CN116086734A - Detection device for box body air tightness test - Google Patents
Detection device for box body air tightness test Download PDFInfo
- Publication number
- CN116086734A CN116086734A CN202111513559.0A CN202111513559A CN116086734A CN 116086734 A CN116086734 A CN 116086734A CN 202111513559 A CN202111513559 A CN 202111513559A CN 116086734 A CN116086734 A CN 116086734A
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- China
- Prior art keywords
- cover plate
- frame
- box body
- detection device
- sealing plate
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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
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
- G01M3/3236—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers
- G01M3/3272—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers for verifying the internal pressure of closed containers
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The detection device for the box body air tightness test comprises a sealing plate assembly matched with a box body port and a clamping piece used for pressing the sealing plate assembly on the box body port; the sealing plate assembly comprises a cover plate and a frame for pressing the cover plate, wherein a circle of sealing strip is arranged on the periphery of the inner face of the cover plate, a quick-change connector communicated with the inner cavity of the box body is arranged on the cover plate, the frame is arranged on the periphery of the outer face of the cover plate, a circle of pressing bolt is arranged on the frame, and the end part of the pressing bolt abuts against the outer face of the cover plate. The invention is connected with the quick-change connector through the inflation device to inflate the inside of the box body. The invention has the advantages of simple structure, easy processing of products, convenient detection, simple use and high qualification rate of products subjected to one-time inspection.
Description
Technical Field
The invention belongs to a test device, and particularly relates to a detection device for an airtight test.
Background
The box body for loading the rocket shell needs to ensure the welding tightness, so that the airtight test is needed to prevent the phenomena of rain, water leakage and the like. The airtight test is one of compactness tests using a gas as a pressurizing medium to prevent leakage of the pressure vessel. This is a pressure vessel where the toxicity of the contents is extremely high, or where no trace leakage is allowed by design, and it is necessary to perform an airtight test.
At present, because the overall length of the box body is longer, the overall tightness test is not practical and complicated, and therefore, an actual airtight test device convenient to operate needs to be designed.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the detection device for the box body air tightness test, which is simple in structure, convenient to detect products, simple to use and high in one-time inspection qualification rate of the products.
The technical scheme of the invention is as follows: the sealing plate assembly is matched with the box body port, and the clamping piece is used for pressing the sealing plate assembly on the box body port; the sealing plate assembly comprises a cover plate and a frame for pressing the cover plate, wherein a circle of sealing strip is arranged on the periphery of the inner face of the cover plate, a quick-change connector communicated with the inner cavity of the box body is arranged on the cover plate, the frame is arranged on the periphery of the outer face of the cover plate, a circle of pressing bolt is arranged on the frame, and the end part of the pressing bolt abuts against the outer face of the cover plate.
The clamping pieces are more than two, and each clamping piece comprises a hook plate, a hook seat for fixing the hook plate and a connecting piece for connecting the hook plate and the hook seat.
The inner end of the hook seat is connected to the frame, and the connecting piece is arranged at the outer end of the hook seat; the hook head of the hook plate is hooked on the box frame at the box port, and the hook tail of the hook plate corresponds to the outer end of the hook seat.
The clamping piece is arranged on the bottom side edge of the sealing plate assembly.
The upper side of the sealing plate assembly is provided with a baffle which is arranged opposite to the clamping piece; the baffle comprises a baffle I arranged on the upper side of the cover plate and a baffle II arranged on the frame, and the baffle I and the baffle II are arranged in a staggered manner.
The contact part of the end face of the box body and the sealing plate assembly is provided with a rubber plate.
A hanging ring is arranged in the middle of the upper side edge of the sealing plate assembly; the lifting ring comprises a lifting ring I arranged on the upper side edge of the cover plate and a lifting ring II arranged on the frame, and the centers of the lifting ring I and the lifting ring II are coincident.
The sealing plate assembly further comprises a positioning assembly for positioning the cover plate and the frame, wherein the positioning assembly comprises a positioning ring arranged on the side edge of the cover plate and a positioning shaft arranged on the side edge of the frame; when the positioning shaft is inserted into the positioning ring, the relative positions of the cover plate and the frame are fixed.
The cover plate is also provided with a pressure detection tube for detecting the pressure in the box body, and the pressure detection tube is provided with a manual ball valve and a pressure gauge.
The two sealing plate assemblies are arranged, at least one sealing plate assembly is provided with an endoscope device, and only the cover plate of one sealing plate assembly is provided with a quick-change connector.
The air tightness test device can be suitable for different types of boxes; specifically, the front end face and the rear end face of the box body are plugged by using sealing plate assemblies, the box body is inflated, and whether air leakage occurs is judged by observing the numerical change of the pressure gauge.
The invention aims at the box bodies with different sizes, and is suitable for different types of box bodies by making the front sealing plate assembly and the rear sealing plate assembly which are matched with the box bodies. The invention has the advantages of simple structure, convenient product detection, simple use and high product one-time inspection qualification rate.
Drawings
FIG. 1 is a schematic view of the structure of a case;
FIG. 2 is a state of use diagram of the present invention;
FIG. 3 is a schematic structural view of a closure plate assembly;
FIG. 4 is a schematic view of FIG. 3 rotated 90 counter-clockwise;
FIG. 5 is a side view of FIG. 4;
FIG. 6 is a schematic structural view of a cover plate;
FIG. 7 is a side view of FIG. 6;
FIG. 8 is a schematic view of a frame structure;
FIG. 9 is a right side view of FIG. 8;
fig. 10 is a left side view of fig. 8.
Detailed Description
In fig. 1 and 2, the outer rings of two ports of the box body a are respectively provided with a box body frame 16. One port of the box body A is provided with a sealing plate assembly B, and the other port of the box body A is provided with a sealing plate assembly C. The contact part of the port A of the box body and the B/C of the sealing plate assembly is provided with a rubber plate to ensure tightness.
In fig. 3, 4 and 5, an endoscope device 7 is installed in both the sealing plate assembly B and the sealing plate assembly C, the sealing plate assembly B or the sealing plate assembly C comprises a cover plate 1 and a frame for pressing the cover plate 1, a circle of sealing strip 2 is installed on the periphery of the inner face of the cover plate 1, a quick-change connector 8 communicated with the inner cavity of the box body is installed on the cover plate 1, and the quick-change connector 8 is connected with an inflation connector of an inflation device to be inflated. The sealing plate component B is provided with a quick-change connector 8 communicated with the inner cavity of the box body and a pressure detection tube for detecting the pressure in the box body. The clamping piece 13 is matched with the sealing plate assembly B and the sealing plate assembly C to tightly press the sealing plate assembly to the port of the box body. The clamping pieces 13 are of three U-shaped structures, and each clamping piece 13 comprises a hook plate, a hook seat for fixing the hook plate and a connecting piece for connecting the hook plate and the hook seat. The inner end of the hook seat is connected to the frame, the connecting piece is arranged at the outer end of the hook seat, the hook head of the hook plate is hooked on the frame 16 of the box body at the port of the box body, and the hook tail of the hook plate corresponds to the outer end of the hook seat. The connecting piece is a bolt
In fig. 6 and 7, the cover plate 1 is welded together by a large flat plate in the middle and 4 thick plates around, and grooves are formed in the plates around for accommodating the sealing strips 2. The big flat plate in the middle of the cover plate 1 of the sealing plate component B is provided with a hole, and the straight pipe is welded with the position corresponding to the hole and communicated with the inner cavity of the box body. The other end of the straight pipe 4 is provided with a manual ball valve 3, the other end of the manual ball valve 3 is connected with a pressure measuring hose 5, the end part of the pressure measuring hose 5 is connected with a pressure gauge 6, and the pressure measuring hose can be used for measuring after being connected. The inflation and the deflation are controlled by manual ball valves.
Finally, the endoscope apparatus 7 is mounted to the cover plate 1. The side of the cover plate 1 is provided with a baffle I9. The large flat plate in the middle of the cover plate 1 of the sealing plate assembly C is not provided with an opening, and sealing is kept.
In fig. 8, 9 and 10, the frame is arranged at the periphery of the outer surface of the cover plate, a circle of compression bolts 15 are arranged on the frame, and the end parts of the compression bolts 15 are propped against the outer surface of the cover plate 1. The frame is formed by welding 4 rectangular beams together, threaded holes are formed in the rectangular beams, nuts 14 are welded on the rectangular beams, compression bolts 15 are arranged at the nuts 14 and the threaded holes, the frame 2 is pressed on thick plates around the cover plate 1, and the compression bolts 15 are screwed to compress the sealing strips. And a second baffle 11 is welded on the side edge of the frame.
When the sealing device is used, firstly, the overhead travelling crane is used for hanging the first lifting ring 12 on the cover plate 1, the first baffle 9 welded on the cover plate 1 is used for enabling the cover plate 1 to be lapped on the side face of the box frame 16, the sealing strip 2 is ensured to be close to the end face of the box frame, and the sealing strip 2 is used for ensuring the tightness of the box; and then hanging ring II of the frame is hung by using the crown block, the frame is lapped on the side surface of the frame 16 of the box body by using the baffle II 11 welded on the frame, the positions of the frame and the box body are positioned, the frame is overlapped with the periphery outside the cover plate 1, and bolts on the clamping piece 13 are screwed down, so that the sealing plate component B/C is clamped with the frame 16 of the box body.
And then the inflation joint is connected with the quick-change joint 8, the manual ball valve is opened, the inside of the box body is inflated, after the inflation is completed, the manual ball valve is closed, and the box body is kept for 5min under the inflation pressure of 10 KPa. The air tightness of the tank is detected by checking whether the value of the pressure changes through the pressure gauge 6. If the pressure gauge 6 is unchanged, it indicates sealing, otherwise, it indicates unsealing. The inside of the case can be observed by the endoscope apparatus 7.
Before detection, the front and rear sealing plate assemblies (namely the sealing plate assemblies B and C) are pressed by the clamping pieces 13, the box body starts to be inflated, and the two end faces are in a closed state, so that the tightness of the box body is maintained. And (3) plastering soapy water on the welding bead of the welded box body, wherein bubbles are formed at the air leakage position and are used for detecting whether the whole welding of the box body is sealed or not.
Claims (10)
1. Detection device for box gas tightness test, its characterized in that: comprises a sealing plate assembly matched with the port of the box body and a clamping piece (13) used for pressing the sealing plate assembly on the port of the box body; the sealing plate assembly comprises a cover plate (1) and a frame used for pressing the cover plate (1), wherein a circle of sealing strip (2) is arranged on the periphery of the inner face of the cover plate (1), a quick-change connector (8) communicated with the inner cavity of the box body is arranged on the cover plate (1), the periphery of the outer face of the cover plate is arranged on the frame, a circle of pressing bolt (15) is arranged on the frame, and the end part of the pressing bolt (15) abuts against the outer face of the cover plate (1).
2. The detection device for a tank airtight test according to claim 1, wherein: the clamping pieces (13) are more than two, and each clamping piece (13) comprises a hook plate, a hook seat for fixing the hook plate and a connecting piece for connecting the hook plate and the hook seat.
3. The detection device for a tank airtight test according to claim 2, wherein: the inner end of the hook seat is connected to the frame, and the connecting piece is arranged at the outer end of the hook seat; the hook head of the hook plate is hooked on a box frame (16) at the box port, and the hook tail of the hook plate corresponds to the outer end of the hook seat.
4. The detection device for a tank airtight test according to claim 1, wherein: the clamping piece (13) is arranged on the bottom side edge of the sealing plate assembly.
5. The detection device for a tank airtight test according to claim 1, wherein: the upper side of the sealing plate assembly is provided with a baffle which is arranged opposite to the clamping piece (13); the baffle comprises a first baffle (9) arranged on the upper side edge of the cover plate (1), and a second baffle (11) arranged on the frame, wherein the first baffle (9) and the second baffle (11) are arranged in a staggered mode.
6. The detection device for a tank airtight test according to claim 1, wherein: the contact part of the end face of the box body and the sealing plate assembly is provided with a rubber plate.
7. The detection device for a tank airtight test according to claim 1, wherein: a hanging ring is arranged in the middle of the upper side edge of the sealing plate assembly; the lifting ring comprises a lifting ring I (12) arranged on the upper side edge of the cover plate (1) and a lifting ring II arranged on the frame, and the centers of the lifting ring I (12) and the lifting ring II are coincident.
8. The detection device for a tank airtight test according to claim 1, wherein: the sealing plate assembly further comprises a positioning assembly for positioning the cover plate (1) and the frame, wherein the positioning assembly comprises a positioning ring arranged on the side edge of the cover plate (1) and a positioning shaft arranged on the side edge of the frame; when the positioning shaft is inserted into the positioning ring, the relative positions of the cover plate (1) and the frame are fixed.
9. The detection device for a tank airtight test according to claim 1, wherein: the cover plate (1) is also provided with a pressure detection tube for detecting the pressure in the box body, and the pressure detection tube is provided with a manual ball valve (3) and a pressure gauge (6).
10. The detection device for a tank airtight test according to claim 1, wherein: the two sealing plate assemblies are arranged, at least one sealing plate assembly is provided with an endoscope device (7), and only the cover plate (1) of one sealing plate assembly is provided with a quick-change connector (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111513559.0A CN116086734A (en) | 2021-12-13 | 2021-12-13 | Detection device for box body air tightness test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111513559.0A CN116086734A (en) | 2021-12-13 | 2021-12-13 | Detection device for box body air tightness test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116086734A true CN116086734A (en) | 2023-05-09 |
Family
ID=86197896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111513559.0A Pending CN116086734A (en) | 2021-12-13 | 2021-12-13 | Detection device for box body air tightness test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116086734A (en) |
-
2021
- 2021-12-13 CN CN202111513559.0A patent/CN116086734A/en active Pending
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