High-voltage test pen
An electroscope, high-voltage technology, applied in the direction of measuring electricity, measuring electrical variables, indicating the existence of current/voltage, etc., can solve problems such as being unable to adapt to the maintenance environment, unable to rotate the electroscope head, unable to expand and contract, etc.
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Embodiment 1
[0047]Example 1: Such asfigure 1 As shown, a high-pressure test pen comprises an operating lever 1, a steering mechanism 2, and a tension head 3. The tip end of the tensile head 3 is provided with a test probe 31; the operating lever 1 includes a plurality of telescopic tubes 4, the The telescopic tube 4 is a hollow structure and sequentially passes through the telescopic mechanism 40, such asFigure 8-9As shown, the telescoping mechanism 40 includes a bayonet 41 located at the bottom of the sleeve and a bayonet 42 in which the sleeve side wall is mounted and the card pin member 41 includes a sliding passage 43 and a sliding channel. 43 mating buckle 44, the snap 44 includes a limit post 45 and a restricted block 46, the limit block 46 is connected to the end portion of the sliding passage 43 through the spring 47, the limit column 45 top surface The arc surface is provided with a positioning chute 48 that cooperates with the buckle 44 at the inner side wall cartridge 42.
[0048]Such a...
Embodiment 2
[0050]Example 2: The distinguishing point of the first embodiment is that the anti-UV epoxy coating comprises the following preparation method: (1) Placement of 2 parts of methanolamine in the reactor, then slowly add 6 parts at 70 ° C. Formaldehyde, after 2 h after 2 hours, 3 parts of 2,4-dihydroxybenzophenone and 15 parts of methanol were added, and the modified 2,4-dihydroxybenzophenone was prepared after 3 hours.
[0051](2) 5 parts of modified 2,4-dihydroxybenzophenone, 4 parts of thiopropoxide is placed in 50 parts of acetone, adding 6 parts of N, N-dicyclohexyl carbonate, in 20 The reaction was reacted at ° C for 36 h, and the precipitate was removed, and the product was placed in ice water. After washing, the drying was prepared to obtain a mercapto-modified 2,4-dihydroxybenzophenone;
[0052](3) Three parts of the titanium dioxide immersed to 2% by weight of 2-bromo-2-methapropionic acid (3-trimethoxiliciliconyl) propyl ethanol solution was immersed in 12 h, and after removing 15...
Embodiment 3
[0055]Example 3: The distinction point of Example 1 is that the anti-UV epoxy coating comprises the following preparation method: (1) placing 4 parts of methanolamine in the reactor, then slowly added 12 part at 80 ° C Formation, 5 parts of 2,4-dihydroxybenzophenone and 20 parts of methanol were added after 4 hours, and the modified 2,4-dihydroxybenzophenone was prepared after 2,4-dihydroxybenzophen;
[0056](2) 8 modified 2,4-dihydroxybenzophenone, 7 parts of thiopropoxy acid were placed in 80 parts of acetone, 8 parts N, N-dicyclohexyl carbonate, in 30 The reaction was reacted at ° C for 36 h, and the precipitate was removed, and the product was placed in ice water. After washing, the drying was prepared to obtain a mercapto-modified 2,4-dihydroxybenzophenone;
[0057](3) 5 parts of titanium dioxide immersed to 4% by weight of 2-bromo-2-methapropionic acid (3-trimethoxysilaptic silica) propyl ethanol solution is immersed in 12 h, and after the removal of 20 parts of hydroxyethyl acrylam...
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Abstract
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