RU194564U1 - ELECTRIC CABINET WITH FRAME FRAME - Google Patents

Abstract

The utility model relates to the field of electrical engineering, namely, to the designs of electrical cabinets or panels with a metal frame frame used to house electrical equipment. An electric cabinet with a frame frame made of metal profiles of open section. Holes are made on the vertical plane of the transverse horizontal profiles of the frame frame, which are used to install cable entries in them or remain free for air ventilation, for which ventilation panels are mounted outside the frame to the outside of the frame. It is preferable that a bracket in the form of a U-shaped profile be fixed to the transverse horizontal profiles inside the frame frame opposite the installed cable entries. Several rectangular holes are made on one shelf of the profile, the dimensions and pitch of which are selected in such a way as to ensure the installation of known cable clamps manufactured by them in industry. Preferably, safety valves are installed inside the transverse horizontal profiles of the frame against the openings used for air ventilation. Safety valves are made in the form of a bent plate of thin metal with notches along the fold line. The valves are fixed at one end to the transverse horizontal profile, the plane of the other end forms an acute angle with the plane of the holes. The utility model allows you to create an electric cabinet with a frame frame, with a universal ability to place cable entries and ventilation panels on the upper and lower levels of the front and rear surfaces of the control cabinet. 2 s.p. f-ly, 6 ill.

Description

This utility model relates to the field of electrical engineering, namely, to the designs of electrical cabinets or panels with a metal frame frame used to house electrical equipment.

The prior art examples of electrical cabinets, consisting of a frame frame of profiles of any shape, and mounted on it walls, doors, various panels.

One of the typical tasks of enclosures with a frame frame is the placement of cable glands, panels for air ventilation and other devices in such a way as to ensure functionality, ease of installation and maintenance, as well as improve the use of usable space inside the enclosure.

For example, according to the patent for invention RU 2461933 C2, a control cabinet with a frame frame is known on which panels with ventilation holes can be installed. The frame frame can be mounted on a base fastened to the base, through which cables can be inserted into the control cabinet.

Also known is a control cabinet according to patent US 2019/0148921 A1 with a frame frame to which ventilation panels are fastened in front of the upper and lower parts. These panels are additionally equipped with valves protecting the operating personnel located outside the control cabinet from the effects of hot gases, flame and plasma emissions in the event of an accident during a short circuit inside the control cabinet.

The prototype of the claimed utility model is a telecommunication cabinet with air cooling according to patent RU 157202 U1 of 02/18/2015, consisting of a bottom and a roof connected through vertical profiles. The bottom and the roof are made in the form of a base with walls around the perimeter. Holes are made in the upper plane of the roof for installing cable glands; holes are made in the walls of the roof and bottom for installing removable modules - plugs, ventilation grilles or fan modules.

The location of the ventilation holes at the lowest and highest levels of the control cabinet, as in the prototype, increases the efficiency of air exchange inside. However, the location of the cable entries on the upper surface of the control cabinet is not always practical, it is often more convenient to use the vertical surfaces in the upper or lower parts of the cabinet to enter and output cables to the control cabinet.

The task to which the claimed utility model is directed is to create a control cabinet with a frame frame, with a universal possibility of placing cable entries and ventilation panels on the upper and lower levels of the front and back surfaces of the control cabinet.

The technical result is achieved due to the implementation of the control cabinet, consisting of a frame frame of open-section profiles (for example, C-shaped or G-shaped), and the walls, doors, panels attached to it. On the vertical plane of the transverse horizontal profiles (3) of the frame frame, holes (11) are made for installing cable entries (2).

Convenient for installation and maintenance, the location of cable entries (2) and / or ventilation panels (1) on the upper and lower levels of the front and rear surfaces of the control cabinet is achieved by placing functional holes (11) in the horizontal profiles (3) of the frame frame. In this case, the frame frame is installed directly on the base, without the use of such additional elements as the base, this reduces the material consumption and the complexity of manufacturing.

Universality of application is achieved due to the options for using holes (11) in the transverse horizontal profiles (3) of the frame frame. These holes are used either to install cable entries (2) in them, or to pass air through them. Cable entries (2) can be installed on the rear surface of the control cabinet below or above. To carry out the function of air ventilation, opposite to any lower and upper horizontal transverse profiles (3), ventilation panels (1) are attached to the frame from the outside; cable entries are not installed in these profiles.

The location of the holes for installing cable entries or ventilation in the horizontal profiles of the frame frame allows you to effectively use the interior space, the front and rear surfaces of the electrical cabinet.

In the places where cable entries (2) are installed, it is preferable to fasten the bracket (5) for installing cable clamps (6), which are widely used in control cabinets, to transverse horizontal profiles (3) inside the control cabinet. Such clamps are used for orderly and reliable fastening of cables in control cabinets; they prevent the cable from being disconnected due to mechanical stress or vibration. For example, you can use standard cable clamps that are commercially produced by RITTAL (ref. 7097.000, 7098.000 and the like) and DKC (codes R5CABF22, R5CABF42 and the like). The bracket (5) for installing cable clamps is made in the form of a U-shaped profile with several rectangular holes on one of the shelves. The dimensions of the holes are selected in such a way as to ensure reliable hooking of the cable clamps along the length (6), and to provide positioning of the protrusions of the plastic linings of the cable clamps along the width (7). The pitch of the holes is selected so as to ensure the installation of cable clamps (6) of different sizes.

If it is necessary to protect service personnel during a short circuit (9) in the electrical cabinet from ejecting hot gases, fire and plasma through the openings in the ventilation panels, it is preferable to install safety valves (8) directly inside the horizontal transverse profiles (3) of the frame frame, when exposed to pressure and shock wave (10) overlapping holes (11) in the profile. The safety valve (8) is made of thin metal in the form of a bent plate fixed with one edge to the transverse horizontal profile, the plane of the other edge forms an acute angle with the plane of the holes (11). The bend point of the plate is weakened by cuts along the bend line. When exposed to pressure and a shock wave, the plate bends, pressing against the surface of the profile (3) and blocking the holes (11).

This technical solution is illustrated by the following drawings:

in FIG. 1 shows an electric cabinet - general views of the front and rear;

in FIG. 2 presents a frame frame - a general view with a spaced ventilation panel and cable entries;

in FIG. 3 shows a section through a horizontal transverse profile with installation options for a ventilation panel and cable entry.

in FIG. 4 presents installation options for cable entries and ventilation panels on a control cabinet - side views, sectional view;

in FIG. 5 shows a frame frame with an arm for installing cable clamps: a general view from the inside, a view with spaced components, a section of a transverse horizontal profile;

in FIG. 6 shows a frame frame with installed safety valves: a general view from the inside, a section of a transverse horizontal profile with a valve in an open position, a section of a transverse horizontal profile with a valve in a closed position.

The figure 1 shows the control cabinet, and its main parts: walls, doors, panels, ventilation panels (1), cable entries (2).

Figure 2 shows a frame frame with a ventilation panel (1) and cable entries (2) spaced from it. On the frame frame shows the transverse horizontal profiles (3) and the holes in them (11).

Figure 3 shows a cross section of a transverse horizontal profile (3), a view with a fixed ventilation panel (1) and a view with a cable entry (2) installed in the hole (11).

The figure 4 shows the placement options for the cable entries (4) and ventilation panels in the electrical cabinet in a side view in section. The arrows indicate the movement of air in the electrical cabinet.

Figure 5 shows, in various views, the use of a bracket (5) for cable clamps (6) necessary for securing cables (4) in an electrical cabinet.

Figure 6 shows, in various views, the use of safety valves (8) for closing openings (11) in the event of a short circuit (9) in an electrical cabinet.

The utility model allows you to create an electric cabinet with a frame frame, with a universal ability to place cable entries and ventilation panels on the upper and lower levels of the front and rear surfaces of the control cabinet.

Claims (3)

1. An electric cabinet with a frame frame made of metal profiles of open section, characterized in that holes (11) are made on the vertical plane of the transverse horizontal profiles (3) of the frame frame, used to install cable entries (2) in them or remaining free for air ventilation , for which, opposite them, ventilation panels (1) are attached outside to the frame frame. 2. An electric cabinet according to claim 1, characterized in that to the transverse horizontal profiles (3) inside the frame, opposite the installed cable entries (2), a bracket (5) is fixed in the form of a U-shaped profile, on which one shelf several rectangular holes are made , the sizes and pitch of which are selected in such a way as to ensure the installation of cable clamps in them (6). 3. An electrical cabinet according to claim 1, characterized in that inside the transverse horizontal profiles (3) of the frame frame opposite the holes (11) used for air ventilation, safety valves (8) are installed, made in the form of a bent plate of thin metal with perforations along the fold line, fixed at one end to a transverse horizontal profile, the plane of the other end forms an acute angle with the plane of the holes (11).

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