CN220104635U - Pretreatment device for ethylene oxide moisture detection - Google Patents
Pretreatment device for ethylene oxide moisture detection Download PDFInfo
- Publication number
- CN220104635U CN220104635U CN202321629104.XU CN202321629104U CN220104635U CN 220104635 U CN220104635 U CN 220104635U CN 202321629104 U CN202321629104 U CN 202321629104U CN 220104635 U CN220104635 U CN 220104635U
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- China
- Prior art keywords
- ethylene oxide
- way valve
- interface
- pretreatment device
- tube
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- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 238000001514 detection method Methods 0.000 title claims abstract description 37
- 238000010926 purge Methods 0.000 claims abstract description 18
- 238000005070 sampling Methods 0.000 claims abstract description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 11
- 238000004140 cleaning Methods 0.000 claims description 11
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 238000002347 injection Methods 0.000 abstract description 8
- 239000007924 injection Substances 0.000 abstract description 8
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000036541 health Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- HIXDQWDOVZUNNA-UHFFFAOYSA-N 2-(3,4-dimethoxyphenyl)-5-hydroxy-7-methoxychromen-4-one Chemical compound C=1C(OC)=CC(O)=C(C(C=2)=O)C=1OC=2C1=CC=C(OC)C(OC)=C1 HIXDQWDOVZUNNA-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000004292 cyclic ethers Chemical class 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000003958 fumigation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002391 heterocyclic compounds Chemical class 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000000963 oxybis(methylene) group Chemical group [H]C([H])(*)OC([H])([H])* 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a pretreatment device for detecting ethylene oxide moisture, which comprises: a six-way valve; the second end of the sampling tube is connected with a first interface of the six-way valve; the two ends of the quantitative ring are respectively connected with a second interface and a fifth interface of the six-way valve through pipelines; a surface refrigerator mounted on the dosing ring; the first end of the purging pipe is connected with a third interface of the six-way valve; the second end of the purging pipe is connected with an air source; the first end of the detection tube is connected with a fourth interface of the six-way valve, and the second end of the detection tube is connected with the moisture tester; and the emptying pipe is connected with a sixth interface of the six-way valve, so that the precise metering of the ethylene oxide sample injection is realized, and the accuracy of test data is improved.
Description
Technical Field
The utility model belongs to the technical field of ethylene oxide detection, and particularly relates to a pretreatment device for ethylene oxide moisture detection.
Background
In carrying out the utility model, the inventors have found that the prior art has at least the following problems:
ethylene Oxide (EO) is one of the simplest cyclic ethers, belonging to the class of heterocyclic compounds, of the formula C2H4O, with a boiling point of 10.7 ℃. The ethylene oxide is colorless transparent liquid at low temperature, colorless gas with ether pungent smell at normal temperature, the vapor pressure of the gas is high and can reach 141kPa at 30 ℃, and the high vapor pressure determines that the ethylene oxide has stronger penetrability during fumigation and disinfection, is a toxic cancerogenic substance, and is inflammable and explosive. In the prior art, the Karl Fischer method is adopted for detecting the moisture of the ethylene oxide, and because the boiling point of the ethylene oxide is low, when a detector samples and samples at room temperature, the volatilization of the ethylene oxide is inevitably caused, the quality deviation of feeding is caused, and the detection data is inaccurate; in addition, ethylene oxide is a toxic and carcinogenic substance, and volatilization of ethylene oxide can cause injury to the health of detection personnel.
The prior art is that ethylene oxide in a steel cylinder to be detected is directly injected into a moisture tester through a conversion head, and the ethylene oxide volatilizes in a large amount at normal temperature in the injection process, so that the injection quality is inaccurate; in addition, ethylene oxide is volatilized in a large amount and diffused in the air, so that the smell is large, and the health of the detection personnel is poor.
CN 202433357U-ethylene oxide sterilization indicator comprehensive resistance detector discloses an ethylene oxide sterilization indicator comprehensive resistance detector, and comprises an exposure chamber, wherein an indicator placing rack, a temperature sensor, a pressure sensor, a humidity sensor and a concentration sensor are respectively arranged in the exposure chamber, a heating device is arranged on the outer side of the exposure chamber, and the exposure chamber is respectively connected with a vacuumizing device, a humidifying device, a dosing device and a return air device through pipelines. The above technical problems cannot be solved.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a pretreatment device for detecting the moisture of ethylene oxide, which realizes the accurate metering of the ethylene oxide sample injection and improves the accuracy of test data.
In order to solve the technical problems, the utility model adopts the following technical scheme: a pretreatment device for ethylene oxide moisture detection, comprising:
a six-way valve;
the second end of the sampling tube is connected with the first interface of the six-way valve;
the two ends of the quantitative ring are respectively connected with a second interface and a fifth interface of the six-way valve through pipelines;
a surface refrigerator mounted on the dosing ring;
the first end of the purging pipe is connected with the third interface of the six-way valve; the second end of the purging pipe is connected with an air source;
the first end of the detection tube is connected with the fourth interface of the six-way valve, and the second end of the detection tube is connected with the moisture tester;
and the emptying pipe is connected with a sixth interface of the six-way valve.
The purging pipe is also connected with a cleaning pipe in parallel.
And the purging pipe is provided with a nitrogen rotameter and a first ball valve.
The first end of the sample inlet pipe is provided with a quick connector male head.
The cleaning pipe is also provided with a quick adapter female connector.
And a second ball valve is also arranged on the cleaning pipe.
One of the technical proposal has the advantages of realizing the accurate metering of the ethylene oxide sample injection and improving the accuracy of test data; the ethylene oxide can not volatilize and leak in the detection process, so that the physical health of test detection personnel is ensured.
Drawings
FIG. 1 is a schematic diagram of a pretreatment device for ethylene oxide moisture detection according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of the pretreatment device for ethylene oxide moisture detection of FIG. 1;
the labels in the above figures are: 1. six-way valve, 2, surface refrigerator, 3, quantitative ring, 4, first ball valve, 5, moisture tester, 6, nitrogen gas rotameter, 7, quick adapter male, 8, quick adapter female, 10, second ball valve.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 to 2, a pretreatment device for ethylene oxide moisture detection comprises:
the six-way valve 1 changes the working state by changing the connection state of the six-way valve 1.
The second end of the sampling tube is connected with a first interface of the six-way valve 1; the ethylene oxide feedstock enters the system through a sample injection tube.
The two ends of the quantitative ring 3 are respectively connected with a second interface and a fifth interface of the six-way valve 1 through pipelines; the dosing ring 3 is capable of containing ethylene oxide. A surface refrigerator 2 mounted on the dosing ring 3; the surface refrigerator 2 can cool the ethylene oxide in the quantitative ring 3, and the temperature is set between-5 ℃ and 5 ℃.
The first end of the purging pipe is connected with a third interface of the six-way valve 1; the second end of the purging pipe is connected with an air source; the purge tube can blow ethylene oxide in the dosing ring 3 into the moisture meter 5 for detection.
The first end of the detection tube is connected with the fourth interface of the six-way valve 1, and the second end of the detection tube is connected with the moisture meter 5; the detection tube blows ethylene oxide in the pipeline into the moisture meter 5 for detection.
An emptying pipe is connected with a sixth port of the six-way valve 1. After the detection is completed, the emptying pipe can blow out and empty the ethylene oxide in the pipeline.
The purging pipe is also connected with a cleaning pipe in parallel, after detection is completed, the cleaning pipe can be connected into a pipeline, redundant ethylene oxide in the pipeline is blown out to the emptying pipe, and the residual ethylene oxide is discharged through the emptying pipe.
The nitrogen rotameter 6 and the first ball valve 4 are arranged on the purging pipe, so that the flow of nitrogen on the purging pipe can be controlled.
Be equipped with the public head 7 of quick-operation joint on the first end of advance the sampling tube, the public head 7 of quick-operation joint can be connected with ethylene oxide sampling steel bottle.
The cleaning pipe is also provided with a quick connector female connector 8, the quick connector female connector 8 can be connected with a quick connector male connector 7 on the sample feeding pipe, redundant ethylene oxide in the pipeline is blown out to the emptying pipe, and the residual ethylene oxide is discharged through the emptying pipe.
The cleaning pipe is also provided with a second ball valve 10 which can control the on-off of the cleaning pipe.
The test operation steps are as follows:
1. firstly, the six-way valve 1 is adjusted to a sampling state, the ethylene oxide steel bottle 9 is connected with the quick connector 7, the surface refrigerator 2 is started to cool the quantitative ring 3, the temperature is set to be between-5 ℃ and 5 ℃, and the moisture meter 5 is started and calibrated for standby;
2. opening a valve of the steel cylinder, starting to feed ethylene oxide, and adjusting the six-way valve to a detection state after the ethylene oxide liquid is discharged; opening a ball valve 4, controlling the flow of nitrogen, slowly blowing ethylene oxide in a quantitative ring 3 into a moisture meter 5, and carrying out moisture detection according to the mass of the ethylene oxide input into the quantitative ring;
3. after the detection is finished, connecting the quick connector female head 8 with the quick connector 7, opening the ball valve 10, and purging the sample injection pipeline of the ethylene oxide; the relevant ball valve and instrument are closed after purging, and test data are recorded.
After the structure is adopted, the precise metering of the ethylene oxide sample injection is realized, and the test data precision is improved; the ethylene oxide can not volatilize and leak in the detection process, so that the physical health of test detection personnel is ensured.
In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A pretreatment device for ethylene oxide moisture detection is characterized by comprising:
a six-way valve;
the second end of the sampling tube is connected with the first interface of the six-way valve;
the two ends of the quantitative ring are respectively connected with a second interface and a fifth interface of the six-way valve through pipelines;
a surface refrigerator mounted on the dosing ring;
the first end of the purging pipe is connected with the third interface of the six-way valve; the second end of the purging pipe is connected with an air source;
the first end of the detection tube is connected with the fourth interface of the six-way valve, and the second end of the detection tube is connected with the moisture tester;
and the emptying pipe is connected with a sixth interface of the six-way valve.
2. The pretreatment device for ethylene oxide moisture detection as recited in claim 1, wherein said purge tube is further connected in parallel with a cleaning tube.
3. The pretreatment device for ethylene oxide moisture detection as recited in claim 2, wherein the purge tube is provided with a nitrogen rotameter and a first ball valve.
4. A pretreatment device for ethylene oxide moisture detection as in claim 3 wherein said feed tube has a male quick connector at a first end thereof.
5. The pretreatment device for ethylene oxide moisture detection as recited in claim 4, wherein said cleaning tube is further provided with a quick-connect female connector.
6. The pretreatment device for ethylene oxide moisture detection as recited in claim 5, wherein a second ball valve is further provided on said cleaning tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321629104.XU CN220104635U (en) | 2023-06-26 | 2023-06-26 | Pretreatment device for ethylene oxide moisture detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321629104.XU CN220104635U (en) | 2023-06-26 | 2023-06-26 | Pretreatment device for ethylene oxide moisture detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220104635U true CN220104635U (en) | 2023-11-28 |
Family
ID=88866974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321629104.XU Active CN220104635U (en) | 2023-06-26 | 2023-06-26 | Pretreatment device for ethylene oxide moisture detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220104635U (en) |
-
2023
- 2023-06-26 CN CN202321629104.XU patent/CN220104635U/en active Active
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