CN114023590B - Isolating switch locking device - Google Patents
Isolating switch locking device Download PDFInfo
- Publication number
- CN114023590B CN114023590B CN202111264052.6A CN202111264052A CN114023590B CN 114023590 B CN114023590 B CN 114023590B CN 202111264052 A CN202111264052 A CN 202111264052A CN 114023590 B CN114023590 B CN 114023590B
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- CN
- China
- Prior art keywords
- locking
- rod
- shell
- reversing switch
- switch
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- 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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- 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
- H01H31/02—Details
- H01H31/04—Interlocking mechanisms
- H01H31/10—Interlocking mechanisms for interlocking two or more switches
-
- 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
- H01H31/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
- H01H9/286—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a removable locking part acting directly on the operating part
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- Switch Cases, Indication, And Locking (AREA)
Abstract
The invention relates to an isolating switch locking device, which comprises a shell, an isolating switch, a locking button, a locking rod and a reversing switch, wherein a travel switch is arranged on the inner wall of the shell, the reversing switch penetrates through the shell to be connected with a rotating rod, the upper end of the locking rod is an inclined plane with high outer side and low inner side, and the part of the locking button outside the shell is in a conical body shape with thin outer side and thick inner side and matched with the upper end of the locking rod; the periphery of the locking rod is provided with a first locking spring, a baffle is fixed on the position of the reversing switch shaft outside the shell, two stop blocks are fixed on the baffle, the two stop blocks are arranged at intervals, and a positioning hole is formed in the reversing switch shaft between the two stop blocks. According to the isolating switch locking device, the state of the travel switch is changed after the locking button is pressed, so that the equipment is powered off (no load current is generated at the moment), the switching-on or switching-off operation can be performed at the moment, an electric arc is not generated, and the safety of the switching-on and switching-off operation of the isolating switch is ensured.
Description
Technical Field
The invention relates to a disconnecting switch locking device, in particular to a disconnecting switch locking device capable of ensuring that equipment is in a power-off state before switching on and switching off.
Background
The isolating switch is the most used electric appliance in the high-voltage switch electric appliance, and has a simpler working principle and structure, but has high requirements on working reliability due to large use amount, and has larger influence on the safe operation of the electric equipment. The mining equipment, especially the equipment with high reliability is required, and the safety design is of great importance; the isolating switch has the main characteristics of no arc extinguishing capability and can only switch on and switch off the circuit under the condition of no load current. The disconnector is used for each stage of voltage, for changing the circuit connection or isolating the line or device from the power supply, and has no current breaking capability, and can only be operated after the line is disconnected by other devices. The convenience and reliability of the operation of the interlocking mechanism of the isolating switch of the submerged equipment are significant for the use and operation of the submerged equipment and the later maintenance.
Disclosure of Invention
In order to overcome the defects of the technical problems, the invention provides the isolating switch locking device which can ensure that equipment is in a power-off state before switching on and switching off.
The isolating switch locking device comprises a shell, an isolating switch, a locking button, a locking rod and a reversing switch, wherein the isolating switch is arranged in the shell, and the locking button and the reversing switch are arranged on the shell; the isolating switch consists of a wiring copper bar, a knife blade, an insulating pull rod, a rotating rod and a wall penetrating terminal, wherein the wiring copper bar is arranged on the inner wall of the shell, the wall penetrating terminal penetrates through the shell, the lower end of the knife blade is hinged to the wiring copper bar, the middle part of the knife blade is hinged to the upper end of the insulating pull rod, the lower end of the insulating pull rod is hinged to the rotating rod, and the upper end of the knife blade is contacted with or separated from the wall penetrating terminal; the method is characterized in that: the locking button penetrates through the shell to be arranged, a travel switch for detecting whether the locking button is pressed is arranged on the inner wall of the shell, the reversing switch penetrates through the shell to be connected with the rotating rod, the locking button is located right above the reversing switch, and the locking rod is located between the reversing switch and the locking button; the upper end of the locking rod is an inclined plane with high outer side and low inner side, and the part of the locking button outside the shell is in a conical shape with thin outer side and thick inner side and matched with the upper end of the locking rod;
the periphery of the locking rod is provided with a first locking spring which always forces the upper end of the locking rod to be pressed to a locking button, the reversing switch is composed of a reversing switch shaft, a baffle is fixed on the position of the reversing switch shaft outside the shell, two stop blocks for limiting the rotation angle of the reversing switch shaft are fixed on the baffle, the two stop blocks are arranged at intervals, and a positioning hole for inserting the lower end of the locking rod is formed in the reversing switch shaft between the two stop blocks.
The isolating switch locking device comprises a locking contact, a second locking spring and a locking button rod, wherein the locking contact is connected with the locking button rod, the locking contact and the locking button rod are respectively positioned in the shell and outside, the second locking spring is positioned at the periphery of the locking button rod, and the second locking spring has a trend of always forcing the locking button rod to move outwards; the end of the locking contact is in a cone shape matched with a contact on the travel switch, and the end of the locking button rod is in a cone shape matched with the upper end of the locking rod.
The invention relates to a disconnecting switch locking device, wherein a locking bracket for supporting a locking rod is arranged on the outer surface of a shell, the locking bracket comprises a lower supporting plate and an upper supporting plate, through holes for the locking rod to pass through are formed in the lower supporting plate and the upper supporting plate, a first locking spring is positioned above the lower supporting plate, and an elastic check ring for a shaft for limiting the upper end of the first locking spring is arranged on the locking rod.
According to the isolating switch locking device, the periphery of the reversing switch shaft is provided with the reversing switch sleeve, the reversing switch sleeve is fixed on the shell, the inner end of the reversing switch shaft is fixedly connected with the rotating rod through the coupler, and the outer end of the reversing switch shaft is in a hexagonal prism shape.
According to the isolating switch locking device, the shell is provided with the cable inlet and the cable outlet.
The beneficial effects of the invention are as follows: the isolating switch locking device is characterized in that an isolating switch is arranged in a shell, a locking button, a reversing switch and a locking rod are arranged on the shell, a reversing switch shaft of the reversing switch is connected with a rotating rod on the isolating switch, the part of the locking button, which is positioned in the shell, is matched with a contact of a travel switch, the part of the locking button, which is positioned outside the shell, is in a conical shape matched with the upper end of the locking rod, and two stop blocks and two positioning holes are arranged on the reversing switch shaft; therefore, as the lower end of the locking rod is inserted into the positioning hole on the reversing switch shaft, the reversing switch cannot rotate, before the reversing switch is turned to perform switching-off and switching-on actions, the locking button needs to be pressed down, the locking rod is moved out of the positioning hole under the action of the first locking spring, the state of the travel switch is changed after the locking button is pressed down, the equipment is powered off (no load current at the moment), switching-on or switching-off operations can be performed at the moment, electric arcs cannot be generated, and the safety of the switching-on and switching-off operations of the isolating switch is ensured.
Drawings
FIG. 1 is a block diagram of a disconnector locking device according to the invention;
FIG. 2 is a cross-sectional view of the isolation switch lockout device of the present invention;
FIG. 3 is a block diagram of an isolating switch according to the present invention;
FIG. 4 is a schematic diagram showing the configuration of the latch button and travel switch of the present invention;
fig. 5 is a block diagram of a reversing switch in the present invention.
In the figure: the cable comprises a cable inlet, a cable outlet, a disconnecting switch, a wall penetrating terminal, a locking button, a locking rod, a first locking spring, a locking bracket, a reversing switch, a wiring copper bar, a knife blade, an insulating pull rod, a rotating rod, a coupler, a contact, a circlip, a reversing switch shaft, a 20 travel switch, a reversing switch sleeve, a baffle plate and a shell.
Detailed Description
The invention will be further described with reference to the drawings and examples.
As shown in fig. 1 and 2, a structural diagram and a sectional view of a locking device of an isolating switch of the present invention are respectively provided, fig. 4 shows a structural schematic diagram of a locking button matched with a travel switch in the present invention, the locking device of an isolating switch is composed of a housing 25, an isolating switch 3, a locking button 5, a locking rod 6, a reversing switch 9 and a travel switch 20, the housing 25 has fixing and supporting functions, the isolating switch 3 is arranged in the housing 25, and the locking button 5 and the reversing switch 9 are both arranged on the housing 25. The shell 25 is also provided with a cable inlet 1 and a cable outlet 2, and the cable penetrates into the shell 25 through the cable inlet 1 and the cable outlet 2 to realize connection with the isolating switch 3.
As shown in fig. 3, a structural diagram of the isolating switch in the present invention is provided, and the isolating switch is composed of a wiring copper bar 10, a blade 11, an insulating pull rod 12, a rotating rod 13 and a wall penetrating terminal 4, wherein the wiring copper bar 10 is fixed on a bottom plate of a housing 25 through a base, the wiring copper bar 10 is used for being connected with a power supply cable, the lower end of the blade 11 is hinged on the wiring copper bar 10, the middle part of the blade 11 is hinged on the upper end of the insulating pull rod 12, and the lower end of the insulating pull rod 12 is hinged on the rotating rod 13. The through-wall terminal 4 penetrates through the shell 25 to be arranged, and the through-wall terminal 4 is used for supplying power to electric equipment. The rotating rod 13 is fixedly connected with the reversing switch 9, so that the rotating rod 13 can be driven to rotate by rotating the reversing switch 9, and then the insulated pull rod 12 drives the switch blade 11 to rotate, so that the upper end of the switch blade 11 is contacted with or separated from the through-wall terminal 4, and the switching-off or switching-on operation is realized.
The blocking button 5 is shown directly above the reversing switch 9, with the blocking lever 6 being located between the reversing switch 9 and the blocking button 5. The shown locking button 5 consists of a locking contact 15, a second locking spring 16 and a locking button bar 17, the locking contact 15 being connected to the locking button bar 17 and arranged through the housing 25, the locking contact 15 being located inside the housing 25 and the locking button bar 17 being located outside the housing 25. The second locking spring 16 is provided at the outer periphery of the locking button bar 17, and the second locking spring 16 has a tendency to always urge the locking button bar 17 outward. The travel switch 20 is fixed on the inner surface of the housing 25 where the latch contact 15 is located, the end of the latch contact 15 is in a conical shape with a thin front end and a thick rear end matched with the contact of the travel switch 20, and when the latch button 5 is pressed down, the latch contact 15 is driven to move inwards and the state of the travel switch 20 is changed.
The upper end of the locking rod 6 is shown to be in a slope shape with a low inner side and a high outer side, and the end of the locking button rod 17 is in a conical shape with a thin outer side and a thick inner side and matched with the upper end of the locking rod 6. The shell 25 at the position of the locking rod 6 is fixed with a locking bracket 8 consisting of a lower supporting plate and an upper supporting plate, through holes for the locking rod 6 to pass through are arranged on the lower supporting plate and the upper supporting plate, and the through holes on the lower supporting plate and the upper supporting plate not only can limit the locking rod 6, but also can guide the locking rod 6 in the process of moving up and down. The first locking spring 7 is located on the periphery of the locking rod 6 above the lower supporting plate, and the elastic check ring 18 for a shaft which limits the upper end of the first locking spring 7 is arranged on the locking rod 6, so that the first locking spring 7 is always in a compressed state, the first locking spring 7 in the compressed state is driven by always forcing the locking rod 6 to move upwards, and the inclined surface of the upper end of the locking rod 6 is always clung to the conical surface of the locking button 5.
As shown in fig. 5, a structure diagram of the reversing switch in the present invention is shown, the reversing switch 9 is shown to be composed of a reversing switch shaft 19, a reversing switch sleeve 21 and a baffle 24, the reversing switch shaft 19 is inserted into an internal cavity of the reversing switch sleeve 21, the reversing switch shaft 19 can freely rotate, and the reversing switch sleeve 21 is used for penetrating through and fixing with the housing 25. The inner end of the reversing switch shaft 19 is fixedly connected with the rotating rod 13 through the coupler 14, and the outer end of the reversing switch shaft 19 is in a hexagonal prism shape. The baffle 24 is fixed on the reversing switch shaft 19, two baffle blocks 22 are fixed on the baffle 24 at intervals, two positioning holes 23 are formed in the reversing switch shaft 19 between the two baffle blocks 22, and the lower end of the locking rod 6 is inserted into the positioning holes 23 in a state that the locking button 5 presses the locking rod 6 downwards.
The working principle of the isolating switch locking device of the invention is as follows: assuming that the disconnecting switch 3 is currently in a closing state (i.e. the upper end of the blade 11 is in contact with the through-wall terminal 4), the second locking spring 16 forces the locking rod 6 to be inserted into the positioning hole 23 on the reversing switch shaft 19 due to the supporting effect of the locking button rod 17, and the reversing switch 9 at the moment is not rotatable; after the locking button 5 is pressed down, the locking rod 6 moves upwards, the locking rod 6 moves out of the positioning hole 23 in the reversing switch shaft 19, and at the moment, the reversing switch shaft 19 is rotated by using an inner hexagonal wrench; after the locking button 5 is pressed down, the state of the travel switch 20 is changed, and the control circuit cuts off the power supply to the equipment after detecting that the state of the travel switch 20 is changed, so that the disconnecting operation of the isolating switch 3 under the condition of power supply disconnection is ensured; when the reversing switch 9 rotates to the position and is blocked by the stop block 22 on the other side and cannot move, the lower end of the locking rod 6 can be inserted into the corresponding positioning hole 23 by loosening the pressed locking button 5. Similarly, the operation from opening to closing also requires the operation of pressing the lock button 5 first and then rotating the reversing switch 9. Therefore, the state of the travel switch is changed after the locking button is pressed, so that the equipment is powered off (no load current is generated at the moment), the switching-on or switching-off operation can be performed at the moment, an electric arc is not generated, and the safety of the switching-on and switching-off operation of the isolating switch is ensured.
Claims (5)
1. The isolating switch locking device comprises a shell (25), an isolating switch (3), a locking button (5), a locking rod (6) and a reversing switch (9), wherein the isolating switch is arranged in the shell, and the locking button and the reversing switch are arranged on the shell; the isolating switch consists of a wiring copper bar (10), a brake blade (11), an insulating pull rod (12), a rotating rod (13) and a wall penetrating terminal (4), wherein the wiring copper bar is arranged on the inner wall of the shell; the method is characterized in that: the locking button (5) penetrates through the shell to be arranged, a travel switch (20) for detecting whether the locking button is pressed down or not is arranged on the inner wall of the shell, the reversing switch (9) penetrates through the shell to be connected with the rotating rod, the locking button is located right above the reversing switch, and the locking rod (6) is located between the reversing switch and the locking button; the upper end of the locking rod is an inclined plane with high outer side and low inner side, and the part of the locking button outside the shell is in a conical shape with thin outer side and thick inner side and matched with the upper end of the locking rod;
the periphery of the locking rod is provided with a first locking spring (7) which always forces the upper end of the locking rod to be pressed to a locking button, the reversing switch (9) is composed of a reversing switch shaft (19), a baffle plate (24) is fixed on the position, which is positioned outside the shell, of the reversing switch shaft, two stop blocks (22) which limit the rotation angle of the reversing switch shaft are fixed on the baffle plate, the two stop blocks are arranged at intervals, and a positioning hole (23) for inserting the lower end of the locking rod is formed in the reversing switch shaft between the two stop blocks.
2. The isolating switch lockout device of claim 1, wherein: the locking button (5) consists of a locking contact (15), a second locking spring (16) and a locking button rod (17), wherein the locking contact is connected with the locking button rod, the locking contact and the locking button rod are respectively positioned in the shell (25) and outside, the second locking spring is positioned at the periphery of the locking button rod, and the second locking spring has a trend of always forcing the locking button rod to move outwards; the end of the locking contact is in a cone shape matched with a contact on a travel switch (20), and the end of the locking button rod is in a cone shape matched with the upper end of the locking rod (6).
3. The disconnector locking device according to claim 1 or 2, characterized in that: the outer surface of the shell (25) is provided with a locking support (8) for supporting the locking rod (6), the locking support is a lower support plate and an upper support plate, through holes for the locking rod to pass through are formed in the lower support plate and the upper support plate, the first locking spring (7) is located above the lower support plate, and the locking rod (6) is provided with an elastic check ring (18) for a shaft for limiting the upper end of the first locking spring (7).
4. The disconnector locking device according to claim 1 or 2, characterized in that: the periphery of the reversing switch shaft (19) is provided with a reversing switch sleeve (21), the reversing switch sleeve is used for being fixed on a shell (25), the inner end of the reversing switch shaft is fixedly connected with the rotating rod (13) through a coupler (14), and the outer end of the reversing switch shaft is in a hexagonal prism shape.
5. The disconnector locking device according to claim 1 or 2, characterized in that: a cable inlet (1) and a cable outlet (2) are formed in the shell (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111264052.6A CN114023590B (en) | 2021-10-28 | 2021-10-28 | Isolating switch locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111264052.6A CN114023590B (en) | 2021-10-28 | 2021-10-28 | Isolating switch locking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114023590A CN114023590A (en) | 2022-02-08 |
| CN114023590B true CN114023590B (en) | 2023-07-07 |
Family
ID=80058618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111264052.6A Active CN114023590B (en) | 2021-10-28 | 2021-10-28 | Isolating switch locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114023590B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5268543A (en) * | 1992-03-17 | 1993-12-07 | S&C Electric Company | Locking arrangement for disconnect switch |
| JP2008235223A (en) * | 2007-03-23 | 2008-10-02 | Chugoku Electric Power Co Inc:The | Disconnector, and wrong operation prevention member |
| CN201355594Y (en) * | 2008-11-27 | 2009-12-02 | 上海天灵开关厂有限公司 | Electric locking device |
| CN203192640U (en) * | 2013-03-08 | 2013-09-11 | 广州白云电器设备股份有限公司 | Interlocking device of high-voltage stationary cabinet |
| CA2889127A1 (en) * | 2014-04-22 | 2015-06-26 | Movex Innovation Inc. | Locking system for power line sectioning unit |
| WO2016041520A1 (en) * | 2014-09-18 | 2016-03-24 | 国家电网公司 | Operating mechanism and locking device thereof |
| WO2018095060A1 (en) * | 2016-11-25 | 2018-05-31 | 江苏省如高高压电器有限公司 | Locking device of isolation breaker |
| WO2021155854A1 (en) * | 2020-02-06 | 2021-08-12 | 华为技术有限公司 | Circuit breaker and power distribution box |
-
2021
- 2021-10-28 CN CN202111264052.6A patent/CN114023590B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5268543A (en) * | 1992-03-17 | 1993-12-07 | S&C Electric Company | Locking arrangement for disconnect switch |
| JP2008235223A (en) * | 2007-03-23 | 2008-10-02 | Chugoku Electric Power Co Inc:The | Disconnector, and wrong operation prevention member |
| CN201355594Y (en) * | 2008-11-27 | 2009-12-02 | 上海天灵开关厂有限公司 | Electric locking device |
| CN203192640U (en) * | 2013-03-08 | 2013-09-11 | 广州白云电器设备股份有限公司 | Interlocking device of high-voltage stationary cabinet |
| CA2889127A1 (en) * | 2014-04-22 | 2015-06-26 | Movex Innovation Inc. | Locking system for power line sectioning unit |
| WO2016041520A1 (en) * | 2014-09-18 | 2016-03-24 | 国家电网公司 | Operating mechanism and locking device thereof |
| WO2018095060A1 (en) * | 2016-11-25 | 2018-05-31 | 江苏省如高高压电器有限公司 | Locking device of isolation breaker |
| WO2021155854A1 (en) * | 2020-02-06 | 2021-08-12 | 华为技术有限公司 | Circuit breaker and power distribution box |
Non-Patent Citations (1)
| Title |
|---|
| 10kV配电装置母分间隔防误回路的改进;谢明海;吕亮;陈瑛;张旭阳;朱松涛;;浙江电力(01);全文 * |
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| Publication number | Publication date |
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| CN114023590A (en) | 2022-02-08 |
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