Integrated conductive structure in small space, use method and installation tool

Abstract

The invention relates to an integrated conductive structure in a small space, a use method and an installation tool. The integrated conductive structure comprises an isolation insulation pull rod which is connected with an isolation insulation crank arm and moves transversely, and an isolation moving contact which is connected with the isolation insulation pull rod and moves transversely. A static contact of the vacuum arc-extinguishing chamber is connected with an isolation moving contact through an isolation middle contact, a static side outgoing line insert is connected with the isolation moving contact through a static side spring contact finger, and the isolation middle contact is located between the static side spring contact finger and an isolation insulation pull rod. A traditional swing type structure is replaced by the isolation insulation pull rod and the isolation moving contact which move transversely, and the isolation switch is suitable for switching on and switching off in a small space; through the arrangement of the solid-sealed polar pole and the integrated pouring, the strength can be enhanced, the space can be saved, and through the arrangement of the gap, a worker can directly judge the switching-on or switching-off condition through the position of the isolation moving contact in the gap, so that the observation is more visual.

Description

Technical Field

[0001] The present invention relates to the field of electricity, in particular to the technical field of vacuum circuit breakers, and specifically refers to an integrated conductive structure in a small space, a use method, and an installation tool. Background Art

[0002] With the development of power systems, miniaturization of power equipment has become a trend. In order to reduce product size and improve product reliability, in some vacuum circuit breakers, a layer of epoxy resin is poured outside the vacuum interrupter to form a sealed pole, thereby reducing product size and ensuring product reliability.

[0003] The vacuum interrupter is sealed inside the pole. Due to its small size, the conductive structure and transmission structure of the product are difficult to install, and the traditional swinging structure cannot meet the requirements. At the same time, it is also impossible to intuitively obtain the closing and opening status. At the same time, due to the smaller space, the connection between the vacuum insulation rod and the vacuum interrupter is also more troublesome. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an integrated conductive structure, a method of use, and an installation tool in a small space, which replaces the traditional swinging structure and is suitable for closing and opening a switch in a small space. It is also convenient to intuitively obtain the closing and opening status. The installation tool provided also facilitates the connection between the vacuum insulating rod and the vacuum arc extinguishing chamber.

[0005] The present invention is achieved through the following technical scheme: an integrated conductive structure in a small space, including an isolating insulating pull rod connected to an isolating insulating arm and moving laterally, an isolating moving contact connected to the isolating insulating pull rod and moving laterally, a static contact of a vacuum arc extinguishing chamber connected to the isolating moving contact through an isolating intermediate contact, a static side outlet insert connected to the isolating moving contact through a static side spring contact finger, and the isolating intermediate contact is located between the static side spring contact finger and the isolating insulating pull rod. When the present invention is in use, the isolating insulating pull rod and the isolating moving contact which move laterally are used to replace the traditional swinging structure, and the present invention is suitable for closing and opening the switch in a small space.

[0006] Preferably, a guide block extending into the isolating moving contact is further connected to the static side outlet insert.

[0007] This preferred solution provides a guiding function for the isolating movable contact when it moves by providing a guide block.

[0008] Preferably, the static side outlet insert, the isolating middle contact and the vacuum interrupter are cast by epoxy resin to form a solid-sealed pole, and a slide groove for sliding the isolating insulating pull rod is provided in the solid-sealed pole.

[0009] This preferred solution facilitates enhancing strength and saving space by providing a sealed pole and an integral casting.

[0010] Preferably, a gap is provided on the sealed pole between the first spring contact finger and the isolating middle contact.

[0011] In this preferred solution, by setting the gap, the staff can directly judge whether the circuit breaker is in the closed or open state by the position of the isolating moving contact in the gap, making the observation more intuitive.

[0012] Preferably, the moving side of the vacuum arc extinguishing chamber is connected to the vacuum insulating rod through a joint, a soft connection is connected to the joint, an annular convex ring is also provided on the joint, a disc spring is provided between the convex ring and the soft connection, and the other end of the soft connection is connected to the moving side lead-out insert.

[0013] This preferred solution ensures the fastening force between the soft connection and the moving contact of the vacuum interrupter through the provision of a disc spring, thereby preventing the soft connection from loosening.

[0014] Preferably, the shell of the conductive structure includes an upper shell and a lower shell that are assembled in a sealed manner. A mounting plate is provided in the upper shell, and a fixing bolt extending downward through the mounting plate is provided on the mounting plate. The fixing bolt is threadedly connected to a terminal block. A wiring port for the terminal block to pass through is opened on the lower shell, and a fixing nut located below the lower shell is threadedly connected to the mounting plate. The mounting plate is also connected to a shaft sealing ring located in the wiring port, and the mounting plate is connected to an end face sealing ring connected to the lower shell.

[0015] When the preferred solution is in use, in a small space, in order to avoid interference or extrusion between the wiring and the transmission structure in the shell, the wiring in the shell needs to be connected to the terminal board, and the fixing bolts pass through the mounting plate to connect with the terminal board. The diameter of the through-hole on the mounting plate is smaller than the diameter of the fixing bolt head, so that the position of the mounting plate in the height direction can be adjusted. After the lower shell and the upper shell are aligned and installed, the terminal board passes through the wiring port, and then the terminal board is fixed to the lower shell with a fixing nut, thereby fixing the terminal board, and then connecting the external wires to the wiring terminals on the terminal board, thereby achieving conduction of the wires.

[0016] Preferably, it includes a fixed tube for fixing the joint and a rotating sleeve for driving the fixed tube to rotate, the fixed tube includes two symmetrically arranged fastening half-tubes, a fixing plate in contact with the joint is fixedly connected in the fastening half-tube, two semicircular through holes arranged along its radial direction are also provided on the side of the fastening half-tube in contact with the other fastening half-tube, and a long hole located between the two semicircular openings is also provided on the fastening half-tube, and the long hole extends to the end face of the fastening half-tube in the direction away from the fixing plate.

[0017] When this preferred solution is in use, the two fastening half-tubes are moved and inserted from above and below the vacuum insulating rod toward the direction of the vacuum arc extinguishing chamber respectively. When the fixing plate is located at the upper end of the joint, the two fastening half-tubes are moved toward the vacuum insulating rod so that the two fixing plates clamp the joint. The rotating sleeve is then used to drive the fixing tube to rotate, thereby realizing the rotation of the joint.

[0018] Preferably, two symmetrically arranged grooves are milled on the circumferential surface of the joint, and the fixing plate is arranged corresponding to the grooves and inserted into the grooves.

[0019] When this preferred solution is in use, the provision of two grooves facilitates the selection of the clamping position of the two fixing plates, and also facilitates the rotation of the rotating sleeve to drive the fixing plate to rotate, thereby driving the joint to rotate.

[0020] Preferably, the rotating sleeve comprises a cylinder sleeved on a fixed tube, a hexagonal protrusion fixedly connected to the bottom surface of the cylinder, two symmetrically arranged pins are provided on the circumferential surface of the cylinder, and two corresponding semicircular perforations on the two fastening half-tubes form pin holes for inserting the pins.

[0021] When this preferred solution is in use, after the fixed tube is placed in position, the cylinder is driven to move laterally so that the fixed tube is inserted into the cylinder. At this time, the pin squeezes the two fastening half-tubes. The long hole is set to facilitate the deformation of the fastening half-tubes. When the pin moves to the pin hole, the pin is inserted into the pin hole, thereby realizing the connection between the rotating sleeve and the fixed tube. Then a wrench is used to drive the rotating sleeve to rotate by driving the hexagonal protrusion, thereby driving the fixed tube to rotate, thereby driving the joint to rotate.

[0022] A method for using an integrated conductive structure in a small space. When closing the circuit breaker, the isolating insulating pull rod moves laterally toward the first spring contact finger, so that the isolating moving contact is inserted into the first spring contact finger under the guidance of the guide block, so that the static contact of the vacuum interrupter is connected with the static side outlet insert. In order to ensure that no impact is generated at the static side outlet insert after the circuit breaker is fully closed, after the circuit breaker is fully closed, the isolating operating handle connected to the isolating insulating pull rod is limited by the housing, and the circuit breaker cannot be closed further. When opening the circuit breaker, the isolating insulating pull rod moves laterally away from the first spring contact finger, so that the isolating moving contact is separated from the first spring contact finger, disconnecting the connection between the static contact of the vacuum interrupter and the static side outlet insert. In order to ensure that the isolating moving contact does not disengage from the guide slot after the circuit breaker is opened, the isolating operating handle is limited by the housing after the circuit breaker is opened, and the circuit breaker cannot be opened further; Due to the setting of the gap, the staff can directly judge whether the switch is in the closed or open state by the position of the isolating moving contact in the gap, making the observation more intuitive. At the same time, the lateral movement method is used to replace the conventional swinging structure, thereby reducing the space and significantly improving the transmission efficiency. The beneficial effects of the present invention are as follows: through the laterally movable isolating insulating pull rod and isolating moving contact, the traditional swinging structure is replaced, which is suitable for closing and opening in a small space; through the setting of the sealed pole and the one-piece casting, it is convenient to enhance the strength and also convenient to save space; through the setting of the disc spring, the tightening force between the soft connection and the moving contact of the vacuum arc extinguishing chamber is guaranteed to prevent the soft connection from loosening; through the setting of the gap, the staff can directly judge whether the switch is in the closing or opening state by the position of the isolating moving contact in the gap, making the observation more intuitive. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is an enlarged schematic diagram of the isolating moving contact; Figure 3 This is a schematic diagram of the isolation operating handle; Figure 4 is a three-dimensional schematic diagram of a fixed tube; Figure 5 A schematic diagram of the front view of fastening the half pipe; Figure 6 A top view schematic diagram of fastening a half pipe; Figure 7 is a schematic diagram of the main view of the rotating sleeve; Figure 8 is a bottom view schematic diagram of a rotating sleeve; Fig. 9 Use state diagrams for fixed tubes and rotating sleeves; Fig.10 Schematic diagram of the wiring board; As shown in the figure: 1. Static side outlet insert, 2. Sealed pole, 3. Vacuum interrupter, 4. Moving side outlet insert, 5. Flexible connection, 6. Disc spring, 7. Connector, 8. Fixing ring, 9. Contact spring, 10. Insulating rod, 11. First spring contact finger, 12. Guide block, 13. Isolating moving contact, 14. Isolating middle contact, 15. Isolating insulating rod, 31. Isolating transmission shaft, 32. Isolating insulating crank arm, 35. Isolating operating handle, 36. Housing, 41. Fixing bolt, 42. Double sealed terminal block, 43. Anti-loosening gasket, 44. Fixing nut, 45. Wire, 46. Mounting plate. DETAILED DESCRIPTION

[0024] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0025] Refer to the attached Figure 1-10The present invention provides an integrated conductive structure in a small space, a method of use, and an installation tool. The integrated conductive structure includes a housing, a vacuum interrupter 3 located in the housing, and an isolating switch. The isolating switch includes an isolating operating handle 35, an isolating transmission shaft 31, an isolating insulating crank arm 32, and an isolating connecting plate.

[0026] An isolating insulating pull rod 15 that moves laterally is hinged on the isolating insulating arm 32. The isolating insulating pull rod 15 is connected to the isolating moving contact 13 through bolts. The isolating moving contact 13 is connected to the isolating intermediate contact 14 through a second spring contact finger. The isolating intermediate contact 14 is connected to the static contact of the vacuum interrupter 3. The static side outlet insert 1 is connected to the isolating moving contact 13 through the static side spring contact finger. The isolating intermediate contact 14 is located between the static side spring contact finger and the isolating insulating pull rod 15. The moving side of the vacuum interrupter 3 is connected to the moving side outlet insert 4.

[0027] A guide block 12 extending into the isolating moving contact 13 is also connected to the static side outlet insert 1 .

[0028] The outlet insert, the isolating middle contact 14 and the vacuum interrupter 3 are cast into a solid-sealed pole 2 by epoxy resin, and a sliding groove for the isolating insulating pull rod 15 to slide is provided in the solid-sealed pole 2.

[0029] A gap is formed on the pole between the first spring contact finger 11 and the isolating middle contact 14 .

[0030] A contact spring 9 is provided in the vacuum insulating rod 10, and the joint 7 and the fixing ring 8 fix the contact spring 9 in the vacuum insulating rod 10. The joint 7 is threadedly connected to the moving side of the vacuum interrupter 3. The moving side of the vacuum interrupter 3 is also connected to a flexible connection 5 sleeved on the joint 7. The other end of the flexible connection 5 is connected to the moving side lead-out insert 4. The joint 7 is also provided with an annular convex ring, and a disc spring 6 is provided between the convex ring and the flexible connection 5.

[0031] The isolating moving contact and the isolating insulating rod extend horizontally, so that the entire conductive structure is arranged horizontally, thereby reducing the height and being suitable for use in small spaces. The housing of the conductive structure includes an upper housing and a lower housing that are assembled in a sealed manner. A mounting plate 46 is provided in the upper housing. A fixing bolt 41 extending downward through the mounting plate 46 is provided on the mounting plate 46. The fixing bolt 41 is threadedly connected to a terminal block 42. A wiring port for the terminal block 42 to pass through is provided on the lower housing. A fixing nut 44 located below the lower housing is threadedly connected to the mounting plate 46. A shaft sealing ring located in the wiring port is also connected to the mounting plate 46. An end face sealing ring connected to the lower housing is connected to the mounting plate 46. A locking gasket is also provided between the lower housing and the fixing nut 44. The housing is integrally cast.

[0032] Due to the small space, in order to avoid the wiring from interfering with or being squeezed by the transmission structure in the shell, the wiring in the shell needs to be connected to the terminal block 42, and the fixing bolt 41 passes through the mounting plate 46 to be connected to the terminal block 42. The diameter of the perforation on the mounting plate 46 is smaller than the diameter of the head of the fixing bolt 41, so that the position of the mounting plate 46 in the height direction can be adjusted. After the lower shell and the upper shell are aligned and installed, the terminal block 42 passes through the wiring port, and then the terminal block 42 is fixed to the lower shell with the fixing nut 44, thereby fixing the terminal block 42, and then connecting the external wires 45 to the wiring terminals on the terminal block 42, thereby achieving conduction of the wires 45.

[0033] A mounting tool for an integrated conductive structure in a small space, the mounting tool being used to connect a joint 7 and a moving side of a vacuum arc extinguishing chamber 3, the mounting tool comprising a fixing tube for fixing the joint 7, and a rotating sleeve for driving the fixing tube to rotate, the fixing tube comprising two symmetrically arranged fastening half-tubes, a fixing plate in contact with the joint 7 being fixedly connected in the fastening half-tubes, two semicircular through holes arranged radially therefrom are provided on the side of the fastening half-tube in contact with the other fastening half-tube, a long hole is also provided on the fastening half-tube between the two semicircular openings, and the long hole extends in a direction away from the fixing plate to the end face of the fastening half-tube.

[0034] Two symmetrically arranged grooves are milled on the circumferential surface of the joint 7, and the fixing plate is arranged corresponding to the grooves and inserted into the grooves.

[0035] The rotating sleeve includes a cylinder sleeved on a fixed tube, a hexagonal protrusion fixed to the bottom surface of the cylinder, two symmetrically arranged pins are arranged on the circumferential surface of the cylinder, and two corresponding semicircular through holes on the two fastening half tubes form pin holes for inserting the pins.

[0036] The method for using the integrated conductive structure in a small space is as follows: when closing the circuit breaker, the isolating insulating pull rod 15 moves laterally toward the first spring contact finger 11, so that the isolating moving contact 13 is inserted into the first spring contact finger 11 under the guidance of the guide block 12, so that the static contact of the vacuum interrupter 3 is connected with the static side outlet insert 1. In order to ensure that no impact is generated at the static side outlet insert 1 after the circuit breaker is fully closed, after the circuit breaker is fully closed, the isolating operating handle 35 connected to the isolating insulating pull rod 15 is limited by the housing, and the circuit breaker cannot be closed further; When opening the circuit breaker, the isolating insulating pull rod 15 moves laterally away from the first spring contact finger 11, so that the isolating moving contact 13 is separated from the first spring contact finger 11, and the connection between the static contact of the vacuum interrupter 3 and the static side outlet insert 1 is disconnected. In order to ensure that the isolating moving contact 13 does not disengage from the guide slot after the circuit breaker is opened, the isolating operating handle 35 is limited by the housing after the circuit breaker is opened, and the circuit breaker cannot be opened further; Due to the setting of the gap, the staff can directly judge whether the switch is in the closed or open state by the position of the isolating moving contact 13 in the gap, making the observation more intuitive. At the same time, the lateral movement method is used to replace the conventional swinging structure, thereby reducing the space and significantly improving the transmission efficiency.

[0037] The present invention ensures the requirement of miniaturization of the product for reducing the product volume, and at the same time integrates the isolating switch and the vacuum interrupter 3 into one, thereby ensuring the installation and debugging of the conductive and transmission circuits and improving the reliability of the product.

[0038] Of course, the above description is not limited to the above examples. Technical features not described in the present invention can be achieved by or by using existing technologies, which will not be described here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention, and should also fall within the scope of protection of the claims of the present invention.

Claims

1. An integrated conductive structure in a small space, characterized in that: It comprises an isolating insulating pull rod (15) connected to an isolating insulating arm (32) and movable in the transverse direction, and an isolating moving contact (13) connected to the isolating insulating pull rod and movable in the transverse direction, the stationary contact of the vacuum interrupter (3) being connected to the isolating moving contact (13) via an isolating intermediate contact (14), the stationary side outlet insert (1) being connected to the isolating moving contact (13) via a stationary side spring contact finger, and the isolating intermediate contact (14) being located between the stationary side spring contact finger and the isolating insulating pull rod (15).

2. The integrated conductive structure in a small space according to claim 1, characterized in that: The static side outlet insert (1) is also connected to a guide block (12) extending into the isolating moving contact (13).

3. The integrated conductive structure in a small space according to claim 2, characterized in that: The static side outlet insert (1), the isolating middle contact (14) and the vacuum interrupter (3) are cast by epoxy resin to form a solid-sealed pole (2), wherein a slide groove for the isolating insulating pull rod (15) to slide is provided in the solid-sealed pole (2).

4. The integrated conductive structure in a small space according to claim 3, characterized in that: The sealed pole (2) is provided with a gap between the first spring contact finger (11) and the isolating middle contact (14).

5. The integrated conductive structure in a small space according to claim 4, characterized in that: The moving side of the vacuum interrupter (3) is connected to the vacuum insulating pull rod (10) via a joint (7), a soft connection (5) is connected to the joint (7), an annular convex ring is also provided on the joint (7), a disc spring (6) is provided between the convex ring and the soft connection (5), and the other end of the soft connection (5) is connected to the moving side outlet insert (4).

6. The integrated conductive structure in a small space according to claim 5, characterized in that: The housing of the conductive structure comprises an upper shell and a lower shell which are assembled in a sealed manner. A mounting plate (46) is arranged in the upper shell. A fixing bolt (41) is arranged on the mounting plate (46) and extends downward through the mounting plate (46). The fixing bolt (41) is threadedly connected to a wiring board (42). A wiring port for the wiring board (42) to pass through is provided on the lower shell. A fixing nut (44) located below the lower shell is threadedly connected to the mounting plate (46). A shaft sealing ring located in the wiring port is also connected to the mounting plate (46). An end face sealing ring connected to the lower shell is connected to the mounting plate (46).

7. The installation tool for an integrated conductive structure in a small space according to claim 6, characterized in that: The invention comprises a fixing tube for fixing the joint (7) and a rotating sleeve for driving the fixing tube to rotate, wherein the fixing tube comprises two symmetrically arranged fastening half-tubes, wherein a fixing plate in contact with the joint (7) is fixedly connected in the fastening half-tube, and two semicircular through holes arranged along the radial direction of the fastening half-tube are also provided on the side of the fastening half-tube in contact with the other fastening half-tube, and a long hole is also provided on the fastening half-tube between the two semicircular openings, and the long hole extends in a direction away from the fixing plate to the end surface of the fastening half-tube.

8. The installation tool for an integrated conductive structure in a small space according to claim 7, characterized in that: Two symmetrically arranged grooves are milled on the circumferential surface of the joint (7); the fixing plate is arranged corresponding to the grooves and inserted into the grooves.

9. The integrated conductive structure in a small space, the method of use, and the installation tool according to claim 8, characterized in that: The rotating sleeve includes a cylinder sleeved on a fixed tube, a hexagonal protrusion fixed to the bottom surface of the cylinder, two symmetrically arranged pins are arranged on the circumferential surface of the cylinder, and two corresponding semicircular through holes on the two fastening half tubes form pin holes for inserting the pins.

10. The method for using the integrated conductive structure in a small space according to claim 9, characterized in that: When closing the circuit breaker, the isolating insulating pull rod (15) moves laterally toward the first spring contact finger (11), so that the isolating moving contact (13) is inserted into the first spring contact finger (11) under the guidance of the guide block (12), so that the static contact of the vacuum interrupter (3) is connected to the static side outlet insert (1). In order to ensure that no impact is generated on the static side outlet insert (1) after the circuit breaker is fully closed, the isolating operating handle (35) connected to the isolating insulating pull rod (15) is limited by the housing and cannot be closed further; When opening the circuit breaker, the isolating insulating pull rod (15) moves laterally away from the first spring contact finger (11), thereby separating the isolating moving contact (13) from the first spring contact finger (11), disconnecting the static contact of the vacuum interrupter (3) from the static side outlet insert (1). In order to ensure that the isolating moving contact (13) does not disengage from the guide slot after the circuit breaker is opened, the isolating operating handle (35) is limited by the housing after the circuit breaker is opened, and the circuit breaker cannot be opened further. Due to the setting of the gap, the staff can directly judge whether the switch is in the closed or open state by the position of the isolating moving contact (13) in the gap, making the observation more intuitive. At the same time, the conventional swinging structure is replaced by a lateral movement method, thereby reducing the space and significantly improving the transmission efficiency.

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