Burglar alarm for cable
An anti-theft alarm and cable technology, which is applied in the direction of electric alarms and other directions, can solve the problems of not easy to find, freeze loss, theft of cables, etc., and achieve the effect of timely detection and simple structure.
Inactive Publication Date: 2013-01-30
HANDAN SPECIAL SHAFT SINKING CHINA COAL ENERGY GROUP
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Problems solved by technology
[0002] The water source wells used in the freezing project are generally 300 meters away from the freezing station (refrigeration workshop), and most of the water source wells are close to villages without walls. Theft of cables occurs frequently, and it is not easy to find them in time
Because the water supply system of the freezing station is one of the three major systems of freezing and cooling (ammonia system, brine system, and cooling water system), and during the freezing and cooling process, the cooling water supply system is an uninterrupted water supply. The water supply system will be forcibly interrupted, causing immeasurable damage to the freeze
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[0009] As shown in the attached figure, the phases L1, L2, and L3 of the cooling water supply system cable of the freezing project are connected to the water pump motor 2 through the leakage switch 1 and the main switch 5, and the phase N of the cooling water supply system cable is connected to the coil of the intermediate relay ZJ. The normally closed contacts of the intermediate relay ZJ are connected in series in the alarm circuit. Electric bell 3 and flashing light 4 are arranged in the warning circuit. Once the cooling water supply system cable is cut off, the coil of the intermediate relay ZJ is powered off, the normally closed contact of the intermediate relay ZJ is closed, the alarm circuit is connected, and the alarm circuit sends out sound and light alarms to remind the personnel on duty to deal with it in time.
[0010] Another normally closed contact of the intermediate relay ZJ is connected with the wireless alarm circuit. The wireless alarm circuit can be CDMA o...
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The invention relates to a burglar alarm for a cable. A phase L1, a phase L2 and a phase L3 of a cable for a cooling water supply system in freezing engineering are connected with a water pump motor through a residual current circuit breaker and a main switch; a coil of an intermediate relay is connected into a phase N of the cable for the cooling water supply system; and a normally closed contact of the intermediate relay is serially connected into an alarm circuit. The burglar alarm is simple in structure; burglary can be found out in time; the burglar alarm alarms in time; and the cable can be maintained in time.
Description
technical field [0001] The invention relates to a cable anti-theft alarm device used in freezing engineering. Background technique [0002] The water source wells used in the freezing project are generally 300 meters away from the freezing station (refrigeration workshop), and most of the water source wells are close to villages without walls. Theft of cables occurs from time to time, and it is not easy to find out in time. Because the water supply system of the freezing station is one of the three major systems of freezing and cooling (ammonia system, brine system, and cooling water system), and during the freezing and cooling process, the cooling water supply system is an uninterrupted water supply. The water supply system will be forcibly interrupted, causing immeasurable damage to the freeze. Contents of the invention [0003] In order to overcome the shortcomings of the prior art, the invention provides a cable anti-theft alarm device, which has a simple structure an...
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Inventor 杨志国王杰高清赵志福张立刚康毅
Owner HANDAN SPECIAL SHAFT SINKING CHINA COAL ENERGY GROUP