CN2083052U - Switching unit of air supply system - Google Patents
Switching unit of air supply system Download PDFInfo
- Publication number
- CN2083052U CN2083052U CN 91201679 CN91201679U CN2083052U CN 2083052 U CN2083052 U CN 2083052U CN 91201679 CN91201679 CN 91201679 CN 91201679 U CN91201679 U CN 91201679U CN 2083052 U CN2083052 U CN 2083052U
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- CN
- China
- Prior art keywords
- valve
- pressure limiting
- conduit
- pressure
- gas
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- 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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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model discloses a switching device of a gas supplying system and is mainly characterized in that the minimum permitted use pressing force on a group of gas bottle pipe lines is used as the controlling pressing force of a pressure limiting cutting off valve on the other group of gas bottle group pipe lines to cause a valve head in the pressure limiting cutting off valve to move and the purpose of automatically opening or closing the gas bottle group to supply gas is achieved. Therefore, the switching device of a gas supplying system can ensure the continuous and reliable gas supplying.
Description
This utility model relates to a kind of air supply system switching device shifter that is made of a plurality of gas cylinder groups and pressure limiting cut-off valve.
At present, gas cylinder group concentrated oxygen supply is all adopted at the Central oxygen-supply station of most of hospitals, after one group of oxygen in the gas cylinder is used up, can be transformed into another gas cylinder group immediately and continue oxygen supply, generally adopts hand stop valve to realize the switching of source of the gas at home; And abroad be that adopts pressure sensor and electromagnetic valve constitute the oxygen system switching device shifter, it experiences the just minimum permission working pressure in the gas cylinder group of air feed by pressure transducer, convert electric signal to, be input to electromagnetic valve, the valve rod of controlling in this valve moves, and makes air supply system automatically switch to another gas cylinder group and need continue air feed.More than these air supply system switching device shifters weak point is all arranged, the former adopts hand control, the special messenger sticks to post during switching, and is difficult for accurately grasping the minimum permission working pressure of gas cylinder group and guarantees continuous air feed; And the latter, it is complicated to form switched system, and is subjected to the influence of power failure suddenly, easily causes contingency, and reliability is low.
The purpose of this utility model be to avoid above-mentioned weak point of the prior art and provide a kind of both need not be manual, also control without electric power, just can control a plurality of gas cylinder groups automatically and switch, guarantee air feed continuously, accurately and reliably, novel air supply system switching device shifter simple in structure.
The purpose of this utility model can reach by following measure: general air supply system switching device shifter is made up of gas cylinder group, pressure limiting cut-off valve, conduit and check valve, the pressure limiting cut-off valve of structure identical (or different) is housed respectively on two groups of (or many groups) gas cylinder pipe-line systems of this device, with the minimum permission working pressure on one group of supply air line, controlled pressure as another group gas cylinder group pressure limiting cut-off valve, control the unlatching and closed control force of valve head in this valve, thereby realize opening or closing automatically the purpose of this gas cylinder group air feed.
Be described in further detail below in conjunction with drawings and Examples.
Fig. 1 is a schematic diagram of the present utility model
Fig. 2 is the profile of this utility model pressure limiting cut-off valve
Accompanying drawing 1 provides by two groups of gas cylinder groups (I, II) as source of the gas, outlet in each gas cylinder group, by pipeline a pressure limiting cut-off valve (A, B) and a check valve (M, N) that structure is identical is installed respectively, (E, F) connects into path with conduit, and leads to the air supply system switching device shifter of using gas department through conduit G.With reference to the accompanying drawings 2, this pressure limiting cut-off valve (A, B) is by housing (1), control ozzle (2), valve head (3), spring (4), pressure inlet (5,8), nonmetal diaphragm seal (6) and O shape ring (7,9,10,11) composition.The control ozzle (2) of pressure limiting cut-off valve (A) is connected with the pressure inlet (5) of pressure limiting cut-off valve (B) and the conduit (F) between the check valve (M) by conduit (C), and the control ozzle (2) of pressure limiting cut-off valve (B) is connected with the pressure inlet (5) of pressure limiting cut-off valve (A) and the conduit (E) between the check valve (N) by conduit (D).
The operation principle of this air supply system switching device shifter is as follows: when gas cylinder group (1) air feed and supply gas pressure are higher than minimum permission working pressure, and gas cylinder group (II) air feed not, at this moment the pressure inlet (5 on the pressure limiting cut-off valve (A), 8) form path, so the gas of gas cylinder group (1) arrives the gas department that uses through pressure limiting cut-off valve (A), conduit (E), check valve (N) and conduit (G).Owing to be subjected to the prevention of check valve (M), the gas that comes from gas cylinder group (I) does not enter in the conduit (F), therefore, be lower than by the pressure in the control ozzle (2) of the pressure limiting cut-off valve (A) that links to each other with conduit (C) and allow minimum working pressure, guarantee that pressure limiting cut-off valve (A) is in normally open.Because of being full of the gas that is higher than minimum permission working pressure in the conduit (E), enter the control ozzle (2) of pressure limiting cut-off valve (B) by conduit (D), by O shape ring (10,11) sealing, at this moment act on the interior valve head of pressure limiting cut-off valve (B) (3) d
1Power on the end face is greater than acting on d
2Power on the end face and spring (4) active force sum, valve head (3) just are moved to the left to the H end of housing (1), because valve head (3) d
2Compacting one nonmetal diaphragm seal (6) forms sealing surface with the H end of housing (1) on the end face, make the pressure inlet (5 on the pressure limiting cut-off valve (B), 8) obstructed, gas cylinder group (II) is cut off source of the gas with conduit (F) by pressure limiting cut-off valve (B), and gas cylinder group (II) just can be pulled down and change the competent new gas cylinder group of pressure.
When the pressure of gas cylinder group (1) was lower than minimum permission working pressure, the pressure that leads to the control ozzle (2) of pressure limiting cut-off valve (B) through conduit (D) also was lower than minimum permission working pressure, at this moment acts on the interior valve head of pressure limiting cut-off valve (B) (3) d
1Power on the end face is less than acting on d
2The active force sum of power on the end face and spring (4), just the move right right-hand member of housing (1) of valve head (3), therefore valve head (3) left end and housing (1) H end has the slit, make the pressure inlet (5 on the pressure limiting cut-off valve (B), 8) form path, the gas of gas cylinder group (II) arrives the gas department that uses through pressure limiting cut-off valve (B), conduit (F), check valve (M) and conduit (G).Owing to be subjected to the prevention of check valve (N), the gas of gas cylinder group (II) can not enter in the conduit (E), therefore be lower than the minimum working pressure of permission by the pressure in the control ozzle (2) of the continuous pressure limiting cut-off valve (B) of conduit (D), guarantee that pressure limiting cut-off valve (B) is in normally open.Because of being full of the gas that is higher than minimum permission working pressure in the conduit (F), enter the control ozzle (2) of pressure limiting cut-off valve (A) by conduit (C), at this moment act on the interior valve head of pressure limiting cut-off valve (A) (3) d
1Power on the end face is greater than acting on d
2Power and spring (4) active force sum on the end face, valve head (3) just are moved to the left to housing H end, make on the pressure limiting cut-off valve (A) to accept ozzle (5,8) obstructed, gas cylinder group (I) is air feed not, just can pull down and change the competent new gas cylinder group of pressure.Circulation guarantees continuous air feed so repeatedly.
This air supply system switching device shifter can be used for a plurality of gas cylinder groups, also can be used for hydraulic energy system.
This air supply system switching device shifter is owing to utilize in the gas cylinder group one group the minimum working pressure of permission as the controlled pressure of another group, reach automatic unlatching or cut off gas cylinder group air feed, therefore do not need manual control or utilize other electric primary elements and executive component control, automatically control with simple structure, guarantee continuous air feed, thereby improved reliability and accuracy.
Claims (1)
1, a kind of air supply system switching device shifter, be by two groups of gas cylinder group (I, II) as source of the gas, outlet in each gas cylinder group, by pipeline a pressure limiting cut-off valve (A that structure is identical is installed respectively, B) and check valve (M, N), with conduit (E, F) connect into path, and lead to the gas department that uses through conduit G, its pressure limiting cut-off valve (A, B) by housing (1), control ozzle (2), valve head (3), spring (4), pressure inlet (5,8), nonmetal diaphragm seal (6) and O shape ring (7,9,10,11) form, this switching device shifter is characterised in that: the control ozzle (2) of pressure limiting cut-off valve (A) is connected with the pressure inlet (5) of pressure limiting cut-off valve (B) and the conduit (F) between the check valve (M) by conduit (C), and the control ozzle (2) of pressure limiting cut-off valve (B) is connected with the pressure inlet (5) of pressure limiting cut-off valve (A) and the conduit (E) between the check valve (N) by conduit (D).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91201679 CN2083052U (en) | 1991-02-08 | 1991-02-08 | Switching unit of air supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91201679 CN2083052U (en) | 1991-02-08 | 1991-02-08 | Switching unit of air supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2083052U true CN2083052U (en) | 1991-08-21 |
Family
ID=4912396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91201679 Withdrawn CN2083052U (en) | 1991-02-08 | 1991-02-08 | Switching unit of air supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2083052U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100387313C (en) * | 2003-11-03 | 2008-05-14 | 蔡冠辉 | Pressure differential oxygen breathing enhancer |
| CN102274566A (en) * | 2010-12-31 | 2011-12-14 | 北京谊安医疗系统股份有限公司 | Anaesthesia machine and gas inlet conversion device used for same |
| CN102793960A (en) * | 2012-08-14 | 2012-11-28 | 苏州品诺维新医疗科技有限公司 | Air path device for pneumatic control passage switching and control method |
| CN104208796A (en) * | 2013-06-05 | 2014-12-17 | 北京谊安医疗系统股份有限公司 | Transmission device for roller pin unlocking and medical air supply device with same |
| CN106195412A (en) * | 2015-05-04 | 2016-12-07 | 陕西汽车集团有限责任公司 | A kind of valve member |
| CN106640815A (en) * | 2016-12-27 | 2017-05-10 | 重庆智神科技有限公司 | Pressure switching device of airtight leakage detecting system |
-
1991
- 1991-02-08 CN CN 91201679 patent/CN2083052U/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100387313C (en) * | 2003-11-03 | 2008-05-14 | 蔡冠辉 | Pressure differential oxygen breathing enhancer |
| CN102274566A (en) * | 2010-12-31 | 2011-12-14 | 北京谊安医疗系统股份有限公司 | Anaesthesia machine and gas inlet conversion device used for same |
| CN102274566B (en) * | 2010-12-31 | 2014-08-06 | 北京谊安医疗系统股份有限公司 | Anaesthesia machine and gas inlet conversion device used for same |
| CN102793960A (en) * | 2012-08-14 | 2012-11-28 | 苏州品诺维新医疗科技有限公司 | Air path device for pneumatic control passage switching and control method |
| CN104208796A (en) * | 2013-06-05 | 2014-12-17 | 北京谊安医疗系统股份有限公司 | Transmission device for roller pin unlocking and medical air supply device with same |
| CN104208796B (en) * | 2013-06-05 | 2018-07-17 | 北京谊安医疗系统股份有限公司 | For the transmission device of needle roller unlock and with its medical gas supply device |
| CN106195412A (en) * | 2015-05-04 | 2016-12-07 | 陕西汽车集团有限责任公司 | A kind of valve member |
| CN106195412B (en) * | 2015-05-04 | 2018-06-19 | 陕西汽车集团有限责任公司 | A kind of valve member |
| CN106640815A (en) * | 2016-12-27 | 2017-05-10 | 重庆智神科技有限公司 | Pressure switching device of airtight leakage detecting system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |