CN202452118U - Gas-carrying uninterrupted switching device - Google Patents
Gas-carrying uninterrupted switching device Download PDFInfo
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- CN202452118U CN202452118U CN2012200605053U CN201220060505U CN202452118U CN 202452118 U CN202452118 U CN 202452118U CN 2012200605053 U CN2012200605053 U CN 2012200605053U CN 201220060505 U CN201220060505 U CN 201220060505U CN 202452118 U CN202452118 U CN 202452118U
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- gas
- way valve
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- carrying
- switching device
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Abstract
The utility model discloses a gas-carrying uninterrupted switching device, which comprises a gas transmission pipeline and a gas outlet, wherein the gas outlet is connected with a gas use instrument, two ends of the gas transmission pipeline are respectively communicated with one of gas outlets of a three-way valve A and a three-way valve B, gas inlets of the three-way valve A and the three-way valve B are respectively connected with a gas inlet pipe, the two gas inlet pipes are respectively connected with a gas source A and a gas source B, the gas source A and the gas source B are selectively used, namely, when the gas source A is not enough in pressure and is required to be replaced, a switch of the gas source B is opened, outlet pressure of a reducing valve is adjusted to be consistent with that of the gas source A; and the other gas outlet of the three-way valve A and the three-way valve B is a gas replacement port. By the gas-carrying uninterrupted switching device, the problems of requiring power off and easily introducing air during gas replacement when the gas sources of an analytical instrument do not have gas are solved, the switching of the gas sources can be completed by three simple operation, and the gas-carrying uninterrupted switching device is much convenient, is simple to manufacture and is low in cost. The gas-carrying uninterrupted switching device has the advantages that the device is simple and practical, switching is convenient, the gas use instrument is not required to be operated during switching gas and the like.
Description
Technical field
The utility model relates to a kind of uninterrupted COMM communication that is used for carrier gas, combustion gas, protection gas, is specifically related to the uninterrupted COMM communication of a kind of carrier gas.
Background technique
All kinds of cyclinder gas use in the laboratory in modern times are very general, and purity requirement is higher, generally is more than 99.99%, all kinds of carrier gas required like chromatograph work, protection gas that atomic absorption photometer uses and combustion gas etc.Usually before one bottle of carrier gas runs low, need close and use the gas instrument, change gas cylinder then, fully open instrument again behind the substitution gas pipeline.Do not measure entrained air or other foreign gas like careless displacement, light then cause the fluctuation of instrument baseline, influence the mensuration of sample, heavy then also possibly cause the damage of instrument.
Summary of the invention
The utility model is to the problem and shortage that existing technology exists, and provides a kind of and just can accomplish the switching of source of the gas through simple three step operating operations, and is very convenient, and makes the uninterrupted COMM communication of simple carrier gas with low cost.
Technological scheme: the uninterrupted COMM communication of a kind of carrier gas, comprise air delivering pipeline with the air outlet that is connected with the gas instrument, the two ends of this pneumatic tube are communicated with one of air outlet of three-way valve A and three-way valve B respectively; Be connected with suction tude on the suction port of three-way valve A and three-way valve B respectively, two suction tude are connected with source of the gas B with air source A respectively, and air source A and source of the gas B select to use; Promptly when the air source A underpressure; When needing to change, open the switch of source of the gas B, it is consistent with air source A to regulate the reduction valve outlet pressure.The another one air outlet of three-way valve A and three-way valve B (promptly the 3rd mouthful) is interconnected as the displacement gas port.
Be respectively arranged with reduction valve on two suction tude.
Beneficial effect: the uninterrupted COMM communication of the utility model carrier gas, when using the two gas cylinder series design of two gas three-way valve bands to solve the analytical instrument source of the gas not have gas, change the difficult problem that source of the gas need shut down and introduce air easily.Just can accomplish the switching of source of the gas through simple three step operating operations, very convenient, and make simply with low cost.
The utility model product is as analyzing the uninterrupted COMM communication of industry assay apparatus with carrier gas, combustion gas, protection gas, has simple and practically, and easy switching, switching gas need not advantage such as operate with the gas instrument.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
Embodiment one: referring to Fig. 1.
The proper functioning process of gas path:
Gas gets into gas three-way valve A (label 2) through suction tude 5 in the air source A (label 7), divides two-way behind the entering threeway A, wherein one the tunnel arrives gas three-way valve B, and the B valve is in closed condition.Another route gas outlet arrives uses the gas instrument.
Change source of the gas steel cylinder flow process:
When the air source A underpressure, when needing to change, open the switch of source of the gas B, it is consistent with air source A to regulate the reduction valve outlet pressure.B turns round to exhaust position with the gas three-way valve, and the gas displacement gas circuit among this moment source of the gas B also effluxes.After treating gas circuit displacement thoroughly behind the 1-2 score value, gas three-way valve B is turned round to connecing the threeway position, simultaneously gas three-way valve A is turned round to closed condition.So far accomplish whole gas handoff procedure.
Claims (2)
1. uninterrupted COMM communication of carrier gas, comprise air delivering pipeline with the air outlet that is connected with the gas instrument, it is characterized in that: the two ends of this pneumatic tube are communicated with one of air outlet of three-way valve A and three-way valve B respectively; Be connected with suction tude on the suction port of three-way valve A and three-way valve B respectively, two suction tude are connected with source of the gas B with air source A respectively, and air source A and source of the gas B select to use; Promptly when the air source A underpressure; When needing to change, open the switch of source of the gas B, it is consistent with air source A to regulate the reduction valve outlet pressure; The another one air outlet of three-way valve A and three-way valve B is interconnected as the displacement gas port.
2. the uninterrupted COMM communication of carrier gas according to claim 1 is characterized in that: be respectively arranged with reduction valve on two suction tude.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200605053U CN202452118U (en) | 2012-02-23 | 2012-02-23 | Gas-carrying uninterrupted switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200605053U CN202452118U (en) | 2012-02-23 | 2012-02-23 | Gas-carrying uninterrupted switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202452118U true CN202452118U (en) | 2012-09-26 |
Family
ID=46867982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200605053U Expired - Fee Related CN202452118U (en) | 2012-02-23 | 2012-02-23 | Gas-carrying uninterrupted switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202452118U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398291A (en) * | 2013-07-19 | 2013-11-20 | 中国电力工程顾问集团西北电力设计院 | Compressed air system of thermal power plant and classified pressure supply method for compressed air system |
| CN109521129A (en) * | 2018-12-10 | 2019-03-26 | 黔西县黔希煤化工投资有限责任公司 | A kind of gas-chromatography carrier gas switching application method |
| CN110814487A (en) * | 2019-12-11 | 2020-02-21 | 烟台万华电子材料有限公司 | Welding gas circuit protection system and gas protection welding method |
| CN114248047A (en) * | 2021-12-03 | 2022-03-29 | 渤海造船厂集团有限公司 | Flexible continuous clean welding back gas protection device |
-
2012
- 2012-02-23 CN CN2012200605053U patent/CN202452118U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398291A (en) * | 2013-07-19 | 2013-11-20 | 中国电力工程顾问集团西北电力设计院 | Compressed air system of thermal power plant and classified pressure supply method for compressed air system |
| CN109521129A (en) * | 2018-12-10 | 2019-03-26 | 黔西县黔希煤化工投资有限责任公司 | A kind of gas-chromatography carrier gas switching application method |
| CN110814487A (en) * | 2019-12-11 | 2020-02-21 | 烟台万华电子材料有限公司 | Welding gas circuit protection system and gas protection welding method |
| CN114248047A (en) * | 2021-12-03 | 2022-03-29 | 渤海造船厂集团有限公司 | Flexible continuous clean welding back gas protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20150223 |
|
| EXPY | Termination of patent right or utility model |