CN210037114U - Measuring system for measuring sealing performance of sealing box by oxygen-containing method - Google Patents
Measuring system for measuring sealing performance of sealing box by oxygen-containing method Download PDFInfo
- Publication number
- CN210037114U CN210037114U CN201921182427.2U CN201921182427U CN210037114U CN 210037114 U CN210037114 U CN 210037114U CN 201921182427 U CN201921182427 U CN 201921182427U CN 210037114 U CN210037114 U CN 210037114U
- Authority
- CN
- China
- Prior art keywords
- seal box
- oxygen
- oxygen content
- measuring
- box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000001301 oxygen Substances 0.000 title claims abstract description 39
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 39
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000007789 sealing Methods 0.000 title claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000007789 gas Substances 0.000 claims abstract description 17
- 239000011261 inert gas Substances 0.000 claims abstract description 8
- 230000002000 scavenging effect Effects 0.000 claims 2
- 238000005259 measurement Methods 0.000 abstract description 4
- 238000005086 pumping Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 30
- 229910052757 nitrogen Inorganic materials 0.000 description 15
- 238000001514 detection method Methods 0.000 description 8
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 101100204059 Caenorhabditis elegans trap-2 gene Proteins 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000006392 deoxygenation reaction Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model relates to a measurement system of seal box leakproofness is surveyed to oxygen method, including air supply, water trap, circulating fan, deoxidization subassembly, vacuum pump and oxygen content tester. The air supply is connected with the dewatering device, the dewatering device is connected with the tested seal box and the deoxidization assembly respectively, the tested seal box is connected with the circulating fan and the oxygen content tester respectively, and the circulating fan is connected with the deoxidization assembly and the vacuum pump respectively. The method comprises the steps of filling a tested seal box with inert gas in a gas source, repeatedly filling the inert gas for replacement, deoxidizing and dehydrating the gas in the tested seal box, wherein the oxygen content meets the requirements of installation and use conditions of an oxygen content analyzer, pumping out the gas in the tested seal box by using a vacuum pump, stopping vacuumizing after the vacuum degree of a system meets the requirements, and judging the tightness of the tested seal box by measuring and calculating the leakage rate of the oxygen content in hours by using an oxygen content tester.
Description
Technical Field
The utility model relates to a detection area, especially the measurement system of seal box leakproofness is surveyed to oxygen method.
Background
The sealing box is a storage device for special products, and has high requirements on sealing performance, so the sealing box needs to be detected after production or before use. The existing detection method for the sealing performance of the sealing box has no mature detection means, the sealing box is completely immersed into water to detect the sealing performance of the sealing box by adopting manual immersion operation at first, but the detection error is large and the detection efficiency is low by adopting the manual immersion operation method, and the sealing box needs to be dried after being immersed into water, so that the process is complex and the working procedures are multiple.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's shortcoming, provide a detect clean convenient detecting system of precision height, testing process.
The purpose of the utility model is realized through the following technical scheme: the utility model provides a measurement system of seal box leakproofness is surveyed to oxygen method, it includes air supply, water trap, circulating fan, deoxidization subassembly, vacuum pump and oxygen content tester, the air supply is connected with water trap, water trap respectively with be surveyed the seal box and deoxidization subassembly is connected, surveyed the seal box and be connected with circulating fan and oxygen content tester respectively, circulating fan respectively with deoxidization subassembly and vacuum pump connection.
The gas source uses inert gas: high purity nitrogen or argon, 99.99% nitrogen being used in this project. . Nitrogen is preferred as the gas source because nitrogen is an inert gas and is inexpensive.
The deoxidization subassembly includes two the same deoxidization device, two deoxidization devices all are connected with water trap and circulating fan respectively.
The device also comprises a pressure detector and a water content detector, wherein the pressure detector and the water content detector are connected with the detected seal box.
The vacuum pump is connected with the pressure release valves, and the tested seal box is connected with the pressure release valves.
The utility model has the advantages of it is following:
1. the sealing performance of the sealing box is detected by a method for detecting the change of the oxygen content in the sealing box, and the detection precision is high; the measuring system can be repeatedly used for a plurality of times for complete skid-mounting, and has convenient and simple use and low use cost. Meanwhile, the method is also the basis for reliably ensuring the quality of the tested sealed box product;
2. the sealing box is filled with the inert gas, so that the detection process is pollution-free, the detected sealing box can be used after detection is finished, and the subsequent treatment process is not needed.
Drawings
Fig. 1 is a schematic structural view of the present invention;
in the figure: the method comprises the following steps of 1-gas source, 2-water removal device, 3-circulating fan, 4-deoxidizing component, 5-vacuum pump, 6-oxygen content tester, 7-pressure tester, 8-water content tester and 9-pressure relief valve.
Detailed Description
The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.
As shown in figure 1, the measurement system of seal box leakproofness is surveyed to oxygen method, it includes that it includes air supply 1, water trap 2, circulating fan 3, deoxidization subassembly 4, vacuum pump 5 and oxygen content tester 6, air supply 1 passes through the pipeline and is connected with water trap 2, water trap 2 is connected with surveyed seal box and deoxidization subassembly 4 through the pipeline respectively, is surveyed the seal box and passes through the pipe connection with circulating fan 3 respectively and oxygen content tester 6 is connected, circulating fan 3 is connected with deoxidization subassembly 4 and vacuum pump 5 through the pipeline respectively.
The measured seal box is also provided with an exhaust port, an exhaust valve is arranged on the exhaust port, valves are arranged on the pipelines of the measured seal box and the dewatering device 2, and valves are arranged on the connecting pipelines of the measured seal box and the circulating fan 3.
And valves are arranged on pipelines among the air source 1, the water removal device 2, the circulating fan 3, the deoxidizing component 4 and the vacuum pump 5.
Preferably, the gas source 1 uses an inert gas: high purity nitrogen or argon, 99.99% nitrogen being used in this project. Nitrogen is preferred as the gas source because nitrogen is an inert gas and is inexpensive.
The oxygen removing assembly 4 comprises two identical oxygen removing devices which are connected with the water removing device 2 and the circulating fan 3 respectively.
The device also comprises a pressure detector 7 and a water content detector 8, wherein the pressure detector 7 and the water content detector 8 are connected with the tested seal box.
The vacuum pump 5 is connected with the pressure release valves 9, and the tested seal box is connected with the pressure release valves 9. The relief valve 9 of being connected with vacuum pump 5 can guarantee to be surveyed the seal box and can not be because of internal pressure low and damage when taking gas out, and the relief valve 9 of direct being connected with being surveyed the seal box can guarantee to be surveyed the seal box and can not damage because of internal pressure is too high.
The working process of the utility model is as follows:
before testing, opening a valve between the air source 1 and the dewatering device 2, a valve between the dewatering device 2 and the tested seal box and an exhaust valve, and closing the rest valves; the air source 1 is opened when the test is started, the air source 1 starts to convey nitrogen to the tested seal box, the tested seal box is filled with the nitrogen, and the nitrogen can be dewatered by the dewatering device 2 in the conveying process. When the pressure in the sealed box to be tested reaches a set value by the filled nitrogen, opening the pressure release valve for pressure relief, closing the pressure release valve to stop pressure relief when the pressure is reduced to the set value, re-filling the nitrogen, opening the pressure release valve for pressure relief after the nitrogen is filled and the pressure is increased, repeatedly performing nitrogen replacement for many times until the oxygen content in the sealed box to be tested is low enough to enable the oxygen content tester to work (the oxygen content tester is used as a precise instrument to meet the requirement or condition required before the oxygen content tester is installed to work), closing the valves and the exhaust valve between the air source 1 and the water removal device 2, then opening all the valves between the sealed box to be tested and the circulating fan 3, between the circulating fan 3 and the oxygen removal component 4, between the oxygen removal component 4 and the water removal device 2, starting the circulating fan 3, pumping the gas in the sealed box to be tested out, conveying the gas into the oxygen removal component 4, conveying the gas into a dewatering device 2 for dewatering after being deoxygenated, re-entering the gas after being deoxygenated and dewatered into a tested sealed box, circulating the gas until the oxygen content in the tested sealed box is lower than 114ppm, closing a circulating fan 2, closing a valve between the circulating fan 2 and a deoxygenation assembly 4, a valve between the deoxygenation assembly 4 and the dewatering device 2, and all valves between the dewatering device 2 and the tested sealed box, opening a valve between a vacuum pump 5 and the circulating fan, starting the vacuum pump 5, pumping the gas in the tested sealed box until the pressure detected by a pressure detector 7 is lower than-1050 Pa to-950 Pa, then closing all valves, recording the reading on an oxygen content tester 6 as an initial reading, standing the gas for 2-4 hours, recording the reading on the oxygen content tester 6 as an end reading again, and calculating the hour leakage rate through the difference between the end reading and the initial reading, if the hourly leakage rate is lower than the leakage rate specified by EJ/T1096-1999, the class 1 sealed box chamber, the sealing performance of the tested sealed box is qualified, otherwise, the sealing performance of the tested sealed box is not qualified.
Claims (5)
1. The measuring system for measuring the sealing performance of the sealing box by the oxygen-containing method is characterized in that: it includes air supply (1), water trap (2), circulating fan (3), deoxidization subassembly (4), vacuum pump (5) and oxygen content tester (6), air supply (1) is connected with water trap (2), water trap (2) are connected with by survey seal box and deoxidization subassembly (4) respectively, are measured the seal box and are connected with circulating fan (3) and oxygen content tester (6) respectively, circulating fan (3) are connected with deoxidization subassembly (4) and vacuum pump (5) respectively.
2. The system for measuring the sealing performance of the seal box by the oxygen method according to claim 1, wherein: the gas source (1) uses an inert gas.
3. The system for measuring the sealing performance of the seal box by the oxygen method according to claim 1, wherein: the oxygen scavenging assembly (4) comprises more than two oxygen scavenging devices.
4. The system for measuring the sealing performance of the seal box by the oxygen method according to claim 1, wherein: the device is characterized by further comprising a pressure detector (7) and a water content detector (8), wherein the pressure detector (7) and the water content detector (8) are connected with the detected seal box.
5. The system for measuring the sealing performance of the seal box by the oxygen method according to claim 1, wherein: the vacuum pump is characterized by further comprising a plurality of pressure release valves (9), the vacuum pump (5) is connected with the pressure release valves (9), and the tested sealing box is connected with the pressure release valves (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921182427.2U CN210037114U (en) | 2019-07-25 | 2019-07-25 | Measuring system for measuring sealing performance of sealing box by oxygen-containing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921182427.2U CN210037114U (en) | 2019-07-25 | 2019-07-25 | Measuring system for measuring sealing performance of sealing box by oxygen-containing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210037114U true CN210037114U (en) | 2020-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921182427.2U Active CN210037114U (en) | 2019-07-25 | 2019-07-25 | Measuring system for measuring sealing performance of sealing box by oxygen-containing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210037114U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023201892A1 (en) * | 2022-04-21 | 2023-10-26 | 苏州西热节能环保技术有限公司 | System and method for monitoring air leakage of negative pressure system by means of hydrophobic pipeline |
-
2019
- 2019-07-25 CN CN201921182427.2U patent/CN210037114U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023201892A1 (en) * | 2022-04-21 | 2023-10-26 | 苏州西热节能环保技术有限公司 | System and method for monitoring air leakage of negative pressure system by means of hydrophobic pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CP03 | "change of name, title or address" |
Address after: No.288, Qinghua East Road, Qingbaijiang District, Chengdu, Sichuan 610000 Patentee after: Chengdu Ruiqi Zhizao Technology Co.,Ltd. Address before: No.288, Qinghua East Road, Qingbaijiang District, Chengdu, Sichuan 610000 Patentee before: CHENGDU RICH PETROCHEMICAL ENGINEERING Co.,Ltd. |
|
| CP03 | "change of name, title or address" |