CN110406831A - A kind of combined type fluid-tight detonation seal of storage tank gas-liquid equilibrium system - Google Patents
A kind of combined type fluid-tight detonation seal of storage tank gas-liquid equilibrium system Download PDFInfo
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- CN110406831A CN110406831A CN201910696988.2A CN201910696988A CN110406831A CN 110406831 A CN110406831 A CN 110406831A CN 201910696988 A CN201910696988 A CN 201910696988A CN 110406831 A CN110406831 A CN 110406831A
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- 238000003860 storage Methods 0.000 title claims abstract description 76
- 239000007788 liquid Substances 0.000 title claims abstract description 65
- 238000005474 detonation Methods 0.000 title claims abstract description 53
- 239000007921 spray Substances 0.000 claims abstract description 20
- 238000013461 design Methods 0.000 claims description 7
- 238000005336 cracking Methods 0.000 claims description 4
- 238000004880 explosion Methods 0.000 abstract description 17
- 238000002485 combustion reaction Methods 0.000 abstract description 6
- 238000011105 stabilization Methods 0.000 abstract description 4
- 230000006641 stabilisation Effects 0.000 abstract description 3
- 230000003044 adaptive effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 48
- 239000012071 phase Substances 0.000 description 17
- 230000002265 prevention Effects 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 230000035939 shock Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 238000013016 damping Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000012855 volatile organic compound Substances 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
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- 238000010521 absorption reaction Methods 0.000 description 2
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- 239000002737 fuel gas Substances 0.000 description 2
- 239000007792 gaseous phase Substances 0.000 description 2
- 238000003197 gene knockdown Methods 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000004200 deflagration Methods 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C4/00—Flame traps allowing passage of gas but not of flame or explosion wave
- A62C4/02—Flame traps allowing passage of gas but not of flame or explosion wave in gas-pipes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/22—Safety features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/22—Safety features
- B65D90/32—Arrangements for preventing, or minimising the effect of, excessive or insufficient pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/48—Arrangements of indicating or measuring devices
Abstract
The present invention relates to a kind of fluid-tight fire arrester of storage tank gas phase more particularly to it is a kind of have gas-liquid equilibrium, active explosion arrestment, passive type explosion arrestment, releasing pressure automatically function in one combined type fluid-tight detonation seal.By its tank interior exhaust pipe, return tracheae (dome), air pipe lower end be arranged different height hydraulic layer, realize adaptive gas-liquid equilibrium, vacuum protection and the function of pressure release；It is the function that power realizes passive type explosion arrestment using explosion wave by two band groove valve discs being arranged in its tank interior；By the chain setting of quck-opening valve, tank interior spray head in flame detector on storage tank gas phase pipeline, input duct, the function of active explosion arrestment is realized；The characteristic of combined type fluid-tight detonation seal lower resistance drop is particularly suitable for atmospheric storage tank gas-liquid equilibrium system, is capable of providing comprehensive detonation, stabilization and non-steady detonation protection, has anti-sustained combustion.
Description
Technical field
The present invention relates to a kind of fluid-tight fire arresters of storage tank gas phase more particularly to one kind to have gas-liquid equilibrium, master
Dynamic formula explosion arrestment, passive type explosion arrestment, releasing pressure automatically function are in the combined type fluid-tight detonation seal of one.
Background technique
" volatile organic matter uncontrollable discharge controls standard " (GB37822-2019) expressly provides that storage volatility is organic
The fixed tank of liquid should use gas-liquid equilibrium system.Storage tank gas-liquid equilibrium system can effectively reduce storage tank volatile organic matter
(VOCs) discharge amount is conducive to administer storage tank VOCs centralized recovery.When the storage tank in tank field is linked to be one by gas phase exhaust pipe
After a entirety, security emphasis is to prevent from the tank farm of tank field from firing the quick-fried major accident of group to occur.China Petrochemical Corporation
Corporate security Supervision Bureau implements " petrochemical enterprise Storage Tank tank deck oil gas connection safety specifications in publication in 2018
(tentative) " [Sinopec pacifies skill (2018) 33], this article is most neat to storage tank gas-liquid equilibrium system security technology requirement at present
Complete, pipeline detonation type fire arrester, important requirement pipeline stable state detonation should all be arranged by being distinctly claimed each storage tank head space gas phase branch line
The installation of type fire arrester should avoid unstable state detonation position.Actual conditions are unstable state detonation positions by pipe net arrangement, incendiary source
The many factors such as distribution, explosion gas component, blast characteristics influence, and can not almost determine installation site without test assessment.
The building standard of stable state detonation type fire arrester is lower than unstable state detonation type fire arrester, and global most area only approves that unstable state is quick-fried
Hong type fire arrester, such as " United States Coasts Guard's standard " regulation only allow using all confirmation can under stabilization and unsteady detonation
The unstable state detonation type fire arrester leaned on.Since the price of unstable state detonation type fire arrester valuableness causes it not apply widely,
Currently, the fire arrester installed on state's inner storage tank gas phase connection branch pipeline is all stable state detonation type fire arrester, can not prevent non-steady
State detonation, there is security risks.
Normal pressure (micro- internal pressure) tank designs pressure is mostly -500Pa~+2000Pa, along with pressure is arranged in each safety attachment
It is not overlapped, therefore leads to that storage tank gas-liquid equilibrium system working pressure is low and gas-liquid equilibrium pressure range is relatively narrow.Flame arrester for pipe pressure
It drops excessive, storage tank gas-liquid equilibrium system can be made to be unable to run, therefore, is distinctly claimed in Sinopec peace (2018) No. 33 texts of skill
The flame arrester for pipe pressure drop on line that is connected of each storage tank head space gas should not exceed 300Pa.
Fluid-tight fire arrester is using liquid as back-fire relief medium, now widely used Safety water seal, using water as back-fire relief medium,
To prevent external flame from scurrying into or flame prevented to extend between the equipment and pipeline for having Fire explosion danger.Open type safety
Water seal is suitable for the lower fuel gas system of pressure, is mainly made of tank body, air inlet pipe, escape pipe and air pipe, air inlet pipe
It is deeper than air pipe insertion water surface depth to be inserted into water surface depth, when normal work, fuel gas passes through air inlet pipe lower end water layer ease
It out in tank body, then flows out from the escape pipe on tank body top, at this time gas pressure balancing in the closing water column in air pipe and tank；
When fire occurs for gas side out, since air inlet pipe insertion liquid level is deeper, the steam water interface that flame and pressure wave generate passes through first
The lower air pipe of installation site is released in atmosphere, and the water column in air inlet pipe, which is pressurized, rises the air inlet that blocking flame enters tank body
Side.Open type Safety water seal can only take precautions against limited deflagration fire situation since air inlet pipe insertion water depth is limited, once hair
When raw steady detonation or unsteady detonation fire, in pipeline ignition volume of mixture sharply expand cause it is unburned in front of it
Mixture is compressed in advance, and flame front is accelerated to form high-pressure shocking wave with the raising of combustion rate, and the shock wave is close to flame
It will form air column when passing through water seal in front of cutting edge of a knife or a sword, lose Fire retardance so as to cause open type Safety water seal.
Summary of the invention
The object of the present invention is to provide one kind to have gas-liquid equilibrium, anti-stabilization and unsteady detonation, lower resistance drop, low cost
Combined type fluid-tight detonation seal.
The technical solution that the present invention takes is specific as follows.
A kind of combined type fluid-tight detonation seal of storage tank gas-liquid equilibrium system, including tank body, horizontal baffle, overflow plate, row
Tracheae, escape pipe, air pipe, inlet tube, outlet tube, the first valve disc, returns tracheae, dome, the second valve disc at air inlet pipe；In tank body
Tank body is divided into two independent spaces, upper space up and down by the horizontal baffle in portion air inlet pipe, air pipe, inlet tube, circle
Cover, lower space have overflow plate, escape pipe, outlet tube；Perpendicular through horizontal baffle exhaust pipe, return tracheae by upper and lower two solely
Vertical space connection；The tube hub of air inlet pipe and exhaust pipe is vertically opposite and interval setting, the first valve disc are located at air inlet pipe and exhaust
Between pipe, and the first valve disc is fitted to be: under normality, the first valve disc between air inlet pipe and exhaust pipe and between the two every setting
Set, when any side of the first valve disc is by external impacts its can it is mobile to impact direction and block on its moving direction into
On tracheae or exhaust pipe；It returns tracheae upper end and is higher by air pipe tube top, return upper tracheal and be cased with dome；Return tracheae lower end and escape pipe
Tube hub is vertically opposite and interval setting, the second valve disc, which is located at, to be returned between tracheae and escape pipe, and the second valve disc is fitted to be:
Under normality, the second valve disc be located at return between tracheae and escape pipe and between the two every setting, when any side of the second valve disc is by outer
It being capable of and closure returning tracheae or escape pipe on its moving direction mobile to impact direction when power is impacted；The overflow plate
Upper end is higher than the lower end of exhaust pipe；Dome, which covers, to be returned outside upper tracheal, and dome lower end is lower than exhaust pipe upper end；Air pipe lower end is low
In dome lower end
First spray head and second spray head are equipped in the tank body upper space, the first spray head is mounted in dome, institute
It states first spray head and second spray head is connected to inlet tube and pipeline is equipped with the first quck-opening valve, first quck-opening valve is normally closed
Valve；The outlet tube is equipped with the second quck-opening valve, and second quck-opening valve is normally open valve, and first quck-opening valve and second is opened fastly
Valve is connected with controller；First flame detector is mounted on external feed stream pipeline, the second flame detector installation
On external outlet pipe, first flame detector and the second flame detector are connected with controller, when the first flame
When detector or the second flame detector detect fire signal, controller the first quck-opening valve of control is opened and controls second to be opened fastly
Valve is closed.
The first guide rod and the first retaining spring are equipped between the air inlet pipe and exhaust pipe, the first guide rod is along vertical side
To being fixed between air inlet pipe and exhaust pipe, first valve disc is set on the first guide rod and sets along the sliding of the first guide rod
It sets, first retaining spring is supported on the lower end of the first valve disc.
The two sides up and down of first valve disc are respectively equipped with the groove to match with air inlet pipe and exhaust pipe nozzle.
Described return is equipped with the second guide rod and the second retaining spring between tracheae and escape pipe, the second guide rod is along vertical side
It is returned between tracheae and escape pipe to being fixed on, second valve disc is set on the second guide rod and sets along the sliding of the second guide rod
It sets, second retaining spring is supported on the lower end of the second valve disc.
The two sides up and down of second valve disc are respectively equipped with and return the groove that tracheae and escape pipe nozzle match.
An overflow plate is vertically arranged in the lower space, the outlet tube and exhaust pipe are located at the two of overflow plate
Side, the outlet tube are located at the bottom of lower space.
Pressure of the exhaust pipe lower end lower than the formed hydraulic layer A in part of overflow plate upper end is less than the exhalation of storage tank breather valve and opens
Open pressure value.
Pressure of the dome lower end lower than the formed hydraulic layer B in part of exhaust pipe upper end is less than the sucking of storage tank breather valve and opens
The absolute value of pressure.
Pressure of the air pipe lower end lower than the formed hydraulic layer C in part of exhaust pipe upper end is less than tank designs pressure negative pressure
The absolute value of value.
The technical effect that the present invention obtains are as follows:
1, the present invention integrates gas-liquid equilibrium, active explosion arrestment, passive explosion arrestment, releasing pressure automatically function, lower resistance drop
Characteristic is particularly suitable for atmospheric storage tank gas-liquid equilibrium system, is capable of providing comprehensive detonation, stabilization and non-steady detonation protection, resists
Sustained combustion performance is excellent；
2, the present invention realizes the gas and oil equilibration between gas phase connection storage tank by two built-in different height liquid layers, reduces
Storage tank breather valve opening times, to considerably reduce storage tank VOCs discharge amount and air imbibed quantity；Its air pipe tube bottom liquid
Layer setting can releasing pressure automatically in case of fire, moreover it is possible to prevent storage tank vacuum degree from breaking through design value, increase storage tank safety
It can ensure；
3, the active device of blast prevention of present invention setting flame detector and quck-opening valve linkage, can be when fire occurs first
Between automatic filling back-fire relief liquid improve its explosion arrestment extinguishing property and anti-sustained combustion performance, barrier flame is climing along storage tank gas phase exhaust pipe
Prolong to other storage tanks；Every combined type fluid-tight detonation seal active device of blast prevention on storage tank gas phase connected system is subjected to concentration company
Fire occurs for lock control, a storage tank, and the combined type fluid-tight detonation seal active device of blast prevention of other associated reservoirs is switched on filling
Back-fire relief liquid cuts off storage tank gas phase connected system using back-fire relief liquid, greatly improves entire tank group security protection performance；
4, the passive device of blast prevention of the present invention by disengaging gas tube orifice valve disc and retaining spring form, the present invention will explode
Shock wave orients vertical impact reeded valve disc up and down, closes combined type fluid-tight explosion arrestment rapidly using groove cumulative action
The disengaging gas tube orifice of device, while shock wave entirety adverse current damping decaying under valve disc and retaining spring collective effect, back-fire relief liquid
It absorbs flame heat regulating vaporization knock down the flame and passes through air pipe pressure release.Its shock wave damping having decaying, fire extinguishing and pressure release are comprehensive
Closing performance is that existing passive device of blast prevention is unexistent；
5, the gapless that the distinctive hydraulic seal of combined type fluid-tight detonation seal is combined with mechanical seal, can effectively prevent gas
Body and flame transmission；
6, active device of blast prevention of the present invention and passive device of blast prevention are failure to actuate in normal conditions, to gas in pipelines
The resistance of flowing is almost nil；The hydraulic layer effect of storage tank gas-liquid equilibrium system is to seal stable storage tank gaseous pressure, function up for safekeeping
It is equivalent to storage tank breather valve；Exhaust pipe and return air tubing length be equivalent to storage tank gas-liquid equilibrium system pipeline equivalent length it is micro- its
It is micro-, the far super industrial fire arrester of lower resistance drop characteristic.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
In figure: arrow indicates medium flow direction；Heavy line indicates equipment and pipeline；Dotted line indicates instrument signal line.
Specific embodiment
In order to which objects and advantages of the present invention are more clearly understood, the present invention is carried out specifically with reference to embodiments
It is bright.It should be appreciated that following text is only used to describe one or more of specific embodiments of the invention, not to the present invention
The protection scope specifically requested carries out considered critical.
Normal pressure (micro- internal pressure) storage tank is provided with breather valve greatly all in accordance with codes and standards, for maintaining atmospheric storage tank to press in design
Safe operation in force value (- 500Pa~+2000Pa).Storage tank gas-liquid equilibrium system main purpose is real using tank inside oil gas
Gas-liquid equilibrium between existing storage tank, reduces breather valve opening times, reduces storage tank VOCs discharge amount or air imbibed quantity, therefore store up
Tank gas-liquid equilibrium system gaseous pressure range of balance needs to control within the scope of breathing valve opening pressure.The present embodiment is to be configured with
(sucking air cracking pressure -295Pa, exhalation oil gas open pressure to D grades of breather valves in " petroleum storage tank attachment " SY/T0511.1 standard
Power+1375Pa) atmospheric storage tank for illustrate, in SY/T0511.1 standard provide breather valve setting cracking pressure and breather valve return
Seat, which closes pressure, 15% pressure difference, therefore storage tank gas-liquid equilibrium system gaseous pressure range of balance preferably sets with breather valve and opens
Pressure has 20% pressure difference, i.e., carries out the gas between storage tank using atmospheric storage tank oil gas in -236Pa~+1100Pa pressure limit
It balances each other.
A kind of combined type fluid-tight detonation seal of storage tank gas-liquid equilibrium system by tank body 1, horizontal baffle 2, exhaust pipe 3, overflow
Flowing plate 4, air inlet pipe 5, escape pipe 6, air pipe 7, inlet tube 8, outlet tube 9, the first guide rod 10, the first valve disc 11, first are fixed
Position spring 12 returns tracheae 13, bubble-cap 14, the second guide rod 15, the second valve disc 16, the second retaining spring 17, first spray head 18, the
Two spray heads 19, the first flame detector 20, the second flame detector 21, controller 22, the first quck-opening valve 23, the second quck-opening valve 24
It constitutes.Tank body 1 is divided into two independent spaces up and down by the horizontal baffle 2 at the middle part of tank body 1, and upper space has air inlet pipe 5, big
Tracheae 7, inlet tube 8, bubble-cap 14, first spray head 18, second spray head 19, lower space have overflow plate 4, escape pipe 6, outlet tube 9,
Overflow plate 4 is vertically mounted on 1 bottom plate of tank body；Perpendicular through horizontal baffle 2 exhaust pipe 3, return tracheae 13 by upper and lower two solely
Vertical space connection；Air inlet pipe 5 and the tube hub of exhaust pipe 3 are vertically opposite, and the first vertically fixed guide rod is equipped between two pipes
10, the first guide rod 10 is cased with the first valve disc 11, the first retaining spring 12, and the first retaining spring 12 is located at 11 lower section of the first valve disc
The first valve disc 11 is used to support between air inlet pipe 5 and exhaust pipe 3, the first about 11 valve disc is all provided with fluted.Return tracheae 13
Upper end is higher by 7 tube top of air pipe, returns 13 top of tracheae and is cased with dome 14, is equipped with first spray head 18 in dome 14；It returns under tracheae 13
End is vertically opposite with the tube hub of escape pipe 6, and the second vertically fixed guide rod 15, the second 15 sets of guide rod are equipped between two pipes
There are the second valve disc 16, the second retaining spring 17, the second retaining spring 17, which is located at below the second valve disc 16, is used to support the second valve disc
16 positioned at returning between tracheae 13 and escape pipe 6, and the second about 16 valve disc is all provided with fluted.The admission line being connected with air inlet pipe 5
On the first flame detector 20 is installed, the second flame detector 21 is installed on the outlet pipe being connected with escape pipe 6, install
First spray head 18, second spray head 19 on 1 top plate of tank body have pipeline to be connected with back-fire relief liquid input duct respectively, connecting pipe
On the first quck-opening valve 23 is installed, the second quck-opening valve 24 is installed in the liquid outlet pipe being connected with outlet tube 9；First flame detecting
The instrument signal of device 20 and the second flame detector 21 into controller 22,22 output signal of controller respectively with the first quck-opening valve
23, the second quck-opening valve 24 is connected.
Under normal operating conditions, back-fire relief liquid enters 1 upper space of tank body from inlet tube 8, and back-fire relief liquid goes up to exhaust pipe 3
It by 3 overflow of exhaust pipe to 1 lower space of tank body at end, then covers overflow plate 4 and tank body 1 is flowed out by outlet tube 9, back-fire relief liquid exists
Two highly stable liquid layers up and down are formed in tank body 1.3 lower end of exhaust pipe is lower than 4 upper end of overflow plate, at 3 lower end of exhaust pipe
Hydraulic layer A is formed, the height of liquid layer value of hydraulic layer A is set as 1100Pa；14 sets of dome are being returned outside 13 top of tracheae, under dome 14
End is lower than 3 upper end of exhaust pipe, and hydraulic layer B is formed at 14 lower end of dome, and the height of liquid layer value of hydraulic layer B is set as 236Pa；Greatly
7 lower end of tracheae is lower than 3 upper end of exhaust pipe, and hydraulic layer C is formed at 7 lower end of air pipe, and the height of liquid layer value of hydraulic layer C is set as
500Pa.Atmospheric storage tank oil gas enters 1 upper space of tank body from air inlet pipe 5, when 1 upper space oil-air pressure value of tank body is higher than tank
When 1 lower part oil-air pressure value 1100Pa of body, the fluid column that dome 14 and 7 lower end of air pipe are sealed up for safekeeping can rise to pressure because of oil-air pressure
Stop rising at equalization point and close oil gas, top oil gas can only enter tank body by the hydraulic layer A of 3 lower end of exhaust pipe at this time
Tank body 1 is discharged from escape pipe 6 in 1 lower space.When 1 lower part oil-air pressure value of tank body is higher than 1 top oil-air pressure value of tank body
When 236Pa, 1 lower part oil gas of tank body is gathered in dome 14 by returning tracheae 13, and the fluid column that 3 lower end of exhaust pipe is sealed up for safekeeping can be because of oil gas
Pressure, which rises at pressure balance point, to be stopped rising and closes lower part oil gas, and lower part oil gas can only be by breaking through dome 14 at this time
The hydraulic layer B of lower end enters 1 upper space of tank body, and tank body 1 is discharged from air inlet pipe 5.When atmospheric pressure is higher than 1 upper gaseous phase of tank body
When pressure value 500Pa, air enters 1 upper space of tank body by the hydraulic layer C of 7 lower end of air pipe, and is flowed back by air inlet pipe 5
To atmospheric storage tank, prevent atmospheric storage tank vacuum degree from breaking through design value -500Pa.From the foregoing, it will be observed that about 1 gas of nominal situation lower tank
The oil gas of phase space can realize self-balancing, to guarantee the atmospheric storage tank of 1 two sides of tank body in -236Pa~+1100Pa pressure difference model
Enclose it is interior using in tank oil gas carry out gas-liquid equilibrium, while can also prevent atmospheric storage tank vacuum degree break through design value -500Pa.
When multiple atmospheric storage tank gas phases are connected to, respective fire arrester will be equipped on every atmospheric storage tank gas phase connection branch pipe
And installed as close as possible to storage tank gaseous phase outlet, fire arrester must have anti-sustained combustion performance.When occurring to dodge quick-fried inside atmospheric storage tank,
Hydrocarbon combustion gas volume increases severely and compresses the unburned oil-gas formation detonation in front in storage tank gas phase pipeline, and flame speed is with burning
The raising of rate and accelerating is raised speed by subsonic speed to velocity of sound, and flame front and pressure wave, which meet, to be generated high-pressure shocking wave and form detonation.
The active device of blast prevention workflow of combined type fluid-tight detonation seal is as follows: the first fire is equipped on its admission line
Flame detector 20 is equipped with the second flame detector 21 on its outlet pipe, once explosion wave is detected, instrument signal
It reaches controller 22 and feedback signal controls the unlatching of the first quck-opening valve 23, the second quck-opening valve 24 is closed, back-fire relief liquid is by being mounted on
First spray head 18, the ejection of second spray head 19 on 1 top plate of tank body put out the flame traveled in tank body 1, the back-fire relief liquid in tank body 1
Liquid layer rapid increase is simultaneously full of its underpart outlet pipe, until being overflowed by air pipe 7, thoroughly flame is blocked to be vented along storage tank gas phase
Pipeline spreads to other storage tanks, while can also improve combined type fluid-tight detonation seal flashback performance.It is if storage tank gas phase is connected to
Above-mentioned every combined type fluid-tight detonation seal active device of blast prevention of system carries out concentration chain control, and fire occurs for a storage tank,
The combined type fluid-tight detonation seal active device of blast prevention of its associated reservoir is switched on filling back-fire relief liquid, storage tank gas phase connected system pipeline
It is full of back-fire relief liquid in time, the entire fire-proof and explosion-proof performance of tank group can be greatly improved.
The passive device of blast prevention workflow of combined type fluid-tight detonation seal is as follows: when combined type fluid-tight detonation seal air inlet side is sent out
When calamity of lighting a fire, flame and shock wave enter in tank body 1 from air inlet pipe 5, first the first valve disc of vertical impact 11,11 edge of the first valve disc
First guide rod, 10 vertical downward movement simultaneously compresses the first retaining spring 12, and 11 lower groove of the first valve disc is covered in 3 nozzle of exhaust pipe
On close exhaust pipe 3, flame front and the shock wave whole adverse current under 12 collective effect of the first valve disc 11 and the first retaining spring
Damping detonation decays to detonation, flame and shock wave strong disturbance back-fire relief liquid layer, and the absorption flame heat regulating vaporization of back-fire relief liquid is simultaneously final
Knock down the flame.1 upper space pressure of tank body increases suddenly causes upper layer liquid level to rise, and 7 installation site of air pipe is minimum, and upper layer vapour-liquid is mixed
Conjunction object passes through air pipe 7 first and is discharged into atmosphere；Once 7 pressure release of air pipe is not in time, overbottom pressure can oppress the back-fire relief liquid in dome 14
Rise along 13 outer wall of tracheae is returned, then returned 13 inner wall of tracheae and impact the second valve disc 16 vertically downward, the second valve disc 16 is led along second
To 15 vertical downward movement of bar and the second retaining spring 17 is compressed, 16 lower groove of the second valve disc is covered to be blocked on 6 nozzle of escape pipe
Firmly escape pipe 6.When combined type fluid-tight detonation seal goes out gas side, and fire occurs, flame and shock wave enter under tank body 1 from escape pipe 6
In portion space, the second valve disc of vertical impact 16, the second valve disc 16 are detached from the second retaining spring 17 and hang down along the second guide rod 15 first
It directly moves upwards, 16 upper groove of the second valve disc, which covers to close on returning 13 nozzle of tracheae, returns tracheae 13, and flame front and shock wave exist
The lower whole adverse current damping detonation decaying of second valve disc 16 effect, at the same lower layer's liquid-vapor mixture sprung up upwards along exhaust pipe 3 it is vertical
It flings and hits the first valve disc 11, groove is covered in 5 nozzle of air inlet pipe the first valve disc 11 thereon along 10 upward vertical movement of the first guide rod
On close air inlet pipe 5, the heat of combustion gasses causes the final fray-out of flame of back-fire relief liquid its heat of vaporization absorption, liquid-vapor mixture
It is released by air pipe 7 to atmosphere.
In conclusion active device of blast prevention of the invention is a kind of monitor-type anti-explosion fire extinguishing device, storage tank gas phase is prevented take up
Exhaust pipe gas flow area, is failure to actuate in normal conditions, almost nil to the resistance of gas in pipelines flowing.Quilt
Dynamic device of blast prevention constituting parts (guide rod, valve disc and retaining spring) is mounted in tank body expansion space, does not reduce gas circulating face
It is long-pending, it is to be run using explosion wave kinetic energy, is failure to actuate under storage tank gas phase exhaust pipe gas low speeds flow operating condition,
It is very little to the resistance of gas flowing.It is used for the exhaust pipe of gas-liquid equilibrium inside combined type fluid-tight detonation seal and returns air tubing length
It is equivalent to storage tank gas-liquid equilibrium system pipeline equivalent length very little, the resistance drop of generation is only pa grade.Combined type fluid-tight of the present invention
The gapless that the distinctive hydraulic seal of detonation seal is combined with mechanical seal, can effectively prevent gas and flame transmission, low
Resistance drop characteristic, fire extinguishing explosion arrestment, the remote super existing fire arrester of releasing pressure automatically comprehensive function.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the principle of the present invention, it can also make several improvements and retouch, these improvements and modifications are also answered
It is considered as protection scope of the present invention.Structure, device and the operating method for not specifically describing and illustrating in the present invention, such as nothing
It illustrates and limits, implemented according to the conventional means of this field.
Claims (10)
1. a kind of combined type fluid-tight detonation seal of storage tank gas-liquid equilibrium system, it is characterised in that: including tank body (1), it is horizontal every
Plate (2), exhaust pipe (3), overflow plate (4), air inlet pipe (5), escape pipe (6), air pipe (7), inlet tube (8), outlet tube (9),
First valve disc (11) returns tracheae (13), dome (14), the second valve disc (16)；Horizontal baffle (2) in the middle part of tank body (1) is by tank body
(1) being divided into two independent spaces, upper space up and down has air inlet pipe (5), air pipe (7), inlet tube (8), dome (14),
Lower space has overflow plate (4), escape pipe (6), outlet tube (9)；Perpendicular through horizontal baffle (2) exhaust pipe (3), return tracheae
(13) upper and lower two separate spaces are connected to；The tube hub of air inlet pipe (5) and exhaust pipe (3) is vertically opposite and interval is arranged, the
One valve disc (11) is located between air inlet pipe (5) and exhaust pipe (3), and the first valve disc (11) is fitted to be: under normality, the first valve disc
(11) between air inlet pipe (5) and exhaust pipe (3) and between the two every setting, when any side of the first valve disc (11) is by external force
When impact its can it is mobile to impact direction and block on its moving direction air inlet pipe (5) or exhaust pipe (3) on；Return tracheae
(13) upper end is higher by air pipe (7) tube top, returns tracheae (13) top and is cased with dome (14)；Return tracheae (13) lower end and escape pipe
(6) tube hub is vertically opposite and interval is arranged, and the second valve disc (16), which is located at, to be returned between tracheae (13) and escape pipe (6), and the
Two valve discs (16) are fitted to be: under normality, the second valve disc (16) be located at return between tracheae (13) and escape pipe (6) and between the two
Every setting, when any side of the second valve disc (16) is by external impacts, it can be mobile to impact direction and blocks in its movement side
Upward returns on tracheae (13) or escape pipe (6)；Overflow plate (4) upper end is higher than the lower end of exhaust pipe (3)；Dome (14) set
It is returning outside tracheae (13) top, dome (14) lower end is lower than exhaust pipe (3) upper end；Air pipe (7) lower end is lower than under dome (14)
End.
2. the combined type fluid-tight detonation seal of storage tank gas-liquid equilibrium system according to claim 1, it is characterised in that: described
First spray head (18) and second spray head (19) are equipped in tank body (1) upper space, the first spray head (18) is mounted on dome
(14) in, the first spray head (18) and second spray head (19) are connected to inlet tube (8) and pipeline is equipped with the first quck-opening valve
(23), first quck-opening valve (23) is normally close valve；The outlet tube (9) is equipped with the second quck-opening valve (24), and described second is fast
Valve opening (24) is normally open valve, and first quck-opening valve (23) and the second quck-opening valve (24) are connected with controller (22)；Described first
Flame detector (20) is mounted on external feed stream pipeline, and second flame detector (21) is mounted on external outlet pipe
On, first flame detector (20) and the second flame detector (21) are connected with controller (22), when the first flame is visited
When survey device (20) or the second flame detector (21) detect fire signal, controller (22) controls the first quck-opening valve (23) and opens
And it controls the second quck-opening valve (24) and closes.
3. the combined type fluid-tight detonation seal of storage tank gas-liquid equilibrium system according to claim 1, it is characterised in that: described
The first guide rod (10) and the first retaining spring (12), the first guide rod (10) edge are equipped between air inlet pipe (5) and exhaust pipe (3)
Vertical direction is fixed between air inlet pipe (5) and exhaust pipe (3), and first valve disc (11) is set on the first guide rod (10)
And slide and be arranged along the first guide rod (10), first retaining spring (12) is supported on the lower end of the first valve disc (11).
4. the combined type fluid-tight detonation seal of storage tank gas-liquid equilibrium system according to claim 1, it is characterised in that: described
The two sides up and down of first valve disc (11) are respectively equipped with the groove to match with air inlet pipe (5) and exhaust pipe (3) nozzle.
5. the combined type fluid-tight detonation seal of storage tank gas-liquid equilibrium system according to claim 1, it is characterised in that: described
It returns and is equipped with the second guide rod (15) and the second retaining spring (17), the second guide rod (15) between tracheae (13) and escape pipe (6)
It is fixed on and is returned between tracheae (13) and escape pipe (6) along the vertical direction, second valve disc (16) is set in the second guide rod
(15) it slides on and along the second guide rod (15) and is arranged, second retaining spring (17) is supported under the second valve disc (16)
End.
6. the combined type fluid-tight detonation seal of storage tank gas-liquid equilibrium system according to claim 1, it is characterised in that: described
The two sides up and down of second valve disc (16) are respectively equipped with and return the groove that tracheae (13) and escape pipe (6) nozzle match.
7. the combined type fluid-tight detonation seal of storage tank gas-liquid equilibrium system according to claim 1, it is characterised in that: described
It is vertically arranged in lower space an overflow plate (4), the outlet tube (9) and exhaust pipe (3) are located at the two of overflow plate (4)
Side, the outlet tube (9) are located at the bottom of lower space.
8. the combined type fluid-tight detonation seal of storage tank gas-liquid equilibrium system according to claim 7, it is characterised in that: exhaust
It manages pressure of (3) lower end lower than the formed hydraulic layer A in part of overflow plate (4) upper end and is less than storage tank breather valve exhalation cracking pressure
Value.
9. the combined type fluid-tight detonation seal of storage tank gas-liquid equilibrium system according to claim 1, it is characterised in that: dome
(14) pressure of the lower end lower than the formed hydraulic layer B in part of exhaust pipe (3) upper end is less than storage tank breather valve sucking cracking pressure
Absolute value.
10. the combined type fluid-tight detonation seal of storage tank gas-liquid equilibrium system according to claim 1, it is characterised in that: big
Pressure of tracheae (7) lower end lower than the formed hydraulic layer C in part of exhaust pipe (3) upper end is less than tank designs pressure negative pressure value
Absolute value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910696988.2A CN110406831A (en) | 2019-07-30 | 2019-07-30 | A kind of combined type fluid-tight detonation seal of storage tank gas-liquid equilibrium system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910696988.2A CN110406831A (en) | 2019-07-30 | 2019-07-30 | A kind of combined type fluid-tight detonation seal of storage tank gas-liquid equilibrium system |
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| CN110406831A true CN110406831A (en) | 2019-11-05 |
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| CN201910696988.2A Pending CN110406831A (en) | 2019-07-30 | 2019-07-30 | A kind of combined type fluid-tight detonation seal of storage tank gas-liquid equilibrium system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111156334A (en) * | 2020-01-21 | 2020-05-15 | 成都易态科技有限公司 | Liquid seal pressure relief device and dust-containing gas treatment system and method |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA511316A (en) * | 1955-03-29 | M. Adair Keith | Two-way liquid seal trap | |
| CN201582461U (en) * | 2009-10-23 | 2010-09-15 | 中国石油化工股份有限公司 | Integrated two-way liquid sealing device |
| CN101879974A (en) * | 2010-07-26 | 2010-11-10 | 浙江省天正设计工程有限公司 | Double-layer liquid sealing constant-voltage safe environment-friendly respirator |
| CN202464526U (en) * | 2012-01-21 | 2012-10-03 | 浙江卫星石化股份有限公司 | Storage tank with liquid seal respiration valve and condensing and recycling device |
| CN102720864A (en) * | 2012-06-11 | 2012-10-10 | 陕西大唐智能仪器仪表有限公司 | Valve sheet type fuel gas overflowing differential pressure sensor |
| CN204606723U (en) * | 2015-05-04 | 2015-09-02 | 云南省建筑材料科学研究设计院 | The two-way water-gland of tank used for storing ammonia |
| CN104973358A (en) * | 2015-06-29 | 2015-10-14 | 江苏永钢集团有限公司 | Chemical tank pressure balance device |
| CN108240493A (en) * | 2018-02-01 | 2018-07-03 | 中国核电工程有限公司 | Explosion-wave-preventing Ventilating valve and the ventilating system comprising the valve |
| CN208560412U (en) * | 2018-05-25 | 2019-03-01 | 什邡市长丰化工有限公司 | A kind of device of safe storage and conveying liquid yellow phosphorus |
| CN208586290U (en) * | 2018-06-19 | 2019-03-08 | 青岛中海环境工程有限公司 | Pressure protector for anaerobic fermentation tank body |
| CN208631310U (en) * | 2018-07-24 | 2019-03-22 | 葛洲坝石油天然气工程有限公司 | With the oil storage tank of fire-extinguishing function concurrently in a kind of storage tank farm |
| CN208647686U (en) * | 2018-08-14 | 2019-03-26 | 山东杰富意振兴化工有限公司 | A kind of storage tank nitrogen seal device |
| CN210593518U (en) * | 2019-07-30 | 2020-05-22 | 安徽实华工程技术股份有限公司 | Combined type liquid seal explosion arrester for storage tank gas phase balance system |
-
2019
- 2019-07-30 CN CN201910696988.2A patent/CN110406831A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA511316A (en) * | 1955-03-29 | M. Adair Keith | Two-way liquid seal trap | |
| CN201582461U (en) * | 2009-10-23 | 2010-09-15 | 中国石油化工股份有限公司 | Integrated two-way liquid sealing device |
| CN101879974A (en) * | 2010-07-26 | 2010-11-10 | 浙江省天正设计工程有限公司 | Double-layer liquid sealing constant-voltage safe environment-friendly respirator |
| CN202464526U (en) * | 2012-01-21 | 2012-10-03 | 浙江卫星石化股份有限公司 | Storage tank with liquid seal respiration valve and condensing and recycling device |
| CN102720864A (en) * | 2012-06-11 | 2012-10-10 | 陕西大唐智能仪器仪表有限公司 | Valve sheet type fuel gas overflowing differential pressure sensor |
| CN204606723U (en) * | 2015-05-04 | 2015-09-02 | 云南省建筑材料科学研究设计院 | The two-way water-gland of tank used for storing ammonia |
| CN104973358A (en) * | 2015-06-29 | 2015-10-14 | 江苏永钢集团有限公司 | Chemical tank pressure balance device |
| CN108240493A (en) * | 2018-02-01 | 2018-07-03 | 中国核电工程有限公司 | Explosion-wave-preventing Ventilating valve and the ventilating system comprising the valve |
| CN208560412U (en) * | 2018-05-25 | 2019-03-01 | 什邡市长丰化工有限公司 | A kind of device of safe storage and conveying liquid yellow phosphorus |
| CN208586290U (en) * | 2018-06-19 | 2019-03-08 | 青岛中海环境工程有限公司 | Pressure protector for anaerobic fermentation tank body |
| CN208631310U (en) * | 2018-07-24 | 2019-03-22 | 葛洲坝石油天然气工程有限公司 | With the oil storage tank of fire-extinguishing function concurrently in a kind of storage tank farm |
| CN208647686U (en) * | 2018-08-14 | 2019-03-26 | 山东杰富意振兴化工有限公司 | A kind of storage tank nitrogen seal device |
| CN210593518U (en) * | 2019-07-30 | 2020-05-22 | 安徽实华工程技术股份有限公司 | Combined type liquid seal explosion arrester for storage tank gas phase balance system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111156334A (en) * | 2020-01-21 | 2020-05-15 | 成都易态科技有限公司 | Liquid seal pressure relief device and dust-containing gas treatment system and method |
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