CZ7120U1 - Mobile cell of electric appliances - Google Patents

Description

Technique Area

The technical solution relates to the construction of a mobile cell of electrical equipment for low and high voltage distribution, usable eg. to control the belt conveyor of bulk materials. For repeated economic activities, the solution can also be used for other operations such as sandpits, quarries, transportation of coal and soil, ashes from power plants and so on.

Background Art

Passport technology is the most widespread way of transporting bulk materials at open-cast mines. The previously used belt conveyor drive system consists of two separate high-voltage and low-voltage substations, which are located on both sides of the belt conveyor drive station.

The disadvantages of the known apparatuses are, in particular, that they are not mobile and that therefore their location cannot be changed. The need for a low-voltage and high-voltage mobile device proves to be very important, especially for plants using bulk conveyor belts. However, the need for mobile stations is also for securing the supply and distribution of electricity for buildings and the like.

The essence of the technical solution

The aforementioned purpose is achieved and the problem is solved by a mobile cell of electrical devices according to the technical solution, the principle of which is that the mobile cell base is formed by a self-supporting double floor frame carrying a housing for LV and HV devices, where the lower floor is provided with an insulating layer and the top floor is a mounting surface for LV and HV devices, with connecting and connecting cables running between the two floors. The self-supporting frame is mounted on the skids, the connecting cables being led out through the passages in the side wall of the frame. The self-supporting frame is provided with means for attachment to the drive station of the belt conveyor, wherein the connecting cables are led out through the passages in the lower floor. The mobile cell inner space is divided into three separate sections under closure, where the first part comprises the apparatus and apparatus of the distribution system, the second part the transformers and the third part the apparatus for the compensation of the asynchronous motors of the conveyor drive. The mobile cell is provided with a roof, the insulation of which consists of a layer of heat-insulating material, a double ceiling cassette filled with heat-insulating material, wherein there is an air gap between the layer of heat-insulating material and the ceiling cassettes.

The advantages of the mobile cell of the electrical devices according to the invention are in particular that the two separate MV and LV substations used so far are replaced by one mobile cell placed either directly on the belt conveyor drive station or mounted on the skids outside the power station and towed by heavy mechanisms behind the belt conveyor.

-1CZ 7120 Ul

The substation supply solution either from the bottom of the floor or the side of the frame, when the cell is placed on the skids, simplifies the production of the towing pontoon, reduces the center of gravity of the entire substation and thus increases the overall stability of the substation while towing.

BRIEF DESCRIPTION OF THE DRAWINGS

The technical solution is explained in more detail on the example of its practical implementation, which is shown in the attached drawing, in which a schematic representation of the mobile cell structure is shown in Fig. 1.

and

Example of execution

The mobile cell shown in the drawing has a base formed by a self-supporting frame 1 with a double floor 2, 3 on which the mobile cell technology itself is located. The double floor is formed by the bottom floor 2, which is watertight welded and the top floor 3, which is the mounting surface for LV and HV. The resulting space is thermally insulated and at the same time serves to lay connected and connecting cables.

The mobile cell located outside the belt conveyor is an integral part of the skid 4, on which the mobile cell is deployed along the bottom, towed by heavy mechanisms. The connecting cables are routed through the passages in the frame side wall.

The self-supporting frame 1 is provided with means for attaching it to the drive station, e.g., the lugs for attaching the tow ropes, wherein the connecting cables are guided through the passages in the bottom floor 2.

The mobile cell interior space is divided into three separate self-enclosed parts, where the first part comprises the distribution system apparatus and equipment, the second part the transformers and the third part the asynchronous motor compensation equipment. This solution also reduced the number of HV part fields. On the left side of the substation is a HV switchboard, insulated with air or insulating gas, assembled from 6 fields. The interior of each field is illuminated to assess the status of each device. On the right side of the substation there are devices for starting and regulating the drive motors. The purpose of this. ^f device is in particular the removal of the current and thus the torque shock when very heavy starting asynchronous motors. Furthermore, the elimination of other adverse effects occurring during the operation of the belt conveyor, such as the varying degree of rigidity of the waist, the manufacturing tolerances of the used drums and the driving stations, and others. The transformer compartment is separated from the above. For powering the substation, 2 transformers are used. The protection of transformers is carried out by means of switch disconnectors with fuses and automatic disconnection when fuse is blown. The third separate space is the compensation space for VN asynchronous motors. Compensation for the 5 and 5 HV switchgear is individual, using capacitors with discharge resistors inside the capacitors.

The mobile cell is provided with a roof 5, the insulation of which consists of a layer of heat-insulating material, a double ceiling cassette filled with heat-insulating material, wherein there is an air gap between the layer of heat-insulating material and the ceiling cassettes.

-2CZ 7120 Ul

Industrial usability

Mobile cell of electrical equipment for low and high voltage distribution can be used, for example, to control the belt conveyor of bulk materials. For repeated economic activities, the solution can also be used for other operations such as sandpits, quarries, transportation of coal and soil, ashes from power plants and so on.

Claims (5)

PROTECTION REQUIREMENTS Mobile low-voltage and high-voltage electrical equipment cell, characterized in that its base is a self-supporting frame (1) with a double floor carrying a housing for locating LV and HV devices, the lower floor (2) being provided with an insulating layer and an upper The floor (3) is the mounting surface for LV and MV devices, with connecting and connecting cables running in the interspace between the two floors (2, 3). Mobile cell of low and high voltage power distribution systems according to claim 1, characterized in that the self-supporting frame (1) is supported on the skids (4), the connecting cables being led out through the passages in the side wall of the frame (1). Mobile cell of low-voltage and high-voltage distribution devices according to claim 1, characterized in that the self-supporting frame (1) is provided with means for fastening to a conveyor belt drive station, the connecting cables being led out through the passages in the lower floor (2). 4. The mobile cell of the low and high voltage power distribution apparatus according to claims 1 to 3, wherein the interior of the mobile cell is divided into three separate parts under closure, the first part comprising the apparatus and equipment of the distribution system, the second part transformers and the third. part of the asynchronous motor compensation device of the conveyor drive. Mobile cell of low-voltage and high-voltage distribution devices according to claims 1 to 4, characterized in that the mobile cell is provided with a roof (5), the insulation of which is a layer of thermal insulation material, double ceiling cassettes filled with thermal insulation material. thermal insulation material and ceiling cassettes is an air gap.