CN217543188U

CN217543188U - A base for 10kV arrester electrical test

Info

Publication number: CN217543188U
Application number: CN202221193757.3U
Authority: CN
Inventors: 余智超; 尤福春; 方向华
Original assignee: Nanping Power Supply Co Of State Grid Fujian Electric Power Co; State Grid Fujian Wuyishan Power Supply Co ltd; State Grid Fujian Electric Power Co Ltd
Current assignee: Nanping Power Supply Co Of State Grid Fujian Electric Power Co; State Grid Fujian Wuyishan Power Supply Co ltd; State Grid Fujian Electric Power Co Ltd
Priority date: 2022-05-19
Filing date: 2022-05-19
Publication date: 2022-10-04
Anticipated expiration: 2032-05-19

Abstract

The utility model relates to a base for 10kV arrester electrical test, including chassis, a plurality of supporting legs and earth connection, the supporting legs includes insulating sheath, punch-through screw rod and nut, the arrester jack that is used for installing the arrester is seted up at the chassis middle part, the chassis week portion is seted up the through-hole that equals supporting legs quantity, and the insulating sheath is nested in each through-hole, wear to establish in the insulating sheath the punch-through screw rod and lock through the nut, so that the supporting legs does not become the earial drainage passageway when being punctured in the arrester test process; the grounding wire is connected with the base. The base has good stability and safety, small volume and easy carrying.

Description

A base for 10kV arrester electrical test

Technical Field

The utility model relates to a base for 10kV arrester electrical test.

Background

At present, the electrical test of the 10kV lightning arrester is carried out in a transformer substation, and the test can be carried out only by using surrounding insulation objects to lean against the lightning arrester body. The stability of arrester in this kind of mode can't guarantee the test in-process, and the maximum voltage can reach 26kV to 27kV in 10kV arrester electrical test in-process, in case the arrester body takes place to topple over in the test in-process, and the high voltage of exerting on the arrester body will cause great threat to testing personnel's personal safety. In addition, because the arrester body leans on an insulating object (not an absolute insulator) in the test process, the leakage current value and the U1mA value data of the arrester under 0.75U1mA are influenced, and the test data of the arrester has certain deviation compared with the factory value.

Disclosure of Invention

An object of the utility model is to provide a base for 10kV arrester electrical test, this base stability and security are good, and are small, easily carry.

In order to achieve the above object, the utility model adopts the following technical scheme: a base for a 10kV lightning arrester electrical test comprises a chassis, a plurality of supporting legs and a grounding wire, wherein the supporting legs comprise insulating sleeves, core penetrating screw rods and nuts, lightning arrester jacks for mounting a lightning arrester are formed in the middle of the chassis, through holes with the number equivalent to that of the supporting legs are formed in the periphery of the chassis, the insulating sleeves are sleeved in the through holes, the core penetrating screw rods penetrate through the insulating sleeves and are locked through the nuts, and therefore the supporting legs do not serve as a current leakage channel when the lightning arrester is punctured in the test process; the grounding wire is connected with the base.

The base plate is a regular triangle base plate, and three through holes are formed in three corners of the regular triangle base plate so as to install the three supporting legs.

Further, the side length of the regular triangle chassis is 18cm.

Further, the chassis is made of a zinc-plated alloy.

Further, the insulating cover includes upper cover and lower cover, the lower cover comprises metal gasket and the insulating lantern ring of connecting in its upside, the upper cover penetrates from the through-hole upside, the lower cover entangles the upper cover from the chassis downside, the core screw rod that pierces through penetrates and wears out from the lower cover downside from the upper cover upside, the nut will pierce through the core screw rod from the lower cover downside and lock on metal gasket.

Further, the lower end of the lightning arrester is inserted into the lightning arrester jack of the chassis.

Further, the grounding wire is connected to the connecting hole of the chassis through a threaded connector.

Further, the grounding wire is a bare copper wire.

Compared with the prior art, the utility model discloses following beneficial effect has: this base simple structure, it is small, easily carry, support stable, reliable, guarantee that the arrester can not take place to empty when experimental to tester's personal safety has been ensured. In addition, the grounding part is characterized in that the tail end of the lightning arrester is inserted into the chassis, and a bare copper wire with good conductivity is used as a grounding wire of the base, so that a current leakage channel is formed when the lightning arrester is broken down in the test process, and the accuracy of the test data of the lightning arrester is improved. Therefore, the utility model discloses have very strong practicality, be convenient for implement popularization and application can realize the stable supporting 10kV arrester at the job site and develop experimental requirement.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a side view of an embodiment of the invention.

Fig. 3 is a schematic structural diagram of a chassis according to an embodiment of the present invention.

Detailed Description

The present invention will be further explained with reference to the drawings and the embodiments.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure herein. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

As shown in fig. 1-3, the present embodiment provides a base for an electrical test of a 10kV lightning arrester, which is used for fixing the 10kV lightning arrester, so that the lightning arrester body does not contact with other objects during the test process, thereby reducing the error of test data. The base includes chassis 1, a plurality of supporting legs and earth connection 2, the supporting legs includes insulating cover 3, punch-through screw rod 4 and

nut

5, 1 middle part on chassis is offered and is used for installing the arrester jack 101 of arrester, 1 week portion on chassis is offered and is equipped with the through-hole 102 that equals with supporting legs quantity, and each through-hole 102 endotheca insulating cover 3, wear to establish in the insulating cover 3 punch-through screw rod 4 and lock through nut 5, play the stabilizing action on the one hand, guarantee that the arrester can not take place to empty when experimental, threaten testing personnel's personal safety, on the other hand makes the supporting legs not become the earial drainage passageway when puncturing in the arrester test process. The upper end of the grounding wire is connected with the base, and the lower end of the grounding wire is grounded.

In this embodiment, the base includes three supporting legs, the chassis 1 is a regular triangle chassis and is made of galvanized alloy, the side length of the regular triangle chassis is 18cm, and three through holes are formed in three corners of the regular triangle chassis to mount the three supporting legs. So, three supporting legss of base utilize insulating material to separate core screw and chassis, do not regard 3 supporting legss as the earial drainage passageway when being punctured in the 10kV arrester test process.

In this embodiment, the insulating sheath 3 includes an upper sheath 301 and a lower sheath, the lower sheath is composed of a metal washer 302 and an insulating collar 303 connected to the upper side of the metal washer, the upper sheath 301 penetrates through the upper side of the through hole 102, the lower sheath covers the upper sheath 301 from the lower side of the chassis 1, the core-penetrating screw rod 4 penetrates through the upper side of the upper sheath 301 and penetrates out from the lower side of the lower sheath, and the nut locks the core-penetrating screw rod 4 on the metal washer 302 from the lower side of the lower sheath.

In the embodiment, the grounding part is to insert the tail end of the lightning arrester 6 into the lightning arrester jack 101 of the chassis 1 and to ground through the grounding wire 2, so that not only is the correct wiring of the lightning arrester in the test ensured, but also the current leakage function is realized when the lightning arrester is broken down in the test process. When the 10kV lightning arrester electrical test is carried out, only the tail end of the lightning arrester needs to be inserted into the base.

In the present embodiment, the grounding wire 2 is a bare copper wire (25 mm in cross-sectional area) with good conductivity ² ) The lightning arrester is connected to the connecting hole 103 of the chassis 1 through the threaded connecting piece, so that the tail end of the 10kV lightning arrester is reliably grounded, and the lightning arrester plays a role of a current drainage channel when being broken down in the test process.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made without departing from the spirit and scope of the invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A base for a 10kV lightning arrester electrical test is characterized by comprising a chassis, a plurality of supporting legs and a grounding wire, wherein the supporting legs comprise insulating sleeves, core penetrating screw rods and nuts, lightning arrester jacks for mounting a lightning arrester are formed in the middle of the chassis, through holes with the number equivalent to that of the supporting legs are formed in the periphery of the chassis, the insulating sleeves are sleeved in the through holes, the core penetrating screw rods penetrate through the insulating sleeves and are locked through the nuts, and therefore the supporting legs do not serve as current leakage channels when the lightning arrester is broken down in the test process; the grounding wire is connected with the base.

2. The base for the electrical test of the 10kV lightning arrester according to claim 1, wherein the base comprises three supporting legs, the base is a regular triangle base, and three through holes are formed in three corners of the regular triangle base so as to mount the three supporting legs.

3. The base for the electrical test of the 10kV lightning arrester as claimed in claim 2, wherein the side length of the regular triangle chassis is 18cm.

4. The base for the electrical test of the 10kV lightning arrester according to claim 1, wherein the chassis is made of galvanized alloy.

5. The base for the electrical test of the 10kV lightning arrester as claimed in claim 1, wherein the insulating sleeve comprises an upper sleeve and a lower sleeve, the lower sleeve is composed of a metal washer and an insulating sleeve ring connected to the upper side of the metal washer, the upper sleeve penetrates through the upper side of the through hole, the lower sleeve sleeves the upper sleeve from the lower side of the chassis, the core-penetrating screw penetrates through the upper sleeve from the upper side of the upper sleeve and penetrates out from the lower side of the lower sleeve, and the nut locks the core-penetrating screw on the metal washer from the lower side of the lower sleeve.

6. The base for the electrical test of the 10kV lightning arrester according to claim 1, wherein the lower end of the lightning arrester is inserted into a lightning arrester jack of the chassis.

7. The base for the electrical test of the 10kV lightning arrester according to claim 1, wherein the grounding wire is connected to a connecting hole of the chassis through a threaded connector.

8. The base for the electrical test of the 10kV lightning arrester according to claim 1, wherein the grounding wire is a bare copper wire.