Novel high-voltage fuse and preparation method thereof
A high-voltage fuse, a new type of technology, applied in fuse manufacturing, electrical components, circuits, etc., can solve the problems of difficult control of electrical contact parts, explosion, affecting the work process, etc., to achieve simple and reliable switching operation, improve operation and maintenance efficiency, The effect of reducing operation and maintenance costs
Pending Publication Date: 2020-12-11
滕月升
View PDF0 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The inventor found that the existing drop-out fuses have many serious defects that affect the safe operation of the equipment, such as: exposed contacts, low insulation level, certain dangers in pulling and closing operations, poor contact and easy heating of contacts, etc.; In actual operation, due to the existence of many insurmountable defects in drop-out fuses, serious safety problems such as line short-circuit tripping, skipping trips, equipment damage and even personal casualties frequently occur; existing drop-out fuses have the following problems:
[0005] (1) Due to the rough product process and manufacturing quality, the contact spring is not elastic enough, resulting in poor contact of the contact and spark overheating
[0006] (2) The inflexibility of the rotation axis of the melting tube makes the angle of the melting tube fail to meet the requirements of the regulations, especially the size of most of the equipped melting tubes does not meet the requirements of the regulations. The fusion tube cannot fall quickly, and the arc cannot be cut off and extinguished in time, causing the fusion tube to burn or explode; the size of the fusion tube is short, it is difficult to close, the contacts are in poor contact, and electric sparks are generated. In actual operation, the fuse is closed many times due to the drop Failure will affect the work process and easily cause equipment damage or personal injury or death
The upper limit of the interrupting capacity of the 200A drop-out fuse is 200MVA, and the lower limit is 20MVA. According to its interrupting capacity, it can be seen that the arc cannot be extinguished in time after the melt is blown during a short-circuit fault, which may easily cause the fuse tube to burn or explode.
[0008] (4) The size of the fuse tube of the new switch does not match the size of the fixed contact part of the fuse. And it is difficult to guarantee the power supply reliability index
[0009] Due to the existence of the above-mentioned defects in the existing drop-out fuses, it not only increases the workload of maintenance personnel, but also promotes improper use by maintenance personnel, and completely loses the proper protection function of drop-out fuses. It can expand the scope of power outage, leapfrog to the main circuit breaker of the 10kV outgoing line of the substation, and cause the power outage of the whole line
[0010] Although the closed injection fuse has been improved in terms of insulation and other aspects, there are still some defects, such as: the electrical fracture is inside the fuse, which cannot form a clear disconnection point of the line, and the internal electrical contact position is not easy to control, resulting in Defects such as large resistance, burning equipment, and porcelain parts that are easy to explode and hurt people make it difficult to market, cannot be widely used, and cannot completely replace drop-out fuses
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 1
[0034]Such asfigure 1 As shown, this embodiment provides a new type of high-voltage fuse, including: a first insulating post 1 and a second insulating post 2;
[0035]One end of the first insulating column 1 is provided with a first static contact and a moving contact connected to the first static contact, and an ejection member 3 and a fuse tube 4 are provided inside the first insulating column 1. The ejection member 3 Connect the first static contact and the fuse tube 4 respectively;
[0036]The fuse tube 4 includes a fuse cap, an elastic mechanism, and a fuse 8 which are connected in sequence, and the fuse 8 can be blown so that the elastic mechanism pushes the fuse cap and the ejector 3 in turn, so that the first static contact and the movable Contact separation
[0037]One end of the second insulating column 2 is provided with a second static contact, the second static contact is movably connected to the conductive rod 16, and the other end of the conductive rod 16 is connected to a mov...
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 invention discloses a novel high-voltage fuse and a preparation method thereof. The fuse comprises: one end of a first insulating column is provided with a first static contact and a moving contact connected with the first static contact, the interior of the first insulating column is provided with a pop-up part and a fuse tube, and the pop-up part is connected with the first static contact and the fuse tube; the fuse tube comprises a fuse cap, an elastic mechanism and a fuse wire which are connected in sequence, and the fuse wire is fused to enable the elastic mechanism to push the fuse cap and the pop-up part in sequence so as to enable the first static contact to be separated from the moving contact; and one end of the second insulating column is provided with a second static contact, the second static contact is movably connected with a conducting rod, and the other end of the conducting rod is connected with a moving contact, so that the conducting rod drives the moving contact to rotate around the second static contact. Through the connection between the fuse wire and the elastic mechanism, the fuse cap and the pop-up part, after the fuse wire is fused, the moving contactand the static contact can be separated, arc extinguishing is rapid, the contact is not easy to generate heat, and the safety and reliability of the fuse are improved.
Description
Technical field[0001]The invention relates to the technical field of high-voltage equipment manufacturing, in particular to a novel high-voltage fuse and a preparation method thereof.Background technique[0002]The statements in this section merely provide background information related to the present invention, and do not necessarily constitute prior art.[0003]High-voltage fuses are mainly used for overload and short-circuit protection of transmission and distribution lines, transformers and other equipment, as well as equipment switching and switching operations. Common high-voltage fuses currently appearing on the market mainly include drop-out fuses and enclosed jet-type fuses. Type fuse is the most widely used.[0004]The inventor found that the existing drop-out fuse has many serious defects that affect the safe operation of the equipment, such as: exposed contacts, low insulation level, pulling and closing operations, etc., there are certain risks, and the contacts are in poor co...
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 & AuthorityApplications(China)
IPC IPC(8): H01H85/60H01H85/042H01H85/143H01H85/175H01H85/30H01H85/38H01H85/02H01H69/02
CPCH01H69/02H01H85/0241H01H85/042H01H85/143H01H85/175H01H85/30H01H85/38H01H85/60
Inventor滕月升
Owner滕月升