CN203398076U - Insulating device preventing breaking radial-arm type fuse from mis-closing - Google Patents

Abstract

The utility model discloses an insulating device preventing a breaking radial-arm type fuse from mis-closing. The insulating device comprises a tail end and a front end, wherein the tail end is connected with the front end via an insulating support rod, and the front end includes a cylinder for clamping a radial arm of the fuse. The insulating device has the advantages that it is ensured that the fuse is completely and reliably isolated, and it is prevented that the fuse is mis-closed to connect a loop and has no isolating and breaking effects. Thus, the personal, equipment and electrical-network safety is ensured, and normal ordered power supply is guaranteed.

Description

Prevent the insulation utensil that disjunction swing-arm type fuse closes by mistake

Technical field

The utility model relates to a kind of insulation utensil, and more specifically, it relates to a kind of insulation utensil that prevents that disjunction swing-arm type fuse from closing by mistake.

Background technology

Secondary circuits in substations disjunction swing-arm type fuse, comprises combined floodgate fuse holder, presses step-down to press fuse holder etc., and due to the design of itself, each fuse holder pulls open and is not all fixed afterwards, and fuse does not directly take off.At electric substation's switch and pressure, become in maintenance process, disjunction swing-arm type fuse, must be very reliable and secure as secondary circuit and obvious isolating points of primary equipment.But in real service work, owing to pulling open disjunction swing-arm type fuse, fuse does not directly take off, monolateral unfixing, while carrying out other operations at the same time, may be due to vibrations, touch by mistake and cause fuse to close by mistake, connect the former secondary circuit that should disconnect, may cause and close circuit breaker by mistake or press to become reverse charge, equipment and personnel be caused and had a strong impact on, in order very to determine the reliable of fuse isolation, disjunction swing-arm type fuse is transformed, prevented from pulling open after fuse the logical loop of mistake splice grafting and do not play isolation disconnection effect.

Summary of the invention

The purpose of this utility model is to overcome deficiency of the prior art, provides a kind of rational in infrastructure, simple to operate, prevents from pulling open the insulation utensil that disjunction swing-arm type fuse closes by mistake that prevents in the logical loop of mistake splice grafting after fuse.

This insulation utensil that prevents that disjunction swing-arm type fuse from closing by mistake, comprises tail end, front end, and described tail end is connected by insulating support rod with front end, and described front end is for blocking the cylinder of fuse spiral arm.

As preferably: described tail end is cuboid, surface is provided with No switching on sign.

As preferably: described each parts are insulation material.

The beneficial effects of the utility model are: can 100% determine the reliable isolation of fuse, this transformation to disjunction swing-arm type fuse, can prevent from pulling open after fuse the logical loop of mistake splice grafting and not play due isolation disconnection effect.Thereby guarantee the safety of the person, equipment, electrical network, guarantee normally power supply in an orderly manner.

Accompanying drawing explanation

Fig. 1 is the utility model front view;

Fig. 2 is the utility model end view;

Fig. 3 is the utility model vertical view;

Reference numeral: tail end 1, insulating support rod 2, front end 3.

Embodiment

Below in conjunction with drawings and Examples, the utility model is described further.Although the utility model is described in connection with preferred embodiment, should know, do not represent that the utility model is limited in described embodiment.On the contrary, the utility model is by alternative, modified model and the equivalent contained in the scope of the present utility model that can be included in attached claims restriction.

As shown in Figure 1 to Figure 3, adopting the front end 3 of insulation utensil is cylinder (fuse model), adopts front end 3 and the tail end 1 of insulating support rod 2 connection devices.Insulation utensil tail end 1 is made cuboid, writes " No switching on " in the above by red color font.

During work, open disjunction swing-arm type fuse, open circuit, is that front end 3 inserts former fuse position by barrel portion of the present utility model, the spiral arm of fuse can be blocked, and makes in its groove that can not be threaded to fuse holder, so circuit cannot be connected.Now, because cuboid tail end 1 of the present utility model has obvious redness " No switching on " sign, can remind accurately and effectively the state of the current fuse of staff, prevent that fuse from closing the generation of accident by mistake.After end-of-job, the utility model is taken out, the fuse that closes, circuit is connected, and resumes work.

Claims (3)

1. an insulation utensil that prevents that disjunction swing-arm type fuse from closing by mistake, it is characterized in that: comprise tail end (1), front end (3), described tail end (1) is connected by insulating support rod (2) with front end (3), and described front end (3) is for blocking the cylinder of fuse spiral arm.

2. the insulation utensil that prevents that disjunction swing-arm type fuse from closing by mistake according to claim 1, is characterized in that: described tail end (1) is cuboid, and surface is provided with No switching on sign.

3. the insulation utensil that prevents that disjunction swing-arm type fuse from closing by mistake according to claim 1, is characterized in that: described each parts are insulation material.

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