CN219798901U - Full-automatic ethylene oxide gas sampling device - Google Patents
Full-automatic ethylene oxide gas sampling device Download PDFInfo
- Publication number
- CN219798901U CN219798901U CN202321157040.8U CN202321157040U CN219798901U CN 219798901 U CN219798901 U CN 219798901U CN 202321157040 U CN202321157040 U CN 202321157040U CN 219798901 U CN219798901 U CN 219798901U
- Authority
- CN
- China
- Prior art keywords
- sampling
- sampling bottle
- ethylene oxide
- tube
- bottle
- 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.)
- Active
Links
- 238000005070 sampling Methods 0.000 title claims abstract description 177
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 238000003860 storage Methods 0.000 claims abstract description 22
- 229920000642 polymer Polymers 0.000 claims abstract description 19
- 238000004140 cleaning Methods 0.000 claims abstract description 13
- 238000005086 pumping Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 4
- 238000006116 polymerization reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to a full-automatic ethylene oxide gas sampling device which comprises an ethylene oxide storage tank, a sampling tube, a driving assembly fixedly arranged at the outer end of the sampling tube, a polymer cleaning assembly arranged on the driving assembly, a sampling bottle arranged on the top wall of the sampling tube and a vacuumizing assembly connected with the sampling bottle; the scraper and the sealing ring are tightly attached to the inner wall of the sampling tube, so that air leakage is prevented, the sealing ring and the scraper move towards the inner cavity to scrape and push the polymer into the ethylene oxide storage tank, the sampling port is prevented from being blocked, the sampling bottle, the front pipeline of the sampling bottle and the rear pipeline of the sampling bottle are in a vacuum state by the vacuum pump, sampling gas is prevented from remaining in the sampling pipeline, and a required gas sample can be accurately taken out.
Description
Technical Field
The utility model relates to a full-automatic ethylene oxide gas sampling device, and belongs to the technical field of chemical industry, medicine or environmental protection.
Background
Ethylene oxide gas belongs to inflammable, explosive and polymeric chemical substances and is a highly hazardous medium. The polymerization is rapid when the temperature is higher than 40 ℃, the polymerization is relatively slow when the temperature is lower than 40 ℃, the polymerization is usually stored in a liquid phase at about-10 ℃, and nitrogen is filled in a storage tank to prevent the ethylene oxide from being exploded when contacting with air.
Sampling is an important operation before material analysis and assay in the industrial production process, and currently, in the fields of chemical industry, medicine, environmental protection and the like, the gas phase space in an ethylene oxide storage tank needs to be sampled to analyze the impurity percentage in the gas phase space. The manual sampling procedure is complicated, and because the ethylene oxide is inflammable and explosive and has the characteristic of high hazard, the human body is easily damaged or explodes in the manual sampling process.
Because ethylene oxide is easy to polymerize, the sampling port of equipment is easy to block, the detention rate in the automatic sampler is higher, the mixing of components among different sampling batches is easy to cause, and the real condition of gas is difficult to reflect.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a full-automatic ethylene oxide gas sampling device which adopts automatic control, can accurately take out a required gas sample, has no blockage and reduces gas residues.
The utility model adopts the following technical scheme:
the utility model comprises an ethylene oxide storage tank, a sampling tube which is arranged on the outer wall of the ethylene oxide storage tank and is communicated with the inner cavity of the ethylene oxide storage tank, a driving component which is fixedly arranged at the outer end of the sampling tube, a polymer cleaning component which is arranged on the driving component, a sampling bottle which is arranged on the top wall of the sampling tube and a vacuumizing component which is connected with the sampling bottle; the polymer cleaning component is arranged in the sampling tube, and the driving component drives the polymer cleaning component to move left and right.
The polymer cleaning assembly comprises a pull rod fixedly arranged at the driving end of the driving assembly, a scraper fixedly arranged at the end part of the pull rod and a sealing ring arranged on the pull rod; the sealing ring is arranged between the scraper and the driving end of the driving assembly, and the scraper and the sealing ring are tightly attached to the inner wall of the sampling tube.
The vacuum pumping assembly comprises a transfer tube, a sampling bottle front pipeline, a sampling bottle rear pipeline, a vacuum pump, an air flow control assembly A and an air flow control assembly B, wherein the transfer tube is arranged on the outer wall of a sampling tube and is communicated with the inner cavity of the sampling tube, the sampling bottle front pipeline is arranged between an outlet of the transfer tube and an air inlet of the sampling bottle, the sampling bottle rear pipeline is arranged on an outlet of the sampling bottle, the vacuum pump is arranged at the end part of the sampling bottle rear pipeline, the air flow control assembly A is arranged on the sampling bottle front pipeline, and the air flow control assembly B is arranged on the sampling bottle rear pipeline.
The airflow control assembly A comprises a sampling automatic control cut-off valve, a sampling bottle front automatic control valve and a sampling bottle front manual valve which are arranged on a sampling bottle front pipeline; the sampling self-control cut-off valve, the sampling bottle front self-control valve and the sampling bottle front manual valve are sequentially arranged between the switching tube and the sampling bottle.
The airflow control assembly B comprises a sampling bottle rear manual valve and a sampling bottle rear automatic valve which are arranged on a sampling bottle rear pipeline; the manual valve behind the sampling bottle and the automatic control valve behind the sampling bottle are sequentially arranged between the sampling bottle and the vacuum pump.
The driving component is a hydraulic cylinder.
The scraper is disc-shaped.
The utility model has the following positive effects: because the scraper and the sealing ring are tightly attached to the inner wall of the sampling tube, and before sampling, the pull rod on the piston rod of the hydraulic cylinder drives the sealing ring and the scraper to move towards the inner cavity of the ethylene oxide storage tank, the polymer is scraped from the inner wall of the sampling tube and pushed into the ethylene oxide storage tank, the sampling port is prevented from being blocked, the sampling bottle, the front pipeline of the sampling bottle and the rear pipeline of the sampling bottle are vacuumized by the vacuum pump, the sampling gas is prevented from remaining in the sampling pipeline, and the required gas sample can be accurately taken out.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic diagram of the structure of the scraper in the ethylene oxide storage tank;
fig. 3 is a schematic diagram of the internal structure of the transfer tube between the scraper and the sealing ring.
In the drawings: 1. scraper, 2, sealing ring, 3, pull rod, 4, transfer tube, 5, sampling tube, 6, hydraulic cylinder, 7, vacuum pump, 8, sampling bottle back pipe, 9, sampling bottle back automatic control valve, 10, sampling bottle, 11, sampling bottle front automatic control valve, 12, sampling bottle front pipe, 13, sampling automatic control cut-off valve, 14, ethylene oxide storage tank, 15, sampling bottle back manual valve, 16, sampling bottle front manual valve.
Detailed Description
As shown in fig. 1, the utility model comprises an ethylene oxide storage tank 14, a sampling tube 5 which is arranged on the outer wall of the ethylene oxide storage tank 14 and is communicated with the inner cavity of the ethylene oxide storage tank, a driving component fixedly arranged at the outer end of the sampling tube 5, a polymer cleaning component arranged on the driving component, a sampling bottle 10 arranged on the top wall of the sampling tube 5 and a vacuumizing component connected with the sampling bottle 10; the polymer cleaning component is arranged in the sampling tube 5, and the driving component drives the polymer cleaning component to move left and right. The driving assembly and the vacuumizing assembly are controlled by a PLC system.
As shown in fig. 1-3, the polymer cleaning assembly of the utility model comprises a pull rod 3 fixedly arranged on the driving end of the driving assembly, a scraper 1 fixedly arranged at the end part of the pull rod 3 and a sealing ring 2 arranged on the pull rod 3; the sealing ring 2 is arranged between the scraper 1 and the driving end of the driving component, and the scraper 1 and the sealing ring 2 are tightly attached to the inner wall of the sampling tube 5; the driving component is a hydraulic cylinder 6, and the pull rod 3 is arranged at the piston rod end of the hydraulic cylinder 6; the doctor blade 1 has a disk shape.
As shown in fig. 1-3, the vacuumizing assembly of the utility model comprises a transfer pipe 4 fixedly installed on the wall of a sampling tube 5 and communicated with the inner cavity of the sampling tube 5, a sampling bottle front pipeline 12 installed between the outlet of the transfer pipe 4 and the air inlet of the sampling bottle 10, a sampling bottle rear pipeline 8 installed on the outlet of the sampling bottle 10, a vacuum pump 7 installed on the end part of the sampling bottle rear pipeline 8, an airflow control assembly A installed on the sampling bottle front pipeline 12 and an airflow control assembly B installed on the sampling bottle rear pipeline 8.
As shown in fig. 1-3, the air flow control assembly a of the present utility model comprises a sampling self-control shut-off valve 13, a sampling bottle front self-control valve 11 and a sampling bottle front manual valve 16 which are installed on a sampling bottle front pipeline 12; the sampling automatic control cut-off valve 13 is adjacent to the switching tube 4; the sampling bottle front automatic control valve 11 is adjacent to the sampling bottle 10, namely the sampling automatic control cut-off valve 13, the sampling bottle front automatic control valve 11 and the sampling bottle front manual valve 16 are sequentially arranged between the switching pipe 4 and the sampling bottle 10; the air flow control assembly B comprises a sampling bottle rear automatic control valve 9 and a sampling bottle rear manual valve 15 which are arranged on a sampling bottle rear pipeline 8, namely the sampling bottle rear manual valve 15 and the sampling bottle rear automatic control valve 9 are sequentially arranged between the sampling bottle 10 and the vacuum pump 7.
The hydraulic cylinder 6, the vacuum pump 7, the sampling bottle rear automatic control valve 9, the sampling bottle front automatic control valve 11 and the sampling automatic control cut-off valve 13 are controlled to be opened and closed by signals sent by a PLC system.
The process of sampling ethylene oxide gas in the ethylene oxide storage tank 14 by the utility model is as follows:
before sampling, as shown in fig. 1, the scraper 1 and the sealing ring 2 are positioned between the air inlet of the sampling tube 5 and the air inlet of the switching tube 4, and the front manual valve 16 and the rear manual valve 15 of the sampling bottle are in an open state; due to the polymerization of the ethylene oxide gas, if not sampled for a long time, a certain amount of polymer is present in the space between the doctor blade 1 and the ethylene oxide tank 14, which part of the polymer needs to be cleaned before sampling.
When the PLC system sends out a sampling instruction, the hydraulic cylinder 6 is started, a piston rod of the hydraulic cylinder 6 stretches out to push the pull rod 3, the pull rod 3 drives the sealing ring 2 and the scraper 1 to move leftwards, and as the scraper 1 is tightly attached to the inner wall of the sampling tube 5, in the moving process of the scraper 1, a polymer can be scraped off from the inner wall of the sampling tube 5 and pushed into the ethylene oxide storage tank 14, and when the scraper 1 continues to move leftwards to the inner cavity of the ethylene oxide storage tank 14 as shown in the figure 2, the PLC system sends out an instruction to enable the hydraulic cylinder 6 to be closed, and the pull rod 3 stops moving.
Next, the PLC system issues an opening instruction, opens the vacuum pump 7, opens the sampling bottle rear automatic control valve 9, the sampling bottle front automatic control valve 11 and the sampling automatic control shut-off valve 13, and the vacuum pump 7 pumps vacuum to make the sampling bottle 10, the sampling bottle front pipe 12 and the sampling bottle rear pipe 8 in a vacuum state, and then the PLC issues an instruction, and closes the vacuum pump 7 and the sampling bottle rear automatic control valve 9. Then, a PLC system sends out an instruction to control the hydraulic cylinder 6 to be started, a piston rod of the hydraulic cylinder 6 is retracted to drive the pull rod 3 to move rightwards so that the sealing ring 2 and the scraper 1 move into the sampling tube 5, an air inlet of the switching tube 4 is positioned between the sealing ring 2 and the scraper 1 as shown in the figure 3, and because the sampling bottle 10 and a pipeline 12 in front of the sampling bottle are in a vacuum state, air between the scraper 1 and the sealing ring 2 can enter the sampling bottle 10 through the switching tube 4 along the pipeline 12 in front of the sampling bottle, and finally, the PLC system controls the sampling self-control cut-off valve 13 and the self-control valve 11 in front of the sampling bottle to be closed, so that sampling is completed. The sample bottle front manual valve 16 and the sample bottle rear manual valve 15 may then be manually closed and removed with the sample bottle 10 for sample testing.
Because the scraper 1 and the sealing ring 2 are tightly attached to the inner wall of the sampling tube 5, the pull rod 3 on the piston rod of the hydraulic cylinder 6 drives the sealing ring 2 and the scraper 1 to move towards the inner cavity of the ethylene oxide storage tank 14 before sampling, the polymer is scraped from the inner wall of the sampling tube 5 and pushed into the ethylene oxide storage tank 14, the sampling port is prevented from being blocked, the vacuum pump 7 vacuumizes to enable the sampling bottle 10, the sampling bottle front pipeline 12 and the sampling bottle rear pipeline 8 to be in a vacuum state, and the sampling gas is prevented from remaining in the sampling pipeline.
The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (7)
1. The full-automatic ethylene oxide gas sampling device is characterized by comprising an ethylene oxide storage tank (14), a sampling tube (5) which is arranged on the outer wall of the ethylene oxide storage tank (14) and is communicated with the inner cavity of the ethylene oxide storage tank, a driving component fixedly arranged at the outer end of the sampling tube (5), a polymer cleaning component arranged on the driving component, a sampling bottle (10) arranged on the top wall of the sampling tube (5) and a vacuumizing component connected with the sampling bottle (10);
the polymer cleaning component is arranged in the sampling tube (5), and the driving component drives the polymer cleaning component to move left and right.
2. The full-automatic ethylene oxide gas sampling device according to claim 1, wherein the polymer cleaning assembly comprises a pull rod (3) fixedly installed on a driving end of the driving assembly, a scraper (1) fixedly installed on the end part of the pull rod (3) and a sealing ring (2) installed on the pull rod (3);
the sealing ring (2) is arranged between the scraper (1) and the driving end of the driving assembly, and the scraper (1) and the sealing ring (2) are tightly attached to the inner wall of the sampling tube (5).
3. A fully automatic ethylene oxide gas sampling apparatus according to claim 2, characterized in that the vacuum pumping assembly comprises a transfer tube (4) mounted on the outer wall of the sampling tube (5) and communicated with the inner cavity of the sampling tube (5), a sampling bottle front pipeline (12) mounted between the outlet of the transfer tube (4) and the gas inlet of the sampling bottle (10), a sampling bottle rear pipeline (8) mounted on the outlet of the sampling bottle (10), a vacuum pump (7) mounted on the end part of the sampling bottle rear pipeline (8), a gas flow control assembly a mounted on the sampling bottle front pipeline (12) and a gas flow control assembly B mounted on the sampling bottle rear pipeline (8).
4. A fully automatic ethylene oxide gas sampling apparatus according to claim 3, characterized in that the gas flow control assembly a comprises a sampling self-control shut-off valve (13), a sampling bottle front self-control valve (11) and a sampling bottle front manual valve (16) mounted on a sampling bottle front pipe (12);
the sampling automatic control cut-off valve (13), the sampling bottle front automatic control valve (11) and the sampling bottle front manual valve (16) are sequentially arranged between the transfer tube (4) and the sampling bottle (10).
5. A fully automatic ethylene oxide gas sampling apparatus according to claim 3, characterized in that the gas flow control assembly B comprises a post-sampling manual valve (15) and a post-sampling automatic valve (9) mounted on a post-sampling pipe (8);
the manual valve (15) behind the sampling bottle and the automatic control valve (9) behind the sampling bottle are sequentially arranged between the sampling bottle (10) and the vacuum pump (7).
6. A fully automatic ethylene oxide gas sampling apparatus according to claim 1, characterized in that the drive assembly is a hydraulic cylinder (6).
7. A fully automatic ethylene oxide gas sampling apparatus according to claim 2, characterized in that the doctor blade (1) is disc-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321157040.8U CN219798901U (en) | 2023-05-15 | 2023-05-15 | Full-automatic ethylene oxide gas sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321157040.8U CN219798901U (en) | 2023-05-15 | 2023-05-15 | Full-automatic ethylene oxide gas sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219798901U true CN219798901U (en) | 2023-10-03 |
Family
ID=88156413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321157040.8U Active CN219798901U (en) | 2023-05-15 | 2023-05-15 | Full-automatic ethylene oxide gas sampling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219798901U (en) |
-
2023
- 2023-05-15 CN CN202321157040.8U patent/CN219798901U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110987538A (en) | Safe automatic sampling device | |
| CN201532325U (en) | Agitated reactor liquid sampler | |
| CN219798901U (en) | Full-automatic ethylene oxide gas sampling device | |
| CN201724852U (en) | Gas bag sealing sampler | |
| CN201555740U (en) | Liquid chlorosilane on-line sampling device | |
| CN116698525A (en) | Full-automatic ethylene oxide gas sampling device and sampling method | |
| CN105258975A (en) | Closed insulation oil sampling device and sampling method thereof | |
| CN106910668B (en) | A kind of vacuum quantitative automatic sample handling system and its application method | |
| CN201242511Y (en) | Multilevel sampling apparatus for storage tank | |
| CN109946127B (en) | Shale vacuum crusher | |
| CN107063752A (en) | A kind of tube sampler and sampling method for realizing the anti-shearing sampling of isothermal with pressure | |
| CN115791411A (en) | Stainless steel ripples hose resistance to pressure check out test set | |
| CN207689171U (en) | A kind of reaction kettle sampler | |
| CN210376045U (en) | Water test device and control system thereof | |
| CN219038518U (en) | Closed quantitative sampling equipment | |
| CN111929116B (en) | Sampling method for detecting air content of insulating oil | |
| US5551312A (en) | Device for sampling and pumping liquids contained in a chemical reaction vessel, drum or storage tank | |
| CN2786600Y (en) | Seal type liquid gas sample collector | |
| CN110082484B (en) | Water-sediment degradation experiment system | |
| US20210255067A1 (en) | System and method for liquid displacement auto-sampling | |
| CN219434416U (en) | Thallium pollution emergency treatment pollution sample sampling device | |
| CN100528251C (en) | A non-oxygen dialysis apparatus | |
| CN221826532U (en) | Simple and practical vacuum airtight sampler | |
| CN221803497U (en) | Closed sampler of reaction kettle | |
| CN210774816U (en) | Self-closing sampling bottle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |