CN219013602U - Sealing structure of high-pressure test jig - Google Patents
Sealing structure of high-pressure test jig Download PDFInfo
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- CN219013602U CN219013602U CN202223545773.7U CN202223545773U CN219013602U CN 219013602 U CN219013602 U CN 219013602U CN 202223545773 U CN202223545773 U CN 202223545773U CN 219013602 U CN219013602 U CN 219013602U
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- air guide
- guide rod
- air inlet
- hole
- air
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The utility model provides a sealing structure of a high-pressure test fixture, which comprises an air guide rod, a base and a differential pressure sealing ring, wherein the middle part of the air guide rod is provided with an air guide hole, the base is provided with an air guide rod mounting hole, the right side of the air guide rod mounting hole is provided with an air inlet hole, the inner diameter of the air inlet hole is larger than that of the air guide rod mounting hole, one end of the air guide rod is inserted into the air guide rod mounting hole from left to right, the end part of the air guide rod extends into the air inlet hole, and the differential pressure sealing ring is embedded in a sealing groove formed between the air guide rod and the air inlet hole; an inner skirt edge is arranged at the edge of the inner ring of one side of the differential pressure sealing ring, which faces the air inlet, an outer skirt edge is arranged at the edge of the outer ring, the inner skirt edge extends towards the center, and the outer skirt edge extends back towards the center. This seal structure is through improving the structure of sealing washer, sets up interior shirt rim and outer shirt rim on the sealing washer, when the air inlet has high pressure gas to get into, and interior shirt rim and outer skirt limit pressurized open realize sealedly to improve the leakproofness of high-pressure test tool.
Description
Technical Field
The utility model relates to the technical field of pressure sensor testing equipment, in particular to a sealing structure of a high-pressure testing jig.
Background
The accuracy of the pressure sensor needs to be tested in the process of manufacturing the pressure sensor so as to judge whether the design accuracy requirement is met. During testing, external test pressure is required to be applied to the tested pressure sensor by means of the test fixture, the structure of the test fixture can be designed according to the shape of the pressure sensor, for example, the utility model patent with the publication number of CN217953761 discloses a manual pressure sensor test fixture, which comprises a lower bottom plate and an upper cover plate, wherein an air inlet is arranged on the lower bottom plate, a plurality of sensor mounting holes are arranged on the upper cover plate, and test gas is introduced into the air inlet during testing. The test fixture adopts the sealant to seal the lower bottom plate, but the sealing is not considered at the air inlet, if the air inlet is leaked, the test pressure can not reach a preset value, and thus, the test result is inaccurate.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: in order to overcome the defect that an air inlet of a test fixture in the prior art has leakage risk, the utility model provides a sealing structure of a high-pressure test fixture.
The technical scheme adopted for solving the technical problems is as follows: the sealing structure of the large-pressure test fixture comprises an air guide rod, a base and a differential pressure sealing ring, wherein the middle part of the air guide rod is provided with an air guide hole, the base is provided with an air guide rod mounting hole, the right side of the air guide rod mounting hole is provided with an air inlet hole, the inner diameter of the air inlet hole is larger than that of the air guide rod mounting hole, one end of the air guide rod is inserted into the air guide rod mounting hole from left to right, the end part of the air guide rod extends into the air inlet hole, and the differential pressure sealing ring is embedded in a sealing groove formed between the air guide rod and the air inlet hole; the inner ring edge of one side of the differential pressure sealing ring, which faces the air inlet, is provided with an inner skirt edge, the outer ring edge is provided with an outer skirt edge, the inner skirt edge extends towards the center, and the outer skirt edge extends back towards the center.
Further, in order to improve the extensibility of the inner skirt and the outer skirt, an annular groove is further formed in the pressure difference sealing ring between the inner skirt and the outer skirt. When being pressed by pressure, the resistance to the inner skirt edge and the outer skirt edge is smaller due to the existence of the annular groove, and the sealing can be realized by more rapid outward extension.
The section of the sealing groove between the air guide rod and the air inlet hole is rectangular, and further, the section of the pressure difference sealing ring is rectangular for better fitting with the side wall of the air inlet hole.
Further, the left end of the air guide rod extends out of the air guide rod mounting hole, and the end part of the air guide rod is provided with a convex ring.
Further, the test fixture still includes upper cover plate, right end plate and lower plate, be equipped with the inlet channel on the bottom surface of upper cover plate, the top of upper cover plate is equipped with a plurality of sensor arrangement holes, just sensor arrangement hole bottom and inlet channel intercommunication, the lower plate sets up the bottom at the upper cover plate, covers the inlet channel of upper cover plate bottom surface, right end plate sets up on the right-hand member face of upper cover plate, and through the fix with screw, be equipped with the step hole on the right end plate, the left end setting of air guide bar is in the step hole, and air vent and the inlet channel intercommunication in the air guide bar.
The beneficial effects of the utility model are as follows: according to the sealing structure of the high-pressure testing jig, the inner skirt edge and the outer skirt edge are arranged on the sealing ring by improving the structure of the sealing ring, and when high-pressure gas enters the air inlet, the inner skirt edge and the outer skirt edge are pressed and opened to realize sealing, so that the sealing performance of the high-pressure testing jig is improved.
Drawings
The utility model is further described below with reference to the drawings and examples.
FIG. 1 is a schematic diagram of a large pressure test fixture according to the present utility model.
Fig. 2 is a schematic structural view of the sealing structure of the present utility model.
FIG. 3 is a schematic diagram of the structure of a differential pressure seal.
In the figure: 1. a pressure sensor 2, a sensor mounting hole 3, an upper cover plate 4, an air inlet channel 5, a lower bottom plate 6, a right end plate 7, an air guide rod 71 and an air guide hole, 72, convex rings, 8, a base, 9, a differential pressure sealing ring, 91, a body, 92, an inner skirt, 93, an outer skirt, 94, an annular groove, 10 and an air inlet.
Detailed Description
The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only those features which are relevant to the utility model, and orientation and reference (e.g., up, down, left, right, etc.) may be used solely to aid in the description of the features in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.
The sealing structure of the utility model is based on the expansion principle of the rubber gasket under pressure difference. When high air pressure pressurizes the flexible shirt rim, because flexible shirt rim is out of shape to flexible shirt rim is led to the inside and outside pressure difference of flexible shirt rim to realize that the pressure difference is bigger, flexible shirt rim is out of shape bigger, and then reaches the sealed effect more tight of test fixture.
As shown in fig. 1-3, the sealing structure of the large-pressure testing jig comprises an upper cover plate 3, a right end plate 6, a lower bottom plate 5, an air guide rod 7, a base 8 and a differential pressure sealing ring 9, wherein the air guide rod 7, the base 8 and the differential pressure sealing ring 9 form a sealing structure, the differential pressure sealing ring 9 is mainly used for sealing the air guide rod 7, the air guide rod 7 is used for providing air pressure for the testing jig and applying the air pressure to a testing product, the base 8 is a main body bearing platform of the sealing structure, and the air guide rod 7 and the air inlet channel 4 are connected by english. An air inlet channel 4 is formed in the bottom surface of the upper cover plate 3, a plurality of sensor mounting holes 2 are formed in the top of the upper cover plate 3, the bottom of the sensor mounting holes 2 are communicated with the air inlet channel 4, and the pressure sensor 1 is arranged in the sensor mounting holes 2 during testing; the lower bottom plate 5 sets up the bottom of upper cover plate 3, covers the air inlet channel 4 of upper cover plate 3 bottom surface, right end plate 6 sets up on the right-hand member face of upper cover plate 3, and through the fix with screw, be equipped with the step hole on the right end plate 6, the air guide pole 7 middle part is equipped with air guide hole 71, the left end tip of air guide pole 7 is equipped with bulge loop 72. The left end of the air guide rod 7 is arranged in the step hole, the convex ring 72 is matched with the step hole, and the air guide hole 71 in the air guide rod 7 is communicated with the air inlet channel 4. The base 8 is provided with an air guide rod mounting hole, the right side of the air guide rod mounting hole is provided with an air inlet hole 10, the inner diameter of the air inlet hole 10 is larger than that of the air guide rod mounting hole, one end of the air guide rod 7 is inserted into the air guide rod mounting hole from left to right, the end part of the air guide rod extends into the air inlet hole 10, and the differential pressure sealing ring 9 is embedded in a sealing groove formed between the air guide rod 7 and the air inlet hole 10; an inner skirt edge 92 is arranged at the inner ring edge of one side of the differential pressure sealing ring 9 facing the air inlet hole 10, an outer skirt edge 93 is arranged at the outer ring edge, the inner skirt edge 92 extends towards the center, and the outer skirt edge 93 extends back towards the center. An annular groove 94 is also provided in the differential pressure seal 9 between the inner skirt 92 and the outer skirt 93. The section of the differential pressure sealing ring 9 is rectangular.
Working principle:
during detection, the pressure sensors 1 are arranged on the sensor arranging holes 2 one by one, then the air inlet holes 10 are connected with an external air source, air pressure enters the air inlet channel 4 of the upper cover plate 3 after passing through the air guide rod 7, and then the pressure sensors 1 are tested.
After the high-pressure gas enters from the right side of the air inlet hole 10, left air pressure is generated on the differential pressure sealing ring 9, after the right sides of the inner skirt edge 92 and the outer skirt edge 93 are subjected to the high air pressure, differential pressure is generated with the left side, the inner skirt edge 92 and the outer skirt edge 93 are respectively deformed and unfolded inwards and outwards under the action of the air pressure, the larger the differential pressure is, the larger the deformation of the skirt edge is, the better the sealing effect is, and when the differential pressure is large, the overlarge tensile stress is generated at the joint of the skirt edge and the body 91, so that the stress can be relieved through the middle annular groove 94, and the service life of the sealing ring is ensured.
While the foregoing is directed to the preferred embodiment of the present utility model, other and further embodiments of the utility model may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (5)
1. A seal structure of big pressure test tool, its characterized in that: the air guide device comprises an air guide rod, a base and a differential pressure sealing ring, wherein the middle part of the air guide rod is provided with an air guide hole, the base is provided with an air guide rod mounting hole, the right side of the air guide rod mounting hole is provided with an air inlet hole, the inner diameter of the air inlet hole is larger than that of the air guide rod mounting hole, one end of the air guide rod is inserted into the air guide rod mounting hole from left to right, the end part of the air guide rod extends into the air inlet hole, and the differential pressure sealing ring is embedded into a sealing groove formed between the air guide rod and the air inlet hole; the inner ring edge of one side of the differential pressure sealing ring, which faces the air inlet, is provided with an inner skirt edge, the outer ring edge is provided with an outer skirt edge, the inner skirt edge extends towards the center, and the outer skirt edge extends back towards the center.
2. The sealing structure of the high-pressure test fixture as claimed in claim 1, wherein: an annular groove is further formed in the pressure difference sealing ring between the inner skirt edge and the outer skirt edge.
3. The sealing structure of the high-pressure test fixture as claimed in claim 2, wherein: the section of the differential pressure sealing ring is rectangular.
4. The sealing structure of the high-pressure test fixture as claimed in claim 1, wherein: the left end of the air guide rod extends out of the air guide rod mounting hole, and the end part of the air guide rod is provided with a convex ring.
5. The sealing structure of the high-pressure test fixture according to any one of claims 1 to 4, wherein: the testing jig further comprises an upper cover plate, a right end plate and a lower bottom plate, wherein an air inlet channel is formed in the bottom surface of the upper cover plate, a plurality of sensor mounting holes are formed in the top of the upper cover plate, the bottom of each sensor mounting hole is communicated with the air inlet channel, the lower bottom plate is arranged at the bottom of the upper cover plate and covers the air inlet channel in the bottom surface of the upper cover plate, the right end plate is arranged on the right end surface of the upper cover plate and is fixed through screws, a step hole is formed in the right end plate, the left end of the air guide rod is arranged in the step hole, and an air guide hole in the air guide rod is communicated with the air inlet channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223545773.7U CN219013602U (en) | 2022-12-28 | 2022-12-28 | Sealing structure of high-pressure test jig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223545773.7U CN219013602U (en) | 2022-12-28 | 2022-12-28 | Sealing structure of high-pressure test jig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219013602U true CN219013602U (en) | 2023-05-12 |
Family
ID=86245957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223545773.7U Active CN219013602U (en) | 2022-12-28 | 2022-12-28 | Sealing structure of high-pressure test jig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219013602U (en) |
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2022
- 2022-12-28 CN CN202223545773.7U patent/CN219013602U/en active Active
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