DE1964271U - PRESSURE-RESISTANT LIFTING DOOR FOR CONTROL CABINET. - Google Patents

Description

RA.2Gif 690 * 1 i5.67

-. ■ COICOEHA

Maschinen.- und Elektrizitätsgesellschaft m.b.H. Stuttgart - O, IaIstrasse 41

Stuttgart, May 12, 1967

Pressure-resistant lifting door for safety barrier

In the electricity industry has been under construction. of medium voltage switchgear In the course of the last few years, in addition to brick-built switching cells, the sheet steel encapsulated construction with built-in or extendable in control cabinets Sehaltgeräte enforced. Their use is more universal and they are space-saving and cheaper because they are factory-made get delivered. A switching rank is when Arc through earth faults, short circuits or double earth faults within the cell or in the cable duct exposed to strong dynamic and thermal stresses, as the hot Mehlbogengases create an overpressure « The protection of the operating and maintenance team requires an appropriate construction * The control cabinet To build pressure-resistant yourself is not too difficult. To the Pressure relief valves are used to relieve the pressure in the cells built in, the first Seheitel value of the overpressure

- 2nd

- Escape occurring in the seheitel value of the first short-circuit half-wave let, but then close again immediately and thereby the cell again before reaching the second pressure peak value, in the peak value of the second short-circuit half-wave claim to overpressure. The pressure relief flaps open in good time before the second pressure peak value is reached again, nevertheless, the switching rank must also be at flawless pressure relief must be built in such a way that it can withstand a certain pressure load. Due to the explosive temperature, the pressure rises suddenly, so that the walls and yours, even with the best pressure relief are heavily used »Well-known designs of pressure-resistant doors meet the requirements for security for the Staff, but are generally too expensive.

The furnace described below meets the requirements for mechanical and thermal protection and inexpensive construction in such a way that a steel door that is bevelled on all sides is designed as a lift-and-turn door to close the switchgear cabinet and provided with a lift-and-turn fitting with a foldable hand lever and with locking pins on the opposite side is, which engage in the (door frame arranged locking housing, and arranged on the back of two transverse profiles) are that grip behind cross struts of the door frame in the closed position. i

To make the door free of twisting and bending, you can on its back, in a known manner, additional cross struts or stiffeners are provided. It is also useful to have a cylinder lock on the lift-turn fitting to prevent unauthorized access to the cell close,,

The cabinet door designed as a lift-and-turn door according to the innovation is easy to assemble and, above all, cheap because all parts are off-the-shelf goods. The bending up of the upper or lower

Part of the door when the Closet, where the effect of the lock is absent, is prevented by the cross profiles of the door reaching behind the cross struts of the door frame. Operator safety is given on every pail.

The subject of the furnace is shown in a drawing using one illustrated embodiment explained. Show it :

Pig.1 - the front view of the viewing arm door

Pig. 2 - a longitudinal section

Pig «, 3 - the rear view

Pigο4 - enlarged sections.

The steel door 2 is in the door frame 1 of the switch cabinet suspended and designed by means of the lift-and-turn fitting 3 with a foldable lever 4 as a lift-and-turn door. On the other side are the locking pins 5 and 6 on the back the door arranged, which cooperate with the locking housings 7 and on the door frame. The steel door 2 is folded all around. This fold 9 is directly when the door is closed on the Z-profile 10 of the door frame. On the back of the The two angled transverse profiles 11 and 12 are arranged on the door. In the closed position, the profile 11 engages behind the cross strut 13 on the door frame, while the profile 12 engages behind the leg 14 of the door frame profile, above the lever 4 sits a cylinder lock 15 j that unauthorized opening of the Door prevented. A knob 16 is used to open the door.

The door is opened after the cylinder lock 15 opened by swiveling the hand lever 4 down by 180 °. The door is raised as a lifting door so that the Lock pins 5 and 6 from lock housings 7 and 8 and the engaging transverse profiles 11 and 12 are released. Pulling the knob 16 opens the door opened in a twisting motion. When closing the door is

-4-

the course a -. reversed. Compartment pivoting the door get through the locking pin and the transverse profiles swinging up the hand lever engages as the door is lowered in the process. The cylinder lock is locked, so that by removing the key unauthorized access is prevented.

If necessary, of course, instead of two, several Interlocks are provided. Likewise, the door can be made even more rigid by additional hateful measures.

CQNCOF. CIA

Maschinen- u. Elektriziiätsgesallschaft mb H.

Claims (3)

CA. 264 690 * 5/13/67 ΟΟΗΌΟΚρίΑ Maschinen- und Elektrizitätsgesellschaft nub "Ξ. Stuttgart - O, Talstrasse. 41 Protection claims 1) Flameproof lifting door for sheet steel encapsulated high-voltage switch cabinets, characterized, that a steel door (2) folded on all sides is designed as a lift-and-turn door and with a Lift and turn fitting (3) with foldable hand lever (4) and on the opposite side with locking pins (5 and 6) is provided, which is arranged in the lock housing on the door frame (7 and 8) engage, and on the back of which two transverse profiles (11 and 12) are arranged, the in the closed position, grip behind cross struts (13 and 14) of the door frame, 2) lifting door according to claim 1, characterized ge k e η η ζ e i c h η e t that they are provided with cross struts or stiffeners known per se on the back is. 3) Lifting door according to claim 1 and 2, characterized in that on the lift-turn> fitting (3) a cylinder lock (15) is arranged «, CONCORDlA MaseWnen- u. EiekiTizitätageaeHaehaft m.b.H.