 3 is closed, the vacuum pump joint 4 is externally connected with a vacuum pump, then starting a vacuum pump to vacuumize the space formed by the surfaces of the transparent plate 2, the air bag 1 and the welding seam 5 to be detected, keeping constant pressure when the vacuum degree is proper (keeping constant pressure for at least 10s when observing whether the welding seam 5 to be detected is foamed or not), whether the welding seam 5 to be detected is foamed or not is directly observed through the transparent plate 2, if the welding seam 5 is not foamed, the welding seam 5 is judged to be airtight, the valve 3 is opened, the device is moved to the next section of the welding seam 5 to be detected to continue leakage detection, if the welding seam is foamed, the welding seam 5 is judged to be airtight, and the leakage detection is needed to be performed again after repair welding.
The vacuum leak detection device is simple in structure, small in size and light in weight, is convenient to operate and transport, can quickly complete vacuum pumping, can greatly improve the vacuum leak detection efficiency of the welding line 5 on the premise of accurate detection, and reduces the labor cost.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (8)
1. A welding seam leakage detection device is characterized in that: including the transparent plate, the sealed mounting of a side laminating of transparent plate has annular gasbag of round, another side is equipped with valve and vacuum pump connection, and the valve is used for controlling the intercommunication of transparent plate both sides, and vacuum pump connection is used for external vacuum pump to bleed to gasbag place side, and valve and vacuum pump connection's projection position all is located the space range that the gasbag surrounded.
2. The weld leak detection apparatus according to claim 1, wherein: the air bag is formed by butt joint and sealing bonding of rubber sponge pipes end to end.
3. The weld leak detection apparatus according to claim 1, wherein: the air bag is adhered and fixed on the transparent plate.
4. The weld leak detection apparatus according to claim 3, wherein: the transparent plate is made of organic glass.
5. The weld leak detection apparatus according to claim 1, wherein: the size of the transparent plate was 800mm 400mm 6 mm.
6. The weld leak detection apparatus according to claim 1, wherein: the valve and the vacuum pump joint are respectively fixed on the mounting hole of the transparent plate in an adhering way.
7. A welding seam leakage detection method is characterized in that: a welding seam leakage detecting device as claimed in any one of claims 1 to 6 is adopted, firstly soapy water is brushed on a welding seam to be detected, then the device is placed on the surface where the welding seam to be detected is located, an air bag is tightly attached to the surface where the welding seam to be detected is located, the welding seam to be detected is surrounded, a valve is closed, a vacuum pump is externally connected with a vacuum pump connector, then the vacuum pump is started to vacuumize a space formed by a transparent plate, the air bag and the surface where the welding seam to be detected is located, constant pressure is kept when the vacuum degree is proper, whether the welding seam to be detected is foamed or not is directly observed through the transparent plate, if the welding seam is not foamed, the welding seam leakage is judged, if the welding seam leakage is detected again, repair welding is needed, and leakage detection is carried out again after repair welding.
8. The weld leak detection method according to claim 1, wherein: and (5) observing whether the welding line to be detected is foamed or not, and keeping constant pressure for at least 10 s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111001872.6A CN113776744A (en) | 2021-08-30 | 2021-08-30 | Welding seam leakage detection device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111001872.6A CN113776744A (en) | 2021-08-30 | 2021-08-30 | Welding seam leakage detection device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113776744A true CN113776744A (en) | 2021-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111001872.6A Pending CN113776744A (en) | 2021-08-30 | 2021-08-30 | Welding seam leakage detection device and method |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4002055A (en) * | 1972-02-18 | 1977-01-11 | Dynamit Nobel Aktiengesellschaft | Process and apparatus for testing the tightness of seam joints of synthetic resin sheets by means of vacuum |
| CN103852223A (en) * | 2013-08-26 | 2014-06-11 | 洛阳瑞泽石化工程有限公司 | Circular vacuum box for tank bottom welding line leakage testing |
| CN104535273A (en) * | 2014-11-24 | 2015-04-22 | 中国核工业二三建设有限公司 | Tool for vacuum leak detection |
| CN205580692U (en) * | 2016-03-04 | 2016-09-14 | 中国石油集团渤海钻探工程有限公司 | T type welding seam vacuum test ware |
| CN205580686U (en) * | 2016-03-29 | 2016-09-14 | 中国海洋石油总公司 | Liquefied natural gas storage tank anchor area erection weld's vacuum leak hunting box |
| CN205888404U (en) * | 2016-08-19 | 2017-01-18 | 中国化学工程第三建设有限公司 | Right angle welding seam check out test set |
| CN108332917A (en) * | 2017-12-08 | 2018-07-27 | 西安飞机工业（集团）有限责任公司 | A kind of method of composite material type plate welding seams air leakage point detection |
| CN109883618A (en) * | 2019-04-16 | 2019-06-14 | 中国五冶集团有限公司 | Groove tank bottom plate leak test vacuum box structure and test method |
-
2021
- 2021-08-30 CN CN202111001872.6A patent/CN113776744A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4002055A (en) * | 1972-02-18 | 1977-01-11 | Dynamit Nobel Aktiengesellschaft | Process and apparatus for testing the tightness of seam joints of synthetic resin sheets by means of vacuum |
| CN103852223A (en) * | 2013-08-26 | 2014-06-11 | 洛阳瑞泽石化工程有限公司 | Circular vacuum box for tank bottom welding line leakage testing |
| CN104535273A (en) * | 2014-11-24 | 2015-04-22 | 中国核工业二三建设有限公司 | Tool for vacuum leak detection |
| CN205580692U (en) * | 2016-03-04 | 2016-09-14 | 中国石油集团渤海钻探工程有限公司 | T type welding seam vacuum test ware |
| CN205580686U (en) * | 2016-03-29 | 2016-09-14 | 中国海洋石油总公司 | Liquefied natural gas storage tank anchor area erection weld's vacuum leak hunting box |
| CN205888404U (en) * | 2016-08-19 | 2017-01-18 | 中国化学工程第三建设有限公司 | Right angle welding seam check out test set |
| CN108332917A (en) * | 2017-12-08 | 2018-07-27 | 西安飞机工业（集团）有限责任公司 | A kind of method of composite material type plate welding seams air leakage point detection |
| CN109883618A (en) * | 2019-04-16 | 2019-06-14 | 中国五冶集团有限公司 | Groove tank bottom plate leak test vacuum box structure and test method |
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