CN219475645U - Pipe nut fixing device in GIS equipment test - Google Patents

Abstract

The utility model belongs to the field of power equipment, and provides a pipe nut fixing device in a GIS equipment test, which is used for a high-voltage test of the power equipment and comprises the following components: the support frame is arranged in the pipe nut, wherein the support frame comprises a support rod and fixing plates respectively arranged at two ends of the support rod, one end of each fixing plate is connected with the support rod, and the other end of each fixing plate is connected with a transformer sleeve. According to the utility model, the support frame is arranged in the pipe nut, so that the step of installing the pipe nut is greatly simplified, the weight of the pipe nut is borne by the main body support device, and the whole weight of the device is borne by the transformer sleeves at the two ends, so that the pipe nut cannot drop downwards due to dead weight, the safety distance between the pipe nut and the ground and between the pipe nut and adjacent equipment after being electrified is ensured, the site safety risk is reduced, meanwhile, the pipe nut cannot swing greatly after encountering strong wind, the flashover or dumping accident is prevented, and the service life of the pipe nut is prolonged.

Description

Pipe nut fixing device in GIS equipment test

Technical Field

The utility model belongs to the technical field of power equipment, and particularly relates to a pipe nut fixing device in a GIS equipment test.

Background

The alternating current withstand voltage test is an important link of a 750kV gas insulated metal-enclosed switchgear (GIS) field handover test, and can check the installation process and quality of equipment and ensure that the equipment is safely and stably put into operation.

When an alternating-current withstand voltage test is carried out in a high-altitude area, corona is very serious in a test loop under high voltage, corona is reduced by using uniform electric field distribution of a pipe bus to achieve a better test effect, but the highest alternating-current withstand voltage test voltage of 750kV GIS equipment can reach 960kV, a pipe bus with a larger diameter and bulkiness is required to be used, great risk and challenge are brought to the erection and installation of the field test pipe bus, and a great amount of time is consumed for the erection and installation of the pipe bus.

Old-type pipe bus and novel pipe bus are mainly used in the process of erection and installation of pipe bus when alternating-current withstand voltage test of 750kV GIS equipment is carried out in the past, but two kinds of pipe bus have certain problems and risks in the use process: 1) Because old pipe parent hoist and mount many times in the in-process of repeated erection installation are demolishd, lead to producing more burrs even damaged serious, can't reach good anti-corona effect, when on-the-spot pressurization, often be difficult to accurate effective required voltage of reaching the experiment. And the old type pipe bus manufacturers are less and less purchased at present. 2) Compared with the old pipe bus, the novel pipe bus has the advantages that the quality of the aluminum foil material of the shell is improved to some extent, but the weight is larger and heavier, and great difficulty is brought to installation and erection. Test personnel need draw at the inside insulating rope that penetrates of pipe in the female in-process of erecting of pipe, but because novel pipe is female comparatively heavy and flexible inadequately sensitive, lead to test personnel need to make out great strength when the high altitude is installed and draw and just be difficult to fixed in sleeve pipe pile head department, probably cause the high altitude accident of falling, consequently brought higher high altitude construction risk. Meanwhile, due to the fact that the dead weight of the pipe nut is large, even after the sleeve pile head is reliably fixed, the suspended part of the pipe nut still drops downwards due to the large dead weight, so that the safety distance between the pipe nut and the ground and other adjacent equipment is reduced, flashover occurs, and a large challenge is brought to field safety risk management and control. And secondly, the test site is often in an open area, wind force is large during wind generation, a pipe bus is often caused to swing along with wind, the distance between the pipe bus and adjacent equipment is likely to be relatively short in the swinging process, the pipe bus is connected with the pressurizing equipment, and if strong wind is encountered, even the equipment is likely to topple under the swinging traction action of the pipe bus.

The utility model patent with publication number of CN 204243481U discloses a 1000kV high-resistance loop suspension pipe parent structure, which is characterized in that a pipe parent is suspended between a main framework and a secondary framework, and a high-voltage shunt reactor, a voltage transformer, a lightning arrester and GIS equipment are respectively and electrically connected with the pipe parent through down-conducting wires, so that the 1000kV high-resistance loop formed by the above element equipment forms a flexible connection structure, the direct connection of the pipe parent with high hardness is avoided, and the anti-seismic performance of the 1000kV high-resistance loop is improved. However, when the soft connection structure encounters strong wind, the pipe bus can swing along with the wind, and the problem that the pipe bus falls down due to dead weight is not solved.

Disclosure of Invention

First, the technical problem to be solved

The utility model aims to solve the technical problems of complex installation process, poor stability and low safety of the conventional pipe nut fixing device.

(II) technical scheme

In order to solve the above technical problems, an aspect of the present utility model provides a pipe nut fixing device in a GIS device test, for a high voltage test of an electrical device, including: a supporting frame arranged inside the pipe nut 7, wherein,

the support frame includes bracing piece 1 and locates respectively fixed plate 2 at bracing piece 1 both ends, fixed plate 2 one end with bracing piece 1 is connected, and the other end is connected with transformer sleeve 6.

According to a preferred embodiment of the present utility model, the support rod 1 is a telescopic metal rod, and stretches according to the length of the pipe nut.

According to a preferred embodiment of the present utility model, the support rod 1 is provided with a buckle, and is fixed by the buckle after being stretched to a preset length.

According to the preferred embodiment of the utility model, the supporting rod 1 is provided with a hanging point 3 which is fixedly connected with a hanging rope 4 of a crane, and the supporting frame moves along with the crane.

According to a preferred embodiment of the utility model, the fixing plate 2 is detachably connected with the transformer bushing 6 by bolts.

According to a preferred embodiment of the present utility model, the fixing plate 2 is connected to the support rod 1 by a braided ground wire.

According to the preferred embodiment of the utility model, the outer side of the fixed plate 2 is wrapped with tinfoil.

(III) beneficial effects

According to the utility model, the support frame is arranged in the pipe bus, so that the step of installing the pipe bus is greatly simplified, the weight of the pipe bus is borne by the main body support device, and the whole weight of the device is borne by the transformer bushings at two ends, so that the pipe bus cannot drop downwards due to dead weight, the safety distance between the pipe bus and the ground and between the pipe bus and adjacent equipment after the pipe bus is electrified is ensured, the site safety risk is reduced, meanwhile, the pipe bus cannot swing greatly after encountering strong wind, the flashover or dumping accident is prevented, and the service life of the pipe bus is prolonged; through crane fixed hoisting point moving installation, need not the test personnel to heavy female the pulling of pipe, can greatly reduce test personnel working strength, reduced the high altitude risk of falling of test personnel in the installation.

Drawings

FIG. 1 is a schematic view of a pipe nut fixing device in a GIS equipment test according to an embodiment of the present utility model;

fig. 2 is a schematic diagram illustrating movement of a parent pipe fixing device in a GIS device test according to an embodiment of the present utility model.

Reference numerals illustrate: 1. a support rod; 2. a fixing plate; 3. a hanging point; 4. a hanging rope; 5. tinfoil paper; 6. a transformer bushing; 7. a tube mother.

Detailed Description

In describing particular embodiments, specific details of construction, performance, effects, or other features are set forth in order to provide a thorough understanding of the embodiments by those skilled in the art. It is not excluded, however, that one skilled in the art may implement the present utility model in a particular situation in a solution that does not include the structures, properties, effects, or other characteristics described above.

The block diagrams in the figures generally represent functional entities and do not necessarily correspond to physically separate entities. That is, the functional entities may be implemented in one or more hardware modules or integrated circuits, or in different network and/or processing unit devices and/or microcontroller devices.

The same reference numerals in the drawings denote the same or similar elements, components or portions, and thus repeated descriptions of the same or similar elements, components or portions may be omitted hereinafter. It will be further understood that, although the terms first, second, third, etc. may be used herein to describe various devices, elements, components or portions, these devices, elements, components or portions should not be limited by these terms. That is, these phrases are merely intended to distinguish one from the other. For example, a first device may also be referred to as a second device without departing from the spirit of the utility model. Furthermore, the term "and/or," "and/or" is meant to include all combinations of any one or more of the items listed.

The present utility model will be further described in detail below with reference to specific embodiments and with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present utility model more apparent.

Fig. 1 is a schematic structural diagram of a female pipe fixing device in a GIS device test according to an embodiment of the present utility model.

As shown in fig. 1, the present utility model provides a pipe nut fixing device in a GIS device test, for a high voltage test of an electric power device, including: a supporting frame arranged inside the pipe nut 7, wherein,

the support frame includes bracing piece 1 and locates respectively fixed plate 2 at bracing piece 1 both ends, fixed plate 2 one end with bracing piece 1 is connected, and the other end is connected with transformer sleeve 6. The bracing piece 1 level sets up, is scalable metal pole, according to the length of managing female 7, can stretch out and draw back bracing piece 1 to with female 7 length the same of pipe, be equipped with a plurality of apertures on the bracing piece 1, after stretching out and draw back suitable length, utilize buckle and aperture fixed stay bar 1.

The bracing piece 1 both ends respectively are provided with a fixed plate 2, and the one end of fixed plate 2 is 90 degrees vertical settings with bracing piece 1, and the junction can be fixed through the articulated, also can use to weave ground wire flexible coupling, and the fixed plate 2 other end passes through the detachable connection of bolt with transformer sleeve 6 and fixes.

Fig. 2 is a schematic moving diagram of a pipe nut fixing device in a GIS device test according to an embodiment of the present utility model, as shown in fig. 2, as a preferred embodiment, two symmetrical hanging points 3 are provided at appropriate positions of the supporting rod 1, so that the installation is convenient. Before hoisting, the pipe nut 7 is sleeved into the supporting rod 1 on the ground, the pipe nut is tightened to be within the hoisting point 3 at the central position of the supporting rod 1, and after the hoisting rope 4 of the crane is fixedly connected with the lifting hook and the hoisting point 3, the balance of the supporting rod 1 is adjusted to ensure that the supporting frame is kept horizontal during hoisting.

When the support frame is lifted to the transformer sleeve 6, a tester transfers the support frame to the vicinity of the transformer sleeve 6 through the overhead working truck, one end fixing plate 2 of the support frame and the transformer sleeve 6 are screwed and fixed through bolts, then the support frame is transferred to the other end to adjust the length of the support rod 1 to the adjacent transformer sleeve 6 according to the actual length, and the fixing plate 2 at the other end of the support frame is connected and fixed with the transformer sleeve 6. At this time, the supporting frame is firmly fixed on the transformer bushing 6, the lifting rope 4 connected to the lifting point 3 is removed, and the pipe nut 7 is pulled to the transformer bushing 6 at the two sides towards the two ends and is connected and fixed.

Finally, the outer side of the tube nut fixed at the transformer sleeve 6 is wrapped with tinfoil 5 to prevent corona at the joint. The support frame can be quickly and conveniently removed by adopting the steps opposite to the installation sequence when the support frame is removed after the test is finished.

The support frame greatly simplifies the step of installing the pipe nut, reduces the labor intensity and the safety risk of personnel, provides improvement aiming at the defects of erection and installation compared with the prior pipe nut, and has stronger operability and convenience. The weight of the pipe bus is borne by the main body supporting device, and the whole weight of the device is borne by the transformer sleeves at the two ends, so that the pipe bus cannot drop downwards due to dead weight, the safety distance between the pipe bus and the ground and between the pipe bus and adjacent equipment after the pipe bus is electrified is ensured, the site safety risk is reduced, meanwhile, the pipe bus cannot swing greatly after encountering strong wind, flashover or dumping accidents are prevented, and the service life of the pipe bus is prolonged; through crane fixed hoisting point moving installation, need not the test personnel to heavy female the pulling of pipe, can greatly reduce test personnel working strength, reduced the high altitude risk of falling of test personnel in the installation.

The above-described specific embodiments further describe the objects, technical solutions and advantageous effects of the present utility model in detail, and it should be understood that the present utility model is not inherently related to any particular computer, virtual device or electronic apparatus, and various general-purpose devices may also implement the present utility model. The foregoing description of the embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (7)

1. Pipe nut fixing device in GIS equipment test for power equipment high voltage test, its characterized in that includes: a supporting frame arranged in the pipe nut (7), wherein,

the support frame comprises a support rod (1) and fixing plates (2) respectively arranged at two ends of the support rod (1), one end of each fixing plate (2) is connected with the support rod (1), and the other end of each fixing plate is connected with a transformer sleeve (6).

2. The pipe nut fixing device in the GIS equipment test according to claim 1, wherein the supporting rod (1) is a telescopic metal rod, and stretches according to the length of the pipe nut.

3. The tubular busbar fixing device in the GIS equipment test according to claim 2, wherein the supporting rod (1) is provided with a buckle, and the tubular busbar fixing device is fixed by the buckle after being stretched to a preset length.

4. The pipe nut fixing device in the GIS equipment test according to claim 1, wherein the supporting rod (1) is provided with a hanging point (3) which is fixedly connected with a hanging rope (4) of a crane, and the supporting frame moves along with the crane.

5. The tubular busbar fixing device in the GIS equipment test according to claim 1, wherein the fixing plate (2) is detachably connected with the transformer bushing (6) through bolts.

6. The tubular busbar fixing device in the GIS equipment test according to claim 1, wherein the fixing plate (2) is connected with the supporting rod (1) through a woven ground wire.

7. The tubular busbar fixing device in the GIS equipment test according to claim 1, wherein the outer side of the fixing plate (2) is wrapped with tinfoil paper (5).