CN115332006B - Arc extinction device of direct-current isolating switch in cabinet - Google Patents
Arc extinction device of direct-current isolating switch in cabinet Download PDFInfo
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- CN115332006B CN115332006B CN202211249810.1A CN202211249810A CN115332006B CN 115332006 B CN115332006 B CN 115332006B CN 202211249810 A CN202211249810 A CN 202211249810A CN 115332006 B CN115332006 B CN 115332006B
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- shaft
- groove
- valve
- movable cutter
- direct current
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
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- Arc-Extinguishing Devices That Are Switches (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The invention discloses an arc extinction device of a direct current isolating switch in a cabinet, which comprises: the device comprises an insulating base, a first movable cutter valve and a second movable cutter valve, wherein the first movable cutter valve and the second movable cutter valve are rotatably arranged on the insulating base; the lower ends of the first movable cutter valve and the second movable cutter valve are fixedly sleeved with rotating pieces, the linkage mechanism is connected between the two rotating pieces, and the linkage mechanism comprises a traction shaft; the starting mechanism comprises a connecting ring and a connecting rod. The device has a simple structure, utilizes the breakdown effect of high current and voltage on air, so that the protection mechanism can extinguish the arc of the circuit, thereby playing the role of a direct current isolating switch in the protection cabinet, and after the broken air is discharged, the device can be used continuously for the next time.
Description
Technical Field
The invention belongs to the technical field of direct current isolating switches in cabinets, and particularly relates to an arc extinction device of a direct current isolating switch in a cabinet.
Background
The direct current isolating switch in the cabinet is used as a switch for preventing the alternating current and direct current from being disconnected, the direct current isolating switch is placed in a voltage cabinet for supplying power, the safety requirement on the voltage cabinet is higher and higher now, the geographical position of the voltage cabinet is lower, when the voltage cabinet is in a high voltage condition due to thunder or short circuit and the like, the direct current isolating switch can handle the short circuit problem, but when the current is overlarge, although the current can be timely powered off, the corresponding protection mechanism can be started when the short current is overlarge, the protection mechanism can enable the whole circuit to be disconnected to avoid the internal elements from being damaged, the normal operation of other equipment can be influenced by the whole disconnection of the circuit, workers are required to repair and replace the circuit after the circuit is disconnected, and certain loss can be caused by power failure in the process of waiting for repair.
Disclosure of Invention
Based on the technical problems in the background technology, the invention provides an arc extinction device of a direct current isolating switch in a cabinet.
The invention provides an arc extinction device of a direct current isolating switch in a cabinet, which comprises:
the device comprises an insulating base, a first movable cutter valve and a second movable cutter valve, wherein the first movable cutter valve and the second movable cutter valve are rotatably arranged on the insulating base;
the lower ends of the first movable cutter valve and the second movable cutter valve are fixedly sleeved with rotating pieces, the linkage mechanism is connected between the two rotating pieces, and the linkage mechanism comprises a traction shaft;
the starting mechanism comprises a connecting ring and a connecting rod, a mounting block is arranged between the connecting ring and the connecting rod, and the starting mechanism is connected with the second movable knife valve;
the bottom of the insulating base is provided with an insulating packaging box, a first groove and a second groove are formed in the packaging box, and the protecting mechanism is arranged in the packaging box;
the protection mechanism further comprises a spring, a coil and an iron core, wherein the spring is arranged in the second groove, the insulating support plate is wound on the iron core, the iron core is fixed on the inner wall of the first groove, one end of the spring is fixedly connected to the inner wall of the second groove and is electrically connected with the connecting rod, the other end of the spring is fixedly connected with a linkage shaft, the outer surface of the spring is sleeved with an insulating layer, the linkage shaft penetrates through the second groove to be inserted in the first groove in a sliding manner, the linkage shaft is connected with the coil through the connecting mechanism, and the starting mechanism is connected with a spring circuit in series;
the connecting mechanism comprises a protruding shaft and a fixed shaft which are fixedly connected to the tail end of the linkage shaft, one end of the coil is fixedly connected with the connecting shaft, the connecting shaft is fixedly connected with the fixed shaft, a contact block is arranged on the connecting shaft, and protruding points matched with the contact block are arranged on the protruding shaft.
Further, the surface of first movable knife valve and second movable knife valve is all fixed the sleeve that has cup jointed and is used for insulating protection, the upper end fixed mounting of first movable knife valve has first junction block, one side of first junction block is inserted and is equipped with first wiring board, the upper end fixed mounting of second movable knife valve has the second connecting block, one side of second connecting block is inserted and is equipped with the second wiring board, the one end that first wiring board kept away from first junction block is provided with the U type connecting plate, be provided with the contact on the inner wall of U type connecting plate, the terminal of second wiring board is inserted and is established in the U type connecting plate and offset with the contact.
Further, the link gear still includes two pivots of rotating and installing on the rotor, the spout has all been seted up at traction shaft's both ends, the one end that the rotor was kept away from to the pivot is fixed to be inserted and is established in the spout, two one side of rotor all is provided with the triangle pointed end, the pivot rotates and installs on the triangle pointed end, one of them the orientation position that is another triangle pointed end after the triangle pointed end rotates 90.
Further, one end of the connecting ring is sleeved on the second movable cutter valve, a placing groove is formed in the mounting block, a glass tube is arranged in the placing groove, air is filled in the glass tube, and the connecting rod is fixedly connected to the insulating base.
Further, the first groove and the second groove are both covered with a protective cover.
Compared with the prior art, the invention has the beneficial effects that:
1. the device has a simple structure, and utilizes the breakdown effect of high current and voltage on air, so that the protection mechanism can extinguish the arc of the circuit, thereby playing a role of protecting a direct current isolating switch in the cabinet, and the device can be used continuously for the next time after the broken air is discharged;
2. the device can effectively protect the circuit, and meanwhile, the internal element is not damaged, and the device can be used continuously after being subjected to short-term trimming, so that the influence caused by the integral power failure of the circuit is effectively avoided.
Drawings
Fig. 1 is a schematic diagram of a left side structure of an arc suppression device of a direct current isolating switch in a cabinet according to the present invention;
fig. 2 is a schematic diagram of the right side structure of an arc suppression device of a direct current isolating switch in a cabinet according to the present invention;
fig. 3 is a schematic diagram of a top view structure of an arc suppression device of a dc isolating switch in a cabinet according to the present invention;
FIG. 4 is a schematic view of the structure of the inside of the package;
fig. 5 is a schematic diagram of the structure at a in fig. 4.
In the figure: 1 an insulating base, 2 an insulating support plate, 3 a packaging box, 4 a first groove, 5 a second groove, 6 a connecting rod, 7 a rotating sheet, 8 a second moving knife valve, 9 a ceramic sleeve, 10 a first moving knife valve, 11 a mounting block, 12 a placing groove, 13 a glass tube, 14 a traction shaft, 15 a connecting ring, 16 a second connecting block, 17 a second wiring board, 18 a U type connecting board, 19 a contact, 20 a first wiring board, 21 a first connecting block, 22 a rotating shaft, 23 a sliding chute, 24 a spring, 25 a linkage shaft, 26 a fixed shaft, 27 a protruding shaft, 28 a coil, 29 an iron core, 30 a connecting shaft, 31 a contact block and 32 convex points.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1 to 5, an arc extinguishing device of a direct current disconnecting switch in a cabinet, the arc extinguishing device of the direct current disconnecting switch in the cabinet includes:
the insulating base 1 and the first moving knife valve 10 and the second moving knife valve 8 which are rotatably arranged on the insulating base 1, the insulating support plate 2 is fixedly arranged at the middle position on the insulating base 1, the first moving knife valve 10 and the second moving knife valve 8 are rotatably arranged on the insulating support plate 2, and the first moving knife valve 10 is in circuit communication with the second moving knife valve 8;
the lower ends of the first movable cutter valve 10 and the second movable cutter valve 8 are fixedly sleeved with rotating pieces 7, the linkage mechanism is connected between the two rotating pieces 7, and the linkage mechanism comprises a traction shaft 14;
the starting mechanism comprises a connecting ring 15 and a connecting rod 6, a mounting block 11 is arranged between the connecting ring 15 and the connecting rod 6, and the starting mechanism is connected with the second movable cutter valve 8;
the bottom of the insulating base 1 is provided with an insulating packaging box 3, a first groove 4 and a second groove 5 are formed in the packaging box 3, and the protection mechanism is arranged in the packaging box 3.
The outer surfaces of the first movable knife valve 10 and the second movable knife valve 8 are fixedly sleeved with a ceramic sleeve 9 for insulation protection, the upper end of the first movable knife valve 10 is fixedly provided with a first connecting block 21, one side of the first connecting block 21 is inserted with a first wiring board 20, the upper end of the second movable knife valve 8 is fixedly provided with a second connecting block 16, one side of the second connecting block 16 is inserted with a second wiring board 17, one end, far away from the first connecting block 21, of the first wiring board 20 is provided with a U-shaped connecting plate 18, the inner wall of the U-shaped connecting plate 18 is provided with a contact 19, and the tail end of the second wiring board 17 is inserted in the U-shaped connecting plate 18 and is propped against the contact 19; when the first movable blade valve 10 and the second movable blade valve 8 are rotated by the pushing of the linkage mechanism, so that the first wiring board 20 and the second wiring board 17 are rotated to the directions facing each other, the second wiring board 17 is inserted into the U-shaped connection board 18, and the contact 19 is brought into contact with the second wiring board 17, the electric connection effect between the first movable blade valve 10 and the second movable blade valve 8 is achieved.
The linkage mechanism further comprises two rotating shafts 22 rotatably arranged on the rotating plates 7, sliding grooves 23 are formed in two ends of the traction shaft 14, one end, away from the rotating plates 7, of each rotating shaft 22 is fixedly inserted into each sliding groove 23, one side of each rotating plate 7 is provided with a triangular tip, each rotating shaft 22 is rotatably arranged on each triangular tip, and one triangular tip is the oriented position of the other triangular tip after rotating for 90 degrees; the linkage mechanism formed by combining the traction shaft 14 and the rotating shaft 22 can drive one rotating piece 7 to move when the other rotating piece 7 rotates, and the second wiring board 17 and the U-shaped connecting board 18 are symmetrically arranged in the mutually facing surface due to the difference of 90 degrees between the two rotating pieces 7, so that the second wiring board 17 and the first wiring board 20 can rotate to the mutually facing state.
One end of a connecting ring 15 is sleeved on the second movable cutter valve 8, a placing groove 12 is formed in the mounting block 11, a glass tube 13 is mounted in the placing groove 12, air is filled in the glass tube 13, and the connecting rod 6 is fixedly connected to the insulating base 1; the connecting ring 15, the glass tube 13 and the connecting rod 6 are connected into a circuit, under the normal voltage and current conditions, the circuit is in a phrase state due to the fact that air is filled in the circuit, and when the current and the voltage are too large, the air in the circuit is broken down, and therefore the circuit is communicated.
The protection mechanism further comprises a spring 24, a coil 28 and an iron core 29, wherein the spring 24 is arranged in the second groove 5, the insulating support plate 2 is wound on the iron core 29, the iron core 29 is fixed on the inner wall of the first groove 4, one end of the spring 24 is fixedly connected to the inner wall of the second groove 5 and is electrically connected with the connecting rod 6, the other end of the spring 24 is fixedly connected with a linkage shaft 25, the outer surface of the spring 24 is sleeved with an insulating layer, the linkage shaft 25 penetrates through the second groove 5 to be inserted in the first groove 4 in a sliding manner, the linkage shaft 25 is connected with the coil 28 through a connecting mechanism, and the starting mechanism is connected with a spring 24 circuit in series; when the starting mechanism is energized, the spring 24 is also energized, the energized spring 24 will contract, and the linkage mechanism will be driven during the contraction, thereby connecting the coil 28 to the circuit.
The connecting mechanism comprises a convex shaft 27 and a fixed shaft 26 which are fixedly connected to the tail end of the linkage shaft 25, one end of the coil 28 is fixedly connected with a connecting shaft 30, the connecting shaft 30 is fixedly connected with the fixed shaft 26, a contact block 31 is arranged on the connecting shaft 30, and a convex point 32 matched with the contact block 31 is arranged on the convex shaft 27; when the linkage shaft 25 moves, the convex points 32 are driven by the convex shaft 27 to contact with the contact blocks 31, so that the coil 28 is connected into a circuit, the coil 28 generates reactance, the protection circuit is protected, and the first groove 4 and the second groove 5 are covered with protection covers.
When the voltage cabinet is in normal operation, when the second movable knife valve 8 and the first movable knife valve 10 are required to be connected, the rotation of one of the rotary plates 7 is realized through external equipment, when one of the rotary plates 7 rotates, the other rotary plate 7 is driven to rotate through the traction shaft 14, two ends of the traction shaft 14 are respectively and rotatably connected with the two rotary plates 7 through the rotation shaft 22, a chute 23 is formed in the rotation shaft 22, the length formed by combining the rotation shaft 22 and the traction shaft 14 is fixed, when one rotary plate 7 rotates, the other rotary plate 7 is driven to rotate, or when one rotary plate 7 rotates, the other rotary plate 7 is driven to rotate, in an initial state, the tail end of the second wiring board 17 fixedly connected with the upper end of the second movable knife valve 8 and the tail end of the first wiring board 20 fixedly connected with the upper end of the first movable knife valve 10 face each other, namely, when the second wiring board 17 at the upper end of the second movable knife valve 8 rotates 90 degrees clockwise through the rotation shaft 22, the second wiring board 17 at the left side is driven to rotate 90 degrees, the first wiring board 10 is driven to rotate anticlockwise through the traction shaft 14, the second wiring board 10 is connected with the second wiring board 17 and the first wiring board 18, and then the first wiring board is connected with the second wiring board 18 in a U-shaped connection state, and the first wiring board is contacted with the second wiring board 18;
when a circuit abnormality occurs, that is, when lightning strike or grounding occurs, a large current passes through the connecting ring 15, the excessive current passing through the second movable knife valve 8 is also passed through the gas filled in the placing groove 12, the gas in the placing groove 12 forms a short circuit state in a normal voltage and current state, the gas in the placing groove 12 is broken through by the abnormal high current, so that the connecting ring 15 and the connecting rod 6 form a circuit path state, the spring 24 connected with the connecting rod 6 passes through the current, the spring 24 after being electrified has magnetism and is attracted mutually and contracted because the spring 24 is in a spiral state, the length of the spring 24 is reduced, one end of the spring 24 away from the first groove 4 is fixedly connected on the inner wall of the second groove 5, the other end of the spring 24 is fixedly connected with the linkage shaft 25, the shrinkage of spring 24 can drive the universal driving shaft 25 to remove, the one end that the universal driving shaft 25 kept away from the spring 24 inserts and establishes in first recess 4, the removal of universal driving shaft 25 can drive protruding axle 27 and remove, protruding axle 27 of removal can make bump 32 and contact piece 31 contact offset, contact piece 31 passes through connecting axle 30 and coil 28, then universal driving shaft 25 is connected with coil 28, coil 28 will access the circuit, coil 28 winding is on iron core 29, the coil 28 after the circular telegram can produce great reactance, with the transient electric current that causes because of the thunderbolt etc. resists, thereby effectually play the effect of arc extinction, still can continue discharging after the air is broken down, because the air setting that breaks down is in the circuit, the circuit can continue to consume the electric energy in the protection use, then along with the electric quantity of air is consumed, the circuit also can resume normal condition, thereby actuating mechanism can use repeatedly.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (5)
1. The utility model provides an in-cabinet direct current isolator's arc suppression device which characterized in that, in-cabinet direct current isolator's arc suppression device includes:
the device comprises an insulation base (1) and a first movable cutter valve (10) and a second movable cutter valve (8) which are rotatably arranged on the insulation base (1), wherein an insulation support plate (2) is fixedly arranged at the middle position on the insulation base (1), the first movable cutter valve (10) and the second movable cutter valve (8) are rotatably arranged on the insulation support plate (2), and the first movable cutter valve (10) is in circuit communication with the second movable cutter valve (8);
the lower ends of the first movable knife valve (10) and the second movable knife valve (8) are fixedly sleeved with rotating pieces (7), the linkage mechanism is connected between the two rotating pieces (7), and the linkage mechanism comprises a traction shaft (14);
the starting mechanism comprises a connecting ring (15) and a connecting rod (6), a mounting block (11) is arranged between the connecting ring (15) and the connecting rod (6), and the starting mechanism is connected with the second movable knife valve (8);
the bottom of the insulating base (1) is provided with an insulating packaging box (3), a first groove (4) and a second groove (5) are formed in the packaging box (3), and the protection mechanism is arranged in the packaging box (3);
the protection mechanism further comprises a spring (24), a coil (28) and an iron core (29), wherein the spring (24) is installed in the second groove (5), the insulation supporting plate (2) is wound on the iron core (29), the iron core (29) is fixed on the inner wall of the first groove (4), one end of the spring (24) is fixedly connected to the inner wall of the second groove (5) and is electrically connected with the connecting rod (6), the other end of the spring (24) is fixedly connected with a linkage shaft (25), the outer surface of the spring (24) is sleeved with an insulation layer, the linkage shaft (25) is inserted in the first groove (4) in a sliding mode through the second groove (5), the linkage shaft (25) is connected with the coil (28) through a connecting mechanism, and the starting mechanism is connected with a circuit of the spring (24) in series;
the connecting mechanism comprises a protruding shaft (27) and a fixed shaft (26) which are fixedly connected to the tail end of the linkage shaft (25), one end of the coil (28) is fixedly connected with a connecting shaft (30), the connecting shaft (30) is fixedly connected with the fixed shaft (26), a contact block (31) is arranged on the connecting shaft (30), and a salient point (32) matched with the contact block (31) is arranged on the protruding shaft (27).
2. The arc suppression device of the direct current isolating switch in the cabinet according to claim 1, characterized in that the outer surfaces of the first movable knife valve (10) and the second movable knife valve (8) are fixedly sleeved with a ceramic sleeve (9) for insulation protection, a first connecting block (21) is fixedly arranged at the upper end of the first movable knife valve (10), a first connecting block (20) is inserted at one side of the first connecting block (21), a second connecting block (16) is fixedly arranged at the upper end of the second movable knife valve (8), a second connecting block (17) is inserted at one side of the second connecting block (16), a U-shaped connecting plate (18) is arranged at one end, far away from the first connecting block (21), of the first connecting block (20), a contact (19) is arranged on the inner wall of the U-shaped connecting plate (18), and the tail end of the second connecting block (17) is inserted in the U-shaped connecting plate (18) and is abutted to the contact (19).
3. The arc suppression device of the direct current isolating switch in the cabinet according to claim 1, wherein the linkage mechanism further comprises two rotating shafts (22) rotatably mounted on the rotating plate (7), sliding grooves (23) are formed in two ends of the traction shaft (14), one end, away from the rotating plate (7), of each rotating shaft (22) is fixedly inserted into each sliding groove (23), triangular tips are arranged on one side of each rotating plate (7), the rotating shafts (22) are rotatably mounted on the triangular tips, and one triangular tip is the oriented position of the other triangular tip after being rotated by 90 degrees.
4. The arc suppression device of the direct current isolating switch in the cabinet according to claim 1, wherein one end of the connecting ring (15) is sleeved on the second movable knife valve (8), a placing groove (12) is formed in the mounting block (11), a glass tube (13) is mounted in the placing groove (12), air is filled in the glass tube (13), and the connecting rod (6) is fixedly connected to the insulating base (1).
5. The arc suppression device of the direct current isolating switch in the cabinet according to claim 1, wherein the first groove (4) and the second groove (5) are covered with protective covers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211249810.1A CN115332006B (en) | 2022-10-12 | 2022-10-12 | Arc extinction device of direct-current isolating switch in cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211249810.1A CN115332006B (en) | 2022-10-12 | 2022-10-12 | Arc extinction device of direct-current isolating switch in cabinet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115332006A CN115332006A (en) | 2022-11-11 |
| CN115332006B true CN115332006B (en) | 2023-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211249810.1A Active CN115332006B (en) | 2022-10-12 | 2022-10-12 | Arc extinction device of direct-current isolating switch in cabinet |
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| Country | Link |
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| CN (1) | CN115332006B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206742737U (en) * | 2017-04-05 | 2017-12-12 | 珠海航天科创实业有限公司 | A kind of environmentally friendly gas insulation switch cabinet |
| CN106953264A (en) * | 2017-04-05 | 2017-07-14 | 珠海航天科创实业有限公司 | A kind of environmentally friendly gas insulation switch cabinet |
| CN107658173A (en) * | 2017-10-19 | 2018-02-02 | 武汉倍诺德开关股份有限公司 | A kind of electric railway disconnecting switch |
| CN113990636A (en) * | 2021-09-22 | 2022-01-28 | 吴冬枚 | Energy-saving transformer with automatic overload protection function |
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2022
- 2022-10-12 CN CN202211249810.1A patent/CN115332006B/en active Active
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| Publication number | Publication date |
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| CN115332006A (en) | 2022-11-11 |
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