Detection device for temperature-sensing thermal actuators
A detection device, a technology of temperature sensing and thermal motion, applied in electrical testing/monitoring, etc., can solve the problems of inability to measure the thrust of the push rod, inaccurate temperature control, etc., and achieve high detection accuracy and reliability, good versatility, and convenient operation. Effect
Inactive Publication Date: 2013-06-26
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology
[0004] In order to overcome the inaccurate temperature control of the prior art and the inability to measure the thrust generated by the push rod, the present invention provides a detection device for a temperature-sensitive thermal element, which can accurately measure the working temperature of the thermal element and the stroke of the push rod and push rod pressure, and can display measurement data in real time, draw thermal element push rod stroke, push rod pressure change curve with working temperature, generate test report and other functions
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[0018] The invention includes a temperature control unit, a detection platform, a sensor group, a data acquisition and conditioning module, a control unit, a display module, a data transmission module, an audible and visual warning module, a self-test and self-calibration module and a watchdog module.
[0019] The temperature control unit is used to control the temperature of the thermal element. The temperature control unit includes a heating module and a control module. When using, the user can set the temperature threshold, and the temperature control module will automatically detect the current temperature. If the current temperature is lower than the set temperature threshold, the heating module will start to heat the thermal element; when the temperature rises to the set temperature threshold range , the temperature control module will control the heating module to reduce the power to work, so as to realize the constant temperature control of the thermal element. The te...
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The invention discloses a detection device for temperature-sensing thermal actuators, and detection device is characterized in that a temperature control unit carries out constant temperature control on thermal actuators; a detecting bench senses the push-rod strokes, thrusts and ambient temperatures of the thermal actuators, then the push-rod strokes, thrusts and ambient temperatures of the thermal actuators are input into a control module by virtue of a data acquisition / conditioning module and compared with the preset temperature thresholds, corresponding push-rod stroke thresholds and push-rod pressure thresholds of the thermal actuators so as to judge whether the thermal actuators are qualified; the judgment results are transferred to a data storage module for storage or transferred to a display module for display; an acousto-optic alarming module prompts that the products are qualified; and meanwhile, the judgment results are transmitted to an upper computer by virtue of a data transmission module. The device disclosed by the invention can carry out detection on the operating parameters of various thermal actuators, such as the operating temperatures, push-rod strokes and thrusts of the thermal actuators; the detection device is simple in structure and good in universality; and the detection precision and reliability of the detection device are high.
Description
technical field [0001] The invention relates to a detection device for a temperature-sensitive thermodynamic element. Background technique [0002] As a temperature feedback control device, the temperature-sensitive thermal element is widely used in various occasions that need to control the temperature, such as the automobile industry, building heating, sanitary bath, HVAC, industrial automatic control, household appliances, petrochemical, Safety devices and other fields. There are many types of temperature-sensing thermal components, and the main types currently used are temperature-sensing wax-type thermal components and memory alloy-type thermal components. Its working principle uses various temperature characteristics of temperature-sensitive materials, such as thermal expansion and contraction, phase change, shape memory characteristics, etc., to sense changes in ambient temperature, convert thermal energy into mechanical energy, and push the push rod of the thermal e...
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IPC IPC(8): G05B23/02
Inventor 李洲洋谷文韬
Owner NORTHWESTERN POLYTECHNICAL UNIV