CN104143778B - Sleeve wire inlet/outlet device and connection barrel thereof - Google Patents

Abstract

The invention relates to a sleeve pipe inlet and outlet device and its connecting cylinder. The sleeve pipe inlet and outlet device includes a connection cylinder. Straight sleeves are coaxially installed on the three sleeve connection ports of the connection cylinder. Each straight sleeve is provided with a center Conductor, an insulator is installed on the insulator connection port of the connecting cylinder, and three-phase conductors are arranged on the insulator, and each phase conductor is electrically connected to the corresponding central conductor through its corresponding conductive rod, and the axes of the three bushing connection ports are located on the same plane , the extension directions of the axes of the three bushing connection ports obliquely intersect at the same point, and the included angles between the axes of two adjacent bushing connection ports are the same. The invention provides a connecting cylinder which can easily guarantee the included angle of the axes between the connecting ports of adjacent casings and a casing pipe inlet and outlet device using the connecting casing.

Description

Casing inlet and outlet device and its connecting barrel

technical field

The invention relates to a sleeve pipe inlet and outlet device and a connecting cylinder thereof.

Background technique

The bushing inlet and outlet device of the gas-insulated metal-enclosed switchgear (GIS equipment for short) in the power system is mainly used to lead out the main circuit conductor of the GIS equipment, and realize electrical connection with overhead lines, transformers, lightning arresters and other equipment, as SF6 gas and air The interface of the main circuit of the GIS equipment makes the transition from SF6 gas insulation to air insulation. The existing bushing inlet and outlet devices, such as "a three-phase common box type voltage transformer test device" disclosed in Chinese patent CN201311462, include a connecting cylinder, and the connecting cylinder is provided with an insulator connection port for insulator installation and three respectively. The bushing connection ports installed corresponding to the bushings of each phase are coaxially installed with straight bushings on each bushing connection port, and the three straight bushings are distributed in a pyramid shape, that is, the axes of the three straight bushings are not on the same plane Above, each straight bushing is provided with a central conductor, and the insulator is fixed with three-phase conductors, and each phase conductor is electrically connected to the corresponding central conductor through its corresponding conductive rod. The problem with the existing casing inlet and outlet device is that the three straight casings distributed in a pyramid shape occupy a large three-dimensional space, which is not conducive to use in some occasions that require space. It is convenient for transportation, and each straight bushing must be assembled with the connecting cylinder on site. Sometimes the construction environment on site is harsh, so the efficiency of assembly is not high; in addition, the spatial distribution structure of the three straight bushings requires the corresponding The three ports should also be in a corresponding distribution structure, which increases the difficulty of making the connecting cylinder, the angle between the axes of the adjacent casing connecting ports is difficult to ensure, and the forming rate of the connecting cylinder is very low, thereby increasing the production cost. In addition, the three straight bushings are all inclined outwards, and each straight bushing will generate an external component force on the connecting cylinder, and due to the heavy weight of the bushing, it is required that the connecting cylinder must have enough The structural strength of the casing needs to be sufficient, which requires ensuring that the connecting cylinder has a sufficient size, which further increases the size and manufacturing cost of the casing inlet and outlet device.

Contents of the invention

The object of the present invention is to provide a connecting cylinder which can easily guarantee the included angle of the axes between the connecting ports of adjacent sleeves;

In order to solve the above problems, the technical solution of the connecting cylinder in the present invention is:

The connecting cylinder of the sleeve inlet and outlet device includes a cylinder body with three sleeve connection ports, the axes of the three sleeve connection ports are on the same plane, and the extension directions of the axes of the three sleeve connection ports are obliquely intersecting the same plane. One point, the included angles between the axes of two adjacent bushing connection ports are the same.

The included angle between the axes of the two adjacent bushing connection ports is 45 degrees.

The connection port of the insulator on the barrel is coaxially arranged with the connection port of the bushing in the middle position.

The technical scheme of the sleeve pipe inlet and outlet device in the present invention is:

The bushing inlet and outlet device includes a connecting cylinder. Straight bushings are coaxially installed on the three bushing connection ports of the connecting barrel. A central conductor is arranged in each straight bushing, and an insulator is installed on the insulator connection port of the connecting barrel. The insulator is provided with three-phase conductors, and each phase conductor is electrically connected to the corresponding center conductor through its corresponding conductive rod. The axes of the three bushing connection ports are located on the same plane, and the axis extension directions of the three bushing connection ports are inclined. Intersect at the same point, and the included angles between the axes of two adjacent bushing connection ports are the same.

The included angle between the axes of the two adjacent bushing connection ports is 45 degrees.

The axis of the straight sleeve in the middle position extends along the up and down direction.

Each conductive rod includes a rod body and a conductive sleeve arranged on the upper end of the rod body for conductive insertion of the corresponding central conductor. Spring contact fingers are arranged between each conductive sleeve and the corresponding central conductor.

The connecting port of the insulator is set coaxially with the connecting port of the bushing in the middle position, the insulator is set coaxially with the connecting port of the insulator, and the phase conductors of the three-phase conductors are respectively in the three phases of an equilateral triangle. At the vertices, the insulator is arranged concentrically with the circumscribed circle of the equilateral triangle.

The beneficial effects of the present invention are: the axes of the three sleeve connection ports in the present invention are located on the same plane, which means that the axes of the three straight sleeves are located on the same plane. In actual use, the three sleeves It does not take up a large space, so that the bushing inlet and outlet device can be used in some workplaces with limited space; in addition, since the axes of the three bushing connection ports are on the same plane, this makes the relative The included angle of the axis between the connecting ports of the adjacent sleeve pipes is easy to ensure, the connecting cylinder is easy to manufacture, the forming rate of the connecting cylinder is high, and the manufacturing cost of the connecting cylinder is reduced.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the sleeve pipe inlet and outlet device in the present invention, and is also a diagram of the use state of an embodiment of the connecting cylinder in the present invention;

Fig. 2 is the A-A direction sectional view of Fig. 1;

Fig. 3 is a sectional view along the line B-B of Fig. 2 .

detailed description

The embodiment of the bushing inlet and outlet device is shown in Figures 1-3: it includes a connecting cylinder 4, which is an aluminum alloy casting. The axes of the two casing connection ports are located on the same plane, the extension directions of the axes of the three casing connection ports are inclined compared with the same point, and the axis angles between the two adjacent casing connection ports are all 45 degrees, in the middle The axis of the bushing connection port at the first position extends along the up and down direction, and the insulator connection port is coaxially arranged with the bushing connection port at the middle position. Straight bushings 7 are installed coaxially on each bushing connection port, and a central conductor 6 is arranged in each straight bushing. Insulator 1 is installed on the coaxial line at the insulator connection port, and a three-phase conductor 8 is arranged on the insulator. The phase conductors in the conductors are respectively located at the three vertices of the equilateral triangle, the insulators are arranged concentrically with the circumcircle of the equilateral triangle, and the phase conductors in the three-phase conductors are electrically connected to the corresponding center conductors through their respective conductive rods 2 . Each conductive rod includes a rod body and a conductive sleeve 10 provided on the upper end of the rod body for the conductive insertion of the corresponding central conductor. A spring contact finger 11 is arranged between each conductive sleeve and the corresponding central conductor. The lower end of each conductive rod passes through the bolt 9 and The corresponding phase conductors are fixedly connected electrically. Item 5 in the figure represents the shielding sleeve.

In the present invention, the axes of the connection ports of the sleeves are located on the same plane, so that the axes of the straight sleeves are all located on the same plane, and the three straight sleeves are positioned as the left, middle and right sleeves respectively. Then after the assembly is completed, each The straight bushing will not occupy the space in the front and rear directions, so that the bushing inlet and outlet device can be used in occasions that require space in the front and rear directions. At the same time, the three bushings are on the same plane, which is also convenient for transportation. , the casing can be assembled on the connecting barrel in the factory, and then transported to the installation site for direct installation, which overcomes the impact of the harsh construction environment on the installation site, and does not need to send special personnel to the site for installation, which greatly reduces the construction cost ; The axis of the middle casing is set along the up and down direction, the middle casing will not generate external force on the connecting cylinder, and the connecting cylinder only needs to bear the external force of the left and right casing, which reduces the demand for the structural strength of the connecting cylinder and reduces the The production cost of the connecting cylinder is reduced; the axes of the connecting ports of each casing are located on the same plane, and the angle between the axes between the connecting ports of two adjacent casings is easy to ensure. The making of the connecting cylinder is simple and convenient, and the forming rate is high. The production cost of the connecting cylinder is reduced; the three-phase conductors are respectively located at the three apexes of the equilateral triangle, and the insulator is arranged concentrically with the circumcircle of the equilateral triangle, and the insulator is arranged on the same axis as the middle sleeve, which ensures that each conductive rod insulation distance between them.

In other embodiments of the bushing inlet and outlet device: the angle between the axes between two adjacent bushing connection ports can also be other angles, such as 50 degrees, 60 degrees, etc.; The sleeve is arranged on the same axis; the conductors of each phase can also be located at the three vertices of the isosceles triangle or the three vertices of the ordinary triangle; each conductive rod can also be electrically connected to the corresponding center through bolts; the axis of the middle casing It is also possible not to extend along the up-down direction, for example, to be inclined at a certain angle with the up-down direction.

The embodiment of the connecting barrel of the bushing inlet and outlet device is shown in Figures 1 to 3: the specific structure of the connecting barrel is the same as the connecting barrel described in the above-mentioned embodiments of the bushing inlet and outlet device, and will not be described in detail here.

Claims (4)

1. The bushing inlet and outlet device includes a connecting cylinder. Straight bushings are installed coaxially on the three casing connection ports of the connecting cylinder. A central conductor is installed in each straight bushing, and an insulator connection port is installed on the connecting cylinder. The insulator is provided with three-phase conductors, and each phase conductor is electrically connected to the corresponding central conductor through its corresponding conductive rod. The axial extension directions of the openings are obliquely intersected at the same point, and the included angles between the axes of two adjacent bushing connection ports are the same; The connecting port of the insulator is coaxially arranged, each phase conductor of the three-phase conductors is respectively located at three vertices of an equilateral triangle, and the insulator is arranged concentrically with a circumscribed circle of the equilateral triangle. 2 . The bushing cable inlet and outlet device according to claim 1 , wherein the angle between the axes between the two adjacent bushing connection ports is 45 degrees. 3 . 3 . The bushing inlet and outlet device according to claim 1 , wherein the axis of the straight bushing in the middle position extends along the vertical direction. 4 . 4. The bushing inlet and outlet device according to claim 1, characterized in that: each conductive rod includes a rod body and a conductive sleeve provided on the upper end of the rod body for the conductive insertion of the corresponding central conductor, and each conductive sleeve is connected to the corresponding central conductor. There are spring contacts between them.