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Usage method of gas chemical instability intelligent test device

An unstable and intelligent detection technology, applied in the direction of analyzing materials, instruments, etc., can solve the problems of increasing the risk of testing, lack of intelligent control and judgment, and achieve the effect of ensuring safety

Inactive Publication Date: 2015-04-22
王利兵
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chemical instability is a new classification item in the GHS system. At present, gas chemical instability test devices at home and abroad are mostly modified on the basis of explosion limit test systems, and manual records are used to determine the pressure change rate. Intelligent control and judgment such as pressure recording and gas discharge in the reaction cylinder, and at the same time, manual operation may be directly used during the experiment to increase the risk of the experiment

Method used

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  • Usage method of gas chemical instability intelligent test device
  • Usage method of gas chemical instability intelligent test device
  • Usage method of gas chemical instability intelligent test device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: Intelligent detection device for gas chemical instability.

[0015] Such as figure 1 An intelligent gas chemical instability detection device is shown, the device includes a test container (2), an electronic ignition device (6), a temperature control module (14), a pressure control module (15), an energy recording module (13) and The computer control terminal (25), the top of the test container (2) is provided with an air inlet (7) and an air outlet (8), and a closed test space is formed by fixing bolts (12), and the outside of the test container (2) is sequentially equipped with electric heating device (3) and heat insulation layer (4), and connect the pressure sensor (9) and the temperature sensor (10) in the container; the temperature sensor (10) in the container and the heater sensor (11) are in the temperature sensing control module (14 ) to adjust the test temperature; the electronic ignition device (6) ignites, the ignition source (5) ignites the t...

Embodiment 2

[0017] Embodiment 2: T-shaped air duct and explosion-proof disk fixing nut connection structure.

[0018] Such as figure 2 The connection structure between the T-shaped air duct and the explosion-proof disc fixing nut is shown, one end of the T-shaped air duct (16) is connected to the explosion-proof disc fixing nut (17) to fix the explosion-proof disc (26), and the explosion-proof disc (26) is placed with O-shaped sealing gaskets up and down. The explosion-proof disk fixing nut (17) is connected with the T-shaped air duct (16) through the thread (28) to fix the explosion-proof disk (26); the pressure of the test gas in the test container (2) rises after the reaction, and when the safe pressure value is exceeded, the explosion-proof Disc (26) bursts and releases pressure automatically.

[0019] Such as image 3 The explosion-proof disc fixing nut shown is thickened and the top is drilled to fix the explosion-proof disc (26).

Embodiment 3

[0020] Embodiment 3: The usage method of the gas chemical instability intelligent detection device.

[0021] Before the test starts, classify the test gas and determine it as a single gas or a mixed gas mixture. For the gas mixture that may have dangerous reactions between different gases, such as flammable gases and oxidizing gases, it is not considered to be chemically unstable. , such tests should not be performed. Usually the gas contains triple bonds, adjacent double bonds or conjugated double bonds, halogenated double bonds and strained rings, etc., which can be considered for chemical instability tests. Here, the chemical instability test at 65 °C and the corresponding initial pressure is taken as an example to illustrate. First, determine the initial pressure, which is the pressure at the maximum (loading) pressure of the gas at ambient temperature (gas at 65°C), which can be obtained by calculation or test. Before the gas is injected into the test container, use the...

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Abstract

The invention relates to a gas chemical instability intelligent test device, comprising a test container, an electronic ignition device, a temperature control module, a pressure control module, an energy recording module and a control terminal, wherein a gas inlet and a gas outlet are arranged at the top of the test container, a closed test space is formed in the test container by fixing bolts, an electric heater and a heat-insulation layer are sequentially arranged outside the test container and are connected with a pressure sensor and an in-container temperature sensor, and the in-container temperature sensor and a heater sensor regulate test temperature under the control of a temperature sensing control module. After ignition, gas chemical instability can be determined through recording of pressure in the test container. A T-shaped gas guide pipe is connected with the gas outlet, one end of the T-shaped gas guide pipe is connected with an explosion disk fixing nut, and the other end of the T-shaped gas guide pipe is connected with a gas outlet pipeline; and the gas outlet pipeline is provided with a direct exhaust branch and an exhaust branch with a vacuum pump. After reaction, the pressure of test gas in the test container rises up, and when the pressure is higher than a safe pressure value, an explosion disk is exploded automatically to release pressure.

Description

technical field [0001] The invention belongs to a chemical classification test device, in particular to a test device capable of completing the intelligent test of gas chemical stability. Background technique [0002] In order to reduce the hazards of chemicals and ensure the safety of people's lives and property, the United Nations has launched the "Global Harmonized System of Classification and Labeling of Chemicals" (GHS), making it a guide for countries to scientifically dispose of chemicals from a globally unified point of view text. The GHS system divides the hazards of chemicals into three categories, physical hazards, health hazards, and the environment, with a total of 28 items. Among them, the chemical instability of gases refers to the gas in the absence of any reactive accompanying conditions (such as air or oxygen). , causing hazardous reactions by self-decomposition resulting in an increase in temperature and / or pressure. To this end, the gas must be classifi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N7/00
Inventor 王利兵于艳军熊中强韩伟
Owner 王利兵
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