CN106323609A - Superheated liquid over-pressure relief experiment device - Google Patents
Superheated liquid over-pressure relief experiment device Download PDFInfo
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- CN106323609A CN106323609A CN201610642495.7A CN201610642495A CN106323609A CN 106323609 A CN106323609 A CN 106323609A CN 201610642495 A CN201610642495 A CN 201610642495A CN 106323609 A CN106323609 A CN 106323609A
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- pressure
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- ball valve
- pressure vessel
- rupture disk
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
Abstract
The invention relates to a superheated liquid over-pressure relief experiment device comprising a pressure container and a computer control system. A heating electrode is installed inside the pressure container; and an injection ball valve and an emptying ball valve are arranged at a lower sealing head of the pressure container. A Temperature sensor, a pressure transmitter, a thermometer, a pressure gauge, an ultrasonic level gauge, and a magnetic float level meter are installed at the pressure container. Three adapters are arranged at an upper sealing head of the pressure container; the central adapter is a solenoid valve adapter; and each of the other two adapter at the two sides is branched to form four branch adapters; the branch adapters at one side are provided with four groups of pressure relief ball value and safety valve combined units; and the branch adapters at the other side are provided with four groups of ball valve and explosion plate combination units; and a solenoid valve is installed at the solenoid valve adapter. The solenoid valve, the temperature sensor, the pressure transmitter, and the ultrasonic level gauge are connected with corresponding controllers; and all controllers are connected with the computer control system. According to the invention, the experiment staff can complete testing in a safety range; and the security is high.
Description
Technical field
The present invention relates to for studying BLEVE phenomenon and relief valve, the safety relief device such as rupture disk work phenomenon and
The experimental provision of mechanism, is specifically related to superheated liquid overpressure relief experimental provision.
Background technology
Pressure vessel is widely used in each departments industrial such as petrochemical industry, bio-pharmaceuticals, food processing；With
Time, such as LPG cyoinders equal pressure container is also widely used in resident living.But, As time goes on, it is on active service
In the pressure vessel of the industrial production sectors such as oil, chemical industry, heating power, combustion gas because there is etching problem, become serious safety
Hidden danger, constitutes safely serious threat to national economy and the people's lives and property.The in-service pressure containing superheated liquid holds
There is the defect such as spot corrosion, aperture due to reasons such as corrosion in device, can produce superpressure leakage, cause boiling liquid expanding-vapor explosion
(BLEVE Boiling Liquid Expanding Vapor Explosion) phenomenon, this phenomenon is that a kind of hazardness is very big
Physical property blast, this kind of accident once occurs, and easily causes a large amount of injures and deaths of personnel and tremendous economic loss.
Meanwhile, the many of substantial amounts of dangerous liquefied gas, such as petrochemical process is stored in our city and periphery
Pressure vessel, particularly large-scale storage tank, the dangerous liquid gas being generally used for various productive life filled, they generally make
High by rate, storage capacity is big.Store the storage tank of these liquefied gas and have a potential danger that BLEVE accident occurs, once producing or
In using, these containers there occurs inefficacy due to a variety of causes, and the environment inside and outside container drastically changes so that liquid gas is rapidly
Boiling is possible to promote BLEVE accident.Such as fill the transportation tank car of dangerous liquefied gas (LPG, LNG) fuel, by
In frequently using in recent decades, it is exactly one of the focus of safety project construction to the research of tank car BLEVE accident.
Summary of the invention
It is an object of the present invention to provide superheated liquid overpressure relief experimental provision, this superheated liquid overpressure relief is real
Experiment device is used for solving can not effectively prevent at present inservice pressure vessel BLEVE accident, also solves in-service container because letting out simultaneously
The problem leaked and BLEVE phenomenon occurs.
The technical solution adopted for the present invention to solve the technical problems is: this superheated liquid overpressure relief experimental provision bag
Including pressure vessel, operating board, data collecting system, computer control system, pressure vessel is internally installed to be had and adds thermode, pressure
It is provided with injection ball valve and emptying ball valve, ultrasonic level gage and magnetic float liquidlevel meter adapter at container low head to be symmetricly set on
Pressure vessel both sides；Pressure vessel top is provided with the temperature sensor of data collecting system, pressure transmitter, thermometer, pressure
Power table, pressure vessel bottom is also provided with the temperature sensor of data collecting system, pressure transmitter, thermometer, Pressure gauge；Pressure
Force container upper cover is provided with three adapters, and the adapter at center is electromagnetic valve adapter, and each adapter of both sides respectively branches out four
Branch tube, side branch tube installs four groups of pressure relief ball valves and relief valve combination unit, and opposite side branch tube installs four groups
Explosion ball valve and rupture disk combination unit, electromagnetic valve adapter is installed electromagnetic valve valve seat, electromagnetic valve valve seat is horizontally outward extended
Four connecting rods are connected with electromagnetic valve valve head, are driven by drive shaft between electromagnetic valve valve head and valve seat；It is provided with clear in operating board
Water pump and water tank, water tank connects clarified water pump, and clarified water pump connects the injection ball valve of pressure vessel；Temperature sensor, pressure transmitter,
Ultrasonic level gage is in being all connected to data acquisition device by data transmission cable on corresponding controller, and electromagnetic valve valve head picks out
Data transmission cable is received in the corresponding controllers in data acquisition device；Each controller connects computer control system, adds thermoelectricity
Pole connects temperature controller, and clarified water pump is connected with computer control system.
In such scheme, the side of pressure vessel installation rupture disk combination unit is provided with video camera, and video camera is arranged on to be taken the photograph
On camera support, video camera and rupture disk combination unit substantially on the sustained height on ground, with by high-speed camera to reality
The process of testing records and cuts into slices.
The temperature sensor of the data collecting system on pressure vessel top, pressure transmitter, thermometer, pressure in such scheme
Power table mounting means is: temperature sensor, pressure transmitter are arranged on pressure vessel side, and thermometer, Pressure gauge are symmetrically installed
At the opposite side of pressure vessel, the adapter installing Pressure gauge and thermometer all has 30 ° of angles with pressure vessel cross-sectional direction；Pressure
The temperature sensor of the data collecting system of force container bottom, pressure transmitter, thermometer, Pressure gauge mounting means be: temperature
Sensor, pressure transmitter are arranged on pressure vessel side, and thermometer, Pressure gauge are symmetrically mounted on the opposite side of pressure vessel,
The adapter installing Pressure gauge and thermometer the most also has 30 ° of angles with pressure vessel cross-sectional direction.
Ultrasonic level gage and axis and pressure transmitter and the temperature sensing of magnetic float liquidlevel meter adapter in such scheme
The axis of device adapter is 90 ° of angles.
In such scheme, the connecting rod between electromagnetic valve valve head and valve seat is high-strength steel six prism connecting rod, and connecting rod is long
20cm。
In such scheme, pressure transmitter is connected by the hollow high strength steel pipe of helical structure with pressure vessel, makes pressure
Power transmitter is placed in its position that can normally work, and its helical structure can increasing heat radiation area, it is ensured that pressure transmitter
Can not the heat radiation impact on receptor surface, normal work also carries out data acquisition accurately.
Such scheme borehole blasting sheet combination unit is made up of rupture disk clamper and rupture disk.
The method that in such scheme, superheated liquid overpressure relief experimental provision carries out BLEVE experiment:
(1) water tank fills water；
(2) close the back-water valve (BWV) at clarified water pump, open and below pressure vessel, inject ball valve and ultrasonic level gage front end ball valve；
(3) open computer input experiment member, then click on " experimental implementation interface "；
(4) click on clarified water pump and " start " button, observe the liquid level that ultrasonic level gage is current, make pressure vessel liquid level reach appropriate
Position, ultrasonic level gage registration " 30 " place；
(5) after liquid level reaches to test required liquid level, click on " stopping ", below closing presure container, inject ball valve and ultrasonic solution
Meter front end, position ball valve, the explosion ball valve opened at rupture disk in four explosion ball valves, as emptying, closes its excess-three quick-fried
Broken ball valve；
(6) closing electromagnetic valve, " setting " its aperture is as 0；
(7) opening the pressure relief ball valve of any one road arranged at safety valve as leakage path, " setting " heating-up temperature is as 110 DEG C, to liquid
Body heats；
(8) when temperature reaches 100 DEG C, close the explosion ball valve as emptying at rupture disk, make pressure vessel form confined air
Between, " setting " heating-up temperature is as 200 DEG C, and pressure raises；
(9) when pressure is raised to about 1.2MPa, " setting " heating-up temperature, as 0 DEG C, is closed and is added thermode control switch；
(10) open electromagnetic valve, its aperture be adjusted to 100%, with simulated leakage point, observe bleeder action situation and
BLEVE phenomenon；
(11) experimental data is derived；
(12) after liquid natural cooling in pressure vessel, in current recovery tank, close power supply, draw pressure according to experimental data
The time dependent curve of power, temperature also carries out data analysis.
The method that in such scheme, superheated liquid overpressure relief experimental provision carries out discharge of safety valve experiment:
(1) water tank fills water；
(2) close the back-water valve (BWV) at clarified water pump, open and below pressure vessel, inject ball valve and ultrasonic level gage front end ball valve；
(3) open computer input experiment member, then click on " experimental implementation interface "；
(4) click on clarified water pump and " start " button, observe the liquid level that ultrasonic level gage is current, make pressure vessel liquid level reach appropriate
Position, ultrasonic level gage registration " 30 " place；
(5) after liquid level reaches to test required liquid level, click on " stopping ", below closing presure container, inject ball valve and ultrasonic solution
Meter front end, position ball valve, the explosion ball valve opened at rupture disk in four explosion ball valves, as emptying, closes its excess-three quick-fried
Broken ball valve；
(6) closing electromagnetic valve, " setting " its aperture is as 0；
(7) these 4 kinds of any one roads of relief valve of A21W-16P, A21Y-25P, A27W-16P, A28H/Y-16C are opened, with take-off pressure
As a example by power is the A21W-16P relief valve of 1.5MPa, opens the pressure relief ball valve of this arranged at safety valve as leakage path, close remaining
The pressure relief ball valve of three arranged at safety valves, liquid, as 110 DEG C, is heated by " setting " heating-up temperature；
(8) when temperature reaches 100 DEG C, close the explosion ball valve as emptying at rupture disk, make pressure vessel form confined air
Between, " setting " heating-up temperature is as 200 DEG C, and pressure raises；
(9) when pressure is raised to 1.5MPa, A21W-16P safety valve jumping up；" set " heating-up temperature as 0 DEG C, close computer heating control
Switch, observes A21W-16P safety valve jumping up phenomenon；
(10) experimental data is derived；
(11), in pressure vessel after liquid natural cooling, in current recovery tank, close power supply, draw pressure according to experimental data
The time dependent curve of power, temperature also carries out data analysis.
The method that in such scheme, superheated liquid overpressure relief experimental provision carries out rupture disk blasting experiment:
(1) water tank fills water；
(2) close the back-water valve (BWV) at clarified water pump, open and below pressure vessel, inject ball valve and ultrasonic level gage front end ball valve；
(3) open computer input experiment member, then click on " experimental implementation interface "；
(4) click on clarified water pump and " start " button, observe the liquid level that ultrasonic level gage is current, make pressure vessel liquid level reach appropriate
Position, ultrasonic level gage registration " 30 " place；
(5) after liquid level reaches to test required liquid level, click on " stopping ", below closing presure container, inject ball valve and ultrasonic solution
Meter front end, position ball valve；Right arch band grooved rupture disk, antiarch band grooved rupture disk, inverted arch slit type bursting disc, flat board trough of belt are installed
In type rupture disk any one, the antiarch band grooved rupture disk with burst pressure 2.2Mpa model as YC25-2.2-200A/ZH is
Example, installs this rupture disk, opens except any one at this rupture disk, in its excess-three explosion ball valve is as emptying, closes
Other explosion ball valves；
(6) closing electromagnetic valve, " setting " its aperture is as 0；
(7) all valves at closed safe valve, open the explosion ball valve at antiarch band grooved rupture disk as leakage path,
" set " heating-up temperature as 110 DEG C, liquid is heated；
(8) when temperature reaches 100 DEG C, close the explosion ball valve as emptying at rupture disk, make pressure vessel form confined air
Between, " setting " heating-up temperature is as 200 DEG C, and pressure raises；
(9) when pressure is raised to about 1.6MPa, " setting " heating-up temperature is as 250 DEG C, and pressure accelerates to rise, when pressure is raised to
During 2.2MPa, antiarch band grooved rupture disk explosion, observe rupture disk blasting phenomena；
(10) " set " heating-up temperature as 0 DEG C, close computer heating control switch；
(11) experimental data is derived；
(12), in pressure vessel after liquid natural cooling, in current recovery tank, close power supply, draw pressure according to experimental data
The time dependent curve of power, temperature also carries out data analysis.
The method have the advantages that
1, cause safety device take-off to have certain danger due to superheated liquid overpressure relief, the present invention uses and takes the photograph at a high speed
After camera record vessel breaks, leakage point and the feature of safety relief device biphase gas and liquid flow, use the pressure inverting of high frequency sound
Device, temperature sensor, the formation of superpressure and Changing Pattern during the means of testing record BLEVE such as ultrasonic level gage, and
Remote real-time monitoring and record is realized on computer control software.By this Active Eyes, it is achieved that to testing
While the detection of journey remote online, record experiment overall process to greatest extent, experimenter can be complete in comparatively safe scope
Become experiment content, it is achieved that the present invention requirement to safety.
2, in the present invention, pressure vessel is arranged over two groups 8 adapters, in order to install relief valve and the explosion of different model
Sheet, it is simple to observe take-off situation and the mensuration of pressure release curve of all kinds of safety relief device, can be used for safety device take-off experiment,
The kinds of experiments purposes such as BLEVE experiment.
3, in the present invention, the operating mode of this container is High Temperature High Pressure, selects or designs high temperature resistant type equipment, such as the pressure of this device
Power transmitter have employed the high temperature modification pressure transmitter of band radiating fin, the connection between pressure transmitter and pressure vessel,
The hollow high strength steel pipe devising helical structure is connected, and enables pressure transmitter to be placed in its position normally worked, its
Helical structure can increasing heat radiation area, it is ensured that pressure transmitter can not the heat radiation impact on receptor surface, normal work
Make and carry out data acquisition accurately；The highest ambient temperature that can normally work due to 05 selected type electromagnetic valve is 60 DEG C, pressure
In force container, liquid heating-up temperature is the highest more than 200 DEG C, in the attachment structure between electromagnetic valve valve head and valve seat, devises
4 longer high-strength steel six prism connecting rods, it is therefore an objective to valve head is placed in the position adapting to its operating temperature, it is ensured that electromagnetic valve
The function accurately controlled.Additionally, also selected 4 pieces of cross-sectional areas bigger in order to fixing studs, become reducing moment of torsion
The shape impact on performing precision.
4, in the present invention in experimentation by the unlatching of pump in Experiment of Computer Control Technology platform, pressure vessel is carried out water filling,
Being monitored liquid level by ultrasonic level gage, when reaching suitable level, computer controls termination of pumping, presses the heating on data acquisition device
Button, by computer input heating upper limit value, begins to warm up, and in heating process, the parameter such as the temperature and pressure in container is led to
Cross detection pick-up device, by video camera, and based on Mitsubishi Electric's MELSEC-F series Programmable logic Controller (PLC), it is achieved at computer
Terminal monitors and record in real time.According to requirement of experiment, when container inner pressure reach safety valve jumping up pressure general time, by computer
Input electromagnetic valve aperture ratio, controls the unlatching of electromagnetic valve, simulates BLEVE process, now stops heating, pass through high-speed camera
Record experiment overall process.By computer and the effect of electric operator, it is achieved that the remotely control to leakage point size,
And the parameters such as temperature, pressure, liquid level the most directly can read in terminal, process.After experiment terminates, can be by data
Form directly prints or derives, and draws real-time data curve, it is achieved automatization.
Accompanying drawing explanation
Fig. 1 is the front view of pressure vessel in the present invention；
Fig. 2 is the side view of pressure vessel of the present invention；
Fig. 3 is the general illustration of the present invention；
Fig. 4 is the circuit design drawing in the present invention.
In figure: 1 pressure vessel；2 magnetic float liquidlevel meters；3 add thermode；4 rupture disks；5 rupture disk clampers；6 relief valve；
7 electromagnetic valves；8 ultrasonic level gages；9 temperature sensors；10 pressure transmitters；11 explosion ball valves；12 thermometers；13 Pressure gauges；
14 emptying ball valves；15 inject ball valve；16 clarified water pumps；17 threeways；18 pressure relief ball valves；19 water tanks；20 operating board；21 adapters；22 points
Prop up adapter；23 back-water valve (BWV)s；24 video cameras；25 camera pedestals.
Detailed description of the invention
The present invention is further illustrated below in conjunction with the accompanying drawings:
Shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, this superheated liquid overpressure relief experimental provision includes pressure vessel 1, operating board
20, data collecting system, computer control system, the adapter 21 at pressure vessel 1 low head center is provided with and adds thermode 3, adds
Thermode 3 connects space electricity instrument AI-518/518P type temperature controller, and pressure vessel 1 low head is by another two adapters point
Lian Jie not inject ball valve 15 and emptying ball valve 14, it may be assumed that center spud connects heater, side is connected to be vented ball valve 14, separately
Side is connected to inject ball valve 15；Ultrasonic level gage 8 and magnetic float liquidlevel meter 2 adapter are symmetricly set on pressure vessel 1 liang
Side, ultrasonic level gage 8 is arranged on ultrasonic level gage and props up on stay tube, and the adapter picked out from tube wall bottom a stay tube is connected to curved
On head, being connected with the adapter of pressure vessel 1 by loose joint, ball valve, elbow, so, when ball valve is opened, stay tube is just and pressure
Forming connectivity structure in container 1, i.e. propping up the liquid level in stay tube is exactly the liquid level in pressure vessel 1.Its signal transmitting terminal during installation
Face must with liquid level keeping parallelism, ultrasonic level gage 8 and axis and the pressure transmitter 10 of magnetic float liquidlevel meter 2 adapter and
The axis of temperature sensor 9 adapter is 90 ° of angles.Ultrasonic level gage 8 can directly read data, magnetic float liquid on computers
Position meter 2 can read in direct vision.
Out being connected water injection pipe by injecting ball valve 15, water injection pipe is connected in the threeway 17 in operating board 20, threeway 17
Lower interface is connected with the outlet of clarified water pump 16, and the water inlet connecting bend of clarified water pump 16, elbow out receives water by loose joint
Case 19, the upper interface of threeway 17 is connected to loose joint, and loose joint out connects clarified water pump outlet valve, clarified water pump outlet valve by return pipe with
Water tank 19 is connected；Clarified water pump 16 and water tank 19 are all fixed on the base plate of operating board 20.Clarified water pump 16 is by water tank 19
Water is by threeway 17, water injection pipe, this passage injection pressure container 1 of injection ball valve 15, and then heater is in pressure vessel 1
Water heat, start experiment, experiment terminate after, treat that the water in pressure vessel 1 cools down completely, open back-water valve (BWV) 23, make pressure
Water in force container 1 is back in water tank 19.
Pressure vessel 1 is installed the side of rupture disk 4 combination unit and is provided with video camera 24, and video camera 24 is arranged on video camera
On frame 25, video camera 24 and rupture disk 4 combination unit, substantially on the sustained height on ground, carry out whole process to experimentation
Record, to record experimentation by high-speed camera and to cut into slices.
Pressure vessel 1 top is provided with the temperature sensor 9 of data collecting system, pressure transmitter 10, thermometer 12, pressure
Power table 13, pressure vessel 1 bottom be also provided with the temperature sensor 9 of data collecting system, pressure transmitter 10, thermometer 12,
Pressure gauge 13, respectively in order to measure temperature and the pressure of top gas and bottom liquid.Pressure vessel 1 upper cover is provided with three and connects
Pipe 21, the adapter 21 at center is electromagnetic valve adapter, and each adapter 21 of both sides respectively branches out four branch tubes 22, both sides
Four branch tubes 22 are along being centrosymmetrically arranged, and four, side branch tube 22 installs four groups of pressure relief ball valves 18 and relief valve combination
Device, relief valve 6 has four kinds, is connected respectively on four identical pressure relief ball valves 18, and four branch tubes 22 of opposite side install four
Group explosion ball valve 11 and rupture disk clamping device 5, rupture disk 4 also has four kinds, is connected respectively to four identical explosion ball valves 11
On, electromagnetic valve valve seat, electromagnetic valve valve seat four connecting rods horizontally outward extended and electromagnetic valve valve head are installed in electromagnetic valve adapter
It is connected, is driven by drive shaft between electromagnetic valve valve head and valve seat.
The temperature sensor 9 of the data collecting system on pressure vessel 1 top, pressure transmitter 10, thermometer in the present invention
12, Pressure gauge 13 mounting means is: temperature sensor 9, pressure transmitter 10 are arranged on pressure vessel 1 side, thermometer 12, pressure
Power table 13 is symmetrically mounted on the opposite side of pressure vessel 1, and test respectively is top gas temperature and gas pressure, installs pressure
The adapter of table 13 and thermometer 12 all has 30 ° of angles with pressure vessel 1 cross-sectional direction；The data acquisition of pressure vessel 1 bottom
The temperature sensor 9 of system, pressure transmitter 10, thermometer 12, Pressure gauge 13 mounting means be: temperature sensor 9, pressure become
Sending device 10 to be arranged on pressure vessel 1 side, thermometer 12, Pressure gauge 13 are symmetrically mounted on the opposite side of pressure vessel 1, survey respectively
Examination is bottom liquid temperature and fluid pressure, install the adapter of Pressure gauge 13 and thermometer 12 the most also with pressure vessel cross section
There are 30 ° of angles in direction.
Temperature sensor 9, pressure transmitter 10, ultrasonic level gage 8 are all connected to data acquisition by data transmission cable
In header on corresponding controller, electromagnetic valve valve head picks out the corresponding controllers that data transmission cable is received in data acquisition device
On；Each controller connects computer control system, adds thermode 3, clarified water pump 16 is all connected with computer control system.Computer
Terminal can realize device heating, the control of a termination of pumping, it is possible to is controlled the opening degree of electromagnetic valve 7；Can draw temperature,
Pressure versus time curve, it is possible to complete the lateral comparison that experimental result is affected by leakage area, and real at backstage record
Test data；Additionally, terminal support data form directly print and derive, facilitate later data amount control and
Data process.
The present invention uses physics dial plate and sensor measurement device, to ensure the accuracy of data, simultaneously facilitates collection number
Word signal.Computer control system can realize the control to experimental variable, it is also possible to by high-speed camera to experimentation
Record and cut into slices.The data such as the temperature of collection, pressure, liquid level, leakage area, time, after testing after pick-up, by computer
After control system processes, temperature, pressure versus time curve can be drawn, it is possible to completing leakage area affects experimental result
Lateral comparison.
This superheated liquid superpressure experimental apparatus for testing carries out the side of the experiments such as BLEVE experiment, relief valve 6, rupture disk 4
Method.
One, BLEVE experiment:
(1) water tank 19 fills water；
(2) close back-water valve (BWV) 23 at clarified water pump 16, open and below container, inject ball valve 15 and ultrasonic level gage 8 front end ball valve；
(3) software interface is opened, input experiment member, then click on " experimental implementation interface "；
(4) click on clarified water pump 16 " startup " button, observe the liquid level that ultrasonic level gage 8 is current, make tank fill level reach appropriate
Position (liquidometer registration " 30 " place)；
(5) after liquid level reaches to test required liquid level, click on " stopping ", close and below container, inject ball valve 15 and supersonic liquid level
Counting 8 front end ball valves, the explosion ball valve 11 opened at rupture disk 4 in four explosion ball valves 11, as emptying, closes its excess-three
Individual explosion ball valve 11；
(6) closing electromagnetic valve 7, " setting " its aperture has error as 0(, and 0 ~ 0.5 is all defaulted as closing)；
(7) opening the pressure relief ball valve 18 at any one road relief valve 6 as leakage path, " setting " heating-up temperature is as 110 DEG C, right
Liquid heats；
(8) when temperature reaches 100 DEG C, close the explosion ball valve 11 as emptying at rupture disk 4, make container form confined air
Between, " setting " heating-up temperature is as 200 DEG C, and pressure raises；
(9) when pressure is raised to about 1.2MPa, " setting " heating-up temperature, as 0 DEG C, closes heater switch；
(10) open electromagnetic valve 7, its aperture be adjusted to 100%, with simulated leakage point, observe bleeder action situation and
BLEVE phenomenon；
(11) experimental data is derived；
(12) after liquid natural cooling in pressure vessel 1, in current recovery tank 19, power supply is closed.Paint according to experimental data
The time dependent curve of pressing pressure, temperature also carries out data analysis.
Two, discharge of safety valve experiment:
(1) water tank 19 fills water；
(2) close the back-water valve (BWV) 23 at clarified water pump 16, open and below container, inject ball valve 15 and ultrasonic level gage 8 front end ball
Valve；
(3) open computer input experiment member, then click on " experimental implementation interface "；
(4) click on clarified water pump 16 " startup " button, observe the liquid level that ultrasonic level gage 8 is current, make tank fill level reach appropriate
Position (liquidometer registration " 30 " place)；
(5) after liquid level reaches to test required liquid level, click on " stopping ", close and below container, inject ball valve 15 and supersonic liquid level
Counting 8 front end ball valves, the explosion ball valve 11 opened at rupture disk 4 in four explosion ball valves 11, as emptying, closes its excess-three
Individual explosion ball valve 11；
(6) closing electromagnetic valve 7, " setting " its aperture has error as 0(, and 0 ~ 0.5 is all defaulted as closing)；
(7) these 4 kinds of any one roads of relief valve of A21W-16P, A21Y-25P, A27W-16P, A28H/Y-16C are opened, with take-off pressure
As a example by power is the A21W-16P relief valve of 1.5MPa, opens the pressure relief ball valve 18 at this relief valve 6 as leakage path, close it
The pressure relief ball valve 18 of excess-three arranged at safety valve 6, liquid, as 110 DEG C, is heated by " setting " heating-up temperature；
(8) when temperature reaches 100 DEG C, close the explosion ball valve 11 as emptying at rupture disk 4, make container form confined air
Between, " setting " heating-up temperature is as 200 DEG C, and pressure raises；
(9) when pressure is raised to 1.5MPa, A21W-16P relief valve 6 take-off；" set " heating-up temperature as 0 DEG C, close and add thermal control
System switch, observes A21W-16P relief valve 6 take-off phenomenon；
(10) experimental data is derived；
(11), in pressure vessel 1 after liquid natural cooling, in current recovery tank 19, power supply is closed.Draw according to experimental data
The time dependent curve of pressure, temperature also carries out data analysis.
Three, rupture disk blasting experiment:
(1) water tank 19 fills water；
(2) close the back-water valve (BWV) 23 at clarified water pump 16, open and below container, inject ball valve 15 and ultrasonic level gage 8 front end ball
Valve；
(3) open computer input experiment member, then click on " experimental implementation interface "；
(4) click on clarified water pump 16 " startup " button, observe the liquid level that ultrasonic level gage 8 is current, make tank fill level reach appropriate
Position (liquidometer registration " 30 " place)；
(5) after liquid level reaches to test required liquid level, click on " stopping ", close and below container, inject ball valve 15 and supersonic liquid level
Count 8 front end ball valves.Right arch band grooved rupture disk, antiarch band grooved rupture disk, inverted arch slit type bursting disc, flat board band grooved are installed
In rupture disk any one, the antiarch band grooved rupture disk with burst pressure 2.2Mpa model as YC25-2.2-200A/ZH is
Example, installs this rupture disk 4, opens except any one at this rupture disk, in its excess-three explosion ball valve 11 is as emptying, closes
Close other explosion ball valves 11；
(6) closing electromagnetic valve 7, " setting " its aperture has error as 0(, and 0 ~ 0.5 is all defaulted as closing)；
(7) all valves at closed safe valve 6, open the explosion ball valve 11 at antiarch band grooved rupture disk 4 logical as releasing
Road, liquid, as 110 DEG C, is heated by " setting " heating-up temperature；
(8) when temperature reaches 100 DEG C, close the explosion ball valve 11 as emptying at rupture disk 4, make container form confined air
Between, " setting " heating-up temperature is as 200 DEG C, and pressure raises；
(9) when pressure is raised to about 1.6MPa, " setting " heating-up temperature is as 250 DEG C, and pressure accelerates to rise.When pressure is raised to
During 2.2MPa, antiarch band grooved rupture disk 4 explosion, observe rupture disk 4 blasting phenomena；
(10) " set " heating-up temperature as 0 DEG C, close computer heating control switch；
(11) experimental data is derived；
(12), in pressure vessel 1 after liquid natural cooling, in current recovery tank 19, power supply is closed.Draw according to experimental data
The time dependent curve of pressure, temperature also carries out data analysis.
The present invention provides superheated liquid overpressure relief test experimental bed to be used exclusively for studying BLEVE phenomenon and relief valve
6, work phenomenon and the experimental provision of mechanism such as rupture disk 4 safety relief device such as grade, can simulate and fill overheated liquefied gas or overheated
The high-pressure bottle of water, after wall occurs suddenly the rupturing of certain size, in container, superheated liquid can explosivity boiling.By grinding
Study carefully the occurrence condition of BLEVE phenomenon, conclude the operating mode rule that BLEVE phenomenon occurs, for solving to carry out the prevention of this type of accident
Work, reduces BLEVE accident rate, solves the problem that in-service container occurs BLEVE phenomenon because of leakage.
Claims (10)
1. a superheated liquid overpressure relief experimental provision, it is characterised in that: this superheated liquid overpressure relief experimental provision bag
Including pressure vessel (1), operating board (20), data collecting system, computer control system, pressure vessel (1) is internally installed to be had and adds
Thermode (3), is provided with injection ball valve (15) and emptying ball valve (14), ultrasonic level gage (8) at pressure vessel (1) low head
It is symmetricly set on pressure vessel (1) both sides with magnetic float liquidlevel meter (2) adapter；Pressure vessel (1) top is provided with data acquisition
The temperature sensor (9) of system, pressure transmitter (10), thermometer (12), Pressure gauge (13), pressure vessel (1) bottom is also pacified
Equipped with the temperature sensor (9) of data collecting system, pressure transmitter (10), thermometer (12), Pressure gauge (13)；Pressure vessel
(1) upper cover is provided with three adapters (21), and the adapter at center is electromagnetic valve adapter, and each adapter of both sides respectively branches out four
Branch tube (22), side branch tube (22) installs four groups of pressure relief ball valves (18) and relief valve combination unit, opposite side branch
Four groups of explosion ball valves (11) and rupture disk combination unit are installed in adapter (22), and electromagnetic valve adapter installs electromagnetic valve valve seat, by electromagnetism
Four connecting rods that valve base horizontally outward extends are connected with electromagnetic valve valve head, are driven by drive shaft between electromagnetic valve valve head and valve seat
Dynamic；Being provided with clarified water pump (16) and water tank (19) in operating board (20), water tank (19) connects clarified water pump (16), and clarified water pump (16) is even
Connect the injection ball valve (15) of pressure vessel (1)；Temperature sensor (9), pressure transmitter (10), ultrasonic level gage (8) are the most logical
Crossing in data transmission cable is connected to data acquisition device on corresponding controller, electromagnetic valve valve head picks out data transmission cable and receives
In corresponding controllers in data acquisition device；Each controller connects computer control system, adds thermode (3) and connects temperature control
Device, clarified water pump (16) is connected with computer control system.
Superheated liquid overpressure relief experimental provision the most according to claim 1, it is characterised in that: described pressure vessel
(1) side installing rupture disk combination unit is provided with video camera (24), and video camera (24) is arranged on camera pedestal (25), takes the photograph
Camera (24) and rupture disk combination unit are substantially on the sustained height on ground.
Superheated liquid overpressure relief experimental provision the most according to claim 2, it is characterised in that: described pressure vessel
(1) temperature sensor (9) of the data collecting system on top, pressure transmitter (10), thermometer (12), Pressure gauge (13) are installed
Mode is: temperature sensor (9), pressure transmitter (10) are arranged on pressure vessel (1) side, thermometer (12), Pressure gauge
(13) being symmetrically mounted on the opposite side of pressure vessel (1), the adapter installing Pressure gauge (13) and thermometer (12) is all held with pressure
Device (1) cross-sectional direction has 30 ° of angles；The temperature sensor (9) of the data collecting system of pressure vessel (1) bottom, pressure become
Device (10), thermometer (12), Pressure gauge (13) mounting means is sent to be: temperature sensor (9), pressure transmitter (10) are arranged on pressure
Force container (1) side, thermometer (12), Pressure gauge (13) are symmetrically mounted on the opposite side of pressure vessel (1), install Pressure gauge
And the adapter of thermometer (12) the most also has 30 ° of angles with pressure vessel (1) cross-sectional direction (13).
Superheated liquid overpressure relief experimental provision the most according to claim 3, it is characterised in that: described supersonic liquid level
The axis that meter (8) and the axis taken over of magnetic float liquidlevel meter (2) and pressure transmitter (10) and temperature sensor (9) are taken in
90 ° of angles.
Superheated liquid overpressure relief experimental provision the most according to claim 4, it is characterised in that: described rupture disk combination
Device is made up of rupture disk clamper (5) and rupture disk (4).
Superheated liquid overpressure relief experimental provision the most according to claim 5, it is characterised in that: described electromagnetic valve valve head
And the connecting rod between valve seat is high-strength steel six prism connecting rod, the long 20cm of connecting rod.
Superheated liquid overpressure relief experimental provision the most according to claim 6, it is characterised in that: described pressure transmitter
(10) it is connected by the hollow high strength steel pipe of helical structure with pressure vessel (1).
Superheated liquid overpressure relief experimental provision the most according to claim 7, it is characterised in that: described superheated liquid surpasses
Pressure is released the method that experimental provision carries out BLEVE experiment:
(1) water tank (19) fills water；
(2) close the back-water valve (BWV) (23) at clarified water pump (16) place, open pressure vessel (1) lower section and inject ball valve (15) and ultrasonic solution
Meter (8) front end, position ball valve；
(3) open computer input experiment member, then click on " experimental implementation interface "；
(4) click on clarified water pump (16) " startup " button, observe the liquid level that ultrasonic level gage (8) is current, make pressure vessel (1) liquid
Position reaches appropriate position, ultrasonic level gage (8) registration " 30 " place；
(5) after liquid level reaches to test required liquid level, click on " stopping ", closing presure container (1) lower section injection ball valve (15) and
Ultrasonic level gage (8) front end ball valve, the explosion ball valve (11) opened in four, rupture disk (4) place explosion ball valve (11) is made
For emptying, close its excess-three explosion ball valve (11)；
(6) closing electromagnetic valve (7), " setting " its aperture is as 0；
(7) opening the pressure relief ball valve (18) at relief valve (6) place, any one road as leakage path, " setting " heating-up temperature is as 110
DEG C, liquid is heated；
(8) when temperature reaches 100 DEG C, close rupture disk (4) place explosion ball valve (11) as emptying, make pressure vessel (1)
Forming confined space, " setting " heating-up temperature is as 200 DEG C, and pressure raises；
(9) when pressure is raised to about 1.2MPa, " setting " heating-up temperature, as 0 DEG C, is closed and is added thermode (3) control switch；
(10) open electromagnetic valve (7), its aperture be adjusted to 100%, with simulated leakage point, observe bleeder action situation and
BLEVE phenomenon；
(11) experimental data is derived；
(12) after liquid natural cooling in pressure vessel (1), in current recovery tank (19), power supply is closed, according to experiment number
According to drawing pressure, the time dependent curve of temperature and carrying out data analysis.
Superheated liquid overpressure relief experimental provision the most according to claim 7, it is characterised in that: described superheated liquid surpasses
Pressure is released the method that experimental provision carries out discharge of safety valve experiment:
(1) water tank (19) fills water；
(2) close the back-water valve (BWV) (23) at clarified water pump (16) place, open pressure vessel (1) lower section and inject ball valve (15) and ultrasonic solution
Meter (8) front end, position ball valve；
(3) open computer input experiment member, then click on " experimental implementation interface "；
(4) click on clarified water pump (16) " startup " button, observe the liquid level that ultrasonic level gage (8) is current, make pressure vessel (1) liquid
Position reaches appropriate position, ultrasonic level gage (8) registration " 30 " place；
(5) after liquid level reaches to test required liquid level, click on " stopping ", closing presure container (1) lower section injection ball valve (15) and
Ultrasonic level gage (8) front end ball valve, the explosion ball valve (11) opened in four, rupture disk (4) place explosion ball valve (11) is made
For emptying, close its excess-three explosion ball valve (11)；
(6) closing electromagnetic valve (7), " setting " its aperture is as 0；
(7) these 4 kinds of any one roads of relief valve of A21W-16P, A21Y-25P, A27W-16P, A28H/Y-16C are opened, with take-off pressure
As a example by power is the A21W-16P relief valve of 1.5MPa, open the pressure relief ball valve (18) at this relief valve (6) place as leakage path, pass
Closing the pressure relief ball valve (18) at its excess-three relief valve (6) place, liquid, as 110 DEG C, is heated by " setting " heating-up temperature；
(8) when temperature reaches 100 DEG C, close rupture disk (4) place explosion ball valve (11) as emptying, make pressure vessel (1)
Forming confined space, " setting " heating-up temperature is as 200 DEG C, and pressure raises；
(9) when pressure is raised to 1.5MPa, A21W-16P safety valve jumping up；" set " heating-up temperature as 0 DEG C, close computer heating control
Switch, observes A21W-16P safety valve jumping up phenomenon；
(10) experimental data is derived；
(11), after pressure vessel (1) interior liquid natural cooling, in current recovery tank (19), power supply is closed, according to experimental data
Draw pressure, the time dependent curve of temperature and carry out data analysis.
Superheated liquid overpressure relief experimental provision the most according to claim 7, it is characterised in that: described superheated liquid
Overpressure relief experimental provision carries out the method for rupture disk blasting experiment:
(1) water tank (19) fills water；
(2) close the back-water valve (BWV) (23) at clarified water pump (16) place, open pressure vessel (1) lower section and inject ball valve (15) and ultrasonic solution
Meter (8) front end, position ball valve；
(3) open computer input experiment member, then click on " experimental implementation interface "；
(4) click on clarified water pump (16) " startup " button, observe the liquid level that ultrasonic level gage (8) is current, make pressure vessel (1) liquid
Position reaches appropriate position, ultrasonic level gage (8) registration " 30 " place；
(5) after liquid level reaches to test required liquid level, click on " stopping ", closing presure container (1) lower section injection ball valve (15) and
Ultrasonic level gage (8) front end ball valve；Right arch band grooved rupture disk, antiarch band grooved rupture disk, inverted arch slit type explosion are installed
In sheet, flat board band grooved rupture disk any one, the antiarch band with burst pressure 2.2Mpa model as YC25-2.2-200A/ZH
As a example by grooved rupture disk, this rupture disk (4) is installed, opens except in this rupture disk (4) place, its excess-three explosion ball valve (11)
Any one is as emptying, closes other explosion ball valves (11)；
(6) closing electromagnetic valve (7), " setting " its aperture is as 0；
(7) all valves at closed safe valve (6) place, open the explosion ball valve at antiarch band grooved rupture disk logical as releasing
Road, liquid, as 110 DEG C, is heated by " setting " heating-up temperature；
(8) when temperature reaches 100 DEG C, close rupture disk (4) place explosion ball valve (11) as emptying, make pressure vessel (1)
Forming confined space, " setting " heating-up temperature is as 200 DEG C, and pressure raises；
(9) when pressure is raised to about 1.6MPa, " setting " heating-up temperature is as 250 DEG C, and pressure accelerates to rise；When pressure is raised to
During 2.2MPa, antiarch band grooved rupture disk explosion, observe rupture disk blasting phenomena；
(10) " set " heating-up temperature as 0 DEG C, close computer heating control switch；
(11) experimental data is derived；
(12), after pressure vessel (1) interior liquid natural cooling, in current recovery tank (19), power supply is closed, according to experimental data
Draw pressure, the time dependent curve of temperature and carry out data analysis.
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| CN106323609B (en) | 2018-06-05 |
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Effective date of registration: 20210325 Address after: 225002 No.3 Fuyou Road, huoqiao, Shatou Town, Guangling District, Yangzhou City, Jiangsu Province Patentee after: Jiangsu Kaitong boiler and pressure vessel Co.,Ltd. Address before: 314200 No.3 Factory Building in liangchuang center, 211 Jufu West Road, Jufu village, dushangang Town, Pinghu City, Jiaxing City, Zhejiang Province Patentee before: Jiaxing Junbo Pml Precision Mechanism Ltd. |