A method and system for online verification of the accuracy of a solid flowmeter
A solid flowmeter and accuracy technology, which is applied in the field of on-line inspection methods and systems for the accuracy of solid flowmeters, can solve the problems of long time-consuming weighing data accumulation method, complicated detection device, interruption of pneumatic conveying process, etc.
Active Publication Date: 2020-12-25
ZHENJIANG MEASUREMENT VERIFICATION TEST CENT +1
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[0008] The object of the present invention is to provide an online inspection method and system for the accuracy of solid flowmeters, which are used to solve the problems of complex detection devices of traditional solid flowmeters and long time-consuming traditional weighing data accumulation methods, and are also used to solve the problems of current traditional During the inspection of the solid flowmeter inspection device, it is often necessary to interrupt the original pneumatic conveying process
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[0048] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.
[0049] Aspects of the invention are described in this disclosure with reference to the accompanying drawings, which show a number of illustrated embodiments. Embodiments of the present disclosure are not necessarily defined to include all aspects of the present invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of numerous ways, since the concepts and embodiments disclosed herein are not limited to any implementation. In addition, some aspects of the present disclosure may be used alone or in any suitable combination with other aspects of the present disclosure.
[0050] In order to solve the problems that the existing solid flowmeter inspection device has complex devices, long i...
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The invention provides a method and a system for on-line inspection of accuracy of a solid flowmeter. The method comprises the steps of firstly arranging a comparison pipeline with the same pipe diameter as a conveying pipeline where a to-be-inspected solid flowmeter is located; reading the powder mass flow of the solid flowmeter to be inspected; conveying the same powder in the to-be-inspected conveying pipeline to the comparison pipeline, and setting the powder discharging rate to be equal to the display numerical value of the to-be-inspected solid flowmeter; secondly, detecting static pressure of conveying air in the to-be-inspected conveying pipeline and the comparison pipeline, and adjusting the static pressure of the conveying air in the two pipelines to be the same; detecting wind speeds in the conveying pipeline to be inspected and the comparison pipeline, and adjusting the wind speeds of the two pipelines to be the same; finally, selecting pipe sections with the same length onthe conveying pipeline to be inspected and the comparison pipeline, and respectively detecting pressure drop signals of the two pipe sections; and comparing and analyzing the pressure drop characteristics on the two pipe sections to judge the accuracy of the to-be-inspected solid flowmeter. An inspection device designed according to the method is simple in structure. Rapid inspection of the solidflowmeter is achieved under the condition that conveying work of the to-be-inspected pipeline is not affected.
Description
technical field [0001] The invention relates to a flowmeter inspection method and system in the field of metering detection, in particular to an on-line inspection method and system for the accuracy of a solid flowmeter. Background technique [0002] The precise delivery of powder has important demands in the fields of chemical industry, power generation, metallurgy and other industries, such as the application of pulverized coal into the furnace in the process of coal gasification, and the injection of solid adsorbent in the process of thermal power flue gas treatment. Usually, a solid flow meter is used to monitor the mass flow of the powder, and at the same time adjust the dosage of the powder to control the mass flow of the powder. [0003] However, during the long-term use of the solid flowmeter, it is often necessary to recalibrate or check its accuracy. For example: 1. Due to factors such as powder particle cohesion and deposition, the accuracy will be affected; 2. If...
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IPC IPC(8): G01F25/00
CPCG01F25/00
Inventor 徐惠斌石建荣肖晖周轶缪春凤赵作广马驰朱海鹏
Owner ZHENJIANG MEASUREMENT VERIFICATION TEST CENT