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

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...

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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 the recovery process of the device, which is highly dangerous; and the device cannot change the temperature and humidity of the benzene vapor, and the device uses finished canisters for detection, and the detection cost is relatively high. Canisters with different carbon layer thickness cannot be detected by a set of equipment

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