CN106323609B - Superheated liquid overpressure relief experimental provision - Google Patents
Superheated liquid overpressure relief experimental provision Download PDFInfo
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- CN106323609B CN106323609B CN201610642495.7A CN201610642495A CN106323609B CN 106323609 B CN106323609 B CN 106323609B CN 201610642495 A CN201610642495 A CN 201610642495A CN 106323609 B CN106323609 B CN 106323609B
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- G—PHYSICS
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- 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
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Abstract
The present invention relates to superheated liquid overpressure relief experimental provisions, this superheated liquid overpressure relief experimental provision includes pressure vessel, computer control system, heating electrode inside pressure vessel is installed, injection ball valve and emptying ball valve are provided at lower head of pressure vessel；Pressure vessel is equipped with temperature sensor, pressure transmitter, thermometer, pressure gauge, ultrasonic level gage, magnetic float liquidlevel meter；Pressure vessel upper cover is taken over there are three setting, taking over for center is taken over for solenoid valve, the each of both sides takes over and respectively branches out four branch tubes, one side branch tube installs four groups of pressure relief ball valves and safety valve combination unit, opposite side branch tube installs four groups of ball valves and rupture disk combination unit, the solenoid valve place of taking over installation solenoid valve；Solenoid valve, temperature sensor, pressure transmitter, ultrasonic level gage are all connected on corresponding controller；Each controller connects computer control system.The present invention realizes experimenter can complete experiment in the scope of safety, safe.
Description
Technical field
The present invention relates to for study the safety relief devices such as BLEVE phenomenons and safety valve, rupture disk work phenomenon and
The experimental provision of mechanism, and in particular to superheated liquid overpressure relief experimental provision.
Background technology
Pressure vessel is widely used in industrial each department such as petrochemical industry, bio-pharmaceuticals, food processing；Together
When, the pressure vessels such as LPG cyoinders are also widely used in resident living.However, it over time, is on active service
In the industrial production sectors such as oil, chemical industry, heating power, combustion gas pressure vessel because there are etching problem, becoming serious safety
Hidden danger constitutes safely serious threat to national economy and the people's lives and property.The in-service pressure for containing superheated liquid is held
There is the defects of spot corrosion, aperture due to corrosion etc. in device, can generate superpressure leakage, trigger boiling liquid expanding-vapor explosion
（BLEVE—Boiling Liquid Expanding Vapor Explosion）Phenomenon, the phenomenon are that a kind of harmfulness is very big
Physical explosion, this kind of accident be easy to cause a large amount of injures and deaths and huge economic losses of personnel once occurring.
Meanwhile substantial amounts of dangerous liquefied gas is stored in our city and periphery, such as many of petrochemical process
Pressure vessel, particularly large-scale storage tank, what is filled is generally used for the dangerous liquid gas of various production and living, they usually make
It is big with rate height, storage capacity.Store the storage tank of these liquefied gas have occur BLEVE accidents potential danger, once production or
These containers are failed due to various reasons in use, the environment change dramatically inside and outside container so that liquid gas is rapidly
Boiling is possible to promote that BLEVE accidents occur.For example fill dangerous liquefied gas（LPG, LNG）The transportation tank car of fuel, by
In the frequent use in recent decades, the research to tank car BLEVE accidents is exactly one of hot spot of safety project construction.
The content 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 also solves in-service container because letting out for solving effectively prevent inservice pressure vessel BLEVE accidents at present
The problem of leaking and BLEVE phenomenons occur.
The technical solution adopted by the present invention to solve the technical problems is：This superheated liquid overpressure relief experimental provision bag
Pressure vessel, operation console, data collecting system, computer control system are included, heating electrode, pressure are installed inside pressure vessel
Injection ball valve and emptying ball valve are provided at container low head, ultrasonic level gage and magnetic float liquidlevel meter are taken over and be symmetricly set on
Pressure vessel both sides；Pressure vessel top is equipped with the temperature sensor of data collecting system, pressure transmitter, thermometer, pressure
Power table, pressure vessel lower part are also equipped with temperature sensor, pressure transmitter, thermometer, the pressure gauge of data collecting system；Pressure
Force container upper cover is set there are three taking over, and taking over for center is taken over for solenoid valve, and each of both sides takes over and respectively branch out four
Branch tube, one side branch tube install four groups of pressure relief ball valves and safety valve combination unit, and opposite side branch tube installs four groups
Explosion ball valve and rupture disk combination unit, solenoid valve are taken over installation electromagnetism valve base, are horizontally outward extended by electromagnetism valve base
Four connecting rods are connected with solenoid valve valve head, are driven between solenoid valve valve head and valve seat by drive shaft；It is provided in operation console clear
Water pump and water tank, water tank connection clarified water pump, clarified water pump connect the injection ball valve of pressure vessel；Temperature sensor, pressure transmitter,
Ultrasonic level gage is connected in data acquisition device by data transmission cable on corresponding controller, and solenoid valve valve head picks out
Data transmission cable is connected in the corresponding controllers in data acquisition device；Each controller connects computer control system, heating electricity
Pole connects temperature controller, and clarified water pump is connected with computer control system.
The one side of pressure vessel installation rupture disk combination unit is provided with video camera in said program, and video camera is mounted on and takes the photograph
On camera support, video camera and rupture disk are combined the unit substantially on the sustained height away from ground, with by high-speed camera to reality
The process of testing is recorded and is cut into slices.
The temperature sensor of the data collecting system on pressure vessel top, pressure transmitter, thermometer, pressure in said program
Power table mounting means is：Temperature sensor, pressure transmitter are mounted on pressure vessel one side, and thermometer, pressure gauge are symmetrically installed
In the opposite side of pressure vessel, install pressure gauge and taking over for thermometer has 30 ° of angles with pressure vessel cross-sectional direction；Pressure
Temperature sensor, pressure transmitter, thermometer, the pressure gauge mounting means of the data collecting system of force container lower part be：Temperature
Sensor, pressure transmitter are mounted on pressure vessel one side, and thermometer, pressure gauge are symmetrically mounted on the opposite side of pressure vessel,
Installation pressure gauge and taking over for thermometer also have 30 ° of angles with pressure vessel cross-sectional direction.
The axis that ultrasonic level gage and magnetic float liquidlevel meter are taken in said program and pressure transmitter and temperature sensing
The axis that device is taken over is in 90 ° of angles.
Connecting rod in said program between solenoid valve valve head and valve seat is high-strength steel hexagonal prisms connecting rod, and connecting rod is long
20cm。
Pressure transmitter is connected with pressure vessel by the hollow high strength steel pipe of helical structure in said program, makes pressure
Power transmitter is placed in its position that can be worked normally, helical structure can increasing heat radiation area, ensure that pressure transmitter
It can be influenced from the heat radiation of vessel surface, work normally and accurately carry out data acquisition.
Said program borehole blasting piece combination unit is made of rupture disk clamper and rupture disk.
The method that superheated liquid overpressure relief experimental provision carries out BLEVE experiments in said program：
（1）Filling water in water tank；
（2）The back-water valve (BWV) at clarified water pump is closed, opens injection ball valve and ultrasonic level gage front end ball below pressure vessel
Valve；
（3）Computer input experiment member is opened, then clicks on " experimental implementation interface "；
（4）Clarified water pump " startup " button is clicked on, the current liquid level of observation ultrasonic level gage reaches pressure vessel liquid level
Appropriate position, at ultrasonic level gage registration " 30 "；
（5）It after liquid level reaches liquid level needed for experiment, clicks on " stopping ", closes injection ball valve and ultrasound below pressure vessel
Ripple liquid level gauge front end ball valve opens an explosion ball valve at rupture disk in four explosion ball valves as emptying, closes its excess-three
A explosion ball valve；
（6）Solenoid valve is closed, " setting " its aperture is 0；
（7）The pressure relief ball valve of arbitrary arranged at safety valve all the way is opened as leakage path, " setting " heating temperature as 110 DEG C,
Liquid is heated；
（8）When temperature reaches 100 DEG C, the explosion ball valve as emptying at rupture disk is closed, forms pressure vessel close
Space is closed, " setting " heating temperature is 200 DEG C, pressure rise；
（9）When pressure is raised to 1.2MPa or so, " setting " heating temperature closes heating electrode controlling switch as 0 DEG C；
（10）Open solenoid valve, its aperture be adjusted to 100%, with simulated leakage point, observation bleeder action situation and
BLEVE phenomenons；
（11）Export experimental data；
（12）After liquid natural cooling in pressure vessel, in current recovery tank, power supply is closed, is painted according to experimental data
Curve that pressing pressure, temperature change over time simultaneously carries out data analysis.
The method that superheated liquid overpressure relief experimental provision carries out discharge of safety valve experiment in said program：
（1）Filling water in water tank；
（2）The back-water valve (BWV) at clarified water pump is closed, opens injection ball valve and ultrasonic level gage front end ball below pressure vessel
Valve；
（3）Computer input experiment member is opened, then clicks on " experimental implementation interface "；
（4）Clarified water pump " startup " button is clicked on, the current liquid level of observation ultrasonic level gage reaches pressure vessel liquid level
Appropriate position, at ultrasonic level gage registration " 30 "；
（5）It after liquid level reaches liquid level needed for experiment, clicks on " stopping ", closes injection ball valve and ultrasound below pressure vessel
Ripple liquid level gauge front end ball valve opens an explosion ball valve at rupture disk in four explosion ball valves as emptying, closes its excess-three
A explosion ball valve；
（6）Solenoid valve is closed, " setting " its aperture is 0；
（7）A21W-16P, A21Y-25P, A27W-16P, A28H/Y-16C this 4 kinds of safety valves are opened arbitrarily all the way, to rise
Exemplified by jumping the A21W-16P safety valves that pressure is 1.5MPa, the pressure relief ball valve of this arranged at safety valve is opened as leakage path, is closed
The pressure relief ball valve of its excess-three arranged at safety valve, " setting " heating temperature heat liquid as 110 DEG C；
（8）When temperature reaches 100 DEG C, the explosion ball valve as emptying at rupture disk is closed, forms pressure vessel close
Space is closed, " setting " heating temperature is 200 DEG C, pressure rise；
（9）When pressure is raised to 1.5MPa, A21W-16P safety valve jumping ups；" setting " heating temperature closes heating as 0 DEG C
Control switch, observes A21W-16P safety valve jumping up phenomenons；
（10）Export experimental data；
（11）In pressure vessel after liquid natural cooling, in current recovery tank, power supply is closed, is drawn according to experimental data
Curve that pressure, temperature change over time simultaneously carries out data analysis.
The method that superheated liquid overpressure relief experimental provision carries out rupture disk blasting experiment in said program：
（1）Filling water in water tank；
（2）The back-water valve (BWV) at clarified water pump is closed, opens injection ball valve and ultrasonic level gage front end ball below pressure vessel
Valve；
（3）Computer input experiment member is opened, then clicks on " experimental implementation interface "；
（4）Clarified water pump " startup " button is clicked on, the current liquid level of observation ultrasonic level gage reaches pressure vessel liquid level
Appropriate position, at ultrasonic level gage registration " 30 "；
（5）It after liquid level reaches liquid level needed for experiment, clicks on " stopping ", closes injection ball valve and ultrasound below pressure vessel
Ripple liquid level gauge front end ball valve；Right arch band groove profile rupture disk, antiarch band groove profile rupture disk, inverted arch slit type bursting disc, tablet are installed
Any one in band groove profile rupture disk, with the antiarch band groove profile explosion of burst pressure 2.2Mpa models YC25-2.2-200A/ZH
Exemplified by piece, this rupture disk is installed, is opened except any one at this rupture disk, in its excess-three explosion ball valve is used as emptying,
Close other explosion ball valves；
（6）Solenoid valve is closed, " setting " its aperture is 0；
（7）It is logical as releasing with the explosion ball valve at groove profile rupture disk to open antiarch for all valves at closed safe valve
Road, " setting " heating temperature heat liquid as 110 DEG C；
（8）When temperature reaches 100 DEG C, the explosion ball valve as emptying at rupture disk is closed, forms pressure vessel close
Space is closed, " setting " heating temperature is 200 DEG C, pressure rise；
（9）When pressure is raised to 1.6MPa or so, as 250 DEG C, pressure accelerates " setting " heating temperature, when pressure liter
During to 2.2MPa, rupture disk blasting phenomena is observed in antiarch band groove profile rupture disk explosion；
（10）" setting " heating temperature closes computer heating control switch as 0 DEG C；
（11）Export experimental data；
（12）In pressure vessel after liquid natural cooling, in current recovery tank, power supply is closed, is drawn according to experimental data
Curve that pressure, temperature change over time simultaneously carries out data analysis.
The invention has the advantages that：
1st, since superheated liquid overpressure relief triggers safety device take-off to have certain danger, height is used in the present invention
After fast camera record vessel breaks, the characteristics of leakage point and safety relief device biphase gas and liquid flow, using the pressure of high frequency sound
The formation of superpressure and changing rule during the means of testing such as transmitter, temperature sensor, ultrasonic level gage record BLEVE,
And remote real-time monitoring and record are realized on computer control software.By this Active Eyes, realize to reality
While testing the detection of process remote online, record tests overall process to greatest extent, and experimenter can be in comparatively safe scope
Interior completion experiment content realizes requirement of the present invention to security.
2nd, taken in the present invention above pressure vessel equipped with two groups 8, to install the safety valve of different model and explosion
Piece, convenient for observing the measure of the take-off situation of all kinds of safety relief devices and pressure release curve, tested available for safety device take-off,
The kinds of experiments purposes such as BLEVE experiments.
3rd, the operating mode of the container is high temperature and pressure in the present invention, selects or designs high temperature resistant type equipment, such as the pressure of the present apparatus
Power transmitter employs the high temperature modification pressure transmitter with radiating fin, the connection between pressure transmitter and pressure vessel,
The hollow high strength steel pipe for devising helical structure is connected, and pressure transmitter is enable to be placed in its position worked normally,
Helical structure can increasing heat radiation area, ensure that pressure transmitter can influence from the heat radiation of vessel surface, normal work
Make and accurately carry out data acquisition；Since the highest environment temperature that 05 selected type solenoid valve can work normally is 60 DEG C, pressure
Up to 200 DEG C or more of liquid heating temperature in force container in the connection structure between solenoid valve valve head and valve seat, devise
4 longer high-strength steel hexagonal prisms connecting rods, it is therefore an objective to valve head be placed in the position for adapting to its operating temperature, ensure that solenoid valve
The function of accurately controlling.In addition, also select 4 pieces of cross-sectional areas larger to fixed studs, to reduce torque change
Influence of the shape to execution precision.
4th, in the present invention in experimentation by the unlatching pumped in Experiment of Computer Control Technology platform, water filling is carried out to pressure vessel,
Liquid level is monitored by ultrasonic level gage, when reaching suitable level, the heating on data acquisition device is pressed in computer control termination of pumping
Button inputs heating upper limit value by computer, begins to warm up, the parameters such as temperature and pressure in heating process in container are led to
Detection pick-up device is crossed, by video camera, and based on Mitsubishi Electric's MELSEC-F series Programmable logic Controller (PLC)s, is realized in computer
Terminal monitors in real time and record.According to requirement of experiment, when container inner pressure reach safety valve jumping up pressure it is general when, by computer
Solenoid valve aperture ratio is inputted, controls the unlatching of solenoid valve, simulates BLEVE processes, stops heating at this time, passes through high-speed camera
Record experiment overall process.By the effect of computer and electric operator, the control remotely to leakage point size is realized,
And the parameters such as temperature, pressure, liquid level also can directly read in terminal, handle.It, can be by data after experiment
Report is directly printed or exported, and draws real-time data curve, realizes automation.
Description of the drawings
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 heating electrodes；4 rupture disks；5 rupture disk clampers；6 safety valves；
7 solenoid 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 injection ball valves；16 clarified water pumps；17 threeways；18 pressure relief ball valves；19 water tanks；20 operation consoles；21 take over；22 points
Branch is taken over；23 back-water valve (BWV)s；24 video cameras；25 camera pedestals.
Specific embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings：
With reference to shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, this superheated liquid overpressure relief experimental provision includes pressure vessel 1, behaviour
Make platform 20, data collecting system, computer control system, the take over 21 at 1 low head center of pressure vessel is equipped with heating electrode
3, heating electrode 3 connects space electricity instrument AI-518/518P type temperature controllers, and 1 low head of pressure vessel is connect by another two
Pipe connects injection ball valve 15 and emptying ball valve 14 respectively, i.e.,：Center spud connects heater, and one side, which is taken over, is connected to emptying ball valve
14, opposite side, which is taken over, is connected to injection ball valve 15；Ultrasonic level gage 8 and magnetic float liquidlevel meter 2, which are taken over, is symmetricly set on pressure appearance
1 both sides of device, ultrasonic level gage 8 are mounted on ultrasonic level gage support tube, the company of taking over that support bottom of the tube is picked out from tube wall
It is connected on elbow, is connected by loose joint, ball valve, elbow with taking over for pressure vessel 1, in this way, when ball valve is opened, support tube is just
With formation connectivity structure in pressure vessel 1, i.e. liquid level in support tube is exactly the liquid level in pressure vessel 1.Its signal during installation
Emitting facet has to the axis and pressure inverting taken over liquid level keeping parallelism, ultrasonic level gage 8 and magnetic float liquidlevel meter 2
The axis that device 10 and temperature sensor 9 are taken over is in 90 ° of angles.Ultrasonic level gage 8 can directly read data, magnetic on computers
Float level meter 2 can direct vision reading.
Water injection pipe is out connected by injection ball valve 15, water injection pipe is connected in the threeway 17 in operation console 20, threeway 17
Lower interface is connected with the water outlet of clarified water pump 16, the water inlet connecting bend of clarified water pump 16, and elbow is out connected to water by loose joint
Case 19, the upper interface of threeway 17 are 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 bottom plate of operation console 20.Clarified water pump 16 will be in water tank 19
Water is by the way that in threeway 17, water injection pipe, injection ball valve 15 this passage injection pressure vessel 1, then heater is in pressure vessel 1
Water heated, start to test, after experiment, 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 installs the one side that rupture disk 4 combines the unit and is provided with video camera 24, and video camera 24 is mounted on video camera
On frame 25, video camera 24 is combined the unit with rupture disk 4 substantially on the sustained height away from ground, experimentation is carried out whole
Record, experimentation is recorded and cut into slices by high-speed camera.
1 top of pressure vessel is equipped with the temperature sensor 9 of data collecting system, pressure transmitter 10, thermometer 12, pressure
Power table 13,1 lower part of pressure vessel be also equipped with the temperature sensor 9 of data collecting system, pressure transmitter 10, thermometer 12,
Pressure gauge 13, respectively measuring the temperature of top gas and bottom liquid and pressure.1 upper cover of pressure vessel connects there are three setting
Pipe 21, the take over 21 at center are taken over for solenoid valve, and each take over 21 of both sides respectively branches out four branch tubes 22 again, both sides
For four branch tubes 22 along being centrosymmetrically arranged, the branch tube 22 of one side four installs four groups of pressure relief ball valves 18 and safety valve combination
Device, there are four types of safety valves 6, is connected respectively on four identical pressure relief ball valves 18, four installations of branch tube 22 four of opposite side
Group explosion ball valve 11 and explosion holder for x-ray film 5, rupture disk 4 also there are four types of, be connected respectively to four identical explosion ball valves 11
On, solenoid valve takes over installation electromagnetism valve base, by four connecting rods that electromagnetism valve base horizontally outward extends and solenoid valve valve head
It is connected, is driven between solenoid valve valve head and valve seat by drive shaft.
The temperature sensor 9 of the data collecting system on 1 top of pressure vessel, pressure transmitter 10, thermometer in the present invention
12nd, 13 mounting means of pressure gauge is：Temperature sensor 9, pressure transmitter 10 are mounted on 1 one side of pressure vessel, thermometer 12, pressure
Power table 13 is symmetrically mounted on the opposite side of pressure vessel 1, and what is tested respectively is top gas temperature and gas pressure, installs pressure
Table 13 and taking over for thermometer 12 have 30 ° of angles with 1 cross-sectional direction of pressure vessel；The data acquisition of 1 lower part of pressure vessel
Temperature sensor 9, pressure transmitter 10, thermometer 12,13 mounting means of pressure gauge of system be：Temperature sensor 9, pressure become
Device 10 is sent to be mounted on 1 one side of pressure vessel, 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 pressure gauge 13 and thermometer 12 take over also with pressure vessel cross section
There are 30 ° of angles in direction.
Temperature sensor 9, pressure transmitter 10, ultrasonic level gage 8 are connected to data by data transmission cable and adopt
In header on corresponding controller, solenoid valve valve head picks out the corresponding controllers that data transmission cable is connected in data acquisition device
On；Each controller connects computer control system, and heating electrode 3, clarified water pump 16 are connected with computer control system.Computer
Terminal can realize the control to device heating, termination of pumping, and also the opening degree of solenoid valve 7 can be controlled；Can draw temperature,
Pressure versus time curve can also complete the lateral comparison that leakage area influences experimental result, and be recorded in fact on backstage
Test data；In addition, terminal support data report directly print and export, facilitate later data amount control and
Data processing.
The present invention is using physics dial plate and sensor gauges part, to ensure the accuracy of data, while convenient for acquisition number
Word signal.Computer control system can realize the control to experimental variable, can also be by high-speed camera to experimentation
It is recorded and is cut into slices.The data such as temperature, pressure, liquid level, leakage area, the time of acquisition, after testing after pick-up, by computer
After control system processing, temperature, pressure versus time curve can be drawn, can also complete leakage area influences experimental result
Lateral comparison.
This superheated liquid superpressure experimental apparatus for testing carries out the side of the experiments such as BLEVE experiments, safety valve 6, rupture disk 4
Method.
First, BLEVE is tested：
（1）Filling water in water tank 19；
（2）Back-water valve (BWV) 23 at clarified water pump 16 is closed, opens injection 8 front end ball of ball valve 15 and ultrasonic level gage below container
Valve；
（3）Software interface is opened, then input experiment member clicks on " experimental implementation interface "；
（4）Clarified water pump 16 " startup " button is clicked on, the current liquid level of observation ultrasonic level gage 8 reaches tank fill level
Appropriate position（At liquid level gauge registration " 30 "）；
（5）It after liquid level reaches liquid level needed for experiment, clicks on " stopping ", closes injection ball valve 15 and ultrasonic wave below container
8 front end ball valve of liquid level gauge opens an explosion ball valve 11 at rupture disk 4 in four explosion ball valves 11 as emptying, closes it
Excess-three explosion ball valve 11；
（6）Solenoid valve 7 is closed, " setting " its aperture is 0（Error is had, 0 ~ 0.5 is all defaulted as closing）；
（7）The pressure relief ball valve 18 at arbitrary safety valve 6 all the way is opened as leakage path, " setting " heating temperature is 110
DEG C, liquid is heated；
（8）When temperature reaches 100 DEG C, the explosion ball valve 11 as emptying at rupture disk 4 is closed, forms container closed
Space, " setting " heating temperature is 200 DEG C, pressure rise；
（9）When pressure is raised to 1.2MPa or so, " setting " heating temperature closes heater switch as 0 DEG C；
（10）Solenoid valve 7 is opened, its aperture is adjusted to 100%, with simulated leakage point, observation bleeder action situation
And BLEVE phenomenons；
（11）Export experimental data；
（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 curve that pressure, temperature change over time and carry out data analysis.
2nd, discharge of safety valve is tested：
（1）Filling water in water tank 19；
（2）The back-water valve (BWV) 23 at clarified water pump 16 is closed, opens 8 front end of injection ball valve 15 and ultrasonic level gage below container
Ball valve；
（3）Computer input experiment member is opened, then clicks on " experimental implementation interface "；
（4）Clarified water pump 16 " startup " button is clicked on, the current liquid level of observation ultrasonic level gage 8 reaches tank fill level
Appropriate position（At liquid level gauge registration " 30 "）；
（5）It after liquid level reaches liquid level needed for experiment, clicks on " stopping ", closes injection ball valve 15 and ultrasonic wave below container
8 front end ball valve of liquid level gauge opens an explosion ball valve 11 at rupture disk 4 in four explosion ball valves 11 as emptying, closes it
Excess-three explosion ball valve 11；
（6）Solenoid valve 7 is closed, " setting " its aperture is 0（Error is had, 0 ~ 0.5 is all defaulted as closing）；
（7）A21W-16P, A21Y-25P, A27W-16P, A28H/Y-16C this 4 kinds of safety valves are opened arbitrarily all the way, to rise
Exemplified by jumping the A21W-16P safety valves that pressure is 1.5MPa, the pressure relief ball valve 18 at this safety valve 6 is opened as leakage path, is closed
The pressure relief ball valve 18 of its excess-three arranged at safety valve 6 is closed, " setting " heating temperature heats liquid as 110 DEG C；
（8）When temperature reaches 100 DEG C, the explosion ball valve 11 as emptying at rupture disk 4 is closed, forms container closed
Space, " setting " heating temperature is 200 DEG C, pressure rise；
（9）When pressure is raised to 1.5MPa, 6 take-off of A21W-16P safety valves；" setting " heating temperature is closed and added as 0 DEG C
Thermal control switchs, 6 take-off phenomenon of observation A21W-16P safety valves；
（10）Export experimental data；
（11）In pressure vessel 1 after liquid natural cooling, in current recovery tank 19, power supply is closed.According to experimental data
It draws pressure, the curve that temperature changes over time and carries out data analysis.
3rd, rupture disk blasting experiment：
（1）Filling water in water tank 19；
（2）The back-water valve (BWV) 23 at clarified water pump 16 is closed, opens 8 front end of injection ball valve 15 and ultrasonic level gage below container
Ball valve；
（3）Computer input experiment member is opened, then clicks on " experimental implementation interface "；
（4）Clarified water pump 16 " startup " button is clicked on, the current liquid level of observation ultrasonic level gage 8 reaches tank fill level
Appropriate position（At liquid level gauge registration " 30 "）；
（5）It after liquid level reaches liquid level needed for experiment, clicks on " stopping ", closes injection ball valve 15 and ultrasonic wave below container
8 front end ball valve of liquid level gauge.Right arch band groove profile rupture disk, antiarch band groove profile rupture disk, inverted arch slit type bursting disc, tablet band are installed
Any one in groove profile rupture disk, with the antiarch band groove profile rupture disk of burst pressure 2.2Mpa models YC25-2.2-200A/ZH
Exemplified by, this rupture disk 4 is installed, is opened except any one at this rupture disk, in its excess-three explosion ball valve 11 is used as emptying,
Close other explosion ball valves 11；
（6）Solenoid valve 7 is closed, " setting " its aperture is 0（Error is had, 0 ~ 0.5 is all defaulted as closing）；
（7）All valves at closed safe valve 6, unlatching antiarch are used as with the explosion ball valve 11 at groove profile rupture disk 4 and let out
Passage is put, " setting " heating temperature heats liquid as 110 DEG C；
（8）When temperature reaches 100 DEG C, the explosion ball valve 11 as emptying at rupture disk 4 is closed, forms container closed
Space, " setting " heating temperature is 200 DEG C, pressure rise；
（9）When pressure is raised to 1.6MPa or so, as 250 DEG C, pressure accelerates " setting " heating temperature.When pressure liter
During to 2.2MPa, 4 blasting phenomena of rupture disk is observed in 4 explosion of antiarch band groove profile rupture disk；
（10）" setting " heating temperature closes computer heating control switch as 0 DEG C；
（11）Export experimental data；
（12）In pressure vessel 1 after liquid natural cooling, in current recovery tank 19, power supply is closed.According to experimental data
It draws pressure, the curve that temperature changes over time and carries out data analysis.
The present invention provides superheated liquid overpressure relief test experimental bed and is used exclusively for research BLEVE phenomenons and safety valve
6, the experimental provision of 4 grade safety relief devices of rupture disk work phenomenon and mechanism can simulate and fill overheat liquefied gas or overheat
The high-pressure bottle of water, after suddenly the rupture of certain size occurs for wall, superheated liquid can explosive boiling in container.By grinding
Study carefully the occurrence condition of BLEVE phenomenons, conclude the operating mode rule that BLEVE phenomenons occur, for solving to carry out the prevention of such accident
Work reduces BLEVE accident rates, solves the problems, such as that BLEVE phenomenons occur due to leakage for in-service container.
Claims (9)
1. a kind of superheated liquid overpressure relief experimental provision, it is characterised in that：This superheated liquid overpressure relief experimental provision bag
Include pressure vessel（1）, operation console（20）, data collecting system, computer control system, pressure vessel（1）Inside, which is equipped with, to be added
Thermode（3）, pressure vessel（1）Injection ball valve is provided at low head（15）With emptying ball valve（14）, ultrasonic level gage（8）
And magnetic float liquidlevel meter（2）It takes over and is symmetricly set on pressure vessel（1）Both sides；Pressure vessel（1）Top is equipped with data acquisition
The temperature sensor of system（9）, pressure transmitter（10）, thermometer（12）, pressure gauge（13）, pressure vessel（1）Also pacify lower part
Temperature sensor equipped with data collecting system（9）, pressure transmitter（10）, thermometer（12）, pressure gauge（13）；Pressure vessel
（1）Upper cover is taken over there are three setting（21）, taking over for center take over for solenoid valve, and each of both sides takes over and respectively branch out four
Branch tube（22）, one side branch tube（22）Four groups of pressure relief ball valves are installed（18）It is combined the unit with safety valve, opposite side branch
It takes over（22）Four groups of explosion ball valves are installed（11）It is combined the unit with rupture disk, solenoid valve takes over installation electromagnetism valve base, by electromagnetism
Four connecting rods that valve base horizontally outward extends are connected with solenoid valve valve head, are driven between solenoid valve valve head and valve seat by drive shaft
It is dynamic；Operation console（20）Inside it is provided with clarified water pump（16）And water tank（19）, water tank（19）Connect clarified water pump（16）, clarified water pump（16）Even
Connect pressure vessel（1）Injection ball valve（15）；Temperature sensor（9）, pressure transmitter（10）, ultrasonic level gage（8）It is logical
It crosses data transmission cable to be connected in data acquisition device on corresponding controller, solenoid valve valve head picks out data transmission cable and is connected to
In corresponding controllers in data acquisition device；Each controller connects computer control system, heats electrode（3）Connect temperature control
Device, clarified water pump（16）It is connected with computer control system.
2. superheated liquid overpressure relief experimental provision according to claim 1, it is characterised in that：The pressure vessel
（1）The one side of installation rupture disk combination unit is provided with video camera（24）, video camera（24）Mounted on camera pedestal（25）On, it takes the photograph
Camera（24）With rupture disk combination unit substantially on the sustained height away from ground.
3. superheated liquid overpressure relief experimental provision according to claim 2, it is characterised in that：The pressure vessel
（1）The temperature sensor of the data collecting system on top（9）, pressure transmitter（10）, thermometer（12）, pressure gauge（13）Installation
Mode is：Temperature sensor（9）, pressure transmitter（10）Mounted on pressure vessel（1）One side, thermometer（12）, pressure gauge
（13）It is symmetrically mounted on pressure vessel（1）Opposite side, install pressure gauge（13）And thermometer（12）Take over pressure hold
Device（1）Cross-sectional direction has 30 ° of angles；Pressure vessel（1）The temperature sensor of the data collecting system of lower part（9）, pressure become
Send device（10）, thermometer（12）, pressure gauge（13）Mounting means is：Temperature sensor（9）, pressure transmitter（10）Mounted on pressure
Force container（1）One side, thermometer（12）, pressure gauge（13）It is symmetrically mounted on pressure vessel（1）Opposite side, install pressure gauge
（13）And thermometer（12）Take over also with pressure vessel（1）Cross-sectional direction has 30 ° of angles.
4. superheated liquid overpressure relief experimental provision according to claim 3, it is characterised in that：The supersonic liquid level
Meter（8）And magnetic float liquidlevel meter（2）The axis and pressure transmitter taken over（10）And temperature sensor（9）The axis taken over is in
90 ° of angles.
5. superheated liquid overpressure relief experimental provision according to claim 4, it is characterised in that：The rupture disk combination
Device is by rupture disk clamper（5）And rupture disk（4）It forms.
6. superheated liquid overpressure relief experimental provision according to claim 5, it is characterised in that：The solenoid valve valve head
Connecting rod between valve seat is high-strength steel hexagonal prisms connecting rod, the long 20cm of connecting rod.
7. superheated liquid overpressure relief experimental provision according to claim 6, it is characterised in that：The pressure transmitter
（10）With pressure vessel（1）It is connected by the hollow high strength steel pipe of helical structure.
8. superheated liquid overpressure relief experimental provision according to claim 7, it is characterised in that：The superheated liquid surpasses
Press the method that experimental provision carries out BLEVE experiments of releasing：
S1, water tank（19）In fill water；
S2, clarified water pump is closed（16）The back-water valve (BWV) at place（23）, open pressure vessel（1）Ball valve is injected in lower section（15）And ultrasonic solution
Position meter（8）Front end ball valve；
S3, computer input experiment member is opened, then clicks on " experimental implementation interface "；
S4, clarified water pump is clicked on（16）" startup " button observes ultrasonic level gage（8）Current liquid level, makes pressure vessel（1）Liquid
Position reaches appropriate position, ultrasonic level gage（8）At registration " 30 "；
S5, when liquid level reach experiment needed for liquid level after, click on " stoppings ", closing pressure vessel（1）Ball valve is injected in lower section（15）With
Ultrasonic level gage（8）Front end ball valve opens rupture disk（4）Locate four explosion ball valves（11）In an explosion ball valve（11）Make
For emptying, its excess-three explosion ball valve is closed（11）；
S6, solenoid valve is closed（7）, " setting " its aperture is 0；
S7, arbitrary safety valve all the way is opened（6）The pressure relief ball valve at place（18）As leakage path, " setting " heating temperature is 110
DEG C, liquid is heated；
S8, when temperature reaches 100 DEG C, close rupture disk（4）Locate the explosion ball valve as emptying（11）, make pressure vessel（1）
Confined space is formed, " setting " heating temperature is 200 DEG C, pressure rise；
S9, when pressure is raised to 1.2MPa or so, " setting " heating temperature as 0 DEG C, close heating electrode（3）Control switch；
S10, solenoid valve is opened（7）, its aperture is adjusted to 100%, with simulated leakage point, observation bleeder action situation and
BLEVE phenomenons；
S11, export experimental data；
S12, pressure vessel is treated（1）After interior liquid natural cooling, current recovery tank（19）It is interior, power supply is closed, according to experiment number
According to drawing curve that pressure, temperature change over time and carry out data analysis.
9. superheated liquid overpressure relief experimental provision according to claim 7, it is characterised in that：The superheated liquid surpasses
Press the method that experimental provision carries out discharge of safety valve experiment of releasing：
S1, water tank（19）In fill water；
S2, clarified water pump is closed（16）The back-water valve (BWV) at place（23）, open pressure vessel（1）Ball valve is injected in lower section（15）And ultrasonic solution
Position meter（8）Front end ball valve；
S3, computer input experiment member is opened, then clicks on " experimental implementation interface "；
S4, clarified water pump is clicked on（16）" startup " button observes ultrasonic level gage（8）Current liquid level, makes pressure vessel（1）Liquid
Position reaches appropriate position, ultrasonic level gage（8）At registration " 30 "；
S5, when liquid level reach experiment needed for liquid level after, click on " stoppings ", closing pressure vessel（1）Ball valve is injected in lower section（15）With
Ultrasonic level gage（8）Front end ball valve opens rupture disk（4）Locate four explosion ball valves（11）In an explosion ball valve（11）Make
For emptying, its excess-three explosion ball valve is closed（11）；
S6, solenoid valve is closed（7）, " setting " its aperture is 0；
S7, A21W-16P, A21Y-25P, A27W-16P, A28H/Y-16C this 4 kinds of safety valves are opened arbitrarily all the way, with take-off pressure
Exemplified by power is the A21W-16P safety valve of 1.5MPa, this safety valve is opened（6）The pressure relief ball valve at place（18）As leakage path, close
Close its excess-three safety valve（6）The pressure relief ball valve at place（18）, " setting " heating temperature heats liquid as 110 DEG C；
S8, when temperature reaches 100 DEG C, close rupture disk（4）Locate the explosion ball valve as emptying（11）, make pressure vessel（1）
Confined space is formed, " setting " heating temperature is 200 DEG C, pressure rise；
S9, when pressure is raised to 1.5MPa, A21W-16P safety valve jumping ups；" setting " heating temperature closes computer heating control as 0 DEG C
Switch observes A21W-16P safety valve jumping up phenomenons；
S10, export experimental data；
S11, pressure vessel（1）After interior liquid natural cooling, current recovery tank（19）It is interior, power supply is closed, according to experimental data
It draws pressure, the curve that temperature changes over time and carries out data analysis.
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| CN108801669B (en) * | 2018-09-12 | 2024-03-26 | 南京工业大学 | Experimental device and testing method for BLEVE rule of fire induced high-pressure storage tank |
| CN109060399B (en) * | 2018-09-12 | 2024-03-01 | 南京工业大学 | Experimental system and method for inducing cold BLEVE of high-pressure storage tank by leakage |
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| DE10156495C1 (en) * | 2001-11-16 | 2003-01-02 | Framatome Anp Gmbh | Device for cooling reactor pressure vessel of boiling water reactor comprises differential pressure measuring tube with sides arranged outside of pressure vessel |
| KR100909443B1 (en) * | 2008-11-24 | 2009-07-30 | 한국수력원자력 주식회사 | Test apparatus and method for safety valve |
| CN101881714A (en) * | 2009-05-07 | 2010-11-10 | 刘小成 | Gas cylinder test device by using variable-volume external measuring method |
| CN101620023A (en) * | 2009-08-13 | 2010-01-06 | 鲁锋 | Valve detecting system |
| CN104297424B (en) * | 2014-09-25 | 2016-09-07 | 中国石油化工股份有限公司青岛安全工程研究院 | LNG leaks water curtain Inhibition test method |
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Effective date of registration: 20191213 Address after: 314200 building 3, liangchuang center, No.211, Jufu West Road, Jufu village, dushangang Town, Pinghu City, Jiaxing City, Zhejiang Province Patentee after: Jiaxing Junbo Pml Precision Mechanism Ltd Address before: 163319 No. 199, development road, hi tech Development Zone, Heilongjiang, Daqing Patentee before: Northeast Petroleum University |
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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. |
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