SU964757A1 - Explosion-proof electric apparatus - Google Patents

Description

(54) EXPLOSIVE ELECTRICAL APPLIANCE

BACKGROUND OF THE INVENTION The invention relates to electrical explosion-proof devices designed for remote control of electric drives and mechanisms located in explosive rooms of mines and chemical plants.

Known explosive electrical apparatus containing. camera inputs, disconnector and switching device, separated from each other by flameproof partitions with insoling clips 1.

Closest to the invention is explosion proof. the electrical apparatus, which contains the chambers of the inlets, the disconnector and the switching device, is separated from each other by flame-proof partitions with passable clampers;

However, the known devices have large dimensions and mass.

The aim of the invention is to reduce the size and weight of the apparatus.

This goal is achieved by the fact that in a blast-proof electrical apparatus containing a removable chamber of flange entries, a detachable chamber of a disconnector and a clamping chamber, separated from each other by explosion-proof partitions with pass-through clamps, the sockets of the input devices are fulfilled.

10 m and have flanges, while the chamber of the inlets is connected by its flange to the flange of the chambers of the disconnector, the killer of the inputs is located in the chamber of the disconnector, so that its flange is located 15 between the flange of the chamber of the disconnector and the flange of one of the sockets of the insertion device.

In addition, the switching chamber is made with an additional flange,

The 20 camera disconnector is located inside the switching chamber and connected) on its flange with an additional flange of the switching cameo.

Figure 1 shows a blasting apparatus 5, an electrical apparatus, viewed from the front in a section without a shake of the camera of the coccation apparatus; figure 2 -; view of the device with the extracted from it; camera input and input device sockets in fig.Z - the second option

device execution, front view in section, without cover of the switching device chamber; figure 4 - the case of the apparatus; figure 5 - camera conclusions; figure 6 - camera inputs with a disconnector; 7 - details of the camera inputs; Fig. 8 is the third embodiment of the apparatus, front view, section; figure 9 - details of the device, 1fig.8; in fig. 10 is a section A-A in FIG.

The explosion-proof electric apparatus comprises a camera 1 of inputs (FIG. 1), a camera 2 of the disconnector, a switching chamber 3, separated from each other by vaulted impermeable 4 and 5-partitions with pass-through clamps b and 7.

The camera 1 of the inputs is removable and connected by a flange 8 with the flange 9 of the chamber 2 of the disconnector. The sockets of the input devices 10 are made removable and are connected by a flange 11 to the flange 8 of the camera of the inputs. The disconnector 12 is fixed on the walls 13 and 14 of the camera 1 inputs. The walls 13-17 of the chamber 1 of the inlets forming the partition 4 are placed inside the chamber of the disconnector 2, and the flat flange 8 of the chamber of the 1 inlets is placed between the flange 9 of the ka, measure 2 of the disconnector and the flange 11 of the sockets 10.

The disconnector 12 is connected to the passage 4 and ea) chem 7 with flexible conductors 18.

When performing devices for large currents of 250-320 A, flexible conductors can be replaced with bus conductors 19 (Figs. 3.6 and 7) connected to passage clamps 7. Access to pass clamps 7 is provided by means of a cover 20 fixed to housing 21 The camera 22 of the conclusions made in the form of a node that is removable from the apparatus (Figures 3 and 5). Kctf iepa of the disconnector can be made detachable from the apparatus (Fig.8). In this case, all the walls 23 27 of the chamber 2 of the disconnector, forming the partition 5, are located inside of room 1 of the reduction chamber 3, and the flange 9 is connected to the additional flange 28 of the chamber 3.

In the apparatus of the jacks of the input devices 10, they serve as the cover of the camera 1 of the inputs. With this design of the camera inputs, its dimensions can be made minimal.

Since all the walls of the chamber of the inlets are located inside the chamber of the switching apparatus and are protected from shocks, the chamber of the inlets can be made of low-melting alloys or plastic, which will reduce the laboriousness of manufacturing the apparatus, its mass and cost.

Claims (2)

1. An explosion-proof electrical apparatus containing a removable chamber with flange bushings, a detachable chamber with a flange, a switching chamber and removable sockets for the input devices, each of which has a flange, these cameras are separated from each other by explosion-proof partitions with pass-through clamps, and the input chamber connected with its flange to the flange of the chamber of the disconnector, characterized by the fact that, in order to reduce overall dimensions and weight, the chamber of the inputs is located in the chamber of the disconnector so that its flange is located between the lance of the camera disconnector and the flange of one of the sockets of the input device. five . 2. The device according to claim 1, which is connected with the fact that the switching chamber is made with an additional: flange, the switch chamber is located inside the switching chamber and is connected by its flange to the additional flange of the switching chamber. . Sources of information taken BOi attention in the examination 1. USSR author's certificate No. 212351, cl. H 01 H 9/04, 1967. 2. Authors certificate of USSR 0 551719, cl. H 01 H 9/04, 1976. 5 2 12ff 9 8 and to 22 2 6 f 9 in ft FIG. 6 W And Fig 7