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Device and method for testing liquid jet static electricity accumulation

A test method, static electricity accumulation technology, applied in the direction of electrostatic field measurement, etc., can solve problems such as economic losses, casualties, fire and explosion, and achieve the effects of stable performance, compact design structure, and simple operation

Active Publication Date: 2020-01-24
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Flammable industrial liquids, such as chemical reagents, aviation kerosene, gasoline, etc., accumulate static charge when they are ejected at high speed from openings such as nozzles and container cracks. Once the discharge conditions are met, electrostatic discharge will occur, which can easily cause fire and explosion accidents. Economic loss and casualties

Method used

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  • Device and method for testing liquid jet static electricity accumulation
  • Device and method for testing liquid jet static electricity accumulation
  • Device and method for testing liquid jet static electricity accumulation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A liquid jet static electricity accumulation test method, the method steps are as follows:

[0033](1) First install the 0.8mm stainless steel atomizing nozzle required for the experiment, close the first valve 5 between the stainless steel pressure storage tank and the nozzle, then put 250ml of absolute ethanol into the feed liquid bottle, and open the stainless steel pressure storage tank. A second valve 9 between the tank and the peristaltic pump;

[0034] (2) Turn on the peristaltic pump. The anhydrous ethanol liquid in the feed liquid bottle is pumped into the stainless steel pressure storage tank along the pipeline by the power provided by the peristaltic pump. The feeding rate of the peristaltic pump is 50ml / min. Then close the second valve 9;

[0035] (3) Turn on the digital display temperature controller, control the electric power of the electric heating belt, control the temperature rise of the liquid in the stainless steel pressure storage tank, set the tem...

Embodiment 2

[0046] The difference from Example 1 lies in the injection pressure parameters of absolute ethanol in step 6: when the injection pressure parameters are 0.4MPa, 0.5MPa and 0.6MPa respectively, the experimental results are shown in Table 2-Table 4.

[0047] Table 2 Static electricity accumulation of absolute ethanol liquid under 0.4MPa injection pressure

[0048]

[0049] Table 3 Static electricity accumulation of absolute ethanol liquid under 0.5MPa injection pressure

[0050]

[0051] Table 4 Static electricity accumulation of absolute ethanol liquid under 0.6MPa injection pressure

[0052]

[0053] It can be seen from Table 1-Table 4 that the average charge-to-mass ratio Q / m of absolute ethanol liquid is 0.80 nC.g under the injection pressure of 0.3MPa, 0.4MPa, 0.5MPa and 0.6MPa -1 , 1.21 nC.g -1 , 1.73 nC.g -1 , and 2.32nC.g -1 , with the increase of injection pressure, the accumulation of static electricity increases gradually.

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Abstract

The invention relates to a liquid injection electrostatic cumulative amount test device and method and belongs to the technical field of electrostatic testing. The liquid injection electrostatic cumulative amount test device includes a liquid injection system, a temperature control system and an electrostatic test system, is compact in design structure, stable in performance and easy to operate, can test an industrial liquid injection electrostatic cumulative amount parameter, and develops an influence law of liquid temperature, injection pressure, injection time, and nozzle characteristics onthe electrostatic cumulative amount. The liquid injection electrostatic cumulative amount test device and method has an important practical value on the electrostatic charging performance and safetyperformance evaluation in an industrial liquid injection process.

Description

technical field [0001] The invention belongs to the technical field of static electricity testing, in particular to a device and method for testing liquid jet static electricity accumulation. Background technique [0002] Liquid jet electrification means that when liquid particles are ejected from the nozzle at high speed, there is a rapid contact and separation electric layer between the liquid particles and the nozzle, which will cause the nozzle and the liquid particles to drive electrostatic charges of different signs. When the liquid under high pressure is ejected from the nozzle nozzle, it is in a bundle shape, and when it comes into contact with the air flow, it splits into many small droplets, among which the relatively large droplets settle quickly, and other tiny droplets stay in the air to form A foggy cloud of small droplets with a large electrical charge. Flammable industrial liquids, such as chemical reagents, aviation kerosene, gasoline, etc., accumulate stat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R29/12
CPCG01R29/12
Inventor 李小东王恒周鹏王彩玲王晶禹王新全燕翔刘磊
Owner ZHONGBEI UNIV