Fault warning device for cooling fan
A technology of fault alarm and cooling fan, which is applied in the direction of pump control, non-variable pump, machine/engine, etc., can solve the problems of equipment stop working, low inspection efficiency, poor effect, etc., and achieve the effect of reasonable structure and reliable operation
Inactive Publication Date: 2016-09-28
国网山东省电力公司乳山市供电公司
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Problems solved by technology
Whether the cooling fan in this type of equipment works normally is related to whether the performance of the continuous working equipment can be stable. Once the cooling fan fails, it will cause the equipment to stop working, and seriously cause equipment damage and bring losses to users.
At this stage, there is no special tool for detecting the working state of the cooling fan of the three-wire DC instrument (the red and black leads of the electric fan are power and ground wires, and the other wire (yellow or white) outputs the speed measurement pulse signal, use this signal as the input signal of this design cooling fan), it needs manual regular inspection, the inspection efficiency is low, the effect is poor, and it is impossible to realize the real-time monitoring and fault alarm of the cooling fan working status
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[0016] The present invention will be further described below in conjunction with the accompanying drawings.
[0017] As shown in the accompanying drawings, the present invention proposes a cooling fan fault alarm device, which is characterized in that it is provided with a pulse signal processing circuit 1, a comparison circuit 2, an alarm circuit 3, and a voltage stabilizing circuit 4, wherein the output of the pulse signal processing circuit 1 The terminal is connected with the comparison circuit 2, the output terminal of the comparison circuit 2 is connected with the alarm circuit 3, and the comparison circuit 2 is connected with the voltage stabilizing circuit 4.
[0018] The present invention can also be provided with an alarm signal output circuit 5, which is connected to the output terminal of the comparison circuit 2 via the voltage stabilizing circuit 4, and is used for outputting alarm data.
[0019] The pulse signal processing circuit of the present invention is pro...
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The invention relates to the technical field of equipment monitoring and warning devices, in particular to a fault warning device for a cooling fan. The fault warning device is especially suitable for long-term continuous work and is provided with the cooling fan for a DC instrument for speed measurement pulse signal output. The fault warning device is characterized in that the fault warning device is provided with a pulse signal processing unit, a comparison circuit, an alarm circuit and a voltage stabilization circuit; the output end of the pulse signal processing unit is connected with the comparison circuit; the output end of the comparison circuit is connected with the alarm circuit; and the comparison circuit is connected with the voltage stabilization circuit. Compared with the prior art, the fault warning device has the remarkable beneficial effects of being reasonable in structure, reliable in work and the like.
Description
technical field [0001] The invention relates to the technical field of equipment monitoring and alarming devices, in particular to a cooling fan failure alarming device especially suitable for cooling fans used in DC instruments that work continuously for a long time and have speed measuring pulse signal output. Background technique [0002] As we all know, for some electrical equipment that works continuously for a long time, it is necessary to install a cooling fan to speed up the discharge of heat in the equipment by increasing the air flow rate, thereby ensuring the normal operation of the equipment. Whether the cooling fan in this type of equipment works normally is related to whether the performance of the continuous working equipment can be stable. Once the cooling fan fails, it will cause the equipment to stop working, and seriously cause equipment damage and bring losses to users. At this stage, there is no special tool for detecting the working state of the cooling...
Claims
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IPC IPC(8): F04D27/00
CPCF04D27/008
Inventor 于广润仇智陈梦娇孙吉晓宋晓辉郭小艳刘胜潘雪乔雨于长江周筱筱王青华邹林林鹏王芳
Owner 国网山东省电力公司乳山市供电公司