CN216595350U - Low-pressure test box switching device and test box - Google Patents
Low-pressure test box switching device and test box Download PDFInfo
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- CN216595350U CN216595350U CN202123340721.1U CN202123340721U CN216595350U CN 216595350 U CN216595350 U CN 216595350U CN 202123340721 U CN202123340721 U CN 202123340721U CN 216595350 U CN216595350 U CN 216595350U
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Abstract
The utility model discloses a low-pressure test box switching device, which comprises a detachable base arranged outside a test box body, wherein the main body section of the base is T-shaped, a laminating sealing ring is arranged between the big head end of the base and a side plate of the test box body, and the big head end of the base is provided with a first wire passing hole coaxial with a reserved hole on the test box body; a connecting hole is formed in the small head end of the base, internal threads are formed in the peripheral wall of the connecting hole, and the inner diameter of the connecting hole is larger than that of the first wire passing hole; the inner end of the base in the connecting hole is fixedly provided with an extrusion sealing ring with an annular section; the base is in be provided with in the connecting hole and compress tightly the swivel nut, compress tightly the periphery wall of swivel nut with connecting hole threaded connection, compress tightly the centre of swivel nut and offer the second of crossing the line hole coaxial with first. The utility model is simple in operation, it is sealed reliable to can the used by repeated installation, effectively practice thrift experimental cost.
Description
Technical Field
The utility model relates to an electrical equipment testing technical field especially relates to a low atmospheric pressure test box switching device.
Background
Under the condition of low atmospheric pressure, the mechanical performance and the electrical performance of the electrical equipment are greatly influenced, and the influence of low pressure on the product cannot be simulated under normal atmospheric conditions, so that a low pressure test needs to be carried out in a low pressure test box. In the test process, the tested device in the test box needs to be connected with a tester outside the test box in a wiring mode, so that the electrical performance parameters of the tested device in the test process are measured. Therefore, the box body of the low-pressure test box is provided with a channel for the cable to pass through. In order to guarantee the low-pressure environment inside the low-pressure test box, a large amount of sealant or vacuum mud is needed to block a gap between a cable channel and a cable, the sealing mode is complex to operate and easy to leak, and the sealant and the vacuum mud are disposable articles, so that the low-pressure test cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a low pressure test case switching device solves the technical problem who mentions in the above-mentioned background art.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the utility model relates to a low-pressure test box switching device, which comprises a detachable base arranged outside a test box body, wherein the main body section of the base is T-shaped, a laminating sealing ring is arranged between the big head end of the base and a side plate of the test box body, and the big head end of the base is provided with a first wire passing hole coaxial with a reserved hole on the test box body; a connecting hole is formed in the small head end of the base, internal threads are formed in the peripheral wall of the connecting hole, and the inner diameter of the connecting hole is larger than that of the first wire passing hole; an extrusion sealing ring with an annular section is fixedly arranged at the inner end of the connecting hole of the base, and inert gas is filled in the extrusion sealing ring; the base is in be provided with in the connecting hole and compress tightly the swivel nut, compress tightly the periphery wall of swivel nut with connecting hole threaded connection, compress tightly the centre of swivel nut and offer with the coaxial second of first line hole of crossing is crossed.
Furthermore, a plurality of threaded blind holes are uniformly formed in the side plate of the test box body along the circumferential direction, a plurality of countersunk threaded holes corresponding to the threaded blind holes one to one are formed in the large head end of the base along the circumferential direction, and countersunk screws matched with the countersunk threaded blind holes are arranged between the countersunk threaded holes and the threaded blind holes.
Furthermore, a circular sealing groove is formed in a side plate of the box body of the test box, a sealing convex ring is arranged at a position, corresponding to the sealing groove, of the large head end of the base, the cross section of the attaching sealing ring is U-shaped, the inner side of the attaching sealing ring is attached to the sealing convex ring, and the outer side of the attaching sealing ring is attached to the sealing groove.
Furthermore, a first limiting groove is formed in the side plate of the box body of the test box on the outer side of the opening end of the sealing groove, and a second limiting groove is formed in the outer side of the starting end of the sealing convex ring at the large head end of the base; the laminating sealing washer be close to the outside of open end be provided with the first spacing arch of first spacing groove looks adaptation, the tip of the open end of laminating sealing washer outwards be provided with the spacing arch of second spacing groove looks adaptation.
Furthermore, the extrusion sealing ring is fixedly connected with the inner end of the connecting hole through a sealing glue.
Further, the utility model also discloses a proof box, include low atmospheric pressure proof box switching device.
Compared with the prior art, the utility model discloses a beneficial technological effect:
the utility model discloses a laminating sealing washer realizes compressing tightly connecting hole threaded connection on swivel nut and the base to the seal installation between base and the proof box, compresses tightly the swivel nut rotatory in-process, produces the effect to the extrusion sealing washer in the base and makes it deformation down to make the interior week of extrusion sealing washer and the perisporium in close contact with of electric wire form sealedly. Compared with the existing-stage low-pressure test box switching position, the sealing device is simple to operate, reliable in sealing, capable of being repeatedly installed and used, and effectively saves test cost.
Drawings
The present invention will be further explained with reference to the following description of the drawings.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
description of reference numerals: 1. a test chamber body; 2. a base; 3. a threaded blind hole; 4. countersunk threaded holes; 5. Countersunk head screws; 6. fitting a sealing ring; 7. sealing the groove; 8. a sealing convex ring; 9. a first limit groove; 10. A second limit groove; 11. a first limit protrusion; 12. a second limit bulge; 13. reserving a hole; 14. a first wire passing hole; 15. connecting holes; 16. pressing a sealing ring; 17. sealing glue; 18. pressing the threaded sleeve; 19. a second wire passing hole; 20. an electric wire.
Detailed Description
As shown in fig. 1-2, the low-pressure test chamber adapter device comprises a base 2 detachably mounted on the outer side of a test chamber body 1, wherein the cross section of the main body of the base 2 is T-shaped. Specifically, a plurality of threaded blind holes 3 are uniformly formed in a side plate of the test box body 1 along the circumferential direction, a plurality of countersunk threaded holes 4 corresponding to the threaded blind holes 3 one to one are formed in the large end of the base 2 along the circumferential direction, and countersunk screws 5 matched with the countersunk threaded blind holes are arranged between the corresponding countersunk threaded holes 4 and the threaded blind holes 3, so that the base 2 is fixedly connected with the test box body 1 through the plurality of countersunk screws 5.
A joint sealing ring 6 is arranged between the big end of the base 2 and the side plate of the test box body 1, a circular sealing groove 7 is formed in the side plate of the test box body 1, and a sealing convex ring 8 is arranged at the position, corresponding to the sealing groove 7, of the big end of the base 2. The section of the joint sealing ring 6 is U-shaped, the inner side of the joint sealing ring is jointed with the sealing convex ring 8, and the outer side of the joint sealing ring is jointed with the sealing groove 7. A first limiting groove 9 is formed in the side plate of the test box body 1 on the outer side of the opening end of the sealing groove 7, and a second limiting groove 10 is formed in the outer side of the starting end of the sealing convex ring 8 at the large end of the base 2. The outer side of the close to the opening end of the attaching sealing ring 6 is provided with a first limiting bulge 11 matched with the first limiting groove 9, and the end part of the opening end of the attaching sealing ring 6 is outwards provided with a second limiting bulge 12 matched with the second limiting groove 10.
The large end of the base 2 is provided with a first wire passing hole 14 which is coaxial with the preformed hole 13 on the test box body 1.
A connecting hole 15 is formed in the small end of the base 2, internal threads are formed in the peripheral wall of the connecting hole 15, and the inner diameter of the connecting hole 15 is larger than that of the first wire passing hole 14. The base 2 is in the inner of connecting hole 15 is fixed with extrusion sealing circle 16 that the cross-section is annular, extrusion sealing circle 16 through sealed glue 17 with the inner fixed connection of connecting hole 15, in addition, extrusion sealing circle 16 is inside to be filled with inert gas. The base 2 is provided with a pressing threaded sleeve 18 in the connecting hole 15, the peripheral wall of the pressing threaded sleeve 18 is in threaded connection with the connecting hole 15, and a second wire passing hole 19 coaxial with the first wire passing hole 14 is formed in the middle of the pressing threaded sleeve 18.
Additionally, the utility model also discloses a proof box, including aforementioned low atmospheric pressure proof box switching device.
The utility model discloses at the during operation, fix the base on the proof box through a plurality of countersunk screw, then pass the preformed hole on second line hole, first line hole and the proof box of crossing with electric wire 20, make the equipment under test in the electrical property one end connection proof box, the outer detector of proof box is connected to the other end. And then the end part of the pressing threaded sleeve is contacted with the extrusion sealing ring and gradually extrudes the same by screwing the pressing threaded sleeve, and the extrusion sealing ring is extruded and flattened under the action of the pressing threaded sleeve until the inner periphery of the extrusion sealing ring is tightly contacted with the peripheral wall of the electric wire, so that the sealing effect is formed.
The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.
Claims (6)
1. The utility model provides a low pressure test case switching device which characterized in that: the test box comprises a detachable base arranged on the outer side of a test box body, the main body of the base is T-shaped in cross section, a joint sealing ring is arranged between the big head end of the base and a side plate of the test box body, and a first wire passing hole coaxial with a preformed hole in the test box body is formed in the big head end of the base; a connecting hole is formed in the small head end of the base, internal threads are formed in the peripheral wall of the connecting hole, and the inner diameter of the connecting hole is larger than that of the first wire passing hole; an extrusion sealing ring with an annular section is fixedly arranged at the inner end of the connecting hole of the base, and inert gas is filled in the extrusion sealing ring; the base is in be provided with in the connecting hole and compress tightly the swivel nut, compress tightly the periphery wall of swivel nut with connecting hole threaded connection, compress tightly the centre of swivel nut and offer with the coaxial second of first line hole of crossing is crossed.
2. The low pressure test chamber adapter of claim 1, wherein: a plurality of threaded blind holes are uniformly formed in the side plate of the test box body along the circumferential direction, a plurality of countersunk threaded holes corresponding to the threaded blind holes one to one are formed in the large head end of the base along the circumferential direction, and countersunk screws matched with the countersunk threaded blind holes are arranged between the corresponding countersunk threaded holes and the threaded blind holes.
3. The low pressure test chamber adapter of claim 1, wherein: a circular sealing groove is formed in a side plate of the box body of the test box, a sealing convex ring is arranged at the position, corresponding to the sealing groove, of the large head end of the base, the cross section of the attaching sealing ring is U-shaped, the inner side of the attaching sealing ring is attached to the sealing convex ring, and the outer side of the attaching sealing ring is attached to the sealing groove.
4. The low pressure test chamber adapter of claim 3, wherein: a first limiting groove is formed in the side plate of the test box body on the outer side of the opening end of the sealing groove, and a second limiting groove is formed in the outer side of the starting end of the sealing convex ring at the large head end of the base; the laminating sealing washer be close to the outside of open end be provided with the first spacing arch of first spacing groove looks adaptation, the tip of the open end of laminating sealing washer outwards be provided with the spacing arch of second spacing groove looks adaptation.
5. The low pressure test chamber adapter of claim 1, wherein: the extrusion sealing ring is fixedly connected with the inner end of the connecting hole through a sealant.
6. A test chamber, characterized in that: the low-pressure test chamber adapter device of any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123340721.1U CN216595350U (en) | 2021-12-28 | 2021-12-28 | Low-pressure test box switching device and test box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123340721.1U CN216595350U (en) | 2021-12-28 | 2021-12-28 | Low-pressure test box switching device and test box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216595350U true CN216595350U (en) | 2022-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123340721.1U Active CN216595350U (en) | 2021-12-28 | 2021-12-28 | Low-pressure test box switching device and test box |
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| CN (1) | CN216595350U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116328857A (en) * | 2023-02-16 | 2023-06-27 | 广州五所环境仪器有限公司 | Cable fixing device and environment test box |
-
2021
- 2021-12-28 CN CN202123340721.1U patent/CN216595350U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116328857A (en) * | 2023-02-16 | 2023-06-27 | 广州五所环境仪器有限公司 | Cable fixing device and environment test box |
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