CN210866498U

CN210866498U - Strenghthened type graphite ground connection downlead

Info

Publication number: CN210866498U
Application number: CN201922132727.6U
Authority: CN
Inventors: 李景明; 韩佳锐; 吴家田; 马严森; 吴力思
Original assignee: Guangdong Power Grid Co Ltd; Zhanjiang Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Guangdong Power Grid Co Ltd; Zhanjiang Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2019-12-02
Filing date: 2019-12-02
Publication date: 2020-06-26
Anticipated expiration: 2029-12-02

Abstract

The utility model discloses a strenghthened type graphite ground connection downlead, including joint, ground connection downlead body includes the graphite cable and the peripheral protective weaving layer that sets up of graphite cable, the one end of ground connection downlead body with the one end of joint is connected, the other end of joint is used for being connected with the ground connection round steel. The graphite is used as the main material of the grounding down lead body to ensure that the grounding down lead body is not corroded, and the added protective woven layer ensures the mechanical strength of the grounding down lead, so that the grounding down lead can be effectively prevented from being broken, and the service life of the grounding down lead is further prolonged. The grounding down lead adopting graphite as a main material is convenient to transport, and complex procedures such as welding, cutting and the like which are originally needed when a metal material is adopted as a grounding material are omitted in the construction process. The construction cost is reduced.

Description

Strenghthened type graphite ground connection downlead

Technical Field

The utility model relates to a power equipment protects technical field, especially relates to a strenghthened type graphite ground connection downlead.

Background

The lightning protection of the power distribution network equipment mainly comprises the steps that a lightning arrester and a grounding down lead are used for discharging large current during lightning stroke to a grounding device buried underground, and lightning stroke damage of the power distribution equipment is avoided. At present, metal materials such as round steel, flat steel and the like are generally adopted as a connecting circuit between a lightning arrester and an underground grounding device for lightning protection. However, metal materials such as round steel and flat steel are seriously corroded after the metal grounding down lead operates for 3-5 years in coastal areas due to high air salinity, particularly the corrosion is more serious at the interface of soil and air, and the grounding resistance of a grounding grid cannot meet the standard requirement of safe operation of a system after the corrosion. The underground downlead is transformed, and a large amount of manpower and material resources are required to be input in each transformation construction; moreover, the metal grounding material is difficult to transport and construct and easy to be stolen.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve present metal ground connection downlead and lead to have the easy emergence corruption, reduce electric conductive property, life is short to the inconvenient problem of construction provides a strenghthened type graphite ground connection downlead.

In order to realize the purpose of the utility model, the technical means adopted is as follows:

the utility model provides a strenghthened type graphite ground connection downlead, includes joint, ground connection downlead body includes the graphite cable and the peripheral protective weaving layer that sets up of graphite cable, the one end of ground connection downlead body with the one end of joint is connected, the other end of joint is used for being connected with the ground connection round steel.

In the above scheme, the ground connection downlead body adopts graphite as the main material, guarantees that it is not corroded, and the mechanical strength of the protection weaving layer guarantee ground connection downlead that adds can effectually prevent outer broken, has further strengthened the life of ground connection downlead.

Preferably, the protective woven layer is a stainless steel wire woven layer. In this preferred scheme, stainless steel wire weaving layer can effectively prevent its outer broken when guaranteeing ground connection downlead mechanical strength, has further strengthened ground connection downlead's life.

Preferably, stainless steel strip flexible graphite reinforcing filler is arranged in the graphite cable. In the preferred scheme, the corrosion-resistant stainless steel band is added in the graphite cable, so that the mechanical strength of the graphite cable is increased while the graphite cable is prevented from being corroded.

Preferably, the grounding downlead body further comprises a heat shrink tube, and the heat shrink tube is sleeved outside the stainless steel wire braided layer. In the preferred scheme, the heat shrink tube with strong ageing resistance is additionally arranged, so that the grounding down lead body can be prevented from being washed by rainwater, and the service life of the grounding down lead body is prolonged.

Preferably, the heat shrink tube is a heat shrink tube with a color warning mark on the surface. In this preferred scheme, set up colour warning sign and can ensure operation personnel safety.

Preferably, the heat-shrinkable tube is a heat-shrinkable tube with a black-yellow alternate color warning mark on the surface. In the preferred scheme, the setting of the black-yellow alternate color warning identification can guarantee the safety of operators.

Preferably, the heat shrinkable tube is a silicone rubber heat shrinkable tube. In the preferred scheme, the silicone rubber heat-shrinkable tube can ensure the safety of operators.

Preferably, the stainless steel wire braid layer and the heat shrink tube are sequentially wrapped on the periphery of the graphite cable from inside to outside.

Preferably, the joint is of tubular construction.

Preferably, the joint is a stainless steel pipe, and one end of the stainless steel pipe is fixedly connected with one end of the grounding down lead body in a hydraulic fastening mode. In this preferred scheme, when the ground lead is connected with underground metal round steel ground net, put into the one end of ground lead body from a port of stainless steel pipe, then insert ground round steel to ground lead body in from another port that adds stainless steel pipe, then use hydraulic pressure pincers to tighten up.

Compared with the prior art, the utility model discloses technical scheme's beneficial effect is:

the utility model discloses an adopt graphite as the main material of ground connection downlead body, add anticorrosive stainless steel band in its inside to wrap up in its periphery and set up stainless steel wire weaving layer and pyrocondensation pipe, increased the mechanical strength of ground connection downlead when guaranteeing that it is not corroded, and protect its outside to avoid the impact and the outer broken condition of rainwater, prolonged the life of ground connection downlead. In addition, the grounding down lead adopting graphite as a main material is convenient to transport, and complex procedures such as welding, cutting and the like which are originally needed when a metal material is adopted as a grounding material are omitted in the construction process. The construction cost is reduced.

Drawings

Fig. 1 is a sectional view of a ground down-lead body in example 1.

Fig. 2 is a sectional view of the ground down-lead body in embodiment 2.

FIG. 3 is a structural view of a joint in example 2.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent;

for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product;

it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.

Example 1

This embodiment 1 provides a strenghthened type graphite ground connection downlead, as shown in fig. 1, including joint 4, ground connection downlead body includes graphite cable 1 and the protective braid 2 of 1 peripheral settings of graphite cable, the one end of ground connection downlead body with the one end of joint 4 is connected, the other end of joint 4 is used for being connected with ground connection round steel.

The installation method of the embodiment 1: when the grounding down lead is connected with the underground metal round steel grounding net, one end of the grounding down lead body is placed into the connector 4 from one end port, then the grounding round steel is inserted into the grounding down lead body from the other end port of the connector 4, and then the grounding down lead is tightly clamped by using a hydraulic clamp.

Example 2

The embodiment 2 provides a reinforced graphite ground downlead, as shown in fig. 2 and 3, which includes a stainless steel tube and a ground downlead body, wherein the ground downlead body includes a graphite cable 1, and a stainless steel wire braid layer 11 and a heat shrink tube 3 which are sequentially wrapped around the graphite cable 1, wherein a stainless steel band flexible graphite reinforced filler 11 is arranged in the graphite cable 1, the heat shrink tube 3 is a silicon rubber heat shrink tube 3, and the surface of the heat shrink tube is provided with a black-yellow color warning mark; wherein one end of the stainless steel tube is fixedly connected with one end of the grounding downlead body in a hydraulic fastening mode, and the other end of the stainless steel tube is connected with the grounding round steel. In this embodiment 2, the stainless steel bands and the stainless steel wires are made of 304 stainless steel, which has strong corrosion resistance; the heat shrinkable tube 3 with strong ageing resistance is adopted, so that the service life of the grounding down lead is prolonged.

The installation method of embodiment 2: when the grounding down lead is connected with the underground metal round steel grounding net, one end of the grounding down lead body is placed into the stainless steel pipe from one port, then the grounding round steel is inserted into the grounding down lead body from the other port of the stainless steel pipe, and then the grounding down lead is tightly clamped by using a hydraulic clamp.

The terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent;

it is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a strenghthened type graphite ground connection downlead, its characterized in that, includes joint (4), ground connection downlead body includes graphite cable (1) and protective weaving layer (2) that graphite cable (1) periphery set up, the one end of ground connection downlead body with the one end of joint (4) is connected, the other end of joint (4) is used for being connected with ground connection round steel.

2. The reinforced graphite ground downlead of claim 1, characterized in that the protective braid (2) is a stainless steel wire braid.

3. The reinforced graphite down conductor according to claim 1, wherein a stainless steel band flexible graphite reinforcing filler (11) is arranged in the graphite cable (1).

4. The reinforced graphite ground downlead of claim 2, wherein the ground downlead body further comprises a heat shrinkable tube (3), the heat shrinkable tube (3) is sleeved outside the stainless steel wire braided layer.

5. The reinforced graphite ground downlead of claim 4, wherein the heat shrinkable tube (3) is a heat shrinkable tube (3) having a color warning mark on the surface.

6. The reinforced graphite ground downlead of claim 4, wherein the heat shrinkable tube (3) is a heat shrinkable tube (3) having a black and yellow color warning mark on the surface.

7. The reinforced graphite ground downlead of claim 4, wherein the heat shrink tube (3) is a silicone rubber heat shrink tube (3).

8. The reinforced graphite ground downlead of claim 4, wherein the stainless steel wire braid and heat shrink tube (3) are sequentially wrapped around the graphite cable (1) from inside to outside.

9. The reinforced graphite down conductor according to claim 1, wherein the joint (4) is of tubular construction.

10. The reinforced graphite grounding downlead of claim 1, wherein the joint (4) is a stainless steel tube, one end of the stainless steel tube is fixedly connected with one end of the grounding downlead body in a hydraulic fastening manner.