High-voltage cable polyethylene insulation module with gravel type structure

Abstract

The utility model discloses a high-voltage cable polyethylene insulation module with a gravel type structure, and relates to the technical field of insulation modules. The high-voltage cable polyethylene insulation module with the gravel type structure comprises two fixed bases and polyethylene particles, the polyethylene particles are formed at a low temperature to form a low-temperature formed insulation module, the fixed bases are subjected to low-temperature heating through an external heating device, the low-temperature heating temperature ranges from 60 DEG C to 80 DEG C, and the insulation module is formed after low-temperature forming. The low-molecular-weight polyethylene particles can be slowly melted after being heated at a low temperature for a period of time, the assembly can be formed under extrusion of a forming part, the low-molecular-weight polyethylene particles cannot be completely melted due to low-temperature heating, the polyethylene particles form an integral solid structure under the action of mixed liquid, and the solid structure is an insulating module. The surface of the insulation module after low-temperature forming is gravel-shaped, so that subsequent use is facilitated, and the practicability of the high-voltage cable polyethylene insulation module with the gravel-shaped structure is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to insulating module technical field, especially in a kind of high voltage cable polyethylene insulating module with sand and gravel type structure. BACKGROUND

[0002] Insulating module is used in the connection of high voltage cable, and the connection of two high voltage cables is protected, and leakage is prevented.

[0003] In the production of insulating module, mold is used, low molecular weight polyethylene particles are placed in the mold by pouring polyethylene into the mold, and the connection of two high voltage cables is placed in the mold, and finally the polyethylene is melted by heating the mold, and the polyethylene is shaped and connected with the two high voltage cables under the action of the mold. However, the above operation steps are not all performed at the construction site, especially when connecting two high voltage cables in special circumstances, it is necessary to take two high voltage cables to the designated position to make insulating module to connect two high voltage cables, which is time-consuming and laborious, and has poor practicability. UTILITY MODEL CONTENT

[0004] The utility model aims to solve one of the technical problems in the prior art, provide a kind of high voltage cable polyethylene insulating module with sand and gravel type structure, can solve the above operation steps are not all performed at the construction site, especially when connecting two high voltage cables in special circumstances, it is necessary to take two high voltage cables to the designated position to make insulating module to connect two high voltage cables, which is time-consuming and laborious, and has poor practicability.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of high voltage cable polyethylene insulating module with sand and gravel type structure, including two fixed base and polyethylene particle;

[0006] The low-temperature formed polyethylene particles are low-temperature formed insulating modules, and the high-temperature formed polyethylene particles are high-temperature formed insulating modules.

[0007] The low-temperature formed insulating module is in the form of sand and gravel.

[0008] Preferably, the upper surface of the lower fixed base is provided with four guide holes, and the lower surface of the upper fixed base is fixedly connected with four guide installation rods. Two molds are provided with forming parts matched therewith, and the space opposite to the corresponding mold of the two forming parts is used for placing low molecular weight polyethylene particles.

[0009] Preferably, the front and rear surfaces of the two forming parts are fixedly connected with connecting pipes, the upper surfaces of the two forming parts are fixedly connected with two concave connecting plates, and the upper ends of the four guide installation rods are respectively slidably penetrated out of the outer surfaces of the corresponding concave connecting plates.

[0010] Preferably, rectangular plates are fixedly connected to the left and right sides of the two fixed bases, and through holes are opened on the four rectangular plates. Screws are slidably sleeved on the inner walls of the multiple through holes.

[0011] Preferably, the plurality of screws are fixedly connected to corresponding concave connecting plates.

[0012] Preferably, each of the screws is provided with a fixing nut.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This high-voltage cable polyethylene insulation module with a gravel-like structure uses an external heating device to heat the fixed base at a low temperature between 60℃ and 80℃. After a period of time, the low molecular weight polyethylene granules slowly melt and are formed under the extrusion of the molding part. Because the low-temperature heating causes the low molecular weight polyethylene granules to not completely melt, and under the action of the mixed liquid, the surface of the insulation module after low-temperature forming will have a gravel-like appearance, which facilitates subsequent use and improves the practicality of the high-voltage cable polyethylene insulation module with a gravel-like structure.

[0015] 2. The high-voltage cable polyethylene insulation module with a gravel-like structure has four guide rods inserted into four guide holes, which guide and assist the closing of the two molds, improving the convenience of closing the two molds. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram showing the connection between the guide mounting rod and the concave connecting plate of this utility model;

[0019] Figure 3 This is a schematic diagram of the upper surface of the fixed base of this utility model;

[0020] Figure 4 This is a schematic diagram of the shape of the mold and the formed part of this utility model;

[0021] Figure 5 This is a schematic diagram of the shape of the insulation module after low-temperature forming;

[0022] Figure 6 This is a schematic diagram of the shape of the insulation module after high-temperature forming;

[0023] Figure 7 This is a schematic diagram of the distribution of polyethylene particles.

[0024] 1, fixed base; 2, through hole; 3, rectangular plate; 4, guide mounting rod; 5, fixed nut; 6, concave connecting plate; 7, connecting pipe; 8, shaped part; 9, screw; 10, mold; 11, guide hole; 12, polyethylene particles; 13, low-temperature formed insulation module; 14, high-temperature formed insulation module. DETAILED DESCRIPTION

[0025] This part will describe the specific embodiments of the utility model in detail, the preferred embodiments of the utility model are shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0026] In the description of the utility model, it is understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right and the like based on the orientation or position relationship shown in the drawings, is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.

[0027] In the description of the utility model, greater than, less than, more than and the like are understood as not including the number, above, below, within and the like are understood as including the number. If the first, second is described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0028] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installing and connecting should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.

[0029] Please refer to Figures 1-7 The utility model provides a kind of technical scheme: a high-voltage cable polyethylene insulation module with gravel type structure, including two fixed base 1 and polyethylene particles 12, polyethylene particles 12 are low-temperature formed insulation module 13 after low-temperature forming, polyethylene particles 12 are high-temperature formed insulation module 14 after high-temperature forming;

[0030] Low-temperature formed insulation module 13 is in gravel type.

[0031] Furthermore, molds 10 are fixedly connected to both fixed bases 1. Four guide holes 11 are opened on the upper surface of the lower fixed base, and four guide mounting rods 4 are fixedly connected to the lower surface of the upper fixed base. Both molds 10 are provided with matching forming parts 8. The space between the two forming parts 8 and the opposite surfaces of the corresponding molds 10 is used to place low molecular weight polyethylene particles.

[0032] Furthermore, connecting pipes 7 are fixedly connected to the front and rear surfaces of the two forming parts 8, and two concave connecting plates 6 are fixedly connected to the upper surfaces of the two forming parts 8. The upper ends of the four guide mounting rods 4 slide through the outer surfaces of the corresponding concave connecting plates 6.

[0033] Furthermore, rectangular plates 3 are fixedly connected to the left and right sides of the two fixed bases 1, and through holes 2 are opened on the four rectangular plates 3. Screws 9 are slidably sleeved on the inner walls of the multiple through holes 2.

[0034] Furthermore, multiple screws 9 are respectively fixedly connected to corresponding concave connecting plates 6.

[0035] Furthermore, each of the multiple screws 9 is equipped with a fixing nut 5.

[0036] Furthermore, when using high-voltage cable polyethylene insulation modules with a gravel-like structure;

[0037] Implementation Case 1:

[0038] The insulation module is composed of low molecular weight polyethylene particles and a mixture.

[0039] The mixture comprises isobutylamine and LLDPE-G-MAH grafted resin, with an addition ratio of isobutylamine to LLDPE-G-MAH grafted resin of 5:1.

[0040] Isobutylamine is a colorless liquid with a pungent odor. It has good solubility and swelling properties. In the melt processing of polyethylene, isobutylamine is often used as an additive to promote the melting process and minimize the formation of decomposition products.

[0041] The LLDPE-G-MAH grafted resin has adhesion, which is mainly derived from its special chemical structure. LLDPE-G-MAH, linear low density polyethylene grafted maleic anhydride, is a product obtained by grafting maleic anhydride monomer onto the molecular chain of linear low density polyethylene (LLDPE) through chemical method. This grafting reaction introduces polar maleic anhydride groups onto the originally non-polar LLDPE molecular chain, thereby changing its physical and chemical properties. Due to the presence of maleic anhydride groups, LLDPE-G-MAH grafted resin can form chemical bonds with other polar materials or surfaces, thereby showing good adhesion. This adhesion allows LLDPE-G-MAH grafted resin to be used as a compatibilizer, toughener or adhesive in various applications, such as in the wire and cable industry, where it can be used as a polymer modifier to improve the adhesion and weather resistance of wire and cable. In terms of plastic modification, it can be used to improve the performance of low odor PP, cable materials and other materials.

[0042] When the low molecular weight polyethylene particles are initially extruded at low temperature, the worker first picks up one of the shaped parts 8, inverts the shaped part 8 in a mold 10, and slides the lower ends of the plurality of screws 9 through the inner walls of the corresponding through holes 2. Then, the plurality of screws 9 are fixed by the fixed nuts, thereby completing the installation of the shaped part 8.

[0043] Then, the worker places the low molecular weight polyethylene particles and their mixed solution inside the mold 10 through the two connecting pipes 7, and then shakes the entire fixed base 1 to uniformly distribute the low molecular weight polyethylene particles and their mixed solution inside the mold 10.

[0044] Then, the worker closes the control valves on the two connecting pipes 7, and then heats the fixed base 1 at low temperature by an external heating device. The low temperature heating temperature is between 60°C and 80°C. After a period of low temperature heating, the low molecular weight polyethylene particles will slowly melt and be formed into a shaped part under the extrusion of the shaped part 8. Due to the low temperature heating, the low molecular weight polyethylene particles cannot be completely melted, and under the action of the mixed solution, the polyethylene particles form a solid structure. The solid structure is an insulation module, and the surface of the low temperature formed insulation module will present a gravel-like structure, thereby facilitating subsequent use and improving the practicality of the high voltage cable polyethylene insulation module with a gravel-like structure.

[0045] Case 2:

[0046] When connecting two high-voltage cables, first, the staff takes out two already low-temperature formed insulation modules, first, removes the plurality of fixing nuts 5 from the screw rods 9, then removes the forming pieces 8, then places the two high-voltage cables in the interiors of the molds 10, then takes the other fixing base 1, which is detached in the same way as above;

[0047] Then, the other fixing base 1 is inverted and placed on the other fixing base 1 as shown in Figure 1 , and the four guide installation rods 4 are inserted into the interiors of the four guide holes 11, which play a guiding and auxiliary role in the clamping of the two molds 10, improving the convenience of the clamping of the two molds 10.

[0048] Then, the staff can use the external heating device to heat and form the two fixing bases 1 at high temperature, and the high-temperature heating temperature is between 160°C and 250°C, so that the two high-voltage cables are connected.

[0049] Working principle: when using high-voltage cable polyethylene insulation modules with sand-like structure;

[0050] Case 1:

[0051] When the low-molecular-weight polyethylene particles are preliminarily low-temperature extruded and pre-formed, first, the staff takes one of the forming pieces 8, inverts the forming piece 8 on a mold 10, and makes the lower ends of the plurality of screw rods 9 slide through the inner walls of the corresponding through holes 2, then fixes the plurality of screw rods 9 by the fixing nuts, thereby completing the installation of the forming piece 8.

[0052] Then, the staff places the low-molecular-weight polyethylene particles and their mixed solution in the interiors of the molds 10 through the two connecting pipes 7, and then shakes the fixing base 1 as a whole, so that the low-molecular-weight polyethylene particles and their mixed solution are evenly distributed in the interiors of the molds 10.

[0053] Then, the staff closes the control valves on the two connecting pipes 7, and then uses the external heating device to heat the fixing base 1 at low temperature, and the low-temperature heating temperature is between 60°C and 80°C. After a period of low-temperature heating, the low-molecular-weight polyethylene particles will slowly melt and be formed under the extrusion of the forming piece 8. Due to the low-temperature heating, the low-molecular-weight polyethylene particles cannot be completely melted, and under the action of the mixed solution, the polyethylene particles form a solid structure as an insulation module. The surface of the low-temperature formed insulation module will present a sand-like structure, which is convenient for subsequent use.

[0054] Case 2:

[0055] When connecting two high-voltage cables, firstly, the staff takes out two insulation modules which have been low-temperature formed, firstly, removes the plurality of fixing nuts 5 from the screw rod 9, then removes the forming piece 8, then places the two high-voltage cables in the inside of the mold 10 respectively, then takes the other fixing base 1, and the removing mode is consistent with the above;

[0056] Wherein, then the other fixing base 1 is invertedly buckled on the other fixing base 1 as shown in the figure, and four guide installation rods 4 are inserted into the inside of four guide holes 11, and the four guide installation rods 4 inserted into the four guide holes 11 play a guiding and auxiliary role for the clamping of the two molds 10. Figure 1

[0057] Wherein, then the staff can heat and form the two fixing bases 1 at high temperature through an external heating device, the high-temperature heating temperature is between 160-250 DEG C, so that the two fixing bases 1 are connected with the two high-voltage cables.

[0058] The above embodiment of the utility model is described in detail in combination with the drawings, but the utility model is not limited to the above embodiment, and various changes can be made within the knowledge range possessed by ordinary skilled persons in the technical field without departing from the purpose of the utility model.​

Claims

1. A high voltage cable polyethylene insulation module having a grit-type structure, characterized in that, Two fixed bases (1) and polyethylene particles (12) are included. The polyethylene particles (12) are low-temperature post-formed insulation modules (13) after low-temperature post-forming, and are high-temperature post-formed insulation modules (14) after high-temperature post-forming. The low-temperature post-formed insulation modules (13) are in the form of sand.

2. A high voltage cable polyethylene insulation module having a grit-type structure according to claim 1, characterized in that: The upper surface of the lower fixed base is provided with four guide holes (11), and the lower surface of the upper fixed base is fixedly connected with four guide installation rods (4).

3. A high voltage cable polyethylene insulation module having a grit-type structure according to claim 2, characterized in that: The upper surface of each of the two forming pieces (8) is fixedly connected with two concave connecting plates (6), and the upper ends of the four guide installation rods (4) are respectively slidably penetrated through the outer surfaces of the corresponding concave connecting plates (6).

4. A high voltage cable polyethylene insulation module having a grit-type structure according to claim 1, characterized in that: The left and right sides of each of the two fixed bases (1) are fixedly connected with rectangular plates (3), and the upper surfaces of the four rectangular plates (3) are provided with through holes (2).

5. A high voltage cable polyethylene insulation module having a grit-type structure according to claim 4, characterized in that: The inner walls of the multiple through holes (2) are slidably sleeved with screw rods (9).

6. A high voltage cable polyethylene insulation module having a grit-type structure according to claim 4, characterized in that: The multiple screw rods (9) are respectively fixedly connected with the corresponding concave connecting plates (6). The multiple screw rods (9) are respectively provided with fixed nuts (5).

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