CN112490060B - Five-prevention interlocking device for bus side three-station switch ring main unit contact scheme - Google Patents
Five-prevention interlocking device for bus side three-station switch ring main unit contact scheme Download PDFInfo
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- CN112490060B CN112490060B CN202011313352.4A CN202011313352A CN112490060B CN 112490060 B CN112490060 B CN 112490060B CN 202011313352 A CN202011313352 A CN 202011313352A CN 112490060 B CN112490060 B CN 112490060B
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- station
- notch
- grounding
- bayonet lock
- isolating
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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
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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
- H01H31/003—Earthing switches
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
The invention discloses a five-prevention interlocking device for a bus side three-station switch ring main unit connection scheme, which comprises a box body, a worm bolt, a No. 1 station grounding bayonet lock, a No. 2 station grounding bayonet lock, a No. 1 station isolating bayonet lock and a No. 2 station isolating bayonet lock; the worm bolt rotates in the box body or moves up and down; the worm bolt is provided with a No. 1 grounding notch, a No. 2 grounding notch, a No. 1 isolating notch and a No. 2 isolating notch which are respectively used for inserting corresponding four clamping pins; the No. 1 grounding notch and the No. 2 grounding notch are arranged on the left side of the worm bolt, and the No. 1 isolating notch and the No. 2 isolating notch are arranged on the right side of the worm bolt; a notch is arranged on one side of the worm bolt, when the notch rotates to one side of the corresponding clamping pin, the clamping pin on the other side is inserted into the notch, and when the corresponding switch is in a brake-off state, the worm bolt is limited not to move the notch; a zipper is arranged corresponding to each bayonet. The safety of line grounding can be ensured.
Description
Technical Field
The invention relates to the technical field of electrical equipment, in particular to a five-prevention interlocking device for a bus side three-station switch ring main unit connection scheme.
Background
In the scheme of a network distribution of the ring main unit, a circuit breaker unit with three-station isolation and grounding switches and an isolation unit without the circuit breaker switch are connected in one path, and the configuration mode is common.
In '12 kilovolt ring main unit (box) standardized design customization scheme' of 2019 national grid company, an equipment scheme of a three-station switch at a bus side is added. As shown in fig. 6, the difference between this scheme and the original line-side three-position switching scheme is represented by the closing sequence of the grounding switch, and the quint interlock specifically requires that the operation of removing the cable chamber door must be executable under the switch grounding state.
The line of the line side three-station connection scheme is shown in fig. 7, if a cable chamber door is taken down and a breaker switch is in an opening state, a grounding switch is switched on; as shown in fig. 8, if a cable chamber door is taken down, the grounding switch is first closed, and the switch of the closing circuit breaker is still operated, so that a requirement for a double interlock function is added. This requires engineers to retrofit the latching scheme of the bus-side three-position switch.
For the bus side three-station disconnecting switch, the three-station disconnecting switch comprises a No. 1 three-station switch (serial number), a No. 2 three-station switch (serial number) and a breaker switch (serial number), wherein the breaker switch is located in the middle of the circuit. Whether the whole line is connected or grounded, the circuit breaker switch is needed to be switched on. And, must guarantee that two three-position switch are in the same state (same isolation or same ground connection), circuit breaker switch just can close a floodgate, otherwise will appear ground connection short-circuit fault.
Disclosure of Invention
In view of this, an object of the embodiment of the present invention is to provide a five-prevention interlocking device for a bus-side three-position switch ring main unit connection scheme, which can ensure that a circuit breaker switch can be switched on only when two three-position switches are in the same state, thereby ensuring the safety of line grounding.
The embodiment of the invention provides a five-prevention interlocking device for a bus side three-station switch ring main unit connection scheme, which comprises a box body, a worm bolt, a No. 1 station grounding bayonet lock, a No. 2 station grounding bayonet lock, a No. 1 station isolating bayonet lock and a No. 2 station isolating bayonet lock.
Each clamping pin is connected with the worm bolt through an elastic piece.
The worm bolt rotates or moves up and down in the box body.
And a No. 1 grounding notch, a No. 2 grounding notch, a No. 1 isolation notch and a No. 2 isolation notch are formed in the worm bolt, and four corresponding bolts are respectively inserted into the four notches.
No. 1 ground connection notch with No. 2 ground connection notch sets up the left side of worm bolt, no. 1 keep apart the notch with No. 2 keeps apart the notch setting and is in right side on the worm bolt.
One side on the worm bolt is provided with a notch, when the notch rotates to one side of the corresponding clamping pin, the opposite side clamping pin is inserted into the notch, and when the corresponding bus side three-station switch is in a brake-off state, the worm bolt is limited to be immovable.
And a zipper is arranged corresponding to each bayonet lock, each bayonet lock is pushed to a position of being inserted into the worm groove by a reset spring when the corresponding switch is opened, and when the corresponding switch is closed, the bayonet lock is pulled by a pull rope to exit from the notch.
The embodiment of the invention provides a first possible implementation manner, wherein the device further comprises a position switch, wherein the position switch is used for recording the current state of the five-prevention interlocking device, and transmitting a signal to the electric control module when the state of a bayonet inserted into the worm bolt is changed, so that the electric control module and the unlocking or locking state of the five-prevention interlocking device keep synchronous.
The embodiment of the invention provides a second possible implementation manner, wherein two circles of notch rings are arranged on the plug pins.
Wherein, first notch circle is connected 1 ground connection notch and 1 isolation notch, and the left side supplies No. 1 station ground connection bayonet lock inserts, and the right side supplies No. 1 station isolation bayonet lock inserts.
Wherein, no. 2 ground connection notches and No. 2 isolation notches are connected to the second notch circle, and the left side supplies No. 2 station ground connection bayonet lock inserts, and the right side supplies No. 2 station isolation bayonet lock inserts.
The embodiment of the invention provides a third possible implementation manner, wherein a toggle button is arranged on the worm bolt, and the worm bolt is toggled to rotate or move up and down in the box body.
The embodiment of the invention provides a fourth possible implementation mode, wherein the notch faces to the left side of grounding, the No. 1 station grounding bayonet lock is grounded, and the No. 2 station grounding bayonet lock is grounded, the No. 1 station isolating bayonet lock is opened and the No. 2 station isolating bayonet lock is opened simultaneously, the five-prevention interlocking device can be unlocked, and the breaker switch can be switched on.
The embodiment of the invention provides a fifth possible implementation manner, wherein the gap faces to the left side of the grounding, the No. 1 station grounding bayonet lock is opened, the No. 2 station grounding bayonet lock is opened, the No. 1 station isolating bayonet lock is opened, the No. 2 station isolating bayonet lock is opened, the five-prevention interlocking device cannot be unlocked, and the breaker switch cannot be switched on.
The embodiment of the invention provides a sixth possible implementation mode, wherein the gap faces to the right side of the isolation, the grounding bayonet lock for the No. 1 station and the grounding bayonet lock for the No. 2 station are simultaneously switched off in the states that the isolating bayonet lock for the No. 1 station is switched on and the isolating bayonet lock for the No. 2 station is switched on, the five-prevention interlocking device can be unlocked, and the breaker switch can be switched on.
The embodiment of the invention provides a seventh possible implementation mode, wherein the notch faces to the left side of grounding, the grounding bayonet lock of the station 1 is grounded, the grounding bayonet lock of the station 2 is switched off, the isolating bayonet lock of the station 1 is switched off, the isolating bayonet lock of the station 2 is switched on or switched off, the five-prevention interlocking device cannot be unlocked, and the breaker switch cannot be switched on.
The embodiment of the invention provides an eighth possible implementation manner, wherein the gap faces to the left side of the grounding, the grounding bayonet lock for the No. 1 station is opened, the grounding bayonet lock for the No. 2 station is grounded, the isolating bayonet lock for the No. 1 station is closed or opened, the isolating bayonet lock for the No. 2 station is opened, the five-prevention interlocking device cannot be unlocked, and the breaker switch cannot be closed.
The embodiment of the invention has the beneficial effects that:
according to the invention, through the arrangement of the notch on one side, the breaker switch can be switched on only when the two three-station switches are in the same state, so that the safety of line grounding is ensured.
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 embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
The five-prevention interlocking device for the bus-side three-station switch ring main unit connection scheme is further described in detail with reference to the accompanying drawings and the specific implementation mode.
Fig. 1 is an external structural schematic diagram of a five-prevention interlocking device for a bus-side three-station switch ring main unit communication scheme of the invention;
fig. 2 is a schematic diagram of an internal structure of the five-prevention interlocking device for a bus-side three-position switch ring main unit connection scheme of the invention;
fig. 3 is a schematic structural diagram of a first state of a five-prevention interlocking device for a bus-side three-station switch ring main unit connection scheme of the invention;
fig. 4 is a structural schematic diagram of a fifth-prevention interlocking device used in a bus-side three-position switch ring main unit connection scheme according to the invention in a third state;
fig. 5 is a schematic structural diagram of a fourth state of the five-prevention interlocking device for a bus-side three-station switch ring main unit connection scheme of the invention;
FIG. 6 is a schematic diagram of the circuit configuration of the bus side three-position and line side three-position switches of the present invention;
FIG. 7 is a schematic diagram of a line side three-station communication scheme in accordance with the present invention;
fig. 8 is a schematic circuit structure diagram of a bus-side three-station communication scheme of the invention.
In the figure: a station No. 101-1 is grounded and clamped; the No. 102-1 station isolates the bayonet lock; a No. 201-2 station grounding bayonet lock; the No. 202 to No. 2 stations isolate the bayonet lock; 5, a box body; 6-worm bolt; 7-gap.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein can be arranged and designed in a wide variety of different configurations.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments and features of the embodiments described below can be combined with each other without conflict.
Referring to fig. 1 to 2, a first embodiment of the present invention provides a five-prevention interlocking device for a bus-side three-station switch ring main unit communication scheme, which includes a box body 5, a worm bolt 6, a No. 1 station grounding bayonet 101, a No. 2 station grounding bayonet 201, a No. 1 station isolating bayonet 102, and a No. 2 station isolating bayonet 202.
Each bayonet pin is connected with the worm bolt 6 through an elastic piece.
The worm bolt 6 rotates or moves up and down in the box body 5.
And the worm bolt 6 is provided with a No. 1 grounding notch, a No. 2 grounding notch, a No. 1 isolation notch and a No. 2 isolation notch, and four corresponding clamping pins are respectively inserted.
No. 1 ground connection notch with No. 2 ground connection notch sets up the left side of worm bolt 6, no. 1 keep apart the notch with No. 2 keeps apart the notch setting and is in the right side of worm bolt 6.
One side on the worm bolt 6 is provided with breach 7, when breach 7 rotated to one side of corresponding bayonet lock, made contralateral bayonet lock insert the notch, when the three station switch of corresponding bus side was in the separating brake state, the restriction worm bolt 6 can not remove.
Each clamping pin is provided with a zipper corresponding to each clamping pin, each clamping pin is pushed to the position where the worm groove is inserted by a reset spring when the corresponding switch is switched off, and when the corresponding switch is switched on, the clamping pin is pulled by a pull rope to exit from the notch.
The embodiment of the invention provides a first possible implementation manner, wherein the device further comprises a position switch, the position switch is used for recording the current state of the five-prevention interlocking device, and when the state of a bayonet inserted into the worm bolt 6 is changed, the position switch transmits a signal to the electric control module, so that the electric control module and the unlocking or locking state of the five-prevention interlocking device keep synchronous.
The embodiment of the invention provides a second possible implementation manner, wherein two circles of notch rings are arranged on the plug pins.
Wherein, first notch circle is connected 1 ground connection notch and 1 isolation notch, and the left side supplies No. 1 station ground connection bayonet lock inserts, and the right side supplies No. 1 station isolation bayonet lock inserts.
Wherein, no. 2 ground connection notches and No. 2 isolation notches are connected to the second notch circle, and the left side supplies No. 2 station ground connection bayonet lock insert, and the right side supplies No. 2 station isolation bayonet lock insert.
The embodiment of the invention provides a third possible implementation manner, wherein a toggle button is arranged on the worm bolt, and the worm bolt is toggled to rotate or move up and down in the box body.
Referring to fig. 3, an embodiment of the present invention provides a fourth possible implementation manner, where in the first state, the notch 7 faces to the left side of the ground, and in a state where the grounding bayonet lock 101 for the station No. 1 is grounded and the grounding bayonet lock 201 for the station No. 2 is grounded, the isolating bayonet lock 102 for the station No. 1 and the isolating bayonet lock 202 for the station No. 2 are opened at the same time, the five-prevention interlock device may be unlocked, and the breaker switch may be closed.
The embodiment of the invention provides a fifth possible implementation manner, wherein in the second state, the notch 7 faces to the left side of grounding, the station grounding bayonet lock No. 1 101 is opened, the station grounding bayonet lock No. 2 201 is opened, the station isolating bayonet lock No. 1 102 is opened, the station isolating bayonet lock No. 2 202 is opened, the five-prevention interlocking device cannot be unlocked, and the breaker switch cannot be switched on.
Referring to fig. 4, an embodiment of the present invention provides a sixth possible implementation manner, where in a third state, the notch 7 faces to the right side of the isolation, and in a state where the station 1 isolating bayonet 102 is closed and the station 2 isolating bayonet 202 is closed, the station 1 grounding bayonet 101 and the station 2 grounding bayonet 201 are opened at the same time, the five-prevention interlock device may be unlocked, and the breaker switch may be closed.
Referring to fig. 5, an embodiment of the present invention provides a seventh possible implementation manner, where in a fourth state, the notch 7 faces to the left side of the ground, the station 1 grounding bayonet 101 is grounded, the station 2 grounding bayonet 201 is opened, the station 1 isolating bayonet 102 is opened, the station 2 isolating bayonet 202 is closed or opened, the five-prevention interlock device cannot be unlocked, and the breaker switch cannot be closed.
The embodiment of the invention provides an eighth possible implementation manner, wherein in a fifth state, the notch 7 faces to the left side of grounding, the No. 1 station grounding bayonet 101 is opened, the No. 2 station grounding bayonet 201 is grounded, the No. 1 station isolating bayonet 102 is closed or opened, the No. 2 station isolating bayonet 202 is opened, the five-prevention interlocking device cannot be unlocked, and the breaker switch cannot be closed.
The embodiment of the invention has the beneficial effects that:
according to the invention, through the arrangement of the gap on one side, the breaker switch can be switched on when the two three-position switches are in the same state, so that the safety of line grounding is ensured.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundary of the appended claims, or the equivalents of such scope and boundary.
Claims (8)
1. A five-prevention interlocking device for a bus side three-station switch ring main unit connection scheme is characterized by comprising a box body, a worm bolt, a No. 1 station grounding bayonet lock, a No. 2 station grounding bayonet lock, a No. 1 station isolating bayonet lock and a No. 2 station isolating bayonet lock;
the worm bolt rotates in the box body or moves up and down;
the worm bolt is provided with a No. 1 grounding notch, a No. 2 grounding notch, a No. 1 isolating notch and a No. 2 isolating notch which are respectively used for inserting corresponding four clamping pins;
the No. 1 grounding notch and the No. 2 grounding notch are arranged on the left side of the worm bolt, and the No. 1 isolating notch and the No. 2 isolating notch are arranged on the right side of the worm bolt;
a notch is formed in one side of the worm bolt, when the notch rotates to one side of the corresponding clamping pin, the clamping pin on the other side is inserted into the notch, and when the corresponding bus-bar-side three-station switch is in a brake-off state, the worm bolt is limited to be immovable;
a zipper is arranged corresponding to each bayonet;
two circles of notch rings are arranged on the plug pins;
the first notch ring is connected with a No. 1 grounding notch and a No. 1 isolating notch, the grounding bayonet lock of the No. 1 station is inserted into the left side of the first notch ring, and the isolating bayonet lock of the No. 1 station is inserted into the right side of the first notch ring;
the second notch ring is connected with a No. 2 grounding notch and a No. 2 isolating notch, the grounding bayonet lock of the No. 2 station is inserted into the left side of the second notch ring, and the isolating bayonet lock of the No. 2 station is inserted into the right side of the second notch ring;
the five-prevention interlocking device further comprises a position switch, wherein the position switch is used for recording the current state of the five-prevention interlocking device, and transmitting a signal to the electrical control module when the state of the bayonet pin inserted into the worm bolt is changed, so that the electrical control module and the unlocking or locking state of the five-prevention interlocking device are kept synchronous.
2. The five-prevention interlocking device for the bus side three-position switch ring main unit communication scheme is characterized in that each clamping pin is connected with the worm bolt through an elastic piece.
3. The five-prevention interlocking device for the bus side three-position switch ring main unit communication scheme is characterized by further comprising a position switch, wherein the position switch is used for recording the current state of the five-prevention interlocking device, and transmitting a signal to the electrical control module when the state of a bayonet pin inserted into the worm bolt is changed, so that the electrical control module and the unlocking or locking state of the five-prevention interlocking device are kept synchronous.
4. The five-prevention interlocking device for the bus side three-position switch ring main unit communication scheme is characterized in that a poking button is arranged on the worm bolt, and the worm bolt is poked to rotate or move up and down in the box body.
5. The five-prevention interlocking device for the bus-side three-station switch ring main unit communication scheme is according to claim 1, wherein the notch faces to the grounding left side, the No. 1 station grounding bayonet lock is opened, the No. 2 station grounding bayonet lock is opened, the No. 1 station isolating bayonet lock is opened, the No. 2 station isolating bayonet lock is opened, the five-prevention interlocking device cannot be unlocked, and the breaker switch cannot be closed.
6. The five-prevention interlocking device for the bus-side three-station switch ring main unit connection scheme is according to claim 1, wherein the notch faces to the isolation right side, the station 1 isolation bayonet lock is closed, and the station 2 isolation bayonet lock is closed, the station 1 grounding bayonet lock and the station 2 grounding bayonet lock are opened at the same time, the five-prevention interlocking device can be unlocked, and the breaker switch can be closed.
7. The five-prevention interlocking device for the bus-side three-station switch ring main unit communication scheme is according to claim 1, wherein the gap faces to the left side of grounding, the grounding bayonet lock of the station 1 is grounded, the grounding bayonet lock of the station 2 is opened, the isolating bayonet lock of the station 1 is opened, the isolating bayonet lock of the station 2 is closed or opened, the five-prevention interlocking device cannot be unlocked, and the breaker switch cannot be closed.
8. The five-prevention interlocking device for the bus-side three-station switch ring main unit communication scheme is according to claim 1, wherein the gap faces the left side of the grounding, the grounding bayonet lock of the station 1 is opened, the grounding bayonet lock of the station 2 is grounded, the isolating bayonet lock of the station 1 is closed or opened, the isolating bayonet lock of the station 2 is opened, the five-prevention interlocking device cannot be unlocked, and the breaker switch cannot be closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011313352.4A CN112490060B (en) | 2020-11-20 | 2020-11-20 | Five-prevention interlocking device for bus side three-station switch ring main unit contact scheme |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011313352.4A CN112490060B (en) | 2020-11-20 | 2020-11-20 | Five-prevention interlocking device for bus side three-station switch ring main unit contact scheme |
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| Publication Number | Publication Date |
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| CN112490060A CN112490060A (en) | 2021-03-12 |
| CN112490060B true CN112490060B (en) | 2023-01-10 |
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| CN202011313352.4A Active CN112490060B (en) | 2020-11-20 | 2020-11-20 | Five-prevention interlocking device for bus side three-station switch ring main unit contact scheme |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106169391A (en) * | 2016-08-31 | 2016-11-30 | 中国西电电气股份有限公司 | A kind of chopper and the mechanical interlock mechanism of tri-station isolating switch |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02193506A (en) * | 1988-10-17 | 1990-07-31 | Fuji Electric Co Ltd | Disconnector interlocking device for switchboard |
| US5270503A (en) * | 1992-10-26 | 1993-12-14 | Frye James A | Electric circuit lock-out safety device |
| JP3142476B2 (en) * | 1995-12-18 | 2001-03-07 | 東光電気株式会社 | Switch |
| CN202871622U (en) * | 2012-09-12 | 2013-04-10 | 广东电网公司江门供电局 | Fully-mechanical-type five-protection isolator anti-misoperation mechanism for 10kV switch cabinet |
| DE102013205354B3 (en) * | 2013-03-26 | 2014-07-10 | Alstom Technology Ltd. | Electrical switchgear |
| CN105702518B (en) * | 2016-04-08 | 2018-12-11 | 南阳市鑫特电气有限公司 | High-voltage switch cabinet isolation switch and earthing switch interlock error operation proof mechanism |
| CN213340189U (en) * | 2020-11-20 | 2021-06-01 | 北京清畅电力技术股份有限公司 | Five-prevention interlocking device for bus side three-station switch ring main unit contact scheme |
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2020
- 2020-11-20 CN CN202011313352.4A patent/CN112490060B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106169391A (en) * | 2016-08-31 | 2016-11-30 | 中国西电电气股份有限公司 | A kind of chopper and the mechanical interlock mechanism of tri-station isolating switch |
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