Three-fracture solid-sealed polar pole with vacuum breaking, isolating and grounding functions

Abstract

The utility model relates to the technical field of electrical switches, and particularly discloses a three-fracture solid-sealed polar pole with vacuum breaking, isolating and grounding functions, an isolating knife is slidably mounted in a ceramic shell B, the isolating knife is rotatably mounted with an outgoing line side static contact, an insulating pull rod B is slidably mounted in the ceramic shell B, the isolating knife is rotatably mounted with the insulating pull rod B, and the insulating pull rod B is rotatably mounted with the insulating pull rod B; the corrugated pipe B is fixedly mounted at the top of the ceramic shell B, the insulating pull rod B is slidably mounted in the corrugated pipe B, a turntable is rotatably mounted on the side wall of the insulating pull rod B, the turntable is located above the vacuum isolation chamber, the corrugated pipe B has flexibility, and when the turntable rotates, the insulating pull rod B drives the isolation knife to be located at different positions, and the turntable can rotate around the circle center axis of the turntable; the working state information of the isolation knife can be obtained by directly observing the position information of the turntable with naked eyes, the transmission links are few, the transmission reliability is high, and the state information of the isolation knife obtained through the position information of the turntable is highly reliable.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical switch technical field, especially a kind of three-break fixed sealing pole with vacuum breaking, isolation and grounding function. BACKGROUND

[0002] Ring main unit is widely used in medium voltage power distribution field, compared with middle cabinet, it has simple structure, small size and low price and other significant advantages, and presents the development trend of miniaturization, high reliability, maintenance-free and modularization.

[0003] Whether it is traditional six fluorine sulfide ring network cabinet or environmental protection gas ring network cabinet rising in recent years, the gas tank inside is disposed with busbar, circuit breaker, isolation knife, contact box, incoming line bushing, outgoing line bushing and other devices, it is difficult to integrate vacuum circuit breaker and three-position isolation knife into a fixed sealing pole while having short-circuit breaking, isolation closing, isolation separation and grounding functions, so that the existing device occupies larger area, and reliability is lower. UTILITARY MODEL CONTENTS

[0004] In view of the deficiency of prior art, the utility model provides a kind of three-break fixed sealing pole with vacuum breaking, isolation and grounding function, solve whether it is traditional six fluorine sulfide ring network cabinet or environmental protection gas ring network cabinet rising in recent years, the gas tank inside is disposed with busbar, circuit breaker, isolation knife, contact box, incoming line bushing, outgoing line bushing and other devices, it is difficult to integrate vacuum circuit breaker and three-position isolation knife into a fixed sealing pole while having short-circuit breaking, isolation closing, isolation separation and grounding functions, so that the existing device occupies larger area, and reliability is lower Technical problem.

[0005] To achieve the above object, the utility model is realized by the following technical scheme:

[0006] A kind of three-break fixed sealing pole with vacuum breaking, isolation and grounding function, including fixed sealing epoxy resin (1), the fixed sealing epoxy resin (1) upper portion is provided with vacuum isolation chamber (3), vacuum arc-extinguishing chamber (2) in the lower portion of the vacuum isolation chamber (3);

[0007] The vacuum isolation chamber (3) comprises a ceramic shell B (31), an incoming line side static contact (32) and a grounding side static contact (33) distributed on both sides of the ceramic shell B (31) and extending from the ceramic shell B (31), an outgoing line side static contact (34) arranged at the lower part of the ceramic shell B (31), and an isolation knife (35) in contact with the outgoing line side static contact (34), the isolation knife (35) being connected with an insulating pull rod B (36) for driving the isolation knife (35) to rotate, and the insulating pull rod B (36) driving the isolation knife (35) to rotate so that the isolation knife (35) is in contact with the incoming line side static contact (32) and the grounding side static contact (33) or both in different states.

[0008] The vacuum arc-extinguishing chamber (2) comprises a ceramic shell A (21), a static contact (22) and a static guide rod (24) arranged in the upper part of the ceramic shell A (21), the static guide rod (24) being surrounded by the static contact (22), a moving contact (23) arranged below the static contact (22) in the ceramic shell A (21), and a moving guide rod (25) for driving the moving contact (23) to move to form contact and disconnection with the static contact (22), the moving guide rod (25) being provided with an insulating pull rod A (5) at the lower part of the moving guide rod (25) for driving the moving guide rod (25) to move up and down.

[0009] Further, one end of the insulating pull rod B (36) is connected with the isolation knife (35) through a pin shaft, and the other end of the insulating pull rod B (36) extends from the ceramic shell B (31) and is connected to a rotating disc (7) through a pin shaft.

[0010] Further, a bellows B (37) is arranged on the movement path of the insulating pull rod B (36), the bellows B (37) being arranged outside the ceramic shell B (31) and abutting against the connection between the insulating pull rod B (36) and the ceramic shell B (31).

[0011] Further, the two isolation knives (35) are arranged at intervals, and the outgoing line side static contact (34) is clamped between the two isolation knives (35) to form close contact.

[0012] Further, the moving guide rod (25) is surrounded by a bellows A (27), and the bellows A (27) abuts against the connection between the moving guide rod (25) and the ceramic shell A (21).

[0013] Further, the rotating disc (7) rotates around its center axis, and the disc surface of the rotating disc (7) is provided with a clear mark so that the current position state of the rotating disc can be directly observed.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model discloses three breaking points of pole, the first group breaking point of static contact and movable contact, the second group breaking point of isolating knife and outgoing line side static contact, the third group breaking point of isolating knife and ground side static contact, the state of three breaking points can be controlled through insulating pull rod A and insulating pull rod B, insulating pull rod A does one-dimensional linear motion, controls the closing of vacuum circuit breaker, insulating pull rod B does two-dimensional plane motion, and the switching of the three states of isolating combination, isolating separation and grounding is controlled through the shaft of rotating disc, and the utility model discloses be applicable to ring network cabinet (box) and other products, have the advantages of miniaturization, high reliability, maintenance-free, modularization.

[0016] Second, the working state information of isolating knife can be obtained by directly observing the position information of rotating disc with naked eyes, avoiding misoperation, and only one second insulating pull rod is linked between rotating disc and isolating knife, so that transmission links are few, and transmission reliability is high, and the state information of isolating knife is obtained through the position information of rotating disc, and the state information of isolating knife is highly reliable. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, and can be implemented according to the content of the specification, the following preferred embodiments of the utility model are described in detail below.

[0018] Figure 1 The structure diagram of fixed sealing pole and mechanism is shown.

[0019] Figure 2 The structure diagram of vacuum arc-extinguishing chamber is shown.

[0020] Figure 3 The structure diagram of vacuum isolating chamber is shown.

[0021] Figure 4 The axonometric view of fixed sealing pole is shown.

[0022] Figure 5 The axonometric view of vacuum isolating chamber is shown.

[0023] Figure 6 The pointing diagram of rotating disc is shown.

[0024] Figure 7 The structure diagram of outgoing line side static contact, isolating knife, insulating pull rod B and corrugated pipe B is shown.

[0025] In the figure, 1 is fixed sealing epoxy resin, 2 is vacuum arc-extinguishing chamber, 3 is vacuum isolating chamber, 4 is soft connection, 5 is insulating pull rod A, 6 is outgoing line seat, and 7 is rotating disc.

[0026] In the figure, 21 is ceramic shell A, 22 is static contact, 23 is movable contact, 24 is static guide rod, 25 is movable guide rod, 26 is metal shielding cover, and 27 is corrugated pipe A.

[0027] Figure 31 is a ceramic housing B, 32 is an incoming line side static contact, 33 is a ground side static contact, 34 is an outgoing line side static contact, 35 is an isolation knife, 36 is an insulating pull rod B, 37 is a bellows B. DETAILED DESCRIPTION

[0028] Explanation of related components:

[0029] Solid epoxy resin 1: plays the role of insulation and fixed protection for internal components;

[0030] Vacuum interrupter 2: realizes the breaking of the circuit and extinguishes the arc;

[0031] Ceramic housing A 21: provides a vacuum sealed environment to protect internal components;

[0032] Static contact 22: cooperates with moving contact 23 to realize circuit conduction or disconnection;

[0033] Moving contact 23: controls the on-off of the circuit by contacting or separating from static contact 22;

[0034] Static guide rod 24: fixes and conducts current;

[0035] Moving guide rod 25: drives moving contact 23 to move and conducts current;

[0036] Metallic shield 26: optimizes the electric field distribution and protects the ceramic housing;

[0037] Bellows A 27: provides a moving space for moving contact 23 and plays a sealing role;

[0038] Vacuum isolation chamber 3: realizes isolation and grounding functions;

[0039] Ceramic housing B 31: provides insulation and support;

[0040] Incoming line side static contact 32: cooperates with isolation knife 35 to realize switching between different states;

[0041] Ground side static contact 33: used for grounding operation;

[0042] Outgoing line side static contact 34: realizes current output;

[0043] Isolation knife 35: switches different connection states;

[0044] Insulating pull rod B 36: drives isolation knife 35 to move to realize state switching;

[0045] Bellows B 37: provides a moving space for insulating pull rod B 36 and seals;

[0046] Flexible connection 4: conducts current to ensure smooth transmission of power;

[0047] Outlet seat 6: connect external line, output current;

[0048] Insulating pull rod A5: make one-dimensional linear motion, control the closing of vacuum circuit breaker;

[0049] Rotary disc 7: drive insulating pull rod B36 by rotation, control the position state of isolation knife 35, facilitate observation to obtain the working state information of isolation knife 35.

[0050] A three-break fixed pole with vacuum breaking, isolation and grounding functions, comprising a fixed epoxy resin 1, a vacuum isolation chamber 3 is arranged on the upper part of the fixed epoxy resin 1, and a vacuum arc chamber 2 is arranged at the lower part of the vacuum isolation chamber 3.

[0051] The vacuum isolation chamber 3 comprises a ceramic shell B31, an incoming line side static contact 32 and a grounding side static contact 33 distributed on both sides of the ceramic shell B31 and extending from the ceramic shell B31, an outgoing line side static contact 34 arranged at the lower part of the ceramic shell B31, and an isolation knife 35 in contact with the outgoing line side static contact 34, the isolation knife 35 is connected with an insulating pull rod B36 for driving the rotation of the isolation knife 35, the rotation of the insulating pull rod B36 drives the rotation of the isolation knife 35, so that the isolation knife 35 can be in contact with the incoming line side static contact 32 and the grounding side static contact 33 or disconnected from both in different states.

[0052] The vacuum arc chamber 2 comprises a ceramic shell A21, a static guide rod 24 and a static contact 22 arranged on the static guide rod 24 are arranged in the upper part of the ceramic shell A21, a moving contact 23 is arranged in the lower part of the static contact 22 in the ceramic shell A21, a moving guide rod 25 is arranged to drive the moving contact 23 to move to form contact and disconnection with the static contact 22, and an insulating pull rod A5 is arranged at the lower part of the moving guide rod 25 to drive the up-and-down movement of the moving guide rod 25.

[0053] Further, one end of the insulating pull rod B36 is connected with the isolation knife 35 through a pin shaft, and the other end of the insulating pull rod B36 extends from the ceramic shell B31 and is connected to a rotary disc 7 through a pin shaft.

[0054] Further, a bellows B37 is arranged on the movement path of the insulating pull rod B36, the bellows B37 is arranged outside the ceramic shell B31 and abuts against the connection between the insulating pull rod B36 and the ceramic shell B31.

[0055] Further, the two pieces of isolation knife 35 are arranged at intervals, and the outgoing line side static contact 34 is clamped between the two pieces of isolation knife 35 to form close contact.

[0056] Further, the moving guide rod 25 is sleeved with a bellows A 27, which is in contact with the joint of the moving guide rod 25 and the ceramic shell A 21.

[0057] Further, the rotating disc 7 rotates around its central axis, and the surface of the rotating disc 7 is provided with a significant mark, so that the current position state of the rotating disc can be directly observed.

[0058] The utility model will be further explained below, so as to better understand the utility model:

[0059] The utility model discloses a vacuum arc-extinguishing chamber 2 is cylindrical as a whole, and the inside is in a vacuum state, and the outer ring is a ceramic shell A 21. The static contact 22 and the static guide rod 24 are conductors, and the positions are fixed and unmoved. The moving contact 23 and the moving guide rod 25 are conductors, and the positions can be driven by the insulated pull rod A to move in a one-dimensional straight line. When the moving contact 23 and the static contact 22 are in close contact, the vacuum arc-extinguishing chamber 2 is in a conducting state, and when the moving contact 23 and the static contact 22 are separated to a safe distance, the vacuum arc-extinguishing chamber 2 is in an open state. The bellows A 27 is stretchable, which provides the moving space of the moving contact 23 and also plays a sealing role. The metal shielding cover 26 plays the role of optimizing the electric field distribution and protecting the ceramic shell 21.

[0060] The utility model discloses an isolation knife 35 two pieces are a group, and the middle is sandwiched with the outgoing line side static contact 34, and rotates around the shaft hole of outgoing line side static contact 34 through the pin shaft. The ceramic shell B 31 is flat, and the vacuum cavity in the inside is also flat, and the ceramic inner wall is smooth, facilitating the sliding of the two isolation knives 35 in the inside. The bellows B 37 is stretchable, which provides the moving space of the insulated pull rod B 36 and also plays a sealing role.

[0061] In specific operation, the state of the vacuum arc-extinguishing chamber 2 is controlled through the insulated pull rod A 5, when the insulated pull rod A 5 moves towards the vacuum arc-extinguishing chamber 2, drives the moving contact 23 and the static contact 22 to closely adhere, and the vacuum arc-extinguishing chamber 2 is in a conducting state, when the insulated pull rod A 5 moves away from the vacuum arc-extinguishing chamber 2, drives the moving contact 23 and the static contact 22 to separate to a safe distance, and the vacuum arc-extinguishing chamber 2 is in an open state.

[0062] In specific operation, the rotating disc 7 rotates around the fixed shaft of its axis, and the state of the three-position isolation knife 35 is controlled through the rotating rotating disc 7. When the arrow of the rotating disc 7 points to position I, the incoming line side static contact 32 and the outgoing line side static contact 34 are in conduction, and the isolation knife 35 is in the state of "isolated combination", when the arrow of the rotating disc 7 points to position II, the incoming line side static contact 32, the grounding side static contact 33 and the outgoing line side static contact 34 are not in conduction, and the isolation knife 35 is in the state of "isolated separation", when the arrow of the rotating disc 7 points to position III, the grounding side static contact 33 and the outgoing line side static contact 34 are in conduction, and the isolation knife 7 is in the state of "grounding".

[0063] Finally, it should be noted that: apparently, the above examples are merely for the purpose of clearly illustrating the utility model, and not limited to the implementation. For those of ordinary skill in the art, on the basis of the above description, other different forms of changes or variations can also be made. Here, it is not necessary and impossible to exhaust all the implementation. The obvious changes or variations derived therefrom are still within the scope of protection of the utility model.

Claims

1. A three-break dead tank pole with vacuum breaking, isolating and grounding functions, comprising a dead tank epoxy resin (1), characterized in that, The solid sealing epoxy resin (1) is provided with a vacuum isolation chamber (3) on the upper part, and a vacuum arc-extinguishing chamber (2) below the vacuum isolation chamber (3); The vacuum isolation chamber (3) comprises a ceramic shell B (31), an incoming line side static contact (32) and a grounding side static contact (33) distributed on both sides of the ceramic shell B (31) and extending from the ceramic shell B (31), an outgoing line side static contact (34) arranged at the lower part of the ceramic shell B (31), and an isolation knife (35) in contact with the outgoing line side static contact (34), the isolation knife (35) being connected with an insulating pull rod B (36) for driving the rotation of the isolation knife (35), the rotation of the insulating pull rod B (36) driving the rotation of the isolation knife (35) so that the isolation knife (35) can be in contact with the incoming line side static contact (32) and the grounding side static contact (33) or disconnected from both in different states. The vacuum arc-extinguishing chamber (2) comprises a ceramic shell A (21), the ceramic shell A (21) being provided with a static guide rod (24) and a static contact (22) arranged around the static guide rod (24) at the upper part, the ceramic shell A (21) being provided with a moving contact (23) below the static contact (22), and a moving guide rod (25) driving the movement of the moving contact (23) to form contact and disconnection with the static contact (22), the moving guide rod (25) being provided with an insulating pull rod A (5) at the lower part for driving the up-and-down movement of the moving guide rod (25).

2. The triple-break dead tank pole assembly with vacuum interrupter, isolation and grounding functions according to claim 1, characterized in that, One end of the insulating pull rod B (36) is connected with the isolation knife (35) through a pin shaft, and the other end of the insulating pull rod B (36) extends from the ceramic shell B (31) and is connected to a rotating disc (7) through a pin shaft.

3. The triple-break dead tank pole assembly with vacuum interrupters, isolation and grounding functions according to claim 1, characterized in that, A bellows B (37) is arranged on the movement path of the insulating pull rod B (36), the bellows B (37) being outside the ceramic shell B (31) and abutting against the connection between the insulating pull rod B (36) and the ceramic shell B (31).

4. The triple-break dead tank pole assembly with vacuum interrupters, isolation and grounding functions according to claim 1, characterized in that, The two isolation knives (35) are arranged at intervals, and the outgoing line side static contact (34) is clamped between the two isolation knives (35) to form a close contact.

5. The triple-break dead tank pole assembly with vacuum interrupters, isolation and grounding functions according to claim 1, characterized in that, The moving guide rod (25) is provided with a bellows A (27), the bellows A (27) abutting against the connection between the moving guide rod (25) and the ceramic shell A (21).

6. The triple-break dead tank pole assembly with vacuum interrupters, isolation and grounding functions according to claim 2, characterized in that, The rotating disc (7) rotates around its center axis, and the disc surface of the rotating disc (7) is provided with a clear mark for directly observing the current position state of the rotating disc.

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