阅读说明：本技术 一种便携式外绝缘爬电距离测量工具 (Portable external insulation creepage distance measuring tool ) 是由 王晓光 李隆基 文清丰 郗晓光 张弛 王浩 王永福 于 2019-10-22 设计创作，主要内容包括：本发明涉及一种便携式外绝缘爬电距离测量工具,其技术特点是：包括把手、硅胶尺、转盘、滚轴和旋钮,所述硅胶尺的一侧表面印有刻度并且标注了不同污秽等级下各电压等级对应的爬电距离,该硅胶尺的另一侧表面具有粘度,该硅胶尺一端固定在转盘表面并且整体缠绕于转盘上,所述转盘套装在滚轴上,该滚轴位于把手中间且其两端安装在把手上,所述旋钮安装在滚轴的端部用于旋转滚轴。本发明设计合理,解决了传统使用胶带、金属丝或绳子等工具测量爬电比距方法存在的测量精度不准、操作不便等问题,具有造价低、体积小、便于携带、操作简易等优点,不仅提升了测量精度,还提高了工作效率,为运行人员日常巡视、隐患排查及故障分析工作提供了便利。(The invention relates to a portable external insulation creepage distance measuring tool, which is technically characterized in that: including handle, silica gel chi, carousel, roller bearing and knob, one side surface of silica gel chi is printed with the scale and has marked the creepage distance that each voltage class corresponds under the dirty grade of difference, and the opposite side surface of this silica gel chi has viscosity, and this silica gel chi one end is fixed on the carousel surface and whole twines on the carousel, the carousel suit is on the roller bearing, and this roller bearing is located in the middle of the handle and its both ends are installed on hand, the tip at the roller bearing is installed to the knob is used for rotatory roller bearing. The method has reasonable design, solves the problems of inaccurate measurement precision, inconvenient operation and the like of the traditional method for measuring the creepage specific distance by using tools such as adhesive tapes, metal wires or ropes and the like, has the advantages of low manufacturing cost, small volume, convenience in carrying, simplicity and easiness in operation and the like, improves the measurement precision, improves the working efficiency, and provides convenience for daily inspection, hidden danger troubleshooting and fault analysis of operators.)

1. The utility model provides a portable outer insulation creepage distance measuring tool which characterized in that: including handle, silica gel chi, carousel, roller bearing and knob, one side surface of silica gel chi is printed with the scale and has marked the creepage distance that each voltage class corresponds under the dirty grade of difference, and the opposite side surface of this silica gel chi has viscosity, and this silica gel chi one end is fixed on the carousel surface and whole twines on the carousel, the carousel suit is on the roller bearing, and this roller bearing is located in the middle of the handle and its both ends are installed on hand, the tip at the roller bearing is installed to the knob is used for rotatory roller bearing.

2. A portable external insulation creepage distance measuring instrument according to claim 1, wherein: the silica gel ruler is formed by pressing pure natural solid silica rubber through an oil press, and the thickness of the silica gel ruler is 0.5 mm.

3. A portable external insulation creepage distance measuring instrument according to claim 1, wherein: the viscosity of the silica gel ruler is determined by initial adhesion and stripping force, wherein the initial adhesion is measured by a No. 5 steel ball by adopting an inclined rolling ball method, and the stripping force is measured by 2.5N/mm when the stripping angle is 180 degrees.

4. A portable external insulation creepage distance measuring instrument according to claim 1, wherein: the calculation method of the creepage distance comprises the following steps: the creepage distance is the uniform creepage distance multiplied by the maximum operating voltage.

Technical Field

The invention belongs to the technical field of electric power measurement, and particularly relates to a portable external insulation creepage distance measuring tool.

Background

The creepage distance of the external insulation of the high-voltage equipment is one of important parameters for ensuring the safe operation of a power grid, and creepage distance testing is a necessary work for operators in daily inspection, hidden danger troubleshooting and fault analysis. The traditional creepage distance test method is mainly characterized in that an operator uses tools such as adhesive tapes, metal wires or ropes to be attached and wound from top to bottom along the surface of the external insulation of the high-voltage electrical equipment, the surface contour shape of an insulator is copied, and then the length of the adhesive tapes, the metal wires or the ropes is measured. Because tools such as sticky tape, wire or rope are difficult to guarantee and the external insulation surface is closely laminated, and yielding after the extension, consequently, measured data often is not accurate, has great error. Although some research and development personnel try to adopt a measurement mode of a three-dimensional laser scanning technology to solve the problem of low measurement accuracy in the traditional method, the measurement tool has the problems of high manufacturing cost, large volume, inconvenience in carrying and the like.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a portable external insulation creepage distance measuring tool which is low in manufacturing cost, small in size, convenient to carry and simple and easy to operate.

The technical problem to be solved by the invention is realized by adopting the following technical scheme:

the utility model provides a portable external insulation creepage distance measuring tool, includes handle, silica gel chi, carousel, roller bearing and knob, one side surface of silica gel chi is printed with the scale and has marked the creepage distance that each voltage level corresponds under the dirty grade of difference, and the opposite side surface of this silica gel chi has viscosity, and this silica gel chi one end is fixed on the carousel surface and whole twines on the carousel, the carousel suit is on the roller bearing, and this roller bearing is located the middle just its both ends of handle and installs on hand, the tip at the roller bearing is used for rotatory roller bearing in the knob is installed.

Furthermore, the silica gel ruler is formed by pressing pure natural solid silica rubber through an oil press, and the thickness of the silica gel ruler is 0.5 mm.

Further, the viscosity of the silica gel ruler is determined by initial adhesion and stripping force, wherein the initial adhesion is measured by a No. 5 steel ball by an inclined rolling ball method, and the stripping force is measured by 2.5N/mm when the stripping angle is 180 degrees.

Further, the calculation method of the creepage distance comprises the following steps: the creepage distance is the uniform creepage distance multiplied by the maximum operating voltage.

The invention has the advantages and positive effects that:

the invention has reasonable design, the tail end of the silica gel ruler is fixed on the surface of the turntable and is integrally wound on the turntable, a measurer holds the handle with one hand and rolls the turntable with the other hand, the turntable rotates around the fixed rolling shaft along the insulating surface from top to bottom, and the insulating creepage distance can be accurately read from the silica gel ruler, thereby solving the problems of inaccurate measurement precision, inconvenient operation and the like of the traditional creepage ratio distance measuring method using tools such as adhesive tape, metal wire or rope and the like.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a side view of fig. 1.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

A portable external insulation creepage distance measuring tool is shown in figures 1 and 2 and comprises a handle 1, a silica gel ruler 2, a turntable 5, a rolling shaft 3 and a knob 4. Silica gel chi one end is fixed on the carousel surface and wholly twines on the carousel, the carousel suit is on the roller bearing, and this roller bearing is located in the middle of the handle and its both ends are installed on handle, the knob is installed and is used for rotatory roller bearing and retrieve the silica gel chi winding to the carousel at the tip of roller bearing.

In the embodiment, the silica gel ruler is formed by pressing pure natural solid silica rubber through an oil press, has the thickness of 0.5mm, and has the characteristics of wear resistance, high temperature resistance, no deformation, no toxicity, no odor, softness, no cracking, long service life and the like. The scales are printed on one surface of the silica gel ruler, and the creepage distances corresponding to the voltage levels under different pollution levels are marked, so that whether the creepage distances of the equipment to be measured meet the requirements or not can be judged simply and clearly by measuring personnel through the marks on the silica gel ruler, and the specific requirements of relevant regulations on the creepage distances do not need to be consulted. The surface of the other side of the silica gel ruler has certain viscosity, so that the silica gel ruler can be tightly attached to the tested insulating surface without falling off, the viscosity of the silica gel ruler is determined by initial adhesion and stripping force, wherein the initial adhesion is measured by adopting an inclined rolling ball method to be a No. 5 steel ball, and the stripping force is measured by adopting a stripping angle of 180 degrees to be 2.5N/mm.

In this embodiment, the calculation method of the creepage distance is as follows: the creepage distance is the unified creepage distance multiplied by the highest operation voltage, wherein the relationship between different voltage grades and the highest operation voltage and the relationship between the unified creepage distance and the field filth degree are shown in table 1 and table 2:

TABLE 1 relationship between different voltage classes and maximum operating voltage

Voltage class (kV)	35	110	220	330	500
						Maximum operating voltage (kV)	40.5	126	252	363	550

TABLE 2 relationship between unified creepage specific distance and on-site filth degree

When the device is used, the tail end of the silica gel ruler is fixed on the surface of the rotary table and integrally wound on the rotary table, a measurer holds the handle with one hand and rolls the rotary table with the other hand, the rotary table rotates from top to bottom along the insulating surface around the fixed rolling shaft, and the insulating creepage distance can be accurately read from the silica gel ruler. After the measurement is finished, the staff for measurement can twist the knob to wind and recover the silica gel ruler to the turntable.

Nothing in this specification is said to apply to the prior art.

It should be emphasized that the embodiments described herein are illustrative rather than restrictive, and thus the present invention is not limited to the embodiments described in the detailed description, but also includes other embodiments that can be derived from the technical solutions of the present invention by those skilled in the art.