CN211206685U - Underground cable intermediate head fault positioning device - Google Patents

Abstract

The utility model provides an underground cable intermediate head fault locating device, including positioning seat, bush, end cover and fixed subassembly, the positioning seat includes constant head tank and bush groove, and the bush setting is in the bush groove, the inside of positioning seat be provided with can with bolt complex be connected the corner post, the both ends of positioning seat are provided with sealed pad and end cover, fixed subassembly is including playing hunch portion and horizontal part, and the side of playing hunch portion is provided with the pipe box of two slopes, and threaded connection has fastening bolt in the pipe box, is provided with counter sink and connecting bolt on the horizontal part, and the bottom surface of horizontal part is provided with washer groove and spring pad, is provided with on the positioning seat and lets out the hole and inlay the rubber buffer wherein. The utility model provides a fixed subassembly can be fixed the intermediate head on the positioning seat steadily, realizes the purpose of locking, guarantees to install and obtains stable signal at the inside response part of positioning seat, reasonable in design, simple structure, stability are good, are fit for extensive the popularization.

Description

Underground cable intermediate head fault positioning device

Technical Field

The utility model belongs to the technical field of power monitoring equipment, especially, relate to an underground cable intermediate head fault locating device.

Background

An intermediate joint is generally referred to as a cable intermediate joint, i.e. a cable joint in the middle of a cable run. The intermediate connector is a cable accessory for the intermediate connection of cross-linked cables or oil-immersed cables of various voltage classes. The cable sealing device has the main functions of ensuring smooth circuit, keeping the cable sealed, ensuring the insulation grade at the cable joint and ensuring safe and reliable operation.

With the popularization of power cabling engineering, the accident rate of cables is increased, and a great deal of facts prove that most cable accidents are related to cable accessories, particularly cable intermediate joints. Due to the quality and the installation process, once the cable intermediate joint explodes, other cables which are arranged in the same ditch side by side are damaged, and a cable fire disaster can be caused seriously, so that the irreparable loss is caused to the whole power system. In order to accurately position the failed intermediate joint, monitoring (detecting) devices must be installed at all intermediate joint positions to monitor and position the slight low-frequency partial discharge and the high-frequency partial discharge caused by insulation damage, internal discharge, temperature rise and the like in real time, and no corresponding positioning device exists in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the technical problem that above-mentioned intermediate head exists in the aspect of the fault monitoring location, provide a reasonable in design, simple structure, be convenient for establish with the intermediate head and be connected and put an underground cable intermediate head fault location device of technique and internet of things based on the office.

In order to achieve the above object, the present invention adopts the technical solution that the utility model provides an underground cable intermediate head fault positioning device, which comprises a positioning seat, wherein the positioning seat comprises a positioning groove which is arranged at the middle position of the positioning seat and extends along the length direction of the positioning seat, a lining groove is arranged in the positioning groove, a lining is arranged in the lining groove, the positioning seat is of a shell structure, two ends of the positioning seat are open ports, a connecting corner post which is consistent with the positioning seat in length and is integrally arranged is arranged at the inner corner of the positioning seat, a threaded hole is arranged at the center of the connecting corner post, two ends of the positioning seat are respectively provided with an end cover, a sealing gasket is arranged between the end cover and the positioning seat, two fixing components are symmetrically arranged at the top of the positioning seat, each fixing component comprises an arch-raising part and horizontal parts which are arranged at two ends of the arch-raising part, two, threaded connection has fastening bolt in the pipe box, be provided with the counter bore on the horizontal part, be provided with the connecting bolt that can connect fixed subassembly and positioning seat in the counter bore, the position that the bottom surface of horizontal part corresponds the counter bore is provided with the gasket groove, be provided with the spring pad in the gasket groove, be provided with on the positioning seat and let out the ability hole, it is provided with the rubber buffer to let out in the ability hole.

Preferably, the outward surface of the bushing is one of a cylindrical surface, a prismatic surface and a spindle surface.

Preferably, heat dissipation strips are arranged on two sides of the positioning seat.

Preferably, the mounting surface of the pipe sleeve is a surface of each arch facing away from the other arch.

Compared with the prior art, the utility model discloses an advantage lies in with positive effect:

the utility model provides a fault location device for an intermediate joint of an underground cable, wherein a positioning seat and a fixing component are used for placing the intermediate joint, and the intermediate joint can be stably fixed on the positioning seat by utilizing the fixing component, so that the aim of locking is realized, and a sensing part arranged in the positioning seat is ensured to obtain a stable signal; meanwhile, the device can be prevented from being punctured by the energy leakage hole. The utility model relates to a rationally, simple structure, stability are good, are fit for extensive the popularization.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a front view of a device for locating a fault of an intermediate joint of an underground cable provided by an embodiment;

FIG. 2 is an isometric view of an underground cable intermediate joint fault locating device provided by an embodiment;

FIG. 3 is a schematic diagram of a cylindrical liner structure provided by an embodiment;

FIG. 4 is a schematic view of a prismatic surface bushing configuration provided by an embodiment;

FIG. 5 is a schematic view of a spindle face bushing configuration according to an exemplary embodiment;

in the above figures, 1, positioning seat; 1a, a positioning groove; 1b, a bushing slot; 1c, connecting corner posts; 1d, an energy release hole; 2. a bushing; 3. an end cap; 4. a fixing assembly; 41. an arching portion; 42. a horizontal portion; 43. pipe sleeve; 44. fastening a bolt; 45. a countersunk hole; 46. a connecting bolt; 47. a gasket groove; 48. a spring pad; 5. and a rubber plug.

Detailed Description

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" used herein refer to the same directions as the drawings, and do not limit the structure.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the present invention is not limited to the limitations of the specific embodiments of the present disclosure.

Embodiment, as shown in fig. 1-5, the utility model provides an underground cable intermediate head fault location device, including a positioning seat 1, the positioning seat 1 includes a positioning groove 1a disposed at its middle position and extending along its length direction, a bushing groove 1b is disposed in the positioning groove 1a, a bushing 2 is disposed in the bushing groove 1b, the positioning seat is of a shell structure and has two open ends, a connecting corner post 1c having the same length as the positioning seat 1 and integrally disposed is disposed at an inner corner of the positioning seat 1, a threaded hole is disposed at the center of the connecting corner post 1c, an end cover 3 is disposed at each end of the positioning seat 1, a sealing gasket (not shown in the figure) is disposed between the end cover 3 and the positioning seat 1, two fixing components 4 are symmetrically disposed at the top of the positioning seat 1, the fixing components 4 include an arch portion 41 and horizontal portions 42 disposed at two ends of the arch portion 41, two inclined pipe sleeves 43 are symmetrically arranged on the side face of the arch-shaped part 41, fastening bolts 44 are connected in the pipe sleeves 43 in a threaded mode, a countersunk hole 45 is formed in the horizontal part 42, a connecting bolt 46 capable of connecting the fixing component and the positioning seat 1 is arranged in the countersunk hole 45, a gasket groove 47 is formed in the position, corresponding to the countersunk hole 45, of the bottom face of the horizontal part 42, a spring gasket 48 is arranged in the gasket groove 47, an energy leakage hole 1d is formed in the positioning seat 1, and a rubber plug 5 is arranged in the energy leakage hole 1 d.

In this device, positioning seat 1 is shell structure mainly used for placing induction component in order, like on-line monitoring sensor and environment humiture salt density sensor to put, carry out real-time supervision location to the slight low frequency office that arouses such as insulating damage, internal discharge, temperature rise, high frequency office. Specifically, the positioning seat 1 and the fixing component 4 are main functional components for locking the intermediate joint, for example, fastening bolts on the fixing component 4 can be tightened or loosened to fasten and loosen the intermediate joint; the bush 2 serves to reduce wear, while the bush groove 1b in the positioning groove 1a serves to confine the bush and to mount the bush 2, preventing it from rotating, while the end cap 3 serves to limit axial movement of the bush 2 in addition to sealing against the fixed seat. The connecting corner post 1c provided by the device is connected with the end cover 3 through the bolt, and the integral penetrating structural form can improve the integral compressive strength of the fixed seat and prolong the effective service life of the fixed seat; the spring pad 48 at the bottom of the horizontal portion 42 can improve the pre-tightening degree of the fastening bolt and the pipe sleeve, and particularly, in the working state, the spring pad 48 can further reduce the matching gap between the matching surfaces of the threads (threads), so that the locking effect is good. The breakdown probability of the device caused by unstable or overhigh voltage at the middle joint can be effectively reduced by arranging the energy leakage hole 1d on the positioning seat 1; and the rubber plug 5 can reduce the exchange quantity of internal and external media, but keeps weak respiration to avoid the humidity in the fixing seat.

As shown in fig. 3-5, the outward surface of the bushing is one of a cylindrical surface, a prismatic surface and a spindle surface in consideration of the variety of the external contour shapes of the intermediate joint, such as a cylindrical surface, a prismatic surface or a spindle surface. Like this, the intermediate head of different shapes uses with the bush 2 cooperation that corresponds the shape separately, reduces the fit clearance between intermediate head and the bush to reach the purpose that improves the stability of intermediate head in the fixing base. It should be noted that through holes may be provided on the surface of the bushing 2 that is engaged with the intermediate joint to meet the operational requirements of the inductive component.

In order to facilitate the improvement install the operating efficiency at this device inside response part, the utility model discloses be provided with the heat dissipation strip (not drawn in the picture) in the both sides of positioning seat 1, the heat dissipation strip mainly promotes the heat dissipation with the form and the 1 integrated into one piece of positioning seat of fin, through increasing positioning seat 1 and external area of contact.

Further, the utility model provides a pipe box 43's installation face is every arch portion 41 and the face that another arch portion 41 deviates from mutually, that is to say, pipe box 43 is fixed with the maximum possible length with the intermediate head, and its effectual working length is favorable to guaranteeing the stability of the inside response part signal of fixing base, reduces the detection error.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims (4)

1. The fault positioning device for the intermediate joint of the underground cable is characterized by comprising a positioning seat, wherein the positioning seat comprises a positioning groove which is arranged in the middle of the positioning seat and extends along the length direction of the positioning seat, a lining groove is formed in the positioning groove, a lining is arranged in the lining groove, the positioning seat is of a shell structure, two ends of the positioning seat are open ports, a connecting corner post which is consistent with the positioning seat in length and is integrally arranged at the inner corner of the positioning seat, a threaded hole is formed in the center of the connecting corner post, two ends of the positioning seat are respectively provided with an end cover, a sealing gasket is arranged between the end cover and the positioning seat, two fixing components are symmetrically arranged at the top of the positioning seat, each fixing component comprises an arch-raising portion and horizontal portions positioned at two ends of the arch-raising portion, two inclined pipe sleeves are symmetrically arranged on the side surfaces of the arch, be provided with the counter bore on the horizontal part, be provided with the connecting bolt that can connect fixed subassembly and positioning seat in the counter bore, the position that the bottom surface of horizontal part corresponds the counter bore is provided with the gasket groove, be provided with the spring pad in the gasket groove, be provided with on the positioning seat and let out the ability hole, it is provided with the rubber buffer in the ability hole to let out.

2. The underground cable intermediate joint fault locating device of claim 1, wherein the outwardly facing surface on the bushing is one of a cylindrical surface, a prismatic surface, and a spindle surface.

3. The underground cable intermediate joint fault locating device of claim 2, wherein heat dissipation strips are arranged on two sides of the locating seat.

4. A device as claimed in claim 3, wherein the mounting face of the shroud is the face of each arch which faces away from the other arch.

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