CN201061115Y - 110kV-220kV XLPE cable GIS terminal - Google Patents

Abstract

A 110kV-220kV cross-linked cable GIS terminal is composed of epoxy sleeve, stress cone, metal electrode, IEC60859 interface electrode, cable conductor connection fittings, lower metal connection flange, spring mechanism and tail pipe. The cable GIS terminal is Dry structure, the connection surface of the IEC60859 interface electrode and the cable conductor connection fitting is in the form of a cone; the cable conductor connection fitting is fixed with a lock nut and a raised step; when the GIS terminal is a 220kV cross-linked cable GIS terminal, its metal electrode It consists of three parts: upper connecting electrode, shielding tube and lower shielding electrode. By adopting the utility model, the cable terminal can be arranged horizontally when in use, the installation is easier, and it is easy to grasp, which effectively reduces the harm caused by poor installation and improves the operation reliability. At the same time, the utility model prevents the locking position of the cable from moving up and down , can effectively save raw materials, reduce weight, and reduce the difficulty of installation technology and production process.

Description

110kV-220kV XLPE cable GIS terminal

technical field

The utility model refers to a high-voltage cross-linked polyethylene power cable GIS terminal, which is suitable for 110kV-220kV cross-linked cables.

Background technique

At present, most of the high-voltage GIS cable terminals used are in the form of internal oil-filled additional insulation. Please refer to the Chinese patent No. 200520045566.2 "220kV cross-linked cable outdoor terminal". When the traditional GIS cable terminal is overhauled, it must be deflated, and the use of medium insulating oil is considered. The phenomenon of thermal expansion and contraction leaves an air gap, so that the cable terminal cannot be arranged horizontally during use, which causes difficulties in use management, manufacturing, and on-site maintenance; in addition, the IEC60859 interface used by the GIS cable terminal adopts the method of plane contact and environmental protection. The upper electrode is pre-embedded in the oxygen sleeve for connection. If it is not installed properly, it will cause a large contact resistance.

Contents of the invention

The purpose of this utility model is to overcome the deficiencies of the prior art and design a cross-linked cable GIS terminal suitable for voltage levels of 110kV-220kV.

The specific solution of the utility model is a 110kV-220kV cross-linked cable GIS terminal, which consists of an epoxy sleeve 1, a stress cone 2, a metal electrode 3, an IEC60859 interface electrode 4, a cable conductor connecting fitting 5, and a lower metal connecting flange 6. It consists of a spring mechanism 7 and a tail pipe 8. The metal electrode 3 is pre-embedded in the epoxy sleeve 1. The cable conductor connection fitting 5 is installed in the metal electrode 3 and the IEC60859 interface electrode 4. It is characterized in that: the 110kV- The 220kV cross-linked cable GIS terminal is a dry structure, and the connection surface 9 of the IEC60859 interface electrode 4 and the cable conductor connection fitting 5 is in the form of a cone.

The above-mentioned 110kV-220kV cross-linked cable GIS terminal is characterized in that: a lock nut 10 is provided on the front end of the contact surface of the cable conductor 5 with the metal electrode 3; 11 steps up.

The above-mentioned 110kV-220kV cross-linked cable GIS terminal is characterized in that: when the GIS terminal is a 220kV cross-linked cable GIS terminal, the metal electrode 3 is composed of an upper electrode 12, a shielding tube 13 and a lower shielding electrode 14. The shielding tube 10 connects the upper electrode 12 and the lower shielding electrode 14 to make it an equipotential body.

By adopting the utility model, the cable terminal can be arranged horizontally when in use, the installation is easier, and it is easy to grasp, which effectively reduces the harm caused by poor installation and improves the operation reliability. At the same time, the utility model prevents the locking position of the cable from moving up and down , can effectively save raw materials, reduce weight, and reduce the difficulty of installation technology and production process.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Fig. 1 is the sectional view of 110kV XLPE cable GIS terminal of the utility model embodiment;

Fig. 2 is a cross-sectional view of a 220kV XLPE cable GIS terminal according to another embodiment of the present invention.

In the figure, 1 epoxy sleeve, 2 stress cone, 3 metal electrode, 4 IEC60859 interface electrode, 5 cable conductor connection fittings, 6 lower metal connection flange, 7 spring mechanism, 8 tail pipe, 9 connection surface, 10 lock nut, 11 raised steps, 12 upper electrode, 13 shielding tube, 14 lower shielding electrode.

Detailed ways

In Fig. 1, the 110kV XLPE cable GIS terminal consists of epoxy sleeve 1, stress cone 2, metal electrode 3, IEC60859 interface electrode 4, cable conductor connecting fitting 5, lower metal connecting flange 6, spring mechanism 7 and tail The metal electrode 3 is pre-embedded in the epoxy sleeve 1, and the connecting hardware 5 is installed in the metal electrode 3 and the IEC60859 interface electrode 4. This GIS cable terminal adopts a dry structure, so that the cable terminal can be arranged horizontally when in use. . The connection surface 9 between the IEC60859 interface electrode 4 and the cable conductor connection fitting 5 is in the form of a cone, which is directly connected to the cable conductor connection fitting to avoid poor connection; There is a locking nut 10 at the end; there is a raised step 11 at the rear end of the contact surface with the metal electrode 3, and the cable conductor connecting fitting 5 is fixed on the metal electrode 3 by using the locking nut 10 and a raised step 11, so that the locked position of the cable is not fixed. will move up and down. The metal electrode 3 not only plays a role of shielding but also has a role of connection and conduction.

In Figure 2, the 220kV XLPE cable GIS terminal is also composed of epoxy sleeve 1, stress cone 2, metal electrode 3, IEC60859 interface electrode 4, cable conductor connecting fitting 5, lower metal connecting flange 6, spring mechanism 7 and Composed of tail pipe 8, its structure and performance are basically the same as those of 110kV cross-linked cable GIS terminal. The special feature is that its metal electrode 3 is composed of upper electrode 12, shielding tube 13 and lower shielding electrode 14. It consists of shielding The tube 10 connects the upper electrode 12 and the lower shielding electrode 14 to form an equipotential body. Such an electrode structure can save raw materials, reduce weight, and reduce the difficulty of installation technology and production process.

In Fig. 1 and Fig. 2, when the IEC60859 interface electrode 4 is connected to the metal electrode 3, it can be connected by four bolts as shown in the figure, or it can be pre-fabricated into one body.

Claims (3)

1. A 110kV-220kV cross-linked cable GIS terminal, consisting of epoxy sleeve (1), stress cone (2), metal electrode (3), IEC60859 interface electrode (4), cable conductor connection fittings (5), lower Metal connecting flange (6), spring mechanism (7) and tailpipe (8), metal electrode (3) is pre-embedded in epoxy sleeve (1), and cable conductor connecting hardware (5) is installed on metal electrode ( 3) and the IEC60859 interface electrode (4), characterized in that it is a dry structure, and the connection surface (9) between the IEC60859 interface electrode (4) and the cable conductor connection fitting (5) is in the form of a tapered surface. 2. The 110kV-220kV XLPE cable GIS terminal as claimed in claim 1, characterized in that: a lock nut (10) is provided at the front end of the contact surface of the cable conductor connection fitting (5) with the metal electrode (3); There is a raised step (11) at the rear end of the contact surface with the metal electrode (3). 3. The 110kV-220kV cross-linked cable GIS terminal as claimed in claim 2, characterized in that: when the GIS terminal is a 220kV cross-linked cable GIS terminal, the metal electrode (3) consists of an upper electrode (12), a shield The tube (13) and the lower shielding electrode (14) are composed of three parts, and the upper electrode (12) and the lower shielding electrode (14) are connected by the shielding tube (10).

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