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A filter upstream volume measurement method and measurement system

A volume measurement and filter technology, which is applied in the field of filter upstream volume measurement method and measurement system, can solve the problems of filter diffusion flow or water intrusion, large results, wrong measurement results, etc., and achieve high accuracy and convenient measurement operation Effect

Active Publication Date: 2018-10-02
上海一鸣过滤技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Higher measured upstream volume values ​​can lead to higher diffused flow or water intrusion results in the filter, resulting in erroneous measurements

Method used

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  • A filter upstream volume measurement method and measurement system
  • A filter upstream volume measurement method and measurement system
  • A filter upstream volume measurement method and measurement system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A volumetric measurement system upstream of a filter, such as figure 1 As shown, including the filter 4, the reference tank 3 and the gas source 1, the filter element 5 completely wetted by the wetting liquid is installed in the filter 4, and the cavity between the filter element 5 and the filter 4 is the filter upstream 6 , the filter upstream 6, the reference tank 3 and the gas source 1 are sequentially connected through pipelines, only one shut-off valve S2 is set between the reference tank 3 and the filter upstream 6, and the reference tank 3 is respectively provided on the pipeline. A pressure sensor PA in communication with a pressure sensor PB in communication upstream 6 of the filter. The pressure sensor PA communicating with the reference tank 3 and the pressure sensor PB communicating with the filter upstream 6 are respectively located on both sides of the shut-off valve S2. A cut-off valve S1 and a pressure regulating valve 2 are arranged between the referen...

Embodiment 2

[0048] A volumetric measurement system upstream of a filter, such as figure 2 As shown, including the filter 4, the reference tank 3 and the gas source 1, the filter element 5 completely wetted by the wetting liquid is installed in the filter 4, and the cavity between the filter element 5 and the filter 4 is the filter upstream 6 , the filter upstream 6, the reference tank 3 and the gas source 1 are sequentially connected through pipelines, and two shut-off valves are arranged between the reference tank 3 and the filter upstream 6, respectively the shut-off valve S2 and the shut-off valve S3, and the shut-off valve A pressure sensor PA is provided between S2 and the shut-off valve S3. A cut-off valve S1 and a pressure regulating valve 2 are arranged between the reference tank 3 and the gas source 1, and the regulating valve can make the pressure control more precise.

[0049] Example 2 is different from Example 1 because in Example 1 two pressure sensors are used to measure ...

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Abstract

The invention relates to a filter upstream volume measurement method and measurement system. The measurement system comprises a filter, a reference tank and a gas source. A filter element completely wetted by a wetting solution is installed in the filter, a cavity between the filter element and the filter serves as a filter upstream part, and the filter upstream part, the reference tank and the gas source are sequentially connected through pipelines. At least one check valve is arranged between the reference tank and the filter upstream part, and a check valve is arranged between the reference tank and the gas source. Before upstream volume measurement, the pressure attenuation speed of the filter upstream part at certain pressure is measured, then upstream volume is measured, the pressure correction value of the filter upstream part with diffusion phenomenon influences removed is calculated according to the Fick law after balance pressure is obtained, the corrected balance pressure replaces actually-measured balance pressure, and the upstream volume is calculated. Compared with the prior art, measurement accuracy is high, and operation is convenient.

Description

technical field [0001] The invention relates to a filter parameter measurement method, in particular to a filter upstream volume measurement method and a measurement system. Background technique [0002] As a new technology, microfiltration membrane filter has been widely used in various industries. Especially in the pharmaceutical industry, as an effective method of removing bacteria, it is widely used in the production of pharmaceuticals that cannot be finally sterilized. Therefore, the quality of the filter is a key factor affecting the quality of the drug. [0003] In order to ensure the quality of the filter, the country clearly stipulates in the "Pharmacopia" that the integrity of the filter should be tested before and after the filter is used. As a non-destructive testing method, the integrity test can effectively confirm the retention effect of the filter by correlating with the results of the bacterial retention experiment. [0004] In order to eliminate the subj...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F17/00
CPCG01F17/00
Inventor 王鑫邵杰
Owner 上海一鸣过滤技术有限公司