CN109654375A - A kind of safe feeding device and its air supply method of high pressure combustibility experimental gas - Google Patents
A kind of safe feeding device and its air supply method of high pressure combustibility experimental gas Download PDFInfo
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- CN109654375A CN109654375A CN201910089921.2A CN201910089921A CN109654375A CN 109654375 A CN109654375 A CN 109654375A CN 201910089921 A CN201910089921 A CN 201910089921A CN 109654375 A CN109654375 A CN 109654375A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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Abstract
The invention discloses a kind of safe feeding device of high pressure combustibility experimental gas and its air supply methods.The device includes flammable experimental gas gas cylinder, inert gas gas cylinder, filter, pipeline pressure reducing valve, hand stop valve, pneumatic stopping valve, pressure transmitter, vacuum pump, pressure gauge, vacuum meter, solenoid valve, combustible gas probe, alarm controller for combustible gas base, metallic conduit etc..The device can be used for: 1) transporting imflammable gas safely to experimental facilities；2) gamut adjustment is carried out to gas pressure in use；3) laboratory equipment is persistently supplied or intermittent gas supply；4) to equipment test before airtight test and, experiment rear molding gas cleanup supplied；5) high pressure gas cylinder is safely and conveniently replaced；6) the flammable gas concentration of real-time detection safeguards laboratory safety.The present invention have good air-tightness, high cleanliness, high durability and security reliability, be able to satisfy laboratory equipment is persistently supplied, intermittent gas supply.
Description
Technical field
The present invention relates to flammable experimental gas transport system more particularly to a kind of safety of high pressure combustibility experimental gas
Feeding device and its air supply method.
Background technique
Flammable experimental gas includes hydrogen, acetylene, methane etc., is often supplied to reality by Pipeline transport by gas bomb
Experiment device, instrument etc. use.However, may cause combustible gas leakage in gas transport and improper use, once encounter igniting
Source, easily initiation fire explosion, to cause casualties and property loss.For example, certain Scientific Research in University Laboratory hair in 2015
Raw explosion causes 1 people dead, and preliminary confirmation is since hydrogen improper use causes gas burst.How battle support laboratory is flammable
It is a problem that laboratory safety need to be paid close attention to that the safety of property gas, especially high pressure gas, which is transported and operated,.High pressure can
Combustion property experimental gas to the air-tightness of pipeline, durability, security reliability and it is functional there is high requirement, therefore to using
Reasonable gas supply is carried out when high pressure imflammable gas is as experimental gas and transports the design of pipe-line system.
Current laboratory air supply system is divided into dispersion gas supply and central gas supply by its method of supplying.Dispersion gas supply is by gas
Bottle is individually placed to each Instrumental Analysis Lab, close to instrument gas point；Central gas supply is that all kinds of gas bombs are put together at reality
It tests in outdoor independent gas cylinder, then is transported to the different experiment instrument in each laboratory according to different requirements in the form of pipeline
On device.It is poor to disperse convenient air supplying operation, saving gas but safety；Central gas supply high reliablity, functional but steam line
It is inconvenient for use between gas cylinder to open or close gas source for long waste gas.For the high pressure imflammable gas of independent laboratory
It transports, generallys use distributing air supply method.If the advantages of central gas supply method, can be fused in distributing air supply system,
The delivery safety and functionality of flammable experimental gas will obtain larger raising.Based on this, the present invention combines two kinds of gas supply
The advantages of mode, devises a kind of safe transport system of flammable experimental gas suitable for high pressure gas.
Summary of the invention
The purpose of the present invention is to provide one kind to have good air-tightness, high cleanliness, high durability and security reliability,
Be able to satisfy laboratory equipment is persistently supplied, intermittent gas supply, and can be in use according to operating condition to gas pressure
Carry out the safe feeding device of flammable experimental gas and its air supply method of gamut adjustment.
The technical solution adopted by the present invention are as follows: a kind of safe feeding device of high pressure combustibility experimental gas, the device packet
Include gas cylinders group, supply air line unit, vacuum unit and combustible gas alarm unit；The effect of gas cylinders group and supply air line unit is
Steadily persistently gas supply or intermittent gas supply into laboratory equipment, while can also be to promote after the inspection of air-tightness, experiment before testing
Discharge into device inner exhaust gas provides gas source, and supply air line unit can be according to requirement of experiment in the entire experiment process to gas
Pressure carries out gamut adjustment；Vacuum unit extracts the gas in experimental provision before being used to test；Combustible gas alarm unit is used
In when gas leaks sending sound when concentration reaches warning concentration, light alarm and reminding takes safety measures and linkage exhaust, cutting electricity
Source guarantees the safety of experiment.
Further, the specific structure of the device is as follows: gas cylinders group is mainly by flammable experimental gas gas cylinder, inert gas
Gas cylinder composition.Supply air line unit is mainly by the first, second filter, the first, second, third pipeline pressure reducing valve, and first,
Two, third, the four, the 5th hand stop valves, the first, second, third pneumatic stopping valve, pressure transmitter, control cabinet, metal tube
Road composition；Flammable experimental gas bottle by pipeline and first filter, the first pipeline pressure reducing valve, the first pneumatic stopping valve and with
Its first manual shut-off valve in parallel, pressure transmitter are connected, and inert gas gas cylinder passes through pipeline and the second filter, the second pipe
Road pressure reducing valve, the second pneumatic stopping valve and the second hand stop valve connected in parallel are connected, two pipeline parallel connections；Evacuated tube passes through
4th hand stop valve is controlled, and is connect and is pooled on main pressure piping with combustible gas and inertia feed channel, for discharging dress
Set interior gas；First, second, third pipeline pressure reducing valve is installing 2 pressure gauges with gas cylinder connecting side, main pipeline connecting side, point
The gas pressure in the bottle and manifold pressure variation are not shown；Multiple electromagnetic valve switch are provided in control cabinet, to first, second,
Three pneumatic stopping valves are opened and closed control, cabinet by third hand stop valve, third pipeline pressure reducing valve and metallic conduit with it is lazy
Property gas cylinders connection, pass through inert gas gas cylinder and third pipeline pressure reducing valve and required pressure in control cabinet be provided；Pressure becomes
Sending device for judging equipment when imflammable gas supplies experimental facilities, whether pressure maintaining is successful.Pumped vacuum systems includes pneumatic cuts
Only valve, the vacuum pump with vacuum meter, the vacuum pump with vacuum meter are connected by pipeline with third pneumatic stopping valve, then by
Pipeline is connected on main pressure piping；The opening and closing of third pneumatic stopping valve and vacuum pump is opened by solenoid valve corresponding in control cabinet
Close: third pneumatic stopping valve releases the button, third pneumatic stopping valve close button and vacuum pump are released the button, vacuum pump close by
Button control.Combustible gas alarm unit includes gas detector and gas alarm controller；When gas leakage, alarm movement hair
Audible and visible alarm out exports electric signal；Urgent stop button is installed, laboratory technician, which can press the button, when system alarm makes in control cabinet
Electromagnetism valve events in control cabinet close the pneumatic control valve on supply air line, cut off gas circuit；Gas alarm controller receives simultaneously
Electric signal, linkage exhaust, cutting off the power closes solenoid valve and then cuts off gas circuit.
Further, the course of work of the device is as follows:
1, gas cylinder main valve, the first, second, the 4th hand stop valve, the first, second, third pneumatic cut-off are confirmed before experiment
Valve, the first, second pipeline pressure reducing valve are closed；2, third, the 5th hand stop valve are normally opened, and experiment front opening inert gas gas cylinder is total
Valve confirms that third pipeline pressure reducing valve leads to solenoid valve lateral pressure and reaches its operating pressure by pressure gauge.3, according to requirement of experiment
And purpose, the specific work process of the system are as follows:
(1) it checks sealing device air-tightness and vacuumizes
If experimental provision is in closed state, check device airtightness is realized using this system and is vacuumized.Airtightness
Test operating procedure: confirmation inert gas gas cylinder main valve is opened, and the solenoid valve that the second pneumatic stopping valve is controlled on control cabinet is opened
Switch, manually adjusting the second pipeline pressure reducing valve makes experimental provision pressure maintaining to certain pressure value, closes on control cabinet and controls the second gas
The electromagnetic valve switch of dynamic shut-off valve, test experience device airtightness after airtightness passes through, open the 4th hand stop valve pressure release,
It is then turned off the shut-off valve, closes the second pipeline pressure reducing valve.Vacuum pumping process: confirmation inert gas gas cylinder main valve is opened,
The electromagnetic valve switch of control third pneumatic stopping valve and vacuum pump on control cabinet is opened to start switch, after vacuumizing, according to
The electromagnetic valve switch and vacuum pump shutdown switch of third pneumatic stopping valve on secondary closing control cabinet.
(2) intermittent gas supply is carried out to experimental facilities
Flammable experimental gas gas cylinder main valve is opened, opens the control switch of the first pneumatic stopping valve on control cabinet, manually
Adjusting the first pipeline pressure reducing valve makes main pipeline lateral pressure table data reach experimental pressure；If experimental provision is in closed state, close
The control switch of the first pneumatic stopping valve is closed, whether observation is obviously reduced in pressure transmitter data 3 minutes, if unchanged
It supplies successfully；The control switch of the first pneumatic stopping valve is closed after experiment, closes the first pipeline pressure reducing valve；Then turn on control
The electromagnetic valve switch that the second pneumatic stopping valve is controlled on case processed manually adjusts the second pipeline pressure reducing valve, with inert gas purge pipe
The electromagnetic valve switch that the second pneumatic stopping valve on control cabinet is closed behind road, closes the second pipeline pressure reducing valve, closes flammable experiment
Gas cylinders main valve and inert gas gas cylinder main valve.
(3) stable lasting gas supply is carried out to experimental facilities
Confirm that inert gas gas cylinder main valve is opened, open the electromagnetic valve switch for controlling the second pneumatic stopping valve on control cabinet,
The second pipeline pressure reducing valve is manually adjusted, with the electromagnetic valve switch for closing the second pneumatic stopping valve after inert gas purge pipeline, is closed
It closes after the second pipeline pressure reducing valve, opens flammable experimental gas gas cylinder main valve, open the pneumatically cut-off of control first on control cabinet
The electromagnetic valve switch of valve, manually adjusting the first pipeline pressure reducing valve makes main pipeline lateral pressure table data reach supply gas pressure；Observation pressure
Whether power transmitter data have obvious fluctuation, and the stabilization to experimental facilities, lasting gas supply are realized if unchanged.
(4) gas cylinder safely changes in gas cylinders group
Flammable experimental gas gas cylinder replacement: it checks that flammable experimental gas gas cylinder is in close state, opens the first He
4th hand stop valve adjusts the first pipeline pressure reducing valve for experimental gas flammable in pipeline and drains (the first pipeline pressure reducing valve two
When lateral pressure table is illustrated as 0), the first pipeline pressure reducing valve remains stationary, and more renews gas cylinder；Ensure that experimental facilities is in sealed shape
State need to install the 5th normally opened hand stop valve at main pipeline, close the cut-off at this time if experimental facilities is open type device
Valve is to form loop；Close the 4th hand stop valve；Inert gas gas cylinder main valve is opened, it is pneumatic to open third on control cabinet
The control switch and vacuum pump of shut-off valve, which start switch, to be vacuumized, wait vacuumize after close first manual shut-off valve and
First pipeline pressure reducing valve, then successively close the control switch and vacuum pump shutdown switch of third pneumatic stopping valve on control cabinet；It beats
Open the 5th hand stop valve；Flammable experimental gas gas cylinder main valve is opened, by the first pipeline pressure reducing valve in gas cylinder lateral pressure table
Determine gross pressure in combustibility experimental gas gas cylinder.
The replacement of inert gas gas cylinder: it checks that inert gas gas cylinder is in close state, closes third hand stop valve, open
Second hand stop valve adjusts the second pipeline pressure reducing valve for inert gas in pipeline and drains (the second pipeline pressure reducing valve pressure at both sides
When table is illustrated as 0), the second pipeline pressure reducing valve remains stationary, and more renews gas cylinder；Close the second hand stop valve and the second pipeline
Pressure reducing valve is opened inert gas gas cylinder main valve, is determined in inert gas gas cylinder by the second pipeline pressure reducing valve gas cylinder lateral pressure table
Gross pressure；Third hand stop valve is opened, adjustment third pipeline pressure reducing valve makes to reach its operating pressure towards solenoid valve lateral pressure.
Using the present invention of technical solution as above, safety is had the following beneficial effects:, it is reliably, easy to operate, it saves and uses
Gas, functional.The safety that the flammable safe transport system of experimental gas is used to carry out combustible gas to experimental facilities transports, and can
To carry out gamut adjustment to gas pressure in use, to guarantee that gas meets requirement of experiment in experimental provision；It can also
Satisfaction is persistently supplied to laboratory equipment and intermittent gas supply, provides more selections for experimental design.
Detailed description of the invention
Fig. 1 is a kind of safe feeding device general structure schematic diagram of high pressure combustibility experimental gas of the present invention；
Fig. 2 is control cabinet structural schematic diagram in feeding device；
Fig. 3 is the spontaneous combustion of embodiment mesohigh combustible gas leakage and SHOCK WAVE INDUCED fire trial schematic device.
Transport system the names of the parts table corresponding with number in attached drawing
Specific embodiment
Below in conjunction with Detailed description of the invention embodiments of the present invention.
A kind of safe feeding device of high pressure combustibility experimental gas of the present invention, mainly by flammable experimental gas gas cylinder 1,
Inert gas gas cylinder 2, the first, second filter 3,4, the first, second, third pipeline pressure reducing valve 5,6,19, first, second,
Three, the four, the 5th hand stop valve 7,8,18,15,14, the first, second, third pneumatic stopping valve 9,10,12, pressure transmitter
11, control cabinet 20, metallic conduit composition；Flammable experimental gas bottle 1 is depressurized by pipeline and first filter 3, the first pipeline
Valve 5, the first pneumatic stopping valve 9 and first manual shut-off valve 7 connected in parallel, pressure transmitter 11 are connected, inert gas gas cylinder 2
It is cut manually by pipeline and the second filter 4, the second pipeline pressure reducing valve 6, the second pneumatic stopping valve 10 and connected in parallel second
Only valve 8 is connected, two pipeline parallel connections；Evacuated tube is controlled by the 4th hand stop valve 15, with combustible gas and safe tracheae
Road connection is pooled on main pressure piping 16, for gas in tapping equipment；First, second, third pipeline pressure reducing valve 5,6,19
2 pressure gauges are being installed with gas cylinder connecting side, main pipeline connecting side, are showing the gas pressure in the bottle and manifold pressure variation respectively；
Control cabinet 20 is provided with multiple electromagnetic valve switch, and control, case is opened and closed to the first, second, third pneumatic stopping valve 9,10,12
Body is connect by third hand stop valve 18, third pipeline pressure reducing valve 19 and metallic conduit with inert gas gas cylinder 2, and inertia is passed through
Gas cylinders 2 and third pipeline pressure reducing valve 19 provide required pressure in control cabinet；Pressure transmitter 11 is used for when flammable gas
When body persistently supplies experimental facilities, judging equipment, whether pressure maintaining is successful.Pumped vacuum systems includes third pneumatic stopping valve 12, band
The vacuum pump 13 of vacuum meter, the vacuum pump 13 with vacuum meter are connected by pipeline with third pneumatic stopping valve 12, then by pipe
Road is connected on main pressure piping 16；The opening and closing of third pneumatic stopping valve 12 and vacuum pump 13 is by corresponding electromagnetism in control cabinet 20
Threshold switch: third pneumatic stopping valve 12 releases the button 30, third pneumatic stopping valve, 12 close button 31 and vacuum pump is released the button
24, vacuum pump close button 25 controls.Combustible gas alarm system includes gas detector 21 and gas alarm controller 22；It is flammable
When gas leakage, alarm movement issues audible and visible alarm, exports electric signal；Urgent stop button 32, system report are installed in control cabinet
Laboratory technician, which can press the button, when alert makes electromagnetism valve events in control cabinet, closes the pneumatic control valve on supply air line, cuts off gas
Road；Gas alarm controller 22 receives electric signal simultaneously, and linkage exhaust, cutting off the power closes solenoid valve and then cut off gas circuit.
Further, the course of work of the invention is as follows:
1, flammable experimental gas gas cylinder 1,2 main valve of inert gas gas cylinder are confirmed before experiment, the first, second, the 4th manually
Shut-off valve 7,8,15, the first, second, third pneumatic stopping valve 9,10,12, the first, second pipeline pressure reducing valve 5,6 are closed；2,
Three, the 5th hand stop valve 18,14 is normally opened, tests 2 main valve of front opening inert gas gas cylinder, confirms third pipeline by pressure gauge
Pressure reducing valve 19 leads to 20 lateral pressure of solenoid valve and reaches its operating pressure；
(1) it checks sealing device air-tightness and vacuumizes
If experimental provision is in closed state, check device airtightness is realized using the present apparatus and is vacuumized.Airtightness
Test operating procedure: confirmation 2 main valve of inert gas gas cylinder is opened, press the unlatching of the second pneumatic stopping valve 10 on control cabinet 20 by
Button 28, manually adjusting the second pipeline pressure reducing valve 6 makes experimental provision pressure maintaining to certain pressure value, and it is pneumatic to press on control cabinet 20 second
The close button 29 of shut-off valve 10, test experience device airtightness after airtightness passes through, are opened the 4th hand stop valve 15 and are let out
Pressure is then turned off the shut-off valve, closes the second pipeline pressure reducing valve 6.Vacuum pumping process: confirmation 2 main valve of inert gas gas cylinder
Open, press third pneumatic stopping valve 12 on control cabinet 20 release the button 30 and vacuum pump release the button 24, wait vacuumize knot
Shu Hou successively presses the close button 31 and vacuum pump close button 25 of third pneumatic stopping valve 12 on control cabinet.
(2) intermittent gas supply is carried out to experimental facilities
Flammable 1 main valve of experimental gas gas cylinder is opened, releasing the button for the first pneumatic stopping valve 9 on control cabinet 20 is pressed
26, manually adjusting the first pipeline pressure reducing valve 5 makes main pipeline lateral pressure table data reach experimental pressure；If experimental provision is in closing
State presses the close button 27 of the first pneumatic stopping valve 9, and whether observation has in 11 data of pressure transmitter 3 minutes obviously subtracts
It is small, success is supplied if unchanged；The close button 27 of the first pneumatic stopping valve 9 is pressed after experiment, closes the first pipeline
Pressure reducing valve 5；That then presses the second pneumatic stopping valve 10 on control cabinet 20 releases the button 28, manually adjusts the second pipeline pressure reducing valve
6, with the close button 29 for pressing the second pneumatic stopping valve 10 on control cabinet 20 after inert gas purge pipeline, close the second pipeline
Pressure reducing valve 6 closes flammable 1 main valve of experimental gas gas cylinder and 2 main valve of inert gas gas cylinder.
(3) stable lasting gas supply is carried out to experimental facilities
Confirm that 2 main valve of inert gas gas cylinder is opened, that presses the second pneumatic stopping valve 10 on control cabinet 20 releases the button 28,
The second pipeline pressure reducing valve 6 is manually adjusted, with the close button 29 for pressing the second pneumatic stopping valve 10 after inert gas purge pipeline,
It closes after the second pipeline pressure reducing valve 6, opens flammable 1 main valve of experimental gas gas cylinder, press on control cabinet 20 first pneumatic section
Only valve 9 releases the button 26, and manually adjusting the first pipeline pressure reducing valve 5 makes main pipeline lateral pressure table data reach supply gas pressure；It sees
It examines whether 11 data of pressure transmitter have obvious fluctuation, the stabilization to experimental facilities, lasting gas supply is realized if unchanged.
(4) gas cylinder safely changes in transport system
Flammable experimental gas gas cylinder replacement: it checks that flammable experimental gas gas cylinder 1 is in close state, opens the first He
4th hand stop valve 7,15 adjusts the first pipeline pressure reducing valve 5 for experimental gas flammable in pipeline and drains (the first pipeline decompression
When valve pressure at both sides table is illustrated as 0), the first pipeline pressure reducing valve 5 remains stationary, and more renews gas cylinder；Ensure that experimental facilities is in
Air-tight state need to install the 5th normally opened hand stop valve 14 at main pipeline, close at this time if experimental facilities is open type device
The shut-off valve is closed to form loop；Close the 4th hand stop valve 15；2 main valve of inert gas gas cylinder is opened, control is pressed
On case 20 third pneumatic stopping valve 12 release the button 30 and vacuum pump 13 release the button and 24 vacuumized, to the end of vacuumizing
First manual shut-off valve 7 and the first pipeline pressure reducing valve 5 are closed afterwards, then successively press third pneumatic stopping valve 12 on control cabinet 20
13 close button 25 of close button 31 and vacuum pump；Open the 5th hand stop valve 14；It is total to open flammable experimental gas gas cylinder 1
Valve determines gross pressure in flammable experimental gas gas cylinder 1 in gas cylinder lateral pressure table by the first pipeline pressure reducing valve 5.
The replacement of inert gas gas cylinder: checking that inert gas gas cylinder 2 is in close state, close third hand stop valve 18,
The second hand stop valve 8 is opened, the second pipeline pressure reducing valve 6 is adjusted by inert gas in pipeline and drains (i.e. the second pipeline pressure reducing valve
When pressure at both sides table is illustrated as 0), the second pipeline pressure reducing valve 6 remains stationary, and more renews gas cylinder；Close the second hand stop valve 8
With the second pipeline pressure reducing valve 6,2 main valve of inert gas gas cylinder is opened, is determined by 6 gas cylinder lateral pressure table of the second pipeline pressure reducing valve lazy
Gross pressure in property gas cylinders 2；Third hand stop valve 18 is opened, adjustment third pipeline pressure reducing valve 19 makes to lead to solenoid valve side pressure
Power reaches its operating pressure.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.
As shown in figure 3, experimental facilities is the spontaneous combustion of high pressure combustible gas leakage and SHOCK WAVE INDUCED fire trial device.This is sent out
Bright to be connect by main pipeline 16 with the device, flammable experimental gas is hydrogen, and inert gas is nitrogen.Experimental provision it is brief
The course of work are as follows: hydrogen is delivered to high pressure storage tank 33 using the present invention, hydrogen is filled to certain pressure, simulates the storage of hydrogen high pressure
It deposits；Rupture disk clamper 36 is connected with high pressure storage tank 33, quick-fried when pressure of storage tank is higher than the receiving of rupture disk 35 pressure in clamper
Fragmentation rupture, hydrogen are released in protective housing 42 by downstream line 39.Pressure and auto-ignition are passed by pressure in downstream line
Sensor 37 and photodiode 38 measure, and protective housing flame structure is measured by High Speed System 41, transfers data to data and adopt
Collect in instrument 40.The device is closed-type device, without installing the 5th hand stop valve 14.It is of the invention in conjunction with the experimental facilities
The course of work is as follows:
Before step 1, experiment and after confirm flammable experimental gas gas cylinder 1,2 main valve of inert gas gas cylinder, first, the
Two, the 4th hand stop valve 7,8,15, the first, second, third pneumatic stopping valve 9,10,12, the first, second pipeline pressure reducing valve 5,
6 close；
Step 2, third hand stop valve 18 are normally opened, test 2 main valve of front opening inert gas gas cylinder, are confirmed by pressure gauge
Third pipeline pressure reducing valve 19 leads to solenoid valve lateral pressure and reaches its operating pressure 5bar；
Step 3, airtightness test: rupture disk 35 after the installation is completed, opens 2 main valve of inert gas gas cylinder, presses control cabinet 20
Upper second pneumatic stopping valve 10 releases the button 28, and adjusting the second pipeline pressure reducing valve 6 makes 33 pressure maintaining of high pressure chest to certain pressure value,
The close button 29 of the second pneumatic stopping valve 10 on control cabinet 20 is pressed, test experience device airtightness after airtightness passes through, is beaten
15 pressure release of the 4th hand stop valve is opened, the shut-off valve is then turned off, closes the second pipeline pressure reducing valve 6；
Step 4 vacuumizes: confirmation 2 main valve of inert gas gas cylinder is opened, and third pneumatic stopping valve 12 on control cabinet 20 is pressed
Release the button 30 and vacuum pump release the button 24, after vacuumizing, successively press third pneumatic stopping valve on control cabinet
12 close button 31 and vacuum pump close button 25；
Step 5 supplies for experimental provision intermittence: opening flammable 1 main valve of experimental gas bottle, presses on control cabinet 20 the
One pneumatic stopping valve 9 releases the button 26, adjusts after the first pipeline pressure reducing valve 5 ruptures rupture disk 35, presses the first gas immediately
The close button 27 of dynamic shut-off valve 9.That then presses the second pneumatic stopping valve 10 on control cabinet 20 releases the button 28, adjusts second
Pipeline pressure reducing valve 6 closes the with the close button 29 for pressing the second pneumatic stopping valve 10 on control cabinet 20 behind nitrogen sparge tube road
One, the second pipeline pressure reducing valve 5,6 changes rupture disk 35 and carries out next group of experiment.
Step 6 replaces flammable experimental gas bottle: checking that flammable 1 main valve of experimental gas bottle is in close state, opens
The first, the 4th hand stop valve 7,15 adjusts the first pipeline pressure reducing valve 5 for hydrogen in pipeline and drains (i.e. 5 two sides of pipeline pressure reducing valve
When pressure gauge is illustrated as 0), the first pipeline pressure reducing valve 5 remains stationary, and more renews gas cylinder.Rupture disk 35 is loaded onto, the 4th hand is closed
Dynamic shut-off valve 15, opens 2 main valve of inert gas gas cylinder, presses 30 Hes of releasing the button of third pneumatic stopping valve 12 on control cabinet 20
Vacuum pump 13 releases the button 24, wait vacuumize after close first manual shut-off valve 7 and pipeline pressure reducing valve 5, then successively press
13 close button 25 of the close button 31 of third pneumatic stopping valve 12 and vacuum pump on control cabinet 20.Open flammable experimental gas
1 main valve of bottle determines gross pressure in flammable experimental gas bottle by the flammable experimental gas bottle lateral pressure table of pipeline pressure reducing valve 5.
Step 7, replacement inert gas gas cylinder: it checks that 2 main valve of inert gas gas cylinder is in close state, it is manual to close third
Shut-off valve 18 opens the second hand stop valve 8, adjusts the second pipeline pressure reducing valve 6 and nitrogen in pipeline drains to (i.e. the second pipeline subtracts
When 6 pressure at both sides table of pressure valve is illustrated as 0), more renew gas cylinder.The second hand stop valve 8 and the second pipeline pressure reducing valve 6 are closed,
2 main valve of inert gas gas cylinder is opened, stagnation pressure in inert gas gas cylinder 2 is determined by 6 gas cylinder lateral pressure table of the second pipeline pressure reducing valve
Power.Third hand stop valve 18 is opened, adjustment third pipeline pressure reducing valve 19 makes to lead to solenoid valve lateral pressure to be about 5bar.
The foregoing description of the disclosed embodiments makes professional and technical personnel in the field can be realized or use the application.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the application.Therefore, the application
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (3)
1. a kind of safe feeding device of high pressure combustibility experimental gas, it is characterised in that: the device includes gas cylinders group, air supply pipe
Road unit, vacuum unit and combustible gas alarm unit；The effect of gas cylinders group and supply air line unit is into laboratory equipment
Steadily lasting gas supply or intermittent gas supply, while can be also promote device inner exhaust gas after the inspection, experiment of air-tightness before experiment
Discharge provides gas source, and supply air line unit can carry out gamut to gas pressure in the entire experiment process according to requirement of experiment
Adjustment；Vacuum unit extracts the gas in experimental provision before being used to test；Combustible gas alarm unit is used for when gas leakage is dense
Degree sending sound when reaching warning concentration, light alarm and reminding takes safety measures and linkage exhaust, cuts off the power, and guarantees the peace of experiment
Quan Xing.
2. the safe feeding device of high pressure combustibility experimental gas according to claim 1, which is characterized in that the device
Specific structure is as follows: gas cylinders group is mainly by flammable experimental gas gas cylinder (1), inert gas gas cylinder (2) composition；Supply pipe unit
Mainly by the first, second filter (3,4), the first, second, third pipeline pressure reducing valve (5,6,19), first, second, third,
Four, the 5th hand stop valve (7,8,18,15,14), the first, second, third pneumatic stopping valve (9,10,12), pressure transmitter
(11), control cabinet (20), metallic conduit composition；Flammable experimental gas bottle (1) passes through pipeline and first filter (3), first
Pipeline pressure reducing valve (5), the first pneumatic stopping valve (9) and first manual shut-off valve (7) connected in parallel, pressure transmitter (11) phase
Even, inert gas gas cylinder (2) passes through pipeline and the second filter (4), the second pipeline pressure reducing valve (6), the second pneumatic stopping valve
(10) and the second hand stop valve (8) connected in parallel is connected, two pipeline parallel connections；Evacuated tube passes through the 4th hand stop valve
(15) it is controlled, connect and be pooled on main pressure piping (16) with combustible gas and inertia feed channel, for gas in tapping equipment
Body；First, second, third pipeline pressure reducing valve (5,6,19) is installing 2 pressure gauges with gas cylinder connecting side, main pipeline connecting side,
The gas pressure in the bottle and manifold pressure variation are shown respectively；Control cabinet (20) is provided with multiple electromagnetic valve switch, to first,
Two, control is opened and closed in third pneumatic stopping valve (9,10,12), and cabinet is subtracted by third hand stop valve (18), third pipeline
Pressure valve (19) and metallic conduit are connect with inert gas gas cylinder (2), pass through inert gas gas cylinder (2) and third pipeline pressure reducing valve
(19) required pressure in control cabinet is provided；Pressure transmitter (11) is used for when imflammable gas persistently supplies experimental facilities,
Judging equipment, whether pressure maintaining is successful；Pumped vacuum systems includes third pneumatic stopping valve (12), the vacuum pump (13) with vacuum meter,
Vacuum pump (13) with vacuum meter is connected by pipeline with third pneumatic stopping valve (12), then is connected to main high pressure by pipeline
On pipeline (16)；The opening and closing of third pneumatic stopping valve (12) and vacuum pump (13) is opened by corresponding solenoid valve in control cabinet (20)
Close: third pneumatic stopping valve (12) is released the button (30), third pneumatic stopping valve (12) close button (31) and vacuum pump are opened
Button (24), vacuum pump close button (25) control；Combustible gas alarm unit includes gas detector (21) and gas alarm control
Device (22) processed；When gas leakage, alarm movement issues audible and visible alarm, exports electric signal；Urgent stop is installed in control cabinet
Button (32), laboratory technician, which can press the button, when system alarm makes electromagnetism valve events in control cabinet, closes the gas on supply air line
Dynamic control valve, cuts off gas circuit；Gas alarm controller (22) receives electric signal simultaneously, and linkage exhaust, cutting off the power makes solenoid valve
It closes and then cuts off gas circuit.
3. a kind of air supply method of the safe feeding device of high pressure combustibility experimental gas, utilizes height described in as claimed in claim 1 or 22
Press the safe feeding device of flammable experimental gas, which is characterized in that the air supply method includes the following steps:
3.1, confirmation gas cylinder main valve before experiment, the first, second, the 4th hand stop valve, the first, second, third pneumatic stopping valve,
First, second pipeline pressure reducing valve is closed；3.2, third, the 5th hand stop valve are normally opened, and experiment front opening inert gas gas cylinder is total
Valve confirms that third pipeline pressure reducing valve leads to solenoid valve lateral pressure and reaches its operating pressure by pressure gauge；3.3, it is wanted according to experiment
Summation purpose, the specific work process of the device are as follows:
(1) it checks sealing device air-tightness and vacuumizes
If experimental provision is in closed state, check device airtightness is realized using this system and is vacuumized；Airtightness test
Operating process: confirmation inert gas gas cylinder main valve is opened, and the electromagnetic valve switch that the second pneumatic stopping valve is controlled on control cabinet is opened,
Manually adjusting the second pipeline pressure reducing valve makes experimental provision pressure maintaining to certain pressure value, closes the pneumatically cut-off of control second on control cabinet
The electromagnetic valve switch of valve, test experience device airtightness after airtightness passes through, are opened the 4th hand stop valve pressure release, are then closed
The shut-off valve is closed, the second pipeline pressure reducing valve is closed；Vacuum pumping process: confirmation inert gas gas cylinder main valve is opened, and control is opened
The electromagnetic valve switch of third pneumatic stopping valve is controlled on case processed and vacuum pump starts switch, and after vacuumizing, is successively closed
The electromagnetic valve switch of third pneumatic stopping valve and vacuum pump shutdown switch on control cabinet；
(2) intermittent gas supply is carried out to experimental facilities
Flammable experimental gas gas cylinder main valve is opened, the control switch of the first pneumatic stopping valve on control cabinet is opened, manually adjusts
First pipeline pressure reducing valve makes main pipeline lateral pressure table data reach experimental pressure；If experimental provision is in closed state, the is closed
Whether the control switch of one pneumatic stopping valve, observation are obviously reduced in pressure transmitter data 3 minutes, supply if unchanged
Success；The control switch of the first pneumatic stopping valve is closed after experiment, closes the first pipeline pressure reducing valve；Then turn on control cabinet
The electromagnetic valve switch of the second pneumatic stopping valve of upper control, manually adjusts the second pipeline pressure reducing valve, after inert gas purge pipeline
The electromagnetic valve switch of the second pneumatic stopping valve on control cabinet is closed, the second pipeline pressure reducing valve is closed, closes flammable experimental gas
Gas cylinder main valve and inert gas gas cylinder main valve；
(3) stable lasting gas supply is carried out to experimental facilities
Confirm that inert gas gas cylinder main valve is opened, opens the electromagnetic valve switch for controlling the second pneumatic stopping valve on control cabinet, manually
The second pipeline pressure reducing valve is adjusted, with the electromagnetic valve switch for closing the second pneumatic stopping valve after inert gas purge pipeline, closes the
After two pipeline pressure reducing valves, flammable experimental gas gas cylinder main valve is opened, opens and controls the first pneumatic stopping valve on control cabinet
Electromagnetic valve switch, manually adjusting the first pipeline pressure reducing valve makes main pipeline lateral pressure table data reach supply gas pressure；Pressure is observed to become
It send whether device data have obvious fluctuation, the stabilization to experimental facilities, lasting gas supply is realized if unchanged；
(4) gas cylinder safely changes in transport system
Flammable experimental gas gas cylinder replacement: it checks that flammable experimental gas gas cylinder is in close state, opens first and the 4th
Hand stop valve adjusts the first pipeline pressure reducing valve for experimental gas flammable in pipeline and drains (i.e. the first pipeline pressure reducing valve two sides
When pressure gauge is illustrated as 0), the first pipeline pressure reducing valve remains stationary, and more renews gas cylinder；Ensure that experimental facilities is in sealed shape
State need to install the 5th normally opened hand stop valve at main pipeline, close the cut-off at this time if experimental facilities is open type device
Valve is to form loop；Close the 4th hand stop valve；Inert gas gas cylinder main valve is opened, it is pneumatic to open third on control cabinet
The control switch and vacuum pump of shut-off valve, which start switch, to be vacuumized, wait vacuumize after close first manual shut-off valve and
First pipeline pressure reducing valve, then successively close the control switch and vacuum pump shutdown switch of third pneumatic stopping valve on control cabinet；It beats
Open the 5th hand stop valve；Flammable experimental gas gas cylinder main valve is opened, by the first pipeline pressure reducing valve in gas cylinder lateral pressure table
Determine gross pressure in combustibility experimental gas gas cylinder；
The replacement of inert gas gas cylinder: it checks that inert gas gas cylinder is in close state, closes third hand stop valve, open second
Hand stop valve adjusts the second pipeline pressure reducing valve for inert gas in pipeline and drains (i.e. the second pipeline pressure reducing valve pressure at both sides table
When being illustrated as 0), the second pipeline pressure reducing valve remains stationary, and more renews gas cylinder；It closes the second hand stop valve and the second pipeline subtracts
Pressure valve opens inert gas gas cylinder main valve, is determined by the second pipeline pressure reducing valve gas cylinder lateral pressure table total in inert gas gas cylinder
Pressure；Third hand stop valve is opened, adjustment third pipeline pressure reducing valve makes to reach its operating pressure towards solenoid valve lateral pressure.
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| CN111578148A (en) * | 2020-05-13 | 2020-08-25 | 长沙中联重科环境产业有限公司 | Pneumatic system leakage alarming and detecting system and method |
| CN112344213A (en) * | 2020-12-08 | 2021-02-09 | 岳阳凯美特电子特种稀有气体有限公司 | Device and method for recycling residual gas in gas cylinder |
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| CN112985741A (en) * | 2021-02-07 | 2021-06-18 | 中国空气动力研究与发展中心超高速空气动力研究所 | Piston type wind tunnel special gas inflation method utilizing compressed air power |
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| CN113819814A (en) * | 2020-06-18 | 2021-12-21 | 北京机械设备研究所 | Electromagnetic switch gas control method suitable for underwater projectile |
| CN113944876A (en) * | 2021-10-31 | 2022-01-18 | 东风商用车有限公司 | Multi-gas-cylinder gas supply system |
| CN116045204A (en) * | 2023-01-03 | 2023-05-02 | 北京天玛智控科技股份有限公司 | Vehicle-mounted hydrogen storage system and fault detection method thereof |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB447030A (en) * | 1934-08-03 | 1935-02-04 | P A C I Sa Pour L Expl Des Bre | Improvements in methods and installations for the transportation and distribution of gas |
| US4051886A (en) * | 1973-08-27 | 1977-10-04 | Liquid Carbonic Canada Ltd. | Saturated liquid/vapor generating and dispensing |
| CH623912A5 (en) * | 1977-02-14 | 1981-06-30 | Mannesmann Ag | Monitoring device at the supply line of an oil-fed unit |
| DE4317395A1 (en) * | 1993-05-25 | 1994-12-01 | Linde Ag | Method and device for supplying consumers with odorized gas |
| JP2002062177A (en) * | 2000-08-21 | 2002-02-28 | Matsushita Electric Ind Co Ltd | Gas cutoff device |
| CN202834760U (en) * | 2012-10-17 | 2013-03-27 | 四川普瑞净化设备有限公司 | Full-automatic bus-bar for inert gases |
| CN103454396A (en) * | 2013-09-06 | 2013-12-18 | 中国科学技术大学 | Test device for high-pressure combustible gas leakage spontaneous combustion and shock wave induction ignition |
| CN203363670U (en) * | 2013-05-24 | 2013-12-25 | 上海卫星装备研究所 | Automatic monitoring alarm nitrogen blowing device |
| CN203465230U (en) * | 2013-09-23 | 2014-03-05 | 中国科学技术大学 | Test device for flame propagation and inhibition in explosion process of combustible gas and air premixed gas |
| CN103727140A (en) * | 2012-10-11 | 2014-04-16 | 中国核动力研究设计院 | Non-active pressure-boosting pressure-stabilizing system capable of alleviating cavitation abrasion of water lubricated main-pump bearing |
| CN203836598U (en) * | 2014-05-09 | 2014-09-17 | 沈阳洪生气体有限公司 | Safety hydrogen supply device |
| CN104456080A (en) * | 2014-11-14 | 2015-03-25 | 武汉钢铁(集团)公司 | Laboratory continuous air supplying system |
| CN206286730U (en) * | 2016-12-16 | 2017-06-30 | 上海精典电子有限公司 | A kind of uninterrupted blowing of stainless steel pipes welding supplies system |
| CN206478448U (en) * | 2016-12-14 | 2017-09-08 | 四川梅塞尔气体产品有限公司 | A kind of hydrogen supply system |
| CN206556684U (en) * | 2016-12-07 | 2017-10-13 | 重庆梅安森科技股份有限公司 | A kind of combustible gas sensor detection intelligent gas-supplying system |
| CN107314243A (en) * | 2017-06-23 | 2017-11-03 | 中国科学院植物研究所 | CO is simulated for open top type air chamber2The uninterrupted supply and distant early warning facility of multiplication |
| CN209893115U (en) * | 2019-01-30 | 2020-01-03 | 中国科学技术大学 | Safe conveying device for high-pressure combustible experimental gas |
-
2019
- 2019-01-30 CN CN201910089921.2A patent/CN109654375A/en active Pending
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB447030A (en) * | 1934-08-03 | 1935-02-04 | P A C I Sa Pour L Expl Des Bre | Improvements in methods and installations for the transportation and distribution of gas |
| US4051886A (en) * | 1973-08-27 | 1977-10-04 | Liquid Carbonic Canada Ltd. | Saturated liquid/vapor generating and dispensing |
| CH623912A5 (en) * | 1977-02-14 | 1981-06-30 | Mannesmann Ag | Monitoring device at the supply line of an oil-fed unit |
| DE4317395A1 (en) * | 1993-05-25 | 1994-12-01 | Linde Ag | Method and device for supplying consumers with odorized gas |
| JP2002062177A (en) * | 2000-08-21 | 2002-02-28 | Matsushita Electric Ind Co Ltd | Gas cutoff device |
| CN103727140A (en) * | 2012-10-11 | 2014-04-16 | 中国核动力研究设计院 | Non-active pressure-boosting pressure-stabilizing system capable of alleviating cavitation abrasion of water lubricated main-pump bearing |
| CN202834760U (en) * | 2012-10-17 | 2013-03-27 | 四川普瑞净化设备有限公司 | Full-automatic bus-bar for inert gases |
| CN203363670U (en) * | 2013-05-24 | 2013-12-25 | 上海卫星装备研究所 | Automatic monitoring alarm nitrogen blowing device |
| CN103454396A (en) * | 2013-09-06 | 2013-12-18 | 中国科学技术大学 | Test device for high-pressure combustible gas leakage spontaneous combustion and shock wave induction ignition |
| CN203465230U (en) * | 2013-09-23 | 2014-03-05 | 中国科学技术大学 | Test device for flame propagation and inhibition in explosion process of combustible gas and air premixed gas |
| CN203836598U (en) * | 2014-05-09 | 2014-09-17 | 沈阳洪生气体有限公司 | Safety hydrogen supply device |
| CN104456080A (en) * | 2014-11-14 | 2015-03-25 | 武汉钢铁(集团)公司 | Laboratory continuous air supplying system |
| CN206556684U (en) * | 2016-12-07 | 2017-10-13 | 重庆梅安森科技股份有限公司 | A kind of combustible gas sensor detection intelligent gas-supplying system |
| CN206478448U (en) * | 2016-12-14 | 2017-09-08 | 四川梅塞尔气体产品有限公司 | A kind of hydrogen supply system |
| CN206286730U (en) * | 2016-12-16 | 2017-06-30 | 上海精典电子有限公司 | A kind of uninterrupted blowing of stainless steel pipes welding supplies system |
| CN107314243A (en) * | 2017-06-23 | 2017-11-03 | 中国科学院植物研究所 | CO is simulated for open top type air chamber2The uninterrupted supply and distant early warning facility of multiplication |
| CN209893115U (en) * | 2019-01-30 | 2020-01-03 | 中国科学技术大学 | Safe conveying device for high-pressure combustible experimental gas |
Non-Patent Citations (5)
| Title |
|---|
| "《油气储运》2013年第32卷第1～12期目次", 油气储运, no. 12 * |
| 张海琴;李萍;袁进平;刘卫东;乔木;: "安全稳定供气中的调峰问题探讨", 天然气工业, no. 02 * |
| 段强领: "高压氢气泄漏自燃机理及其火焰传播特性实验研究", 工程科技Ⅰ辑, no. 09 * |
| 简明学: "《现代船舶消防》", vol. 1, 广西科学技术出版社, pages: 2 * |
| 陶睿;: "浅析调压供气系统不间断性设计", 城市燃气, no. 10 * |
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|---|---|---|---|---|
| CN110030495A (en) * | 2019-04-23 | 2019-07-19 | 山东京博众诚清洁能源有限公司 | A kind of liquid oxygen entrucking security system |
| CN111578148A (en) * | 2020-05-13 | 2020-08-25 | 长沙中联重科环境产业有限公司 | Pneumatic system leakage alarming and detecting system and method |
| CN111578148B (en) * | 2020-05-13 | 2021-08-24 | 长沙中联重科环境产业有限公司 | Pneumatic system leakage alarming and detecting system and method |
| CN113819814A (en) * | 2020-06-18 | 2021-12-21 | 北京机械设备研究所 | Electromagnetic switch gas control method suitable for underwater projectile |
| CN112572846A (en) * | 2020-11-23 | 2021-03-30 | 蓝箭航天技术有限公司 | Ignition device test method and system |
| CN112344213A (en) * | 2020-12-08 | 2021-02-09 | 岳阳凯美特电子特种稀有气体有限公司 | Device and method for recycling residual gas in gas cylinder |
| CN112985741A (en) * | 2021-02-07 | 2021-06-18 | 中国空气动力研究与发展中心超高速空气动力研究所 | Piston type wind tunnel special gas inflation method utilizing compressed air power |
| CN112985741B (en) * | 2021-02-07 | 2022-05-10 | 中国空气动力研究与发展中心超高速空气动力研究所 | Piston type wind tunnel special gas inflation method utilizing compressed air power |
| CN113188054A (en) * | 2021-05-19 | 2021-07-30 | 华东师范大学 | Secondary gas taking device for hazardous gas |
| CN113944876A (en) * | 2021-10-31 | 2022-01-18 | 东风商用车有限公司 | Multi-gas-cylinder gas supply system |
| CN116045204A (en) * | 2023-01-03 | 2023-05-02 | 北京天玛智控科技股份有限公司 | Vehicle-mounted hydrogen storage system and fault detection method thereof |
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