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Transducer body for mines

A frequency converter and body technology, applied in the field of frequency converter speed control devices, can solve the problems of affecting the heat dissipation effect, occupying a large space in the roadway, large volume, etc., achieving the effect of light weight, solving explosion-proof and heat dissipation, and small volume

Active Publication Date: 2010-05-05
PINGAN ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when this technology is applied to downhole inverter equipment, due to the harsh downhole environment and a lot of dust, the radiator is easy to accumulate dust, which greatly affects the heat dissipation effect
At the same time, this technology does not solve the problem of explosion-proof very well, and the volume is too large, which takes up a lot of space in the roadway
[0008] The external solution of the frequency converter can realize the functions of the present invention, but the external solution is too large and occupies a large space in the roadway

Method used

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  • Transducer body for mines
  • Transducer body for mines
  • Transducer body for mines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1, in the present invention, the upper half-shell 1 and the lower half-shell 2 form a cylindrical shell formed by a sealed fit and solid connection at both ends, and the upper half-shell 1 and the lower half-shell 2 can be connected The bolts 5 are fixedly connected, the inner cavities of the upper half shell 1 and the lower half shell 2 are respectively in the shape of semicircular grooves with end plates at both ends, and the connecting surfaces of the upper half shell 1 and the lower half shell 2 are spacers. Explosion joint surface 9 is provided with wiring cable through hole 7 on the wall of upper half shell 1 or lower half shell 2, and described wiring cable through hole 7 can adopt screw hole, is provided with through hole 7 in wiring cable through hole 7. Hole explosion-proof surface 8. refer to Figure 1 to Figure 5 . It can be rolled into a cylindrical flameproof body with materials that are easy to transfer heat and have high strength, such as ca...

Embodiment 2

[0022] Embodiment 2, the present invention can also be provided with a filter mounting bracket 4 near the junction of the upper half-shell 1 or the lower half-shell 2, and the electrical assembly 3 is installed inside the upper half-shell 1 or the lower half-shell 2 On the surface, try to make the components evenly distributed on the inner side of the flameproof enclosure of the device, and use the air flow of the fan or local fan to forcibly cool the frequency conversion speed control device. It has been verified by the prototype test that the temperature of the device will not exceed 35°C during operation. By installing the filter 11 on the filter mounting bracket 4, the conduction interference and emission interference generated by the frequency converter can be reduced, the power quality can be improved and the external interference of the frequency conversion device can be reduced, and the reliability of the safe use of other electronic devices in the well is improved. . ...

Embodiment 3

[0023] Embodiment 3, the present invention can also be provided with ribs 6 on the outer wall of the upper half shell 1 or the lower half shell 2 . By setting the convex ribs 6, the heat dissipation area is increased and the effect is enhanced. The protruding ribs 6 are arranged axially to facilitate ventilation and heat dissipation. refer to Figure 1 to Figure 5 , and the rest are the same as the above-mentioned embodiment.

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Abstract

The invention relates to a transducer body for mines, which mainly solves the technical problems that the traditional anti-explosion transducer has poor heating dispatching effect and overlarge size. In the invention, an upper half shell (1) and a lower half shell (2) are fixedly connected in a sealing match into a cylindrical shell with two sealed ends; both cavities of the upper half shell (1) and the lower half shell (2) are in the shape of a half slot with end plates on the two ends; an explosion-suppression joint (9) is arranged between the connecting surfaces of the upper half shell (1) and the lower half shell (2); a connection cable through hole (7) is arranged on the wall of the upper half shell (1) or the lower half shell (2); and a through hole explosion-suppression joint (8) is arranged in the connection cable through hole (7). By adopting a runner design, a power component of a transducer is installed on the inner wall of the transducer body; easy heat-transmission and high-strength material is made into a cylindrical explosion-suppression body and the external diameter of the explosion-suppression body fits that of a muffling inner cylinder of a matched ventilator, which does not influence the ventilation of a runner; and the transducer body has small size and good heat dissipation effect and is mainly applied to all transducers.

Description

technical field [0001] The invention relates to a frequency converter speed regulating device used in ventilation equipment. Background technique [0002] Explosion-proof AC squirrel-cage motors are widely used in the electrical control of belt conveyors, scraper conveyors, fans, water pumps, and winches in coal mines in my country. Due to the simple control method, they are all directly controlled, which causes great damage to the motor and mechanical transmission. damage. In recent years, although thyristor AC step-down speed regulation technology has been used in some applications, due to the poor starting characteristics of the AC step-down soft starter itself, the impact on the power grid is large, and the capacity requirements for mobile substations are also large. occasions are limited. Mine-used inverters must have an explosion-proof enclosure, which must be able to withstand the explosion pressure of the internal explosive gas mixture and prevent the internal explo...

Claims

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Application Information

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IPC IPC(8): H02M1/00H05K5/00H02M1/12H05K7/02
Inventor 胡新明刘俊良郭昱罗梅林
Owner PINGAN ELECTRICAL
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