CN-224216376-U - Analytical instrument preprocessing system

Abstract

The utility model provides an analysis meter preprocessing system, including pneumatic three-way valve, first glass rotameter, three-way ball valve, first filtration relief pressure valve, and two-way needle valve, pneumatic three-way valve's export is through pipeline and flow cell intercommunication, pneumatic three-way valve's first entry, first glass rotameter, and three-way ball valve's export loops through pipeline intercommunication, three-way ball valve's first entry, first filtration relief pressure valve, and air delivery device loops through pipeline intercommunication, three-way ball valve's second entry passes through pipeline and standard air delivery device intercommunication, pneumatic three-way valve's second entry, two-way needle valve, and steam delivery device loops through pipeline intercommunication, pneumatic three-way valve's power actuating mechanism passes through pipeline and instrument's first gas outlet intercommunication. The utility model can ensure that the service life of the analysis instrument is long, the use effect is good, and the use cost can be reduced.

Inventors

• LIN GUANGHAI
• Lin Zanqing
• LIN MENG
• TANG HAIQIONG
• LIN GUANGYIN
• YE XIAODONG
• HE XIANG
• WANG YUZHAO
• NIE HAIYING

Assignees

• 沈海防爆科技有限公司

Dates

Publication Date

20260508

Application Date

20250403

Claims (7)

1. 1. The analysis instrument pretreatment system is characterized by comprising a pneumatic three-way valve (1), a first glass rotameter (2), a three-way ball valve (3), a first filtering pressure reducing valve (4) and a two-way needle valve (5), wherein an outlet of the pneumatic three-way valve (1) is communicated with a flow cell through a pipeline, a first inlet of the pneumatic three-way valve (1), the first glass rotameter (2) and an outlet of the three-way ball valve (3) are sequentially communicated through the pipeline, a first inlet of the three-way ball valve (3), the first filtering pressure reducing valve (4) and an air conveying device are sequentially communicated through the pipeline, a second inlet of the three-way ball valve (3) is communicated with a standard air conveying device through the pipeline, the second inlet of the pneumatic three-way valve (1), the two-way needle valve (5) and the steam conveying device are sequentially communicated through the pipeline, and a power executing mechanism of the pneumatic three-way valve (1) is sequentially communicated with a first air outlet of an instrument (6) through the pipeline.
2. 2. The analytical instrument pretreatment system according to claim 1, wherein the pretreatment system further comprises a steam pressure regulating valve (7) and a first three-way joint (8), an outlet of the steam pressure regulating valve (7) is communicated with the steam conveying device through a pipeline, the first three-way joint (8) is arranged on a communication pipeline between an inlet of the two-way needle valve (5) and the steam conveying device, and an inlet of the steam pressure regulating valve (7) is communicated with the first three-way joint (8) through a pipeline.
3. 3. The analytical instrument pretreatment system according to claim 2, further comprising a first radial pressure gauge (9), a second radial pressure gauge (10), a second three-way joint (11) and a third three-way joint (12), wherein the second three-way joint (11) is arranged on a communication pipeline between the second inlet of the pneumatic three-way valve (1) and the outlet of the two-way needle valve (5), the first radial pressure gauge (9) is communicated with the second three-way joint (11) through a pipeline, the third three-way joint (12) is arranged on a communication pipeline between the outlet of the steam pressure regulating valve (7) and the steam conveying device, and the second radial pressure gauge (10) is communicated with the third three-way joint (12) through a pipeline.
4. 4. The analytical instrument pretreatment system according to claim 3, wherein two-way connectors (13) are further arranged between the first radial pressure gauge (9) and the connected pipeline and between the second radial pressure gauge (10) and the pipeline which are connected in a communicating manner, and the inner parts of the outer ends of the two-way connectors (13) are correspondingly connected with the first radial pressure gauge (9) and the second radial pressure gauge (10) through NPTF dry sealing taper pipe threads.
5. 5. The analytical instrument pretreatment system according to claim 1, further comprising a second glass rotameter (14) and a fourth three-way joint (15), wherein the fourth three-way joint (15) is arranged on a communication pipeline between the first inlet of the three-way ball valve (3) and the first filtering and pressure reducing valve (4), and the ejector, the second glass rotameter (14) and the fourth three-way joint (15) are sequentially communicated through pipelines.
6. 6. The analytical instrument pretreatment system according to claim 1, wherein the pretreatment system further comprises a normally closed two-way pneumatic valve (16), the normally closed two-way pneumatic valve (16) is arranged on a communication pipeline between a first inlet of the pneumatic three-way valve (1) and the first glass rotameter (2), and a power actuating mechanism of the normally closed two-way pneumatic valve (16) is communicated with a second air outlet of the instrument (6) through the pipeline.
7. 7. The analytical instrument pretreatment system according to claim 6, further comprising a second filtering pressure-reducing valve (17) and a fifth three-way joint (18), wherein the fifth three-way joint (18) is arranged on a communication pipeline between the first filtering pressure-reducing valve (4) and the air conveying device, and the instrument (6) and the second filtering pressure-reducing valve (17) are communicated with the fifth three-way joint (18) sequentially through pipelines.

Description

Analytical instrument preprocessing system Technical Field The utility model relates to the technical field of chemical industry detection, in particular to an analysis instrument pretreatment system. Background The gas analysis instrument is an indispensable monitoring device in the fields of chemical production, environmental protection and the like, and is a fundamental task of process analysis, wherein the method is used for rapidly, accurately and stably analyzing the component parameters of the industrial process for a long period. At present, after the sampling probe of the analysis instrument is used for a long time, the sampling probe is easy to erode by a sample, so that the service life of the analysis instrument is reduced, the hidden danger of measurement errors exists, the working quality of the analysis instrument is reduced, the cost is greatly increased due to frequent replacement, and the normal production operation is influenced due to frequent replacement. Disclosure of utility model Aiming at the defects of the prior art, the utility model aims to provide an analysis instrument pretreatment system which can ensure that the service life of an analysis instrument is long, the use effect is good and the use cost can be reduced. The technical scheme includes that the analysis instrument pretreatment system comprises a pneumatic three-way valve, a first glass rotameter, a three-way ball valve, a first filtering pressure reducing valve and a two-way needle valve, wherein an outlet of the pneumatic three-way valve is communicated with a flow cell through a pipeline, a first inlet of the pneumatic three-way valve, the first glass rotameter and an outlet of the three-way ball valve are sequentially communicated through the pipeline, a first inlet of the three-way ball valve, the first filtering pressure reducing valve and an air conveying device are sequentially communicated through the pipeline, a second inlet of the three-way ball valve is communicated with a standard air conveying device through the pipeline, a second inlet of the pneumatic three-way valve, the two-way needle valve and the steam conveying device are sequentially communicated through the pipeline, and a power executing mechanism of the pneumatic three-way valve is communicated with a first air outlet of the instrument through the pipeline. When the calibration is needed, the air conveying device and the first filtering and reducing valve are opened, the first inlet and the outlet of the three-way ball valve are communicated with the first filtering and reducing valve, the conveyed standard air is conveyed to the pneumatic three-way valve through the three-way ball valve and then conveyed to the pneumatic three-way valve through the first glass rotameter, the power actuating mechanism of the pneumatic three-way valve is controlled by the meter, the first inlet and the outlet on the pneumatic three-way valve are communicated, so that the discharged air is conveyed to the circulating cell, the sampling probe of the analysis meter is used for sampling, the zero point is calibrated, the air conveying device and a corresponding loop are closed, the standard air conveying device is opened, the second inlet and the outlet of the three-way ball valve are communicated with the standard air conveying device, the conveyed standard air is conveyed to the pneumatic three-way valve through the three-way ball valve through the first glass rotameter, the first inlet and the outlet on the pneumatic three-way valve are conducted again through the meter, the standard air is conveyed to the circulating cell through the meter, the sampling probe is effectively cleaned after the zero point calibration is completed, the corresponding air conveying device is opened, the three-way valve is effectively controlled by the three-way valve is prevented from being opened, the sampling probe is cleaned when the corresponding air conveying device is opened, the three-way valve is opened, the corresponding air conveying device is cleaned, the air conveying device is cleaned, and the steam is cleaned through the corresponding air conveying valve is cleaned, and the three-way valve is cleaned, and the air conveying device is cleaned, and the corresponding valve is opened, and the air valve is opened, can monitor the gas flow who arranges in the flow cell, prevent that too low flow or too big flow from influencing the life of analysis instrument and the accuracy of calibration result, the preprocessing of above-mentioned structure sets up, has realized the purpose to sample probe calibration and abluent, has this analysis instrument that preliminary treatment washed the hair long service life, and the result of use is also good, can also reduce use cost. Further, the pretreatment system further comprises a steam pressure regulating valve and a first three-way joint, wherein an outlet of the steam pressure regulating valve is communicated with the steam conveying d