According to the method of special thermocouple

First of all, we need to understand is the thermocouple installation considerations: mine thermocouple and heat pipes should be placed parallel link 2 m distance, interweave the link should be 0. 5m。 Second, thermocouple and other pipeline parallel or placed all link to 0. The distance of 5 m. Third, thermocouple placed directly buried, 1 - 35 kv thermocouple directly buried depth should not be less than 0. 7m。 4, 10 kv and below thermocouple when parallel placement of each interval is not less than 0. 1米,10 - 35 kv is not less than 0. 25 m, when mixed distance not less than 0. 5m。 Five, the smallest bending radius of thermocouple, multi-fiber thermocouple shall be not less than 15 d, single core thermocouple shall not be less than 20 d ( D for the thermocouple diameter) 。 6, 6 kv and above thermocouple discussion. 一个。 Put thermocouple terminal head, necessary stripping a conductive barrier layer, control shall not damage the insulation, should prevent scar and disaffected environment, need to use sand paper to grind; Barrier end should be flat and the graphite layer ( Carbon) Increased clean. B。 Plastic insulation and steel armoured thermocouple end copper barrier must be well grounded, the short line should also comply with this criterion, prevent ShiGang three-phase refuses to scale operation armoured end feel electromotive force, and even & quot; Lighter & quot; And burning sheath and divide. Grounding lead to adopt tin braided copper wire, and thermocouples copper belt when adjacent use soldering iron soldering, unfavorable use blowtorches sealing, in order to avoid damage the insulation. C。 Three-phase copper barrier should be connected to the ground, meticulous barrier ground wire and steel armoured ground wire should be to elicit respectively, insulation, the status of the welding ground should be as lower as possible. Seven, the thermocouple head and the center to discuss the fundamental request: a. Excellent conductors adjacent; b。 Good insulation, suchas anti-democracy adopt radiation crosslinked heat unwritten silicone rubber insulation material; c。 Excellent sealing; d。 Sufficient strength to the machine, can adapt to all kinds of operation. Eight, thermocouple end must be waterproof, corrosion and other corrupt nature of the material, in case of breakdown due to any cause insulation aging and water tree. Nine, the loading and unloading of thermocouple must use crane or forklift, stop flat, flat, large thermocouple placement must use the cable car, in order to avoid the thermocouple from external damage or scratch insulation by artificial drag. Ten, thermocouple, such as reason cannot real-time installation, should put it in a dry place to store, guard against sunlight insolate, thermocouple end into the water, etc. Second, and a link to be reckoned with, is to be carried out on the installation of thermocouple acceptance check, see if there were any omissions place. A, user acceptance, please first, see thermocouple show whether there is any breakage, and the construction personnel to use multimeter to test each thermocouple resistance and insulation resistance, thermocouple resistance to confirm whether normal, insulation is normal, shall be recorded. Personnel, please users of the supervision of the entire laid for acceptance, acceptance of the project are: A) The laying of insulation whether level off; B） If you have installed reflective film, examine whether the laid of reflective film formation; C) Barbed wire installed whether level off, fixed. D） Hot thermocouple, after the power supply cable surface temperature have improved significantly, and sign the acceptance certificate for confirmation.