阅读说明：本技术 复合绝缘子伞片加装方法 (Method for installing composite insulator umbrella piece ) 是由 张志伟 冯帆 郭慧豪 巩鲁洪 贾中伟 黄山 李红红 付莉萍 焦俊 张赜玉 于 2020-05-29 设计创作，主要内容包括：本发明公开了一种复合绝缘子伞片加装方法,根据客户要求或设计要求,在现有复合绝缘子上确定需要加装伞片的待加装部位,切除复合绝缘子上待加装部位处的原有伞片,把削切后的待加装部位放入与待加装伞片相应的模具上,进行注塑、硫化操作后,脱模,完成在复合绝缘子待加装部位的伞片加装操作,本发明在复合绝缘子对应的位置削切原有的伞裙,将削切过伞裙的伞串重新放回装有与待加装伞裙相对应的模具中进行定位,并通过橡胶注射机进行注射成型,实现加装的伞裙与复合绝缘子护套的无缝连接,保证连接强度,满足了用户的防覆冰要求。(The invention discloses a method for additionally installing umbrella pieces of a composite insulator, which comprises the steps of determining a part to be additionally installed with an umbrella piece on the existing composite insulator according to customer requirements or design requirements, cutting off the original umbrella piece at the part to be additionally installed on the composite insulator, placing the cut part to be additionally installed on a mold corresponding to the umbrella piece to be additionally installed, performing injection molding and vulcanization operation, demolding, and completing the operation of additionally installing the umbrella piece at the part to be additionally installed on the composite insulator.)

1. The utility model provides a compound insulator umbrella piece installs method additional, confirms on current compound insulator that to install the umbrella piece additional and to install the position, the original umbrella piece of position department is installed additional to the original umbrella piece of waiting to install position department on the excision compound insulator, on cutting waiting to install the position additional after cutting put into and wait to install the corresponding mould of umbrella piece additional, carry out the operation of moulding plastics, vulcanize the back, the drawing of patterns, the completion is waiting to install the umbrella piece at the position additional at compound insulator and installs the operation additional, its concrete step is:

step one, dividing the prepared raw materials into five batches, sequentially adding the five batches into a rubber mixing furnace, and mixing at the temperature of 60-160 ℃, wherein the mixing time of each batch is 45 min-1 h;

step two, installing a mold corresponding to the umbrella piece to be added on a rubber injection molding machine, and heating and preserving heat;

step three, cutting original umbrella pieces at the position to be added on the composite insulator to the root;

step four, placing the part to be installed of the processed composite insulator into the mold in the step two, directly injecting, and keeping the temperature and pressure at 165 +/-5 ℃ and 180Mpa for 22-25min to ensure that the composite insulator is completely vulcanized, and releasing the pressure twice in the period;

and step five, releasing the pressure, demolding, taking out the additionally installed composite insulator.

2. The method for installing the umbrella piece of the composite insulator as claimed in claim 1, wherein the method comprises the following steps: in the first step, the prepared raw materials comprise the following components in parts by weight: 110-55 parts of silicon rubber, 245-55 parts of white carbon black N20D 10, 0.4-0.6 part of primary assistant A, 0.1-0.2 part of hydroxyl silicone oil YG 292, 0.2-0.6 part of primary assistant B, 0.2-0.6 part of primary assistant C, 0.5-1 part of methyl silicone oil 2000CS, 0.1-0.2 part of primary assistant D, 2-3 parts of primary zinc oxide, 40-60 parts of primary micro powder, HZ-9095-5.6 parts of white carbon black, 0.4-0.8 part of vulcanizing agent DCP, and 16070.5-0.9 part of gray gum color indicator 1806 or red gum color indicator.

3. The method for installing the umbrella piece of the composite insulator as claimed in claim 1, wherein the method comprises the following steps: in the second step, the heating and heat preservation temperature is 165 +/-5 ℃.

4. The method for installing the umbrella piece of the composite insulator as claimed in claim 1, wherein the method comprises the following steps: and in the third step, determining the part to be added, which needs to be added with the umbrella piece, on the existing composite insulator in advance according to the requirements of customers or design requirements.

5. The method for installing the umbrella piece of the composite insulator as claimed in claim 1, wherein the method comprises the following steps: in the third step, the original umbrella slices are cut into the similar round root parts with the diameter of 40mm, and the grinding treatment is carried out.

6. The method for installing the umbrella piece of the composite insulator as claimed in claim 1, wherein the method comprises the following steps: and in the fourth step, pressure relief is carried out twice at a pressure relief rate of 72 MPa/s in the heat preservation and pressure maintenance process, and the pressure is restored to 140-150 MPa within 40s after pressure relief.

The technical field is as follows:

the invention relates to the field of insulators, in particular to a method for additionally installing an umbrella piece of a composite insulator.

Background art:

since the failure of the power transmission line caused by sudden snow disaster in Chen, Hunan at the end of 2008, measures of increasing the creepage distance of the insulator and increasing the height of the insulator are adopted in the power transmission line to improve the electrical performance of the insulator and improve the safety and reliability of the power transmission line. Some users require to adopt a method of installing a large umbrella at intervals to improve the ice coating resistance and the pollution flashover resistance of the insulator and prevent bridging discharge.

The invention content is as follows:

the technical problem to be solved by the invention is as follows: the method overcomes the defects of the prior art, cuts the original umbrella skirt at the position corresponding to the composite insulator, replaces the umbrella string cut by the umbrella skirt in a mould corresponding to the umbrella skirt to be additionally installed for positioning, and performs injection molding through a rubber injection machine, thereby realizing the seamless connection between the additionally installed umbrella skirt and the composite insulator sheath and ensuring the connection strength.

The technical scheme of the invention is as follows: the utility model provides a compound insulator umbrella piece installs method additional, confirms on current compound insulator that to install the umbrella piece additional and to install the position, the original umbrella piece of position department is installed additional to the original umbrella piece of waiting to install position department on the excision compound insulator, on cutting waiting to install the position additional after cutting put into and wait to install the corresponding mould of umbrella piece additional, carry out the operation of moulding plastics, vulcanize the back, the drawing of patterns, the completion is waiting to install the umbrella piece at the position additional at compound insulator and installs the operation additional, its concrete step is:

step one, dividing the prepared raw materials into five batches, sequentially adding the five batches into a rubber mixing furnace, and mixing at the temperature of 60-160 ℃, wherein the mixing time of each batch is 45 min-1 h;

step two, installing a mold corresponding to the umbrella piece to be added on a rubber injection molding machine, and heating and preserving heat;

step three, cutting original umbrella pieces at the position to be added on the composite insulator to the root;

step four, placing the part to be installed of the processed composite insulator into the mold in the step two, directly injecting, and keeping the temperature and pressure at 165 +/-5 ℃ and 180Mpa for 22-25min to ensure that the composite insulator is completely vulcanized, and releasing the pressure twice in the period;

and step five, releasing the pressure, demolding, taking out the additionally installed composite insulator.

Further, in the first step, the prepared raw materials comprise the following components in parts by weight: 110-55 parts of silicon rubber, 245-55 parts of white carbon black N20D 10, 0.4-0.6 part of primary assistant A, 0.1-0.2 part of hydroxyl silicone oil YG 292, 0.2-0.6 part of primary assistant B, 0.2-0.6 part of primary assistant C, 0.5-1 part of methyl silicone oil 2000CS, 0.1-0.2 part of primary assistant D, 2-3 parts of primary zinc oxide, 40-60 parts of primary micro powder, HZ-9095-5.6 parts of white carbon black, 0.4-0.8 part of vulcanizing agent DCP, and 16070.5-0.9 part of gray gum color indicator 1806 or red gum color indicator.

Further, in the second step, the heating and heat preservation temperature is 165 +/-5 ℃.

Further, in the third step, the part to be installed, where the umbrella piece needs to be installed, is determined on the existing composite insulator in advance according to the customer requirements or design requirements.

Further, in the third step, the original umbrella slices are cut into the similar round root parts with the diameter of 40mm, and the grinding treatment is carried out.

And further, in the fourth step, pressure relief is carried out twice at a pressure relief rate of 72 MPa/s in the heat preservation and pressure maintenance process, and the pressure is restored to 140-150 MPa within 40s after pressure relief.

The invention has the beneficial effects that: the invention cuts the original shed at the position corresponding to the composite insulator, puts the shed string which is cut by the shed back into the mould corresponding to the shed to be added for positioning, and carries out injection molding by a rubber injection machine, thereby realizing seamless connection between the added shed and the composite insulator sheath, ensuring the connection strength and meeting the ice-coating prevention requirement of users.

The specific implementation mode is as follows: