CN203553017U - High-voltage disconnecting switch equipped with grading shield - Google Patents
High-voltage disconnecting switch equipped with grading shield Download PDFInfo
- Publication number
- CN203553017U CN203553017U CN201320689492.0U CN201320689492U CN203553017U CN 203553017 U CN203553017 U CN 203553017U CN 201320689492 U CN201320689492 U CN 201320689492U CN 203553017 U CN203553017 U CN 203553017U
- Authority
- CN
- China
- Prior art keywords
- grading shield
- isolation knife
- moving contact
- hinged
- isolation
- 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 - Lifetime
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- 238000002955 isolation Methods 0.000 claims abstract description 39
- 230000009471 action Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 230000005684 electric field Effects 0.000 abstract description 6
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 2
- 239000010935 stainless steel Substances 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model discloses a high-voltage disconnecting switch equipped with a grading shield and used for a switchgear. The disconnecting switch comprises a mount base and three insulating supports, wherein each insulating support is hinged to an isolation knife, moving contacts of the isolation knives are all wrapped in the grading shield made of stainless steel, and the mount base is provided with static contacts at positions in correspondence with the isolation knives; the middle portion of each isolation knife is hinged to one end of a connecting lever, and the other end of the connecting level is hinged to a rotating shaft of the isolation knife; and an operation handle is inserted into an operation hole formed in the rotating shaft of the isolation knife and rotated to realize switching on/off. According to the utility model, the grading shield is added to the moving contact portion, thereby changing the state that the electric field near the moving contacts is not uniform, and enabling the maximal withstanding voltage of a fracture to reach the international standard.
Description
Technical field
the utility model relates to a kind of isolating switch, is specifically related to a kind of high voltage isolator for switch cubicle.
Background technology
high voltage isolator is the significant components of gas insulation switch cabinet,, when isolating switch is during in closing position, it need to carry and transmit certain rated current, when isolating switch is during in open position, it need to reliably be isolated electrification in high voltage part and currentless part, to guarantee personal security.Therefore, the insulation property of isolating switch are extremely important performances.But when isolating switch is during in separating brake, isolation knife is charged, and due to the restriction of structure, its moving contact part electric field may be very inhomogeneous, the lightning impulse voltage that fracture between quiet, moving contact can bear is often difficult to reach the magnitude of voltage of GB regulation, can cause so unsafe hidden danger.
Utility model content
the utility model object is: a kind of isolating switch for switch cubicle is provided, when not affecting the normal use of isolating switch, makes near the Electric Field Distribution of moving contact even, fracture can bear the maximum voltage value of GB defined.
the technical solution of the utility model is:
a kind of high voltage isolator with grading shield, comprise underframe, fixed contact that at least one is hinged on isolation knife on insulating support, arranges with the relevant position of isolation knife are installed, the end that isolation knife contacts with fixed contact is moving contact, and grading shield is installed on moving contact.
preferably, moving contact offers screw, and grading shield is bolted on moving contact.
preferably, grading shield is all wrapped in moving contact in grading shield.
preferably, on mounting bracket, be provided with uniformly three insulating supports, on insulating support, be provided with isolation knife and action bars.
preferably, described transmission mechanism comprises the isolation knife rotating shaft being arranged on underframe, and one end of each isolation knife and connecting lever is hinged, and the other end of connecting lever and isolation knife rotating shaft are hinged.
preferably, described isolation knife rotating shaft offers the handle hole for update handle.
described grading shield adopts stainless steel.
while using the utility model, operating grip is inserted in the handle hole of isolation knife rotating shaft, rotate to reach the object of divide-shut brake; Or can also be connected with isolation knife rotating shaft axle with the rotating shaft of motor, isolating switch is carried out to electric operating.
the utility model has the advantages that:
one. after installing grading shield, near electric field fracture is even.In the situation that not affecting moving contact action and other performances, improve near the Electric Field Distribution situation of moving contact.
two. of the present utility model simple in structure, grading shield easy for installation, practical.
Accompanying drawing explanation
below in conjunction with drawings and Examples, the utility model is further described:
fig. 1 is the schematic diagram of the present embodiment;
fig. 2 is the schematic diagram that the isolation knife of grading shield is installed.
wherein: 1. underframe, 2. isolation knife, 3. fixed contact, 4. insulating support, 5. grading shield, 6. isolation knife rotating shaft, 7. connecting lever, 8. bolt, 9. nut are installed.
Embodiment
embodiment:
as shown in Figure 1, install on underframe 1 and be equiped with uniformly three insulating supports 4, one end of hinged isolation knife 2 on insulating support 4; The end of the other end of isolation knife 2 is moving contact, it is stainless grading shield 5 that moving contact outer wrap has material, its mounting means as shown in Figure 2, isolation knife 2 is that two sheet metals combine, its moving contact offers screw, between sheet metal, by bolt 8 and nut 9, couples together, and also offers corresponding screw on grading shield 5, be wrapped in the outside of moving contact, be fixed on the moving contact of isolation knife 2 with bolt 8 and nut 9; On installation underframe 1, be also provided with fixed contact 3, the corresponding fixed contact 3 of each isolation knife 2, one end of the middle part of isolation knife 2 and connecting lever 7 is hinged, the other end of connecting lever 7 is hinged on and arranges and the isolation knife rotating shaft 6 of installing on underframe 1, isolation knife rotating shaft 6 offers handle hole, so that update handle, rotating operation handle can carry out the operation of manual divide-shut brake; Or the rotating shaft of motor can also be connected with isolation knife rotating shaft 6 axles, isolating switch is carried out to electric operating.
after the moving contact installing grading shield 5 of isolation knife 2, near Electric Field Distribution moving contact is even, makes fracture can bear the surge voltage that meets GB, and the security performance of isolating switch promotes greatly.
those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (6)
1. one kind has the high voltage isolator of grading shield, comprise underframe is installed, at least one is hinged on isolation knife on insulating support, the fixed contact that arranges with the relevant position of isolation knife and the transmission mechanism for isolation knife divide-shut brake, it is characterized in that, the end that isolation knife contacts with fixed contact is moving contact, and grading shield is installed on moving contact.
2. a kind of high voltage isolator with grading shield according to claim 1, is characterized in that, described moving contact offers screw, and grading shield is bolted on moving contact.
3. a kind of high voltage isolator with grading shield according to claim 1 and 2, is characterized in that, grading shield is all wrapped in moving contact in grading shield.
4. a kind of high voltage isolator with grading shield according to claim 1, is characterized in that, is provided with uniformly three insulating supports on mounting bracket, is provided with isolation knife and action bars on insulating support.
5. according to a kind of high voltage isolator with grading shield described in claim 1 or 4, it is characterized in that, described transmission mechanism comprises the isolation knife rotating shaft being arranged on underframe, and one end of each isolation knife and connecting lever is hinged, and the other end of connecting lever and isolation knife rotating shaft are hinged.
6. a kind of high voltage isolator with grading shield according to claim 5, is characterized in that, described isolation knife rotating shaft offers the handle hole for update handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320689492.0U CN203553017U (en) | 2013-11-04 | 2013-11-04 | High-voltage disconnecting switch equipped with grading shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320689492.0U CN203553017U (en) | 2013-11-04 | 2013-11-04 | High-voltage disconnecting switch equipped with grading shield |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203553017U true CN203553017U (en) | 2014-04-16 |
Family
ID=50471098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320689492.0U Expired - Lifetime CN203553017U (en) | 2013-11-04 | 2013-11-04 | High-voltage disconnecting switch equipped with grading shield |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203553017U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106783351A (en) * | 2017-02-24 | 2017-05-31 | 山东泰开隔离开关有限公司 | A kind of single armed is folded for insertion into formula ± 1100kV extra-high voltage direct-current disconnecting switch |
| CN108987133A (en) * | 2018-08-24 | 2018-12-11 | 德力西电气有限公司 | A kind of structure of contact terminal |
-
2013
- 2013-11-04 CN CN201320689492.0U patent/CN203553017U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106783351A (en) * | 2017-02-24 | 2017-05-31 | 山东泰开隔离开关有限公司 | A kind of single armed is folded for insertion into formula ± 1100kV extra-high voltage direct-current disconnecting switch |
| CN106783351B (en) * | 2017-02-24 | 2019-03-05 | 国家电网公司 | A kind of single armed is folded for insertion into formula ± 1100kV extra-high voltage direct-current disconnecting switch |
| CN108987133A (en) * | 2018-08-24 | 2018-12-11 | 德力西电气有限公司 | A kind of structure of contact terminal |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140416 |