CN203233054U

CN203233054U - Transformer cabinet

Info

Publication number: CN203233054U
Application number: CN 201320265394
Authority: CN
Inventors: 王亚智; 陈俊明; 尚长生
Original assignee: CHINA COAL ELECTRIC Co Ltd
Current assignee: CHINA COAL ELECTRIC Co Ltd
Priority date: 2013-05-15
Filing date: 2013-05-15
Publication date: 2013-10-09
Anticipated expiration: 2023-05-15

Abstract

A transformer cabinet comprises a transformer cabinet body, a transformer, bus clips and a three-phase cable, wherein the transformer is fixedly arranged inside the transformer cabinet body; the bus clips are fixed onto a top framework inside the transformer cabinet body through bolts; horizontal mother boards, through three-phase groove-type briquettings sleeved thereon, are connected with three-phase vertical copper mother boards respectively and then are connected with the three-phase low-voltage contacts of the transformer; a bus clip is arranged on the outer side of each groove-type briquetting of the two ends of each horizontal mother board; the lower end of each bus clip is fixedly connected with the upper top wall of a bus clip bracket joint through a bolt; the outer wall of each bus clip bracket joint is fixedly connected with a vertical support beam through a bolt; the two ends of each vertical support beam are fixedly connected with the transverse framework of the upper portion inside the transformer cabinet body; and the three phase lines of the three-phase cable are separately arranged inside the transformer cabinet body and are connected with the three high-voltage contacts of the transformer respectively. The provided transformer cabinet has the advantages of effective prevention of eddy current effects and high heat radiation performance.

Description

A kind of transformer case

Technical field

The utility model relates to a kind of transformer case.

Background technology

In design of transformer in the past, because the size of transformer is larger, at middle part, bus district, there is the longitudinal metal beam to fix, to reach the purpose of strengthening cabinet intensity; But produce current vortex between three-phase in actual production process.

Eddy current effect be iron core-closed (or a bulk of conductor) in alternating magnetic field, produce induced current during the magnetic flux of alternation makes iron core-closed (or a bulk of conductor), form vortex flow.According to Maxwell's electromagnetic theory, the electric field of any variation is space generation magnetic field around all, and oscillating electric field space around produces the oscillating magnetic field of same frequency; The magnetic field of any variation all around space produce electric field, oscillating magnetic field space around produces the oscillating electric field of same frequency; Causing on the pros and cons analysis theories of current vortex, three-phase alternating current is when often balancing each other, and its total current vector is zero, and the vector in the magnetic field produced is zero.

Because the resistance of longitudinal metal beam is very little, and in an alternating magnetic field, the magnetic line of force has the induced current circulation through brace summer, can collect powerful eddy current, increase electric energy loss, and discharge a large amount of heat, it is very high that the thermal effect of electric current can be that the temperature of iron reaches, or even the fusing point of iron (or metal), make the iron fusing; Current vortex can cause a large amount of electric energy losses, also can cause heating, even burns out cable when serious.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of transformer case, and it has effectively avoided eddy current effect, and is easy to heat radiation.

For solving the problems of the technologies described above, the utility model adopts following technical proposals: a kind of transformer case comprises transformer cabinet, transformer, bus clip and threephase cable; Described transformer is fixed at transformer cabinet inside, and described bus clip is secured by bolts on the top frame of transformer cabinet inside; Horizontal busbar is connected respectively to three perpendicular copper bus-bars by three-phase grooved briquetting thereon of socket and is connected with the three-phase low-voltage contact of transformer; The grooved briquetting outside at the two ends on described horizontal busbar respectively is provided with a bus clip, the lower end of bus clip is fixedly connected with the upper roof of a bus clip gusset respectively by bolt, the lateral wall of each bus clip gusset is affixed by bolt and a longitudinal bracing beam, the transverse frame on the two ends of each longitudinal bracing beam and transformer cabinet top is affixed, to realize longitudinal strength spacing to bus clip and increase transformer cabinet, and, the longitudinal bracing beam is arranged to the Three-Phase Transformer contact outside, can effectively avoids eddy current effect; The setting that is separated from each other in transformer cabinet inside of the triple line of described threephase cable, and with three high-voltage contact of transformer, be connected respectively, be beneficial to the heat radiation of threephase cable, and triple line is divided and is arranged, by the three-phase equilibrium alternating current time, the magnetic field that can not change, can not produce current vortex.

Described bus clip gusset is that the sheet integral bending forms, and this bus clip gusset cross section is " L " font, should on " L " font bus clip gusset two right-angle sides, offer respectively the bolt fixing hole .

Described longitudinal bracing beam is that the sheet integral bending forms, and this longitudinal bracing beam cross section is approximate " C " font, on each sidewall of this approximate " C " font longitudinal bracing beam, offers the bolt fixing hole.

The serious consequence that the utility model produces for fear of current vortex, therefore cancel transformer central longitudinal of the prior art to crossbeam, for the intensity that makes transformer does not weaken, longitudinal beam is added to the Three-Phase Transformer contact outside, effectively avoided eddy current effect; The cable routing mode of transformer changes present three-phase into separately by original bundling, so not only beautiful and applicable but also be easy to heat radiation; Threephase cable is worn while laying by the three-phase equilibrium alternating current, and the magnetic field that can not change, can not produce current vortex.

The utlity model has lightweight, easy for installation, produce and fast to be easy to that controls, course of processing environmental protection, long service life, novel appearance good test effect and heat radiation are even, the advantage of good permeability.

The accompanying drawing explanation

Fig. 1 is main TV structure schematic diagram of the present utility model;

Fig. 2 is side-looking structural representation of the present utility model;

Fig. 3 is bus clip corner board structure schematic diagram of the present utility model;

Fig. 4 is the cross-sectional view of Fig. 3;

Fig. 5 is that bus clip gusset of the present utility model is looked up structural representation;

Fig. 6 is longitudinal bracing girder construction schematic diagram of the present utility model;

Fig. 7 is the cross-sectional view of Fig. 6;

Fig. 8 is that longitudinal bracing beam of the present utility model is looked up structural representation.

Embodiment

Shown in Fig. 1～Fig. 8, a kind of transformer case, comprise transformer cabinet 1, transformer 2, bus clip 3 and threephase cable 4; Described transformer 2 is fixed at transformer cabinet 1 inside, and described bus clip 3 suspends in midair on the top frame that is fixed in transformer cabinet 1 inside by bolt; Horizontal busbar is connected respectively to three perpendicular copper bus-bars 32 by three-phase grooved briquetting 31 thereon of socket and is connected with the three-phase low-voltage contact 21 of transformer 2; The grooved briquetting outside at the two ends on described horizontal busbar respectively is provided with a bus clip 3, the lower end of bus clip 3 is fixedly connected with the upper roof of a bus clip gusset 33 respectively by bolt, the lateral wall of each bus clip gusset 33 is affixed by bolt and a longitudinal bracing beam 34, and the transverse frame on the two ends of each longitudinal bracing beam 34 and transformer cabinet 1 top is affixed; The setting that is separated from each other in transformer cabinet 1 inside of the triple line of described threephase cable 4, and with three high-voltage contact 22 of transformer 2, be connected respectively.

Described bus clip gusset 33 forms for the sheet integral bending, and these bus clip gusset 33 cross sections are " L " font, should on 33 liang of right-angle sides of " L " font bus clip gusset, offer respectively bolt fixing hole 331.

Described longitudinal bracing beam 34 forms for the sheet integral bending, and these longitudinal bracing beam 34 cross sections are approximate " C " font, on each sidewall of this approximate " C " font longitudinal bracing beam 34, offer bolt fixing hole 341.

As mentioned above; the utility model relates to a kind of transformer case; described embodiment and figure; it is the utility model implementation result preferably; be not to be confined to the utility model; structure every and of the present utility model, feature etc. are similar to or identical person, all should belong to the scope of the utility model protection.

Claims

1. a transformer case, comprise transformer cabinet (1), transformer (2), bus clip (3) and threephase cable (4); It is characterized in that: described transformer (2) is fixed at transformer cabinet (1) inside, and described bus clip (3) is secured by bolts on the inner top frame of transformer cabinet (1); Horizontal busbar is connected respectively to three perpendicular copper bus-bars (32) by three-phase grooved briquetting (31) thereon of socket and is connected with the three-phase low-voltage contact (21) of transformer (2); The grooved briquetting outside at the two ends on described horizontal busbar respectively is provided with a bus clip (3), the lower end of bus clip (3) is fixedly connected with the upper roof of a bus clip gusset (33) respectively by bolt, the lateral wall of each bus clip gusset (33) is affixed by bolt and a longitudinal bracing beam (34), and the transverse frame on the two ends of each longitudinal bracing beam (34) and transformer cabinet (1) top is affixed; The setting that is separated from each other in transformer cabinet (1) inside of the triple line of described threephase cable (4), and with three high-voltage contact (22) of transformer (2), be connected respectively.

2. a kind of transformer case according to claim 1, it is characterized in that: described bus clip gusset (33) forms for the sheet integral bending, this bus clip gusset (33) cross section is " L " font, should on " L " font bus clip gusset (33) two right-angle sides, offer respectively bolt fixing hole (331).

3. a kind of transformer case according to claim 1 and 2, it is characterized in that: described longitudinal bracing beam (34) forms for the sheet integral bending, this longitudinal bracing beam (34) cross section is approximate " C " font, on each sidewall of this approximate " C " font longitudinal bracing beam (34), offers bolt fixing hole (341).