CN215726579U - Plugging device for air tightness detection of thin-wall part - Google Patents
Plugging device for air tightness detection of thin-wall part Download PDFInfo
- Publication number
- CN215726579U CN215726579U CN202122102221.8U CN202122102221U CN215726579U CN 215726579 U CN215726579 U CN 215726579U CN 202122102221 U CN202122102221 U CN 202122102221U CN 215726579 U CN215726579 U CN 215726579U
- Authority
- CN
- China
- Prior art keywords
- rubber ring
- pull rod
- hole
- inflation
- plugging
- Prior art date
- 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.)
- Active
Links
Images
Landscapes
- Pipe Accessories (AREA)
Abstract
The utility model provides a plugging device for air tightness detection of thin-walled pieces, which comprises an installation plate, two groups of plugging units and an eccentric handle, wherein the two groups of plugging units are installed on the installation plate; the expansion rubber ring is sleeved on the pull rod extending out of the inflatable block and is in a long tube shape, and the expansion rubber ring is clamped between the end face of the front end of the inflatable block and the limiting stop shoulder part at the front end of the pull rod; the plugging rubber ring is sleeved on the rear part of the expansion rubber ring and is abutted against the front end face of the inflatable block; the tight rubber ring that expands can be compressed deformation and forms the inside tight spacing portion of clamp to the piece gas pocket department inner wall of being surveyed, pastes the shutoff rubber ring and the inflation piece front end terminal surface that support the gas pocket outer wall and forms the tight spacing portion of outside clamp jointly, and the tight pore wall of inside, outside clamp cooperation clamp jointly to guarantee the relative fixation of whole shutoff unit and the piece of being surveyed at the inflation in-process.
Description
Technical Field
The utility model belongs to the field of quick connectors for air tightness detection, and particularly relates to a device for quickly connecting and plugging a thin-wall hole on a tested piece.
Background
With the development of new energy battery industry, novel battery cases gradually develop towards light weight and exquisite structure. The inflation inlet of the existing novel battery pack is of a thin-wall structure, and is required to be plugged and subjected to inflation test. The applicant has disclosed in chinese patent CN110735923A a high-pressure thin-walled hole quick connector, which can realize quick connection with a test piece, and after the connection is completed, a test fluid can enter the test piece through an inflation head of the connector, thereby detecting whether a leakage exists in the test piece. The connector is complex in structure and high in manufacturing cost, and only one air hole can be plugged.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a plugging device for detecting air tightness of a thin-wall part, which specifically comprises:
a plugging device for airtight detection of thin wall spare, including the mounting panel with install two shutoff units on the mounting panel side by side to and eccentric handle, still install two proximity switches on the mounting panel, one of them proximity switch is located the center department between two shutoff units, another proximity switch then is located the corner department that the mounting panel is located outside two shutoff units.
Each plugging unit comprises an inflatable block, a pull rod, a connecting shaft, a tensioning rubber ring and a plugging rubber ring;
the inflatable block is provided with a central through hole, the central through hole is a step hole consisting of a small-diameter hole section at the front part and a large-diameter hole section at the rear part, and the front part of the inflatable block where the small-diameter hole section is located is vertically inserted and fixed on the mounting plate;
the pull rod and the connecting shaft are coaxially and sequentially fixedly connected, the diameter of the rod body of the pull rod is matched with the diameter of a hole of a small-diameter hole section of a central through hole of the inflatable block, the diameter of the connecting shaft is matched with the diameter of a hole of a large-diameter hole section, the rod body of the pull rod is inserted into the small-diameter hole section, and sliding sealing is realized through a front sealing ring between the pull rod and the small-diameter hole section; the connecting shaft is inserted into the large-diameter hole section, and sliding sealing is realized through a rear sealing ring between the connecting shaft and the large-diameter hole section;
the expansion rubber ring is sleeved on the pull rod extending out of the inflatable block and is in a long tube shape, the rear end of the expansion rubber ring is abutted against the front end face of the inflatable block, and the front end of the expansion rubber ring is abutted against a limiting stop shoulder part which is arranged at the front end of the pull rod and extends outwards along the radial direction;
the plugging rubber ring is sleeved on the rear part of the expansion rubber ring, is in interference fit with the expansion rubber ring, and abuts against the front end face of the inflatable block;
the length of the expansion rubber ring is enough that the part of the expansion rubber ring positioned in the measured piece has enough length for being compressed and deformed to form an internal clamping limiting part on the inner wall of the air hole of the measured piece, the plugging rubber ring attached to the outer wall of the air hole and the front end face of the inflatable block jointly form an external clamping limiting part, and the internal clamping limiting part and the external clamping limiting part jointly cooperate with a clamping hole wall, so that the relative fixation of the whole plugging unit and the measured piece is ensured in the inflation process;
the rear part of the connecting shaft body is exposed out of the rear end of the inflatable block, the rear end of the shaft body is hinged with a corresponding eccentric wheel part on the eccentric handle through a pin shaft, and the eccentric wheel part is abutted against the end surface of the rear end of the inflatable block.
An annular cavity is formed between the rear part of the pull rod and the large-diameter hole section, the pull rod is provided with an inflation channel, one end opening of the inflation channel is positioned on the front end face of the pull rod, and the other end opening of the inflation channel is arranged on the rod body positioned in the large-diameter hole section, namely the inflation channel is communicated with the annular cavity in the large-diameter hole section; the side wall of the inflation block is also provided with an inflation connecting hole which is used for connecting an inflation pipeline connecting piece and is communicated with the annular cavity in the large-diameter hole section, namely the inflation connecting hole is communicated with the inflation channel through the annular cavity.
The rear end of the inflation block is in threaded connection with a rear end cover and a locking ring, and the end face of the rear end cover serves as the rear end face of the inflation block to be abutted against the corresponding eccentric wheel part on the eccentric handle; the rear end cover and the locking ring form a double-spiral structure, so that the effective length of the central through hole of the inflatable block is adjusted and locked, and the compression amount of the expansion rubber ring is adjusted.
The front part of the inflatable block with the small diameter hole section is vertically inserted into the mounting through hole on the mounting plate, the mounting plate is also provided with a jackscrew hole which is vertically communicated with the corresponding mounting through hole, and the inflatable block is fixed with the mounting plate by a fastening bolt which is screwed in the jackscrew hole.
The limiting shoulder blocking part is formed by a shoulder blocking ring which extends outwards from the rod body at the front end of the pull rod.
The limiting shoulder blocking part comprises a shoulder blocking ring extending outwards from the body of the pull rod at the front end of the pull rod and a shoulder blocking backing ring sleeved on the pull rod and additionally arranged between the shoulder blocking ring and the expansion rubber ring.
The plugging device greatly simplifies the structure and reduces the manufacturing cost.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a schematic perspective view of an occlusion device of the present invention;
FIG. 2 is a schematic view of the combination of the plugging device and the test piece;
FIG. 3 is a schematic sectional view taken along line A-A in FIG. 2;
fig. 4 is a schematic sectional view taken along line B-B in fig. 2.
The main reference symbols in the figures are: 1-a terminal hole; 2-a proximity switch; 3-a pin shaft; 4-an eccentric handle; 5-an inflation block; 6, mounting a plate; 7-a pull rod; 8-rear sealing ring; 9-a connecting shaft; 10-a pin shaft; 11-an inflation head; 12-front sealing ring, 13-plugging rubber ring; 14-an inflation channel; 15-expanding the rubber ring; 16-the piece under test.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in the drawings, the plugging device of the present invention is exemplified by two air holes capable of simultaneously plugging the tested piece 16, two plugging units are arranged side by side on the mounting plate 6, and each plugging unit is responsible for plugging one air hole.
Each plugging unit comprises an inflation block 5, a pull rod 7, a connecting shaft 9, a tensioning rubber ring 15 and a plugging rubber ring 13.
The center of the inflation block 5 is provided with a center through hole, the center through hole is a step hole consisting of a small-diameter hole section 51 at the front part and a large-diameter hole section 52 at the rear part, the front part of the inflation block 5 where the small-diameter hole section 51 is located is vertically inserted into the installation through hole of the installation plate 6, the jackscrew hole 1 is communicated with the installation through hole, and the inflation block 5 is fixed with the installation plate 6 by a fastening bolt (not shown) screwed in the jackscrew hole 1.
The pull rod 7 and the connecting shaft 9 are coaxially and sequentially fixedly connected, the diameter of the rod body of the pull rod 7 is matched with the hole diameter of the small-diameter hole section 51 of the central through hole of the inflatable block 6, the diameter of the connecting shaft 9 is matched with the hole diameter of the large-diameter hole section 52, the rod body of the pull rod 7 is inserted into the small-diameter hole section 51, and sliding sealing is realized through the front sealing ring 12 between the pull rod and the small-diameter hole section; the coupling shaft 9 is inserted into the large-diameter hole section 52 and is slidably sealed by the rear seal ring 8 therebetween. The small-diameter hole section 51 serves as a slide guide hole for the tie rod 7, and the large-diameter hole section 52 serves as a slide guide hole for the connecting shaft 9.
The front part of the pull rod 7 extends out of the front end of the inflatable block, the expansion rubber ring 15 is sleeved on the pull rod 7 extending out of the inflatable block 5, the expansion rubber ring 15 is in a long tube shape, the rear end of the expansion rubber ring 15 is abutted against the front end face of the inflatable block 5, and the front end of the expansion rubber ring 15 is abutted against a limiting stop shoulder part which is arranged at the front end of the pull rod 7 and extends outwards along the radial direction. The limit stop shoulder can be a stop shoulder ring 71 extending outwards from the front end of the pull rod 7. In order to be suitable for replacing the expansion rubber rings 15 with different outer diameter sizes due to different sizes of air holes of a measured piece, a shoulder blocking backing ring 72 sleeved on the pull rod 7 can be additionally arranged between the shoulder blocking ring 71 and the expansion rubber ring 15, and the shoulder blocking backing ring 72 can be replaced according to different expansion rubber rings 15 without replacing the whole pull rod 7.
The plugging rubber ring 13 is sleeved on the rear part of the expansion rubber ring 15, and the plugging rubber ring 13 and the expansion rubber ring 15 are in interference fit, namely the plugging rubber ring 13 clamps the rear part of the expansion rubber ring 15 by elastic hooping of the plugging rubber ring 13, and the plugging rubber ring 13 abuts against the front end face of the inflatable block 5.
The length of the expansion rubber ring 15 is at least more than three times of the thickness of the hole wall of the measured piece, so that the part of the expansion rubber ring in the measured piece has enough length for being compressed and deformed to clamp a limiting part on the inner wall of the air hole of the measured piece, the plugging rubber ring 13 attached to the outer wall of the air hole and the front end face of the inflating block 5 jointly form an external clamping limiting part, and the internal and external clamping limiting parts are matched with the clamping hole wall jointly, so that the relative fixation of the whole plugging unit and the measured piece 6 is ensured in the inflating process.
The rear part of the shaft body of the connecting shaft 9 is exposed out of the rear end of the inflatable block 5, the rear end of the shaft body is hinged with a corresponding eccentric wheel part on the eccentric handle 4 through a pin shaft 10, and the eccentric wheel part is abutted against the end surface of the rear end of the inflatable block 5.
Since the hole diameter of the large-diameter hole section 52 is larger than the rod diameter of the pull rod 7, and the rear part of the pull rod 7 from the fixed connection part with the connecting shaft 9 is positioned in the large-diameter hole section 52, an annular cavity is formed between the pull rod 7 and the large-diameter hole section 52.
The pull rod 7 is provided with an inflation channel 14, one end opening of the inflation channel 14 is positioned on the front end face of the pull rod 7, and the other end opening of the inflation channel 14 is arranged on the rod body of the large-diameter hole section 52 of the inflation block 5, namely the inflation channel 14 is communicated with the annular cavity in the large-diameter hole section 52; the side wall of the inflation block 5 is further provided with an inflation connection hole 53 for connecting an inflation pipeline connector and communicated with the annular cavity in the large-diameter hole section 52, namely, the inflation connection hole 53 is also communicated with the inflation channel 14 through the annular cavity.
In order to adjust the compression amount of the expansion rubber ring 15, the rear end of the inflation block 5 is in threaded connection with a rear end cover 55 and a locking ring 54, and the end surface of the rear end cover 55 serves as the rear end surface of the inflation block 5 to abut against the corresponding eccentric wheel part on the eccentric handle 4. The rear end cover 55 and the locking ring 54 form a double-spiral structure, so that the effective length of the central through hole of the inflation block 5 is adjusted and locked, and the compression amount of the expansion rubber ring 15 is adjusted.
Still install two proximity switches 2 on the mounting panel 6, connect as the frock and target in place and detect, can effectively avoid connecting the detection data that bad caused unusually, prevent that false retrieval, false retrieval from taking place. Preferably, one of the proximity switches is located at the center between the two plugging units, and the other proximity switch is located at the corner of the mounting plate outside the two plugging units, so as to achieve better detection.
The working principle is as follows: during connection, firstly, an inflation head 11 of the plugging device is inserted into an air hole corresponding to a tested piece 16, and two proximity switches 2 simultaneously detect signals in place to allow testing; fastening, pulling the eccentric handle 4 to drive the connecting shaft 9 and the pull rod 7 to move towards the tensioning direction, expanding the expansion rubber ring 15 to expand the thin-walled part, compressing the plugging sealing ring 13 to be tightly attached to the outer surface of the measured part 16 to form sealing connection, and keeping the locking of the inflation head and the measured part; inflating and testing, namely, a testing pressure medium enters the thin-wall part from the inflating block 5 through the inflating channel 14, and the leakage test is carried out after the inflation reaches a set balance state; and (5) after data is recorded, exhausting the leak detector, dismantling the tool and finishing the test.
Compared with the structure disclosed in the Chinese patent CN110735923A, the structure of the plugging device is greatly simplified: in the aspect of the inflation head 11, the original core pulling and claw form is changed into an internal expansion rubber ring form which mainly comprises a pull rod 7, an inflation channel 14, an expansion rubber ring 15 and a plugging rubber ring 13; in the cavity, the original spring reset structure is deleted and simplified into a simple pull rod structure, and meanwhile, the sealing structure at each position is greatly simplified; the added proximity switch is used as a tool to be connected in place for detection, so that the abnormal detection data caused by poor connection can be effectively avoided, and the occurrence of false detection and false detection is prevented; the plugging device is particularly suitable for airtight detection of large-volume (below 200L), small-hole and double-hole sealing elements, wherein the double-plugging unit is designed to adapt to the double-hole structure of a detected piece. The double inflation channels brought by the double plugging units adapt to the structure of the detected piece, and simultaneously, the inflation flow is increased, the inflation time can be greatly shortened, and the detection efficiency is improved; the inflation connecting hole 53 is arranged on the side surface of the inflation block, so that the connection is convenient and the interference with the eccentric handle is avoided.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A plugging device for airtight detection of thin wall spare, its characterized in that includes the mounting panel and installs two shutoff units on the mounting panel side by side to and eccentric handle, still installs two proximity switches on the mounting panel, and one of them proximity switch is located the center department between two shutoff units, and another proximity switch then is located the corner department that the mounting panel is located outside two shutoff units.
2. The plugging device for the air tightness detection of the thin-walled workpiece according to claim 1, wherein each plugging unit comprises an inflation block, a pull rod, a connecting shaft, a tensioning rubber ring and a plugging rubber ring;
the inflatable block is provided with a central through hole, the central through hole is a step hole consisting of a small-diameter hole section at the front part and a large-diameter hole section at the rear part, and the front part of the inflatable block where the small-diameter hole section is located is vertically inserted and fixed on the mounting plate;
the pull rod and the connecting shaft are coaxially and sequentially fixedly connected, the diameter of the rod body of the pull rod is matched with the diameter of a hole of a small-diameter hole section of a central through hole of the inflatable block, the diameter of the connecting shaft is matched with the diameter of a hole of a large-diameter hole section, the rod body of the pull rod is inserted into the small-diameter hole section, and sliding sealing is realized through a front sealing ring between the pull rod and the small-diameter hole section; the connecting shaft is inserted into the large-diameter hole section, and sliding sealing is realized through a rear sealing ring between the connecting shaft and the large-diameter hole section;
the expansion rubber ring is sleeved on the pull rod extending out of the inflatable block and is in a long tube shape, the rear end of the expansion rubber ring is abutted against the front end face of the inflatable block, and the front end of the expansion rubber ring is abutted against a limiting stop shoulder part which is arranged at the front end of the pull rod and extends outwards along the radial direction;
the plugging rubber ring is sleeved on the rear part of the expansion rubber ring, is in interference fit with the expansion rubber ring, and abuts against the front end face of the inflatable block;
the length of the expansion rubber ring is enough that the part of the expansion rubber ring positioned in the measured piece has enough length for being compressed and deformed to form an internal clamping limiting part on the inner wall of the air hole of the measured piece, the plugging rubber ring attached to the outer wall of the air hole and the front end face of the inflatable block jointly form an external clamping limiting part, and the internal clamping limiting part and the external clamping limiting part jointly cooperate with a clamping hole wall, so that the relative fixation of the whole plugging unit and the measured piece is ensured in the inflation process;
the rear part of the connecting shaft body is exposed out of the rear end of the inflatable block, the rear end of the shaft body is hinged with a corresponding eccentric wheel part on the eccentric handle through a pin shaft, and the eccentric wheel part is abutted against the end surface of the rear end of the inflatable block.
3. The plugging device for the air tightness detection of the thin-walled workpiece according to claim 2, wherein an annular cavity is formed between the rear part of the pull rod and the large-diameter hole section where the pull rod is located, the pull rod is provided with an inflation channel, one end of the inflation channel is opened and located on the front end face of the pull rod, and the other end of the inflation channel is opened and located on the rod body in the large-diameter hole section, namely the inflation channel is communicated with the annular cavity in the large-diameter hole section; the side wall of the inflation block is also provided with an inflation connecting hole which is used for connecting an inflation pipeline connecting piece and is communicated with the annular cavity in the large-diameter hole section, namely the inflation connecting hole is communicated with the inflation channel through the annular cavity.
4. The plugging device for air tightness detection of thin-walled parts according to claim 2, wherein the rear end of the inflatable block is in threaded connection with a rear end cap and a locking ring, and the end face of the rear end cap serves as the rear end face of the inflatable block to abut against a corresponding eccentric wheel portion on the eccentric handle; the rear end cover and the locking ring form a double-spiral structure, so that the effective length of the central through hole of the inflatable block is adjusted and locked, and the compression amount of the expansion rubber ring is adjusted.
5. The plugging device for the air tightness detection of the thin-walled workpiece according to claim 2, wherein the front portion of the inflatable block with the small-diameter hole section is vertically inserted into the mounting through hole of the mounting plate, the mounting plate is further provided with a jackscrew hole which is vertically penetrated through the corresponding mounting through hole, and the inflatable block is fixed with the mounting plate by a fastening bolt screwed in the jackscrew hole.
6. The plugging device for detecting the air tightness of the thin-walled workpiece according to claim 2, wherein the limiting shoulder stopping part is formed by a shoulder stopping ring extending outwards from a rod body of the pull rod front end.
7. The plugging device for the air tightness detection of the thin-walled workpiece according to claim 2, wherein the limiting shoulder stopping part comprises a shoulder stopping ring extending outwards from a body of the rod at the front end of the pull rod, and a shoulder stopping backing ring sleeved on the pull rod and additionally arranged between the shoulder stopping ring and the expansion rubber ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122102221.8U CN215726579U (en) | 2021-09-02 | 2021-09-02 | Plugging device for air tightness detection of thin-wall part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122102221.8U CN215726579U (en) | 2021-09-02 | 2021-09-02 | Plugging device for air tightness detection of thin-wall part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215726579U true CN215726579U (en) | 2022-02-01 |
Family
ID=80011218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122102221.8U Active CN215726579U (en) | 2021-09-02 | 2021-09-02 | Plugging device for air tightness detection of thin-wall part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215726579U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024216673A1 (en) * | 2023-04-18 | 2024-10-24 | 天津博益气动股份有限公司 | Two-hole simultaneous sealing water-resistant breathable film detection tool |
-
2021
- 2021-09-02 CN CN202122102221.8U patent/CN215726579U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024216673A1 (en) * | 2023-04-18 | 2024-10-24 | 天津博益气动股份有限公司 | Two-hole simultaneous sealing water-resistant breathable film detection tool |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108562413B (en) | Pipe fitting gas tightness detection workbench | |
| CN215726579U (en) | Plugging device for air tightness detection of thin-wall part | |
| CN109506845B (en) | Testing device and testing method for pipeline weld joint leakage detection | |
| CN110449615B (en) | Take airtight detection's back to draw formula from line-up hydraulic fixture | |
| CN105003713A (en) | Sealing end cover of ball valve | |
| CN219810742U (en) | Wire strength testing device | |
| CN110763410A (en) | Assembly line type hydraulic pipe testing device | |
| CN211626850U (en) | Ball valve detection equipment | |
| CN109596284B (en) | Pipeline joint gas leakage detection device | |
| CN208155536U (en) | A kind of conduit air tightness tester | |
| CN211602329U (en) | Pressure pipeline pressure detection device | |
| CN219474893U (en) | Water pump tightness detection device | |
| CN211085596U (en) | Sealed pipe fitting gas tightness detection device that aerifys and rise tightly | |
| CN208488224U (en) | A kind of workpiece air tightness detection tool | |
| CN210566964U (en) | Air tightness leakage test detection inflation plug | |
| CN109489959B (en) | People's air defense superpressure exhaust valve check out test set | |
| CN113740007B (en) | Bellows gas tightness short-term test device is with detecting anchor clamps | |
| CN216309361U (en) | Airtightness detection device for power plant maintenance | |
| CN216207369U (en) | Detection clamp for rapid detection device for air tightness of thin-wall corrugated pipe | |
| CN111929003A (en) | Gas pipeline tightness test device | |
| CN213874833U (en) | Safety valve tightness detection device | |
| CN213449594U (en) | Quick hole plugging device for acoustic detection | |
| CN204922153U (en) | Ball valve end cover | |
| CN219244913U (en) | 4K neck pipe detection device | |
| CN221547278U (en) | Compressor sealing quick connector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |