CN105114806B - Double-side high-pressure gas cylinder gas supply switching system - Google Patents
Double-side high-pressure gas cylinder gas supply switching system Download PDFInfo
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- CN105114806B CN105114806B CN201510594865.XA CN201510594865A CN105114806B CN 105114806 B CN105114806 B CN 105114806B CN 201510594865 A CN201510594865 A CN 201510594865A CN 105114806 B CN105114806 B CN 105114806B
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Abstract
The invention discloses a double-side high-pressure gas cylinder gas supply switching system. According to the system, a pressure sensing valve collects data and transmits the data to a printed circuit board (PCB) for controlling the gas output of one magnetic valve; gas is added into first-level pressure reducing valves, and pressure difference is generated between the output pressure of the first-level pressure reducing valves at the two sides; the gas enters a tee-joint one-way valve, the first-level pressure reducing valve through which the gas is added on one side is used, and the other first-level pressure reducing valve on the other side is in a standby state; when the gas at the used side is used gradually and used up, the pressure sensing valve transmits a signal, the original magnetic valve is switched off through the PCB, and meanwhile the other magnetic valve is switched on, the gas is added into the other first-level pressure reducing valve, the gas in the tee-joint one-way valve is supplied by the standby gas end instead of the original gas supply end, and therefore the automatic switching of the system is achieved; the system has a state indication function and an alarm prompt function, and the input pressure value and output pressure value can be displayed in time through a digital tube of the PCB. The switching pressure is controlled through a pressure sensing element inside the switching system and can be set accurately according to user requirements.
Description
Technical field
The present invention relates to a kind of air supply system, and in particular to suitable for supplying the supply as supply source of the gas using gas cylinder
The supply switched system of system.
Background technology
Gas cylinder is to store and transport permanent gas, liquid according to different pressures, non-co-content, different structure form and different materials
The portable pressure of the disposable or repeatable inflation of activating QI body and dissolved gas holds valve.
Because gas pressure of the inside of a bottle is higher, and pressure required when using is less, so needing with air relief valve come storage
The gas of the elevated pressures in gas cylinder is reduced to low-pressure gas, and the operating pressure needed for ensureing keeps from start to finish stable shape
State.
Because downstream needs continual source of the gas, uninterruptedly to supply when steel cylinder is changed, be that this people is high using bilateral
The mode of air bottle supply is realizing uninterrupted supply.But existing uninterrupted air supply system poor reliability, it is impossible under realization
The stable source of the gas of the continual output of trip.Therefore for the air supply system of bilateral gas cylinder supply, how to realize reliable and stable
Uninterrupted supply is the problem of this area urgent need to resolve.
Furthermore, when using for toxic and harmful decompression, because air relief valve life-time service or gas reason cause decompression
Valve breaks down so that leakage occurs in gas, causes to occur in working environment to diffuse poisonous and hazardous gas, endangers staff
Life security, it is ensured that the personal safety of staff, is also this area urgently technical issues that need to address.
The content of the invention
The problem of the stable source of the gas of uninterrupted output cannot be realized for existing air supply system, it is an object of the invention to provide
A kind of bilateral gas cylinder supplies switched system, and the system, can be by high pressure for the air supply system of bilateral gas cylinder supply
Gas is reduced to low-pressure gas, and full-automatic switching can be realized between the cylinder supplies of both sides, and reliable and stable continuing is downstream defeated
Go out gas.
In order to achieve the above object, the present invention is adopted the following technical scheme that：
A kind of bilateral gas cylinder supplies switched system, and the switched system includes：
Cabinet, the cabinet is used for fixed system gas circuit pipe fitting part；
One-level pressure relief valve component：The one-level pressure relief valve component include two sets one-level pressure relief valves, two sets connect air inlet pipeline,
Two sets of loose-joint pipelines, the inlet end for often covering one-level pressure relief valve is connected with a set of connection air inlet pipeline, outlet side and a set of adjustable joint
Road is connected, and inlet pipe connection road is connected with source of the gas；
High-pressure senses valve module：High-pressure sensing valve module includes two sets of high-pressure transducer valves, two sets
High-pressure transducer valve air inlet is connected air inlet pipeline and is connected with two sets respectively；
Tee one-way valve, the two ends air inlet of the tee one-way valve is connected respectively with two sets of loose-joint pipelines；
High-pressure safety valve, the inlet end of the high-pressure safety valve is connected to tee one-way valve；
Tee ball valve component, the tee ball valve component includes tee ball valve, ball valve air inlet loose-joint pipeline, and the ball valve enters
Gas loose-joint pipeline one end is connected with the tee one-way valve port of export, and the other end is connected with tee ball valve inlet end；
Welding union elbow component：The welding union elbow component includes two sets of welding union elbows, respectively with threeway
The port of export of ball valve two is connected；
Two grades of output pressure reducing valve components, described two grades of output pressure reducing valve component two sets of two grades of output air relief valve of envelope, two sets
Connecting bend, two sets of output articulating joints；Often cover two grades of output air relief valve and be arranged on a set of connecting bend with a set of output loose joint
Between joint, often cover connecting bend and be connected with welding union elbow respectively；
Output module group, the output module group includes output module valve group, two sets of jointings, and output module valve group sets
Put in the middle of two sets of jointings, two sets of jointings export respectively two sets of output articulating joint phases in pressure reducing valve components with two grades
Connection；
Air relief valve, the driving air relief valve inlet end is driven to be connected with output module valve group top screwed hole；
Low-pressure safety valve, the low-pressure safety valve air inlet connects with the first joint of output module valve group top four-way connection
Connect；
Low pressure transducer valve, the low pressure transducer valve air inlet is connected with the second joint of four-way connection；
Low pressure gauge, the low pressure gauge inlet end is connected with the joint of four-way connection the 3rd；
High-pressure manometer component, the high-pressure manometer component includes two sets of high-pressure manometers, is separately positioned on two set one
At the pressure hole of level air relief valve；
Discharge and take over road, the discharge is simultaneously taken over road and is connected with low-pressure safety valve floss hole for high-pressure safety valve floss hole
Pipeline, and be connected at housing discharge preset holes by pipe joint；
Solenoid valve block, the solenoid valve block includes a two-bit triplet normal-closed electromagnetic valve and a two-bit triplet open type
Electromagnetic valve, splice connection joint, driving gas-guide pipeline, wherein two electromagnetic valves are reduced pressure by splice connection joint and after connecing with driving
Valve outlet port is connected, and the outfan of two electromagnetic valves is driven respectively by the upper lid for driving gas-guide pipeline to be connected to two sets of one-level pressure relief valves
Dynamic air source input end；
Control board, the control board is arranged on casing.
Power supply case, the power supply case is arranged in casing, there is provided working power.
Preferably, the switched system also includes indicating label, and the indicating label is as box cover.
Preferably, the one-level pressure relief valve is first stage piston air relief valve.
Preferably, the control board is PCB surface-mounted integrated circuits.
Preferably, it is provided with display screen on PCB surface-mounted integrated circuits.
Preferably, the power supply case includes power box, DC24V Switching Power Supplies, fuse, binding post, power supply
Line plug.
The scheme that the present invention is provided mainly gathers two sets of one-level pressure relief valves and realizes full-automatic switching supply, and by selecting two
The stable source of the gas of any one output of individual second depressurized valve is for using, and another second depressurized valve is achievable to keep in repair not as standby
Interruption supply.
And be to prevent air relief valve pressure from climbing to air relief valve and downstream pipe and equipment using danger is brought, the present invention is in pipe
High and low pressure relief valve is set on road, can releasing pressure automatically when pressure is beyond setting pressure.
Description of the drawings
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
The internal structure schematic diagram of the supply switched system that Fig. 1 is provided for the present invention；
The outside schematic diagram of the supply switched system that Fig. 2 is provided for the present invention.
Specific embodiment
In order that technological means, creation characteristic, reached purpose and effect that the present invention is realized are easy to understand, tie below
Conjunction is specifically illustrating, and the present invention is expanded on further.
Referring to Fig. 1 and Fig. 2, its Full automatic digital for showing present invention offer shows bilateral gas cylinder supply switching system
The structural representation of system.
As seen from the figure, the supply switched system mainly includes：Casing 1, one-level pressure relief valve component 2, high-pressure transducer valve
Component 3, tee one-way valve 4, high-pressure safety valve 5, tee ball valve component 6, welding union elbow 7, two grades of output air relief valve of component
Component 8, output module group 9, driving air relief valve 10, low-pressure safety valve 11, low pressure transducer valve 12, low pressure gauge 13, height
Pressure pressure table component 14, discharge and take over road 15, control board 16, solenoid valve block 17, indicating label 18, power supply case
(not shown).
Wherein casing 1, is made up of base with upper lid two parts, and base is arranged on system bottom, for installing fixed system
Pipe fitting part, the upper lid back side is used to install PCB surface-mounted integrated circuits 16, and front is used to arrange indicating label 18, for work instruction.
By two pairs of chain connections between base and upper lid, lid is dug more than after certain angle, the support bar change of both sides is propped up, from
And the function of fixed cover is reached, easily the parts on base can be maintained.
One-level pressure relief valve component 2, it includes (the specially DOME pistons decompression of two sets of first stage piston air relief valve of left and right side
Valve), two sets of connection air inlet pipelines, two sets loose-joint pipelines, two sets first stage piston air relief valve be separately positioned on connect air inlet pipeline and
In the middle of loose-joint pipeline, air relief valve inlet end is connected with air inlet pipeline is connected, and outlet side is connected with loose-joint pipeline, inlet pipe connection road
It is connected with source of the gas (beginning that source of the gas can be controlled by external high pressure stop valve).
High-pressure senses valve module 3, and it includes two sets of high-pressure transducer valves of left and right side, is arranged on the connection of both sides
Air inlet pipeline top, high-pressure transducer valve air inlet is connected respectively with the connection air inlet pipe top elbow of both sides.
Tee one-way valve component 4, it is arranged in the middle of total inlet pipe road, two ends air inlet respectively with arranged on left and right sides one-level
Piston decompression valve outlet port loose-joint pipeline is connected.
High-pressure safety valve 5, it is arranged on one-level pressure relief valve rear end, and relief valve inlet end is connected to tee one-way valve rear end
Screwed hole.
Tee ball valve component 6, it includes tee ball valve, ball valve air inlet loose-joint pipeline, ball valve air inlet loose-joint pipeline one end with
The tee one-way valve port of export connects, and the other end is connected with tee ball valve inlet end.
Welding union elbow 7, it includes two sets of silver soldering welding union elbows, is connected with the port of export of tee ball valve two respectively
Connect.
Two grades of output pressure reducing valve components 8, two grades of output air relief valve of its envelope two set, two sets of connecting bends, two sets of outputs are lived
Joint；Two sets of two grades of output air relief valve are separately positioned between connecting bend and output articulating joint, connecting bend respectively with
Welding union elbow is connected.
Output module group 9, it includes output module valve group, two sets of jointings, and output module valve group is arranged on two sets of companies
In the middle of joint, two jointings are connected respectively with two grades of output air relief valve output articulating joints.
Drive air relief valve 10, its be arranged on output module valve group top preceding thread hole at, drive air relief valve inlet end with it is defeated
Go out module valve group top screwed hole to be connected.
Low-pressure safety valve 11, it is arranged on output module valve group top four-way connection left side, relief valve air inlet and four-way
The threaded connection of joint left side.
Low pressure transducer valve 12, its be arranged on output module top four-way connection right side, pressure sensing valve air inlet with
The threaded connection of four-way connection right side.
Low pressure gauge 13, it is arranged on output module top four-way connection top, low-pressure meter inlet end and four-way connection
Top threaded connection.
High-pressure manometer component 14, it includes arranged on left and right sides high-pressure manometer, is respectively provided at both sides air inlet first stage piston
At the pressure hole of air relief valve top.
Road 15 is discharged and takes over, it is high-pressure safety valve floss hole and low-pressure safety valve floss hole connecting line, and is passed through
Pipe joint is connected at housing discharge preset holes.
Solenoid valve block 17, it include a two-bit triplet normal-closed electromagnetic valve and two-bit triplet normal-open electromagnetic valve,
Splice connection joint, gas-guide pipeline is driven, electromagnetic valve valve group is arranged on driving air relief valve exit, after two electromagnetic valves pass through and connect
It is connected with decompression valve outlet port is driven, electromagnetic valve outfan is connected to the decompression of left and right side one-level by driving gas-guide pipeline respectively
The upper lid of valve drives air source input end.
Indicating label 18, it is attached to box cover, label display lamp be position for control board display lamp (referring to
Fig. 2).
Control board 16, specially PCB surface-mounted integrated circuits are arranged on box cover center, and respectively control connection is supplied
Each valve, table, lamp and electromagnetic valve in gas switched system.
The display screen being made up of charactron is additionally provided with the PCB surface-mounted integrated circuits, for showing input and output pressure in real time
Force value.
Power supply case, including power box, DC24V Switching Power Supplies, fuse, binding post, power-line plug etc..With
Each building block provides stable working power in supply switched system.
Thus when in use, high-pressure air source is entered the supply switched system for constituting by the inlet pipe connection road of the left and right sides
The first stage piston air relief valve of both sides, the initial output pressure of first stage piston air relief valve (can assume initial pressure by spring pressure regulation
It is set to 100PSI), high-pressure transducer valve 3 is housed, for monitoring the admission pressure at two ends, gases at high pressure on inlet pipe connection road
After the decompression of first stage piston air relief valve, into tee one-way valve component 4, the outlet module group 9 of bus-bar, gas all the way is drawn
The output pressure (hypothesis is set to 55PSI) of air relief valve is driven to air relief valve 10, adjustment is driven.
Then two inputs of electromagnetic valve 17, the output point of two electromagnetic valves are connected to by driving the outfan of air relief valve
In not being passed through the first stage piston air relief valve of the left and right sides, the break-make of electromagnetic valve is controlled by control circuit internal logic circuit, its
In electromagnetic valve open, another closed electromagnetic valve, then the air relief valve output pressure of side is 100PSI+55PSI=
155PSI, and opposite side first stage piston air relief valve output pressure is still 100PSI；Now gas passes through tee one-way valve by pressure
High side by using, and opposite side gas circuit close it is standby.Gas out enters afterwards tee ball valve, threeway by tee one-way valve
There is arrow to indicate on ball valve handle, control gas inflow left side or right side second depressurized valve by adjusting handle direction, then
Gas is exported to client's pipeline after being reduced pressure again by second depressurized device and used.
From the foregoing, it will be observed that the system is sent to PCB surface-mounted integrated circuits by pressure sensing valve gathered data, to control electricity all the way
Magnet valve gas is exported, and adds first stage piston air relief valve, makes both sides first stage piston air relief valve output pressure pressure reduction occur, enters three
Logical check valve, the first stage piston air relief valve for making the side of addition gas is used, and opposite side is then in resting state, when using side
Gas is petered out when being exhausted, and pressure sensing valve sends signal, former electromagnetic valve is turned off by PCB surface-mounted integrated circuits, while opening
Another electromagnetic valve is opened, and adds another first stage piston air relief valve, tee one-way valve gas to have original supply end to be switched to gas
Cushion gas body end is supplied, it is achieved thereby that the automatic switchover of system, and with state instruction and prompt functions, on pcb board
Charactron can in real time show input and output pressure value.This process is automatically performed completely without manual intervention by switched system.
Switching pressure is controlled by the pressure responsive element inside switched system, can require accurate setting according to user.
Bilateral gas cylinder supply switched system, detailed description below are shown for the Full automatic digital that such scheme is constituted
Once it carries out supplying the operating process of automatic switchover：
1. under original state, bus-bar switches on power, and due to both sides also access failure source of the gas, pressure transducer can give control electricity
Road partitioned signal, both sides " EMPTY " red light on panel lights display module and can show that pressure value is 0, and with alarm sound, table
Show that two ends source of the gas is exhausted.
2. it is slow to open right side main stop valve, make source gas enter bus-bar right side, air inlet end pressure in right side rises, this
When pressure transducer generation action give control circuit partitioned signal, right side " EMPTY " red light on panel extinguishes " IN USE " green light
Light, display is currently in use right side gas circuit.Pressure value now is shown on display module.
3. when the right side of control board display simultaneously is " IN USE " green light, circuit board can control electromagnetic valve and give right side one-level
Input pressure in piston air relief valve, now the outlet pressure of right side decompressor is that spring initial pressure adds bus-bar outlet pressure
Check valve can be pressed to the low other side of pressure by sum, gas pressure, then the circulation of right wing gas circuit, the closing of left side gas circuit.
4. it is slow again to open left side main stop valve, make source gas enter bus-bar left side, air inlet end pressure in left side rises,
Control circuit partitioned signal is given in now pressure transducer generation action, and left side " EMPTY " red light on panel extinguishes " READY " amber light
Light, show left side source of the gas abundance resting state.Pressure value now is shown on display module.
5. when the left side of control board display simultaneously is " READY " amber light, circuit board can control another electromagnetic valve to close
Will not be to input pressure in the first stage piston air relief valve of left side, now the outlet pressure of left side decompressor is spring initial pressure, in
Between check valve left pressure be less than right atrial pressure, then right wing gas circuit circulation, left side gas circuit closing.
6. when right side source of the gas peters out insufficient pressure, control circuit partitioned signal, face are given in pressure transducer generation action
Right side " IN USE " green light on plate extinguishes " EMPTY " red light and lights, the prompting changing source of the gas while chimes of doom sounds, on panel
Left side " READY " amber light extinguishes " IN USE " green light and lights expression use left side gas source feed.
7. when now control board display left side is " IN USE " green light, circuit board can control electromagnetic valve and give left side one-level
Input pressure in piston air relief valve, while controlling another closed electromagnetic valve and arranging the gas in the first stage piston air relief valve of right side
Go out, discharge pressure, then the outlet pressure of left side decompressor is that spring initial pressure adds bus-bar outlet pressure sum, gas pressure
Check valve can be pressed to the low other side of pressure by power, then the circulation of left gas circuit, the closing of right side gas circuit.So as to realize cutting automatically
Change.
8. source of the gas outfan be equipped with a low-pressure sensor, when using tolerance exceed bus-bar metered flow
When, pressure transducer can send signal to control board, can send warning buzzer by the control of circuit board internal logic and carry
Show.
From the foregoing, it will be observed that gases at high pressure are reduced to low-pressure gas and can be realized between the cylinder supplies of both sides entirely certainly by the system
Dynamic switching, continues downstream to export gas.
Ultimate principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel it should be appreciated that the present invention is not restricted to the described embodiments, the simply explanation described in above-described embodiment and description this
The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes
Change and improvement is both fallen within scope of the claimed invention.The claimed scope of the invention by appending claims and its
Equivalent thereof.
Claims (6)
1. a kind of bilateral gas cylinder supplies switched system, it is characterised in that the switched system includes：
Cabinet, the cabinet is used for fixed system gas circuit pipe fitting part；
One-level pressure relief valve component：The one-level pressure relief valve component include two sets one-level pressure relief valves, two sets connect air inlet pipeline, two sets
Loose-joint pipeline, the inlet end for often covering one-level pressure relief valve is connected with a set of connection air inlet pipeline, outlet side and a set of loose-joint pipeline phase
Even, inlet pipe connection road is connected with source of the gas；
High-pressure senses valve module：The high-pressure sensing valve module includes two sets of high-pressure transducer valves, two sets of high pressure
Pressure sensing valve air inlet is connected air inlet pipeline and is connected with two sets respectively；
Tee one-way valve, the two ends air inlet of the tee one-way valve is connected respectively with two sets of loose-joint pipelines；
High-pressure safety valve, the inlet end of the high-pressure safety valve is connected to tee one-way valve；
Tee ball valve component, the tee ball valve component includes tee ball valve, ball valve air inlet loose-joint pipeline, and the ball valve air inlet is lived
Adapter road one end is connected with the tee one-way valve port of export, and the other end is connected with tee ball valve inlet end；
Welding union elbow component：The welding union elbow component includes two sets of welding union elbows, respectively with tee ball valve
Two ports of export are connected；
Two grades of output pressure reducing valve components, two grades of output pressure reducing valve component includes two sets of two grades of output air relief valve, two sets of connections
Elbow, two sets of output articulating joints；Often cover two grades of output air relief valve and be arranged on a set of connecting bend with a set of output articulating joint
Between, often cover connecting bend and be connected with welding union elbow respectively；
Output module group, the output module group includes output module valve group, two sets of jointings, and output module valve group is arranged on
In the middle of two sets of jointings, two sets of jointings are connected respectively with two sets of output articulating joints in two grades of output pressure reducing valve components
Connect；
Air relief valve, the driving air relief valve inlet end is driven to be connected with output module valve group top screwed hole；
Low-pressure safety valve, the low-pressure safety valve air inlet is connected with the first joint of output module valve group top four-way connection；
Low pressure transducer valve, the low pressure transducer valve air inlet is connected with the second joint of four-way connection；
Low pressure gauge, the low pressure gauge inlet end is connected with the joint of four-way connection the 3rd；
High-pressure manometer component, the high-pressure manometer component includes two sets of high-pressure manometers, is separately positioned on two sets of one-levels and subtracts
At the pressure hole of pressure valve；
Road is discharged and takes over, the discharge simultaneously takes over road for high-pressure safety valve floss hole and low-pressure safety valve floss hole connecting tube
Road, and be connected at housing discharge preset holes by pipe joint；
Solenoid valve block, the solenoid valve block includes a two-bit triplet normal-closed electromagnetic valve and a two-bit triplet open type electromagnetism
Valve, splice connection joint, driving gas-guide pipeline, wherein two electromagnetic valves are gone out by splice connection joint and after connecing with air relief valve is driven
Mouth is connected, and the outfan of two electromagnetic valves is connected to the upper lid drive gas of two sets of one-level pressure relief valves by driving gas-guide pipeline respectively
Source input；
Control board, the control board is arranged on casing；
Power supply case, the power supply case is arranged in casing, there is provided working power.
2. a kind of bilateral gas cylinder according to claim 1 supplies switched system, it is characterised in that the switched system
Also include indicating label, the indicating label is as box cover.
3. a kind of bilateral gas cylinder according to claim 1 supplies switched system, it is characterised in that the one-level decompression
Valve is first stage piston air relief valve.
4. a kind of bilateral gas cylinder according to claim 1 supplies switched system, it is characterised in that the control circuit
Plate is PCB surface-mounted integrated circuits.
5. a kind of bilateral gas cylinder according to claim 4 supplies switched system, it is characterised in that the PCB is integrated
Display screen is provided with circuit board.
6. a kind of bilateral gas cylinder according to claim 1 supplies switched system, it is characterised in that the power supply
Case includes power box, DC24V Switching Power Supplies, fuse, binding post, power-line plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510594865.XA CN105114806B (en) | 2015-09-17 | 2015-09-17 | Double-side high-pressure gas cylinder gas supply switching system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510594865.XA CN105114806B (en) | 2015-09-17 | 2015-09-17 | Double-side high-pressure gas cylinder gas supply switching system |
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| CN105114806A CN105114806A (en) | 2015-12-02 |
| CN105114806B true CN105114806B (en) | 2017-04-26 |
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| CN201510594865.XA Active CN105114806B (en) | 2015-09-17 | 2015-09-17 | Double-side high-pressure gas cylinder gas supply switching system |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075120A (en) * | 2014-06-19 | 2014-10-01 | 江苏中靖新能源科技有限公司 | Automatic switching device special for hydrogen fuel cell gas path system |
| CN105665374B (en) * | 2016-01-06 | 2018-08-21 | 北京航天发射技术研究所 | Engine blows down gas circuit |
| CN106907569A (en) * | 2017-02-10 | 2017-06-30 | 周国炳 | Differential automatic compensation compressed air source unit |
| CN108194828B (en) * | 2017-12-25 | 2020-03-27 | 捷锐企业(上海)有限公司 | Mixed air source air supply system |
| CN108050390B (en) * | 2018-01-25 | 2024-03-26 | 上海正帆科技股份有限公司 | Gas valve separating box and gas conveying equipment |
| CN111561658B (en) * | 2020-04-27 | 2024-04-26 | 山西汾西重工有限责任公司 | Two-stage gas output control device and control method thereof |
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|---|---|---|---|---|
| CN1221090A (en) * | 1997-12-24 | 1999-06-30 | 液体空气乔治洛德方法利用和研究有限公司 | Device for distributing working gas and installation for supplying working gas that is equipment with such device |
| CN200979071Y (en) * | 2006-11-30 | 2007-11-21 | 马国民 | Mobile high pressure air supply and nitrogen pressurization station |
| CN203927406U (en) * | 2014-06-24 | 2014-11-05 | 上海森松制药设备工程有限公司 | A kind of pipeline switch boards |
| CN205191204U (en) * | 2015-09-17 | 2016-04-27 | 捷锐企业(上海)有限公司 | Two side gas cylinder air feed switched systems |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008045650A (en) * | 2006-08-14 | 2008-02-28 | Toyota Motor Corp | Hydrogen storage device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1221090A (en) * | 1997-12-24 | 1999-06-30 | 液体空气乔治洛德方法利用和研究有限公司 | Device for distributing working gas and installation for supplying working gas that is equipment with such device |
| CN200979071Y (en) * | 2006-11-30 | 2007-11-21 | 马国民 | Mobile high pressure air supply and nitrogen pressurization station |
| CN203927406U (en) * | 2014-06-24 | 2014-11-05 | 上海森松制药设备工程有限公司 | A kind of pipeline switch boards |
| CN205191204U (en) * | 2015-09-17 | 2016-04-27 | 捷锐企业(上海)有限公司 | Two side gas cylinder air feed switched systems |
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| Publication number | Publication date |
|---|---|
| CN105114806A (en) | 2015-12-02 |
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