Electrolytic bath portal frame insulation value detection device

Abstract

The utility model discloses an electrolytic bath portal frame insulation value detection device, which comprises an insulation resistance meter body, a shielding box is arranged outside the insulation resistance meter body, one side surface of the shielding box is provided with a wiring hole matched with a wiring post of the resistance meter body, and the other side of the shielding box is provided with an avoiding hole corresponding to a rocking handle of the resistance meter body; the top surface of the shielding box is provided with a shielding box cover, and the shielding box cover is provided with an observation window matched with the display screen of the resistance meter body. The device is simple in structure, low in cost, convenient to install and high in magnetic field shielding reliability, insulation resistance measurement data distortion caused by magnetic field influence can be effectively avoided, and the electrolytic bath electricity crossing risk caused by electrolytic bath insulation failure is reduced. The shielding box is formed by welding and splicing recyclable waste iron plates, so that the utilization rate of waste steel is improved, and the shielding box has good economic practicability.

Description

Technical Field

[0001] The utility model relates to a detection device for the insulation value of an electrolytic cell gantry, belonging to a shielding device for a resistance measuring tool used in an electrolytic aluminum plant building. Background Art

[0002] The power consumption of aluminum electrolysis accounts for about 40% of the cost. Reducing the ineffective loss of electric energy is one of the important ways to effectively control the power consumption cost. During the aluminum electrolysis production process, maintaining the insulation of the electrolytic cell is a common means to effectively control the power consumption, avoid the cross-current of the electrolytic cells, and ensure the stable operation of the electrolytic cells. Currently, an insulation resistance meter is usually used to measure the insulation value of the electrolytic cell gantry to determine whether the electrolytic cell is insulated. However, the measurement of the insulation value of the electrolytic cell has always been a technical problem in this industry, mainly manifested in the inaccurate measurement data of the insulation resistance value. Because the magnetic field in the electrolytic aluminum plant building is relatively large, the traditional insulation resistance meter will affect its measurement accuracy when used in a magnetic field environment, and in severe cases, the insulation resistance meter will be burned out. Content of the Utility Model

[0003] In view of this, the purpose of the utility model is to provide a detection device for the insulation value of an electrolytic cell gantry to at least solve the problems mentioned in the background art.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A detection device for the insulation value of an electrolytic cell gantry includes an insulation resistance meter body. A shielding box is arranged outside the insulation resistance meter body. One side surface of the shielding box is provided with a wiring hole adapted to the wiring terminal of the resistance meter body, and the other side is provided with an avoidance hole corresponding to the crank of the resistance meter body; a shielding box cover is arranged on the top surface of the shielding box, and an observation window adapted to the display screen of the resistance meter body is opened on the shielding box cover.

[0006] Further, the shielding box cover is connected to the shielding box through a hinge structure.

[0007] Further, the shielding box is a rectangular box formed by welding and splicing a plurality of steel plates.

[0008] Further, the steel plate is a waste iron plate with a thickness of 3 - 5 mm that can be recycled.

[0009] Further, the shielding box is formed by splicing lightweight plastic or aluminum alloy plates, and a composite electromagnetic shielding coating is arranged inside the shielding box.

[0010] Further, a handle for facilitating the handling of the shielding box is also arranged on the shielding box.

[0011] Further, the handle is a U-shaped steel bar, and the U-shaped steel bar is rotationally connected to the side surface of the shielding box through a hinge shaft.

[0012] Furthermore, the U-shaped steel bars are formed by cutting and bending recyclable steel bars with a diameter of φ2 - φ4 mm.

[0013] Furthermore, insulating rubber pads are provided on the inner side wall of the shielding box.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] The structure of the present utility model is simple, the cost is low, the installation is convenient, the reliability of magnetic field shielding is high, it can effectively avoid the distortion of insulation resistance measurement data caused by magnetic field influence, and reduce the risk of electrolytic cell series electricity caused by the insulation failure of the electrolytic cell. The shielding box is welded and assembled with recyclable waste iron plates, which improves the utilization rate of waste steel and has good economic practicability.

[0016] Other advantages, objectives and features of the present utility model will be described to some extent in the subsequent specification, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained through the following specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings, where:

[0018] Figure 1 is the structural schematic diagram of the present utility model Figure 1 ;

[0019] Figure 2 is the structural schematic diagram of the present utility model Figure 2 .

[0020] In the figure: 1. Insulation resistance meter body; 101. Display screen; 102. Terminal; 103. Crank; 2. Shielding box; 201. Wiring hole; 202. Avoidance hole; 3. Shielding box cover; 301. Observation window; 4. Hinge structure; 5. Handle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only partial embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] Embodiment 1

[0023] As Figure 1 - Figure 2 shown, an insulating value detection device for the electrolytic cell gantry includes an insulation resistance meter body 1. The insulation resistance meter body 1 has not changed compared to the insulation resistance meters that can be purchased on the existing market. Preferably, it is a ZC25-3 type insulation resistance meter. The top of the ZC25-3 type insulation resistance meter is provided with a display screen 101, a terminal 102 is provided on one side, and a crank 103 is provided on the other side. A shielding box 2 is provided outside the insulation resistance meter body 1. A wiring hole 201 adapted to the terminal 102 of the resistance meter body is provided on one side surface of the shielding box 2, and an avoidance hole 202 corresponding to the crank 103 of the resistance meter body is provided on the other side. A shielding box cover 3 is provided on the top surface of the shielding box 2, and an observation window 301 adapted to the display screen 101 of the resistance meter body is opened on the shielding box cover 3. When performing insulation measurement, place the ZC25-3 type insulation resistance meter in the shielding box 2. The grounding and line terminals of the ZC25-3 type insulation resistance meter are opposite to each other from the position of the wiring hole 201, and the crank of the ZC25-3 type insulation resistance meter extends out from the avoidance hole 202. Connect the measurement points of the electrolytic cell gantry to the grounding and line terminals of the ZC25-3 type insulation resistance meter respectively through measurement cables. Rotate the crank at a speed of 120 revolutions per minute, and the display screen 101 can be viewed through the observation window 301 until the reading is stable, then the resistance value can be measured.

[0024] The shielding box cover 3 is connected to the shielding box 2 through a hinge structure 4, so that the shielding box cover 3 can be opened or closed through the hinge structure 4.

[0025] The shielding box 2 is a rectangular box formed by welding and splicing several steel plates. Specifically, the shielding box 2 is a rectangular box formed by cutting and welding recycled waste iron plates with a thickness of 3-5 mm.

[0026] A handle 5 for facilitating the handling of the shielding box is further provided on the shielding box 2.

[0027] The handle 5 is a U-shaped steel bar. The U-shaped steel bar is rotatably connected to the side surface of the shielding box 2 through a hinge shaft. The U-shaped steel bar is formed by cutting and bending recycled steel bars with a diameter of φ2 - φ4 mm.

[0028] Insulating rubber pads are provided on the inner side wall of the shielding box 2, which can protect the insulation resistance meter body 1 from being easily knocked and damaged.

[0029] Embodiment 2

[0030] On the basis of Embodiment 1, the shielding box 2 can also be formed by splicing lightweight plastics or aluminum alloy plates, and a composite electromagnetic shielding coating is provided inside the shielding box 2, which is more lightweight and easy to carry.

[0031] The above are only the preferred embodiments of the present utility model, and do not impose any form of confidentiality restrictions on the present utility model. Any simple modifications, equivalent changes, and decorations made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. An insulating value detection device for the electrolytic cell gantry, characterized in that, It includes an insulation resistance meter body (1), and a shielding box (2) is provided outside the insulation resistance meter body (1). One side surface of the shielding box (2) is provided with a wiring hole (201) adapted to the wiring terminal (102) of the resistance meter body, and the other side is provided with an avoidance hole (202) corresponding to the crank (103) of the resistance meter body; a shielding box cover (3) is provided on the top surface of the shielding box (2), and an observation window (203) adapted to the display screen (101) of the resistance meter body is opened on the shielding box cover (3).

2. The electrolytic cell gantry insulation value detection device according to claim 1, characterized in that The shielding box cover (3) is connected to the shielding box (2) through a hinge structure (4).

3. The electrolytic cell gantry insulation value detection device according to claim 1, characterized in that, The shielding box (2) is a rectangular box formed by welding and splicing several steel plates.

4. The electrolytic cell gantry insulation value detection device according to claim 3, characterized in that The steel plate is a waste iron plate with a thickness of 3 - 5 mm that can be recycled.

5. The electrolytic cell gantry insulation value detection device according to claim 1, characterized in that, The shielding box (2) is formed by splicing lightweight plastic or aluminum alloy plates, and a composite electromagnetic shielding coating is provided inside the shielding box (2).

6. The insulation value detection device for the electrolytic cell gantry according to claim 1, wherein, A handle (5) for facilitating the handling of the shielding box is further provided on the shielding box (2).

7. The electrolytic cell gantry insulation value detection device according to claim 6, characterized in that, The handle (5) is a U-shaped steel bar, and the U-shaped steel bar is rotatably connected to the side surface of the shielding box (2) through a hinge shaft.

8. The electrolytic cell gantry insulation value detection device according to claim 7, characterized in that, The U-shaped steel bar is formed by cutting and bending a recyclable steel bar with a diameter of φ2 - φ4 mm.

9. The electrolytic cell gantry insulation value detection device according to any one of claims 1-8, characterized in that, Insulating rubber pads are provided on the inner side wall of the shielding box (2).

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