CN210778387U - Novel pneumatic load switch - Google Patents
Novel pneumatic load switch Download PDFInfo
- Publication number
- CN210778387U CN210778387U CN201921287355.8U CN201921287355U CN210778387U CN 210778387 U CN210778387 U CN 210778387U CN 201921287355 U CN201921287355 U CN 201921287355U CN 210778387 U CN210778387 U CN 210778387U
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- Prior art keywords
- contact
- static contact
- moving contact
- wiring terminal
- fuse
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- 230000003068 static effect Effects 0.000 claims abstract description 34
- 238000004146 energy storage Methods 0.000 claims abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- 229910052802 copper Inorganic materials 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 12
- 229910001080 W alloy Inorganic materials 0.000 claims description 4
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 4
- 239000004332 silver Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 229920006305 unsaturated polyester Polymers 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000007731 hot pressing Methods 0.000 claims 1
- 238000010891 electric arc Methods 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000009826 distribution Methods 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 239000012212 insulator Substances 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 238000002955 isolation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model provides a novel pneumatics formula load switch, belongs to electric power transmission and distribution system switch electrical apparatus technical field, including fuse, inclined installation formula fuse clamp, transparent insulating boot, static contact bell jar, go up binding post, static contact, electrically conductive inflator and moving contact, moving contact insulator foot, frame, driving lever, main arbor, spring energy storage mechanism, trip shaft, earthing switch, lower binding post, operation interlocking device. The arc extinguishing device has the advantages of reasonable design, compact structure, stable and reliable switching on and off, rapid and reliable arc extinguishing, no electric arc burn on the main contact, long electric service life, safe and reliable operation, reliable interlocking, convenient operation, high insulation level, high protection grade, no maintenance and low manufacturing cost.
Description
Technical Field
The utility model belongs to the technical field of electric power transmission and distribution system switching device, especially, relate to a novel pressure gas formula load switch.
Background
The pneumatic load switch is an electric appliance with the function between a high-voltage circuit breaker and a high-voltage isolating switch, can close, bear and break current under the condition of a normal conductive loop or a specified overload condition, also has the capability of closing and breaking short-circuit current, has the advantages of large opening and breaking capability, safety, reliability, long electric service life, frequent operation, compact structure, small volume, light weight, low manufacturing cost, maintenance-free property and the like, is widely applied to ring network power supply or terminal, domain network construction transformation, industrial and mining enterprises, high-rise buildings, public facilities and the like, and plays the roles of distribution, control and protection of electric energy. However, the currently used pneumatic load switch has the defects of unreliable operating mechanism, incomplete three-phase breaking or closing phenomenon, which causes the main contact to be burned by electric arc, and the free gas during arcing easily causes the decrease of the insulation strength between the phase and the ground, so that the potential safety hazard exists, and the explosion of the electric appliance can be caused in serious cases, the fire is caused, and the safety of personnel and equipment is endangered.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the utility model provides a novel pressure gas formula load switch, because of structural design is unreasonable among the prior art, operating device is unreliable, the incomplete disjunction or closed phenomenon of three-phase appears often, leads to main contact to receive the electric arc burn, and free gas during arcing leads to the shortcoming and not enough of phase or ground dielectric strength reduction easily, and then provides a reasonable in design, compact structure, divide-shut brake reliable and stable, main contact does not receive the electric arc burn, the arc extinguishing is reliable novel pressure gas formula load switch rapidly.
The utility model provides a novel pneumatics formula load switch, characterized by: the device comprises a fuse, an obliquely-installed fuse clamp, a transparent insulating cover, a static contact bell-shaped cover, an upper wiring terminal, a static contact, a conductive air cylinder, a moving contact insulating seat, a frame, a shifting lever, a main cutter shaft, a spring energy storage mechanism, a tripping shaft, a grounding switch, a lower wiring terminal and an operation interlocking mechanism, wherein a main loop of the switch is formed by connecting the upper wiring terminal with the lower wiring terminal through the static contact, the conductive air cylinder and the moving contact; the grounding switch is connected with the ground cutter shaft; the rack is formed by stamping, bending and welding steel plates, and all functional components are fixed on the rack; the static contact bell-shaped cover and the moving contact insulating base are formed by SMC unsaturated polyester hot press, a static contact is arranged on the static contact bell-shaped cover, and a conductive air cylinder, a moving contact and an inclined fuse clip are arranged on the moving contact insulating base; the static contact comprises a static contact seat, a contact finger, an annular tension spring and an arc striking needle, wherein the static contact seat and the contact finger are processed by pure copper and then have silver-plated surfaces, the contact finger is enclosed into a plum blossom contact by the annular tension spring, the lower end of the arc striking needle is welded with copper-tungsten alloy and extends out of the plum blossom contact, and a screw rod of the arc striking needle, which extends out of the static contact seat, is used as an upper wiring terminal; the conductive air cylinder and the moving contact are arranged on the moving contact insulating seat, the conductive air cylinder is made of a red copper pipe, the surface of the conductive air cylinder is plated with silver, the upper end of the conductive air cylinder is press-fitted with an insulating nozzle, a fixed piston is arranged in the conductive air cylinder, the moving contact comprises a red copper threaded sleeve, a contact seat, a contact finger and an annular tension spring, and the contact finger is surrounded by the annular tension spring into a quincunx shape and keeps good contact with the conductive air cylinder; the inclined fuse clip is fixed on the moving contact insulating seat through a screw, one end of the inclined fuse clip is connected with the moving contact through a lead, and the other end of the inclined fuse clip is connected with a lower wiring terminal through a red copper bar; the operation interlocking mechanism is arranged on the right side or the left side of the rack.
Through the above design scheme, the utility model discloses following beneficial effect can be brought: the utility model provides a novel pneumatic load switch, has reasonable in design, compact structure, divide-shut brake adopts spring energy storage operating device to make the divide-shut brake speed not receive the influence of operating force size, divide-shut brake is reliable and stable, the incomplete disjunction or closed phenomenon of three-phase can not appear, the arc production contact and the striking needle in the arc control device all adopt the copper tungsten alloy, electric arc extinguishes in the isolation bell jar, the arc extinguishing is reliable rapidly, free gas during arcing can not lead to the reduction of looks or ground dielectric strength, long service life has, operation safe and reliable, the interlocking is reliable, high operation, the insulation level, the protection level is high, non-maintaining, advantage that the cost is low.
Drawings
The invention is further described with reference to the following drawings and detailed description:
fig. 1 is the structural schematic diagram of the novel pneumatic load switch of the present invention.
In the figure, 1-a fuse, 2-an inclined fuse clip, 3-a transparent insulating cover, 4-a static contact bell-shaped cover, 5-an upper wiring terminal, 6-a static contact, 7-a conductive gas cylinder and a movable contact, 8-a movable contact insulating seat, 9-a rack, 10-a deflector rod, 11-a main cutter shaft, 12-a spring energy storage mechanism, 13-a trip shaft, 14-a grounding switch, 15-a lower wiring terminal and 16-an operation interlocking mechanism.
Detailed Description
A novel pneumatic load switch is shown in figure 1 and comprises a fuse 1, an obliquely-installed fuse clip 2, a transparent insulating cover 3, a static contact bell-shaped cover 4, an upper wiring terminal 5, a static contact 6, a conductive air cylinder, a dynamic contact 7, a dynamic contact insulating base 8, a rack 9, a deflector rod 10, a main cutter shaft 11, a spring energy storage mechanism 12, a trip shaft 13, a grounding switch 14, a lower wiring terminal 15 and an operation interlocking mechanism 16.
The main circuit of the switch is formed by connecting an upper wiring terminal 5 with a lower wiring terminal 15 through a static contact 6, a conductive gas cylinder and a moving contact 7, a fuse 1 and an inclined fuse clip 2; the grounding switch 14 is connected with the ground cutter shaft.
The machine frame 9 is formed by stamping, bending and welding steel plates, the surface of the machine frame is subjected to plastic spraying treatment, all functional components are fixed on the machine frame 9, a transmission part and a spring energy storage mechanism 12 are arranged in the machine frame 9, the spring energy storage mechanism 12 passes through a closing spring, a separating spring, a self-locking device and a connecting plate to form a four-connecting-rod over-dead-point operating mechanism, an operator operates the opening and closing of a switch through an operation interlocking mechanism 16 on the side surface of the machine frame 9, the opening and closing speed is not influenced by the size of an operating force, and the opening and closing.
The static contact bell-shaped cover 4 and the moving contact insulating base 8 are formed by SMC unsaturated polyester hot press, the surface is smooth and clean, the strength is high, the creepage distance is enough, the static contact bell-shaped cover 4 plays a role in supporting a static contact 6 and restraining an arc burning space, the moving contact insulating base 8 plays a role in supporting a conductive air cylinder, a moving contact 7 and an inclined fuse clip 2, the transparent insulating cover 3 is formed by injection molding through high-strength PC materials, an isolation fracture is clear and visible, the explosion-proof function is achieved, the protection grade is improved, and the special design scheme is specific to the situation that a metal valve cannot be used in a ring network system.
The static contact 6 is composed of a static contact seat, a contact finger, an annular tension spring and an arc striking needle, the static contact seat and the contact finger are processed by pure copper and then have silver-plated surfaces, the contact finger is surrounded by the annular tension spring to form a plum blossom-shaped contact and keeps good coaxiality with an arc striking needle screw rod fixed at the center, the lower end of the arc striking needle is welded with copper-tungsten alloy and extends out of the plum blossom-shaped contact, the arc striking needle contact is contacted firstly during closing, the bulb of the arc striking needle is separated later during opening, the plum blossom-shaped contact is prevented from being burnt by electric arc, and the screw rod extending out of the static contact seat at the upper end of the.
The conductive air cylinder and the movable contact 7 are arranged on a movable contact insulating seat 8, the conductive air cylinder is made of a red copper pipe, the surface of the conductive air cylinder is plated with silver, the upper end of the conductive air cylinder is press-fitted with an insulating nozzle, a fixed piston is arranged in the conductive air cylinder, the movable contact consists of a red copper thread sleeve, a contact seat, a contact finger and an annular tension spring, the contact finger is surrounded into a quincunx shape by the annular tension spring and is always in good contact with the conductive air cylinder, and the conductive air cylinder and the movable contact 7 are driven by a main cutter shaft 11 to vertically and linearly move through the rotation of a telescopic insulating pull rod 10.
The fuse 1 and the obliquely-installed fuse clip 2 are arranged in parallel with the conductive gas cylinder, an opening of the obliquely-installed fuse clip 2 is designed to be an included angle of 38 ℃, the obliquely-installed fuse clip is particularly suitable for assembling and disassembling the fuse 1 during switch side installation, the obliquely-installed fuse clip 2 is fixed on the moving contact insulating base 8 through screws, one end of the obliquely-installed fuse clip is connected with the moving contact through a lead, and the other end of the obliquely-installed fuse clip is connected with the lower wiring terminal 15 through a red copper bar.
The operation interlocking mechanism 16 is arranged on the right side or the left side of the frame 9, is particularly suitable for being arranged on the side of a switch, and is greatly convenient for engineering technicians in the field to design and use.
Claims (1)
1. The utility model provides a novel pneumatics formula load switch, characterized by: the device comprises a fuse (1), an inclined fuse clip (2), a transparent insulating cover (3), a static contact bell-shaped cover (4), an upper wiring terminal (5), a static contact (6), a conductive air cylinder and a dynamic contact (7), a dynamic contact insulating seat (8), a rack (9), a deflector rod (10), a main knife shaft (11), a spring energy storage mechanism (12), a tripping shaft (13), a grounding switch (14), a lower wiring terminal (15) and an operation interlocking mechanism (16), wherein a main circuit of the switch is formed by connecting the upper wiring terminal (5) with the static contact (6), the conductive air cylinder and the dynamic contact (7), the fuse (1) and the inclined fuse clip (2) are connected with the lower wiring terminal (15); the grounding switch (14) is connected with a grounding cutter shaft; the rack (9) is formed by stamping, bending and welding steel plates, and all functional components are fixed on the rack (9); the static contact bell-shaped cover (4) and the moving contact insulating base (8) are molded by SMC unsaturated polyester hot pressing, a static contact (6) is arranged on the static contact bell-shaped cover (4), and a conductive gas cylinder, a moving contact (7) and an inclined fuse clip (2) are arranged on the moving contact insulating base (8); the static contact (6) comprises a static contact seat, a contact finger, an annular tension spring and an arc striking needle, wherein the static contact seat and the contact finger are processed by pure copper and then are plated with silver on the surface, the contact finger is enclosed into a plum blossom contact by the annular tension spring, the lower end of the arc striking needle is welded with copper-tungsten alloy and extends out of the plum blossom contact, and a screw rod of the arc striking needle, which extends out of the static contact seat, is used as an upper wiring terminal (5); the conductive gas cylinder and the moving contact (7) are arranged on a moving contact insulating seat (8), the conductive gas cylinder is made of a red copper pipe, the surface of the conductive gas cylinder is plated with silver, the upper end of the conductive gas cylinder is press-fitted with an insulating nozzle, a fixed piston is arranged in the conductive gas cylinder, the moving contact comprises a red copper threaded sleeve, a contact seat, a contact finger and an annular tension spring, and the contact finger is surrounded by the annular tension spring into a quincunx shape to be in good contact with the conductive gas cylinder; the inclined fuse clip (2) is fixed on the moving contact insulating base (8) through a screw, one end of the inclined fuse clip is connected with the moving contact through a lead, and the other end of the inclined fuse clip is connected with a lower wiring terminal (15) through a red copper bar; the operation interlocking mechanism (16) is arranged on the right side or the left side of the frame (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921287355.8U CN210778387U (en) | 2019-08-09 | 2019-08-09 | Novel pneumatic load switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921287355.8U CN210778387U (en) | 2019-08-09 | 2019-08-09 | Novel pneumatic load switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210778387U true CN210778387U (en) | 2020-06-16 |
Family
ID=71050050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921287355.8U Active CN210778387U (en) | 2019-08-09 | 2019-08-09 | Novel pneumatic load switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210778387U (en) |
-
2019
- 2019-08-09 CN CN201921287355.8U patent/CN210778387U/en active Active
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