CN202110994U - Quick ground switch - Google Patents
Quick ground switch Download PDFInfo
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- CN202110994U CN202110994U CN2011201970026U CN201120197002U CN202110994U CN 202110994 U CN202110994 U CN 202110994U CN 2011201970026 U CN2011201970026 U CN 2011201970026U CN 201120197002 U CN201120197002 U CN 201120197002U CN 202110994 U CN202110994 U CN 202110994U
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- contact
- movable contact
- headstock
- connecting lever
- moving
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Abstract
The utility model discloses a quick ground switch, which comprises a casing, an operation mechanism, a transmission mechanism, a moving contactor seat and a fixed contactor seat. A rod-shaped moving contactor is slidably disposed on the moving contactor seat, the moving contactor seat and the fixed contactor are arranged on the casing in a separated manner, the fixed contactor is electrically connected with an external high-voltage major loop, and the moving contactor seat is grounded through a ground terminal. The operation mechanism drives the moving contactor to slide in the moving contactor seat back and forth through the transmission mechanism, so that one end of the moving contactor can be separated from or combined with the fixed contactor. The moving contactor seat is arranged on an opening at the top of the casing, the rod-shaped moving contactor is perpendicularly arranged and capable of vertically sliding, and the lower end of the moving contactor can be combined with the fixed contactor when the moving contactor sliding downwards. A seal cover is arranged above the casing, and the moving contactor is positioned in a sealed space formed by the seal cover, the ground terminal, the moving contact seat and the casing. The quick ground switch has fine sealing performance and heat dissipating performance.
Description
Technical field
The utility model relates to a kind of high speed grounding switch, is specifically related to a kind of high speed grounding switch of Cubicle Gas-Insulated Switchgear.
Background technology
In recent years; China SF6 Cubicle Gas-Insulated Switchgear (being called for short GIS) industry is fast-developing; GIS equipment have occupation of land less, advantage such as complete property is strong, be easy to install constructions, anti-harsh and unforgiving environments, reliability height, maintenance are little; Under damp and hot, high height above sea level, harsh and unforgiving environments condition such as high and cold, build high pressure, superhigh pressure transformer station, GIS equipment is first-selected product.
High speed grounding switch is as the important composition parts of GIS; Comprise operating mechanism, outer connecting lever, connecting rod, power transmission shaft, housing, moving contact, fixed contact; Have the hole on the housing sidewall and be provided with sealing flange, the movable contact headstock is housed on the moving contact, fingertip all is installed on movable contact headstock and the fixed contact; Movable contact headstock and fixed contact are separated setting on housing; Fixed contact is electrically connected with the major loop of external belt high pressure; The movable contact headstock is through earth terminal ground connection, and interior connecting lever and moving contact are positioned at the housing top, and interior connecting lever and moving contact are hinged; Moving contact passes housing top can get into enclosure interior, and fixed contact is positioned at enclosure interior; Drive the transmission main shaft rotation by operating mechanism, swing thereby drive outer connecting lever, outer connecting lever is by the connecting rod interlock that links together; Connecting lever swing in outer connecting lever drives simultaneously; Swing through interior connecting lever drives moving contact and slidably reciprocates, and makes moving contact contact or away from fixed contact to realize the divide-shut brake action of high speed grounding switch; Because the outer connecting lever of three-phase high speed grounding switch is linked together by connecting rod, thereby has realized the three-phase synchronous operation.This high speed grounding switch has the short out road of the zygonema of closing fault ability; And can suit certain electromagnetic induced current and static induced current; When creepage phenomenon or enclosure arcing fault appear in the enclosure interior insulator; High speed grounding switch utilizes circuit breaker excision fault current with the quick ground connection of major loop.
But existing high speed grounding switch structure is comparatively complicated, and each parts is more, inconvenience is installed, and in the process that slidably reciprocates of moving contact, its air seal performance is poor, and simultaneously, the heat dispersion of fixed contact is bad.
The utility model content
The utility model technical problem to be solved just provides a kind of high speed grounding switch, has excellent sealing performance and heat dispersion.
For solving the problems of the technologies described above, the solution that the utility model is taked is following:
A kind of high speed grounding switch comprises housing, operating mechanism, transmission mechanism, movable contact headstock and fixed contact, is equiped with shaft-like moving contact on the movable contact headstock slidably; Described movable contact headstock and fixed contact are separated setting on housing; Fixed contact is electrically connected with the major loop of external belt high pressure, moving contact seated connection ground, and described operating mechanism drives moving contact through transmission mechanism and in the movable contact headstock, slidably reciprocates; The first end of movable contact is separated with fixed contact or combine; It is characterized in that: described movable contact headstock is located in the case top perforate, and vertical layout of shaft-like moving contact slides up and down, and its lower end can combine with fixed contact when descending; The housing top also is provided with a seal closure, and said moving contact is positioned at the seal cavity that is made up of seal closure, earth terminal, movable contact headstock.
Thus, moving contact is sealed by seal cavity, and the gas when having avoided moving contact to slide overflows.
On the basis of the above, the utility model can also be done following further improvement:
The upper end of said moving contact is equipped with joint, has allocating slot on the said joint, and described transmission mechanism is made up of interior connecting lever, outer connecting lever, connecting rod and rotating shaft; Connecting lever is positioned at seal closure in said; Said connecting rod is hinged with outer connecting lever, and rotating shaft is hinged on the seal closure, and the two ends of this rotating shaft are fixedly connected an end of inside and outside connecting lever respectively; The other end of outer connecting lever is connected with operating mechanism, and the other end of interior connecting lever puts in the said allocating slot and is connected with joint.So can make the connectors such as not needing screw that is connected of interior connecting lever and moving contact, simplify the structure, and easy for installation; Interior connecting lever is in seal closure, and gas overflows when having avoided interior connecting lever to swing.
Be fixed on to described movable contact headstock insulation the below of described seal closure, the movable contact headstock has the upright opening that cross section cooperates shaft-like moving contact, and the lower end of movable contact headstock is equipped with the securable fingertip of moving contact, and said earth terminal is located at the side of movable contact headstock.
The utility model also can be done further to improve:
Said high speed grounding switch also comprises disc insulator; Described housing both sides have flange hole; Said disc insulator is installed on one of them flange hole; Described fixed contact is vertical hollow tubular structure, and the head of fixed contact is spherical, and this ball head is fixed on the disc insulator from the side.Hollow tubular structure helps the heated gas convection current, improves heat dispersion, and spherical head helps the even distribution of the electric field of fixed contact generation, helps improving its high voltage withstanding level, and it is little to generate heat.
Compared with prior art, the utlity model has following advantage:
(1) simple in structure, easy for installation, improved production efficiency;
(2) good seal performance has guaranteed that the action of moving contact and interior connecting lever makes gas not overflow;
(3) perfect heat-dissipating, the fixed contact heating is little.
Description of drawings
Fig. 1 is the front view of the utility model embodiment;
Fig. 2 Fig. 1 profile (removing operating mechanism, outer connecting lever, connecting rod, ring flange);
Fig. 3 is the right pseudosection of Fig. 2.
Among the figure: 1. fixed contact, 2. seal closure, 3. earth terminal, 4. movable contact headstock, 5. static contact seat; 6. fingertip radome, 7. in connecting lever, the 8. fingertip of static contact seat, 9. joint, 10. housing; 11. the fingertip of movable contact headstock, 12. moving contacts, 13. fixed covers, 14. cover plates, 15. operating mechanisms; 16. outer connecting lever, 17 connecting rods, 18. ring flanges, 19. disc insulators.
Embodiment
Be depicted as a kind of high speed grounding switch embodiment of the utility model like Fig. 1～3, comprise fingertip 8, the joint 9 of operating mechanism 15, outer connecting lever 16, connecting rod 17, power transmission shaft, housing 10, moving contact 12, static contact seat 5, fixed contact 1, seal closure 2, earth terminal 3, movable contact headstock 4, fingertip radome 6, interior connecting lever 7, static contact seat, the fingertip 11 of movable contact headstock.
Be equiped with shaft-like moving contact on the movable contact headstock slidably, movable contact headstock and fixed contact are separated setting on housing, and fixed contact is electrically connected with the major loop of external belt high pressure; The movable contact headstock is through earth terminal ground connection; Operating mechanism drives moving contact through transmission mechanism and in the movable contact headstock, slidably reciprocates, and the first end of movable contact is separated with fixed contact or combines, and the movable contact headstock is located in the case top perforate; The vertical layout of shaft-like moving contact slides up and down, and its lower end can combine with fixed contact when descending.
Have the flange hole of totally six symmetries on the both sides sidewall of housing and the ring flange 18 that is used for sealing gas is housed, the movable contact headstock is housed on the moving contact, securable fingertip all is installed on movable contact headstock and the static contact seat; Interior connecting lever and moving contact are positioned at the housing top, and interior connecting lever and moving contact are hinged, and the perforate that moving contact passes housing top can get into enclosure interior, and fixed contact and static contact seat are positioned at enclosure interior, the integrated casting of conductor and static contact seat;
Seal closure is installed in the housing top; The below of seal closure is earth terminal, movable contact headstock and housing successively, and seal closure, earth terminal, movable contact headstock and housing constitute seal cavity, and moving contact and interior connecting lever all are positioned at the sealing space; Particularly, interior connecting lever is positioned at seal closure; Through seal cavity moving contact and interior connecting lever are sealed, the gas when having avoided interior connecting lever swing and moving contact to slide overflows; The movable contact headstock is the below that is fixed on seal closure with insulating, and the movable contact headstock has the upright opening that cross section cooperates shaft-like moving contact, and the fingertip of moving contact is installed in the lower end of movable contact headstock, and earth terminal is located at the side of movable contact headstock and is connected and ground connection with housing.
This high speed grounding switch also comprises disc insulator 19, and this disc insulator is installed on the flange hole of high order end on the sidewall of housing, and fixed contact is vertical hollow tubular structure; The head of this fixed contact is spherical, and this ball head is fixed on the disc insulator from the side, and hollow tubular structure helps the heated gas convection current; Improve heat dispersion; Spherical head helps the even distribution of the electric field of fixed contact generation, helps improving its high voltage withstanding level, and it is little to generate heat.
Earth terminal is installed in the outer bottom of seal closure; And be socketed on the moving contact, be provided with the inner-cavity structure identical in the earth terminal with the movable contact headstock, the fingertip of moving contact is installed on this inner-cavity structure; The fingertip of this moving contact is close on the moving contact through spring structure; Make moving contact can be close to and connect the fingertip of moving contact on one side, Yi Bian slidably reciprocate, the fingertip of moving contact does not slide with moving contact; Earth terminal is through fixed cover 13 and cover plate 14 support fixation; On the one hand guaranteed the sealing of movable contact headstock, moving contact; Also make hermetically sealed can, earth terminal inner chamber, enclosure interior to be communicated with successively on the other hand, fixed cover and cover plate are the integrated design, successively casting; Save the space, the convenient installation.The inside center of earth terminal is a cast copper partly, has improved compactness and conductivity; The earth terminal outside is an epoxy resin, good insulation preformance.
In the static contact seat of fixed contact, be provided with the fingertip radome, be used for the electric field of even fixed contact fingertip, the fingertip radome also is vertical hollow tubular structure, is cast copper, perfect heat-dissipating, and this fingertip radome gets up the fingertip shroud of static contact seat.
Transmission mechanism is made up of interior connecting lever, outer connecting lever, connecting rod and rotating shaft, and interior connecting lever is positioned at seal closure, and connecting rod is hinged with outer connecting lever, and rotating shaft is hinged on the seal closure; The two ends of this rotating shaft are fixedly connected an end of inside and outside connecting lever respectively, and the other end of outer connecting lever is connected with operating mechanism, and the material of interior connecting lever is an insulating material; The junction of interior connecting lever and moving contact is provided with a joint, and this joint is installed in the upper end of moving contact, and joint is a cylinder; Joint inside has allocating slot, and the other end of interior connecting lever puts in the allocating slot and is connected with joint, can carry out the shift fork action; So can make the connectors such as not needing screw that is connected of interior connecting lever and moving contact, simplify the structure, and easy for installation.
Drive the transmission main shaft rotation by operating mechanism, swing thereby drive outer connecting lever, outer connecting lever is by the connecting rod interlock that links together; Connecting lever swing in outer connecting lever drives simultaneously; Swing through interior connecting lever drives moving contact and slidably reciprocates, and makes moving contact contact or away from static contact seat to realize the divide-shut brake action of high speed grounding switch; Because the outer connecting lever of three-phase high speed grounding switch is linked together by connecting rod; Thereby realized the three-phase synchronous operation, the three-phase action is on all four, has guaranteed the synchronism of three-phase action.
The execution mode of the utility model is not limited thereto; Under the above-mentioned basic fundamental thought of the utility model prerequisite; According to modification, replacement or the change of the ordinary skill knowledge of this area and customary means, all within the utility model rights protection scope to the utility model other various ways that content is made.
Claims (4)
1. a high speed grounding switch comprises housing, operating mechanism, transmission mechanism, movable contact headstock and fixed contact, is equiped with shaft-like moving contact on the movable contact headstock slidably; Described movable contact headstock and fixed contact are separated setting on housing; Fixed contact is electrically connected with the major loop of external belt high pressure, and the movable contact headstock is through earth terminal ground connection, and described operating mechanism drives moving contact through transmission mechanism and in the movable contact headstock, slidably reciprocates; The first end of movable contact is separated with fixed contact or combine; It is characterized in that: described movable contact headstock is located in the case top perforate, and vertical layout of shaft-like moving contact slides up and down, and its lower end can combine with fixed contact when descending; The housing top also is provided with a seal closure, and said moving contact is positioned at the seal cavity that is made up of seal closure, earth terminal, movable contact headstock, housing.
2. high speed grounding switch according to claim 1; It is characterized in that: the upper end of said moving contact is equipped with joint, has allocating slot on the said joint, and described transmission mechanism is made up of interior connecting lever, outer connecting lever, connecting rod and rotating shaft; Connecting lever is positioned at seal closure in said; Said connecting rod is hinged with outer connecting lever, and rotating shaft is hinged on the seal closure, and the two ends of this rotating shaft are fixedly connected an end of inside and outside connecting lever respectively; The other end of outer connecting lever is connected with operating mechanism, and the other end of interior connecting lever puts in the said allocating slot and is connected with joint.
3. high speed grounding switch according to claim 2; It is characterized in that: the below that is fixed on to described movable contact headstock insulation described seal closure; The movable contact headstock has the upright opening that cross section cooperates shaft-like moving contact; The lower end of movable contact headstock is equipped with the securable fingertip of moving contact, and said earth terminal is located at the side of movable contact headstock.
4. high speed grounding switch according to claim 1; It is characterized in that: said high speed grounding switch also comprises disc insulator; Described housing both sides have flange hole, and said disc insulator is installed on one of them flange hole, and described fixed contact is vertical hollow tubular structure; The head of fixed contact is spherical, and this ball head is fixed on the disc insulator from the side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201970026U CN202110994U (en) | 2011-06-13 | 2011-06-13 | Quick ground switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201970026U CN202110994U (en) | 2011-06-13 | 2011-06-13 | Quick ground switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202110994U true CN202110994U (en) | 2012-01-11 |
Family
ID=45436448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201970026U Expired - Lifetime CN202110994U (en) | 2011-06-13 | 2011-06-13 | Quick ground switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202110994U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332335A (en) * | 2014-11-25 | 2015-02-04 | 正泰电气股份有限公司 | High-speed grounding switch |
| CN111180255A (en) * | 2020-02-14 | 2020-05-19 | 正泰电气股份有限公司 | Quick earthing switch device |
-
2011
- 2011-06-13 CN CN2011201970026U patent/CN202110994U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332335A (en) * | 2014-11-25 | 2015-02-04 | 正泰电气股份有限公司 | High-speed grounding switch |
| CN111180255A (en) * | 2020-02-14 | 2020-05-19 | 正泰电气股份有限公司 | Quick earthing switch device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120111 |
|
| CX01 | Expiry of patent term |