Expansion device for tap changer
A tap-changer and expansion technology, which is applied to the structural association of electrical components, transformers, electrical components, etc., can solve the problems of difficult measurement, difficult to guarantee reliability, multiple errors in internal positioning, etc., to achieve green color, straight and concise appearance. Effect
Active Publication Date: 2016-09-28
任宏宇
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] (1) The end of the fastening screw is exposed on the outer surface of the insulating tube, and is covered and blocked by the insulating cap. The insulation effect is not ideal, and leakage is often caused due to operation negligence, which reduces the performance index of the tap changer, and the reliability is difficult to guarantee;
[0004] (2) There are dozens of protruding insulating caps on the outer surface of the insulating tube. It seems that the tap changer is distributed with many bumps, which is very inelegant, affects the appearance, and also makes the outer diameter of the tap changer thicker;
[0005] (3) The installation of the fixed contact, the external operation is difficult to measure, and the internal positioning has many errors
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0028] Embodiments of the present invention are further described below in conjunction with the accompanying drawings:
[0029] Examples of the present invention are figure 2 As shown, it is a three-phase non-excitation "expansion device of tap changer" with six taps and five gears with single bridge bridge connection voltage regulation method, rated voltage 110KV, and rated current 1000A. The specific components of each phase include: Serial number 1: 2 support rings, serial number 2: 6 fixed contacts, serial number 3: 1 insulating tube, outer diameter Φ175mm, serial number 4: expansion screw M14 12 pieces, serial number 5: 12 pins, serial number 6: insulating plug There are 12 in total, and the actual structure of each phase is that six square notches are prepared at equal intervals on the outer edges of the two No. 1 support rings, and square notches are also made at both ends of the six No. The center line of the square plane perpendicular to the notch is the central axi...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The present invention "Expansion Device for Tap-Changer" introduces an innovative installation method for the fixed contacts of transformer tap-changers in the field of power transmission and transformation. Each fixed contact is expanded and fixed in the inner cavity of the insulating tube, which replaces the At present, in the industry, the outer surface of the insulating tube is still penetrated with bolts to fix each fixed contact on the circumference of the inner wall. The beneficial effects are as follows: 1. There is no metal component outside the insulating tube, and the electrical performance index has reliability guarantee; 2. There is no insulating cap protrusion on the surface of the tap changer, which is smooth and round, with a green color, and the lead wire is like a spring bamboo branch, and the appearance is tall and straight. ;3. The fixed contacts and the supporting ring form a frame installation, which can be installed outside and installed inside, so that they are arranged neatly and the overall layout is rigorous.
Description
technical field [0001] The invention relates to the installation method of the fixed contacts of the transformer tap changer in the field of power transmission and transformation. Specifically, each fixed contact is expanded and fixed in the inner cavity of the insulating tube, which is the housing of the tap changer. Background technique [0002] At present, in the transformer tap changer industry, most manufacturers still adopt the mode of fixing the fixed contacts around the inner wall of the tap changer through holes on the outer surface of the insulating tube of the tap changer, such as figure 1 Shown: It includes: fixed contacts, insulating tubes, support rings, fastening screws, and insulating caps; its shortcomings include the following three points: [0003] (1) The end of the fastening screw is exposed on the outer surface of the insulating tube, and is covered and blocked by the insulating cap. The insulation effect is not ideal, and leakage is often caused due to...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H01H1/56H01F29/04H01F27/40
Inventor 任宏宇张剑李楠
Owner 任宏宇