Test device for simulating protection time of canister to benzene vapor and use method

A test device and protection time technology, applied in the direction of simultaneous control of multiple variables, non-electric variable control, instruments, etc., can solve the problems of inability to change the temperature and humidity of benzene vapor, difficulty in changing the concentration of benzene vapor, high detection cost, etc., to save research Cost, comprehensive test conditions, and high safety effects

Active Publication Date: 2021-08-06
HUBEI HUAQIANG HIGH TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned prior art has adopted the mode of straight-through benzene vapor, and it is relatively difficult to change the concentration of benzene vapor, which needs to be diluted by adding air. In addition, benzene vapor is prone to escape and leakage during the process of passing through, and during t...

Method used

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  • Test device for simulating protection time of canister to benzene vapor and use method
  • Test device for simulating protection time of canister to benzene vapor and use method
  • Test device for simulating protection time of canister to benzene vapor and use method

Examples

Experimental program
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Effect test

Embodiment 1

[0043] like Figure 1~Figure 8 Among them, a test device for simulating the protection time of a canister against benzene vapor comprises a box body 12, which is divided into a benzene generation chamber 20, a constant temperature chamber 21 and a humidity generation chamber 22; the benzene generation chamber 20 and the humidity generation chamber 22; Humidity generation chamber 22 is connected with air source interface 23; Benzene generation chamber 20 is provided with reagent bottle 3 and heating system; Humidity generation chamber 22 is provided with humidification system; Constant temperature chamber 21 is provided with mixing tank 13 and A simulated canister 14; a man-machine interface 16 and a switching power supply 17 are arranged outside the constant temperature chamber 21.

[0044] Further, the switching power supply 17 converts the 220V external power supply into a suitable voltage for use by the test device.

[0045] Preferably, the heating system includes a heatin...

Embodiment 2

[0058] A method for using a test device for simulating the protection time of a canister against benzene vapor, comprising the following steps:

[0059] S1, the first variable pump 1, the first heater 2, the first flow sensor 4, the first proportional valve 5, the humidity sensor 6, the second variable pump 7, the humidifier 8, the controller 9, and the second heater 10 , fan 11, first VOC sensor module 15, man-machine interface 16, second proportional valve 18, second flow sensor 19, second VOC sensor module 25 and temperature sensor 26 initialization;

[0060] S2, the controller 9 collects data from the humidity sensor 6, the first flow sensor 4, the first VOC sensor module 15, the second flow sensor 19, the second VOC sensor module 25 and the temperature sensor 26, so that the second heater 10 and the fan 11 start up;

[0061] S3, control the operation of the fan 11 through the feedback data of the temperature sensor 26, so that the temperature of the constant temperature ...

Embodiment 3

[0069] Work process and working principle of the present invention are:

[0070] When it is necessary to test the protection time of the canister against benzene vapor, the operator first fills the simulated canister with activated carbon of appropriate weight and thickness according to the actual canister, pours the benzene liquid reagent into the reagent bottle 3, and the gas source The interface 23 is connected to an external air source, and the second variable pump 7 is connected to pure water. During the working process, the controller 9 communicates with the man-machine interface 16, and the man-machine interface 16 can send commands to the controller 9 to adjust the humidity, concentration and flow of the intake air. The controller 9 collects data from the humidity sensor 6, the first flow sensor 4, the first VOC sensor module 15, the second flow sensor 19, the second VOC sensor module 25, and the temperature sensor 26; the controller 9 outputs signals to the second hea...

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Abstract

The invention discloses a test device for simulating protection time of a canister to benzene vapor and a use method. The test device comprises a box body, and the interior of the box body is divided into a benzene generation chamber, a constant-temperature chamber and a humidity generation chamber; the benzene generation chamber and the humidity generation chamber are both connected with the gas source interface; a reagent bottle and a heating system are arranged in the benzene generating chamber; a humidifying system is arranged in the humidity generating chamber; a mixing tank and a simulated canister are arranged in the constant-temperature chamber; and a human-computer interface and a switching power supply are arranged outside the constant-temperature chamber. The device can perform simulation test on benzene vapor protection time of different canister products, test the benzene vapor protection time of the canister under the conditions of different temperature and humidity, air inlet flow and concentration and different carbon layer thicknesses, does not need to use a canister finished product, saves research cost, is accurate and stable in test condition control, is integrally designed, the device can be integrally controlled, is simple to operate, and is suitable for scientific research on the protection time of the canister on the benzene vapor.

Description

technical field [0001] The invention belongs to the field of test devices for a canister against benzene vapor, in particular to a test device for simulating the protection time of a canister against benzene vapor and a use method thereof. Background technique [0002] At present, the existing canister testing devices in the market have a low degree of automation. When conducting research on the protection time of canisters, it is necessary to use finished canisters for scientific experiments. At the same time, it is necessary to manually calculate the protection time. Need to use finished canisters, and the test cost is high; most of the test devices are composed of multiple independent devices, which is not conducive to the test conditions and the overall control of the device. Each device needs to be controlled and operated independently, which is not conducive to the operation and use of the user. It is difficult to achieve stable test conditions, and the test conditions...

Claims

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Application Information

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IPC IPC(8): G05D27/02
CPCG05D27/02
Inventor 唐琪陈丑和唐国庆陈洁唐三水范燨黄娟
Owner HUBEI HUAQIANG HIGH TECH CO LTD
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