Voltage acquisition and isolation device for residual-current circuit breaker

Abstract

The invention discloses a voltage acquisition and isolation device for a residual-current circuit breaker. The voltage acquisition and isolation device comprises a cylindrical shell, a rotating part and a limiting part, three static contact pieces are arranged on the shell, and a movable contact piece is arranged on the rotating piece. The static contact piece and the movable contact piece are correspondingly connected with wires. Static slots which are vertically distributed along the long axis of the shell are formed in the shell; the rotating piece comprises a circular-ring-shaped inserting piece, a rotating cover and a clamping groove; the insertion piece is rotatably inserted into the shell, and movable insertion grooves vertically distributed along the long axis are formed in the insertion piece. The electric leakage circuit breaker can be directly installed in an electric leakage circuit breaker product, the movable contact piece and the static contact piece are connected with the corresponding contacts through the wires respectively, a worker can directly rotate the rotating piece to achieve connection and disconnection under the condition that the cover body does not need to be opened, and therefore dielectric property detection can be conveniently carried out. The device has the advantages that dielectric property detection can be performed in a cover closing state, and selective closing can be performed in case of electric leakage.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, in particular to a voltage acquisition and isolation device for a leakage circuit breaker. Background Art

[0002] Existing leakage circuit breaker products have the problem in actual application that the dielectric performance test cannot be performed after the product cover is closed, and once the leakage function of the existing product fails, it cannot work normally. Summary of the Invention

[0003] The object of the present invention is to provide a voltage collection and isolation device for a leakage circuit breaker. The present invention has the advantage of being able to perform dielectric property testing in a closed state.

[0004] The technical solution of the present invention is as follows: a voltage acquisition and isolation device for a leakage circuit breaker, comprising a cylindrical shell, a rotating member rotatably sleeved in the middle of the shell, and a limit member sleeved in the middle of the rotating member and located in the center of the shell; three static contacts are correspondingly distributed on the shell, and a dynamic contact opposite to the static contact is correspondingly distributed on the rotating member; the static contact and the dynamic contact are correspondingly connected to wires; the rotating member can rotate forward and reverse to drive the dynamic contact to rotate and switch the connection or disconnection with the static contact; three static slots are distributed on the shell vertically arranged along the long axis of the shell, and the static contact can be detachably arranged in the static slots; the rotating member includes a circular plug-in, a rotating cover provided on the top of the plug-in and sleeved on the shell, and a card slot provided on the rotating cover; the plug-in can be rotatably inserted in the shell, and three dynamic slots are distributed on the plug-in vertically arranged along the long axis, and the dynamic contact can be detachably arranged in the dynamic slot.

[0005] In the aforementioned voltage collection and isolation device for leakage circuit breaker, an inner sleeve is provided inside the shell, and the shell and the inner sleeve are connected by two blocks; the insert is inserted in the gap between the shell and the inner sleeve; the static slot is provided in front of the block located on the front side.

[0006] In the aforementioned voltage collection and isolation device for leakage circuit breaker, a pair of limiting grooves corresponding to the on and off functions and a sliding groove correspondingly connected to the limiting grooves are provided at the bottom of the inner sleeve, and the limiting grooves include a connecting groove and a disconnecting groove; the depth of the disconnecting groove is greater than that of the connecting groove; a limiting block corresponding to the limiting groove is provided at the bottom of the limiting member.

[0007] In the aforementioned voltage collection and isolation device for leakage circuit breaker, a spring sleeved on the limiting member is provided at the top of the inner sleeve; the top of the spring abuts against the inside of the rotating member.

[0008] In the aforementioned voltage collection and isolation device for leakage circuit breaker, the limiter is provided with an insert block corresponding to the slot, the insert block is detachably inserted into the slot, and the limiter is inserted through the middle of the rotating member.

[0009] In the aforementioned voltage acquisition and isolation device for leakage circuit breaker, a mounting seat is provided on the outside of the shell, and the mounting seat is provided with multiple different specifications and shapes.

[0010] Compared with the prior art, the present invention includes a cylindrical housing and a rotating member rotatably mounted within the housing. Three stationary contacts corresponding to the three phases are inserted into the housing, and three corresponding moving contacts are inserted into the rotating member. Rotating the rotating member drives the moving contacts to rotate, thereby achieving the contact and separation of the moving and stationary contacts, completing the synchronous switching of the three-phase electricity. The opening angle of the moving and static contacts in the present invention can reach 120°, and the vertical corresponding distribution method can better utilize the limited space in the circuit breaker. The present invention also has superior dielectric performance (Uimp reaches 12kV). By arranging a limiter penetrating the rotating member at the end of the rotating member, the limiter drives the rotating member to rotate while the rotating member is fixed at the corresponding disconnection and connection positions, thereby realizing the switching of the on and off states; The structural design of this application is reasonable, and the production process is more convenient for promotion and application; The present application can be directly installed in a leakage circuit breaker product. The moving contact and the static contact are respectively connected to the corresponding contacts through wires. It is only necessary to expose the end of the rotating part and the limit part. The staff can directly realize the on-off by rotating the rotating part without opening the cover, thereby facilitating the dielectric performance test. At the same time, when the circuit does not require the leakage function and there is a problem with the leakage circuit inside the product, the present application also has short-circuit and overload protection functions to enable the product to work normally.

[0011] Therefore, the present invention has the advantages of being able to perform dielectric property testing in a closed state and selectively shut down leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the explosion structure of the present invention; Figure 3 It is a perspective structural diagram of the present invention; Figure 4 is a front view of the present invention (when disconnected); Figure 5 This is a schematic diagram of the explosion structure of the present invention Figure 2 .

[0013] The marks in the accompanying drawings are: 1-shell, 11-static slot, 12-limiting groove, 13-inner sleeve, 2-rotating member, 21-moving slot, 22-card slot, 23-rotating cover, 3-limiting member, 31-limiting block, 32-insertion block, 41-static contact piece, 42-moving contact piece, 5-spring, 6-mounting seat, 7-wire. DETAILED DESCRIPTION

[0014] The present invention will be further described below with reference to the accompanying drawings and examples, but they are not intended to limit the present invention.

[0015] Example. Voltage acquisition and isolation device for leakage circuit breaker, such as Figure 1-5 As shown, it includes a cylindrical shell 1, a rotating member 2 rotatably sleeved in the middle of the shell 1, and a limit member 3 sleeved in the middle of the rotating member 2 and located in the center of the shell 1; three static contacts 41 are correspondingly distributed on the shell 1, and a dynamic contact 42 opposite to the static contact 41 is correspondingly distributed on the rotating member 2; the static contact 41 and the dynamic contact 42 are correspondingly connected to a wire 7; the rotating member 2 can rotate forward and reverse to drive the dynamic contact 42 to rotate and switch the connection with the static contact 41 Disconnect; three static slots 11 are distributed on the shell 1 and arranged vertically along the long axis of the shell 1, and the static contact piece 41 is detachably arranged in the static slot 11; the rotating member 2 includes a circular insert, a rotating cover 23 provided on the top of the insert and sleeved on the shell 1, and a card slot 22 provided on the rotating cover 23; the insert can be rotatably inserted in the shell 1, and three dynamic slots 21 are distributed on the insert and arranged vertically along the long axis, and the dynamic contact piece 42 is detachably arranged in the dynamic slot 21.

[0016] An inner sleeve 13 is provided inside the shell 1, and the shell 1 and the inner sleeve 13 are connected by a stopper; the insert is inserted in the gap between the shell 1 and the inner sleeve 13; the static slot 11 is provided in front of the stopper located on the front side; one or more stoppers are provided as needed, which can not only play a connecting role but also limit the rotation of the rotating part 2.

[0017] A pair of limiting grooves 12 corresponding to the on and off states and a sliding groove corresponding to the limiting grooves 12 are provided at the bottom of the inner sleeve 13. The limiting grooves 12 include a connecting groove and a disconnecting groove. The depth of the disconnecting groove is greater than that of the connecting groove. A limiting block 31 corresponding to the limiting groove 12 is provided at the bottom of the limiting member 3.

[0018] A spring 5 sleeved on the limit member 3 is provided at the top of the inner sleeve 13; the top of the spring 5 abuts against the inside of the rotating member 2; the spring 5 cooperates with the disconnection groove and the limit block 31, so that when the limit block 31 is in the disconnection groove position, that is, the disconnected state, the spring 5 pushes the rotating member 2 outward, thereby increasing the distance between the moving contact piece 42 and the static contact piece 41, which can better meet the requirements of dielectric performance and ensure effective application in high-voltage leakage circuit breakers.

[0019] The limiting member 3 is provided with an inserting block 32 corresponding to the slot 22 . The inserting block 32 is detachably inserted into the slot 22 . The limiting member 3 is inserted through the middle of the rotating member 2 .

[0020] A mounting seat 6 is provided outside the housing 1 , and the mounting seat 6 has a plurality of different specifications and shapes.

[0021] The cross section of the insert is a circular ring structure, and the circumference of the inner ring of the insert is no more than half the circumference of a circle with the same radius. The specifications of the insert (the circumference of the ring) correspond to the block, ensuring that the moving contact piece 42 and the static contact piece 41 have the maximum distance on the same horizontal plane when in the disconnected state.

Claims

1. A voltage acquisition and isolation device for a leakage circuit breaker, characterized by: The invention comprises a cylindrical shell (1), a rotating member (2) rotatably sleeved in the middle of the shell (1), and a limiting member (3) sleeved in the middle of the rotating member (2) and located in the center of the shell (1); three static contact pieces (41) are correspondingly distributed on the shell (1), and a dynamic contact piece (42) opposite to the static contact piece (41) is correspondingly distributed on the rotating member (2); the static contact piece (41) and the dynamic contact piece (42) are both correspondingly connected to a wire (7); the rotating member (2) can rotate forward and reverse to drive the dynamic contact piece (42) to rotate and switch the connection with the static contact piece (41). The housing (1) is provided with three static slots (11) vertically arranged along the long axis of the housing (1), and the static contact piece (41) is detachably arranged in the static slot (11); the rotating member (2) comprises a circular insert, a rotating cover (23) provided on the top of the insert and sleeved on the housing (1), and a slot (22) provided on the rotating cover (23); the insert is rotatably inserted in the housing (1), and the insert is provided with three dynamic slots (21) vertically arranged along the long axis, and the dynamic contact piece (42) is detachably arranged in the dynamic slot (21).

2. The voltage acquisition and isolation device for a leakage circuit breaker according to claim 1, characterized in that: An inner sleeve (13) is provided inside the shell (1), and the shell (1) and the inner sleeve (13) are connected via a stopper; the insert is inserted into the gap between the shell (1) and the inner sleeve (13); and the static slot (11) is provided in front of the stopper located on the front side.

3. The voltage acquisition and isolation device for a leakage circuit breaker according to claim 1, characterized in that: The bottom of the inner sleeve (13) is provided with a pair of limiting grooves (12) corresponding to the on-off state and a sliding groove correspondingly connected to the limiting grooves (12), and the limiting grooves (12) include a connecting groove and a disconnecting groove; the depth of the disconnecting groove is greater than that of the connecting groove; and the bottom of the limiting member (3) is provided with a limiting block (31) corresponding to the limiting groove (12).

4. The voltage acquisition and isolation device for a leakage circuit breaker according to claim 3, characterized in that: A spring (5) sleeved on the limiting member (3) is provided at the top of the inner sleeve (13); the top of the spring (5) abuts against the inside of the rotating member (2).

5. The voltage acquisition and isolation device for a leakage circuit breaker according to claim 1, characterized in that: The limiting member (3) is provided with an insert block (32) corresponding to the card slot (22), and the insert block (32) is detachably inserted into the card slot (22). The limiting member (3) is inserted through the middle of the rotating member (2).

6. The voltage acquisition and isolation device for a leakage circuit breaker according to claim 1, characterized in that: A mounting seat (6) is provided on the outside of the housing (1), and the mounting seat (6) is provided in a plurality of different specifications and shapes.

7. The voltage acquisition and isolation device for a leakage circuit breaker according to claim 1, characterized in that: The cross section of the insert is a circular ring structure, and the circumference of the inner ring of the insert is not greater than half the circumference of a circle with the same radius.

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