Insulating device for cylinder sleeve of crust breaking cylinder of electrolytic cell

Abstract

The utility model relates to an insulating device for a crust-breaking cylinder sleeve of an electrolytic bath, which belongs to the technical field of crust-breaking cylinders and comprises a crust-breaking cylinder and a cylinder sleeve, the crust-breaking cylinder is fixed on the upper portion of the cylinder sleeve, an insulating sleeve is mounted at the bottom of the cylinder sleeve and sleeved on the cylinder sleeve, and a conical surface is arranged on the outer wall of the insulating sleeve. The electric field intensity is reduced, the electric field stress concentration is reduced, the insulation sleeve is prevented from being broken down due to too high electric field intensity, the creepage distance of the surface of the insulation sleeve is increased, and the insulation performance is improved. A through opening is formed in the center of the insulating sleeve, so that the crust breaking hammer head can pass through; the insulating sleeve is arranged at the bottom of the cylinder sleeve, and the outer wall of the insulating sleeve is provided with the conical surface, so that stress concentration of an electric field is reduced, and insulating performance is improved; the device can effectively isolate the electrolytic bath and the cylinder sleeve, prevent an electric shock accident caused by electrification of an equipment shell, reduce the influence of electromagnetic interference, and ensure that the cylinder can work stably and reliably.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of electrolytic cell crust breaking air cylinder sleeve insulation devices, belong to crust breaking air cylinder technical field. BACKGROUND

[0002] Electrolytic cell crust breaking air cylinder is an important component on electrolytic cell, which uses compressed air as power source, when compressed air enters the cylinder, it pushes the piston to move, thus driving the crust breaking hammer head connected with the piston to move up and down, to realize the impact on the shell surface of electrolytic cell, to break the crust layer of shell surface, to facilitate adding alumina and other raw materials into electrolytic cell.

[0003] Electrolytic cell crust breaking air cylinder is fixedly connected with truss beam of electrolytic cell through cylinder sleeve, electrolytic cell will pass through strong current when working, to realize the process of electrolyte decomposition and metal refining, and the bottom of cylinder sleeve is close to electrolytic cell and is conductor, sometimes current will be conducted through cylinder sleeve, resulting in that equipment shell is electrified, which will pose a threat to the safety of operator, and may cause electric shock accident, and strong magnetic field generated when electrolytic cell works will also cause electromagnetic interference to cylinder and other equipment, affecting the accuracy and stability of its action. SUMMARY

[0004] According to the above deficiencies in prior art, the technical problem to be solved by the utility model is to provide a kind of electrolytic cell crust breaking air cylinder sleeve insulation device, which can effectively isolate electrolytic cell and cylinder sleeve, prevent equipment shell from being electrified to cause electric shock accident, and reduce the influence of electromagnetic interference, to ensure that cylinder can work stably and reliably.

[0005] The utility model discloses a kind of electrolytic cell crust breaking air cylinder sleeve insulation devices, including crust breaking air cylinder and cylinder sleeve, crust breaking air cylinder is fixed on the upper portion of cylinder sleeve, insulating sleeve is installed at the bottom of cylinder sleeve, insulating sleeve is sleeved on cylinder sleeve, taper is equipped on the outer wall of insulating sleeve, the inclination angle α of taper is 10-30 °, to change the geometry of electric field concentration, make electric field distribution more uniform, to reduce electric field intensity, reduce electric field stress concentration, prevent insulating sleeve from being punctured due to electric field intensity being too high, while increasing the creepage distance of insulating sleeve surface, improve insulation performance;Insulating sleeve center is provided with through opening, to make crust breaking hammer head pass.

[0006] The technical scheme of the utility model provides a kind of electrolytic cell crust breaking air cylinder sleeve insulation device, insulating sleeve is installed at the bottom of cylinder sleeve, taper is equipped on the outer wall of insulating sleeve, to avoid electric field stress concentration, improve insulation performance.

[0007] Preferably, the insulating sleeve comprises a nylon layer and a polyimide layer, the nylon layer is sleeved outside the polyimide layer, and the nylon layer and the polyimide layer are integrally formed through a hot pressing process; the nylon layer outside is used for rapid heat dissipation to delay aging, and the polyimide layer inside is used for improving resistivity to prevent electric field breakdown.

[0008] Preferably, the outer wall of the nylon layer is provided with fins for further changing the situation of electric field concentration and reducing electric field strength.

[0009] Preferably, the inner wall of the polyimide layer is provided with a step, and the step is attached to the bottom of the cylinder sleeve after installation.

[0010] Preferably, the inner wall of the polyimide layer is further provided with a plurality of adhesive rings arranged in an array, which are used for being attached to the cylinder sleeve after being coated with an adhesive to increase the mechanical strength after being attached.

[0011] Preferably, a universal joint is installed on the cylinder rod of the crust breaking cylinder, and the cylinder rod is movably connected to the crust breaking hammer head through the universal joint.

[0012] The utility model has the beneficial effects compared with the prior art:

[0013] The electrolytic tank crust breaking cylinder sleeve insulation device disclosed by the utility model installs an insulating sleeve at the bottom of the cylinder sleeve, and the outer wall of the insulating sleeve is provided with a conical surface to reduce electric field stress concentration and improve insulation performance; the utility model can effectively insulate the electrolytic tank and the cylinder sleeve, prevent electric shock accidents caused by electrification of the equipment shell, reduce the influence of electromagnetic interference, and ensure that the cylinder can work stably and reliably. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 is the structural schematic diagram of the utility model;

[0015] Fig. 2 is the sectional view of the utility model;

[0016] Fig. 3 is the perspective view of the insulating sleeve.

[0017] In the drawing: 1, crust breaking cylinder; 2, cylinder sleeve; 3, crust breaking hammer head; 4, insulating sleeve; 41, nylon layer; 411, fin; 412, conical surface; 42, polyimide layer; 421, adhesive ring; 422, step; 5, universal joint. DETAILED DESCRIPTION

[0018] The utility model will be further described in combination with specific embodiments.

[0019] However, the description of the utility model is only an embodiment of structural and even functional description, and the scope of the utility model is not limited by the embodiments described in the text.

[0020] For example, multiple embodiments may have various modifications and forms, and it should be understood that the scope of this utility model includes equivalents that can realize the technical concept.

[0021] like Figs. 1-3 As shown, this embodiment is achieved through the following technical solution: it includes a shell-breaking cylinder 1 and a cylinder sleeve 2. The shell-breaking cylinder 1 is fixed to the upper part of the cylinder sleeve 2. An insulating sleeve 4 is installed at the bottom of the cylinder sleeve 2. The insulating sleeve 4 is sleeved on the cylinder sleeve 2. The outer wall of the insulating sleeve 4 is provided with a conical surface 412. The inclination angle α of the conical surface 412 is 20° to change the geometry of the electric field concentration point, so that the electric field distribution is more uniform, thereby reducing the electric field strength, reducing the electric field stress concentration, preventing the insulating sleeve 4 from being broken down due to excessive electric field strength, and increasing the creepage distance on the surface of the insulating sleeve 4 to improve the insulation performance. The insulating sleeve 4 has a through opening in the center to allow the shell-breaking hammer head to pass through.

[0022] In this embodiment, the insulating sleeve 4 includes a nylon layer 41 and a polyimide layer 42. The nylon layer 41 is sleeved on the outside of the polyimide layer 42. The nylon layer 41 and the polyimide layer 42 are integrally formed by hot pressing. The outer nylon layer 41 dissipates heat quickly and delays aging, while the inner polyimide layer 42 increases resistivity and prevents electric field breakdown.

[0023] The outer wall of the nylon layer 41 is provided with fins 411 to further alter the electric field concentration and reduce the electric field strength. The inner wall of the polyimide layer 42 is provided with steps 422, which, after installation, fit snugly against the bottom of the cylinder sleeve 2. The inner wall of the polyimide layer 42 is also arrayed with several adhesive rings 421 for bonding to the cylinder sleeve 2 after applying adhesive, increasing the mechanical strength after bonding. A universal joint 5 is installed on the cylinder rod of the shell-breaking cylinder 1, and the cylinder rod is movably connected to the shell-breaking hammer head 3 through the universal joint 5.

[0024] By installing the insulating sleeve 4, the electrolytic cell and the cylinder sleeve 2 can be effectively isolated. The conical surface 412 and the fins 411 of the insulating sleeve 4 can make the electric field distribution more uniform, avoid electric field stress concentration, and improve the insulation performance.

[0025] Of course, the above description is only a preferred embodiment of this utility model and should not be considered as limiting the scope of the embodiments of this utility model. This utility model is not limited to the above examples, and all equivalent changes and improvements made by those skilled in the art within the scope of this utility model should be included in the patent coverage of this utility model.

Claims

1. An insulating device for the sleeve of an electrolytic cell shell-breaking cylinder, characterized in that, The device includes a shell-breaking cylinder (1) and a cylinder sleeve (2). The shell-breaking cylinder (1) is fixed to the upper part of the cylinder sleeve (2). An insulating sleeve (4) is installed at the bottom of the cylinder sleeve (2). The insulating sleeve (4) is fitted onto the cylinder sleeve (2). The outer wall of the insulating sleeve (4) is provided with a conical surface (412). The inclination angle α of the conical surface (412) is in the range of 10-30°. The insulating sleeve (4) has a through opening in the center. The insulating sleeve (4) includes a nylon layer (41) and a polyimide layer (42). The nylon layer (41) is fitted onto the outside of the polyimide layer (42).

2. The electrolytic cell shell-breaking cylinder sleeve insulation device according to claim 1, characterized in that, The outer wall of the nylon layer (41) is provided with fins (411).

3. The electrolytic cell shell-breaking cylinder sleeve insulation device according to claim 1, characterized in that, The inner wall of the polyimide layer (42) is provided with a step (422), and the step (422) is attached to the bottom of the cylinder sleeve (2).

4. The electrolytic cell shell-breaking cylinder sleeve insulation device according to claim 3, characterized in that, The inner wall of the polyimide layer (42) is also provided with an array of several adhesive rings (421).

5. The insulating device for the shell-breaking cylinder sleeve of the electrolytic cell according to claim 1, characterized in that, The cylinder rod of the shell-breaking cylinder (1) is equipped with a universal joint (5), and the cylinder rod is movably connected to the shell-breaking hammer (3) through the universal joint (5).

Images