SU913468A1 - Explosion-tight electric apparatus - Google Patents

Description

The invention relates to a flameproof electrical apparatus intended for use in potentially explosive atmospheres of mines _ and chemical industries, namely ^e to flameproof controllers, magnetic starter.

Known explosion proof | θ

an electrical apparatus consisting of a chamber of inputs, a chamber of a switching device and a chamber of a disconnector separated from each other by partitions with pass-through clamps, a chamber. The disconnector is formed by the walls of the chamber of the terminals and the chamber of the switching device and the outer cover 111 and 12].

The presence of a large number of partitions with pass-through clamps increases the mass of the apparatus and creates difficulties in operation.

Closest to the proposed invention is an apparatus in which, as one of the walls 25

disconnector chambers - face applied base mating flange connection with one of the chambers of the flameproof apparatus.

Mounted on the indicated base 30

2

disconnector itself and feedthroughs £ 3].

However, due to the fact that the base was mated with only one camera, additional bushing clamps were required, which creates inconvenience in operation and increases the weight and size.

The purpose of the invention is to reduce the weight and size of the device, as well as improving operating conditions.

This goal is achieved due to the fact that in an explosion-proof electric apparatus consisting of a switching device chamber, an input chamber and a disconnector chamber, in which the end wall of the disconnector chamber is designed as a removable base, on which the disconnector is mounted and pass-through clamps and mates a cylindrical flange connection with the inlet chamber, on this Wall, an additional flange is made, the diameter of which is smaller than the diameter of the main flange, and through its face there are pass-through clamps for connecting a switching device, the switching device in the chamber wall holds {socket forming, with an additional

3

913468

four

flange additional flange connection.

FIG. 1 shows an apparatus assembled, cut; in fig. 2 apparatus with disconnector removed from it; FIG. 3 is a perspective view of the disconnector 5; in fig. 4-5 is the second embodiment of the apparatus.

The explosion-proof electric apparatus consists of a chamber of inputs 1 (Fig. 1), a camera of a switching device-10 of device 2 and a chamber of disconnector 3, separated from one another by partitions 4-6 with pass-through clamps 7. The chamber of disconnector 3 is formed by the walls of chamber inlets 1 and the chamber , 5 switching device and an external cover 8. Partitions 4 and 5 of the input chamber and switching device 2 with transitional e-clamp 7 placed on them, which are the walls of the chamber of disconnector 3, are made in the form of a removable cylindrical base 9 with two I have cylindrical flanges 10 and 11. Disconnector 12 is fixed directly on base 3.

If necessary, inspect the switch 12, it can be removed from the device together with the base 9 and the passage clamps 7, while pre-opening the key 8 and disconnecting the conductors from the passage clamps 7.

one

1

1

Claims (1)

Claims of the invention 'V-impermeable electric an apparatus containing a switching device chamber, an inlet chamber and an isolator chamber, the end wall of the isolator chamber being designed as a removable base, on which the isolator and pass-through clamps are installed, and is associated with a cylindrical flange connection with the inlet chamber, in order to reduce Weights and dimensions, as well as improved operating conditions, an additional cylindrical flange is made on the end wall of the disconnector chamber, the diameter of which is less than the diameter of the main cylindrical eskogo flange on the end of the cylindrical additional flange mounted clamps for connecting kommutatsiong Nogo device, wherein the formed socket, forming a cylindrical flange with an additional optional flange connection in a switching device chamber wall.