Shielding ball opening position positioning method and positioning device, projection point calibration device
A positioning device and positioning method technology, applied in the direction of measuring device, mechanical measuring device, using mechanical device, etc., can solve the problems of low construction efficiency, difficult on-site construction, and high engineering cost, and achieve the effect of solving difficult construction.
Active Publication Date: 2018-12-14
PINGGAO GRP +2
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Problems solved by technology
[0004] The purpose of the present invention is to provide a positioning method for the position of the opening of the shielding ball, so as to solve the problems of difficulty in construction at the engineering site, low construction efficiency and high cost of the project due to the need for multiple tests to find the position of the opening; at the same time The object of the present invention is also to provide a positioning device for implementing the positioning method and a projection point calibration device for finding the positive projection point of the axis of the pipe generatrix on the outer circle of the lower shielding sphere in the implementation of the method
Method used
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Embodiment Construction
[0027] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0028] A specific embodiment of the shielding ball opening position positioning device of the present invention, such as Figure 1 to Figure 4 Shown, comprise cross ruler 3, connecting rod 4, positioning ruler 5 and support rod 6.
[0029] The horizontal ruler 3 includes a straight bar-shaped body 31 extending in the front-to-back direction. The body 31 is provided with a longitudinal slot 32 penetrating up and down and a transverse slot 33 penetrating left and right. The longitudinal slot 32 and the transverse slot 33 are all along the front-rear direction. extend and connect the two. Longitudinal elongated hole 32 is used for connecting rod 4 to install and has formed connecting rod installation hole, and transverse elongated hole 33 is used for bolt to wear and has formed horizontal ruler bolt perforation. The lower side of the body 31 is an outer c...
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The invention relates to a shield ball perforating position positioning method and positioning device, and a projection point calibration device. When the positioning device is used, a user only needs to put a horizontal scale on a lower shield ball and make a tubular busbar positioning plane in the same plane with the external circle of the lower shield ball and then move the horizontal scale to attach the whole length of the tubular busbar positioning plane on a positioning scale to the external surface of a tubular busbar. According to the position relation between the tubular busbar positioning plane and the external circle plane, an orthographic projection a (i.e. a lower projection point a) of the axis of the tubular busbar on the external circle of the lower shield ball and an included angle alpha of the axis of the tubular busbar and the external circle of the lower shield ball are determined. Then according to the unique engagement relation between an upper shield ball and the lower shield ball, an upper projection point A on the upper shield ball corresponding to the lower projection point a is determined. Then according to the included angle alpha, the arc length l from a center point O to be perforated in the upper shield ball to the upper projection point A is determined, so that the position of the center point O to be perforated can be found on the upper shield ball.
Description
technical field [0001] The invention relates to a method for locating the opening position of a shielding ball, a locating device, and a projection point calibration device. Background technique [0002] UHV DC transmission technology has been widely used in China in recent years, and many transmission lines have been built. The converter station is an important part of the DC transmission project. The valve hall of the converter station is a closed space for AC and DC conversion. The corona phenomenon at the end of the wire, the slot and the corner in the valve hall is serious. It will cause heat accumulation and cause a series of adverse effects. Therefore, it is necessary to add shielding fittings at the ends and corners of the tubular busbar to increase the anti-corona capability of the tubular busbar. [0003] During on-site construction, in order to connect the shielding ball to the tubular busbar, it is necessary to open holes at the corresponding positions of the s...
Claims
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IPC IPC(8): G01B5/00
CPCG01B5/00
Inventor 李春迎常林晶雷咸伦杨国华乐波祝全乐王卫朱咏璋徐磊
Owner PINGGAO GRP