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One-step ventilation rate standard rod period verification device and verification method therefor

A technology of period check and standard rod, which is applied in the direction of measuring device, permeability/surface area analysis, suspension and porous material analysis, etc., can solve the problem of no corresponding period check standard device and check method, and achieve strong measurement reliability , high work efficiency

Active Publication Date: 2018-12-25
CHINA TOBACCO HENAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the tobacco industry generally uses a soap film flowmeter as a standard to verify the ventilation rate standard rod, but there is no corresponding standard device and verification method for period verification

Method used

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  • One-step ventilation rate standard rod period verification device and verification method therefor
  • One-step ventilation rate standard rod period verification device and verification method therefor
  • One-step ventilation rate standard rod period verification device and verification method therefor

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Embodiment Construction

[0026] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0027] see figure 1 . The structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to cooperate with the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the conditions for the implementation of the present invention. Therefore, there is no technical substantive meaning, and any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope of the disclosure of the present invention without affecting the functions and objectives of the present invention. within the scope of technical content. At the same time, terms such as "...

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Abstract

The invention discloses a one-step ventilation rate standard rod period verification device and a verification method. The period verification device comprises a quantitative negative pressure device,a clamp, a first differential pressure sensor, a second differential pressure sensor, a third differential pressure sensor, a first flow sensor, and a second flow sensor. The clamp is provided with afirst air inlet, an air outlet, and a second air inlet; the first flow sensor is connected in series between an air inlet end of the quantitative negative pressure device and an air outlet end of theclamp; the first differential pressure sensor and the second differential pressure sensor are respectively connected to an air outlet end and an air inlet end of the first flow sensor; the second airinlet is connected to the second flow sensor; the second differential pressure sensor is connected in parallel between the first air inlet and the second air inlet; the second flow sensor is connected to the second air inlet of the clamp; and the third differential pressure sensor is connected to an air outlet end of the second flow sensor. Two flow sensors are used as standards to measure totalflow and ventilation flow of the standard rod respectively, and to measure the standard rod value in one step.

Description

technical field [0001] The invention belongs to the technical field of calibration of standard parts of cigarette testing instruments, and in particular relates to a one-step ventilation rate standard bar checking device and checking method. Background technique [0002] Cigarette ventilation rate includes filter tip ventilation rate, paper ventilation rate, and total ventilation rate. It is usually measured by cigarette ventilation rate tester and cigarette physical performance comprehensive test bench. Cigarette ventilation rate not only affects the internal quality of cigarette products, but also changes the smoke quality. parameter. The ventilation rate standard rod is a standard part used in the cigarette ventilation rate testing instrument. The ventilation rate standard rod determines the accuracy of the cigarette ventilation rate measurement data. It is calibrated once a year as required to ensure the traceability of the ventilation rate standard rod value. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08G01N7/10
CPCG01N7/10G01N15/0826Y02E30/30
Inventor 崔廷苏东赢齐海英李浩亮王红霞吴艳艳王璐王蓓蓓姜慧娟刘金晓
Owner CHINA TOBACCO HENAN IND
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