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Accurate measurement device of powder

A powder, precise measurement technology, applied in the direction of detecting fluid flow by measuring differential pressure, volume/mass flow generated by mechanical effects, etc., can solve the problems of not being widely used and large errors in measurement results

Inactive Publication Date: 2010-08-18
北京华泰美景科技发展有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0002] So far, for the monitoring of powder flow, the method of monitoring powder concentration in gas-solid two-phase flow is mostly used. These methods are affected by various external factors of two-phase flow and local point sampling is not representative. The error of the measurement result is relatively large, so it is not widely used

Method used

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  • Accurate measurement device of powder

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Embodiment Construction

[0008] Instructions attached figure 1 and attached figure 2 Middle: The box (1) of the powder precision measuring device is an airtight container, and the lower end of the feeding tube (2) has a (π / 6) angled oblique opening, which is convenient for powder discharge. The upper end of the dropping tube and the box body The lower ends of the shafts are respectively connected with the conveying pipes, the rotating shaft (5) passes through the box body and is supported by two bearings (4). One end of the rotating shaft is connected to the belt weight lever (7), and the other end is connected to a shaft that can rotate coaxially with the rotating shaft. The angle sensor (6) and the shift fork (8), the shift fork can convert the angle displayed by the angle sensor into the deformation amount of the compression spring (11), the middle section of the rotating shaft is connected with the measuring plate (3), and the measuring plate falls on the sealing Under the action of the powder g...

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Abstract

The invention proves an accurate measurement device of powder, which respectively monitors the flow rate of a single-phase flow before dual-phrase flows of gas and solid are formed by applying a principle that the torque of a lever with a heavy bob is balanced and an angle sensor can accurately monitor the rotation angle of a measuring plate, prevents various defects in monitoring the concentration of the powder in the dual-phrase flows of gas and solid. A monitoring method comprises the following steps of: directly monitoring the rotation angle of a rotating shaft; deriving a direct proportion value according to the structure of the accurate measurement device of the powder and the types of delivered powder; and multiplying the rotation angle with the direct proportion value to obtain the instant gravity flow rate of the powder. The monitoring method is simple, fast and accurate.

Description

technical field [0001] The invention relates to a powder fine measuring device with dual functions of air locking and fine powder flow measurement. Background technique [0002] So far, for the monitoring of powder flow, the method of monitoring powder concentration in gas-solid two-phase flow is mostly used. These methods are affected by various external factors of two-phase flow and local point sampling is not representative. The error of the measurement result is relatively large, so it is not widely used. [0003] In the era of low-carbon economy, especially coal-fired power plants urgently need a method that can not only transport the powder in the pipeline from the low-pressure area to the high-pressure area according to its own weight, but also can monitor the powder flow continuously and accurately in real time, without A monitoring method that causes the gas in the high-pressure area to blow-by to the low-pressure area to meet the needs of coal-fired power plants f...

Claims

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Application Information

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IPC IPC(8): G01F1/34
Inventor 孙家鼎
Owner 北京华泰美景科技发展有限公司
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