CN110610832B - Sliding high-voltage isolating switch - Google Patents
Sliding high-voltage isolating switch Download PDFInfo
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- CN110610832B CN110610832B CN201910967145.1A CN201910967145A CN110610832B CN 110610832 B CN110610832 B CN 110610832B CN 201910967145 A CN201910967145 A CN 201910967145A CN 110610832 B CN110610832 B CN 110610832B
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- insulator
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- main shaft
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- 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
- H01H31/32—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 rectilinearly-movable contact
Abstract
The invention discloses a sliding high-voltage isolating switch, which comprises a first static insulator (1), a second static insulator (7), a movable insulator (4), a base (5) and a transmission mechanism, wherein the first static insulator is connected with the second static insulator through a sliding mechanism; a bottom plate (22) is arranged above the base (5), the first static insulator (1) and the second static insulator (7) are respectively fixed at two ends of the bottom plate (22) in the vertical direction, a first static contact (2) is arranged at the top end of the first static insulator (1), and a second static contact (6) is arranged at the top end of the second static insulator (7); the movable insulator (4) is arranged between the first static insulator (1) and the second static insulator (7), and the transmission mechanism is arranged in the base (5) and connected with and drives the movable insulator (3) to move left and right; the top end of the moving insulator (4) is provided with a rod-shaped moving contact (3), and the moving contact (3) moves left and right along with the moving insulator (4) to two ends to be respectively communicated with the first static contact (2) or the second static contact (6). The sliding type action mode of the main contact is adopted, the space required in the action process is effectively reduced, the arrangement of high-voltage equipment in a network side cabinet or a high-voltage electric box is facilitated under the condition of meeting the same electrical insulation capacity, and the size of the network side cabinet or the high-voltage electric box can be reduced.
Description
Technical Field
The invention relates to the technical field of mechanical structures, in particular to a sliding high-voltage isolating switch for rail locomotive vehicles.
Background
The high-voltage isolating switch is an important electric protection device in a high-voltage electric appliance system of a rolling stock. In order to reduce the influence of environmental factors on insulation discharge, the existing rolling stock arranges an isolating switch in a rolling stock network side cabinet or a vehicle high-voltage electric box during the design of a high-voltage system, which requires the miniaturization of the high-voltage isolating switch under the condition of meeting the same insulating capability so as to meet the requirement of in-car installation.
At present, the action mode of the main contact of the domestic existing high-voltage isolating switch is generally rotary, and is improved from the prior roof mounting structure, the requirement of the rotary action process of the main contact occupies a large space, and the main contact is difficult to arrange in a network side cabinet or a high-voltage electric box.
Disclosure of Invention
The invention aims to provide a sliding type high-voltage isolating switch, which adopts a main contact sliding type action mode, effectively reduces the space required by the action process, is favorable for arranging high-voltage equipment in a network side cabinet or a high-voltage electric box under the condition of meeting the same electrical insulation capacity, and can reduce the volume of the network side cabinet or the high-voltage electric box.
The purpose of the invention is realized by the following technical scheme:
a sliding high-voltage isolating switch comprises a first static insulator 1, a second static insulator 7, a moving insulator 4, a base 5 and a transmission mechanism;
a bottom plate 22 is arranged above the base 5, the first static insulator 1 and the second static insulator 7 are respectively fixed at two ends of the bottom plate 22 in the vertical direction, a first static contact 2 is arranged at the top end of the first static insulator 1, and a second static contact 6 is arranged at the top end of the second static insulator 7;
the movable insulator 4 is arranged between the first static insulator 1 and the second static insulator 7, and the transmission mechanism is arranged in the base 5 and connected with and drives the movable insulator 3 to move left and right;
the top end of the moving insulator 4 is provided with a rod-shaped moving contact 3, and the moving contact 3 moves left and right along with the moving insulator 4 to two ends to be respectively communicated with the first static contact 2 or the second static contact 6.
The transmission mechanism comprises a main shaft 16, a shifting fork shaft 11, a connecting rod 10 and a linear driving mechanism; a support plate 21 is fixed below the bottom plate 22, and long strip-shaped slide way long holes 24 which are parallel to each other in the left-right direction are respectively formed in the bottom plate 22 and the support plate 21;
the middle part of the shifting fork shaft 11 is hinged with the bottom plate 22 through a pin shaft in the vertical direction under the bottom plate 22, one end of the shifting fork shaft 11 is hinged with one end of the connecting rod 10, the other end is provided with a long strip-shaped pin shaft long hole 25,
the main shaft 16 is axially and vertically arranged in the slide way long hole 24 to move left and right, and the middle part of the main shaft passes through the pin shaft long hole 25; the movable insulator 4 is fixedly arranged at the top end of the main shaft 16;
the other end of the connecting rod 10 is connected with an actuating element of the linear driving mechanism and driven by the actuating element to move left and right, so that the shifting fork shaft 11 is driven to swing, the main shaft 16 is driven to move left and right in the slide way long hole 24, and the movable insulator 3 is driven to move left and right.
The linear driving mechanism comprises a cylinder 12 and a pneumatic control element, the pneumatic control element is connected with and controls the cylinder 12 to work, and a piston rod of the cylinder 12 is used as an actuating element of the linear driving mechanism to be connected with and drive the connecting rod 10.
The transmission mechanism further comprises a guide mechanism, and the guide mechanism comprises two sets of guide rails 23, an upper positioning plate 18 and a lower positioning plate 19;
the two sets of guide rails 23 are respectively fixed on two sides below the slideway long hole 24 of the bottom plate 22 and two sides above the slideway long hole 24 of the supporting plate 21; the upper positioning plate 18 and the lower positioning plate 19 are fixed to the upper and lower portions of the main shaft 16, respectively, and slide on the guide rails 23, respectively.
A rolling bearing 15 is arranged between the main shaft 16 and the slideway slot hole 24.
The transmission mechanism further comprises a signal state feedback mechanism, and the signal state feedback mechanism comprises a cam touch plate 17 and two microswitches 14;
the two micro switches 14 are respectively fixed at two ends of the supporting plate 21, the cam touch plate 17 is fixed on the main shaft 16 and moves left and right along with the main shaft 16, and the two ends of the cam touch plate respectively touch the micro switches 14.
The sliding high-voltage isolating switch also comprises a low-voltage connector 9 for providing low-voltage circuit connection.
According to the technical scheme provided by the invention, the sliding high-voltage isolating switch provided by the embodiment of the invention adopts a main contact sliding action mode, so that the space required by the action process is effectively reduced, the arrangement of high-voltage equipment in a network side cabinet or a high-voltage electric box is facilitated under the condition of meeting the same electrical insulation capacity, and the volume of the network side cabinet or the high-voltage electric box can be reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic perspective view of a sliding high-voltage isolating switch according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of a transmission mechanism of a sliding high-voltage isolating switch according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all references herein to "upper", "lower", "left" and "right" describing an orientation do not refer to that orientation unless otherwise specified, but merely for convenience of description, the orientation of the product may vary from one description to another. An orientation that would be understood by one of ordinary skill in the art without making any creative effort would be within the scope of the present invention.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Examples
As shown in fig. 1 to 2, a sliding high-voltage isolating switch is applied to high-voltage electrical isolation protection in a network side cabinet or a high-voltage electrical box of a rail transit vehicle such as a main railway, and the whole high-voltage isolating switch is installed in the locomotive network side cabinet or the high-voltage electrical box of a motor train unit through a base 5. The device comprises a first static insulator 1, a second static insulator 7, a movable insulator 4, a base 5 and a transmission mechanism; a bottom plate 22 is arranged above the base 5, the first static insulator 1 and the second static insulator 7 are respectively fixed at two ends of the bottom plate 22 in the vertical direction, a first static contact 2 is arranged at the top end of the first static insulator 1, and a second static contact 6 is arranged at the top end of the second static insulator 7; namely, the device comprises two groups of fixed contacts and one group of movable contacts.
The movable insulator 4 is arranged between the first static insulator 1 and the second static insulator 7, and the transmission mechanism is arranged in the base 5 and connected with and drives the movable insulator 3 to move left and right; the top end of the moving insulator 4 is provided with a rod-shaped moving contact 3, and the moving contact 3 moves left and right along with the moving insulator 4 to two ends to be respectively communicated with the first static contact 2 or the second static contact 6. And one group of static contacts is grounded, so that the function of a high-voltage grounding switch can be realized.
In this example, the transmission mechanism includes a main shaft 16, a shifting fork shaft 11, a connecting rod 10 and a linear driving mechanism; the linear driving mechanism comprises a cylinder 12 and a pneumatic control element, the pneumatic control element is connected with and controls the cylinder 12 to work, and a piston rod of the cylinder 12 is used as an actuating element of the linear driving mechanism to be connected with and drive the connecting rod 10. The pneumatic control element comprises a filter 8, a two-position five-way electromagnetic valve 13 and a conventional pipeline, all the parts are connected through an air pipe and air passage interface, compressed air enters the two-position five-way electromagnetic valve 13 after impurities are removed through the filter 8, and the piston rod of the driving cylinder 12 is driven to extend or contract by respectively controlling the power-on or power-off of electromagnetic coils at two ends of the two-position five-way electromagnetic valve 13; the movement of the piston rod of the cylinder 12 is transmitted to the connecting rod 10. The pneumatic control elements are mounted on the lower surface of the base plate 22.
A support plate 21 is fixed below the bottom plate 22, and long strip-shaped slide way long holes 24 which are parallel to each other in the left-right direction are respectively formed in the bottom plate 22 and the support plate 21; the middle part of the shifting fork shaft 11 is hinged with the bottom plate 22 below the bottom plate 22 through a pin shaft in the vertical direction, one end of the shifting fork shaft 11 is hinged with one end of the connecting rod 10, the other end of the shifting fork shaft is provided with a long strip-shaped pin shaft hole 25, the main shaft 16 is axially arranged in the slide way long hole 24 in the vertical direction and moves left and right, and the middle part of the main shaft passes through the pin shaft long hole 25; the top end of the main shaft 16 is fixedly provided with a movable insulator 4.
The distance from the hinged point of the shifting fork shaft 11 and the bottom plate 22 to the hinged point of the shifting fork shaft 11 and the connecting rod 10 is less than the distance from the hinged point of the shifting fork shaft 11 and the bottom plate 22 to the axis of the main shaft 16, so that a lever for amplifying the moving distance is formed.
The bottom plate 22 and the support plate 21 are used as a 'frame', the shifting fork shaft 11, the connecting rod 10 and the driving main shaft 16 are sliding blocks, and the sliding blocks form a rod mechanism with a rocker and a sliding block of a lever.
The other end of the connecting rod 10 is connected with an actuating element of a linear driving mechanism, namely a piston rod connected with the cylinder 12, and is driven by the piston rod of the cylinder 12 to move left and right, so that the shifting fork shaft 11 is driven to swing, the main shaft 16 is driven to move left and right in the slide way long hole 24, and the movable insulator 3 is driven to move left and right.
In addition, in this example, the transmission mechanism further includes a guide mechanism, and the guide mechanism includes two sets of guide rails 23, an upper positioning plate 18 and a lower positioning plate 19; the two sets of guide rails 23 are respectively fixed on two sides below the slideway long hole 24 of the bottom plate 22 and two sides above the slideway long hole 24 of the supporting plate 21; the upper positioning plate 18 and the lower positioning plate 19 are fixed to the upper and lower portions of the main shaft 16, respectively, and slide on the guide rails 23, respectively. And a better guiding function is achieved. A rolling bearing 15 is arranged between the main shaft 16 and the slideway slot hole 24, so that the phenomenon of blocking is effectively prevented.
In addition, in this example, the transmission mechanism further includes a signal state feedback mechanism, and the signal state feedback mechanism includes a cam touch plate 17 and two microswitches 14; the two micro switches 14 are respectively fixed at two ends of the supporting plate 21, the cam touch plate 17 is fixed on the main shaft 16 and moves left and right along with the main shaft 16, and the two ends of the cam touch plate respectively touch the micro switches 14. The state of the contact of the microswitch 14 is changed to form switching value signal output; the position state of the movable contact is transmitted to a control system of the rolling stock through a connected cable for related control.
In addition, in this example, the sliding high-voltage isolating switch further comprises a low-voltage connector 9 for providing a low-voltage circuit connection. If the low-voltage circuit is used for connecting the electromagnetic coils at the two ends of the two-position five-way electromagnetic valve 13 and cables of the contact terminals of the microswitch 14, the cables are integrated on the low-voltage connector 9, so that the control signal and the state feedback signal of the high-voltage isolating switch are input and output uniformly through the low-voltage connector, and external wiring and mistake proofing are facilitated.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A sliding high voltage isolator which characterized in that: the device comprises a first static insulator (1), a second static insulator (7), a moving insulator (4), a base (5) and a transmission mechanism;
a bottom plate (22) is arranged above the base (5), the first static insulator (1) and the second static insulator (7) are respectively fixed at two ends of the bottom plate (22) in the vertical direction, a first static contact (2) is arranged at the top end of the first static insulator (1), and a second static contact (6) is arranged at the top end of the second static insulator (7);
the movable insulator (4) is arranged between the first static insulator (1) and the second static insulator (7), and the transmission mechanism is arranged in the base (5) and connected with and drives the movable insulator (3) to move left and right;
a rod-shaped moving contact (3) is arranged at the top end of the moving insulator (4), and the moving contact (3) moves left and right along with the moving insulator (4) to two ends to be respectively communicated with the first static contact (2) or the second static contact (6);
the transmission mechanism comprises a main shaft (16), a shifting fork shaft (11), a connecting rod (10) and a linear driving mechanism; a support plate (21) is fixed below the bottom plate (22), and long strip-shaped slide way long holes (24) which are parallel to each other in the left-right direction are respectively formed in the bottom plate (22) and the support plate (21);
the middle part of the shifting fork shaft (11) is hinged with the bottom plate (22) through a pin shaft in the vertical direction under the bottom plate (22), one end of the shifting fork shaft (11) is hinged with one end of the connecting rod (10), the other end is provided with a long strip-shaped pin shaft long hole (25),
the main shaft (16) is axially and vertically arranged in the slide way long hole (24) to move left and right, and the middle part of the main shaft penetrates through the pin shaft long hole (25); the top end of the main shaft (16) is fixedly provided with a movable insulator (4);
the other end of the connecting rod (10) is connected with an actuating element of the linear driving mechanism and driven by the actuating element to move left and right, the shifting fork shaft (11) is driven to swing, the main shaft (16) is driven to move left and right in the slide way long hole (24), and the movable insulator (3) is driven to move left and right.
2. Sliding high-pressure isolating switch according to claim 1, characterized in that the linear driving mechanism comprises a cylinder (12) and a pneumatic control element, the pneumatic control element is connected with and controls the operation of the cylinder (12), and a piston rod of the cylinder (12) is connected with and drives the connecting rod (10) as an actuator of the linear driving mechanism.
3. Sliding high-voltage disconnector according to claim 2, characterized in that said transmission means further comprise guide means comprising two sets of guide rails (23), an upper positioning plate (18) and a lower positioning plate (19);
the two sets of guide rails (23) are respectively fixed on two sides below the slideway long hole (24) of the bottom plate (22) and two sides above the slideway long hole (24) of the supporting plate (21); the upper positioning plate (18) and the lower positioning plate (19) are respectively fixed at the upper part and the lower part of the main shaft (16) and respectively slide on the guide rail (23).
4. Sliding high-voltage disconnector according to claim 3, characterized in that a rolling bearing (15) is arranged between the main shaft (16) and the long slide hole (24).
5. Sliding high-voltage disconnector according to claim 2, characterized in that said transmission mechanism further comprises a signal state feedback mechanism comprising a cam contact plate (17) and two microswitches (14);
the two micro switches (14) are respectively fixed at two ends of the supporting plate (21), the cam touch plate (17) is fixed on the main shaft (16) and moves left and right along with the main shaft (16), and the two ends of the cam touch plate respectively touch the micro switches (14).
6. Sliding high voltage disconnector according to claim 1 or 2, further comprising a low voltage connector (9) providing a low voltage circuit connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910967145.1A CN110610832B (en) | 2019-10-11 | 2019-10-11 | Sliding high-voltage isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910967145.1A CN110610832B (en) | 2019-10-11 | 2019-10-11 | Sliding high-voltage isolating switch |
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| Publication Number | Publication Date |
|---|---|
| CN110610832A CN110610832A (en) | 2019-12-24 |
| CN110610832B true CN110610832B (en) | 2021-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910967145.1A Active CN110610832B (en) | 2019-10-11 | 2019-10-11 | Sliding high-voltage isolating switch |
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| CN (1) | CN110610832B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113539732B (en) * | 2021-08-05 | 2022-07-29 | 重庆德普电气有限公司 | Push-pull outdoor isolating switch |
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| CN2833857Y (en) * | 2005-11-11 | 2006-11-01 | 四川电器有限责任公司 | Single-phase electric isolating switch |
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| CN202977295U (en) * | 2012-03-06 | 2013-06-05 | 中能电气（福清）有限公司 | Bidirectional duel overtravel operation mechanism for three-position vacuum interrupter |
| CN204760304U (en) * | 2015-05-08 | 2015-11-11 | 国网冀北电力有限公司张家口供电公司 | Transformer substation uses isolator |
| CN106531531A (en) * | 2016-12-21 | 2017-03-22 | 国网湖南省电力公司 | Extra-high voltage and high-current ice-melting isolation switch |
| CN206672847U (en) * | 2017-04-21 | 2017-11-24 | 王新站 | It is a kind of to operate light non-maintaining disconnecting switch |
| CN209087669U (en) * | 2018-08-30 | 2019-07-09 | 山西天安翔宇电器有限公司 | A kind of high-voltage alternating current isolating switch |
| CN209118984U (en) * | 2018-12-18 | 2019-07-16 | 北京明科电通电力设备有限公司 | High voltage isolator component |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8987618B2 (en) * | 2012-06-05 | 2015-03-24 | Siemens Industry, Inc. | Non-load break isolating switch, voltage controllers, and assembly methods |
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2019
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| CN1805093A (en) * | 2004-12-14 | 2006-07-19 | 弗里茨德雷希尔&佐讷电器工程装置有限公司 | Disconnecting switch with lineraly moving contact |
| CN2833857Y (en) * | 2005-11-11 | 2006-11-01 | 四川电器有限责任公司 | Single-phase electric isolating switch |
| CN101540241A (en) * | 2008-03-21 | 2009-09-23 | 青岛特锐德电气有限公司 | Gear and rack type isolated switch |
| CN201352527Y (en) * | 2008-12-25 | 2009-11-25 | 中国北车集团大连机车车辆有限公司 | Electric locomotive high voltage separation switch |
| CN202977295U (en) * | 2012-03-06 | 2013-06-05 | 中能电气（福清）有限公司 | Bidirectional duel overtravel operation mechanism for three-position vacuum interrupter |
| CN202855605U (en) * | 2012-09-29 | 2013-04-03 | 山东泰开隔离开关有限公司 | Three-column horizontal double-fracture turnover-type outdoor high-voltage alternating-current disconnector |
| CN204760304U (en) * | 2015-05-08 | 2015-11-11 | 国网冀北电力有限公司张家口供电公司 | Transformer substation uses isolator |
| CN106531531A (en) * | 2016-12-21 | 2017-03-22 | 国网湖南省电力公司 | Extra-high voltage and high-current ice-melting isolation switch |
| CN206672847U (en) * | 2017-04-21 | 2017-11-24 | 王新站 | It is a kind of to operate light non-maintaining disconnecting switch |
| CN209087669U (en) * | 2018-08-30 | 2019-07-09 | 山西天安翔宇电器有限公司 | A kind of high-voltage alternating current isolating switch |
| CN209118984U (en) * | 2018-12-18 | 2019-07-16 | 北京明科电通电力设备有限公司 | High voltage isolator component |
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| CN110610832A (en) | 2019-12-24 |
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