CN102568973A - Temporary connecting device for live-line replacement of fuse tube of drop type fuse - Google Patents

Abstract

The invention discloses a temporary connecting device for the live-line replacement of a fuse tube of a drop type fuse. The temporary connecting device comprises an insulating operating member, two conductive connectors and a conductive body, wherein the conductive body is arranged between the two conductive connectors, and a fuse is in conduction with a primary lead wire through the conductive connectors and the conductive body. According to the invention, a damaged fuse element can be replaced or a longer high-voltage line can be overhauled without powering off, so that the constant supply of power is ensured, and normal operation of production and living in a line range is maintained.

Description

Temporary connection device for live replacement of fuse holders for drop-out fuses

technical field

The invention relates to a live working device for power transmission and transformation equipment, in particular to a temporary connection device for live replacement of a fuse tube of a drop-out fuse.

Background technique

Drop-out fuse is a commonly used short-circuit protection switch. It has the characteristics of low cost, convenient operation, and strong adaptability to outdoor environments. It is widely used in branch lines of 10kV distribution lines and distribution transformers. At present, in the 10kV high-voltage line, if the fuse of the drop-out fuse has a problem and needs to be replaced, or when the drop-out fuse is overhauled, it usually needs to be replaced by a power outage, which will cause a large area and a long time. Power failure affects the normal operation of enterprises and institutions within the line power supply range and people's daily life, and brings huge losses to social and economic benefits.

Contents of the invention

The technical problem to be solved by the present invention is to provide a temporary connection device for live replacement of drop-out fuses, which can replace fuse elements of drop-out fuses or repair long lines without power failure.

In order to solve the above-mentioned technical problems, the temporary connection device for live replacement of drop-out fuses according to the present invention includes an insulating operating part, two conductive joints and a conductor, and the conductor is installed between the two conductive joints , the conductor is connected to the circuit where the fuse is located through a conductive joint.

Preferably, the two conductive joints are fixed connection joints, the insulating operating part is an insulating rod installed on the two fixed connection joints, the conductor is a connecting wire, and the two ends of the connecting wire are respectively fixed on two Fix the connection on the joint. The one fixed connection joint is connected with the main conductor of the line, and the other fixed connection joint is connected with the wiring rod of the fuse.

Preferably, the insulated operating member is an insulated operating rod, the two conductive joints are respectively the lower fixed contact and the upper fixed contact, and the electrical conductor includes a connecting lead wire and an overload Fuse tube, one end of the connection lead is electrically connected to the overload fuse tube, the other end is fixedly connected to the lower fixed contact, the lower end of the overload fuse tube is connected to the upper end of the copper adjustment tube installed on the lower fixed contact , a universal joint is fixed outside the lower end of the copper regulating tube, and the universal joint is connected to the upper end of the insulating operating rod. The upper fixed contact is connected to the upper pile head of the fuse, and the lower fixed contact is connected to the lower pile head of the fuse.

The present invention can timely replace defective drop-out fuse elements without power failure on the line, ensuring the continuous supply of electric power. For some important users and dedicated users, such as hospitals, schools, troops, or power supply reliability Enterprises with relatively high requirements have extremely high practical significance.

In addition, the present invention can also ensure non-stop maintenance on long lines, reduce power outage time, increase power supply, and win better economic and social benefits for enterprises.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

Fig. 1 is the structural representation of the first embodiment of the present invention;

Fig. 2 is the front view of the second embodiment of the present invention;

Fig. 3 is a side view of a second embodiment of the present invention.

Wherein the reference signs are explained as follows:

1 is the fixed connection joint; 2 is the insulating rod; 3 is the connecting wire; 4 is the upper fixed contact; 5 is the lower fixed contact; 6 is the overload fuse tube; 7 is the copper regulating tube; 8 is the connecting lead; 9 For universal joints.

Detailed ways

The temporary connection device for live replacement of drop-out fuses according to the present invention includes an insulating operating part, two conductive joints and a conductor, the conductor is installed between the two conductive joints, and the conductor passes through The conductive joint is connected in the line where the fuse is located.

In the first preferred embodiment of the present invention, as shown in Figure 1, the two conductive joints are fixed connection joints 1, the insulating operating part is an insulating rod 2 installed on the two fixed connection joints 1, and the conductor is a Root connecting wire 3. The two ends of the connecting wire 3 are respectively fixed on two fixed connecting joints 1, one fixed connecting joint 1 is connected with the main wire, and the other fixed connecting joint 1 is connected with the wiring rod of the fuse.

This first embodiment is mainly used for intermediate potential work, and replaces 10kV drop-out fuse elements with load. The specific operation steps include: 1) Park the overhead insulation vehicle at a suitable position, and the staff controls the insulating bucket arm to a suitable position; 2) The staff puts on insulating gloves, and uses the insulating rod 2 to connect the fixed connection joint 1 and the main wire, fuse 3) Pull the fuse tube of the fuse with an insulating operating rod, and lower it to the ground with a sling, and replace the fuse tube components by the ground staff; 4) Put the fuse tube Put the wire tube back into the fuse, and close the fuse with an insulating operating rod; 5) Remove the temporary connection device, and replace the fuse tube.

In the second preferred embodiment of the present invention, as shown in Figures 2 and 3, the insulating operating member is an insulating operating rod, and the two conductive joints are respectively the lower fixed contact 5 and the upper fixed contact 4, and the conductor It includes a connection lead wire 8 and an overload fuse tube 6 electrically connected to the upper fixed contact 4 . One end of the connection lead 8 is electrically connected to the overload fuse 6 , and the other end is fixedly connected to the lower fixed contact 5 . The lower end of the overload fuse tube 6 is connected to the upper end of the copper adjustment tube 7 installed on the lower fixed contact 5, and a universal joint 9 is fixed outside the lower end of the copper adjustment tube 7, and the universal joint 9 is connected with the upper end of the insulating operating rod. The upper fixed contact 4 is connected to the upper pile head of the fuse, and the lower fixed contact 5 is connected to the lower pile head of the fuse.

This second embodiment is mainly used for ground potential work, and replacement of 10kV dropout fuse elements under load. The specific operation steps include: 1) install the universal joint 9 of the temporary connection device on the insulating operating rod; , and the lower pile heads are connected to form a charged body; 3) Use an insulating operating rod to pull the fuse tube of the drop-out fuse; 4) Pick out the fuse tube and use a sling to put it on the ground, and the ground staff will replace it Fuse tube components; 5) Put the replaced fuse tube into the notch below the fuse with an insulating operating rod, and close the fuse; 6) Remove the temporary connection device, and replace the fuse tube.

The invention can timely replace the 10kV drop-out fuse element when the power supply line is normally powered; it can ensure the safe and normal power supply of the power supply line, and avoid the adverse effects of power failure on power supply enterprises and power users; at the same time, it improves the reliability of power supply, The electricity sales have improved the service quality of the industry and ensured uninterrupted power supply to customers.

The present invention has been described in detail through specific examples above, but these do not constitute a limitation to the present invention. Without departing from the principle of the present invention, those skilled in the art can make many equivalent replacements and improvements to the connection structure, and these should also be regarded as the protection scope of the present invention.

Claims (5)

1. A temporary connection device for live replacement of a drop-out fuse, characterized in that it includes an insulating operating part, two conductive joints and a conductor, and the conductor is installed between the two conductive joints, The conductor is connected to the circuit where the fuse is located through a conductive joint. 2. The temporary connection device for live replacement of drop-out fuses according to claim 1, characterized in that: the two conductive joints are fixed connection joints, and the insulating operating parts are installed on the two fixed connection joints. The insulating rod on the joint, the conductor is a connecting wire, and the two ends of the connecting wire are respectively fixed on two fixed connecting joints. 3. The temporary connection device for live replacement of drop-out fuses according to claim 1, characterized in that: the insulating operating part is an insulating operating rod, and the two conductive joints are respectively lower fixed contacts. The conductor includes a connecting lead wire and an overload fuse electrically connected to the upper fixed contact, one end of the connecting lead is electrically connected to the overload fuse tube, and the other end is fixedly connected to the lower fixed contact. On the head, the lower end of the overload fuse tube is connected to the upper end of the copper adjustment tube installed on the lower fixed contact, and a universal joint is fixed outside the lower end of the copper adjustment tube, and the universal joint is insulated from the The upper end of the operating rod is connected. 4. The temporary connection device for live replacement of the drop-out fuse according to claim 2, characterized in that: the one fixed connection joint is connected to the main wire of the line, and the other fixed connection joint is connected to the main wire of the fuse. The wiring rod is connected. 5. The temporary connection device for live replacement of the drop-out fuse according to claim 3, characterized in that: the upper fixed contact is connected to the upper pile head of the fuse, and the lower fixed contact is connected to On the lower pile head of the fuse.

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