阅读说明：本技术 一种充气开关柜用固封极柱 (Aerify cubical switchboard with solid utmost point post that seals ) 是由 沈涛 袁博 付亚冲 于 2019-09-24 设计创作，主要内容包括：本发明涉及真空断路器技术领域,尤其涉及一种充气开关柜用固封极柱,解决了环氧树脂壳体易开裂；环氧树脂散热差；环氧树脂难降解,很不环保；浇铸固化及后期装配步骤繁琐；限制气箱内部空间；铜制零件过多价格昂贵,外部连接回路铜棒通过导电块,增大了接触不良发热隐患现有技术的问题。一种充气开关柜用固封极柱极柱外壳。本发明采用尼龙及玻璃纤维材料在保证强度的情况下,改善了外壳开裂的情况,减轻了因环氧树脂难易回收降解的污染程度；改善了固封极柱散热情况；提高极柱装配效率针对裸露导电件,提高绝缘性能。(The invention relates to the technical field of vacuum circuit breakers, in particular to an embedded pole for an inflatable switch cabinet, which solves the problem that an epoxy resin shell is easy to crack; poor heat dissipation of epoxy resin; the epoxy resin is difficult to degrade and is not environment-friendly; the steps of casting, curing and later assembling are complicated; limiting the internal space of the air box; too much expensive of copper part, the conducting block is passed through to external connection return circuit bar copper, has increased the problem of contact failure hidden danger prior art that generates heat. An embedded pole post shell for an inflatable switch cabinet. The invention adopts nylon and glass fiber materials, improves the cracking condition of the shell under the condition of ensuring the strength, and lightens the pollution degree caused by difficult recycling and degradation of epoxy resin; the heat dissipation condition of the solid-sealed polar pole is improved; improve utmost point post assembly efficiency and improve insulating properties to exposing electrically conductive.)

1. The utility model provides an aerify cubical switchboard with sealing utmost point post admittedly, its characterized in that includes by nylon PA66 or PA6 and glass fiber mixed material and add anti-oxidant and utmost point post shell (1) that silicone made as the auxiliary agent, the inside of utmost point post shell (1) is equipped with vacuum interrupter (3), it has silastic-layer (2) to fill between vacuum interrupter (3) surface and utmost point post shell (1), the one end nestification that vacuum interrupter (3) were kept away from in utmost point post shell (1) has sealed dish (7), wear to be equipped with insulating pull rod (6) between sealed dish (7) and vacuum interrupter (3), the inside of vacuum interrupter (3) is inserted to insulating pull rod (6) one end, insulating pull rod (6) other end runs through sealed dish (7) and delays to the outside, be equipped with cavity full skirt (10) between insulating pull rod (6) and utmost point post shell (1), utmost point post shell (1) surface is located between vacuum interrupter (3) and utmost point post cavity full skirt (10) regional utmost point post louvre (11) of having seted up, lower extreme inserts (5) before utmost point post shell (1) fixed surface is connected with, be connected with copper bar flexible coupling (4) between one side that preceding lower extreme inserts (5) and insulating pull rod (6) are close to vacuum interrupter (3), the surface of utmost point post shell (1) is located sealed dish (7) one side fixedly connected with utmost point post fixed mounting platform (8), four utmost point post fixed mounting holes (9) have been seted up to utmost point post fixed mounting platform (8) bottom.

2. The embedded pole for the gas-filled switch cabinet as claimed in claim 1, wherein the thickness of the pole fixing and mounting table (8) is twenty millimeters.

3. The embedded pole for the gas-filled switch cabinet according to claim 1, characterized in that four reinforcing ribs (12) are fixedly connected to the surface of the pole housing (1).

Technical Field

The invention relates to the technical field of vacuum circuit breakers, in particular to an embedded pole for an inflatable switch cabinet.

Background

Among 12kV distribution equipment, the inflatable switch cabinet is the mainstream equipment at present due to small volume and excellent performance. The solid-sealed polar pole is used as a main breaking element in the inflatable switch cabinet, and the mechanical strength, the electrical performance and the weather resistance of the solid-sealed polar pole must be ensured; the existing gas-filled switch cabinet solid-sealed pole generally comprises a pole insulation shell, a static end conductive block, an arc extinguish chamber silica gel layer, a copper bar flexible connection, a movable end conductive block, an insulation pull rod, a double-end screw rod for connecting the arc extinguish chamber and the insulation pull rod, a corrugated pipe, a sealing ring, a fixed insert and the like. Most of the insulating shell materials are epoxy resin, the vacuum arc-extinguishing chamber and other parts are cured and connected by the epoxy resin through an automatic pressure gel forming process (APG), the whole pole becomes an integral part, and the appearance is mostly elliptic cylindrical.

The existing epoxy resin shell is easy to crack, the difference between the expansion coefficients of the ceramic shell of the vacuum arc-extinguishing chamber and the epoxy resin is too large, and the cracking problem can be caused by improper operation or too fast change of environmental temperature during processing; the epoxy resin has poor heat dissipation, the whole gel molding coating thickness is large, the heat dissipation is poor, and if the thickness is reduced, the mechanical strength is reduced; the epoxy resin is difficult to degrade, the recycling value of waste materials and scrapped products is not high, the degradation period is long, and the environment is not protected; the number of parts is large, and the steps of casting, curing and later-stage assembly are complicated and time-consuming; the number of parts is large, so that the volume is large, and the internal space of the air box is limited; too many prices of copper parts are high, and the hidden danger of poor contact and heating is increased by the conducting block through the external connection loop copper rod.

Disclosure of Invention

The invention aims to provide an embedded pole for an inflatable switch cabinet, which solves the problems that an epoxy resin shell is easy to crack, the difference between the expansion coefficients of a ceramic shell of a vacuum arc-extinguishing chamber and epoxy resin is too large, and the cracking is caused by improper operation or too fast change of environmental temperature during processing in the prior art; the epoxy resin has poor heat dissipation, the whole gel molding coating thickness is large, the heat dissipation is poor, and if the thickness is reduced, the mechanical strength is reduced; the epoxy resin is difficult to degrade, the recycling value of waste materials and scrapped products is not high, the degradation period is long, and the environment is not protected; the number of parts is large, and the steps of casting, curing and later-stage assembly are complicated and time-consuming; the number of parts is large, so that the volume is large, and the internal space of the air box is limited; too much price of copper parts is expensive, and the hidden danger problem that bad contact generates heat is increased to the external connection return circuit bar copper through the conducting block.

In order to achieve the purpose, the invention adopts the following technical scheme:

an embedded pole for an inflatable switch cabinet comprises a pole shell made of nylon PA66 or PA6 and glass fiber mixed materials, and added with an antioxidant and silicone as additives, wherein a vacuum arc extinguish chamber is arranged inside the pole shell, a silicone rubber layer is filled between the surface of the vacuum arc extinguish chamber and the pole shell, one end of the pole shell, which is far away from the vacuum arc extinguish chamber, is embedded with a sealing disc, an insulating pull rod is arranged between the sealing disc and the vacuum arc extinguish chamber in a penetrating way, one end of the insulating pull rod is inserted into the vacuum arc extinguish chamber, the other end of the insulating pull rod penetrates through the sealing disc to delay to the outside, a pole cavity umbrella skirt is arranged between the insulating pull rod and the pole shell, a pole heat dissipation hole is arranged in a region, which is positioned between the vacuum arc extinguish chamber and the pole cavity umbrella skirt, a front lower end insert is fixedly connected, the surface of utmost point post shell is located sealed dish one side fixedly connected with utmost point post fixed mounting platform, and four utmost point post fixed mounting holes have been seted up to utmost point post fixed mounting platform bottom.

Preferably, the thickness of utmost point post fixed mounting platform is twenty millimeters.

Preferably, the surface of the pole shell is fixedly connected with four reinforcing ribs.

Compared with the prior art, the invention has the beneficial effects that: the nylon and glass fiber materials are adopted, so that the cracking of the shell is improved under the condition of ensuring the strength, and the pollution degree caused by difficult recycling and degradation of the epoxy resin is reduced; the heat dissipation condition of the solid-sealed polar pole is improved; improve utmost point post assembly efficiency and improve insulating properties to exposing electrically conductive.

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 description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a front partial cross-sectional view of FIG. 1;

fig. 3 is a schematic view of mounting the sealed pole socket.

In the figure: 1. a pole housing; 2. a silicone rubber layer; 3. a vacuum arc-extinguishing chamber; 4. copper bar flexible connection; 5. a front lower end insert; 6. an insulating pull rod; 7. sealing the disc; 8. a pole fixing and mounting table; 9. fixing and mounting holes for the pole columns; 10. pole cavity umbrella skirt; 11. the pole column is provided with heat dissipation holes; 12. reinforcing ribs; 13. a wire outlet sleeve; 14. a circuit breaker operating mechanism; 15. a female coupling seat; 16. a gas tank body; 17. an isolating switch; 18. and a feeder copper bar.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-3, an embedded pole for an inflatable switch cabinet comprises a pole shell 1 made of nylon PA66 or PA6 and glass fiber mixed material and added with antioxidant and silicone as additives, a vacuum arc-extinguishing chamber 3 is arranged inside the pole shell 1, a silicone rubber layer 2 is filled between the surface of the vacuum arc-extinguishing chamber 3 and the pole shell 1, a sealing disc 7 is nested at one end of the pole shell 1 away from the vacuum arc-extinguishing chamber 3, an insulating pull rod 6 is arranged between the sealing disc 7 and the vacuum arc-extinguishing chamber 3 in a penetrating manner, one end of the insulating pull rod 6 is inserted into the vacuum arc-extinguishing chamber 3, the other end of the insulating pull rod 6 extends through the sealing disc 7 to the outside in a delaying manner, a pole cavity shed 10 is arranged between the insulating pull rod 6 and the pole shell 1, a pole 11 is arranged in a region between the vacuum arc-extinguishing chamber 3 and the pole cavity shed 10 on the surface, preceding lower extreme inserts 5 and insulating pull rod 6 are connected with copper bar flexible coupling 4 between being close to one side of vacuum interrupter 3, and utmost point post shell 1's surface is located sealed dish 7 one side fixedly connected with utmost point post fixed mounting platform 8, and four utmost point post fixed mounting holes 9 have been seted up to utmost point post fixed mounting platform 8 bottom.

The embedded pole housing 1 is characterized in that a vacuum arc extinguish chamber 3, a silicon rubber layer 2 and a front lower connector insert are embedded and encapsulated into a whole, the whole is cylindrical, a square boss is arranged at the front part, the thickness of the housing is uniform, the joint is smooth in transition, the front and rear wiring ends are surrounded, the pole housing 1 is made of nylon PA66 or PA6 and glass fiber mixed materials, an auxiliary agent is antioxidant and silicone, the nylon materials can be recycled and degraded, the glass fibers increase the strength after molding, the auxiliary agent increases the fluidity of the materials by injection molding to improve the quality and the efficiency, the vacuum arc extinguish chamber 3 is cast in the pole housing 1, the silicon rubber layer 2 is arranged between the vacuum arc extinguish chamber 3 and the pole housing 1, the housing can be effectively prevented from cracking under the conditions of different expansion coefficients of the two materials and operation vibration, in order to ensure the insulating strength of the front lower connector and the rear connector of the embedded and, the front lower joint of the same pole is provided with a hole to form a passage, which can improve the heat dissipation problem of the solid-sealed pole, the front end of the inner cavity of the pole is provided with a pole cavity umbrella skirt 10, which increases the creepage distance and improves the insulation strength,

further, the thickness of utmost point post fixed mounting platform 8 is twenty millimeters, seals utmost point post horizontal installation admittedly, is fixed in the front bezel through the double-screw bolt and the nut subassembly of welding on the gas tank front bezel by utmost point post mounting hole, and for guaranteeing installation strength under the gravity, utmost point post fixed mounting platform 8 thickness is twenty millimeters best.

Furthermore, four reinforcing ribs 12 are fixedly connected to the surface of the pole housing 1.

The working principle is as follows: the embedded pole casing 1 is integrally cast, and in order to improve the insulating capability of the conductive part of the pole to a box body and other elements, the joint of the pole casing 1 is designed in a surrounding mode; the pole column shell 1 is made of a nylon PA66 or PA6 and glass fiber mixed material, the auxiliary agents are an antioxidant and silicone, and the specific gravity of each material can be referred as follows: 55% of nylon, 35% of glass fiber and 10% of auxiliary agent; placing the vacuum arc extinguish chamber 3, the silicone rubber layer 2 and the front lower end insert 5 in a forming die, uniformly mixing nylon, glass fiber and an auxiliary agent, heating and melting, injecting into the die according to a certain pressure, demoulding, and then cooling to normal temperature;

the vacuum arc-extinguishing chamber 3 in the pole is connected with the insulating pull rod 6 through a screw rod at the rear end of the insulating pull rod 6; the screw rod of the front end of the insulating pull rod 6 penetrates through a sealing disc 7 and can be connected with an external operating mechanism, the sealing disc 7 is installed in a sealing groove of a pole column shell 1, the sealing disc is tightly pressed with the inner face of a front plate of an installation gas box through a pole column and plays a role in sealing, the front end of a vacuum arc extinguish chamber 3 is moved to be connected with a copper bar flexible connection 4, a lower joint is led out from an inner cavity of the pole column to the front of the pole column and is fixed in an insert of the lower joint before the pole column through bolts, a loop is conductive and can be connected with the copper bar flexible connection 4, a conductive path is formed, and the vacuum arc extinguish chamber 3 is axially stressed, so that the.

When the device is used for an inflatable switch cabinet, the solid-sealed polar pole is horizontally installed, is fixed on a front plate of a gas tank body 16 through a polar pole installation hole by a stud and nut assembly welded on the front plate of the gas tank, is connected with a breaker operating mechanism 14 through a front screw rod of an insulating pull rod 6, can realize separation and combination operation by the operating mechanism, and is connected with a lead-out sleeve 13 through a polar pole lower feeder copper rod 18; the rear outlet end of the solid-sealed polar pole is connected with an isolating switch 17 through a feeder copper bar 18 on the polar pole, and the isolating switch 17 is connected with a female coupling seat 15 through a copper bar to form a complete loop in the box body.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.