CN203850136U - Dry-type transformer with built-in fuse installation function - Google Patents

Abstract

The utility model relates to a dry-type transformer with a built-in fuse installation function. The dry-type transformer comprises a transformer winding, a mounting base, a transformer low-voltage binding post and a transformer high-voltage wiring sleeve. The transformer high-voltage wiring sleeve is mounted on the transformer winding. An axial fuse mounting hole used for installation of a fuse is made in the axis of the transformer high-voltage wiring sleeve. A metal elastic sheet is mounted in the rear end of the fuse mounting hole. The rear end face of the metal elastic sheet is connected with a high-voltage connection wire led out of the transformer winding. The front end face of the metal elastic sheet is connected with the fuse. A cable connector of a high voltage cable is inserted in the front end of the fuse mounting hole. The dry-type transformer with the built-in fuse installation function is reasonable in structural design, easy to improve, practical and convenient and fast to operate; by the adoption of the dry-type transformer, economic expenditure can be reduced, the working speed can be increased, and the dry-type transformer is particularly suitable for being used in an old project improvement.

Description

There is the dry-type transformer that built-in fuse function is installed

Technical field

The utility model relates to transformer technology field, especially a kind of dry-type transformer with the built-in fuse function of installation.

Background technology

Existing dry-type transformer (as shown in Figure 1-Figure 3), its Transformer Winding 1 is arranged in mounting seat 2, Transformer Winding is drawn low compression bonded line and is connected to form transformer low voltage binding post 3 with terminal, Transformer Winding is drawn high-voltage connection and is connected to form transformer high-voltage binding post 4 with terminal, transformer high-voltage binding post access high-tension electricity, at transformer low voltage binding post, induce low tension, for low-voltage load, use.High-pressure side overcurrent protection and the short-circuit protection of transformer often need to be protected with fuse, and the combined electrical apparatus that so often need to use fuse and on-load switch to form at the high pressure inlet wire of transformer, realizes the protection to transformer.

At the common box type of some old engineered middle uses not with the ring main unit of expanded function; when it need to increase tranformer protection function; often need original old switch cubicle to remove; change the new switch cubicle with fuse defencive function; at this moment often cause huge waste, and increased workload, reduced operating efficiency.

Summary of the invention

The purpose of this utility model be to provide a kind of reasonable in design, easy to use, can reduce Financial cost, improve construction reformation efficiency be adapted at not being with the dry-type transformer that built-in fuse function is installed that has using on the ring main unit of expanded function.

The purpose of this utility model realizes by following technological means:

A kind of dry-type transformer with the built-in fuse function of installation, comprise Transformer Winding, mounting seat and transformer low voltage binding post, Transformer Winding is arranged in mounting seat, low compression bonded line and terminal that Transformer Winding is drawn are connected to form transformer low voltage binding post, it is characterized in that: also comprise transformer high-voltage connecting sleeve, transformer high-voltage connecting sleeve is installed in Transformer Winding, the axle center of this transformer high-voltage connecting sleeve make one axial for the fuse installing hole of fuse is installed, a metallic elastic sheet is installed in the inside of this fuse installing hole rear end, the high-voltage connection that the rear end face of this metallic elastic sheet is drawn with Transformer Winding is connected, the front end face of this metallic elastic sheet is connected with fuse, fuse installing hole front end inserts the cable joint of high-tension cable.

And described transformer high-voltage connecting sleeve is two, it is arranged on respectively the two ends, left and right of Transformer Winding.

And described metallic elastic sheet is copper sheet.

And described fuse installing hole front end outer surface is made truncated cone.

Advantage of the present utility model and good effect are:

1, this transformer can be installed fuse in transformer high-voltage connecting sleeve; an end that connects the cable joint of high-tension cable is received in the old switchgear that there is no fuse defencive function; the other end inserts and is connected with transformer high-voltage connecting sleeve; can realize high input voltage, low pressure output.Adopt after this structure, common box type can not continue to retain use with the ring main unit of expanded function, needn't be replaced with the new-type switch cubicle with fuse defencive function, has therefore significantly reduced construction cost, has reduced economic waste.

2, owing to adopting after this transformer device structure, not only need not remove old-fashioned ring main unit, and transformer is simple and convenient with being connected of ring main unit, has therefore reduced operation easier, improved operating efficiency, accelerated construction schedule.

3, the utility model is a kind of reasonable in design, improves simple and practical, the convenient to operation dry-type transformer that built-in fuse function is installed that has, adopt this transformer can reduce economic expenditure, accelerate operating rate, be particluarly suitable for old engineered middle use.

Accompanying drawing explanation

Fig. 1 is the structural representation of existing dry-type transformer;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is the left view of Fig. 1;

Fig. 4 is the front view with the dry-type transformer that built-in fuse function is installed;

Fig. 5 is the vertical view of Fig. 4;

Fig. 6 is the rearview of Fig. 4;

Fig. 7 is the left view of Fig. 4;

Fig. 8 is that the A of Fig. 7 is to overlooking enlarged diagram.

Embodiment

Below in conjunction with accompanying drawing, describe embodiment of the present utility model in detail; It should be noted that, the present embodiment is narrative, is not determinate, can not limit protection range of the present utility model with this.

As shown in Fig. 4-Fig. 8, a kind of dry-type transformer with the built-in fuse function of installation, comprise Transformer Winding 1, mounting seat 2 and transformer low voltage binding post 3, Transformer Winding is arranged in mounting seat, and low compression bonded line and terminal that Transformer Winding is drawn are connected to form transformer low voltage binding post.

Innovative point of the present utility model is: also comprise transformer high-voltage connecting sleeve 5, transformer high-voltage connecting sleeve is installed in Transformer Winding, in the present embodiment, transformer high-voltage connecting sleeve is two, and it is arranged on respectively the two ends, left and right of Transformer Winding.The axle center of this transformer high-voltage connecting sleeve make one axial for the fuse installing hole 7 of fuse is installed, a metallic elastic sheet 6 is installed in the inside of this fuse installing hole rear end, this metallic elastic sheet is copper sheet.The high-voltage connection 8 that the rear end face of metallic elastic sheet is drawn with Transformer Winding is connected, and the front end face of this metallic elastic sheet is connected with fuse.Fuse installing hole front end outer surface is made truncated cone, and this fuse installing hole front end inserts the cable joint 9 of high-tension cable, and the other end of this cable joint is received in the old switchgear that there is no fuse defencive function.

Operation principle of the present utility model is:

Transformer Winding is arranged in mounting seat; Transformer Winding is drawn low compression bonded line and is connected to form transformer low voltage binding post with terminal; Transformer Winding is drawn high-voltage connection and is connected with the metallic elastic sheet in fuse installing hole; now fuse is placed in fuse installing hole; then with the cable joint that connects high-tension cable; one end is received in the old switchgear that there is no fuse defencive function, and the other end inserts and is connected with transformer high-voltage connecting sleeve.At high-tension cable access high-tension electricity, high-tension electricity is passed into transformer high-voltage binding post through overcurrent fuse, produces low tension, for low-voltage load at transformer low voltage binding post like this.

Claims (4)

1. one kind has the dry-type transformer that built-in fuse function is installed, comprise Transformer Winding, mounting seat and transformer low voltage binding post, Transformer Winding is arranged in mounting seat, low compression bonded line and terminal that Transformer Winding is drawn are connected to form transformer low voltage binding post, it is characterized in that: also comprise transformer high-voltage connecting sleeve, transformer high-voltage connecting sleeve is installed in Transformer Winding, the axle center of this transformer high-voltage connecting sleeve make one axial for the fuse installing hole of fuse is installed, a metallic elastic sheet is installed in the inside of this fuse installing hole rear end, the high-voltage connection that the rear end face of this metallic elastic sheet is drawn with Transformer Winding is connected, the front end face of this metallic elastic sheet is connected with fuse, fuse installing hole front end inserts the cable joint of high-tension cable.

2. a kind of dry-type transformer that built-in fuse function is installed that has according to claim 1, is characterized in that: described transformer high-voltage connecting sleeve is two, and it is arranged on respectively the two ends, left and right of Transformer Winding.

3. a kind of dry-type transformer that built-in fuse function is installed that has according to claim 1, is characterized in that: described metallic elastic sheet is copper sheet.

4. a kind of dry-type transformer that built-in fuse function is installed that has according to claim 1, is characterized in that: described fuse installing hole front end outer surface is made truncated cone.