CN108953809B - The method comprises the following steps of: for leakage quick connector for detection - Google Patents
The method comprises the following steps of: for leakage quick connector for detection Download PDFInfo
- Publication number
- CN108953809B CN108953809B CN201811043580.7A CN201811043580A CN108953809B CN 108953809 B CN108953809 B CN 108953809B CN 201811043580 A CN201811043580 A CN 201811043580A CN 108953809 B CN108953809 B CN 108953809B
- Authority
- CN
- China
- Prior art keywords
- piston
- clamping block
- quick connector
- connector
- leak detection
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000001514 detection method Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims description 3
- 238000009423 ventilation Methods 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims description 14
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- F16L37/00—Couplings of the quick-acting type
- F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
- F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The utility model relates to a quick connector for leak detection, which comprises a connector main body internally provided with a containing cavity, wherein one end of the connector main body is provided with an air inlet connector; a locking part is arranged in the accommodating cavity, and a ventilation channel is communicated between the locking part and the air inlet joint; the locking part is in a locking state through air pressure backflow in the accommodating cavity. The utility model has the beneficial effects that: the quick connector can directly introduce gas from the pipe fitting when the pipe fitting is subjected to leakage detection, the pipe fitting is locked by utilizing air pressure backflow, the structure is simple, the operation is convenient, and the possibility of gas leakage of the gas inlet end is eliminated.
Description
Technical Field
The utility model relates to a quick connector for a pipeline, in particular to a quick connector for detecting gas leakage.
Background
In practical production, when the pipeline needs to be leak-detected by filling gas and then filling water or stored by filling gas under pressure, a quick connector is usually needed. In particular, in the field of air conditioners, refrigerators, and the like, which are home appliances, it is necessary to fill liquid, gas, and the like into the products as functional components, and therefore it is necessary to leak the components, connect a pipe to an inflator by a quick joint, and inflate the pipe to detect the leak. In the prior art, a hand-operated quick connector is generally used, an inserted pipe fitting is opened by pulling a handle, and then the handle is pulled to compress the pipe fitting for detection. When the handle presses the pipe fitting, the quick connector cannot judge whether the pipe fitting is pressed in place, and if the pipe fitting is not pressed in place, air leakage or abrupt detachment can occur in the process of continuously increasing air pressure, so that the danger is extremely high.
Chinese patent specification CN206770841U discloses an automatic quick connector for leak detection. The automatic quick connector is a quick connector with double connectors, the pipe fitting is sleeved into the locking connector to be compressed, then gas is filled into the air inlet connector, and meanwhile, the gas acts on the clamping block in the filling process, so that the stronger the clamping block is used for locking the pipe fitting, and the situation that the pipe fitting is suddenly separated when the gas pressure is larger is avoided.
However, when the automatic quick connector is used, gas can only be filled from the air inlet connector, and whether the pipe fitting leaks or the air inlet end leaks cannot be judged; if gas is filled from the locking joint, the joint is damaged, and the structure of the pneumatic joint is complicated.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model provides the automatic quick connector for the leakage detection, which has good locking effect and simple structure.
The technical scheme for solving the technical problems is as follows:
the quick connector for leakage detection comprises a connector main body provided with a containing cavity, wherein one end of the connector main body is provided with an air inlet connector; a locking part is arranged in the accommodating cavity, and a ventilation channel is communicated between the locking part and the air inlet joint; the locking part is in a locking state through air pressure backflow in the accommodating cavity.
Further, the locking part comprises a piston connected with the air inlet joint and provided with an air inlet channel in the middle, a plurality of clamping blocks circumferentially distributed on the outer side of the air inlet joint and a clamping block mounting seat; the piston is movably arranged in the accommodating cavity; a gap is arranged between the lower part of the piston and the inner wall of the joint main body.
Further, the joint body includes a housing and a mounting cover disposed over the housing; the clamp splice is connected between the installation cover and the clamp splice installation seat through the inclined plane.
Further, the upper part of the piston is provided with a connecting part protruding in a step shape, the shell is hinged with a handle, and the inner surface of the shell is in abutting connection with the connecting part on the piston.
Further, the outer surfaces of the upper end and the lower end of the clamping block are provided with clamping block inclined planes, the inner surface of the upper end of the mounting cover is provided with a first inclined plane, the upper end of the clamping block mounting seat is provided with a second inclined plane, and the clamping block inclined planes are respectively in abutting connection with the first inclined plane and the second inclined plane.
Further, the inner surface of one side of the shell is provided with a platform part, the platform part is provided with a piston spring, and the upper end of the piston spring is in abutting connection with the connecting part of the piston.
Preferably, the inner surface of the clamping block mounting seat is provided with a bulge, a first O-shaped ring is arranged below the bulge, and the top of the piston is in abutting connection with the first O-shaped ring.
Preferably, a spring groove is formed in the side face of each clamping block, a telescopic spring is arranged in each spring groove, and adjacent clamping blocks are connected through the telescopic springs.
Preferably, an annular groove is formed in the outer surface of the piston, and a second O-shaped ring is arranged in the annular groove.
The pipe fitting is inserted between the clamping blocks and the locking space formed by the ventilation piston.
When not operated, the clamp splice is gathered together by clamp splice mount pad and installation lid and locks, and the pipe fitting can't insert. When the detection is needed, the handle is pressed, the contact between the shell and the mounting cover is loosened, meanwhile, the clamping blocks are pressed by the clamping block mounting seat to be loosened, the clamping blocks are separated from each other respectively, the pipe fitting is inserted, and the pipe fitting is inserted into the lower part of the O-shaped ring above the piston. Releasing the handle, compressing the installation cover by the shell, extruding the clamping block and the clamping block installation seat by the installation cover, extruding the clamping block by the clamping block installation seat, and locking the pipe fitting by the clamping block under two extrusion forces. And gas is introduced from the pipe fitting, and enters the accommodating cavity of the joint main body through the synchronous channels. When the containing cavity is filled with enough gas, ventilation is continued, the gas moves upwards through a gap between the piston and the inner wall of the shell, and the upward-moving backflow gas generates thrust on the piston. When the piston is forced to move, the clamping block mounting seat is extruded, the clamping block mounting seat is pushed by the piston, and the clamping block is pushed to gather and lock the pipe fitting through the first inclined plane. The expansion ring between the piston and the clamping block mounting seat is used for sealing the side part of the pipe fitting under the extrusion action, and the first O-shaped ring in the clamping block is used for sealing the side part of the pipe fitting under the extrusion action.
The utility model has the beneficial effects that: the quick connector can directly introduce gas from the pipe fitting when the pipe fitting is subjected to leakage detection, the pipe fitting is locked by utilizing air pressure backflow, the structure is simple, the operation is convenient, and the possibility of gas leakage of the gas inlet end is eliminated.
Drawings
Fig. 1 is a schematic cross-sectional view of the present utility model.
Fig. 2 is a schematic view of a partially cut-away structure of the present utility model.
The drawings are marked: 1. the mounting cover, 2, the clamp splice, 3, the extension spring, 4, the clamp splice mount pad, 5, first O type circle, 6, casing, 7, handle, 8, piston spring, 9, second O type circle, 10, piston, 11, first inclined plane, 12, second inclined plane, 13, connecting portion, 14, clamp splice inclined plane.
Detailed Description
The utility model is described in further detail below with reference to the drawings and the detailed description.
As shown in fig. 1 and 2, a quick connector for leak detection comprises a connector main body with a containing cavity therein, wherein one end of the connector main body is provided with an air inlet connector; a locking part is arranged in the accommodating cavity, and a ventilation channel is communicated between the locking part and the air inlet joint; the locking part is in a locking state through air pressure backflow in the accommodating cavity. The locking part comprises a piston 10 connected with an air inlet joint and provided with an air channel in the middle, a plurality of clamping blocks 2 circumferentially distributed on the outer side of the air inlet joint and a clamping block mounting seat 4; the piston 10 is movably arranged in the accommodating cavity; the lower part of the piston 10 is connected with the a gap is arranged between the inner walls of the joint main body.
In this embodiment, the joint body includes a housing 6 and a mounting cover 1 provided above the housing 6; the outer surfaces of the upper end and the lower end of the clamping block 2 are provided with clamping block inclined planes 14, the inner surface of the upper end of the mounting cover 1 is provided with a first inclined plane 11, the upper end of the clamping block mounting seat is provided with a second inclined plane 12, and the clamping block inclined planes 14 are respectively in abutting connection with the first inclined plane 11 and the second inclined plane 12. The clamping block 2 is connected between the mounting cover 1 and the clamping block mounting seat 4 in an inclined plane.
In this embodiment, a connecting portion 13 protruding in a stepped manner is provided at the upper portion of the piston 10, the housing is hinged with the handle 7, and the housing 6 is in abutting connection with the connecting portion 13 on the piston 10. The inner surface of one side of the shell 6 is provided with a platform part, the platform part is provided with a piston spring 8, and the upper end of the piston spring 8 is in abutting connection with a connecting part 13 of the piston 10.
In this embodiment, the inner surface of the clamping block mounting seat 4 is provided with a protrusion, a first O-ring 5 is arranged below the protrusion, and the top of the piston 10 is in abutting connection with the first O-ring 5.
In this embodiment, the side of the clamping block 2 is provided with a spring groove, the spring groove is internally provided with a telescopic spring 3, and adjacent clamping blocks are connected through the telescopic spring.
In this embodiment, an annular groove is formed on the outer surface of the piston 10, and a second O-ring 9 is disposed in the annular groove.
The pipe fitting is inserted between the clamping blocks and the locking space formed by the ventilation piston.
When not operated, the clamp splice is gathered together by clamp splice mount pad and installation lid and locks, and the pipe fitting can't insert. When the detection is needed, the handle is pressed, the contact between the shell and the mounting cover is loosened, meanwhile, the clamping blocks are pressed by the clamping block mounting seat to be loosened, the clamping blocks are separated from each other respectively, the pipe fitting is inserted, and the pipe fitting is inserted into the lower part of the O-shaped ring above the piston. Releasing the handle, compressing the installation cover by the shell, extruding the clamping block and the clamping block installation seat by the installation cover, extruding the clamping block by the clamping block installation seat, and locking the pipe fitting by the clamping block under two extrusion forces. And gas is introduced from the pipe fitting, and enters the accommodating cavity of the joint main body through the synchronous channels. When the containing cavity is filled with enough gas, ventilation is continued, and the gas moves upwards through a gap between the piston and the inner wall of the shell, so that thrust is generated on the piston. When the piston is forced to move, the clamping block mounting seat is extruded, the clamping block mounting seat is pushed by the piston, and the clamping block is pushed to gather and lock the pipe fitting through the first inclined plane. The expansion ring between the piston and the clamping block mounting seat is used for sealing the side part of the pipe fitting under the extrusion action, and the first O-shaped ring in the clamping block is used for sealing the side part of the pipe fitting under the extrusion action.
The advantage of this embodiment lies in that this quick-operation joint can directly follow pipe fitting and let in gas when leaking the detection to the pipe fitting, utilizes atmospheric pressure backward flow locking pipe fitting, simple structure, convenient operation has got rid of the possibility that the inlet end leaked gas simultaneously.
The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model should be included in the scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.
Claims (8)
1. The quick connector for leakage detection comprises a connector main body provided with a containing cavity, wherein one end of the connector main body is provided with an air inlet connector; the method is characterized in that: a locking part is arranged in the accommodating cavity, and a ventilation channel is communicated between the locking part and the air inlet joint; the locking part realizes a locking state through air pressure backflow in the accommodating cavity;
the locking part comprises a piston connected with the air inlet joint and provided with an air passage in the middle, a plurality of clamping blocks circumferentially distributed on the outer side of the air inlet joint and a clamping block mounting seat; the piston is movably arranged in the accommodating cavity; a gap is arranged between the lower part of the piston and the inner wall of the joint main body.
2. The quick connector for leak detection of claim 1, wherein: the connector body comprises a shell and a mounting cover arranged above the shell; the clamp splice is connected between the installation cover and the clamp splice installation seat through the clamp splice inclined plane.
3. The quick connector for leak detection of claim 2, wherein: the upper part of the piston is provided with a connecting part protruding in a stepped manner, the shell is hinged with a handle, and the inner surface of the shell is in abutting connection with the connecting part on the piston.
4. A quick connector for leak detection according to claim 2 or 3, characterized in that: the upper end and the lower end of the clamping block are respectively provided with a clamping block inclined surface, the inner surface of the upper end of the mounting cover is provided with a first inclined surface, the upper end of the clamping block mounting seat is provided with a second inclined surface, and the clamping block inclined surfaces are respectively in abutting connection with the first inclined surface and the second inclined surface.
5. The quick connector for leak detection of claim 2, wherein: the inner surface of one side of the shell is provided with a platform part, the platform part is provided with a piston spring, and the upper end of the piston spring is in abutting connection with the connecting part of the piston.
6. A quick connector for leak detection as defined in claim 2 or 5, wherein: the inside surface of the clamp splice mount pad is provided with a bulge, a first O-shaped ring is arranged below the bulge, and the top of the piston is in abutting connection with the first O-shaped ring.
7. A quick connector for leak detection as defined in claim 2 or 5, wherein: the side of the clamping block is provided with a spring groove, a telescopic spring is arranged in the spring groove, and adjacent clamping blocks are connected through the telescopic spring.
8. The quick connector for leak detection of claim 2, wherein: the piston surface is equipped with the annular groove, be equipped with the second O type circle in the annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811043580.7A CN108953809B (en) | 2018-09-07 | 2018-09-07 | The method comprises the following steps of: for leakage quick connector for detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811043580.7A CN108953809B (en) | 2018-09-07 | 2018-09-07 | The method comprises the following steps of: for leakage quick connector for detection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108953809A CN108953809A (en) | 2018-12-07 |
| CN108953809B true CN108953809B (en) | 2024-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811043580.7A Active CN108953809B (en) | 2018-09-07 | 2018-09-07 | The method comprises the following steps of: for leakage quick connector for detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108953809B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110464433B (en) * | 2019-09-23 | 2021-09-17 | 常州安康医疗器械有限公司 | Cardiovascular intervention puncture outfit with blood coagulation function |
| CN112096992A (en) * | 2020-09-01 | 2020-12-18 | 格力电器（武汉）有限公司 | Quick-operation joint and have its connection structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202562710U (en) * | 2012-04-18 | 2012-11-28 | 乌海市三德暖通空调设备有限公司 | Leak-check sealing device of tubular product |
| CN202901648U (en) * | 2012-09-26 | 2013-04-24 | 惠城区众益五金制品加工厂 | Water-measurement airtight connector special for compressor |
| KR20170024236A (en) * | 2015-08-25 | 2017-03-07 | 황철주 | Jig for water pressure test |
| CN206770841U (en) * | 2017-05-13 | 2017-12-19 | 王利军 | A kind of automatic snap joint for leak detection |
| CN209130355U (en) * | 2018-09-07 | 2019-07-19 | 王利军 | A kind of quick coupling for leak detection |
-
2018
- 2018-09-07 CN CN201811043580.7A patent/CN108953809B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202562710U (en) * | 2012-04-18 | 2012-11-28 | 乌海市三德暖通空调设备有限公司 | Leak-check sealing device of tubular product |
| CN202901648U (en) * | 2012-09-26 | 2013-04-24 | 惠城区众益五金制品加工厂 | Water-measurement airtight connector special for compressor |
| KR20170024236A (en) * | 2015-08-25 | 2017-03-07 | 황철주 | Jig for water pressure test |
| CN206770841U (en) * | 2017-05-13 | 2017-12-19 | 王利军 | A kind of automatic snap joint for leak detection |
| CN209130355U (en) * | 2018-09-07 | 2019-07-19 | 王利军 | A kind of quick coupling for leak detection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108953809A (en) | 2018-12-07 |
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