CN109411286B - High-voltage isolating switch - Google Patents
High-voltage isolating switch Download PDFInfo
- Publication number
- CN109411286B CN109411286B CN201811572538.4A CN201811572538A CN109411286B CN 109411286 B CN109411286 B CN 109411286B CN 201811572538 A CN201811572538 A CN 201811572538A CN 109411286 B CN109411286 B CN 109411286B
- Authority
- CN
- China
- Prior art keywords
- contact arm
- fixing sleeve
- contact
- bolt
- piston rod
- 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.)
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Links
- 238000004146 energy storage Methods 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 11
- 230000000903 blocking effect Effects 0.000 claims description 8
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 6
- 238000005381 potential energy Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
- H01H31/28—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with angularly-movable contact
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
Landscapes
- Fuses (AREA)
- Springs (AREA)
Abstract
The application relates to a high-voltage isolating switch which comprises a bottom frame, a first support column, a second support column, a contact arm and a contact piece, wherein the first support column and the second support column are correspondingly arranged at two ends of the bottom frame; the contact arm comprises a first contact arm and a second contact arm which are arranged in parallel, and the first contact arm and the second contact arm are connected to the rotating shaft; the spring adopts the memory spring, automatically generates deformation force which increases along with temperature rise, keeps and strengthens the trend of elastic potential energy release, and realizes that the pressure applied on the contact arm is kept unchanged or even strengthened, thereby reducing the contact resistance of the contact arm, reducing the electric energy loss, reducing the temperature of the contact arm during operation, and avoiding the occurrence of safety accidents such as contact burnout and the like caused by poor contact and heating of the contact arm.
Description
Technical Field
The application relates to the field of power equipment, in particular to a high-voltage isolating switch.
Background
The high-voltage isolating switch is an important switching device in power plants and substation electrical systems, and is matched with a high-voltage circuit breaker. The isolating switch is suitable for indoor devices with three-phase alternating current of 50Hz and rated voltage of 12 KV. The high-voltage device is switched on, off or switched on under a voltage-column load.
The spring of the existing jacking device of the high-voltage isolating switch is made of stainless steel, and after the spring is deformed by applying external force to the spring and is stored for a long time, the elastic potential energy is gradually attenuated due to the fatigue of metal, the elastic force is gradually weakened, and the contact arm and the contact piece are separated, so that power failure is caused.
Disclosure of Invention
The application aims to solve the technical problem of providing a high-voltage isolating switch for preventing accidents such as power failure and the like caused by fatigue of a spring.
The technical scheme adopted by the application is as follows: the high-voltage isolating switch comprises a bottom frame, a first support column, a second support column, a contact arm, a contact piece and a tightening device, wherein the first support column and the second support column are correspondingly arranged at two ends of the bottom frame, the contact arm is arranged on the first support column through a rotating shaft, the contact piece is arranged on the second support column, and the tightening device is arranged on one side, close to the contact piece, of the contact arm; the contact arm comprises a first contact arm and a second contact arm which are arranged in parallel, and the first contact arm and the second contact arm are connected to the rotating shaft.
The jacking device comprises a bolt and a nut, wherein the bolt is arranged between a first contact arm and a second contact arm, the nut is arranged at the end part of the bolt, the bolt extends out of the second contact arm, and a memory spring is arranged between the nut and the second contact arm and sleeved on the bolt.
According to the application, the inner side of the nut is provided with a first fixing sleeve, the outer side of the second contact arm is provided with a second fixing sleeve, the first fixing sleeve and the second fixing sleeve are sleeved on the bolt, and the memory spring is arranged between the first fixing sleeve and the second fixing sleeve.
According to the application, a return device for pushing the second contact arm back to the original position when the memory spring fails is sleeved on the bolt between the first fixing sleeve and the second fixing sleeve.
The return device comprises a mounting sleeve sleeved on a bolt, an energy storage cavity, an action cavity and a piston rod, wherein the energy storage cavity is arranged in the mounting sleeve and is provided with high-pressure gas, the action cavity faces the second fixing sleeve, the piston rod is arranged in the action cavity, the inner side end of the piston rod is in sealing contact with the inner wall of the action cavity, a baffle is arranged between the energy storage cavity and the action cavity, the outer side end of the baffle is fixedly connected with a baffle block, and the upper end face of the baffle block is gradually inclined upwards from inside to outside.
The application is provided with a through groove at one side of the mounting sleeve, a push rod is arranged in the through groove, one end of the push rod is fixedly connected with the piston rod, and the other end of the push rod corresponds to the stop block.
The ejector rod is shaped like a Chinese character 'ji', and the upper end of the ejector rod is fixedly connected with the piston rod.
The inner side end of the piston rod is provided with the blocking cover, the blocking cover is in sealing connection with the inner wall of the acting cavity, the side wall of the acting cavity is provided with the limiting block, and the limiting block is arranged at the inner side of the through groove and used for preventing the piston rod from falling out of the acting cavity and preventing the through groove from being communicated with the energy storage cavity.
The bottom end of the ejector rod corresponds to the upper end face of the stop block in shape.
A sealing gasket is arranged between the baffle cover and the energy storage cavity.
According to the application, the fixing sleeve is arranged on the mounting sleeve, the fixing sleeve is positioned between the mounting sleeve and the first fixing sleeve, threads are arranged at the top of the fixing sleeve, threaded holes are arranged at the bottom of the mounting sleeve, and the mounting sleeve is connected with the fixing sleeve through the threads.
The memory spring adopts a CuZnAl memory alloy spring.
The application has the positive effects that: the spring adopts the memory spring, automatically generates deformation force which increases along with temperature rise, keeps and strengthens the trend of elastic potential energy release, and realizes that the pressure applied on the contact arm is kept unchanged or even strengthened, thereby reducing the contact resistance of the contact arm, reducing the electric energy loss, reducing the temperature of the contact arm during operation, and avoiding the occurrence of safety accidents such as contact burnout and the like caused by poor contact and heating of the contact arm.
Drawings
FIG. 1 is a schematic diagram of the structure of the present application;
FIG. 2 is a schematic view of a tightening apparatus according to the present application;
FIG. 3 is a schematic view of a return device according to the present application;
FIG. 4 is an enlarged view of a portion of FIG. 3A in accordance with the present application;
FIG. 5 is a schematic view of the structure of the fixing sleeve of the present application;
fig. 6 is a schematic view of the piston rod of the present application in a compressed state.
In the figures, 1-chassis, 2-first strut, 3-second strut, 4-contact arm, 401-first contact arm, 402-second contact arm, 5-spindle, 7-tightening device, 701-bolt, 702-nut, 703-first fixed sleeve, 704-second fixed sleeve, 705-memory spring, 8-return device, 801-mounting sleeve, 802-energy storage cavity, 803-air inlet, 804-acting cavity, 805-blocking cover, 806-piston rod, 807-through slot, 808-ejector rod, 809-stop, 810-baffle, 811-fixed sleeve, 812-threaded hole, 813-stopper, 814-sealing washer, 9-contact.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present application, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present application; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present application.
Example 1: as shown in fig. 1 and 2, the application comprises a bottom frame 1, a first support column 2 and a second support column 3 which are correspondingly arranged at two ends of the bottom frame 1, a contact arm 4 arranged on the first support column 2 through a rotating shaft 5, and a contact piece 9 arranged on the second support column 3, wherein a jacking device is arranged at one side of the contact arm 4 close to the contact piece 9; the contact arm 4 comprises a first contact arm 401 and a second contact arm 402 which are arranged in parallel, and the first contact arm 401 and the second contact arm 402 are connected to the rotating shaft 5;
the jacking device 7 comprises a bolt 701 and a nut 702, wherein the bolt 701 is arranged between the first contact arm 401 and the second contact arm 402, the nut 702 is arranged at the end part of the bolt 701, the bolt 701 extends out of the second contact arm 402, a memory spring 705 is arranged between the nut 702 and the second contact arm 402, and the memory spring 705 is sleeved on the bolt 701. The memory spring 705 is a CuZnAl memory alloy spring, and the memory alloy spring gradually increases after being heated, so as to increase the pushing force to the contact arm, thereby keeping the contact arm in contact with the contact piece 9, and preventing the breaking and power failure caused by elastic fatigue of the spring.
A first fixing sleeve 703 is arranged on the inner side of the nut 702, a second fixing sleeve 704 is arranged on the outer side of the second contact arm 402, the first fixing sleeve 703 and the second fixing sleeve 704 are sleeved on the bolt 701, and the memory spring 705 is arranged between the first fixing sleeve 703 and the second fixing sleeve 704.
Example 2: since the memory spring may also fail, in order to prevent the breaking condition caused by the failure of the memory spring, the present embodiment is provided with a return device for pushing the second contact arm 402 back to the original position when the memory spring 705 fails, which is sleeved on the bolt 701 between the first fixing sleeve 703 and the second fixing sleeve 704. When the memory spring 705 fails, the second contact arm 402 moves outwards, triggering the return means again pushing the second contact arm 402 tightly.
All technical schemes of the embodiment are shown in the accompanying drawings 1-6, and the device comprises a bottom frame 1, a first support column 2 and a second support column 3 which are correspondingly arranged at two ends of the bottom frame 1, a contact arm 4 arranged on the first support column 2 through a rotating shaft 5, and a contact piece 9 arranged on the second support column 3, wherein a tightening device is arranged at one side of the contact arm 4 close to the contact piece 9; the contact arm 4 comprises a first contact arm 401 and a second contact arm 402 which are arranged in parallel, and the first contact arm 401 and the second contact arm 402 are connected to the rotating shaft 5;
the jacking device 7 comprises a bolt 701 and a nut 702, wherein the bolt 701 is arranged between the first contact arm 401 and the second contact arm 402, the nut 702 is arranged at the end part of the bolt 701, the bolt 701 extends out of the second contact arm 402, a memory spring 705 is arranged between the nut 702 and the second contact arm 402, and the memory spring 705 is sleeved on the bolt 701. The memory spring 705 is a CuZnAl memory alloy spring, and the memory alloy spring gradually increases after being heated, so as to increase the pushing force to the contact arm, thereby keeping the contact arm in contact with the contact piece 9, and preventing the breaking and power failure caused by elastic fatigue of the spring.
A first fixing sleeve 703 is arranged on the inner side of the nut 702, a second fixing sleeve 704 is arranged on the outer side of the second contact arm 402, the first fixing sleeve 703 and the second fixing sleeve 704 are sleeved on the bolt 701, and the memory spring 705 is arranged between the first fixing sleeve 703 and the second fixing sleeve 704.
The return device comprises a mounting sleeve 801 sleeved on a bolt 701, an energy storage cavity 802 with high-pressure gas arranged in the mounting sleeve 801, an action cavity 804 facing the second fixing sleeve 704 and a piston rod 806 arranged in the action cavity 804, wherein the inner side end of the piston rod 806 is in sealing contact with the inner wall of the action cavity 804, a baffle 810 is arranged between the energy storage cavity 802 and the action cavity 804, a stop block 809 is fixedly connected to the outer side end of the baffle 810, and the upper end surface of the stop block 809 gradually inclines upwards from inside to outside; the energy storage cavity 802 is provided with an air inlet 803, and the air inlet 803 is also provided with a one-way valve, so that the leakage of the air is prevented after the air is filled into the energy storage cavity 802.
A through groove 807 is provided on one side of the mounting sleeve 801, and a push rod 808 is provided in the through groove 807, one end of the push rod 808 is fixedly connected with the piston rod 806, and the other end corresponds to the stopper 809.
The ejector 808 has a 7-shape, and the upper end thereof is fixedly connected with the piston rod 806.
A blocking cover 805 is arranged at the inner side end of the piston rod 806, the blocking cover 805 is in sealing connection with the inner wall of the acting cavity 804, a limiting block 813 is arranged on the side wall of the acting cavity 804, the limiting block 813 is arranged at the inner side of the through groove 807 and is used for preventing the piston rod 806 from being separated from the acting cavity 804 and preventing the through groove 807 from being communicated with the energy storage cavity 802, and the bottom end of the ejector rod 808 corresponds to the upper end face of the stop block 809 in shape.
When the second contact arm moves outwards, the piston rod 806 is pushed to move to the side close to the second fixing sleeve 703, so that the ejector rod 808 contacts with the stop block 809 to move outwards, the stop block 810 is opened, the energy storage cavity 802 is communicated with the action cavity 804, the piston rod 806 is pushed out again under the action of compressed air, the second contact arm is pressed, and disconnection is effectively prevented.
In order to improve the sealing performance of the blocking cover 805 and prevent air leakage, sealing gaskets 814 are arranged between the blocking cover 805 and the energy storage cavity 802 and the action cavity 804.
Further, in order to prevent misoperation during maintenance, thereby triggering the return device, a fixing sleeve 811 is mounted on the mounting sleeve 801, the fixing sleeve 811 is located between the mounting sleeve 801 and the first fixing sleeve 703, threads are provided on the top of the fixing sleeve 811, a threaded hole 812 is provided on the bottom of the mounting sleeve 801, and the mounting sleeve 801 is in threaded connection with the fixing sleeve 811. The fixing sleeve 811 may be fixedly installed on the first fixing sleeve 703, and through the screw structure, the interval between the installation sleeve 801 and the second fixing sleeve 704 may be adjusted, and when overhauling, the interval may be adjusted to have a larger operation space, so that the erroneous operation is prevented from triggering the return device. And in operation, the proper adjustment of the interval between the mounting sleeve 801 and the second fixing sleeve 704 can realize that when the second contact arm begins to incline outwards due to failure of the memory spring, even if the return device is triggered, the return device is tightly propped against the second contact arm, so that the occurrence of short circuit is prevented.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims (6)
1. The high-voltage isolating switch is characterized by comprising a bottom frame (1), a first support (2) and a second support (3) which are correspondingly arranged at two ends of the bottom frame (1), a contact arm (4) arranged on the first support (2) through a rotating shaft (5) and a contact piece (9) arranged on the second support (3), wherein a jacking device is arranged at one side, close to the contact piece (9), of the contact arm (4); the contact arm (4) comprises a first contact arm (401) and a second contact arm (402) which are arranged in parallel, and the first contact arm (401) and the second contact arm (402) are connected to the rotating shaft (5);
the jacking device comprises a bolt (701) arranged between a first contact arm (401) and a second contact arm (402) and a nut (702) arranged at the end part of the bolt (701), wherein the bolt (701) extends out of the second contact arm (402), a memory spring (705) is arranged between the nut (702) and the second contact arm (402), and the memory spring (705) is sleeved on the bolt (701);
a first fixing sleeve (703) is arranged on the inner side of the nut (702), a second fixing sleeve (704) is arranged on the outer side of the second contact arm (402), the first fixing sleeve (703) and the second fixing sleeve (704) are sleeved on the bolt (701), and the memory spring (705) is arranged between the first fixing sleeve (703) and the second fixing sleeve (704);
a return device for pushing the second contact arm (402) back to the original position when the memory spring (705) fails is sleeved on the bolt (701) between the first fixing sleeve (703) and the second fixing sleeve (704);
the return device comprises a mounting sleeve (801) sleeved on a bolt (701), an energy storage cavity (802) with high-pressure gas, an action cavity (804) facing a second fixing sleeve (704) and a piston rod (806) arranged in the action cavity (804), wherein the inner side end of the piston rod (806) is in sealing contact with the inner wall of the action cavity (804), a baffle plate (810) is arranged between the energy storage cavity (802) and the action cavity (804), a stop block (809) is fixedly connected to the outer side end of the baffle plate (810), and the upper end face of the stop block (809) gradually inclines upwards from inside to outside;
a through groove (807) is formed in one side of the mounting sleeve (801), a push rod (808) is arranged in the through groove (807), one end of the push rod (808) is fixedly connected with the piston rod (806), and the other end of the push rod corresponds to the stop block (809);
the memory spring (705) is a CuZnAl memory alloy spring.
2. A high voltage isolating switch according to claim 1, characterized in that said plunger (808) is 7-shaped and has an upper end fixedly connected to the piston rod (806).
3. A high voltage disconnector according to claim 1, characterized in that a blocking cover (805) is arranged at the inner side end of the piston rod (806), said blocking cover (805) is in sealing connection with the inner wall of the acting chamber (804), a stopper (813) is arranged on the side wall of said acting chamber (804), said stopper (813) is arranged at the inner side of the through groove (807) for preventing the piston rod (806) from coming out of the acting chamber (804) and for preventing the through groove (807) from communicating with the energy storage chamber (802).
4. A high voltage disconnector according to claim 1 or 2, characterized in that the bottom end of the plunger (808) corresponds to the shape of the upper end surface of the stopper (809).
5. A high voltage disconnector according to claim 3, characterized in that a sealing gasket (814) is arranged between the cover (805) and the energy storage chamber (802).
6. A high voltage disconnector according to claim 2, characterized in that a fixing sleeve (811) is mounted on the mounting sleeve (801), the fixing sleeve (811) being located between the mounting sleeve (801) and the first fixing sleeve (703), a screw thread being provided at the top of the fixing sleeve (811), a screw thread hole (812) being provided at the bottom of the mounting sleeve (801), the mounting sleeve (801) being in threaded connection with the fixing sleeve (811).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811572538.4A CN109411286B (en) | 2018-12-21 | 2018-12-21 | High-voltage isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811572538.4A CN109411286B (en) | 2018-12-21 | 2018-12-21 | High-voltage isolating switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109411286A CN109411286A (en) | 2019-03-01 |
| CN109411286B true CN109411286B (en) | 2023-08-18 |
Family
ID=65461146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811572538.4A Active CN109411286B (en) | 2018-12-21 | 2018-12-21 | High-voltage isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109411286B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115299857A (en) * | 2021-05-08 | 2022-11-08 | 国网河北省电力有限公司枣强县供电分公司 | Endoscope detection mirror capable of being operated in electrified mode |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4414449A (en) * | 1981-05-26 | 1983-11-08 | Brown Boveri Electric Inc. | Quick open and close disconnect switch |
| DE3237966A1 (en) * | 1982-10-13 | 1984-04-19 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | High-voltage isolating switch, especially a single-column isolating switch for large short-circuit currents |
| DE4015979A1 (en) * | 1990-05-18 | 1991-11-21 | Sachsenwerk Ag | Switch combination esp. for transformers on ring mains - incorporates vacuum switch which cannot be closed is load isolator with energy store is already engaged |
| CN101514946A (en) * | 2009-03-27 | 2009-08-26 | 同济大学 | System for testing time property of shape memory alloy spring |
| CN202405163U (en) * | 2011-12-18 | 2012-08-29 | 蒋岑 | High-pressure disconnection switch |
| CN204289200U (en) * | 2014-12-01 | 2015-04-22 | 国家电网公司 | Adopt the 10-35 kilovolt high pressure New Type Isolating Switch of memory alloy spring |
| CN105225879A (en) * | 2015-04-29 | 2016-01-06 | 苏州西脉记忆合金有限公司 | A kind of isolating switch intelligence contact |
| CN106952773A (en) * | 2017-04-30 | 2017-07-14 | 国网江苏省电力公司职业技能训练基地 | A kind of high-tension line disconnecting switch |
| CN108054047A (en) * | 2018-01-12 | 2018-05-18 | 国家电网公司 | A kind of Intelligent isolation switch |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010015286A1 (en) * | 2010-04-13 | 2011-10-13 | Siemens Aktiengesellschaft | Switch, in particular switch disconnector |
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2018
- 2018-12-21 CN CN201811572538.4A patent/CN109411286B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4414449A (en) * | 1981-05-26 | 1983-11-08 | Brown Boveri Electric Inc. | Quick open and close disconnect switch |
| DE3237966A1 (en) * | 1982-10-13 | 1984-04-19 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | High-voltage isolating switch, especially a single-column isolating switch for large short-circuit currents |
| DE4015979A1 (en) * | 1990-05-18 | 1991-11-21 | Sachsenwerk Ag | Switch combination esp. for transformers on ring mains - incorporates vacuum switch which cannot be closed is load isolator with energy store is already engaged |
| CN101514946A (en) * | 2009-03-27 | 2009-08-26 | 同济大学 | System for testing time property of shape memory alloy spring |
| CN202405163U (en) * | 2011-12-18 | 2012-08-29 | 蒋岑 | High-pressure disconnection switch |
| CN204289200U (en) * | 2014-12-01 | 2015-04-22 | 国家电网公司 | Adopt the 10-35 kilovolt high pressure New Type Isolating Switch of memory alloy spring |
| CN105225879A (en) * | 2015-04-29 | 2016-01-06 | 苏州西脉记忆合金有限公司 | A kind of isolating switch intelligence contact |
| CN106952773A (en) * | 2017-04-30 | 2017-07-14 | 国网江苏省电力公司职业技能训练基地 | A kind of high-tension line disconnecting switch |
| CN108054047A (en) * | 2018-01-12 | 2018-05-18 | 国家电网公司 | A kind of Intelligent isolation switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109411286A (en) | 2019-03-01 |
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