CN220692688U - Environment-friendly permanent magnet ring main unit - Google Patents
Environment-friendly permanent magnet ring main unit Download PDFInfo
- Publication number
- CN220692688U CN220692688U CN202322144591.7U CN202322144591U CN220692688U CN 220692688 U CN220692688 U CN 220692688U CN 202322144591 U CN202322144591 U CN 202322144591U CN 220692688 U CN220692688 U CN 220692688U
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- CN
- China
- Prior art keywords
- permanent magnet
- insulating
- environment
- main unit
- friendly
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052802 copper Inorganic materials 0.000 claims abstract description 23
- 239000010949 copper Substances 0.000 claims abstract description 23
- 238000002955 isolation Methods 0.000 claims abstract description 21
- 230000003068 static effect Effects 0.000 claims abstract description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 25
- 239000012212 insulator Substances 0.000 claims description 14
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 4
- 230000016507 interphase Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 8
- 239000000306 component Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000008358 core component Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
Abstract
The utility model relates to an environment-friendly permanent magnet ring main unit, wherein an air box is filled with environment-friendly gas serving as an insulating medium; a direct-acting permanent magnet breaker and a three-station isolating switch are arranged in the gas tank from top to bottom, and the static end of a vacuum arc-extinguishing chamber in the direct-acting permanent magnet breaker is electrically connected with the three-station isolating switch through a copper bar; the bottom of the gas tank is provided with a wire inlet and outlet sleeve which is electrically connected with the three stations in an isolated manner through a copper rod; an operating mechanism which is rotationally connected with the direct-acting permanent magnet circuit breaker is fixed on the front plate of the air box; the air box front plate is fixedly connected with the three-station isolating switch in a rotating way, and is used for controlling the three-station isolating switch to switch among three stations of switching on, switching off and grounding. The beneficial effects are as follows: the environment-friendly characteristic of the ring main unit is realized; the method is stable and reliable, has long service life, reduces the occurrence probability of faults, and can achieve the isolation fracture withstand voltage of more than 50kV and the interphase and relative withstand voltage of more than 45kV under the condition that the width of the ring main unit is controlled to be 420 mm.
Description
Technical Field
The utility model relates to the field of ring main units, in particular to an environment-friendly permanent magnet ring main unit.
Background
The traditional ring main unit circuit breaker adopts a spring operating mechanism to switch on and switch off, the spring operating mechanism has a complex structure, large impulsive force, high component strength requirements and high component machining precision requirements.
Disclosure of Invention
The utility model aims to solve the technical problem of providing an environment-friendly permanent magnet ring main unit so as to overcome the defects in the prior art.
The technical scheme for solving the technical problems is as follows: an environmentally friendly permanent magnet ring main unit comprising: the air box is filled with environment-friendly gas serving as an insulating medium; a direct-acting permanent magnet breaker and a three-station isolating switch are sequentially arranged in the gas tank from top to bottom, and the static end of a vacuum arc-extinguishing chamber in the direct-acting permanent magnet breaker is electrically connected with the three-station isolating switch through a copper bar; the bottom of the gas tank is provided with a wire inlet and outlet sleeve which is electrically connected with the three stations in an isolated manner through a copper rod; the front plate of the air box is fixedly connected with the direct-acting permanent magnet breaker in a rotating way and is used for controlling an operating mechanism for opening the direct-acting permanent magnet breaker; the air box front plate is fixedly connected with the three-station isolating switch in a rotating way, and is used for controlling the three-station isolating switch to switch among three stations of switching on, switching off and grounding.
On the basis of the technical scheme, the utility model can be improved as follows.
Further, the direct-acting permanent magnet circuit breaker comprises a permanent magnet mechanism, an insulating shell, a vacuum arc-extinguishing chamber, a flexible connection, a load end copper bar and an insulating pull rod, wherein the insulating shell is fixed on a mechanism box of the permanent magnet mechanism, the vacuum arc-extinguishing chamber is fixed in the insulating shell, the load end copper bar is arranged below the vacuum arc-extinguishing chamber in a penetrating way on the insulating shell, one end of the insulating pull rod is fixed with a movable end of the vacuum arc-extinguishing chamber, and the other end of the insulating pull rod is fixed with a movable iron core assembly in the permanent magnet mechanism after penetrating through the load end copper bar; one end of the flexible connection is fixed with the movable end of the vacuum arc-extinguishing chamber through an upper screw rod of the insulating pull rod, the other end of the flexible connection is connected with the copper bar at the load end, and the operating mechanism is rotationally connected with a brake separating shaft in the permanent magnet mechanism.
Further, the three-position disconnecting switch includes: the switch frame rotates on the switch frame and is provided with an insulating main shaft connected with the isolation mechanism, a first supporting insulator is fixedly arranged above the insulating main shaft on the switch frame, the end part of the first supporting insulator is provided with an isolation static contact, a second supporting insulator is fixedly arranged below the insulating main shaft on the switch frame, the end part of the second supporting insulator is provided with an isolation moving contact, an insulating crank arm which is in sliding fit with the isolation moving contact is fixedly arranged on the insulating main shaft, and a grounding static contact is arranged below the isolation moving contact on the switch frame.
Further, a low pressure tank is arranged above the air tank.
Further, a base is arranged below the air box.
The beneficial effects of the utility model are as follows:
1) The environment-friendly gas is adopted to replace the original greenhouse gas, so that the environment-friendly characteristic of the ring main unit is realized;
2) Compared with the traditional vacuum circuit breaker, the direct-acting permanent magnet circuit breaker is simple in structure, stable and reliable, reduces the occurrence probability of faults and prolongs the mechanical life;
3) The single-phase independent three-station isolating switch is adopted, so that the interphase insulation of the ring main unit is remarkably improved, the safety of the ring main unit is ensured, and the potential safety hazard is reduced;
4) The structural layout of the whole ring main unit is optimized through electric field analysis, and under the condition that the width of the ring main unit is controlled to be 420mm, the isolation fracture withstand voltage can reach more than 50kV, and the inter-phase withstand voltage and the relative withstand voltage can reach more than 45 kV.
Drawings
FIG. 1 is a side view of an environment-friendly permanent magnet ring main unit according to the present utility model;
fig. 2 is a rear view of the environment-friendly permanent magnet ring main unit of the utility model;
fig. 3 is a front view of the environment-friendly permanent magnet ring main unit of the utility model;
FIG. 4 is a partial block diagram of the environment-friendly permanent magnet ring main unit of the utility model;
fig. 5 is an assembly view of the permanent magnet mechanism and the circuit breaker;
fig. 6 is a block diagram of a three-position disconnector.
In the drawings, the list of components represented by the various numbers is as follows:
1. the device comprises an air box, 2, a direct-acting permanent magnet circuit breaker, 210, a permanent magnet mechanism, 211, a movable iron core assembly, 212, a brake separating shaft, 213, a static iron core assembly, 214, a brake separating spring, 215, a coil, 220, an insulating housing, 230, a vacuum arc-extinguishing chamber, 240, a flexible connection, 250, a load end copper bar, 260, an insulating pull rod, 3, a three-station isolating switch, 310, a switch frame, 320, an insulating main shaft, 330, a first supporting insulator, 340, an insulating fixed contact, 350, a second supporting insulator, 360, an insulating movable contact, 370, an insulating crank arm, 380, a grounding fixed contact, 4, a wire inlet and outlet sleeve, 5, an operating mechanism, 6, an isolating mechanism, 7, a low-voltage box, 8 and a base.
Detailed Description
The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.
Example 1
As shown in fig. 1, 2, 3, 4, 5 and 6, an environment-friendly permanent magnet ring main unit includes: the air box 1 is filled with environment-friendly gas serving as an insulating medium, wherein the environment-friendly gas can be dry air or nitrogen;
the direct-acting permanent magnet circuit breaker 2 and the three-station isolating switch 3 are sequentially arranged in the gas tank 1 from top to bottom, wherein the static end of the vacuum arc-extinguishing chamber in the direct-acting permanent magnet circuit breaker 2 is electrically connected with the three-station isolating switch 3 through a copper bar, and the bottom of the gas tank 1 is provided with a wire inlet and outlet sleeve 4 electrically connected with the three-station isolating switch 3 through a copper bar;
an operating mechanism 5 which is rotationally connected with the direct-acting permanent magnet breaker 2 and is used for controlling the direct-acting permanent magnet breaker 2 to break is fixed on the front plate of the air box 1, and when the direct-acting permanent magnet breaker 2 needs to be manually broken, an operator can control the operating mechanism 5 to enable a movable iron core component in the direct-acting permanent magnet breaker 2 to be far away from a static iron core component;
the front plate of the air box 1 is fixedly provided with an isolation mechanism 6 which is rotationally connected with the three-station isolating switch 3 and is used for controlling the three-station isolating switch 3 to switch on, off and grounded.
Example 2
As shown in fig. 5, this embodiment is a further improvement of embodiment 1, and is specifically as follows:
the direct-acting permanent magnet circuit breaker 2 comprises a permanent magnet mechanism 210, an insulating shell 220, a vacuum arc-extinguishing chamber 230, a flexible connection 240, a load end copper bar 250 and an insulating pull rod 260, wherein the insulating shell 220 is fixed on a mechanism box of the permanent magnet mechanism 210, the vacuum arc-extinguishing chamber 230 is fixed in the insulating shell 220, the load end copper bar 250 is arranged below the vacuum arc-extinguishing chamber 230 in a penetrating way on the insulating shell 220, one end of the insulating pull rod 260 is fixed with a movable end of the vacuum arc-extinguishing chamber 230, and the other end of the insulating pull rod 260 is fixed with a movable iron core assembly 211 in the permanent magnet mechanism 210 after penetrating the load end copper bar 250; one end of the flexible connection 240 is fixed with the movable end of the vacuum arc-extinguishing chamber 230 through an upper screw rod of the insulation pull rod 260, the other end of the flexible connection 240 is connected with the load end copper bar 250, and the operating mechanism 5 is rotationally connected with the brake separating shaft 212 in the permanent magnet mechanism 210;
when the direct-acting permanent magnet circuit breaker 2 is manually opened, the opening shaft 212 is controlled to rotate through the operating mechanism 5, then a shifting block on the opening shaft 212 shifts a movable iron core assembly 211 in the permanent magnet mechanism 210 to move so as to separate the movable iron core assembly 211 from a static iron core assembly 213, and then an insulating pull rod 260 moves along with the movable iron core assembly 211 so as to disconnect a movable contact from a static contact in the vacuum arc extinguishing chamber 230, and at the moment, the direct-acting permanent magnet circuit breaker 2 completes manual opening;
when the coil 215 in the permanent magnet mechanism 210 is electrified with forward current, the movable iron core in the movable iron core assembly 211 is attracted with the static iron core in the static iron core assembly 213, at this time, the insulating pull rod 260 moves along with the movable iron core assembly 211 to enable the movable contact and the static contact in the vacuum arc-extinguishing chamber 230 to be closed, at this time, the direct-acting permanent magnet circuit breaker 2 completes closing, and meanwhile, the opening spring 214 of the permanent magnet mechanism 210 is compressed to store opening energy;
when the coil 215 in the permanent magnet mechanism 210 is electrified with reverse current, the movable iron core in the movable iron core assembly 211 and the static iron core in the static iron core assembly 213 repel each other, and the elasticity of the opening spring 214 is released, the movable iron core in the movable iron core assembly 211 and the static iron core in the static iron core assembly 213 are separated, at this time, the insulating pull rod 260 moves along with the movable iron core assembly 211 to disconnect the movable contact from the static contact in the vacuum arc extinguishing chamber 230, at this time, the direct-acting permanent magnet circuit breaker 2 completes opening.
Further, in the present embodiment, the insulating housing 220 adopts a segmented structure, and adjacent segments are detachably connected.
Example 3
As shown in fig. 6, this embodiment is a further improvement of the embodiment 1 or 2, and is specifically as follows:
the three-position disconnecting switch 3 includes: the switch frame 310, the insulating main shaft 320 connected with the isolation mechanism 6 is rotatably arranged on the switch frame 310, the first support insulator 330 is fixedly arranged above the insulating main shaft 320 on the switch frame 310, the end part of the first support insulator 330 is provided with the isolation fixed contact 340, the second support insulator 350 is fixedly arranged below the insulating main shaft 320 on the switch frame 310, the end part of the second support insulator 350 is provided with the isolation movable contact 360, the insulating main shaft 320 is fixedly provided with the insulation crank arm 370 which is in sliding fit with the isolation movable contact 360, the switch frame 310 is provided with the grounding fixed contact 380 below the isolation movable contact 360, the isolation fixed contact 340 is connected with the static end of the vacuum arc-extinguishing chamber in the direct-acting permanent magnet circuit breaker 2 through a copper bar, and the isolation movable contact 360 is connected with the wire inlet and outlet sleeve 4 through a copper bar;
the insulating main shaft 320 is controlled to rotate by the isolating mechanism 6, and when the insulating crank arm 370 rotates along with the insulating main shaft 320, the isolating moving contact 360 is caused to move, for example: the isolating movable contact 360 can be contacted with the isolating fixed contact 340 by rotating upwards, so that switching-on is realized;
the isolating movable contact 360 can be contacted with the grounding fixed contact 380 to realize grounding when the isolating movable contact rotates downwards;
and when the isolation movable contact 360 is not contacted with the isolation fixed contact 340 and the grounding fixed contact 380, the opening is realized.
Example 4
As shown in fig. 1, 2 and 3, this embodiment is a further improvement of the embodiment 1, 2 or 3, and specifically includes the following steps:
a low pressure tank 7 is provided above the air tank 1, and a base 8 is provided below the air tank 1.
While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.
Claims (5)
1. An environment-friendly permanent magnet ring main unit, which is characterized by comprising: the air box (1), the said air box (1) is filled with the environment-friendly gas as insulating medium; a direct-acting permanent magnet circuit breaker (2) and a three-station isolating switch (3) are sequentially arranged in the gas tank (1) from top to bottom, and the static end of a vacuum arc-extinguishing chamber in the direct-acting permanent magnet circuit breaker (2) is electrically connected with the three-station isolating switch (3) through a copper bar; the bottom of the air box (1) is provided with a wire inlet and outlet sleeve (4) which is electrically connected with the three-station isolating switch (3) through a copper rod; an operating mechanism (5) which is rotationally connected with the direct-acting permanent magnet breaker (2) and is used for controlling the opening of the direct-acting permanent magnet breaker (2) is fixed on the front plate of the air box (1); the front plate of the air box (1) is fixedly connected with the three-station isolating switch (3) in a rotating way, and an isolating mechanism (6) for controlling the three-station isolating switch (3) to switch on, off and grounded three stations is arranged on the front plate.
2. An environment-friendly permanent magnet ring main unit according to claim 1, wherein: the direct-acting permanent magnet circuit breaker (2) comprises a permanent magnet mechanism (210), an insulating shell (220), a vacuum arc-extinguishing chamber (230), a flexible connection (240), a load end copper bar (250) and an insulating pull rod (260), wherein the insulating shell (220) is fixed on a mechanism box of the permanent magnet mechanism (210), the vacuum arc-extinguishing chamber (230) is fixed in the insulating shell (220), the load end copper bar (250) is arranged below the vacuum arc-extinguishing chamber (230) in a penetrating way on the insulating shell (220), one end of the insulating pull rod (260) is fixed with a movable end of the vacuum arc-extinguishing chamber (230), and the other end of the insulating pull rod (260) is fixed with a movable iron core assembly (211) in the permanent magnet mechanism (210) after penetrating through the load end copper bar (250); one end of the flexible connection (240) is fixed with the movable end of the vacuum arc-extinguishing chamber (230) through an upper screw rod of the insulation pull rod (260), the other end of the flexible connection (240) is connected with the load end copper bar (250), and the operating mechanism (5) is rotationally connected with the brake separating shaft (212) in the permanent magnet mechanism (210).
3. An environment-friendly permanent magnet ring main unit according to claim 1, wherein: the three-position isolating switch (3) comprises: switch frame (310), rotate on switch frame (310) and set up insulating main shaft (320) that link to each other with isolation mechanism (6), switch frame (310) are gone up and are set up first support insulator (330) in insulating main shaft (320) top is fixed, first support insulator (330) tip sets up isolation static contact (340), switch frame (310) are gone up and are set up second support insulator (350) in insulating main shaft (320) below is fixed, second support insulator (350) tip sets up isolation moving contact (360), insulating main shaft (320) are gone up the fixed insulating crank arm (370) that set up and keep apart moving contact (360) sliding fit, switch frame (310) are gone up and are set up ground connection static contact (380) in isolation moving contact (360) below.
4. An environment-friendly permanent magnet ring main unit according to claim 1, wherein: a low-pressure tank (7) is arranged above the air tank (1).
5. An environment-friendly permanent magnet ring main unit according to claim 1, wherein: a base (8) is arranged below the air box (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322144591.7U CN220692688U (en) | 2023-08-09 | 2023-08-09 | Environment-friendly permanent magnet ring main unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322144591.7U CN220692688U (en) | 2023-08-09 | 2023-08-09 | Environment-friendly permanent magnet ring main unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220692688U true CN220692688U (en) | 2024-03-29 |
Family
ID=90403400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322144591.7U Active CN220692688U (en) | 2023-08-09 | 2023-08-09 | Environment-friendly permanent magnet ring main unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220692688U (en) |
-
2023
- 2023-08-09 CN CN202322144591.7U patent/CN220692688U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |