CN112024723A

CN112024723A - GIL small-angle shell bending device

Info

Publication number: CN112024723A
Application number: CN202010852178.4A
Authority: CN
Inventors: 邓小冬; 李长江
Original assignee: Jiangsu Henggao Electric Manufacturing Co ltd
Current assignee: Jiangsu Henggao Electric Manufacturing Co ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2020-12-04

Abstract

The invention relates to the technical field of electrical manufacturing, in particular to a GIL small-angle shell bending device which comprises an oil press and a GIL shell, wherein a first outer die and a second outer die of the GIL shell to be bent and a first inner die, a second inner die and a third inner die which are sequentially arranged in an inner cavity of the GIL shell are fixedly installed on a platform of the oil press below the oil press, the second outer die is fixedly installed at the bottom end of a vertical oil pressure rod above the oil press, the three outer dies correspond to the three inner dies in position up and down in a one-to-one manner, the second outer die is a movable inner die, the GIL shell is subjected to plastic deformation by applying pressure through the oil press, and the deformation angle of the GIL shell under the pressure applied by the oil press is any angle within the range of 178.6-179.9 degrees.

Description

GIL small-angle shell bending device

Technical Field

The invention relates to the technical field of electrical manufacturing, in particular to a GIL small-angle shell bending device.

Background

In the prior art, the GIL small-angle shell is bent, the small-angle units are independently made into a butt joint shell, the small-angle shell is butted to other unit shells through bolts, the bending angle is controlled by adopting a welding process, and meanwhile, flanges, welding seams, conducting rods and male and female contacts are required to be used when the prior art is bent, so that the bending cost is increased, and the risk of SF6 leakage exists.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a GIL small-angle shell bending device.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a GIL low-angle casing bending apparatus, includes hydraulic press and GIL casing, the installation is fixed with on the below hydraulic press platform of hydraulic press treat first external mold and the third external mold and the GIL casing of crooked GIL casing, the inner wall of GIL casing inner chamber has set gradually first centre form, second centre form and third centre form, and the bottom installation of the vertical oil pressure pole in hydraulic press top is fixed with the second external mold, and the second external mold is for removing the centre form, exerts pressure through the hydraulic press and makes the GIL casing take place plastic deformation.

Preferably, the angle at which the GIL housing deforms under pressure applied by the oil press is any angle in the range 178.6 ° to 179.9 °.

Preferably, the first outer die is located right below the first inner die.

Preferably, the second outer mold is located directly above the second inner mold.

Preferably, the third outer die is located right below the third inner die.

The invention has the beneficial effects that:

the invention provides the simple and easy-to-operate bending device for the GIL small-angle shell, the small-angle shell is bent and molded in a cold bending mode, one-step molding is realized, the tooling efficiency is improved, small-angle transition of the bent section of the GIL shell is realized, the cost is reduced, and the risk of SF6 leakage is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a GIL small-angle housing bending apparatus according to the present invention.

In the figure: 1 oil press, 2 GIL shell, 11 first inner die, 12 first outer die, 21 second inner die, 22 second outer die, 31 third inner die and 32 third outer die.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1, a GIL small-angle housing bending device comprises an oil press 1 and a GIL housing 2, wherein a first outer die 12 and a third outer die 32 of the GIL housing to be bent and the GIL housing 2 are fixedly mounted on an oil press platform below the oil press 1, a first inner die 11, a second inner die 21 and a third inner die 31 are sequentially arranged on the inner wall of an inner cavity of the GIL housing 2, a second outer die 22 is fixedly mounted at the bottom end of an oil pressure rod vertical to the upper side of the oil press 1, the second outer die 22 is a movable inner die, and the GIL housing 2 is plastically deformed by applying pressure through the oil press 1;

the first outer die 12 is positioned right below the first inner die 11, the second outer die 22 is positioned right above the second inner die 21, the third outer die 32 is positioned right below the third inner die 31, and the three outer dies and the three inner dies are in one-to-one correspondence in position up and down;

the angle at which the GIL housing 2 deforms under pressure applied by the oil press 1 is any angle in the range 178.6 ° to 179.9 °.

In this embodiment, when the GIL small-angle housing bending device is used, an operator firstly fixes the first outer mold 12 and the third outer mold 32 on the platform of the oil press, transmits the GIL housing to the oil press through the hydraulic platform, installs the GIL housing on the first outer mold 12 on the platform of the oil press, installs a center of the oil press with the second outer mold 22 on the third outer mold 32 at a position 800mm away from the leftmost end of the housing, and clings the second outer mold 22 to the GIL housing 2;

the oil press applies pressure to the GIL housing 2, gradually to 8MPa and releases the pressure, moves the position of the middle inner die 2 within the range of 1200mm, then applies pressure, gradually to 8MPa and releases the pressure, and then moves the position of the middle second inner die 21 within the range of 1200mm, then applies pressure, gradually to 8MPa, until the housing is bent at a small angle, the bending angle is 178.6-179.9 degrees, and any angle can be realized within the range;

this GIL low-angle casing bending apparatus easy operation adopts the clod wash mode with low-angle casing bending, realizes one shot forming, has improved frock efficiency, has realized the crooked section low-angle transition of GIL casing, and the cost is reduced has reduced the risk that SF6 leaked.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a GIL low-angle shell bending device, includes hydraulic press (1) and GIL casing (2), its characterized in that, the installation is fixed with on the below hydraulic press platform of hydraulic press (1) treat first external mold (12) and third external mold (32) and the GIL casing (2) of crooked GIL casing, the inner wall of GIL casing (2) inner chamber has set gradually first centre form (11), second centre form (21) and third centre form (31), the bottom installation of the vertical oil pressure pole in hydraulic press (1) top is fixed with second external mold (22), and second external mold (22) are for removing the centre form, exert pressure through hydraulic press (1) and make GIL casing (2) take place plastic deformation.

2. A GIL small angle housing bending device according to claim 1, wherein the angle of deformation of the GIL housing (2) under the pressure exerted by the oil press (1) is any angle in the range of 178.6 ° -179.9 °.

3. A GIL small angle housing bending device according to claim 1, wherein the first outer die (12) is located directly below the first inner die (11).

4. A GIL small angle housing bending device according to claim 1, wherein the second outer die (22) is located directly above the second inner die (21).

5. A GIL small angle housing bending device according to claim 1, wherein the third outer die (32) is located directly below the third inner die (31).