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Rubber stress cone interfacial pressure measuring device and method

A detection device, stress cone technology, applied in the measurement device, using a stable tension/pressure test material strength, measurement force, etc., can solve problems such as stress testing, achieve great flexibility, convenient and fast installation and testing methods, materials Simple and accessible effects

Active Publication Date: 2014-12-03
江苏安靠智能输电工程科技股份有限公司
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Problems solved by technology

The stress generated by the expansion of the ring sample cannot be tested by this method

Method used

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  • Rubber stress cone interfacial pressure measuring device and method
  • Rubber stress cone interfacial pressure measuring device and method

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Embodiment Construction

[0021] In order to make the technical problems, technical solutions and advantages solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0022] The electric field intensity of the cable and the cable terminal is related to the voltage, and the electric field distribution of the cable terminal is much more complicated than that of the cable itself. When making 220kv cable terminals, it is necessary to strip off a section of cable sheath and cable shielding layer, resulting in a sharp increase in the electric field intensity at the shielding end, which is due to the extremely uneven distribution of the electric field at the cable terminal, which is likely to cause insulation breakdown and cause improvement. The terminal power of the area accumulative cable stops. The reduction and distribution of the electric field. For this kind of stress accident inside and outside, the cable can be shielded w...

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Abstract

The invention discloses a rubber stress cone interfacial pressure measuring device. The device comprises a metal pipe, two end sealing plates and a pressure testing meter, wherein multiple water outlets are formed in the metal pipe, the end sealing plates are installed at the two ends of the metal pipe, a water injection pipe is arranged on one of the end sealing plates, and the pressure testing meter is installed at the position of the water injection pipe. The invention further discloses a rubber stress cone interfacial pressure measuring method. The method comprises the steps of expanding a rubber stress cone and then arranging the rubber stress cone on the metal pipe in a sleeved mode, installing the end sealing plates at the two ends of the metal pipe, injecting water into the metal pipe through the water injection pipe at one end of the metal pipe, and reading the pressure value displayed on the pressure testing meter to obtain the interfacial pressure of the rubber stress cone when water flows out of the end of the rubber stress cone along the contact interface through the water outlets. According to the rubber stress cone interfacial pressure measuring device and method, measurement of stress generated during expansion of an annular sample is achieved, materials needed for measurement are easy to obtain, installation and measurement are convenient and fast, and no damage is caused to tested products.

Description

technical field [0001] The invention relates to a cable accessory pressure detection device, in particular to a rubber stress cone interface pressure detection device and method. Background technique [0002] Cable accessories are an indispensable part of the cable line and also the weakest link in the entire line, so the quality of the cable accessories is of great significance to the operation of the entire cable line. [0003] During the installation and working process of the rubber stress cone cable terminal, the contact pressure between the cable and the inner surface of the rubber stress cone directly affects the insulation of the entire terminal joint and the discharge level of the cable surface, maintaining a certain interface pressure and evenly distributed cable terminal installation and reliable operation important factor. Therefore, it is very important to measure the internal surface pressure of the rubber stress cone after expansion for the development and de...

Claims

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Application Information

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IPC IPC(8): G01L1/02G01L1/26G01N3/12
Inventor 陈晓鸣
Owner 江苏安靠智能输电工程科技股份有限公司
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