CN211719393U

CN211719393U - Heat dissipation device for electrical cabinet of phase-shifting rectifier transformer

Info

Publication number: CN211719393U
Application number: CN202020668564.3U
Authority: CN
Inventors: 张树林; 代兵; 李润
Original assignee: Hope Senlan Science & Technology Corp ltd
Current assignee: Hope Senlan Science & Technology Corp ltd
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2020-10-20
Anticipated expiration: 2030-04-28

Abstract

The utility model relates to a surrounding tube formula phase shift rectifier transformer regulator cubicle heat abstractor for high-voltage inverter, including air inlet filter screen (2) on each cabinet door of cabinet body subassembly (1), centrifugal fan (4) at built-in transformer subassembly (3) and top. Transformer subassembly (3) are by transformer (31), winding coil sleeve (311) and horizontal deep bead (52), additional wind channel bounding wall (33), silica gel board (34) and maintenance board (32) are constituteed, go up original horizontal deep bead (52), because wind channel bounding wall (33) go up along silica gel board (34) of connecting with cabinet body subassembly (1) interior roof close-fitting together, centrifugal fan (4) convulsions, the air current is taken away the heat from unit cabinet top in getting into winding coil sleeve (311) from air inlet filter screen (2), thereby reach fine cooling radiating effect.

Description

Heat dissipation device for electrical cabinet of phase-shifting rectifier transformer

Technical Field

The utility model relates to a power electronic high-power load electrical equipment especially relates to a surrounding tube formula phase shift rectifier transformer regulator cubicle heat abstractor for high-voltage inverter.

Background

The high-voltage frequency converter is a complete set of equipment and comprises a transformer unit cabinet, a power unit cabinet, a control unit cabinet and the like, and the phase-shifting rectifier transformer is an important component of the high-voltage frequency converter and has the characteristic of large heat productivity. In order to ensure the stable work of the phase-shifting rectifier transformer, the heat is taken away mainly by forced cold air, and the phase-shifting rectifier transformer placed in the electrical cabinet has the characteristics of high heat-resistant grade, good heat dissipation, strong overload capacity and the like. Along with the high-speed development of the society and the improvement of the industrial intelligent degree, the high-voltage frequency converter is adopted to carry out speed control on the high-power load motor, so that the motor runs in a variable speed manner, the quality of a product can be improved, the purposes of energy conservation and environmental protection can be achieved, and the high-power load motor is widely applied to high-power load motor equipment in the industries such as metallurgy, chemical industry, electric power, municipal water supply and heat supply, mining and the like. In a high-voltage frequency converter device, in order to improve the power density of a phase-shifting rectifier transformer, the heat dissipation problem of the phase-shifting rectifier transformer needs to be solved firstly, and an efficient heat dissipation device is needed because the heat generated by an iron core of the phase-shifting rectifier transformer is very high.

When the transformer unit cabinet heat dissipation device in the prior art works, the winding structure of the phase-shifting rectifier transformer adopts an inner form and an outer form, wind guiding and supporting effects are carried out between a high-voltage winding and a low-voltage winding through sleeve matching, a horizontal wind shield is arranged at 1/3 on the upper portion of a winding coil to cut off and accelerate, air is drawn by a cooling fan at the top of a cabinet body, and heat of the high-voltage coil and an iron core is taken away along a gap between wind sleeves. However, a certain gap inevitably exists between the horizontal wind shield and the cabinet body assembly, and a certain amount of cold air is short-circuited, so that air circulation is formed inside a winding coil of the transformer, and therefore, the heat dissipation defect is prominent, and the best heat dissipation effect cannot be achieved.

Disclosure of Invention

The utility model discloses make the improvement to the problem that above-mentioned prior art exists, promptly the to-be-solved technical problem of the utility model is to provide a phase-shifting rectifier transformer regulator cubicle heat abstractor for high-voltage inverter, this kind of heat abstractor wind channel is sealed and prevents to outwards reveal the air current from the internal portion of cabinet to open good heat dissipation channel.

In order to solve the technical problem, the utility model discloses this cabinet body subassembly of the phase-shifting rectifier transformer regulator cubicle heat abstractor of transformer includes the air inlet filter screen on each cabinet door, the centrifugal fan at built-in transformer subassembly and top. The transformer assembly comprises a transformer, a winding coil sleeve, a horizontal wind shield, an additional air duct coaming, a silica gel plate and a maintenance plate, wherein the centrifugal fan is used for exhausting air, and airflow enters the winding coil sleeve from an air inlet filter screen to bring out heat from the top of the unit cabinet.

By adopting the device, the original horizontal wind shield which leaves the factory is movably arranged at the upper part of the winding coil sleeve, the four sides of the horizontal wind shield are provided with angle irons, and the three winding coil sleeves penetrate through the horizontal wind shield.

The air duct coaming on the horizontal wind shield is connected by a sheet metal part and an angle iron screw and is encircled around the upper part of the transformer. The air duct coaming is connected with the silica gel plate along the upper edge, and the elastic silica gel plate is tightly attached to the inner top plate of the cabinet body assembly along the section, so that a good sealing effect can be achieved.

As the utility model discloses a further improvement, the through-hole of equipartition is opened to curb plate around the wind channel bounding wall, and the through-hole size uses both hands to get into visual operation as the standard, and the holding screw that takes off when the maintenance board overhauls the wiring is opened, and the installation of going back when finishing.

To sum up, the utility model discloses make full use of centrifugal fan convulsions heat dissipation function, the inside cooling heat dissipation of the even wind speed in independent wind channel of adoption changes the structural position of bounding wall under former horizontal deep bead and the wind channel, can realize the radiating efficiency maximize of forced air cooling, implements portably, uses reliably.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a perspective view of a prior art transformer assembly.

Fig. 2 is a front sectional view of the heat dissipation device for the electrical cabinet of the phase-shifting rectifier transformer of the present invention.

Fig. 3 is a perspective view of a transformer assembly in the heat sink shown in fig. 2.

Detailed Description

The embodiment of the utility model provides a for high-voltage inverter encloses cylinder phase-shifting rectifier transformer regulator cubicle heat abstractor, for understanding better the utility model discloses for the improvement that prior art made, earlier the different parts of prior art that mention the background art combine the drawing to explain, transformer 31, winding coil sleeve 311 and horizontal deep bead 52 in the transformer subassembly 5 that prior art figure 1 shows with the utility model discloses figure 3 is the same, and wherein the wind channel that the producer provided is down bounding wall 51 is replaced, horizontal deep bead 52 rebound.

The transformer unit cabinet shown in fig. 2 shows the position relationship of the transformer assembly 3 in the cabinet assembly 1, and two centrifugal fans 4 are selected.

In fig. 3, the horizontal wind shield 52 of the original drawing 1 moves upwards from the upper part 1/3 of the winding coil to the upper part of the winding coil, the four sides of the horizontal wind shield 52 are connected with the angle iron 35, the air duct enclosure 33 is fixed by screwing four vertical angle irons 35, four silica gel plates 34 are screwed and fixed at the opening part of the air duct enclosure 33, the rectangular size of the air duct enclosure 33 is matched with the inner size of the cabinet body assembly 1, the flexible connection matching with the top plate of the cabinet body assembly 1 is guaranteed to be gapless, and the concentrated air volume is further guaranteed not to be dissipated. Six through holes are formed in the front side plate and the rear side plate of the air duct coaming 33, the transformer assembly 3 is integrally installed in the cabinet body assembly 1 according to requirements, then the fixing screws are taken down to open the maintenance plate 32 to carry out input and output cable wiring, the maintenance plate 32 is returned after the completion, and the maintenance and repair are carried out in the same way.

Claims

1. The utility model provides a phase-shifting rectifier transformer regulator cubicle heat abstractor, includes air inlet filter screen (2) on each cabinet door of cabinet body subassembly (1), built-in transformer subassembly (3) of cabinet body subassembly (1), centrifugal fan (4) at cabinet body subassembly (1) top, its characterized in that: the transformer assembly (3) is composed of a transformer (31), a winding coil sleeve (311) and a horizontal wind shield (52), an additional air duct coaming (33), a silica gel plate (34) and a maintenance plate (32), the centrifugal fan (4) exhausts air, and heat is taken out from the top of the unit cabinet in the air flow entering the winding coil sleeve (311) from the air inlet filter screen (2).

2. The heat dissipating device for the electrical cabinet of the phase-shifting rectifier transformer according to claim 1, wherein: the horizontal wind shield (52) which is arranged in the factory is arranged at the upper part of the winding coil sleeve (311), angle irons (35) are arranged on four sides of the horizontal wind shield (52), and the three winding coil sleeves (311) penetrate through the horizontal wind shield (52).

3. The heat dissipation device for the electrical cabinet of the phase-shifting rectifier transformer according to claim 1 or 2, wherein: and the air duct coaming (33) arranged on the horizontal wind shield (52) is connected by adopting a sheet metal part and angle iron (35) through screws and encircles the periphery of the upper part of the transformer (31).

4. The heat dissipating device for the electrical cabinet of the phase-shifting rectifier transformer according to claim 1, wherein: the upper edge of the air duct coaming (33) is connected with the silica gel plate (34), and the upper edge of the elastic silica gel plate (34) is closely attached to the inner top plate of the cabinet body assembly (1) along the section.

5. The heat dissipating device for the electrical cabinet of the phase-shifting rectifier transformer according to claim 1, wherein: the through-hole of equipartition is opened to curb plate around wind channel bounding wall (33), and the through-hole size uses both hands to get into visual operation as the standard, take off set screw when maintenance board (32) overhauls the wiring and open, go on the installation again when finishing.