CN2610461Y

CN2610461Y - Flame-proof type air-immersed transformer

Info

Publication number: CN2610461Y
Application number: CN 03212521
Authority: CN
Inventors: 朴炳瑞; 张春和
Original assignee: JIANGSU ZHONGDIAN TRANSFORMER MANUFACTURING Co Ltd
Current assignee: JIANGSU ZHONGDIAN TRANSFORMER MANUFACTURING Co Ltd
Priority date: 2003-04-11
Filing date: 2003-04-11
Publication date: 2004-04-07
Anticipated expiration: 2013-04-11

Abstract

The utility model relates to a flame-proof dry-type transformer which is especially applicable for the mining flame-proof dry-type transformer or the mining flame-proof movable transformer station under the coal mine. The structure of the utility model is characterized in that two sides of a corrugated outer shell is welded with a guiding heat dissipation reinforced plate; the upper side or the lower side of the corrugated outer shell is an arc corresponding to the body; the wide face of a rectangular cross section wire is vertically arranged along the axial direction of an oblate barrel winding; heat dissipation channels between the windings, the layers and so on employ the stay bar whose cross section is in an H shape or a concave shape or an L shape; and a connection base of a signal temperature control expansion line uses an insulating sleeve provided with a hole on the center and a corresponding insulating gasket, which are directly disposed on a hole of an end cover and fixed with a conducting bar. The utility model solves the technical problems of the prior art that the corrugated outer shell has low intensity, poor heat dissipation and high shape size, the winding has low mechanical strength, poor heat dissipation and high cost, the connection base of the signal temperature control expansion line has low reliability and high cost, and so on.

Description

Flameproof dry-type transformer

Affiliated technical field

The utility model belongs to transformer ' s type, is a kind of flameproof dry-type transformer, is applicable to flameproof dry-type transformer used under the place of flame proof requirement, particularly coal mine or flameproof mining mobile transformer substation.

Background technology

At present, flameproof dry type transformer is mainly by magnetic core or claim iron core, winding, corrugated casing etc. to form.The technical problem of its existence is: 1, because its corrugated casing both sides are upright ripple, so mechanical strength is low, and radiating efficiency is poor; 2, because the upside of corrugated casing and the crest or the ripple valley of downside ripple are semi-circular, identical relatively poor with the device body of transformer, so the height of contour size is big; 3, because the axially parallel of wide the oblate winding in edge of its square-section lead is arranged, so mechanical Strength for Winding is relatively poor; 4,, therefore, not only influence the winding heat radiation, and its cost is higher because the heat dissipation channel between the formation winding layers or the stay cross section of the insulating radiation passage between high pressure winding and low pressure winding are rectangle; 5, because its signal temperature control lead-out wire junction block that passes corrugated casing adopts resin that four conducting rods and mounting flange are cast into the unitary whole structure, and easy to crack, rate of finished products is low, so cost height, reliability are low.

Summary of the invention

For solving the technical problem that exists in the prior art, the utility model will provide that a kind of corrugated casing intensity is higher, heat radiation better, overall dimension is less, the winding mechanical strength is higher, heat radiation is better, cost is lower, higher, the lower-cost flameproof dry-type transformer of signal temperature control lead-out wire junction block reliability.

The utility model solves in the prior art and exists the scheme of technical problem to be: it comprises magnetic core, winding, corrugated casing etc., and its special character is: the upright ripple outside respectively is welded with guiding heat radiation stiffener in the both sides of corrugated casing; Can be provided with ripple or rib on the guiding heat heat radiation stiffener; The crest of corrugated casing upside or downside ripple or ripple valley are the corresponding arc of device body that constitutes with magnetic core, winding etc.; The axial vertical arrangement of wide the oblate cartridge type winding in edge of the square-section lead of the oblate cartridge type winding of coiling; It is H shape or spill or L shaped stay that insulating radiation passage between winding layers between heat dissipation channel or high pressure winding and low pressure winding adopts cross section; The signal temperature control lead-out wire junction block that passes shell adopts porose insulating case and the corresponding insulation packing ring in center, and directly is contained on the hole that the corrugated casing end cap is provided with, and passes insulating case and the fixing structure of insulating washer with conducting rod.

The utility model compared with the prior art, its beneficial effect is:

1, because the utility model is welded with guiding heat radiation stiffener in the outside of the upright ripple in the both sides of corrugated casing, not only increased the intensity of shell, and the guiding that has increased shell is dispelled the heat and area of dissipation, again because guiding heat radiation stiffener is provided with ripple or rib, further improved the intensity of shell, so outer cover intensity is higher, the heat radiation better;

2, since the crest or the ripple valley of corrugated casing upside of the present utility model or downside ripple be and the corresponding arc of device body, make between shell and device body more identically, and reduced the height of shell, so the outer cover height size is less;

3, owing to wide axial vertical arrangement of the square-section lead of coiling oblateness cartridge type winding in the utility model along winding, improved the mechanical strength of oblate winding both sides planar section, therefore, mechanical Strength for Winding is higher;

4, because heat dissipation channel between the winding layers in the utility model or the insulating radiation passage between high pressure winding and low pressure winding, the stay cross section that adopts is H shape or spill or L type stay, reduced in the prior art square-section stay to the coverage rate of winding, and reduced the weight of stay, so winding good heat dissipation, cost are low;

5, adopt porose insulating case and the corresponding insulation packing ring in center owing to pass the signal temperature control lead-out wire junction block of shell in the utility model, and be directly installed on the hole that the corrugated casing end cap is provided with, and pass the fixing structure of insulating case with conducting rod, so reliability height, cost are low.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the A-A cross-sectional view of Fig. 1;

Fig. 3 is the B-B cross-sectional view of Fig. 1;

Fig. 4 is the local structure for amplifying schematic diagram of I signal temperature control lead-out wire junction block of Fig. 1;

Fig. 5 is the local structure for amplifying schematic diagram of the II of Fig. 2.

Among the figure: 1, corrugated casing, 1.1, end cap, 1.2, ripple, 1.2a crest, 1.2b the ripple valley, 2, magnetic core, 3, winding, 3.1, the low pressure winding, 3.2, the high pressure winding, 4, guiding heat radiation stiffener, 4a. ripple or rib, 5, the cross section is H shape stay, 6, the cross section is the spill stay, 7, the cross section is L shaped stay, 8, insulating case, 9, insulating washer, 10, conducting rod, I, signal temperature control lead-out wire junction block, 11, the square-section lead.

Embodiment

Exhibition 1～Fig. 4.Embodiment of the present utility model comprises compositions such as magnetic core 2, high pressure winding 3.2, low pressure winding 3.1, corrugated casing 1, its special character is: lead and increase area of dissipation for the mechanical strength of strengthening corrugated casing 1 upright corrugated portion with to air flows, be welded with the hot stiffener 4 that leads in the outside of the upright ripple in the both sides of corrugated casing 1; Can be provided with ripple or rib 4a on the guiding heat radiation stiffener 4, with the intensity of further reinforcement corrugated casing 1; For reducing the height of corrugated casing 1, the crest 1.2a of corrugated casing upside or downside ripple 1.2 or ripple valley 1.2b are and the corresponding arc of device body that is made of magnetic core 2, winding 3 etc.; The axial vertical arrangement of wide the oblate cartridge type winding 3 in edge of the square-section lead 11 of the oblate cartridge type winding 3 of coiling increasing the mechanical strength of winding 3 planar sections, thereby has improved the mechanical strength of winding 3 integral body; For reducing stay to the covering of winding 3 radiating surfaces and the cost of reduction stay, it is that H shape stay 5 or cross section are that spill stay 6 or cross section are L shaped stay 7 that the insulating radiation passage that winding 3 interlayer heat dissipation channels or high pressure winding 3.2 and low pressure winding are 3.1 adopts cross section; For the reliability that improves signal temperature control lead-out wire junction block I with reduce cost, pass the temperature control lead-out wire junction block I of the end cap 1.1 of corrugated casing 1, insulating case 8 that the employing center is porose and corresponding insulation packing ring 9, and directly be contained on the hole that corrugated casing 1 end cap 1.1 is provided with, and pass the fixing structure of insulating case 8 and insulating washer 9 with conducting rod 10.

Claims

1, flameproof dry-type transformer, it comprises magnetic core, winding, corrugated casing etc., it is characterized in that: the upright ripple outside respectively is welded with guiding heat radiation stiffener in the both sides of corrugated casing.

2, flameproof dry-type transformer according to claim 1 is characterized in that: can be provided with ripple or rib on the guiding heat radiation stiffener.

3, flameproof dry-type transformer according to claim 1 and 2 is characterized in that: the crest of corrugated casing upside or downside ripple or ripple valley are the corresponding arc of device body that constitutes with magnetic core, winding etc.

4, flameproof dry-type transformer according to claim 3 is characterized in that: the axial vertical arrangement of wide the oblate cartridge type winding in edge of the square-section lead of the oblate cartridge type winding of coiling.

5, flameproof dry-type transformer according to claim 4 is characterized in that: it is H shape or spill or L shaped stay that the insulating radiation passage between winding layers between heat dissipation channel or high pressure winding and low pressure winding adopts cross section.

6, flameproof dry-type transformer according to claim 5, it is characterized in that: the signal temperature control lead-out wire junction block that passes shell adopts porose insulating case and the corresponding insulation packing ring in center, and directly be contained on the hole that the corrugated casing end cap is provided with, and pass insulating case and the fixing structure of insulating washer with conducting rod.