CN204230192U - Oil immersion type high-voltage and current-limitation fuse outer sleeve - Google Patents

Abstract

The utility model discloses an outer sleeve of an oil-immersed high-voltage current-limiting fuse; the purpose of the utility model is to provide an outer sleeve of an oil-immersed high-voltage current-limiting fuse without oil leakage; it includes a sleeve Body, flange, conductive end cover, conductive coil, oil-immersed high voltage current limiting fuse oil leakage component, sealing ring, screw and conductive sheet; the cylinder is cylindrical and hollow inside, the flange and the conductive end The covers are respectively fixed at both ends of the barrel; the oil-immersed high-voltage current-limiting fuse oil-leakage assembly includes screws and nuts, the screws include a base, and a screw rod extends upward from the front of the base, and the nut cooperates with the screw rod , There is a threaded hole at the center of the back of the base, the threaded hole extends upwards to the inside of the screw, and the centerline of the threaded hole is on the same line as the centerline of the screw, and an annular sealing groove is provided on the back of the base. The sealing groove is located outside the inner screw hole; it has the characteristics of simple structure, reasonable design and convenient use.

Description

Oil-immersed high-voltage current-limiting fuse outer sleeve

technical field

The utility model relates to an accessory of an oil-immersed high-voltage current-limiting fuse, in particular to an outer sleeve of an oil-immersed high-voltage current-limiting fuse.

Background technique

The cylinder body of the outer sleeve of the existing oil-immersed high-voltage current-limiting fuse is composed of two sections of fusion tubes. The two sections of fusion tubes are connected by conductive coils, and then the interface is sealed with a sealing tape. The oil-immersed high-voltage current-limiting fuse outer sleeve often leaks during use, which damages the oil-immersed high-voltage current-limiting fuse, reduces the service life of the oil-immersed high-voltage current-limiting fuse, and increases the risk factor.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art and provide an oil-immersed high-voltage current-limiting fuse outer sleeve without oil leakage.

In order to achieve the above purpose, the outer sleeve of an oil-immersed high-voltage current-limiting fuse designed by the utility model includes a cylinder body, a flange, a conductive end cover, a conductive coil, and an oil-immersed high-voltage current-limiting fuse. Oil leakage prevention components, sealing rings, screws and conductive sheets; the cylinder body is cylindrical and hollow inside, and the two ends of the cylinder body are stepped holes, and the flange plate and the conductive end cap are respectively fixed on both ends of the cylinder body. There is a sealing ring 1 fixed between the flange plate and the conductive end cover; a screw rod 1 penetrating through the side wall of the cylinder body is provided on the side wall of the cylinder body, and one end of the screw rod 1 is fixed with the conductive coil, and the conductive coil is located in the cylinder body Inside, the other end of the screw rod 1 is connected to the oil-immersed high-voltage current-limiting fuse oil-leakage component, and the outer surface of the cylinder body in contact with the oil-immersed high-voltage current-limiting fuse oil-leakage component is a horizontal plane; the oil-immersed high-voltage current-limiting fuse The anti-leakage assembly of the flow fuse includes a screw and a nut. The screw includes a base, and a screw rod 2 extends upward on the front of the base. The threaded hole extends upwards to the inside of the second screw, and the centerline of the threaded hole is on the same line as the centerline of the second screw, and the threaded hole on the screw of the oil-immersed high-voltage current-limiting fuse oil leakage prevention component is matched with the first screw , There is an annular sealing groove on the back of the base, and the sealing groove is located outside the inner screw hole.

For the convenience of processing, the annular sealing groove is an annular sealing groove.

In order to prevent oil leakage, the cylinder body is an integrated cylinder body, and the flange plate, the conductive end cover and the cylinder body are fixed and sealed with sealant.

In order to make the connection between the screw rod and the conductive ring more stable without damaging the barrel, the fixing method of the screw rod and the conductive ring is drawn arc welding.

The outer sleeve of the oil-immersed high-voltage current-limiting fuse of the utility model includes a cylinder body, a flange plate, a conductive end cover, a conductive coil, an oil-immersed high-voltage current-limiting fuse anti-oil assembly, a sealing ring, and a screw rod. and conductive sheet; because the cylinder body of the outer sleeve of the oil-immersed high-voltage current-limiting fuse is integrated, and flanges and conductive end caps are installed at both ends of the cylinder body, and the sealant is used to seal the cylinder body Both ends, in the middle of the cylinder, are provided with a screw that runs through the cylinder. The screw and the screw of the oil-immersed high-voltage current-limiting fuse oil-leakage component cooperate with each other. Since the back of the screw base is provided with a sealing groove, the sealing ring is installed In the sealing groove, when the screw and the screw are matched, the sealing ring is sandwiched between the two, which can effectively prevent the oil from penetrating into the cylinder; therefore, it has the characteristics of simple structure, reasonable design and convenient use.

Description of drawings

Fig. 1 is the front view of the utility model;

Fig. 2 is the top view of the utility model;

Fig. 3 is the sectional view of the utility model on B-B direction;

Figure 4 is a cross-sectional view of the oil-immersed high-voltage current-limiting fuse oil leakage prevention assembly in the direction A-A;

Fig. 5 is a top view of an oil-immersed high-voltage current-limiting fuse oil leakage prevention assembly.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figure 1, Figure 2, Figure 3, Figure 4, and Figure 5, an oil-immersed high-voltage current-limiting fuse outer sleeve described in this embodiment includes a cylinder body 1, a flange plate 2, a conductive end Cover 3, conductive coil 6, oil-immersed high-voltage current-limiting fuse oil leakage prevention component 4, sealing ring, screw and conductive sheet 5; cylinder 1 is cylindrical and hollow inside, and both ends of cylinder 1 are stepped holes , the sealing ring one is respectively installed in the stepped holes at both ends of the cylinder body 1, and a No. , the flange 2, the conductive end cover 3 and the cylinder 1 are fixed and sealed with a sealant to prevent oil leakage; the side wall of the cylinder 1 is provided with a screw one that runs through the side wall of the cylinder, and one end of the screw one is connected to the cylinder body. The conductive coil 6 is fixed, and the conductive coil 6 is located inside the barrel 1. The other end of the screw rod 1 is connected to the oil-immersed high-voltage current-limiting fuse oil-leakage component 4, and the oil-immersed high-voltage current-limiting fuse oil-leakage component 4 The outer surface of the cylinder body 1 that is in contact with is a horizontal plane, so that the oil-immersed high-voltage current-limiting fuse oil leakage prevention component 4 and the outer surface of the cylinder body 1 are more closely matched, and the oil-immersed high-voltage current-limiting fuse is oil-leakage-proof A sealing ring is fixed between the component 4 and the cylinder body 1, which can prevent the oil from penetrating into the cylinder body 1; the oil-immersed high-voltage current-limiting fuse oil leakage prevention component 4 includes a screw 7 and a nut 8, and the screw 7 includes a base, on the front of the base there is screw rod 2 extending upwards, the nut cooperates with the screw rod 2, the conductive sheet 5 is fixed between the screw 7 and the nut 8, a threaded hole 9 is opened at the center of the back of the base, the thread The hole 9 extends upwards to the inside of the second screw, the centerline of the threaded hole 9 is on the same line as the centerline of the second screw, and an annular sealing groove 10 is arranged on the back of the base, and the annular sealing groove 10 is located in the inner screw hole The outer side of 9, sealing ring two is fixed in the annular sealing groove.

Claims (3)

1. an oil immersion type high-voltage and current-limitation fuse outer sleeve, it comprises cylindrical shell, ring flange, conduction end cap, conduction electricity circle, oil immersion type high-voltage and current-limitation fuse oil-leakage-prevention assembly, sealing ring, screw rod and conducting strip; Cylindrical shell is cylindric and inner hollow, and the two ends of cylindrical shell are shoulder hole, and ring flange is separately fixed at the two ends of cylindrical shell with conduction end cap, at cylindrical shell and ring flange, conducts electricity between end cap and is fixed with sealing ring one; The sidewall of cylindrical shell is provided with the screw rod one running through cylinder lateral wall, one end of screw rod one is enclosed fixing with conduction electricity, conduction electricity circle is positioned at inner barrel, the other end of screw rod one is connected with oil immersion type high-voltage and current-limitation fuse oil-leakage-prevention assembly, is horizontal plane with the outer surface of the cylindrical shell of oil immersion type high-voltage and current-limitation fuse oil-leakage-prevention component touch; Oil immersion type high-voltage and current-limitation fuse oil-leakage-prevention assembly, it comprises screw and nut, described screw comprises pedestal, screw rod two is extended with facing up of pedestal, nut coordinates with screw rod two, screwed hole is had in the center at the back side of pedestal, it is inner that screwed hole extends upwardly to screw rod two, and the center line of the center line of screwed hole and screw rod two on the same line, and the screw upper screwed hole of oil immersion type high-voltage and current-limitation fuse oil-leakage-prevention assembly coordinates with screw rod one, be provided with the seal groove of annular at the back side of pedestal, seal groove is positioned at the outside of inner bolt hole.

2. a kind of oil immersion type high-voltage and current-limitation fuse outer sleeve according to claim 1, is characterized in that: the seal groove of described annular is circular seal groove.

3. a kind of oil immersion type high-voltage and current-limitation fuse outer sleeve according to claim 1, is characterized in that: described cylindrical shell is integral type cylindrical shell, adopts sealant sealing after ring flange, conduction end cap and cylindrical shell are fixing.