Cable indoor terminal conversion device

Abstract

The invention discloses a cable indoor terminal conversion device. The device comprises a fixed flange; the connector is sleeved on the fixed flange; the bypass quick interface assembly is arranged at one end part of the connector; the binding post assembly is used for being connected with an indoor terminal at the tail end of the cable in a matched mode, the binding post assembly is connected in the connector in a sleeved mode, and the binding post assembly comprises a binding post body, a contact finger arranged at one end of the binding post body and an insulating layer wrapping the binding post body and the contact finger; the cable tail end indoor terminal comprises a cable end and a cable tail end indoor terminal body connected to the cable end, and one end of the cable tail end indoor terminal body is detachably connected to the other end, opposite to the binding post body, of the binding post body. And a waterproof insulating component. By implementing the cable indoor terminal conversion device, the cable wiring joint and the bypass quick-plug terminal wiring joint which are connected with the high-voltage switch cabinet can be adaptively converted; the structure is simple and reasonable, and maintenance and operation cost control are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of live working conversion joints, and in particular to an indoor cable terminal conversion device. Background Art

[0002] In the existing technology, due to the wide impact of power outages in substations, a variety of non-stop or short-term power outage operations are gradually being carried out as the optimal solution, among which bypass operations are the safest and most convenient. However, the incoming and outgoing cables of the high-voltage switch cabinets in existing substations mostly adopt the user's internal and external terminal wiring method, while the bypass mostly adopts the quick-plug terminal wiring method. The two methods are completely incompatible, and it is very difficult to use bypass equipment for power conversion.

[0003] Currently, the market uses cable distribution boxes for connection, but this method occupies a large area and is not suitable for on-site operations. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a cable indoor terminal conversion device, which can adapt to the conversion of cable connection joints and bypass quick-plug terminal connection joints connected to high-voltage switch cabinets; the structure is simple and reasonable, which is conducive to repair, maintenance and control of operating costs.

[0005] In order to solve the above technical problems, the present invention provides a cable indoor terminal conversion device, which is used for adapting and converting the cable connection joint and bypass quick-plug terminal connection joint connected to the high-voltage switch cabinet, and is characterized in that it includes: a fixed flange; a connector sleeved on the fixed flange; a bypass quick interface component adapted to be connected to the bypass quick-plug terminal connection joint, and the bypass quick interface component is installed at one end of the connector; a terminal post component adapted to be connected to the indoor terminal of the cable end, and the terminal post component is sleeved in the connector, and the terminal post component includes: a terminal post body, a contact finger installed at one end of the terminal post body, and an insulating layer covering the outside of the terminal post body and the contact finger; the indoor terminal of the cable end includes: a cable end head and a cable end indoor terminal connected to the cable end head, and one end of the cable end indoor terminal is detachably connected to the other end opposite to the terminal post body; and a waterproof insulation component, wherein: one end of the waterproof insulation component is fastened to the cable end head, and the other end opposite to the waterproof insulation component is supported and fixed by the fixed flange.

[0006] Among them, the indoor terminal at the end of the cable is bolted to the terminal body.

[0007] Among them, the opposite ends of the waterproof insulation component respectively enclose the fixed flange and the cable end to form a hollow accommodating space, and the end of the terminal body connected to the indoor terminal of the cable end and the indoor terminal of the cable end are accommodated in the hollow accommodating space.

[0008] Among them, the waterproof insulation component includes: a first insulating tube, one end of the first insulating tube is sealed and connected to the fixed flange; a second insulating tube, one end of the second insulating tube is sealed and clamped on the other end opposite to the first insulating tube; a waterproof sleeve, one end of the waterproof sleeve is sealed and clamped on the other end opposite to the second insulating tube, and the opposite end of the waterproof sleeve is sleeved on the cable end; and a shrinkable metal shielding net, the shrinkable metal shielding net is covered on the outside of the first insulating tube and the waterproof sleeve, one end of the shrinkable metal shielding net is fastened to the fixed flange, and the other end of the shrinkable metal shielding net is sleeved on the cable end.

[0009] The invention also includes: a grounding wire and a grounding steel bar. One end of the grounding wire is connected to the retractable metal shielding net, and the other end of the grounding wire is connected to the grounding steel bar.

[0010] The fixing flange is an aluminum alloy ring structure, and the connecting head is a stainless steel round tube, which is bonded to the surface of the insulating layer.

[0011] The insulating layer is made of EPDM rubber material and has an umbrella-shaped structure.

[0012] Among them, the bypass quick interface assembly includes: a connecting sleeve connected to the connecting head, a limiting sleeve clamped on the outside of the connecting sleeve and a sliding sleeve clamped on the inside of the connecting sleeve, wherein: the connecting sleeve and the sliding sleeve are respectively provided with assembly positions for adapting steel balls, and the limiting sleeve is provided with an unlocking groove for moving the steel balls.

[0013] The bypass quick interface assembly further comprises: a retaining spring connected between the connecting sleeve and the limiting sleeve.

[0014] The bypass quick interface assembly further comprises: a first spring connected to the sliding sleeve and a second spring connected to the limiting sleeve.

[0015] The cable indoor terminal conversion device of the present invention has the following beneficial effects: the cable indoor terminal conversion device comprises: a fixing flange; a connector sleeved on the fixing flange; a bypass quick interface component adapted to connect to a bypass quick-plug terminal wiring joint, the bypass quick interface component is mounted on one end of the connector; a terminal assembly adapted to connect to a cable end indoor terminal, the terminal assembly is sleeved in the connector, the terminal assembly comprises: a terminal body, a contact finger mounted on one end of the terminal body, and an insulating layer covering the terminal body and the contact finger; the cable end indoor terminal comprises: a cable end and a cable end indoor terminal connected to the cable end, one end of the cable end indoor terminal is detachably connected to the other end opposite to the terminal body; and a waterproof insulation component, wherein: one end of the waterproof insulation component is fastened to the cable end, and the other end opposite to the waterproof insulation component is supported and fixed by the fixing flange, and can adapt to conversion of the cable wiring joint and the bypass quick-plug terminal wiring joint connected to the high-voltage switch cabinet; the structure is simple and reasonable, which is conducive to repair, maintenance and control of operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic cross-sectional structure diagram of a cable indoor terminal conversion device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figure 1 FIG. 1 shows a first embodiment of the indoor cable terminal conversion device of the present invention.

[0020] The cable indoor terminal conversion device in this embodiment is used to adapt and convert the cable connection joints and bypass quick-plug terminal connection joints connected to the high-voltage switch cabinet. It can quickly connect the indoor and outdoor terminals with the bypass quick-plug terminals, and has good insulation performance, small size, easy installation, and adaptability to small space environments.

[0021] The cable indoor terminal conversion device includes: a fixing flange 9; a connector 8 sleeved on the fixing flange 9; a bypass quick interface component adapted to be connected to a bypass quick-plug terminal wiring connector, the bypass quick interface component is installed at one end of the connector 8; a terminal assembly adapted to be connected to the indoor terminal of the cable end, the terminal assembly is sleeved in the connector 8, the terminal assembly includes: a terminal body 10, a contact finger 11 installed at one end of the terminal body 10, and an insulating layer 12 covering the outside of the terminal body 10 and the contact finger 11; the cable end indoor terminal includes: a cable end 19 and a cable end indoor terminal 20 connected to the cable end 19, one end of the cable end indoor terminal 20 is detachably connected to the other end opposite to the terminal body 10; and a waterproof insulation component.

[0022] Among them: one end of the waterproof insulation component is fastened to the cable terminal 19, and the other end of the waterproof insulation component opposite is supported and fixed by the fixing flange 9.

[0023] In specific implementation, the fixing flange 9 is an aluminum alloy ring structure, which is installed on the connector 8 and fixes the first insulating tube 13. The connector 8 is a stainless steel round tube, which is bonded to the surface of the insulating layer 12. The outer surface of the connector 8 is connected to the fixing flange 9. The function of the connector 8 is to fix the bypass quick interface assembly. The insulating layer 12 is made of EPDM rubber material and is an umbrella skirt structure.

[0024] The bypass quick interface assembly includes: a connecting sleeve 1 connected to the connecting head 8, a limiting sleeve 3 clamped on the outside of the connecting sleeve 1 and a sliding sleeve 5 clamped on the inside of the connecting sleeve 1, wherein: the connecting sleeve 1 and the sliding sleeve 5 are respectively provided with assembly positions for adapting steel balls, and the limiting sleeve 3 is provided with an unlocking groove for moving the steel balls.

[0025] Preferably, the bypass quick interface assembly further includes: a retaining spring 2 connected between the connecting sleeve 1 and the limiting sleeve 3 .

[0026] Preferably, the bypass quick interface assembly further includes: a first spring 6 connected to the sliding sleeve 5 and a second spring 7 connected to the limiting sleeve 3 .

[0027] During implementation, the connecting sleeve 1 is a stainless steel round tube structure, one end of the connecting sleeve 1 has a larger inner diameter and an outer diameter, and the other end has a smaller inner diameter and an outer diameter, and a hole for installing a steel ball is provided on the inner wall. The function of the connecting sleeve 1 is to fix the limit sleeve 3, the sliding sleeve 5 and the steel ball.

[0028] The retaining spring 2 is a stainless steel double-layer retaining ring. The function of the retaining spring 2 is to clamp the limiting sleeve 3 so that it does not fall out of the connecting sleeve 1. The limiting sleeve 3 is a stainless steel round tube with a smaller inner diameter at one end and a larger inner diameter at the other end. A groove for accommodating a steel ball is left on the inner wall of the end with a smaller inner diameter of the limiting sleeve 3. The function of the limiting sleeve 3 is to facilitate manual control of the movement of the marble when the interface is unlocked.

[0029] The steel ball is a standard stainless steel ball of a certain size, and its function is to lock the bypass connector connected to the quick interface. The sliding sleeve 5 is a stainless steel round tube with a larger outer diameter at one end. The function of the sliding sleeve 5 is to prevent the steel ball from falling out of the connecting sleeve when the interface is unlocked.

[0030] The first spring 6 is a stainless steel spring with a certain inner diameter and length, and its function is to provide power for the sliding sleeve 5 to return to the initial position. The second spring 7 is a stainless steel spring with a slightly larger inner diameter, and its function is to provide power for the limiting sleeve 3 to return to the initial position.

[0031] Furthermore, the terminal body 10 is a conductor of the integral device, and is a copper round rod structure, which is bolted to the indoor terminal 20 at the end of the cable. The contact finger 11 is connected to one end of the terminal body 10, and the function of the contact finger 11 is to increase the contact area between the copper conductors and enhance the current carrying capacity.

[0032] Furthermore, the opposite ends of the waterproof insulating component respectively enclose the fixing flange 9 and the cable end 19 to form a hollow accommodating space T, and the end of the terminal body 10 connected to the cable end indoor terminal 20 and the cable end indoor terminal 20 are accommodated in the hollow accommodating space T.

[0033] In this embodiment, the waterproof insulation component includes: a first insulating tube 13, one end of the first insulating tube 13 is sealed and connected to the fixed flange 9; a second insulating tube 14, one end of the second insulating tube 14 is sealed and clamped on the other end opposite to the first insulating tube 13; a waterproof sleeve 15, one end of the waterproof sleeve 15 is sealed and clamped on the other end opposite to the second insulating tube 14, and the opposite end of the waterproof sleeve 15 is sleeved on the cable terminal 19; and a shrinkable metal shielding mesh 16, the shrinkable metal shielding mesh 16 is covered on the outside of the first insulating tube 13 and the waterproof sleeve 15, one end of the shrinkable metal shielding mesh 16 is fastened to the fixed flange 9, and the other end of the shrinkable metal shielding mesh 16 is sleeved on the cable terminal 19.

[0034] In practice, the first insulating tube 13 is a circular tube structure made of epoxy resin, which is sleeved on the insulating layer 12 and connected to the fixing flange 9. The second insulating tube 14 is a circular tube structure made of epoxy resin, which is sleeved on the inner wall of the first insulating tube 13.

[0035] The waterproof sleeve 15 is a rubber round tube structure with elasticity, which covers and overlaps between the cable end 19 and the second insulating tube 14. The function of the waterproof sleeve 15 is to seal the gap between the second insulating tube 14 and the cable end 19 and to prevent water.

[0036] The metal shielding net 16 is an elastic metal copper net, and the metal shielding net 16 covers the surfaces of the fixing flange 9, the first insulating tube 13, the second insulating tube 14, the waterproof sleeve 15 and the cable terminal 19. The function of the metal shielding net 16 is to shield the entire device and connect it to the ground wire, and has a shielding function.

[0037] Furthermore, the cable indoor terminal conversion device in this embodiment further includes: a grounding wire 17 and a grounding steel bar 18, one end of the grounding wire 17 is connected to the retractable metal shielding net 16, and the other end of the grounding wire 17 is connected to the grounding steel bar 18. The grounding steel bar 18 is a cylindrical steel rod, one end of which is long and pointed for easy driving into the ground, and the other end has a connection hole connected to the ground wire. The function of the grounding steel bar 18 is to drive into the ground to complete the grounding.

[0038] The invention provides a cable indoor terminal conversion device, which has the following beneficial effects: the cable indoor terminal conversion device comprises: a fixing flange; a connector sleeved on the fixing flange; a bypass quick interface component adapted to connect to a bypass quick-plug terminal wiring joint, the bypass quick interface component being mounted on one end of the connector; a terminal assembly adapted to connect to a cable end indoor terminal, the terminal assembly being sleeved in the connector, the terminal assembly comprising: a terminal body, a contact finger mounted on one end of the terminal body, and an insulating layer covering the terminal body and the contact finger; the cable end indoor terminal comprises: a cable end and a cable end indoor terminal connected to the cable end, one end of the cable end indoor terminal being detachably connected to the other end opposite to the terminal body; and a waterproof insulation component, wherein: one end of the waterproof insulation component is fastened to the cable end, and the other end opposite to the waterproof insulation component is supported and fixed by the fixing flange, and can adapt to convert the cable wiring joint and the bypass quick-plug terminal wiring joint connected to the high-voltage switch cabinet; the structure is simple and reasonable, which is conducive to repair, maintenance and control of operating costs.

Claims

1. A cable indoor terminal conversion device, used for adapting and converting the cable connection joints and bypass quick-plug terminal connection joints connected to the high-voltage switch cabinet, characterized in that: include: Fixed flange; A connector sleeved on the fixed flange; A bypass quick interface component adapted to connect to a bypass quick-plug terminal wiring connector, wherein the bypass quick interface component is installed at one end of the connector; A terminal assembly adapted to connect to an indoor terminal at the end of a cable, the terminal assembly being sleeved in the connector, and comprising: a terminal body, a contact finger mounted at one end of the terminal body, and an insulating layer covering the terminal body and the contact finger; The cable end indoor terminal comprises: a cable end head and a cable end indoor terminal connected to the cable end head, one end of the cable end indoor terminal being detachably connected to the other end of the terminal body opposite to the terminal body; and A waterproof insulation component, wherein: one end of the waterproof insulation component is fastened to the cable end, and the other end of the waterproof insulation component opposite is supported and fixed by the fixing flange.

2. The cable indoor terminal conversion device according to claim 1, characterized in that: The indoor terminal at the end of the cable is bolted to the terminal body.

3. The cable indoor terminal conversion device according to claim 1, characterized in that: The opposite ends of the waterproof insulation component respectively enclose the fixing flange and the cable end to form a hollow accommodating space, and the end of the terminal body connected to the indoor terminal of the cable end and the indoor terminal of the cable end are accommodated in the hollow accommodating space.

4. The cable indoor terminal conversion device according to claim 1 or 3, characterized in that: The waterproof insulation assembly comprises: A first insulating tube, one end of which is sealed and connected to the fixing flange; A second insulating tube, one end of which is sealed and clamped on the other end opposite to the first insulating tube; a waterproof sleeve, one end of which is sealed and clamped on the other end opposite to the second insulating tube, and the other end of which is sleeved on the cable terminal; and A shrinkable metal shielding mesh is coated on the outside of the first insulating tube and the waterproof sleeve, one end of the shrinkable metal shielding mesh is fastened to the fixing flange, and the other end of the shrinkable metal shielding mesh is sleeved with the cable end.

5. The cable indoor terminal conversion device according to claim 4, characterized in that: Also includes: A grounding wire and a grounding steel bar, wherein one end of the grounding wire is connected to a retractable metal shielding net, and the other end of the grounding wire is connected to the grounding steel bar.

6. The cable indoor terminal conversion device according to claim 1, characterized in that: The fixing flange is an aluminum alloy ring structure, and the connecting head is a stainless steel round tube, which is bonded to the surface of the insulating layer.

7. The cable indoor terminal conversion device according to claim 1, characterized in that: The insulating layer is made of EPDM rubber material and has an umbrella-shaped structure.

8. The cable indoor terminal conversion device according to claim 1, characterized in that: The bypass quick interface assembly includes: a connecting sleeve connected to the connecting head, a limiting sleeve clamped on the outside of the connecting sleeve and a sliding sleeve clamped on the inside of the connecting sleeve, wherein: the connecting sleeve and the sliding sleeve are respectively provided with assembly positions for adapting steel balls, and the limiting sleeve is provided with an unlocking groove for moving the steel balls.

9. The cable indoor terminal conversion device according to claim 1, characterized in that: The bypass quick interface assembly also includes: a retaining spring connected between the connecting sleeve and the limiting sleeve.

10. The cable indoor terminal conversion device according to claim 1, characterized in that: The bypass quick interface assembly also includes: a first spring connected to the sliding sleeve and a second spring connected to the limiting sleeve.

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