CN112736752A - Isolator of aerify cabinet star connection and triangle-shaped wiring conversion - Google Patents
Isolator of aerify cabinet star connection and triangle-shaped wiring conversion Download PDFInfo
- Publication number
- CN112736752A CN112736752A CN202011561270.1A CN202011561270A CN112736752A CN 112736752 A CN112736752 A CN 112736752A CN 202011561270 A CN202011561270 A CN 202011561270A CN 112736752 A CN112736752 A CN 112736752A
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- switch
- phase
- isolating
- bus
- contact
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 17
- 239000012212 insulator Substances 0.000 claims description 7
- 238000002955 isolation Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 description 3
- 239000004519 grease Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The invention discloses an isolating switch for converting star connection and triangular connection of an inflatable cabinet, which comprises three groups of three-station isolating switches arranged in a lower air chamber of the inflatable cabinet, wherein the front end of a screw rod penetrates through a grounding contact support and then is connected with a converting body through a grounding bolt, the grounding bolt is fixed on the inner wall of a front plate of the lower air chamber, and the converting body is arranged on the outer wall of the front plate of the lower air chamber. The invention utilizes a three-station isolating switch to complete the conversion between star connection and triangular connection by adjusting the position of a lead screw in a lower air chamber of the gas-filled cabinet. The invention has compact structure, reasonable wiring layout, convenient operation and high reliability, reduces the volume of the inflatable cabinet and is convenient for cabinet combination with other cabinets.
Description
Technical Field
The invention relates to the technical field of high-voltage electricity, in particular to an isolating switch for switching star connection and triangular connection of an inflatable cabinet.
Background
With the continuous progress of science and technology, the requirements of human beings on power distribution products are higher and higher, and intelligence, high reliability, low cost and the like become the development direction of switch equipment. The star-delta conversion structure of the existing inflatable cabinet is usually realized by two groups of isolating switches, the structure occupies large space, the cabinet combination difficulty with other cabinets is caused, the wiring is complex, the production and the processing are time-consuming and labor-consuming, the production cost is increased, and the use by a user is not convenient when the inflatable cabinet is put into the market.
For example, patent CN201122928 discloses an automatic star-delta switching energy-saving distributor for a motor of a pumping well, which comprises a main circuit and a control circuit, wherein the main circuit comprises a combination switch, an alternating current contactor for power on and off, a delta connection switching alternating current contactor, a star connection switching alternating current contactor, a thermal relay and a capacitance compensator, and the control circuit comprises a comprehensive protector, a time relay, an intermediate relay, a stop button, a start button, a fuse and a single-phase switch. The invention can make the motor automatically and correspondingly adjust along with the change of the load during the operation, the load rate is more than 40 percent, and the operation is converted into the triangle connection method and the full voltage operation; when the motor is lightly loaded, the load factor is less than 40%, the star connection method is converted, and the winding runs under the voltage of 220V, so that the output power of the winding is optimally matched with the output power required by work, the power factor of the motor is improved, the running efficiency of the motor is improved, and the electricity-saving effect is achieved. But has the problems of complex structure and large volume of the device.
Disclosure of Invention
The invention aims to provide an isolating switch for switching star connection and delta connection of an inflatable cabinet, which solves the problem that the existing inflatable cabinet needs to be simultaneously provided with two groups of isolating switches to realize the switching of star connection and delta connection.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
an isolating switch for switching star connection and triangular connection of an inflatable cabinet comprises three groups of switch-on contact supports, isolating contact supports and grounding contact supports which are arranged in a lower air chamber of the inflatable cabinet and have the same structure, wherein the front end of a lead screw penetrates through the grounding contact supports and then is connected with a switching body through a grounding bolt, the grounding bolt is fixed on the inner wall of a front plate of the lower air chamber, and the switching body is arranged on the outer wall of the front plate of the lower air chamber;
when the rear end of the screw rod is contacted with an isolating contact finger arranged in an isolating contact support, an isolating position 1G in an isolating switch is closed, a cable output bus lapped at the isolating position 1G is communicated with inner cone insulators of two groups of cable outputs, a phase A, a phase B and a phase C are connected, and a phase X, a phase Y and a phase Z are in short circuit to form star connection;
when the rear end of the screw rod is in contact with a contact finger of a switch-on contact installed in a switch-on contact support, a switch-on position 2G in the isolating switch is closed, a contact bus lapped with the switch-on position 2G is communicated with a bus connector, a phase A is in short circuit with a phase Z, a phase B is in short circuit with a phase X, and a phase C is in short circuit with a phase Y to form triangular wiring.
Preferably, the length of the lead screw is 30-50cm, the front end of the lead screw is connected with a rotating shaft of the conversion body through a grounding bolt, the rotating shaft is connected with an output shaft of a motor, and the motor is electrically connected with the starting button.
Preferably, a bus lapping block is arranged on the lower side wall of the isolation contact support, the bus lapping block is connected with one end of a cable output bus, and the other end of the cable output bus is connected with the inner cone insulator.
Preferably, the rotating shaft of the conversion body is also connected with a handle.
The working process of the invention is as follows:
when the three-station isolating switch is used and under the condition of normal power supply, after the three-station isolating switch is ready, an operator presses down the starting button of the lead screw arranged on the front plate of the lower air chamber at the corresponding position, and when the indicating lamp is on, the motor drives the lead screw to rotate, so that the conversion of star connection or triangular connection is completed. When the power failure is maintained, the operating personnel drive the screw rod to rotate by utilizing the handle, and the maintenance operation of the equipment is completed.
The invention has the beneficial effects that:
the invention utilizes a three-station isolating switch to complete the conversion between star connection and triangular connection by adjusting the position of a lead screw in a lower air chamber of the gas-filled cabinet. The invention has compact structure, reasonable wiring layout, convenient operation and high reliability, reduces the volume of the inflatable cabinet and is convenient for cabinet combination with other cabinets.
Drawings
FIG. 1 is a schematic structural view of the present invention;
figure 2 is a cross-sectional view of a set of the isolating contact mount, the ground contact mount and the make contact mount of figure 1;
FIG. 3 is a schematic view of the isolation contact mount of FIG. 1;
FIG. 4 is a schematic diagram of the wiring connection of the present invention;
in the figure: 1. conversion body, 2, go up the air chamber, 3, lower air chamber, 4, switch-on contact support, 5, isolation contact support, 6, bus connector, 7, interior cone insulator, 8, contact bus, 9, cable output bus, 10, earth bolt, 11, lead screw, 12, isolation contact grease, 13, switch-on contact grease, 14, bus overlap joint piece, 15, lower air chamber front bezel, 16, earth contact support.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 4, the disconnecting switch for switching star connection and delta connection of an inflatable cabinet comprises three groups of switch-on contact supports 4, isolating contact supports 5 and grounding contact supports 16 which are arranged in a lower air chamber 3 of the inflatable cabinet and have the same structure, wherein the front end of a lead screw 11 penetrates through the grounding contact supports 16 and then is connected with a switching body 1 through a grounding bolt 10, the grounding bolt 10 is fixed on the inner wall of a front plate 15 of the lower air chamber, and the switching body 1 is arranged on the outer wall of the front plate 15 of the lower air chamber;
when the rear end of the screw rod 11 is contacted with an isolating contact finger 12 arranged in an isolating contact support 5, an isolating position 1G in an isolating switch is closed, a cable output bus 9 overlapped with the isolating position 1G is communicated with inner cone insulators 7 of two groups of cable outputs, phases A, B and C are connected, and phases X, Y and Z are in short circuit to form star connection;
when the rear end of the screw rod 11 is in contact with a switch-on contact finger 13 arranged in a switch-on contact support 13, a switch-on position 2G in the isolating switch is closed, a contact bus 8 lapped with the switch-on position 2G is communicated with a bus connector 6, an A phase is in short circuit with a Z phase, a B phase is in short circuit with an X phase, and a C phase is in short circuit with a Y phase, so that a triangular connection is formed.
The length of the screw rod 11 is 30-50cm, the front end of the screw rod 11 is connected with a rotating shaft of the conversion body 1 through a grounding bolt 10, the rotating shaft is connected with an output shaft of a motor, and the motor is electrically connected with a starting button.
And a bus lapping block 14 is arranged on the lower side wall of the isolation contact support 5, the bus lapping block 14 is connected with one end of a cable output bus 9, and the other end of the cable output bus 9 is connected with the inner cone insulator 7.
The rotating shaft of the conversion body 1 is also connected with a handle.
When the three-position isolating switch is used and under the condition of normal power supply, after the three-position isolating switch is ready, an operator presses down the starting button at the corresponding position of the lead screw 11 arranged on the front plate 15 of the lower air chamber, and when the indicating lamp is on, the motor drives the lead screw 11 to rotate, so that the conversion of star connection or triangular connection is completed. When the power failure is maintained, the operating personnel drives the screw rod 11 to rotate by utilizing the handle, and the maintenance operation of the equipment is completed.
The invention utilizes a three-station isolating switch to complete the conversion between star connection and triangular connection by adjusting the position of a lead screw in a lower air chamber of the gas-filled cabinet. The invention has compact structure, reasonable wiring layout, convenient operation and high reliability, reduces the volume of the inflatable cabinet and is convenient for cabinet combination with other cabinets.
Claims (4)
1. The utility model provides an aerify isolator of cabinet star connection and triangle-shaped wiring conversion which characterized in that: the gas-insulated switch-on switch-off switch-on switch-off switch-on switch-;
when the rear end of the lead screw (11) is contacted with an isolating contact finger (12) arranged in an isolating contact support (5), an isolating position 1G in an isolating switch is closed, a cable output bus (9) lapped at the isolating position 1G is communicated with inner cone insulators (7) of two groups of cable outputs, an A phase, a B phase and a C phase are connected, and an X phase, a Y phase and a Z phase are in short circuit to form star connection;
when the rear end of the screw rod (11) is in contact with a switch-on contact finger (13) arranged in a switch-on contact support (13), a switch-on position 2G in the isolating switch is closed, a contact bus (8) lapped at the switch-on position 2G is connected with a bus connector (6), an A phase is in short circuit with a Z phase, a B phase is in short circuit with an X phase, and a C phase is in short circuit with a Y phase to form triangular wiring.
2. The gas insulated switchgear star-connected and delta-connected transfer disconnector according to claim 1, wherein: the length of the lead screw (11) is 30-50cm, the front end of the lead screw (11) is connected with a rotating shaft of the conversion body (1) through a grounding bolt (10), the rotating shaft is connected with an output shaft of a motor, and the motor is electrically connected with a starting button.
3. An isolating switch for star and delta connection conversion of a gas insulated switchgear as claimed in claim 1 or 2, wherein: and a bus lapping block (14) is arranged on the lower side wall of the isolation contact support (5), the bus lapping block (14) is connected with one end of a cable output bus (9), and the other end of the cable output bus (9) is connected with the inner cone insulator (7).
4. The rated inflatable cabinet star-wired and delta-wired switch of claim 3, wherein: the rotating shaft of the conversion body (1) is also connected with the handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011561270.1A CN112736752A (en) | 2020-12-25 | 2020-12-25 | Isolator of aerify cabinet star connection and triangle-shaped wiring conversion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011561270.1A CN112736752A (en) | 2020-12-25 | 2020-12-25 | Isolator of aerify cabinet star connection and triangle-shaped wiring conversion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112736752A true CN112736752A (en) | 2021-04-30 |
Family
ID=75616131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011561270.1A Pending CN112736752A (en) | 2020-12-25 | 2020-12-25 | Isolator of aerify cabinet star connection and triangle-shaped wiring conversion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112736752A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201766007U (en) * | 2010-08-05 | 2011-03-16 | 四川电器集团有限公司 | Star-delta reversing switch device for transformer |
| CN102684568A (en) * | 2012-05-31 | 2012-09-19 | 襄垣县树元电器有限公司 | Star-like triangular delay conversion control device |
| CN104852592A (en) * | 2014-02-18 | 2015-08-19 | 三菱电机株式会社 | Three-phase alternating-current power supply switching circuit |
| CN109859980A (en) * | 2018-12-10 | 2019-06-07 | 河南平高通用电气有限公司 | Gas-filling cabinet and its direct action type three-station |
| CN111627782A (en) * | 2020-06-24 | 2020-09-04 | 正泰电气股份有限公司 | Combination of three-station disconnecting switch and circuit breaker suitable for inflating cabinet |
-
2020
- 2020-12-25 CN CN202011561270.1A patent/CN112736752A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201766007U (en) * | 2010-08-05 | 2011-03-16 | 四川电器集团有限公司 | Star-delta reversing switch device for transformer |
| CN102684568A (en) * | 2012-05-31 | 2012-09-19 | 襄垣县树元电器有限公司 | Star-like triangular delay conversion control device |
| CN104852592A (en) * | 2014-02-18 | 2015-08-19 | 三菱电机株式会社 | Three-phase alternating-current power supply switching circuit |
| CN109859980A (en) * | 2018-12-10 | 2019-06-07 | 河南平高通用电气有限公司 | Gas-filling cabinet and its direct action type three-station |
| CN111627782A (en) * | 2020-06-24 | 2020-09-04 | 正泰电气股份有限公司 | Combination of three-station disconnecting switch and circuit breaker suitable for inflating cabinet |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20210430 |