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Detection apparatus for liquid chemical product spontaneous combustion temperature

A technology of self-ignition temperature and measuring device, applied in the direction of investigation phase/state change, etc.

Inactive Publication Date: 2013-10-23
杭州量泰科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the national standard, a variable potential recorder is used to record the change of the internal temperature of the flask, and a stopwatch or an electronic timer is used to delay ignition

Method used

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  • Detection apparatus for liquid chemical product spontaneous combustion temperature
  • Detection apparatus for liquid chemical product spontaneous combustion temperature
  • Detection apparatus for liquid chemical product spontaneous combustion temperature

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Embodiment Construction

[0043] Embodiments of the present invention are given below in conjunction with the accompanying drawings, and the technical solutions of the present invention are described in detail.

[0044] Such as figure 1 , figure 2As shown, the device includes a crucible furnace temperature control system, an analog-to-digital conversion circuit, and a host computer processing system. The crucible furnace temperature control system includes a crucible furnace and a temperature controller. The analog-to-digital conversion circuit includes an A / D conversion circuit with a microcontroller as the core, a power supply circuit, a button circuit, a visible light sensor array, a communication circuit, and an LED display circuit. The machine processing system is a PC. The crucible furnace adopts ceramic fiber insulation material, and the resistance wire is used as the heating element. The crucible cover 1 is divided into two parts symmetrically on the left and right, with a hole in the middle,...

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Abstract

The invention discloses a detection apparatus for liquid chemical product spontaneous combustion temperature, in the current device, the reaction speed is slow and the large error can be generated due to artificial factors. The apparatus comprises an integral test detection apparatus, a data acquisition circuit and anaphase data treatment. The process comprises the following steps: starting the detection apparatus, placing an inflammable liquid chemical sample in the apparatus, carrying out real time data acquisition through various sensors, sending data to a computer and carrying out data processing to display the values to be measured such as flame spontaneous combustion temperature, cool flame spontaneous combustion temperature, time delay, air pressure value and initial reaction temperature. According to the invention, the security, accuracy and precision of the test are fully considered, the artificial portion can be maximally simplified, the measured value error caused by the manual operation can be reduced, and the each parameter of liquid chemical product spontaneous combustion can be rapidly detected with high efficiency.

Description

technical field [0001] The invention belongs to the technical field of temperature detection, and in particular relates to a device for measuring the spontaneous combustion temperature of liquid chemicals. Background technique [0002] Spontaneous combustion refers to the phenomenon that a substance burns by self-heating or external heat without the action of an external ignition source (such as a spark or flame). Under normal circumstances, a slow oxidation process will occur when combustible substances are in contact with air, but the speed is very slow, and the heat released is very small. At the same time, due to the continuous heat dissipation to the surrounding environment, it cannot emit light like combustion. If the temperature rises or other conditions change, the oxidation reaction speeds up and the heat released increases. If it cannot be completely dissipated, it will accumulate, and the temperature of the substance itself will gradually rise. When it reache...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N25/12
Inventor 王强王启肖琨范昕炜
Owner 杭州量泰科技有限公司
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