CN216560692U - Anti-interference supporting device for zinc oxide arrester test - Google Patents

Abstract

The utility model relates to an anti-interference supporting device for a zinc oxide arrester test, which comprises a straight rod, a cross rod and a test wire connector, wherein the straight rod is connected with the cross rod through a connecting rod; the straight rod is hollow and provided with internal threads, the lower part of the outer wall of the straight rod is provided with a grounding bolt, the upper part of the outer wall of the straight rod is provided with a cross rod perpendicular to the straight rod, the cross rod is hollow and communicated with the straight rod, and the test wire joint is arranged at the end part of one end of the cross rod, which is far away from the straight rod; at least the outer walls of the straight rod and the cross rod are made of metal. The grounding bolt on the straight rod is used for being connected with the lightning arrester, the test wire connector on the cross rod is used for being connected with a coaxial cable of a test port of lightning arrester test equipment, and meanwhile, the straight rod is communicated with the cross rod. The straight rod is communicated with the cross rod to achieve an electric channel, the cross rod is communicated with the test wire connector, signal transmission is achieved very reliably, further, interference signals are shielded by means of external metal of the straight rod and the cross rod, interference suppression is achieved, and the test wire connector has the function of supporting wiring.

Description

Anti-interference supporting device for zinc oxide arrester test

Technical Field

The application relates to the technical field of lightning arrester testing, in particular to an anti-interference supporting device for a zinc oxide lightning arrester test.

Background

In the power environment, before the arrester is installed and used, a resistive current test needs to be performed on the arrester to ensure the normal operation of a power line.

When the resistive current of the zinc oxide arrester is tested, because the test current is weak, if the test current is interfered, the test result is influenced, and the test fails. The main reason still derives from the interference of on-the-spot electrified circuit to the power failure equipment, for the suppression on-the-spot interference, has taken the scheme of multiple adjustment wiring position, nevertheless all is unsatisfactory, for example the anti jamming unit is unstable with being connected of arrester, is built temporarily, has very strong randomness, and easy pine takes off, has influenced on-the-spot test efficiency.

SUMMERY OF THE UTILITY MODEL

The application provides an anti-interference support device for zinc oxide arrester test to solve the relatively poor problem of the anti-interference effect of current anti-jamming unit.

The technical scheme adopted by the application is as follows:

the utility model provides an anti-interference supporting device for a zinc oxide arrester test, which comprises a straight rod, a cross rod and a test wire connector, wherein the straight rod is connected with the cross rod through a connecting rod;

the straight rod is hollow and provided with internal threads, the lower part of the outer wall of the straight rod is provided with a grounding bolt, the upper part of the outer wall of the straight rod is provided with a cross rod perpendicular to the straight rod, the cross rod is hollow and communicated with the straight rod, and the test wire joint is arranged at the end part of one end of the cross rod, which is far away from the straight rod;

at least the outer walls of the straight rod and the cross rod are made of metal.

In an implementable embodiment, the straight rod comprises, in order from outside to inside, an outer metal layer, an insulating layer and an inner metal layer;

the outer wall of the outer metal layer is provided with a grounding bolt which can be connected with a lightning arrester connector;

and an internal thread hole penetrates through the outer metal layer, the insulating layer and the inner metal layer, the internal thread hole is axially vertical to the straight rod, and the hole depth is equal to the thickness of the straight rod.

Further, the internal thread hole is a step hole, and the aperture of the external metal layer is larger than that of the internal metal layer.

In one realizable embodiment, the crossbar includes, in order from the outside to the inside, an outer metal layer, an insulating layer, and an inner metal layer;

the inner metal layer is provided with an internal thread, and the internal thread of the inner metal layer is connected with the internal thread hole penetrating through the outer metal layer, the insulating layer and the inner metal layer through an external screw rod.

Furthermore, the test wire connector is a coaxial cable with a double-layer shielding structure, or a coaxial cable plus shielding rubber connector lug.

The technical scheme of the application has the following beneficial effects:

according to the anti-interference supporting device for the zinc oxide arrester test, the grounding bolt on the straight rod is used for being connected with the arrester, the test wire connector on the cross rod is used for being connected with the coaxial cable of the test port of the arrester test equipment, and meanwhile, the straight rod is communicated with the cross rod.

The straight rod is communicated with the cross rod to achieve an electric channel, the cross rod is communicated with the test wire connector, signal transmission is achieved very reliably, further, interference signals are shielded by means of external metal of the straight rod and the cross rod, interference suppression is achieved, and the test wire connector has the function of supporting wiring.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an anti-interference supporting device for a zinc oxide arrester test according to the present invention;

FIG. 2 is a schematic view of the cross bar of FIG. 1;

FIG. 3 is a schematic view of the straight rod of FIG. 1;

illustration of the drawings:

wherein, 1-straight rod; 11-a first outer metal layer; 12-a first insulating layer; 13-a first inner metal layer; 14-a ground bolt; 15-an internal threaded hole;

2-a cross bar; 21-external screw rod; 22-a second outer metal layer;

3-test line joint.

Detailed Description

Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following examples do not represent all embodiments consistent with the present application. But merely as exemplifications of some of the aspects of the application, as detailed in the claims.

Referring to fig. 1 to fig. 3, a schematic structural diagram of an anti-interference supporting device for a zinc oxide arrester test is shown.

The anti-interference supporting device for the zinc oxide arrester test comprises a straight rod 1, a cross rod 2 and a test wire connector 3;

the straight rod 1 is hollow and provided with internal threads, the lower part of the outer wall of the straight rod 1 is provided with a grounding bolt 14, the upper part of the outer wall of the straight rod 1 is provided with a cross rod 2 vertical to the straight rod 1, the cross rod 2 is hollow and communicated with the straight rod 1, and the test wire joint 3 is arranged at the end part of one end, far away from the straight rod 1, of the cross rod 2;

at least the outer walls of the straight rod 1 and the cross rod 2 are made of metal.

In an implementable embodiment, the straight rod 1 comprises, in order from the outside towards the inside, a first outer metal layer 11, a first insulating layer 12 and a first inner metal layer 13;

the outer wall of the first outer metal layer 11 is provided with a grounding bolt 14 which can be connected with a lightning arrester joint;

an internal threaded hole 15 penetrates through the first outer metal layer 11, the first insulating layer 12 and the first inner metal layer 13, the internal threaded hole 15 is axially perpendicular to the straight rod 1, and the hole depth is equal to the thickness of the straight rod 1.

Further, the internal thread hole 15 is a stepped hole, and the aperture of the first outer metal layer 11 is larger than that of the first inner metal layer 13.

In an implementable embodiment, the crossbar 2 comprises, in order from the outside to the inside, a second outer metal layer 22, a second insulating layer and a second inner metal layer;

the second inner metal layer has an internal thread, and the internal thread of the second inner metal layer is connected to the internal thread hole 15 penetrating through the second outer metal layer 22, the second insulating layer, and the second inner metal layer via an external screw 21.

Further, the test wire connector 3 is a coaxial cable with a double-layer shielding structure, or a coaxial cable plus shielding rubber connector lug. The test wire connector 3 is arranged on the lightning arrester testing device and can be regarded as a special cable for connecting the lightning arrester and the testing equipment.

As shown in fig. 1 to 3, the anti-interference support device for the zinc oxide arrester test is composed of three parts, namely a straight rod 1 (hollow internal thread pipeline), a hollow cross rod 2 vertically connected with the hollow internal thread pipeline, and a test wire connector 3 connected with a hollow area of the hollow cross rod 2.

Wherein, cavity internal thread pipeline horizontal direction trompil characteristic does: the aperture of the outer metal layer is larger than that of the inner metal layer. Therefore, when the hollow cross bar 2 and the straight bar 1 are fastened by the external screw 21, the short circuit of the metal of the inner layer and the outer layer of the straight bar 1 can not be caused.

Further, the test connector lug is directly welded or clamped with the hollow cross rod 2 to realize electrical connection.

The hollow cross bar 2 is fastened with the vertical hollow straight bar 1 (hollow internal thread pipe) by the external screw 21, because the length of the hollow external screw 21 is larger than the external metal layer of the hollow cross bar 2, as the external screw 21 extending from the left side of the figure 2, the external screw 21 is threaded and connected with the vertical hollow internal thread pipe. The inner metal of the hollow crossbar 2 (outer screw 21) and the inner pipe metal of the vertical hollow internally threaded pipe thus realize an electrical passage. The metal inside the hollow cross rod 2 is clamped or in threaded connection with the test wire connector 3, so that the transmission of test voltage and feedback current signals is realized very reliably. The shielding of interference signals is realized by utilizing the construction of external metal, the interference suppression is achieved, and the function of supporting wiring is achieved.

In the connection relation, the hollow cross rod 2 is vertically connected with the hollow straight rod 1, the influence of the coupling of an overhead line is very small, and the purpose of fixing the horizontal angle of the test line is achieved. During the test, the anti-interference supporting device for the whole external metal layer zinc oxide lightning arrester test is grounded through the grounding bolt 14 in a simple mode.

The lightning arrester test device effectively solves the problem of interference during lightning arrester test, and has good application prospect.

The lightning arrester testing device is connected with the metal head at the top of the lightning arrester through the internal thread of the straight rod 1 and connected with the lightning arrester testing equipment through the testing wire connector 3, so that the testing wire of the lightning arrester testing equipment is stably connected with the lightning arrester, and the lightning arrester testing device plays a role in supporting the testing wire; furthermore, the test wire and the lightning arrester can form an included angle of 90 degrees to inhibit interference; on the other hand, through the shielding design (namely, the outer part is a metal body, and the inner part is a channel for transmitting signals, interference can be grounded through the outer metal body, and signal lines transmitted in the middle cannot be influenced), and the interference is further reduced. Such as the test wire connectors 3 and the hollow cross bar 2 in the figure, the hollow cross bar 2 functions as a shield protecting the test wire connectors 3.

It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. The word "comprising", without further limitation, means that the element so defined is not excluded from the list of additional identical elements in a process, method, article, or apparatus that comprises the element.

The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

It will be understood that the present application is not limited to what has been described above and shown in the accompanying drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims (5)

1. An anti-interference supporting device for a zinc oxide arrester test is characterized by comprising a straight rod, a cross rod and a test wire connector;

the straight rod is hollow and provided with internal threads, the lower part of the outer wall of the straight rod is provided with a grounding bolt, the upper part of the outer wall of the straight rod is provided with a cross rod perpendicular to the straight rod, the cross rod is hollow and communicated with the straight rod, and the test wire joint is arranged at the end part of one end of the cross rod, which is far away from the straight rod;

at least the outer walls of the straight rod and the cross rod are made of metal.

2. The anti-interference supporting device for the zinc oxide arrester test according to claim 1, wherein the straight rod comprises an outer metal layer, an insulating layer and an inner metal layer in sequence from outside to inside;

the outer wall of the outer metal layer is provided with a grounding bolt which can be connected with a lightning arrester connector;

and an internal thread hole penetrates through the outer metal layer, the insulating layer and the inner metal layer, the internal thread hole is axially vertical to the straight rod, and the hole depth is equal to the thickness of the straight rod.

3. The anti-interference supporting device for the zinc oxide arrester test is characterized in that the internal threaded hole is a stepped hole, and the diameter of the hole in the outer metal layer is larger than that of the hole in the inner metal layer.

4. The anti-interference supporting device for the zinc oxide arrester test according to claim 2, wherein the cross bar comprises an outer metal layer, an insulating layer and an inner metal layer in sequence from outside to inside;

the inner metal layer is provided with an internal thread, and the internal thread of the inner metal layer is connected with the internal thread hole penetrating through the outer metal layer, the insulating layer and the inner metal layer through an external screw rod.

5. The anti-interference supporting device for the zinc oxide arrester test is characterized in that the test wire connector is a coaxial cable with a double-layer shielding structure or a coaxial cable and shielding rubber connector lug.

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