Full-automatic static elimination system

A static elimination and fully automatic technology, applied in the direction of static electricity, electrical components, measuring electrical variables, etc., can solve the problems of over-charge of silo charge, high residual electrostatic charge, and potential safety hazards, so as to improve service life and reliability , The effect of increasing the convergence speed of power dissipation and improving the monitoring response speed

Pending Publication Date: 2018-07-24
CHINA PETROLEUM & CHEM CORP +1
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AI Technical Summary

Problems solved by technology

The existing technology has poor reliability and low service life
[0007] In addition, the mechanical constant volume adopts the cylinder sampling method, which has a long cycle, discontinuous sampling, no data area in the middle of the sampling, poor tracking of material charge changes, power dissipation based on empirical values, poor convergence, and high residual electrostatic charge

Method used

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  • Full-automatic static elimination system
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Embodiment Construction

[0026] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0027] Such as figure 2 As shown, the fully automatic static elimination system is composed of a workstation 1, a PLC control cabinet 2, a sub-control box 3, a consumer 4, and a monitor 5.

[0028] The consumer 4 is a bipolar ion wind static eliminator, which receives the control signal from the PLC control cabinet 2, and outputs positive ion wind or negative ion wind with controllable intensity; the material conveying state detector is configured in the consumer 4, It can be judged whether there is a material transfer. The consumer 4 is a positive pressure explosion-proof structure, has obtained explosion-proof certification, and accepts the instrument air that has been depressurized from the sub-control box 3, a...

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Abstract

A full-automatic static elimination system comprises a workstation, a PLC control cabinet, a branch control box, a de-electrification device and a monitor, wherein the de-electrification device is a dual-polarity ionic wind-type static de-electrification device and is used for receiving a control signal of the PLC control cabinet, an explosion-proof chamber is arranged on the monitor, a static charge detection board is arranged in the explosion-proof chamber, the branch control box is used for processing instruction air provided by a factory, transmitting the air to the de-electrification device after filtering, purification and pressure reduction, simultaneously connecting an ionic wind control signal sent from the PCL control cabinet to the de-electrification device and receiving pressure, returned back from the de-electrification device, of a pressure feedback pipe to the PLC control cabinet, the PLC control cabinet is used for acquiring a material charge signal of the monitor, acquiring a material transmission state signal transmitted from the de-electrification device, calculating ionic wind polarity and strength output from the de-electrification device and eliminating staticcharge brought by a material with ionic wind, the workstation is provided with a liquid crystal display, various running conditions of the static elimination system can be monitored in real time, anddatabase storage and inquiry on a historical running curve can be performed.

Description

technical field [0001] The invention belongs to the technical field of pellet pneumatic transmission, and in particular relates to a fully automatic static elimination system. Background technique [0002] In the production process of polyolefin materials represented by PE and PP, the pneumatic conveying link can make the polyolefin pellets have 1-5μC / kg static electricity, and at the same time, the pellet pneumatic conveying link contains a certain amount of wire drawing, broken particles, etc. Polyolefin dust. At the same time, polyolefin may also be accompanied by ethylene, propylene as the representative monomer combustible gas escaping, and the critical value of no electrostatic discharge in the silo is 0.1-0.2μC / kg. The above situation causes electrostatic discharge. Dust explosion accidents in polyolefin silos are high. [0003] According to the statistics of 70 electrostatic dust explosion accidents in 13 sets of equipment in 10 domestic enterprises, 62 of them were...

Claims

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Application Information

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IPC IPC(8): H05F3/06G01R29/24
CPCH05F3/06G01R29/24
Inventor 李海龙彭辉周建军彭秀凯龚华肖会民
Owner CHINA PETROLEUM & CHEM CORP
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