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 ex

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

Example Embodiment

[0021] In embodiment 1, the present invention consists of the upper half-shell 1 and the lower half-shell 2 in a sealed fit and solid connection to form a cylindrical shell with closed ends. 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 in the shape of semi-circular grooves with end plates at both ends. The connecting surface of the upper half-shell 1 and the lower half-shell 2 is separated The blast joint surface 9 is provided with a connection cable through hole 7 on the wall of the upper half shell 1 or the lower half shell 2. The connection cable through hole 7 can be a screw hole, and the connection cable through hole 7 is provided with a through hole 7 Hole explosion-proof surface 8. See Figure 1 to Figure 5 . It can be made into a cylindrical flameproof body from materials with easy heat transfer and high strength, such as cast iron, cast...

Example Embodiment

[0022] In Embodiment 2, the present invention can also be provided with a filter mounting bracket 4 near the joint 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 inside around the flameproof enclosure of the device, and use the air flow of a fan or local fan to forcefully cool the frequency conversion speed control device. It has been tested and verified by the prototype experiment, and 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 mine i...

Example Embodiment

[0023] In Embodiment 3, the present invention may also be provided with ribs 6 on the outer wall of the upper half-shell 1 or the lower half-shell 2. The ribs 6 are provided to increase the heat dissipation area and enhance the effect. The ribs 6 are arranged along the axial direction to facilitate ventilation and heat dissipation. See Figure 1 to Figure 5 , The rest is the same as the above 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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