Detection system for detecting temperature alarm

Abstract

The invention discloses a detection system for detecting a temperature alarm. The system comprises a circulating air passage, a first evaporator, a heater, a first circulating fan, a pore plate, an air grid, a test working position and a test device, wherein the first evaporator, the heater, the first circulating fan, the pore plate, the air grid and the test working position are arranged in the circulating air passage in turn; the test device is arranged at the test working position and consists of a thermostat arranged in the annular space of the circulating air passage, a driving cylinder and a guide post arranged in the thermostat, a pallet which is sleeved on the guide post and in transmission connection with the driving cylinder and a test piece bracket arranged on the pallet; the circulating air passage is provided with an opening adapted to the test piece bracket; and when the driving cylinder drives the pellet to move upwards, the test piece bracket can make a test piece extend into the circulating air passage from the thermostat. The test piece is ascended and descended through the driving cylinder arranged in the thermostat without the assistance of a guide rod arrangedin the circulating air passage so that turbulent flow in the circulating air passage can be effectively prevented. Therefore, the system has the advantages of high detection accuracy, high temperature rate, small temperature difference and high detection accuracy.

Description

technical field [0001] The invention relates to a detection device and a detection method using the detection device, more specifically, to a detection system for detecting temperature-type alarms. Background technique [0002] The traditional detection system used to detect temperature-type alarms has simple structure, single function, slow heating rate, large temperature difference, and low detection accuracy. When some temperature-type alarms are tested, fast heating rate, small temperature difference, and The detection accuracy is high, so the traditional detection system used to detect temperature-type alarms cannot meet the needs of temperature-type alarms that require fast heating rate, small temperature difference, and high detection accuracy. [0003] On January 28, 2009, the State Intellectual Property Bureau disclosed an invention patent for a detection system for detecting temperature-type alarms. Its patent number is 200820046081.9. The evaporator, heater, circ...

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Problems solved by technology

[0002] The traditional detection system used to detect temperature-type alarms has simple structure, single function, slow heating rate, large temperature difference, and low detection accuracy. When some temperature-type alarms are tested, fast heating rate, small temperature difference, and The detection accuracy is high, so the traditional detection system used to detect temperature-type alarms cannot meet the needs of temperature-type alarms that require fast heating rates, small temperature differences, and high detection accuracy.

[0003] On January 28, 2009, the State Intellectual Property Bureau disclosed an invention patent for a detection system for detecting temperature-type alarms. Its patent number is 200820046081.9. The evaporator, heater, circulating fan, orifice plate, air grid, test station, test device installed on the test station, the test device and the lifting device installed on the top of the circulating air duct for the lifting of the test device The lifting mechanism is installed on the top of the circulating air duct and consists of a lifting cylinder and a chain connected to the cylinder shaft of the lifting cylinder. The test device is composed of a movable base and a guide set on the movable base. Rod and a hanging plate installed on the top of the guide rod, a test base is installed on the movable base, and the test base is connected to the driving motor installed at the bottom of the movable base in rotation. In the duct, since the guide rod is located in the circulating air duct, the air flow in the circulating air duct will be disturbed, which reduces the detection accuracy

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