CN104577908A - Easily-detachable fixed armor clamp for indoor rectangular bus - Google Patents

Abstract

An easily detachable indoor rectangular busbar fixing fitting. It includes two fixing components, two spheres, fixing main body, screws and two springs; the fixing main body is in the shape of a rectangular plate, and the middle parts of both sides are respectively indented to form a rectangular parallelepiped slot, and the bottom surface of the slot is sunken downwards A spring setting hole is formed, and the middle part of the bottom surface of the fixing body is equipped with a screw; each spring setting hole is provided with a spring, and the upper port of each spring setting hole is provided with a sphere, and the lower end of the sphere is connected with the upper end of the spring; The fixing member is composed of an upper plate, a lower plate, and a vertical plate whose upper and lower ends are respectively connected to the end of the same side of the upper plate and the lower plate, wherein the outer end of the lower plate can be inserted into the slot on the fixed main body, and the bottom surface of the lower plate A hemispherical groove is formed. The effect of the present invention is that the disassembly and installation are simple and convenient, the structure is simple, the labor intensity is low during replacement, the work efficiency is high, and the labor cost per unit time is reduced.

Description

Easy-to-detachable indoor rectangular busbar fixing fittings

technical field

The invention belongs to the technical field of devices for power systems, and in particular relates to an easily detachable indoor rectangular busbar fixing hardware.

Background technique

At present, in the power system, discharge accidents such as flashover, short circuit, and breakdown often occur in high-voltage equipment, and the frequency of the above-mentioned accidents in the busbar barrel or busbar room is relatively high. The content of suspended components is quite different from the previous ones (such as salt spray and other suspended substances with more complex components), and it is also related to factors such as small insulation distances. Therefore, the current indoor rectangular busbars are often fixed with fixing fittings. Figure 1 is a side view of the structure of a commonly used indoor rectangular busbar fixing hardware. As shown in Figure 1, this indoor rectangular busbar fixing fitting includes a lower plate 10, an upper plate 11, a connecting screw 12 and two fixing screws 13; the lower plate 10 is an oval aluminum plate, and a fixing screw is formed at both ends Through holes; connecting screws 12 are fixed in the middle of the lower plate 10 for connecting insulators; the upper plate 11 is also an aluminum plate, located above the lower plate 10, with ribs on the top, and two ends are respectively formed with one fixed to the two ends of the lower plate 10 The fixing screw through holes corresponding to the screw through holes; the two fixing screws 13 are respectively fixed in the two fixing screw through holes on the same side on the lower plate 10 and the upper plate 11, thus will be located between the lower plate 10 and the upper plate 11 The indoor rectangular busbar 14 between them is fixed. However, this indoor rectangular busbar fixing fitting has the following problems:

1) As mentioned above, both the lower plate 10 and the upper plate 11 of this indoor rectangular busbar fixing fitting are made of aluminum. Due to the low mechanical strength and poor flexibility of this material, it is often used during the actual installation operation. There will be a situation where the lower plate 10 and the upper plate 11 are broken;

2) This kind of indoor rectangular busbar fixing fittings is generally processed by cast aluminum hot-dip galvanizing process. Because the process is relatively backward, and the manufacturer is in the need of cost control, the process is not strictly controlled, so it is inevitable that the surface of the fixing fittings There are a large number of defects such as sharp corners and burrs, and these defects will bring great hidden dangers to the safe operation of the equipment in the high-voltage electric field;

3) In order to fix and clamp the indoor rectangular bus bar 14, it is necessary to install fixing screws 13 at both ends of the lower plate 10 and the upper plate 11, and at the same time, in order to meet the corresponding mechanical strength and screw installation size requirements, the lower plate 10 needs to be enlarged and the length of the upper plate 11, thereby increasing the interphase distance L, interphase distance L=(L1-L2)×2, the actual measurement shows that the interphase distance L is about 40-50mm, which means that the indoor rectangular busbar The air insulation distance between 14 is reduced by 40-50mm, so it is conceivable how much the discharge initiation voltage is reduced;

4) When the high-voltage equipment is actually used, the number of layers of the indoor rectangular busbar 14 needs to be increased or decreased due to changes in load or current carrying capacity. In this case, it is necessary to replace the indoor rectangular busbar fixing fittings of different specifications. It will lead to an increase in material costs, increase the labor intensity of maintenance personnel, and increase the power outage time, thereby reducing electricity sales, which in turn affects the benefits of the power company.

Contents of the invention

In order to solve the above problems, the object of the present invention is to provide an easily detachable indoor rectangular busbar fixing hardware.

In order to achieve the above-mentioned purpose, the easy-to-detachable indoor rectangular busbar fixing fitting provided by the present invention includes two fixing members, two spheres, a fixing body, screws and two springs; A rectangular parallelepiped slot is formed in the inner depression, and a spring setting hole is formed in a downward depression on the bottom surface of the slot, and a screw is installed in the middle of the bottom surface of the fixing body, and the lower end of the screw is used to connect the insulator; each spring setting hole A spring is provided, and a sphere is provided at the upper port of each spring setting hole, and the lower end of the sphere is connected with the upper end of the spring; The outer end of the lower plate can be inserted into the slot on the fixed body, and a hemispherical groove is formed on the bottom surface of the lower plate.

The length of the upper plate of the fixing member is greater than that of the lower plate, and the upper plate, the lower plate and the vertical plate are integrally formed.

The fixing member can be divided into various specifications according to the height of the vertical plate.

Each part of the easy-to-detachable indoor rectangular busbar fixing hardware is made of copper, and the corners are all rounded.

The advantages and effects of the easily detachable indoor rectangular busbar fixing fittings provided by the present invention are as follows:

1) The material used for each component is the same as that of the copper indoor rectangular busbar. Since the ductility and flexibility of copper are relatively higher than that of aluminum, there will be no problems such as fracture;

2) The places where sharp corners or burrs may occur on all parts are rounded, and the hot-dip galvanizing process is not used, so the adverse effects of sharp corners or burrs on the safe operation of high-voltage equipment can be minimized ;

3) After the material used for the components is changed to copper, the overall size of the fixing and supporting structures can be reduced and lowered. According to the actual measurement, the actual size of the phase-to-phase distance L is about 8-10mm, compared with the traditional indoor rectangular busbar fixing fittings The air insulation distance is increased by 80%, which can improve the discharge initiation voltage.

4) The disassembly and installation are simple and convenient, the structure is simple, the labor intensity during replacement is low, the work efficiency is high, and the labor cost per unit time is reduced.

Description of drawings

Figure 1 is a side view of the structure of a commonly used indoor rectangular busbar fixing hardware.

Fig. 2 is a side view of an exploded state of a partial structure of the easily detachable indoor rectangular busbar fixing hardware provided by the present invention.

Fig. 3 is a top view of the detachable indoor rectangular bus bar fixing fitting provided by the present invention in an exploded state.

Fig. 4 is a side view of the easily detachable indoor rectangular busbar fixing hardware provided by the present invention.

Detailed ways

The easily detachable indoor rectangular busbar fixing hardware provided by the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. The same reference numerals are used for the same components as in the prior art.

As shown in Figure 2-Figure 4, the easy-to-detachable indoor rectangular bus bar fixing hardware provided by the present invention includes two fixing members 1, two spheres 2, fixing main body 3, screws 4 and two springs 5; wherein the fixing main body 3 It is in the shape of a rectangular plate, with a rectangular parallelepiped slot 7 formed in the middle of both sides, and a spring setting hole 8 is formed on the bottom of the slot 7, and a screw 4 is installed in the middle of the bottom of the fixed body 3 , the lower end of the screw 4 is used to connect the insulator; each spring setting hole 8 is provided with a spring 5, and the upper port of each spring setting hole 8 is provided with a sphere 2, and the lower end of the sphere 2 is connected with the upper end of the spring 5; The fixing member 1 is composed of an upper plate, a lower plate, and a vertical plate whose upper and lower ends are respectively connected to the end of the same side of the upper plate and the lower plate, wherein the outer end of the lower plate can be inserted into the slot 7 on the fixed main body 3, and the lower plate A hemispherical groove 6 is formed on the bottom surface.

The length of the upper plate of the fixing member 1 is greater than that of the lower plate, and the upper plate, the lower plate and the vertical plate are integrally formed.

The fixing member 1 can be divided into various specifications according to the height of the vertical plate.

Each part of the easy-to-detachable indoor rectangular busbar fixing hardware is made of copper, and the corners are all rounded.

Now, the method of using the easy-to-detachable indoor rectangular busbar fixing fittings provided by the present invention is described as follows: When it is necessary to fix the indoor rectangular busbar 14, first connect the fixing body 3 to the insulator through the screw 4, and then connect at least one layer of the indoor rectangular busbar to the insulator. 14 is placed on the surface of the fixed main body 3, and then according to the total height of the indoor rectangular busbar 14, a fixed member 1 of suitable specifications is selected, and then the outer end of the lower plate of a fixed member 1 is inserted inwardly into a slot on the fixed main body 3 7, when the lower plate is just inserted, the bottom surface of the front end of the lower plate will press down on the sphere 2 and the spring 5, and when the hemispherical groove 6 reaches the position of the sphere 2, the spring 5 will recover by elastic force, thereby tightening the sphere 2 Tightly clamped in the hemispherical groove 6, at this moment the upper plate can firmly fix the indoor rectangular busbar 14 on the fixed main body 3. When it is necessary to increase or decrease the number of layers of the indoor rectangular busbar 14, it is only necessary to remove the original fixing member 1 and then replace it with a suitable fixing member 1, and the operation method is the same as before.

Claims (4)

1. An easy-to-detachable indoor rectangular busbar fixing fitting is characterized in that it includes two fixing components (1), two spheres (2), fixing main body (3), screws (4) and two springs ( 5); wherein the fixed main body (3) is in the shape of a rectangular plate, and the middle parts of both sides are respectively inwardly recessed to form a cuboid-shaped slot (7), and the bottom surface of the slot (7) is recessed downward to form a spring setting hole (8), while the middle part of the bottom surface of the fixed main body (3) is equipped with a screw (4), the lower end of the screw (4) is used to connect the insulator; each spring setting hole (8) is provided with a spring (5), and each The upper port of the spring setting hole (8) is provided with a sphere (2), and the lower end of the sphere (2) is connected with the upper end of the spring (5); The upper plate and the lower plate are composed of a vertical plate at the end of the same side, wherein the outer end of the lower plate can be inserted into the slot (7) on the fixed body (3), and a hemispherical groove is formed on the bottom surface of the lower plate ( 6). 2. The easy-to-detachable indoor rectangular busbar fixing fitting according to claim 1, characterized in that: the length of the upper plate of the fixing member (1) is greater than the length of the lower plate, and the upper plate, the lower plate and the vertical plate are integrated form. 3. The easy-to-detachable indoor rectangular busbar fixing fitting according to claim 1, characterized in that: the fixing member (1) can be divided into various specifications according to the height of the vertical plate. 4. The easy-to-detachable indoor rectangular bus-bar fixing fitting according to claim 1, characterized in that: each part of the easily-detachable indoor rectangular bus-bar fixing fitting is made of copper, and the corners are all round horn.