CN202424050U - Sealing structure in explosion-proof conjunction box - Google Patents
Sealing structure in explosion-proof conjunction box Download PDFInfo
- Publication number
- CN202424050U CN202424050U CN2011203927849U CN201120392784U CN202424050U CN 202424050 U CN202424050 U CN 202424050U CN 2011203927849 U CN2011203927849 U CN 2011203927849U CN 201120392784 U CN201120392784 U CN 201120392784U CN 202424050 U CN202424050 U CN 202424050U
- Authority
- CN
- China
- Prior art keywords
- explosion
- proof
- terminal board
- conjunction box
- box body
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model relates to a sealing structure in an explosion-proof conjunction box, comprising a conjunction box and an explosion-proof terminal board fixedly arranged in the conjunction box by a fastener and a press ring. The sealing structure in an explosion-proof conjunction box is characterized in that the upper end surface of the explosion-proof terminal board is inclined at an angle, and a rectangular cross section sealing gasket is provided between the upper end surface of the explosion-proof terminal board and the conjunction box body. The sealing structure in an explosion-proof conjunction box is advantageous in that the bearing of the rectangular cross section sealing gasket is conducive to the stabilization between the explosion-proof terminal board and the conjunction box body, under the prerequisite that a reasonable flame-proof faying face length is guaranteed, the axial direction dimension of the structure is relatively small, the sealing structure in the explosion-proof conjunction box is simple, the assembling is convenient, and the performance is reliable.
Description
Technical field
The utility model belongs to the electric device for valve technical field, particularly relates to a kind of anti-explosion terminal box inner seal structure.
Background technology
The anti-explosion terminal box portion cover of explosion-proof type electric device for valve is mainly used in the introducing of power cable and control cable, and uses at certain other explosive mixture operational environment of level according to the relevant regulations of national standard.The explosion-proof performance and the sealing property of terminal box portion cover are one of subject matter of paying close attention in the structural design, the explosion-proof main chamber sealing of explosion-proof terminal board and electric device, and forming " double sealing structure " is the anti-explosion terminal box self seal, explosion-proof terminal board and explosion-proof main chamber sealing.The external diameter of traditional explosion-proof terminal board cooperates the formation explosion suppresion surface with the hole of junction box body, the fixing explosion-proof terminal board of pressure ring and screw axial makes it can bear certain pressure, and between explosion-proof terminal board upper surface and junction box body, is provided with sealing.Sealing generally includes two kinds of patterns,
The A hermetically-sealed construction is: O shape circle is housed between explosion-proof terminal board upper surface outer circumference and junction box body; The B hermetically-sealed construction is: O shape circle is housed between explosion-proof terminal board outer circumference and junction box body.The deficiency of A structure is: because the fit clearance of explosion-proof terminal board and junction box body is less and both materials are different, need knock gently sometimes in the assembling, be easy to make O shape circle to come off like this, and can't observe.The B fault of construction is: can't guarantee effective explosion suppresion surface length that explosion-proof terminal board and junction box body form, and not allowing to apply under the lubricated oil condition, damage the sealed section of O shape circle during assembling easily.
Summary of the invention
The utility model for solve the technical problem that exists in the known technology provide a kind of simple in structure, sealing is reliable and the anti-explosion terminal box inner seal structure being convenient to assemble.
The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is:
The anti-explosion terminal box inner seal structure; Comprise junction box body and be fixed on the explosion-proof terminal board in the junction box body through securing member and pressure ring; It is characterized in that: said explosion-proof terminal board upper surface is provided with an inclination angle, is fixed with the square-section sealing gasket between said explosion-proof terminal board upper surface and the junction box body.
The utility model can also adopt following technical scheme:
The inclination angle Q of said explosion-proof terminal board upper surface is 40 °-50 °.
Advantage and the good effect that the utlity model has are: because the utility model adopts technique scheme; The end face of explosion-proof terminal board is processed into certain angle; And between explosion-proof terminal board upper surface and junction box body, be fixed with the square-section sealing gasket that elastomeric material is made; Earlier square-section sealing gasket and junction box body are bondd before the assembling, reinstall explosion-proof terminal board and make its end face compress the square-section sealing gasket and realize sealing between the two.The stressed of square-section sealing gasket helps this part stablizing between explosion-proof terminal board and junction box body, and under the prerequisite that guarantees rational flame proof faying face length, the axial dimension of structure is less relatively.This anti-explosion terminal box inner seal structure is simple in structure, easy to assembly, dependable performance.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Among the figure: 1, explosion-proof terminal board; 2, junction box body; 3, pressure ring; 4, securing member; 5, square-section sealing gasket.
Embodiment
For further understanding summary of the invention, characteristics and the effect of the utility model, the following examples of giving an example now, and conjunction with figs. specifies as follows:
See also Fig. 1; The anti-explosion terminal box inner seal structure; Comprise junction box body 2 and be fixed on the explosion-proof terminal board 1 in the junction box body through securing member 4 and pressure ring 3; Said explosion-proof terminal board 1 upper surface is provided with an inclination angle, is fixed with square-section sealing gasket 5 between said explosion-proof terminal board upper surface and the junction box body.The inclination angle Q of said explosion-proof terminal board upper surface is 40 °-50 °.
Earlier square-section sealing gasket 5 is put into junction box body 2 and both are bondd, explosion-proof terminal board is packed in the junction box body and fastening with pressure ring and screw, make its end face compress the square-section sealing gasket and realize sealing between the two with binding agent.Because there is an angle of inclination upper surface of explosion-proof terminal board, so square-section sealing gasket stressed helps this part stable between explosion-proof terminal board and junction box body.This structure is under the prerequisite that guarantees rational flame proof faying face length, and the axial dimension of structure is less relatively.
Claims (2)
1. anti-explosion terminal box inner seal structure; Comprise junction box body and be fixed on the explosion-proof terminal board in the junction box body through securing member and pressure ring; It is characterized in that: said explosion-proof terminal board upper surface is provided with an inclination angle, is fixed with the square-section sealing gasket between said explosion-proof terminal board upper surface and the junction box body.
2. anti-explosion terminal box inner seal structure according to claim 1 is characterized in that: the inclination angle Q of said explosion-proof terminal board upper surface is 40 °-50 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203927849U CN202424050U (en) | 2011-10-14 | 2011-10-14 | Sealing structure in explosion-proof conjunction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203927849U CN202424050U (en) | 2011-10-14 | 2011-10-14 | Sealing structure in explosion-proof conjunction box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202424050U true CN202424050U (en) | 2012-09-05 |
Family
ID=46748776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203927849U Expired - Fee Related CN202424050U (en) | 2011-10-14 | 2011-10-14 | Sealing structure in explosion-proof conjunction box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202424050U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113566988A (en) * | 2021-06-21 | 2021-10-29 | 宝应安的电子技术有限公司 | Manufacturing process of multiple protection temperature sensor |
-
2011
- 2011-10-14 CN CN2011203927849U patent/CN202424050U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113566988A (en) * | 2021-06-21 | 2021-10-29 | 宝应安的电子技术有限公司 | Manufacturing process of multiple protection temperature sensor |
| CN113566988B (en) * | 2021-06-21 | 2024-04-19 | 宝应安的电子技术有限公司 | Manufacturing process of multi-protection temperature sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20141014 |
|
| EXPY | Termination of patent right or utility model |