CN201623444U - Grounding box explosion-proof bottom cover - Google Patents
Grounding box explosion-proof bottom cover Download PDFInfo
- Publication number
- CN201623444U CN201623444U CN2010201180121U CN201020118012U CN201623444U CN 201623444 U CN201623444 U CN 201623444U CN 2010201180121 U CN2010201180121 U CN 2010201180121U CN 201020118012 U CN201020118012 U CN 201020118012U CN 201623444 U CN201623444 U CN 201623444U
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- China
- Prior art keywords
- pressure relief
- gas pressure
- ground connection
- relief slot
- explosion
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- Expired - Fee Related
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Abstract
The utility model relates to a grounding box explosion-proof bottom cover, which comprises a bottom cover (3) fixedly connected with the lower end of a grounding box body (2), an arc pressure relief groove (4) is arranged on the bottom cover (3), the arc center position of the arc pressure relief groove (4) deviates from a geometrical center of the bottom cover (3), and an opening of the arc pressure relief groove (4) faces the geometrical center of the bottom cover (3). The grounding box explosion-proof bottom cover can timely open the pressure relief groove in a fixed direction manner when inner pressure of a grounding box reaches designed limit, thereby achieving the function of pressure relief, and avoiding human injuries and cable damages caused by explosion of the grounding box.
Description
Technical field
The utility model relates to a kind of electrical explosion proof device, specifically is used for the explosion-proof bottom of a kind of ground connection case of high-tension cable ground connection case, belongs to high-tension cable earth protective device field.
Background technology
In prior art, the ground connection case is mainly used in the protective earthing of high-tension cable, is a kind of ground protection mechanical device.Tradition ground connection case is not considered explosion prevention function in design, has very big potential safety hazard.When short trouble appearred in ground connection case inside, the gas in the casing sharply expanded, and pressure increases, and may cause the blast of ground connection case, thereby cause personal injury or cable fault accident, influenced the normal operation of electric power system.This shows that the ground connection case does not possess explosion prevention function and brings very big potential safety hazard can for the normal operation of electric power system.
Summary of the invention
The purpose of this utility model provide a kind of simple in structure, can effectively avoid the personal injury that causes because of ground connection case blast and the explosion-proof bottom of ground connection case of cable fault accident.
The technical scheme that realizes above-mentioned purpose is: the explosion-proof bottom of a kind of ground connection case, comprise the bottom of fixedlying connected with ground connection box body lower end, has gas pressure relief slot on the described bottom, gas pressure relief slot is a circular arc, and the circular arc home position of gas pressure relief slot departs from the geometric center of bottom, and the opening of gas pressure relief slot is towards the geometric center of bottom.
Bottom adopts aluminium alloy to make, and the thickness H1 of bottom is: 6～8mm.
The wall thickness H 2 of gas pressure relief slot is: the arc angle α of 0.5～1mm, gas pressure relief slot is: 270 °～300 °.
The circular arc of gas pressure relief slot is a major arc, and distributes with the vertical line of symmetry symmetry of bottom.
After adopting technique scheme, owing to adopt the gas pressure relief slot that on bottom, processes one circular arc, make the pressure relief opening of a weakness of ground connection case bottom generation, bottom thickness H1:6～8mm, the wall thickness H 2:0.5 of gas pressure relief slot～1mm, arc angle α: 270 °～300 °.Gas pressure relief slot is done eccentric the processing man-hour adding, and make center and the bottom decentraction of gas pressure relief slot, thereby realization pressure orientation is released; When pressure discharges, because the arc angle α of gas pressure relief slot is 270 °～300 °, and the whole circular recess of non-360-degree, so gas pressure relief slot is when opening, can not separate, fly out along the part that gas pressure relief slot disconnects, thereby improve the fail safe of ground connection case greatly with ground connection case bottom with form of chips.
Compared with the prior art this patent has the following advantages:
This patent is simple in structure, compact, reasonable; This device can be in time, orientation opens gas pressure relief slot, reaches the function of relieving pressure when ground connection case internal pressure reaches design limit, thereby avoid the personal injury and the cable fault accident that cause because of the blast of ground connection case; Gas pressure relief slot and bottom synchronous processing are compared with traditional rupture disk technology, and processing cost is lower.
Description of drawings
Fig. 1 is a plan structure schematic diagram of the present utility model;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the general assembly schematic diagram of the utility model and ground connection case.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
As shown in Figure 1, 2, 3, the explosion-proof bottom of a kind of ground connection case, comprise the bottom 3 of fixedlying connected with ground connection box body 2 lower ends, has gas pressure relief slot 4 on the bottom 3, gas pressure relief slot 4 is a circular arc, and the circular arc home position of gas pressure relief slot 4 departs from the geometric center of bottom 3, and the opening of gas pressure relief slot 4 is towards the geometric center of bottom 3.
As shown in Figure 1, 2, the wall thickness H 2 of gas pressure relief slot 4 is: the arc angle α of 0.5～1mm, gas pressure relief slot 4 is: 270 °～300 °.
As shown in Figure 1, 2, the circular arc of gas pressure relief slot 4 is a major arc, and distributes with bottom 3 vertical line of symmetry symmetries.
Shown in Fig. 1～3, operation principle of the present utility model is as follows:
Ground connection case bottom 3 uses aluminium alloy plate to process, be fastenedly connected by bolt with ground connection box body 2, cooperation is with the sealing of ground connection case end cap 1 with ground connection box body 2, make the inner space that forms airtight a, waterproof of ground connection case, ground connection case gas pressure relief slot 4 is positioned on the ground connection case bottom 3, processes by milling machine.Ground connection case gas pressure relief slot 4 wall thickness are thinner, form the release aperture of a weakness on bottom, and when ground connection case internal pressure reached the explosion limit, gas pressure relief slot can be opened, and realize that pressure discharges.Ground connection case gas pressure relief slot 4 is a circular arc, and non-360-degree full circle shape, and when this design can realize that gas pressure relief slot is opened, gas pressure relief slot can not separate, fly out with ground connection case bottom 3, damages accident.Ground connection case gas pressure relief slot 4 centers and ground connection case bottom 3 center decentraction, when ground connection case bottom 3 is installed, make gas pressure relief slot circular arc opening direction aim at the mounting bracket direction, thereby the orientation that has realized ground connection case pressure discharge, avoided pressure to discharge, damaged accident to the installation personnel direction.
Claims (4)
1. explosion-proof bottom of ground connection case, comprise the bottom (3) of fixedlying connected with ground connection box body (2) lower end, it is characterized in that: have gas pressure relief slot (4) on the described bottom (3), gas pressure relief slot (4) is a circular arc, and the circular arc home position of gas pressure relief slot (4) departs from the geometric center of bottom (3), and the opening of gas pressure relief slot (4) is towards the geometric center of bottom (3).
2. the explosion-proof bottom of ground connection case according to claim 1 is characterized in that: described bottom (3) adopts aluminium alloy to make, and the thickness H1 of bottom (3) is: 6～8mm.
3. the explosion-proof bottom of ground connection case according to claim 1 and 2 is characterized in that: the wall thickness H 2 of described gas pressure relief slot (4) is: the arc angle α of 0.5～1mm, gas pressure relief slot (4) is: 270 °～300 °.
4. the explosion-proof bottom of ground connection case according to claim 1 and 2 is characterized in that: the circular arc of described gas pressure relief slot (4) is a major arc, and with vertically line of symmetry symmetry distribution of bottom (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201180121U CN201623444U (en) | 2010-02-25 | 2010-02-25 | Grounding box explosion-proof bottom cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201180121U CN201623444U (en) | 2010-02-25 | 2010-02-25 | Grounding box explosion-proof bottom cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201623444U true CN201623444U (en) | 2010-11-03 |
Family
ID=43026899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201180121U Expired - Fee Related CN201623444U (en) | 2010-02-25 | 2010-02-25 | Grounding box explosion-proof bottom cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201623444U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105579705A (en) * | 2013-09-27 | 2016-05-11 | 阿耐思特岩田株式会社 | Pressure booster compressor |
-
2010
- 2010-02-25 CN CN2010201180121U patent/CN201623444U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105579705A (en) * | 2013-09-27 | 2016-05-11 | 阿耐思特岩田株式会社 | Pressure booster compressor |
| CN105579705B (en) * | 2013-09-27 | 2017-07-18 | 阿耐思特岩田株式会社 | Compression type booster compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101103 Termination date: 20130225 |