CN102591314B - Centralized oxygen supply system and control method - Google Patents
Centralized oxygen supply system and control method Download PDFInfo
- Publication number
- CN102591314B CN102591314B CN 201210081697 CN201210081697A CN102591314B CN 102591314 B CN102591314 B CN 102591314B CN 201210081697 CN201210081697 CN 201210081697 CN 201210081697 A CN201210081697 A CN 201210081697A CN 102591314 B CN102591314 B CN 102591314B
- Authority
- CN
- China
- Prior art keywords
- contact type
- electric contact
- pressure gauge
- solenoid valve
- pressure
- 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
Images
Landscapes
- Separation Of Gases By Adsorption (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The invention discloses a centralized oxygen supply system which comprises a first gas supply branch circuit, a second gas supply branch circuit, a gas supply main circuit, a PLC (Programmable Logic Controller) and an alarm, wherein gas supply pipes of the first gas supply branch circuit and the second gas supply branch circuit are combined and then the combined branch circuit is connected with the gas supply main circuit; a gas output pipe of the gas supply main circuit is fed to an oxygen house; and the PLC is used for controlling the switching on/ switching off of each gas circuit according to the pressure of each gas circuit. The invention also discloses a control method for the centralized oxygen supply system; the PLC main controller is used for detecting the pressure of the first gas supply branch circuit; if the pressure is normal, gas is supplied by the first gas supply branch circuit, and otherwise, an alarm signal is sent and the pressure of the first gas supply branch circuit is detected; if the pressure is normal, the gas is supplied by the first gas supply branch circuit; and the processes are repeatedly circulated. The centralized oxygen supply system for centrally supplying oxygen, which is disclosed by the invention, has the advantages that main and standby are circularly used, so that the oxygen can be continuously and stably supplied; a central controller is automatically switched, and thus simpleness in operation and high efficiency are obtained; due to the adoption of sound and light alarm, accidents are avoided; low-pressure gas supply ensures the safety and the reliability; the centralized oxygen supply system is quick and convenient in use; and the equipment is centralized, so that less space is occupied.
Description
Technical field
The present invention relates to a kind of oxygen system, relate in particular to a kind of concentrated oxygen supply system and control method of automatic control.
Background technology
The place that oxygen consuming amount is large such as hospital, oxygen bar etc. usually have a plurality of rooms need to continue oxygen supply, the simple welding bottle that adopts at present or oxygenerator oxygen supply have use inconvenience, waste of manpower, equipment is many and disperse, shortcoming that inconvenience is managed.So traditional welding bottle or oxygenerator oxygen supply more and more have been not suitable with the centralized management demand of modern society.
Summary of the invention
Purpose of the present invention just is to provide in order to address the above problem a kind of concentrated oxygen supply system and control method of automatic control.
In order to achieve the above object, the present invention has adopted following technical scheme:
concentrated oxygen supply of the present invention system comprises the first oxygen supply bus-bar, the first solenoid valve, the first electric contact type pressure gauge, the second oxygen supply bus-bar, the second solenoid valve, the second electric contact type pressure gauge, the 3rd electric contact type pressure gauge, the PLC primary controller, audible-visual annunciator, carburetor and decompressor, be connected with the entrance of described carburetor after described first solenoid valve of escape pipe series connection of described the first oxygen supply bus-bar, described the first electric contact type pressure gauge is arranged on entering on tracheae of described the first solenoid valve, be connected with the entrance of described carburetor after described second solenoid valve of escape pipe series connection of described the second oxygen supply bus-bar, described the second electric contact type pressure gauge is arranged on entering on tracheae of described the second solenoid valve, the escape pipe of described carburetor is used the oxygen room with delivering to after described decompressor is connected, described the 3rd electric contact type pressure gauge is arranged on the escape pipe of described decompressor, the signal output part of the signal output part of described the first electric contact type pressure gauge, described the second electric contact type pressure gauge be connected the signal output part of the 3rd electric contact type pressure gauge and be connected with the pressure signal input end of described PLC primary controller respectively, the control end of described the first solenoid valve be connected the control end of the second solenoid valve and be connected with the valve control output end of described PLC primary controller respectively, the alarm signal output ends of the signal input part of described audible-visual annunciator and described PLC primary controller.
The first oxygen supply bus-bar, the first solenoid valve and the first electric contact type pressure gauge form one and overlap independently oxygen system, the second oxygen supply bus-bar, the second solenoid valve and the second electric contact type pressure gauge form another set of oxygen system, two cover oxygen systems are realized complementation by the automatic control of PLC primary controller, and the assurance native system can be completed oxygen supply all the time.The automatic control of PLC primary controller is by detecting respectively the pressure of the first electric contact type pressure gauge, the second electric contact type pressure gauge and the 3rd electric contact type pressure gauge, and compare with corresponding normally-pressured neighbor, to judge whether current pressure is in normal range, if, keep current state, if not, realized the exchange of two cover oxygen systems by the open and close of controlling the first solenoid valve and the second solenoid valve by the PLC primary controller, and to the audible-visual annunciator output alarm signal, notify managerial personnel in time to process, guarantee the normal operation of whole system.
Further, described concentrated oxygen supply system also comprises remote controllers, the remote communications port wireless connections of described remote controllers and described PLC primary controller.By remote controllers, the managerial personnel of administrative center can the Real Time Monitoring oxygen system state so that make correctly, determine timely, guarantee that further system normally moves.
Particularly, described the first oxygen supply bus-bar and described the second oxygen supply bus-bar are connected in parallel by three liquid oxygen Dewar flasks respectively and form, and stop valve all is installed on the escape pipe of each described liquid oxygen Dewar flask.In the oxygen supply bus-bar, the quantity of liquid oxygen Dewar flask according to actual needs and different.
Further, on the escape pipe of described decompressor, installed in series in order has stop valve and non-return valve.
Further, deliver to after the escape pipe of the escape pipe of described decompressor and high-pressure oxygen cylinder bus-bar is connected in parallel and use the oxygen room, on the escape pipe of described high-pressure oxygen cylinder bus-bar, stop valve is installed.The high-pressure oxygen cylinder bus-bar replenishes as concentrated oxygen supply of the present invention system, in the situation that still can guarantee oxygen supply just in case two cover liquid oxygen oxygen systems all break down, has further increased the stability of oxygen supply.
the control method of concentrated oxygen supply of the present invention system, PLC primary controller detect the pressure signal of the first electric contact type pressure gauge, the second electric contact type pressure gauge and the 3rd electric contact type pressure gauge and control the first solenoid valve, the second solenoid valve and audible-visual annunciator open and close, described control method comprises the following steps: (1) described PLC primary controller detects the pressure of described the first electric contact type pressure gauge, open described the first solenoid valve if this pressure is in normal range and close described the second solenoid valve and described audible-visual annunciator, simultaneously, described PLC primary controller detects the pressure of described the 3rd electric contact type pressure gauge, sends the alerting signal of main road fault to described audible-visual annunciator if this pressure is in improper scope, (2) pressure of described the first electric contact type pressure gauge of described PLC primary controller continuous detecting, close described the first solenoid valve if this pressure is in improper scope and send the alerting signal of the first oxygen supply bus-bar fault to described audible-visual annunciator, simultaneously, described PLC primary controller detects the pressure of described the second electric contact type pressure gauge, if being in normal range, opens this pressure described the second solenoid valve, simultaneously, described PLC primary controller detects the pressure of described the 3rd electric contact type pressure gauge, if being in improper scope, sends this pressure the alerting signal of main road fault to described audible-visual annunciator, (3) pressure of described the second electric contact type pressure gauge of described PLC primary controller continuous detecting, close described the second solenoid valve if this pressure is in improper scope and send the alerting signal of the second oxygen supply bus-bar fault to described audible-visual annunciator, simultaneously, described PLC primary controller detects the pressure of described the first electric contact type pressure gauge, if being in normal range, opens this pressure described the first solenoid valve, simultaneously, described PLC primary controller detects the pressure of described the 3rd electric contact type pressure gauge, if being in improper scope, sends this pressure the alerting signal of main road fault to described audible-visual annunciator, (4) be cycled to repeat step (2) and step (3).
Further, if described PLC primary controller detects the pressure of the pressure of described the first electric contact type pressure gauge and described the second electric contact type pressure gauge not in normal range, perhaps be consecutively detected the pressure of described the 3rd electric contact type pressure gauge not in normal range, described PLC primary controller can cut out described the first solenoid valve and described the second solenoid valve simultaneously, and sends corresponding alerting signal to described audible-visual annunciator.But the stop valve 4 on the escape pipe of staff's opening high pressure welding bottle bus-bar 14, continue as with oxygen room 15 oxygen supplys at this moment.
Beneficial effect of the present invention is:
Adopt concentrated oxygen supply of the present invention to have the following advantages: active and standby recycling, oxygen supply is continual and steady; Central controller automaticallyes switch, and is simple to operate, efficient is high; Sound and light alarm is stopped accident; Low pressure is supplied gas safe and reliable; Use efficient and convenient; Equipment is concentrated, and occupies little space, and site requirements is unrestricted; Be convenient to management and handling cost low; The early investment fund is few; It is lower that oxygen tank oxygen supply cost is compared in use procedure.
Description of drawings
Accompanying drawing is the structural representation of concentrated oxygen supply of the present invention system.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described in detail:
as shown in drawings, concentrated oxygen supply of the present invention system comprises the first oxygen supply bus-bar, the first solenoid valve 6, the first electric contact type pressure gauge 8, the second oxygen supply bus-bar, the second solenoid valve 7, the second electric contact type pressure gauge 9, the 3rd electric contact type pressure gauge 10, PLC primary controller 2, remote controllers 4, audible-visual annunciator 3, carburetor 11, decompressor 12, stop valve 4, non-return valve 13 and high-pressure oxygen cylinder bus-bar 14, the first oxygen supply bus-bar and the second oxygen supply bus-bar are connected in parallel by three liquid oxygen Dewar flasks 1 respectively and form, stop valve 4 all is installed on the escape pipe of each liquid oxygen Dewar flask 1, be connected with the entrance of carburetor 11 after escape pipe series connection first solenoid valve 6 of the first oxygen supply bus-bar, the first electric contact type pressure gauge 8 is arranged on entering on tracheae of the first solenoid valve 6, be connected with the entrance of carburetor 11 after escape pipe series connection second solenoid valve 7 of the second oxygen supply bus-bar, the second electric contact type pressure gauge 9 is arranged on entering on tracheae of the second solenoid valve 7, the escape pipe of carburetor 11 and decompressor 12, deliver to after being connected in parallel with the escape pipe of high-pressure oxygen cylinder bus-bar 14 again after 13 series connection of stop valve 4 and non-return valve with oxygen room 15, the escape pipe that stop valve 4, the three electric contact type pressure gauges 10 are arranged on decompressor 12 is installed on the escape pipe of high-pressure oxygen cylinder bus-bar 14, the signal output part of the signal output part of the signal output part of the first electric contact type pressure gauge 8, the second electric contact type pressure gauge 9 and the 3rd electric contact type pressure gauge 10 is connected with the pressure signal input end of PLC primary controller 2 respectively, the control end of the first solenoid valve 6 be connected the control end of solenoid valve 7 and be connected with the valve control output end of PLC primary controller 2 respectively, the alarm signal output ends of the signal input part of audible-visual annunciator 3 and PLC primary controller 2, the remote communications port wireless connections of remote controllers 4 and PLC primary controller 2.On the gas main of the first oxygen supply bus-bar, on the gas main of the second oxygen supply bus-bar and entering of carburetor 11 safety valve 5 all is installed on tracheae, be used for exhaust where necessary, protection liquid oxygen Dewar flask 1 can explosion.
As shown in drawings, the first oxygen supply bus-bar, the first solenoid valve 6 and the first electric contact type pressure gauge 8 form one and overlap independently oxygen system, the second oxygen supply bus-bar, the second solenoid valve 7 and the second electric contact type pressure gauge 9 form another set of oxygen system, two cover oxygen systems are realized complementation by the automatic control of PLC primary controller 2, and the assurance native system can be completed oxygen supply all the time.The automatic control of PLC primary controller 2 is by detecting respectively the pressure of the first electric contact type pressure gauge 8, the second electric contact type pressure gauge 9 and the 3rd electric contact type pressure gauge 10, and compare with corresponding normally-pressured neighbor, to judge whether current pressure is in normal range, if, keep current state, if not, realized the exchange of two cover oxygen systems by the open and close of controlling the first solenoid valve and the second solenoid valve by the PLC primary controller, and to audible-visual annunciator 3 output alarm signals, notify managerial personnel in time to process, guarantee the normal operation of whole system.
By reference to the accompanying drawings, the control method of concentrated oxygen supply of the present invention system comprises the following steps: (1) PLC primary controller 2 detects the pressure of the first electric contact type pressure gauges 8, open the first solenoid valve 6 if this pressure is in normal range and close the second solenoid valve 7 and audible-visual annunciator 3, simultaneously, PLC primary controller 2 detects the pressure of the 3rd electric contact type pressure gauge 10, sends the alerting signal of main road fault to audible-visual annunciator 3 if this pressure is in improper scope; (2) pressure of PLC primary controller 2 continuous detecting the first electric contact type pressure gauges 8, close the first solenoid valve 6 if this pressure is in improper scope and send the alerting signal of the first oxygen supply bus-bar fault to audible-visual annunciator 3, simultaneously, PLC primary controller 2 detects the pressure of the second electric contact type pressure gauge 9, if being in normal range, opens this pressure the second solenoid valve 7, simultaneously, PLC primary controller 2 detects the pressure of the 3rd electric contact type pressure gauge 10, sends the alerting signal of main road fault to audible-visual annunciator 3 if this pressure is in improper scope; (3) pressure of PLC primary controller 2 continuous detecting the second electric contact type pressure gauges 9, close the second solenoid valve 7 if this pressure is in improper scope and send the alerting signal of the second oxygen supply bus-bar fault to audible-visual annunciator 3, simultaneously, PLC primary controller 2 detects the pressure of the first electric contact type pressure gauge 8, if being in normal range, opens this pressure the first solenoid valve 6, simultaneously, PLC primary controller 2 detects the pressure of the 3rd electric contact type pressure gauge 10, sends the alerting signal of main road fault to audible-visual annunciator 3 if this pressure is in improper scope; (4) be cycled to repeat step (2) and step (3).
If PLC primary controller 2 detects the pressure of the pressure of the first electric contact type pressure gauge 8 and the second electric contact type pressure gauge 9 not in normal range, perhaps be consecutively detected the pressure of the 3rd electric contact type pressure gauge 10 not in normal range, PLC primary controller 2 can cut out the first solenoid valve 6 and the second solenoid valve 7 simultaneously, and sends corresponding alerting signal to audible-visual annunciator 3.But the stop valve 4 on the escape pipe of staff's opening high pressure welding bottle bus-bar 14, continue as with oxygen room 15 oxygen supplys at this moment.
Concentrated oxygen supply of the present invention system is particularly useful for the ward oxygen supply of hospital, is a kind of modern hospital oxygen system, has increased substantially the oxygen supply automatic management level of hospital.
Claims (6)
1. concentrated oxygen supply system, it is characterized in that: comprise the first oxygen supply bus-bar, the first solenoid valve, the first electric contact type pressure gauge, the second oxygen supply bus-bar, the second solenoid valve, the second electric contact type pressure gauge, the 3rd electric contact type pressure gauge, the PLC primary controller, audible-visual annunciator, carburetor and decompressor, be connected with the entrance of described carburetor after described first solenoid valve of escape pipe series connection of described the first oxygen supply bus-bar, described the first electric contact type pressure gauge is arranged on entering on tracheae of described the first solenoid valve, be connected with the entrance of described carburetor after described second solenoid valve of escape pipe series connection of described the second oxygen supply bus-bar, described the second electric contact type pressure gauge is arranged on entering on tracheae of described the second solenoid valve, the escape pipe of described carburetor is used the oxygen room with delivering to after described decompressor is connected, described the 3rd electric contact type pressure gauge is arranged on the escape pipe of described decompressor, deliver to after the escape pipe of the escape pipe of described decompressor and high-pressure oxygen cylinder bus-bar is connected in parallel and use the oxygen room, on the escape pipe of described high-pressure oxygen cylinder bus-bar, stop valve is installed, the signal output part of the signal output part of described the first electric contact type pressure gauge, described the second electric contact type pressure gauge be connected the signal output part of the 3rd electric contact type pressure gauge and be connected with the pressure signal input end of described PLC primary controller respectively, the control end of described the first solenoid valve be connected the control end of the second solenoid valve and be connected with the valve control output end of described PLC primary controller respectively, the alarm signal output ends of the signal input part of described audible-visual annunciator and described PLC primary controller.
2. concentrated oxygen supply according to claim 1 system is characterized in that: described concentrated oxygen supply system also comprises remote controllers, the remote communications port wireless connections of described remote controllers and described PLC primary controller.
3. concentrated oxygen supply according to claim 1 system, it is characterized in that: described the first oxygen supply bus-bar and described the second oxygen supply bus-bar are connected in parallel by three liquid oxygen Dewar flasks respectively and form, and stop valve all is installed on the escape pipe of each described liquid oxygen Dewar flask.
4. concentrated oxygen supply according to claim 1 system, it is characterized in that: on the escape pipe of described decompressor, installed in series in order has stop valve and non-return valve.
5. the control method of a concentrated oxygen supply as claimed in claim 1 system, the PLC primary controller detects the first electric contact type pressure gauge, the pressure signal of the second electric contact type pressure gauge and the 3rd electric contact type pressure gauge is also controlled the first solenoid valve, the second solenoid valve and audible-visual annunciator open, close, it is characterized in that: described control method comprises the following steps: (1) described PLC primary controller detects the pressure of described the first electric contact type pressure gauge, open described the first solenoid valve if this pressure is in normal range and close described the second solenoid valve and described audible-visual annunciator, simultaneously, described PLC primary controller detects the pressure of described the 3rd electric contact type pressure gauge, if being in improper scope, sends this pressure the alerting signal of main road fault to described audible-visual annunciator, (2) pressure of described the first electric contact type pressure gauge of described PLC primary controller continuous detecting, close described the first solenoid valve if this pressure is in improper scope and send the alerting signal of the first oxygen supply bus-bar fault to described audible-visual annunciator, simultaneously, described PLC primary controller detects the pressure of described the second electric contact type pressure gauge, if being in normal range, opens this pressure described the second solenoid valve, simultaneously, described PLC primary controller detects the pressure of described the 3rd electric contact type pressure gauge, if being in improper scope, sends this pressure the alerting signal of main road fault to described audible-visual annunciator, (3) pressure of described the second electric contact type pressure gauge of described PLC primary controller continuous detecting, close described the second solenoid valve if this pressure is in improper scope and send the alerting signal of the second oxygen supply bus-bar fault to described audible-visual annunciator, simultaneously, described PLC primary controller detects the pressure of described the first electric contact type pressure gauge, if being in normal range, opens this pressure described the first solenoid valve, simultaneously, described PLC primary controller detects the pressure of described the 3rd electric contact type pressure gauge, if being in improper scope, sends this pressure the alerting signal of main road fault to described audible-visual annunciator, (4) be cycled to repeat step (2) and step (3).
6. the control method of concentrated oxygen supply according to claim 5 system, it is characterized in that: if described PLC primary controller detects the pressure of the pressure of described the first electric contact type pressure gauge and described the second electric contact type pressure gauge not in normal range, perhaps be consecutively detected the pressure of described the 3rd electric contact type pressure gauge not in normal range, described PLC primary controller can cut out described the first solenoid valve and described the second solenoid valve simultaneously, and sends corresponding alerting signal to described audible-visual annunciator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210081697 CN102591314B (en) | 2012-03-26 | 2012-03-26 | Centralized oxygen supply system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210081697 CN102591314B (en) | 2012-03-26 | 2012-03-26 | Centralized oxygen supply system and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102591314A CN102591314A (en) | 2012-07-18 |
| CN102591314B true CN102591314B (en) | 2013-11-06 |
Family
ID=46480141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210081697 Active CN102591314B (en) | 2012-03-26 | 2012-03-26 | Centralized oxygen supply system and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102591314B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103574281B (en) * | 2012-07-26 | 2016-01-06 | 北大方正集团有限公司 | A kind of special gas frame, the method monitoring special gas frame and device |
| CN104155884A (en) * | 2014-06-29 | 2014-11-19 | 深圳市赛亿科技开发有限公司 | Smart control method for negative ion oxygen bar |
| CN104456080A (en) * | 2014-11-14 | 2015-03-25 | 武汉钢铁(集团)公司 | Laboratory continuous air supplying system |
| CN105036085B (en) * | 2015-08-05 | 2017-06-27 | 湖南泰瑞医疗科技有限公司 | Bidirectional closed-loop automatic switching control equipment |
| CN107504372A (en) * | 2017-10-09 | 2017-12-22 | 陈梓楠 | A kind of medical apparatus of oxygen supply |
| CN107544422A (en) * | 2017-10-20 | 2018-01-05 | 成都华气厚普机电设备股份有限公司 | A kind of civilian gasification sledge automatic control system of LNG Dewar bottles and control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000172317A (en) * | 1998-12-09 | 2000-06-23 | Mitsubishi Electric Corp | Programmable machine controller built in numerical controller and network system for numerical controller |
| CN1659487A (en) * | 2002-04-13 | 2005-08-24 | 恩德莱斯和豪瑟尔分析仪表两合公司 | Measuring device used in process technology, comprising a central power supply unit |
| CN101285554A (en) * | 2008-06-10 | 2008-10-15 | 中国人民解放军军事医学科学院卫生装备研究所 | Multipath oxygen filling system |
| CN201715239U (en) * | 2010-07-23 | 2011-01-19 | 哈尔滨黎明气体有限公司 | Supply pressure-adjustment device of a hospital gas supply system |
| CN202533791U (en) * | 2012-03-26 | 2012-11-14 | 成都新炬化工有限公司 | Centralized oxygen supply system |
-
2012
- 2012-03-26 CN CN 201210081697 patent/CN102591314B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000172317A (en) * | 1998-12-09 | 2000-06-23 | Mitsubishi Electric Corp | Programmable machine controller built in numerical controller and network system for numerical controller |
| CN1659487A (en) * | 2002-04-13 | 2005-08-24 | 恩德莱斯和豪瑟尔分析仪表两合公司 | Measuring device used in process technology, comprising a central power supply unit |
| CN101285554A (en) * | 2008-06-10 | 2008-10-15 | 中国人民解放军军事医学科学院卫生装备研究所 | Multipath oxygen filling system |
| CN201715239U (en) * | 2010-07-23 | 2011-01-19 | 哈尔滨黎明气体有限公司 | Supply pressure-adjustment device of a hospital gas supply system |
| CN202533791U (en) * | 2012-03-26 | 2012-11-14 | 成都新炬化工有限公司 | Centralized oxygen supply system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102591314A (en) | 2012-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102591314B (en) | Centralized oxygen supply system and control method | |
| CN202351692U (en) | Linked control system for water supply of a plurality of pool trains | |
| CN201364488Y (en) | Electric switching control module for nuclear power station electric power plant | |
| CN203909638U (en) | Automatic gas booster | |
| CN201364487Y (en) | Incoming line switch control module for nuclear power station electric power plant | |
| CN104006289A (en) | Skid-mounting full integration LNG and LCNG remote monitor unattended filling station | |
| CN203488979U (en) | Skid-mounted full-integrated LNG (Liquefied Natural Gas) and LCNG (Liquefied Compressed Natural Gas) remote control monitored unattended filling station | |
| CN102961842A (en) | Fire alarm joint control system applied to chemical enterprise | |
| KR20150066250A (en) | Digital Full automatic valve cross-over and controlling system for apparatus of supplying the high pressure gas for industry | |
| CN201889590U (en) | Continuous air feeding device | |
| CN202533791U (en) | Centralized oxygen supply system | |
| CN204213620U (en) | A kind of three level security devices of LNG gas station | |
| CN203911572U (en) | Primary device and standby device automatic switching and control circuit in energy-saving building, and primary device and standby device automatic switching system in energy-saving building | |
| CN103151830B (en) | Substation with internal bridge automatic throw-in equipment of emergency power supply | |
| CN105182165B (en) | A kind of mobile power supply ground wire connection status monitors in real time and the system of fault location | |
| CN105544646B (en) | A kind of flexible switching system of indoor multi-water resources and method based on water pressure conditions | |
| CN103414247B (en) | The control of returning of multiple-circuit line transmission system coordinates switched system and changing method | |
| CN201392993Y (en) | DCS control module for nuclear power engineering transformer | |
| CN204219552U (en) | A kind of uninterrupted oxygen system | |
| CN202363958U (en) | Backup power supply control system based on fuel battery | |
| CN204300679U (en) | LNG mono-pump two-shipper filling station control system | |
| CN201365140Y (en) | Feeder line switch control module for nuclear power station electric power plant | |
| CN205027847U (en) | System for remove power supply ground connection state real -time supervision and fault locating | |
| CN202707453U (en) | Water-level controller | |
| CN103529143B (en) | Gas pipeline self-actuated controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xia Shaoyong Inventor before: Xia Shaoyong |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |