All-insulation environment-friendly gas ring main unit switch pole

Abstract

The utility model provides an all-insulation environment-friendly gas ring main unit switch pole which comprises a contact arm, a shell, a connecting rod and a lower insulation sleeve, the shell is installed on one side of the contact arm, an insulation pull rod is installed at the bottom of the contact arm, an adapter is installed at the bottom of the insulation pull rod, a static contact is installed in the adapter, and the connecting rod is connected to one side of the adapter. One side of the connecting rod is provided with the upper insulating sleeve, the upper insulating sleeve is internally provided with the power-in contact, the power-in contact is provided with the power-in tulip contact, the lower insulating sleeve is arranged on one side of the shell, the lower insulating sleeve is internally provided with the power-out contact, and the power-out contact is provided with the power-out tulip contact. The problem of poor contact caused by exposed contacts is effectively avoided, and the oxidation of the connecting copper bar is prevented on the premise of improving the insulating property, so that the performance of the switch is improved.

Description

Technical Field

[0001] The utility model relates to the field of switch poles, in particular to a fully insulated and environment-friendly gas ring main unit switch pole. Background Technique

[0002] The pole is a key part in the circuit breaker for connecting or disconnecting the circuit. It is usually made of conductive materials such as highly conductive copper or aluminum and is specially treated to improve its arc resistance, corrosion resistance and mechanical strength. The structure of the pole is exquisitely designed, including fixed contacts, moving contacts, insulators and necessary connecting components, etc. When the power system is operating normally, the contacts of the circuit breaker switch pole are in close contact to ensure the stable transmission of current; while in the fault state, the pole can quickly disconnect the circuit to ensure the smooth passage of current. Once a fault occurs in the system, such as a short circuit or overload, the circuit breaker will quickly respond and separate the moving contact from the fixed contact through the driving mechanism, thereby cutting off the faulty circuit and protecting the entire system from damage.

[0003] There is a solid-sealed pole in Chinese patent document CN201921827672.4, which includes a housing. An upper outgoing line, a lower outgoing line, a flexible connecting wire and a vacuum interrupter are arranged in the housing. The lower outgoing line is connected to one end of the flexible connecting wire, and the other end of the flexible connecting wire is connected to the upper outgoing line through the vacuum interrupter. Among them, a wiring part is arranged on the upper outgoing line, and the wiring part is vertically arranged in space with the vacuum interrupter, and the top of the wiring part is an arc surface; the utility model has the characteristics of uniform electric field distribution and not easy to discharge during the power-on process.

[0004] However, the above patent has certain defects in use. In actual use, the upper and lower outgoing lines of the pole will expose the contacts when connected. The exposed connection parts are prone to poor contact, resulting in unstable current and even possible safety accidents. Therefore, a fully insulated and environment-friendly gas ring main unit switch pole is proposed here to solve the above problems. Content of the Utility Model

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a fully insulated and environment-friendly gas ring main unit switch pole.

[0006] The utility model is realized by adopting the following technical scheme:

[0007] A fully insulated and environment-friendly gas ring main unit switch pole, including

[0008] Contact arm;

[0009] A housing, the housing is installed on one side of the contact arm, and an insulating pull rod is installed at the bottom of the contact arm, a swivel joint is installed at the bottom of the insulating pull rod, and a static contact is installed in the swivel joint;

[0010] A connecting rod connected to one side of the adapter, an upper insulating sleeve installed on one side of the connecting rod, an input power contact installed in the upper insulating sleeve, and an input power plum blossom contact installed on the input power contact;

[0011] A lower insulating sleeve is mounted on one side of the housing, wherein an output contact is mounted in the lower insulating sleeve, and an output plum blossom contact is mounted on the output contact;

[0012] As a preferred solution of the present invention, a cavity is provided in the shell, a vacuum arc extinguishing device is provided in the cavity, a lower wiring is connected to one side of the vacuum arc extinguishing device, an upper wiring is connected to the side of the vacuum arc extinguishing device away from the lower wiring, and a soft wiring is connected to one end of the upper wiring.

[0013] As a preferred solution of the present invention, the flexible wiring is connected to an adapter, and the adapter is installed in the insulating pull rod.

[0014] As a preferred solution of the present invention, the lower wiring is connected to the output power contact.

[0015] As a preferred solution of the present invention, spring clamps are installed in the input plum blossom contact and the output plum blossom contact.

[0016] As a preferred solution of the present invention, the outer walls of the contact arm, the housing, the insulating pull rod, the upper insulating sleeve, and the lower insulating sleeve are all coated with epoxy resin.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] 1. The contact arm is connected to one side of the shell, the bottom of the shell is connected to an insulating pull rod, the side of the shell is connected to a lower insulating sleeve, the bottom of the insulating pull rod is connected to an adapter, a connecting rod is provided on one side of the drill joint, and an upper insulating sleeve is installed on one side of the connecting rod. This structural design enables the entire pole to be fully insulated, effectively avoiding the poor contact problem caused by exposed contacts, and preventing the oxidation of the connecting copper busbar while improving the insulation performance, thereby improving the performance of the switch.

[0019] 2. By installing a static contact in the adapter and molding the pole and the static contact together, the entire pole is completely insulated when connected to the external cable, further improving the safety and reliability of the equipment.

[0020] 3. The input and output contacts are installed with input plum blossom contacts and output plum blossom contacts, and both the input and output plum blossom contacts are installed with spring clamps. When the cable is installed, the cable contacts the input and output contacts through the input and output plum blossom contacts. The spring clamps effectively tighten the cable and contacts and ensure the stability of the connection, reducing the risk of poor contact due to vibration. Brief Description of the Drawings

[0021] Figure 1 is the overall structure diagram of the present utility model;

[0022] Figure 2 is the exploded view of the present utility model;

[0023] Figure 3 is the cross-sectional view of the cavity of the present utility model;

[0024] Figure 4 is the structure diagram of the bottom of the adapter of the present utility model;

[0025] Figure 5 is the structure diagram of the outgoing electric plum blossom contact of the present utility model;

[0026] In the figure: 1. Contact arm; 2. Outer shell; 3. Insulating pull rod; 4. Adapter; 5. Stationary contact; 6. Connecting rod; 7. Upper insulating sleeve; 8. Incoming electric contact; 9. Incoming electric plum blossom contact; 10. Lower insulating sleeve; 11. Outgoing electric contact; 12. Outgoing electric plum blossom contact; 13. Spring clamp; 14. Vacuum arc extinguishing device; 15. Cavity; 16. Flexible wire; 17. Upper wiring; 18. Lower wiring. Detailed Description of the Preferred Embodiment

[0027] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] Embodiment:

[0029] Please refer to Figures 1 - 5 , a fully insulated and environmentally friendly gas ring main unit switch pole column, comprising:

[0030] Contact arm 1;

[0031] Outer shell 2, the outer shell 2 is installed on one side of the contact arm 1, and an insulating pull rod 3 is installed at the bottom of the contact arm 1, a rotary joint 4 is installed at the bottom of the insulating pull rod 3, and a stationary contact 5 is installed in the rotary joint 4;

[0032] Connecting rod 6, the connecting rod 6 is connected to one side of the rotary joint 4, an upper insulating sleeve 7 is installed on one side of the connecting rod 6, an incoming electric contact 8 is installed in the upper insulating sleeve 7, and an incoming electric plum blossom contact 9 is installed on the incoming electric contact 8;

[0033] Lower insulating sleeve 10, the lower insulating sleeve 10 is installed on one side of the outer shell 2, an outgoing electrical contact 11 is installed inside the lower insulating sleeve 10, and an outgoing electrical plum blossom contact 12 is installed on the outgoing electrical contact 11;

[0034] In this embodiment, one side of the contact arm 1 is connected to the outer shell 2, the bottom of the contact arm 1 is connected to the insulating pull rod 3, a swivel joint 4 is provided at the bottom of the insulating pull rod 3, a static contact 5 is installed inside the swivel joint 4, and the static contact 5 can be directly installed in the ring main unit to ensure the stability of the circuit. A connecting rod 6 on one side of the swivel joint 4 is connected to an upper insulating sleeve 7, an incoming electrical contact 8 is installed inside the upper insulating sleeve 7, an incoming electrical plum blossom contact 9 is installed on the incoming electrical contact 8, and the incoming electrical plum blossom contact 9 is fixed by a spring clamp 13, ensuring the reliability of the connection between the cable and the incoming electrical contact 8. The lower insulating sleeve 10 is installed on the opposite side of the outer shell 2, with an outgoing electrical contact 11 inside, an outgoing electrical plum blossom contact 12 is installed on the outgoing electrical contact 11, and a spring clamp 13 is installed on the outgoing electrical plum blossom contact 12, ensuring the stable connection of the outgoing cable, achieving full insulation, effectively avoiding the problem of poor contact caused by exposed contacts, preventing the oxidation of the connecting copper busbar on the premise of improving the insulation performance, and thus improving the performance of the switch.

[0035] Specifically, a cavity 15 is provided inside the outer shell 2, a vacuum arc extinguishing device 14 is provided inside the cavity 15, a lower wiring 18 is connected to one side of the vacuum arc extinguishing device 14, an upper wiring 17 is connected to the side of the vacuum arc extinguishing device 14 away from the lower wiring 18, and a flexible wiring 16 is connected to one end of the upper wiring 17.

[0036] In this embodiment, a cavity 15 is provided inside the outer shell 2, a vacuum arc extinguishing device 14 is installed inside the cavity 15. The function of the vacuum arc extinguishing device 14 is to effectively suppress the generation of electric arcs when cutting off the circuit, avoiding equipment damage and safety accidents caused by electric arcs. A lower wiring 18 is connected to one side of the vacuum arc extinguishing device 14, an upper wiring 17 is connected to the side of the vacuum arc extinguishing device 14 away from the lower wiring 18, and a flexible wiring 16 is connected to one end of the upper wiring 17. The upper wiring 17, lower wiring 18, and flexible wiring 16 are all connected to an external power source to ensure the continuity of power transmission.

[0037] Specifically, the flexible wiring 16 is connected to the swivel joint 4, and the swivel joint 4 is installed inside the insulating pull rod 3.

[0038] In this embodiment, the flexible wiring 16 is connected to the swivel joint 4, and the flexible wiring 16 connects the static contact 5 and the incoming electrical contact 8, thus realizing the flexible connection and reliable contact of the internal circuit of the ring main unit.

[0039] Specifically, the lower wiring 18 is connected to the outgoing electrical contact 11.

[0040] In this embodiment, the lower wiring 18 is connected to the outgoing electric contact 11, ensuring the effective connection between the vacuum arc extinguishing device 14 and the external cable.

[0041] Specifically, spring clamps 13 are installed inside both the incoming electric plum blossom contact 9 and the outgoing electric plum blossom contact 12.

[0042] In this embodiment, during cable installation, the cable contacts the incoming electric contact 8 and the outgoing electric contact 11 through the incoming electric plum blossom contact 9 and the outgoing electric plum blossom contact 12. The spring clamps 13 effectively improve the tightness between the cable and the contact and the connection stability, reducing the risk of poor contact caused by vibration.

[0043] Specifically, epoxy resin is coated on the outer walls of the contact arm 1, the housing 2, the insulating pull rod 3, the upper insulating sleeve 7, and the lower insulating sleeve 10.

[0044] In this embodiment, epoxy resin is coated on the outer walls of the contact arm 1, the housing 2, the insulating pull rod 3, the upper insulating sleeve 7, and the lower insulating sleeve 10, improving the corrosion resistance and wear resistance.

[0045] The principle of the present utility model is as follows: The contact arm 1 is connected to the housing 2 on one side and the insulating pull rod 3 on the other side. The housing 2 is connected to the lower insulating sleeve 10 on one side. The outgoing electric contact 11 is installed inside the lower insulating sleeve 10. A adapter 4 is connected below the insulating pull rod 3. A static contact 5 is provided inside the adapter 4 and is connected to the ring main unit. An upper insulating sleeve 7 is connected to one side of the adapter 4. The incoming electric contact 8 is installed inside the upper insulating sleeve 7. The incoming electric plum blossom contact 9 and the outgoing electric plum blossom contact 12 are installed on the incoming electric contact 8 and the outgoing electric contact 11. Spring clamps 13 are installed on both the incoming electric plum blossom contact 9 and the outgoing electric plum blossom contact 12, thus ensuring the safe and reliable electrical connection between the cable and the contact. A middle cavity is provided inside the housing 2. The vacuum arc extinguishing device 14 is installed inside the middle cavity. One side of the vacuum arc extinguishing device 14 is connected to the lower wiring 18, and the other side is connected to the upper wiring 17 and is connected to external equipment through the flexible wiring 16. During use, the external circuit is correspondingly installed with the incoming electric plum blossom contact 9 and the outgoing electric plum blossom contact 12, and then fixed with the spring clamps 13. There is no exposed part during connection, improving the insulation performance.

[0046] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A fully insulated and environmentally friendly gas ring main unit switch pole, characterized in that, Comprising: Contact arm; A housing, the housing is installed on one side of the contact arm, and an insulating pull rod is installed at the bottom of the contact arm, a swivel joint is installed at the bottom of the insulating pull rod, and a static contact is installed in the swivel joint; A connecting rod, the connecting rod is connected to one side of the swivel joint, an upper insulating sleeve is installed on one side of the connecting rod, a power inlet contact is installed in the upper insulating sleeve, and a power inlet plum blossom contact is installed on the power inlet contact; A lower insulating sleeve, the lower insulating sleeve is installed on one side of the housing, a power outlet contact is installed in the lower insulating sleeve, and a power outlet plum blossom contact is installed on the power outlet contact.

2. The all-insulated and environment-friendly gas ring main unit switch pole according to claim 1, characterized in that: A cavity is provided in the housing, a vacuum arc extinguishing device is provided in the cavity, a lower wiring is connected to one side of the vacuum arc extinguishing device, an upper wiring is connected to the side of the vacuum arc extinguishing device away from the lower wiring, and one end of the upper wiring is connected to a flexible wiring.

3. The pole of the fully-insulated and environment-friendly gas ring main unit switch according to claim 2, characterized in that: The flexible wiring is connected to the swivel joint, and the swivel joint is installed in the insulating pull rod.

4. The pole of the fully-insulated and environment-friendly gas ring main unit switch according to claim 3, characterized in that: The lower wiring is connected to the power outlet contact.

5. The pole of the switch of the fully-insulated and environment-friendly gas ring main unit according to claim 4, characterized in that: Spring retainers are installed in both the power inlet plum blossom contact and the power outlet plum blossom contact.

6. The pole of the fully insulated and environment-friendly gas ring main unit switch according to claim 5, characterized in that: Epoxy resin is coated on the outer walls of the contact arm, housing, insulating pull rod, upper insulating sleeve, lower insulating sleeve, and connecting rod.

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