Cable connection device and explosion-proof electric control box

Abstract

The invention provides a cable connection device which is used for an explosion-proof electric control box. The cable connection device comprises a connection part, a sealing ring and a fixation part, wherein a first through hole is formed on the connection part; a second through hole is formed on the fixation part; and in the explosion-proof electric control box, a cable penetrates through the first through hole, the second through hole and a protection plate in the explosion-proof electric control box respectively; the first through hole is a step hole; the sealing ring is arranged on the part with a large inner diameter in the first through hole; the fixation part is detachably connected to one end of the connection part and used for tightly pressing the sealing ring on steps in the step hole, and the other end of the connection part stretches in the through hole of the protection plate and is detachably connected with the protection plate. The cable connection device provided by the invention cannot damage the electric control box during installation because welding is not needed, installation for devices such as an elbow and dragging for the cable are more convenient, and the cable connection device has no need to be installed on the electric control box during a bulge test, so that the damage of the bulge test on the cable connection device is avoided. The invention further provides the explosion-proof electric control box.

Description

technical field [0001] The invention relates to the field of explosion-proof devices, in particular to a cable connection device and an explosion-proof electric control box. Background technique [0002] Pressurization refers to the use of high-pressure water flow to flush the explosion-proof equipment to test the tightness of the solder joints on the explosion-proof equipment. [0003] The structure of the explosion-proof electric control box is as follows: figure 1 As shown, the picture shows a larger chamber of the electric control box, and there is a smaller chamber behind the electric control box. In actual use, the cable will pass through the protective plate from the smaller chamber at the back 91 into the larger chamber that can be seen in the figure. Due to explosion-proof requirements, it is necessary to seal the portion of the through hole on the guard plate 91 passing through the cable after the cable passes through the guard plate 91 . In existing related tec...

AI Technical Summary

Problems solved by technology

[0005] 1) Since the Unicom joint is welded on the electric control box, it is easy to damage and deform the electric control box during welding;

[0006] 2) The Unicom joint is easily damaged under high-pressure water flow when pressing;

[0007] 3) When installing elbows and other devices and pulling cables, since the connecting joint has been welded to the guard plate, it is equivalent to operating the entire electric control box, which is not convenient enough;

[0008] 4) Due to the need to block the through hole on the guard plate during pressing, but the through hole is welded with a joint joint, forming a raised structure, which is difficult to block. In practice, it is often used to block when pressing The tooling of the through hole is punched open, which reduces the efficiency of the test

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