Insulating cylinder of solid-sealed polar pole

Abstract

The utility model relates to the technical field of electrical elements, and provides a solid-sealed polar pole insulating cylinder which is long in service life and safe in high-altitude use, and comprises a sleeve cylinder, the sleeve cylinder comprises a cylinder body, an extrusion wall is arranged on the inner wall of the cylinder body, and a pressure sheet is arranged between the cylinder body and the extrusion wall. The inner wall of the cylinder body is also provided with a plurality of hot melting fixing columns of which the end parts penetrate through the extrusion wall, after the solid-sealed polar pole is heated and expanded, the extrusion wall is extruded and expanded outwards, the expansion pressure is absorbed through elastic deformation generated by the pressure sheet, and meanwhile, the end parts of the hot melting fixing columns are matched with the solid-sealed polar pole to be in hot melting connection, so that the firm connection between the insulating cylinder and the solid-sealed polar pole is kept.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical components, in particular to a solid-sealed pole insulating cylinder. Background Art

[0002] The sealed pole is formed by embedding the vacuum interrupter and the conductive parts related to the circuit breaker into easily solidified solid insulating materials such as epoxy resin or thermoplastic materials, so that the entire circuit breaker becomes an integral component. The sealed pole is modularly designed with a simple structure and fewer detachable parts, thus having high reliability. At the same time, it has extremely high insulating rod capacity and reduces the size of the circuit breaker, which is conducive to the miniaturization of electrical equipment such as switch cabinets.

[0003] When the sealed pole is in use, an insulating tube is installed outside the sealed pole to enhance the insulation performance of the side of the sealed pole. The insulating tube is installed on the outer wall of the sealed pole, which can not only make the appearance of the sealed pole more beautiful, but also greatly improve the anti-puncture ability, making the use of the sealed pole safer.

[0004] Although the above-mentioned prior art can solve the corresponding technical problems, it still has certain defects: after the sealed pole is energized, it will generate a certain amount of heat due to its large resistance, and then expand due to the thermal expansion and contraction effect during use, and shrink after cooling, which causes the insulating tube to be repeatedly squeezed by the expansion force, which can easily cause fatigue of the insulating tube and thus cause cracking. Not only does it shorten the service life of the insulating tube, but the insulating tube sleeved outside the sealed pole can also easily fall off the sealed pole after cracking. If the sealed pole is used in a higher position, it can also easily cause falling objects from high altitude, posing a safety hazard. Utility Model Content

[0005] The utility model aims to provide a solid-sealed pole insulating cylinder with a long service life and safe high-altitude use in view of the defects and shortcomings of the prior art.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an insulating cylinder for a sealed pole, comprising a sleeve cylinder, the sleeve cylinder comprising a cylinder body, an inner wall of the cylinder body is also provided with an extrusion wall, a pressure plate is provided between the cylinder body and the extrusion wall, and the inner wall of the cylinder body is also provided with a plurality of hot-melt fixing columns whose ends penetrate the extrusion wall. After the sealed pole is heated and expanded, the extrusion wall is squeezed outward and elastically deformed through the pressure plate to absorb the expansion pressure, and at the same time, the end of the hot-melt fixing column is hot-melt-connected with the sealed pole to maintain a firm connection between the insulating cylinder and the sealed pole.

[0007] A further improvement is that a reinforcement ring is also provided on the outer wall of the end of the cylinder.

[0008] A further improvement is that the hot melt fixing column includes a lower supporting block fixedly connected to the inner wall of the cylinder and a hot melt head arranged at one end of the lower supporting block and penetrating the extrusion wall.

[0009] A further improvement is that a stabilizing plate is provided between the lower supporting block and the inner wall of the cylinder.

[0010] A further improvement is that a plurality of compression racks are provided between the lower supporting block and the hot melt head.

[0011] A further improvement is that a limiting piece is provided at one end of the lower supporting block close to the compression frame.

[0012] A further improvement is that the hot melt head is a bullet-shaped block structure made of hot melt adhesive material.

[0013] A further improvement is that an elastic shielding sheet is provided at the end of the cylinder above the pressure sheet.

[0014] After adopting the above technical scheme, the beneficial effect of the utility model is as follows: after the utility model is installed, when the sealed pole generates thermal expansion, the expansion pressure can be absorbed by the extrusion wall, and it can be expanded outward to separate the extrusion pressure plate, thereby converting the outward expansion force into elastic force. While absorbing the outward expansion pressure, the extrusion wall is squeezed and attached to the surface of the sealed pole by the elastic force, thereby simultaneously enhancing the fixing and fitting effect. At the same time, when the sealed pole is installed, the outer surface of the sealed pole and the hot-melt fixing column rub against each other to generate heat, causing the hot-melt adhesive to melt, and after condensation, it firmly adheres to the sealed pole, thereby greatly enhancing the anti-slip effect. When used at high altitude, it is not easy to fall off from the sealed pole, and has good safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the insulating cylinder of the utility model;

[0017] Figure 2 It is a structural schematic diagram of a front view cross section of the insulation tube of the utility model;

[0018] Figure 3 It is a structural schematic diagram of a front view cross section of a hot-melt fixing column of the utility model. DETAILED DESCRIPTION

[0019] The utility model is now further described in conjunction with the accompanying drawings and specific embodiments.

[0020] See also Figure 1-3 As shown, the technical solution adopted in this specific embodiment is: an insulating cylinder for a solid-sealed pole, comprising a sleeve cylinder 1, the sleeve cylinder 1 comprising a cylinder body 11, the inner wall of the cylinder body 11 is further provided with an extrusion wall 13, a pressure sheet 12 is provided between the cylinder body 11 and the extrusion wall 13, the inner wall of the cylinder body 11 is further provided with a plurality of hot-melt fixing columns 14 whose ends penetrate the extrusion wall 13, and fourteen of them are provided in this embodiment, the hot-melt fixing columns 14 comprise a lower supporting block 142 fixedly connected to the inner wall of the cylinder body 11 and a hot-melt head 145 arranged at one end of the lower supporting block 142 and penetrating the extrusion wall 13, after the solid-sealed pole heats up and expands, the extrusion wall 13 is squeezed outward and elastically deformed by the pressure sheet 12 to absorb the expansion pressure, and at the same time, the end of the hot-melt fixing column 14 is hot-meltedly connected with the solid-sealed pole to maintain a firm connection between the insulating cylinder and the solid-sealed pole, when in use, the solid-sealed pole is inserted into the sleeve cylinder 1, and the insertion speed is fast. The faster the better. When inserting, the outer wall surface of the sealed pole and the hot melt head 145 will rub against each other, and then the friction will generate heat, causing the hot melt head 145 to melt, and then the hot melt will produce fluidity and adhere to the outer surface of the sealed pole. After the sealed pole is installed, the hot melt head 145 is attached to the surface of the sealed pole in a large area after hot melting, and the entire sleeve tube 1 is adhered to the outer surface of the sealed pole through the hot melt colloid, which greatly improves the connection strength between the sealed pole and the insulating tube. At the same time, when the sealed pole is heated and expanded during operation, the lateral pressure generated by the expansion is output to the pressure plate 12 through the extrusion wall 13 to expand and squeeze it outward, so that the pressure plate 12 is deformed to absorb the lateral pressure, and converted into elastic force to output to the pressure plate 12, so as to prevent the cylinder 11 from being damaged by fatigue caused by repeated expansion and contraction. At the same time, the pressure applied to the outer wall of the sealed pole by the extrusion wall 13 is greater through the elastic force, so as to further prevent the insulating tube from falling off.

[0021] The outer wall of the end of the cylinder 11 is also provided with a reinforcing ring 2, which is beneficial to enhance the anti-cracking performance of the end, thereby obtaining a higher strength of the cylinder 11;

[0022] A stabilizing plate 141 is provided between the lower support block 142 and the inner wall of the cylinder 11, which is beneficial to prevent the lower support block 142 from bending or deflecting when subjected to vertical forces through a larger fixed area;

[0023] A plurality of compression frames 144 are provided between the lower support block 142 and the hot melt head 145. In this embodiment, two compression frames 144 are provided, which are conducive to shrinking and deforming inward when subjected to excessive side pressure, thereby reducing the resistance to inserting the sealed pole, and enhancing the fitting effect through elastic force after insertion;

[0024] The lower support block 142 is provided with a limiting piece 143 at one end close to the compression frame 144, which helps to prevent the compression frame 144 from being squeezed and deformed;

[0025] The hot melt head 145 is a bullet-shaped block structure made of hot melt adhesive material, which is conducive to rapid hot melting and attachment to the fixed-sealed pole when heated by friction, and reduces the resistance when inserting into the fixed-sealed pole through a relatively rounded contact surface;

[0026] An elastic shielding sheet is provided at the end of the cylinder 11 above the pressure sheet 12 , which helps to prevent debris from falling between the cylinder 11 and the extrusion wall 13 and affecting the outward expansion effect of the extrusion wall 13 .

[0027] The working principle of the utility model is as follows: when in use, the sealed pole is inserted into the sleeve tube 1, and the faster the insertion speed, the better. When inserting, the outer wall surface of the sealed pole and the hot melt head 145 will rub against each other, and then the friction will generate heat, causing the hot melt head 145 to melt, and then the fluidity will be generated after hot melting and adhere to the outer surface of the sealed pole. After the sealed pole is installed, the hot melt head 145 is attached to the surface of the sealed pole in a large area after hot melting, and the entire sleeve tube 1 is adhered to the outer surface of the sealed pole through the hot melt colloid, which greatly improves the connection strength between the sealed pole and the insulating tube. At the same time, when the sealed pole is heated and expanded during operation, the lateral pressure generated by the expansion is output to the pressure plate 12 through the extrusion wall 13 to expand and squeeze it outward, so that the pressure plate 12 is deformed to absorb the lateral pressure, and converted into elastic force to output to the pressure plate 12, so as to prevent the cylinder 11 from being damaged by fatigue caused by repeated expansion and contraction. At the same time, the pressure applied to the outer wall of the sealed pole by the extrusion wall 13 is greater through the elastic force, so as to further prevent the insulating tube from falling off.

[0028] The utility model is intended to protect the structure of the product. The model of each component is not the content of the utility model, and it is also a known technology. Any component on the market that can achieve the above functions of the utility model can be used as a choice. Therefore, the model and other parameters of the component are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of various components.

[0029] The above shows and describes the basic principle and main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents. Anything not described in detail in the utility model is a well-known technology of those skilled in the art.

Claims

1. A sealed pole insulating cylinder, comprising a sleeve cylinder (1), the sleeve cylinder (1) comprising a cylinder body (11), characterized in that: The inner wall of the cylinder (11) is also provided with an extrusion wall (13), a pressure plate (12) is provided between the cylinder (11) and the extrusion wall (13), and the inner wall of the cylinder (11) is also provided with a plurality of hot-melt fixing columns (14) whose ends penetrate the extrusion wall (13). When the sealed pole is heated and expanded, the extrusion wall (13) is squeezed outward and elastically deforms through the pressure plate (12) to absorb the expansion pressure, while cooperating with the hot-melt connection between the ends of the hot-melt fixing columns (14) and the sealed pole to maintain a firm connection between the insulating cylinder and the sealed pole.

2. The solid-sealed pole insulating cylinder according to claim 1, characterized in that: The outer wall of the end of the cylinder (11) is also provided with a reinforcement ring (2).

3. The solid-sealed pole insulating cylinder according to claim 1, characterized in that: The hot melt fixing column (14) comprises a lower supporting block (142) fixedly connected to the inner wall of the cylinder (11) and a hot melt head (145) arranged at one end of the lower supporting block (142) and penetrating the extrusion wall (13).

4. The solid-sealed pole insulating cylinder according to claim 3, characterized in that: A stabilizing plate (141) is provided between the lower supporting block (142) and the inner wall of the cylinder (11).

5. The solid-sealed pole insulating cylinder according to claim 3, characterized in that: A plurality of compression frames (144) are provided between the lower supporting block (142) and the hot melt head (145).

6. The solid-sealed pole insulating cylinder according to claim 5, characterized in that: A limiting piece (143) is provided at one end of the lower supporting block (142) close to the compression frame (144).

7. The solid-sealed pole insulating cylinder according to claim 3, characterized in that: The hot melt head (145) is a bullet-shaped block structure made of hot melt adhesive material.

8. The solid-sealed pole insulating cylinder according to claim 1, characterized in that: An elastic shielding sheet is provided at the end of the cylinder (11) located above the pressure sheet (12).

Images