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A Continuous Electrostatic Monitor for Powder

A monitor and electrostatic detection technology, which is applied in the direction of instruments, measuring devices, and measuring electrical variables, etc., can solve the problems of powder mass deviation and the reduction of charge-to-mass ratio accuracy of electrostatic monitors, and achieve stable control, improved monitoring response speed, Effects of improved service life and reliability

Active Publication Date: 2020-08-25
北京普惠实华科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the powder quality is calculated and evaluated, and the actual real-time powder quality may have deviations, so the final charge-to-mass ratio accuracy of the electrostatic monitor is reduced

Method used

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  • A Continuous Electrostatic Monitor for Powder
  • A Continuous Electrostatic Monitor for Powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] like figure 1 As shown, a powder electrostatic continuous monitor consists of a connecting flange 1, an outer cylinder 2, an inner cup of a sampling cup 3, an insulating layer 4, an outer cup of a sampling cup 5, an explosion-proof chamber 6, an inner cup electrical lead-out structure 7, and a sampling cup The support member 9 is composed.

[0027] There are two connecting flanges 1, which are fixedly connected to both ends of the outer cylinder 2; the outer cylinder 2 is a metal cylinder with an open cylindrical structure, and the side wall of the outer cylinder 2 is provided with an electrical outlet hole 8 for the outer cylinder; The inner cup 3 of the sampling cup, the insulating layer 4, and the outer cup 5 of the sampling cup form an inverted cone-shaped sampling cup, which is located inside the outer cylinder 2 and is close to the edge of the pipe. The insulating layer 4 is located outside the inner cup 3 of the sampling cup, and the outer cup 5 of the sampling c...

Embodiment 2

[0032] like figure 2 As shown, the structure of embodiment two is similar to that of embodiment one, the difference is that the outer cup 5 of the sampling cup has the same diameter as the inlet edge of the inner cup 3 of the sampling cup, and the outer cup wall of the outer cup 5 of the sampling cup is a cylindrical surface of equal diameter .

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Abstract

The invention relates to a powder static electricity continuous monitor which is formed by two connecting flanges, an outer cylinder, a sampling cup inner cup, an insulating layer, a sampling cup outer cup, an explosion-proof chamber, an inner cup electric lead-out structure and a sampling cup support member. The connecting flanges are fixedly connected to two ends of the outer cylinder. The outercylinder is a tubular metal cylinder with openings, and a side wall of the outer cylinder is provided with an outer cylinder electric lead-out hole. An inverted cone-frustum-shaped sampling cup is formed by the sampling cup inner cup, the insulating layer, and the sampling cup outer cup and is in the outer cylinder and is close to an edge of a pipe. The insulating layer is located at the outsideof the sampling cup inner cup, and the sampling cup outer cup is located at the outside of the insulating layer. The sampling cup outer cup is welded and fixed to the outer cylinder through the sampling cup support member. The explosion-proof chamber is outside the outer cylinder of the monitor and is internally equipped with an electrostatic detection board for charge detection, and the electrostatic detection board is provided with a relay contact. The sampling cup inner cup allows an electric connection to pass through the insulating layer through the inner cup electric lead-out structure,the electric connection passes the sampling cup outer cup and then passes the outer cylinder electric lead-out hole, and the electric connection is connected to electrostatic detection board in the explosion-proof chamber.

Description

technical field [0001] The invention relates to the technical field of powder material pneumatic transmission, in particular to a powder electrostatic continuous monitor. Background technique [0002] In the production process of polyolefin powder 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 and crushing. At the same time, polyolefins may also be accompanied by monomer flammable gases represented by ethylene and propylene escaping, and the critical value of no electrostatic discharge in the silo is 0.1-0.2μC / kg. The above situation causes static electricity The accidents of dust explosion in polyolefin silo caused by electric discharge are high. [0003] According to the statistics of 70 electrostatic dust explosion accidents in 13 sets of equipment in 10 domestic enterprises, 62 of which we...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R29/24
CPCG01R29/24
Inventor 彭辉李海龙周建军龚华肖会民
Owner 北京普惠实华科技有限公司
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