CN204286958U - A kind of explosion relief door test and proving installation - Google Patents
A kind of explosion relief door test and proving installation Download PDFInfo
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- CN204286958U CN204286958U CN201420717517.8U CN201420717517U CN204286958U CN 204286958 U CN204286958 U CN 204286958U CN 201420717517 U CN201420717517 U CN 201420717517U CN 204286958 U CN204286958 U CN 204286958U
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Abstract
This application discloses the test of a kind of explosion relief door and proving installation, comprise the gentle shot room of venting of dust explosion container, a sidewall of venting of dust explosion container is explosion relief door, explosion relief door is provided with pressure transducer and alert and resourceful formula venting of dust explosion bolt; Two junctions of venting of dust explosion container and door leaf are provided with one section of air hermetic scalable hard gas explosion wall; The side that venting of dust explosion container is relative with door leaf is provided with the spark plug stretching into gas explosion room and the ignition control device be connected with spark plug.After adopting said structure, above-mentioned air hermetic scalable hard gas explosion wall energy makes door leaf be in different opening angles; Venting of dust explosion container can make gas explosion indoor airtight, by the ratio of methane in adjustment mixed gas, and the venting of dust explosion state under the various environment that energy Reality simulation occurs.The determining instruments such as pressure transducer can monitor data such as the pressure of door leaf under different opening angle and under various simulated environment and analyze, and the data gathered are timely, accurate, fiduciary level is high.
Description
Technical field
The application relates to a kind of test and proving installation, particularly a kind of explosion relief door test and proving installation.
Background technology
At mining, petrochemical complex, the special industries such as war production, need to deposit inflammable at some specific space, explosive dangerous material, these explosive dangerous material are deposited in process once blast, the shock wave produced can produce safely very big infringement to surrounding buildings and human life, in order to avoid accidental explosion does great damage to whole buildings, current common practice arranges explosion relief door in parking space region, the explosion venting devices such as explosion release window, but traditional explosion relief door, explosion release window reaction velocity is slow, belong to disposable breaking plant, pressure leak process is smooth not, effect is not ideal enough.Because explosion venting device needs to bear and resist powerful impulsive force, be often difficult to make large scale specification, both met the needs that venting of dust explosion requirement also meets personnel and goods turnover simultaneously.
Below by the concrete analysis to several prior art, so that weak point existing in prior art to be described, and technical problems to be solved in this application.
1. explosion relief door (Authorization Notice No. CN 2890288Y)
The utility application designed by inventor's Zhang Wenming, it discloses a kind of explosion relief door, this explosion door mainly comprises doorframe and door-plate, wherein, doorframe to be fixed on body of wall and to comprise upper frame body, middle framework and lower frame body, door-plate by after hinge with doorframe, upper frame body connects, form an explosion relief door, when indoor generation gas explosion, venting of dust explosion bolt ruptures instantaneously because of pressure, and then make door-plate be that fulcrum is by the extrapolated unlatching of gas explosion pressure with hinge, and when door-plate is in closed condition at ordinary times, then pass through the fit portion of doorframe upper frame body and middle framework, and being inclined upwardly and middle framework of the closing portion of door-plate, lower frame body slope, closing, to form bridging effect, and then the waterproof effect reached.
This utility model exists following not enough:
At explosion relief door by blast shock surface, its doorframe and the upper frame body comprised, middle framework, lower frame body are then fixed on body of wall, this part area accounts for the 30-40% of the face total area that is hit, and it has impact on effective release of shock wave energy, and effective open area is reduced; When being subject to blast and impacting, because open area is less, upper frame body, middle framework and lower frame body entirety certainly will be caused to be rushed open by shock wave, cause explosion relief door irrecoverability to destroy.
2. plus-minus differential pressure overpressure alarming venting door (Authorization Notice No. CN 201026430Y)
The utility application designed by inventor The No.2 Harbin Dust Demoving Apparatus Factory, it discloses a kind of plus-minus differential pressure overpressure alarming venting door, and this equipment is applicable to the safety alarm device of air strainer, dust arrester.
Above-mentioned explosion relief door be provided with one lead to outside positive pressure differential door and lead to outside Negative Pressure Difference door, two all by hinge and housing hinge, two are equipped with counterweight and travel switch.When the outer surface pressure of device is less than device internal request pressure reduction, positive pressure differential door is opened, and internal gas flow is discharged into space outerpace by screen pack, positive pressure differential door; When device internal pressure be less than to require pressure reduction outside device time Negative Pressure Difference door open, outer gas stream, by screen pack, Negative Pressure Difference door, screen pack, enters into device interior, has reached the effect of venting of dust explosion and balance external and internal pressure, and trigger alarm device is implemented to report to the police simultaneously.
This plus-minus differential pressure overpressure alarming venting door is only suitable for the venting of dust explosion window use of the low impact energy such as air strainer, fly-ash separator rank, low explosion severity, low throughput, because the venting of dust explosion passage of design is less, be unsuitable for HI high impact energy rank, high explosion severity and moment high gas flow throughput venting of dust explosion design, be more not suitable for having as dangerous material cargo storage warehouse the function that personnel and goods Vomitory use concurrently.
3. shock resistance steel venting of dust explosion rolling screen door (Authorization Notice No. CN 103225473 A)
The application for a patent for invention designed by inventor Senlin Special Steel Door Co., Ltd., Shanghai; relate to the shock resistance steel venting of dust explosion rolling screen door design of buildings gateway for depositing excessive risk harmful influence or passage; the damage that the shock wave can avoiding or weaken blast generation causes buildings, for property and personal security provide effective guarantee.
This shock resistance steel venting of dust explosion rolling screen door, mainly comprise curtain face, open-type guide rail, when being subject to blast impulse, first venting of dust explosion bolt is severed, and open-type guide rail venting of dust explosion portion rotates around hinge, presents unlatching shape, the roller shutter shop front is destroyed and is released outdoor by shock wave, plays good venting of dust explosion, decompression function.This venting of dust explosion rolling screen door simultaneously, is easy to when usually using open and close, and realizes large scale and to pass through the requirement of door.
This patent of invention exists following not enough:
(1) be subject on blast shock surface in steel venting of dust explosion rolling screen door, on it, shutter door casing and both sides open-type guide rail are fixed on body of wall, this part area accounts for the 10-20% of the face total area that is hit, it has impact on effective release of shock wave energy, when being subject to blast and impacting, because open area is less, shutter door casing and both sides open-type guide rail certainly will be caused to be rushed open by shock wave, cause explosion relief door irrecoverability to destroy.
(2) the venting of dust explosion principle of steel venting of dust explosion rolling screen door is disposable destruction venting of dust explosion, and after accident occurs, its curtain face is damaged completely, and the flue dust that blast produces and poison gas are released to space outerpace, and this works the mischief to neighboring buildings and other staff.
4. fire-extinguishing explosion relief valve (patent No. ZL 94229292.8)
The utility application designed by inventor Northeastern University, belongs to the venting of dust explosion test unit of industrial dust detonation.This testing equipment forms primarily of base, upper cover, venting of dust explosion piston and venting of dust explosion fence, its principle of work is when there is dust explosion in closed container inside, pressure wave acts on venting of dust explosion piston and to open it venting of dust explosion, simultaneously blast ejection combustion and do not fire dust, flame, be trapped in venting of dust explosion indoor by the filter medium that the inner venting of dust explosion fence of test unit is filled, flame also extinguishes because of the fire extinguishing function of cooling and filter medium.While venting of dust explosion, mechanism action open alarming device, thus alerting signal of sounding.
This utility model exists following not enough:
(1) venting of dust explosion piston is by the restriction of guide pole length, and its stroke is limited, and guide pole can be broken by the acting force acted on when explosion energy is larger on venting of dust explosion piston, destroys the integrality of whole system; Simultaneously the guide pole moving parts of internal tank, greatly limit effectively depositing of internal tank material, is therefore feasible as venting of dust explosion experimental study, and also needs as practical application perfect further.
(2) " explosion relief door " described in this utility model, be actually the venting of dust explosion piston moved along certain orientation, its venting of dust explosion trigger mechanism component number is various, motion is complicated, be not suitable for as commercial unit practice, the access door being more not suitable for dangerous goods store goods and personnel's turnover uses.
(3) this device is the test unit of industrial dust venting of dust explosion effect, is not suitable as industrialization practical application, more can not use as the storage of dangerous material goods.
The application, for above-mentioned deficiency, has carried out the improvement of pressure release antiknock to existing dangerous material goods and personnel's access door, to high-energy rank, high explosion severity and moment high gas flow throughput dangerous material there is good venting of dust explosion effect.Relative to above-mentioned prior art, the application has following benefit:
1. the explosion relief door of the application has open area greatly, and its effective open area accounts for 100% of the face total area that is hit.
2., under shock wave, the explosion relief door of the application will produce the component of left and right door capable of being opened, and venting of dust explosion is rapid; When room pressure release is complete, explosion relief door is closed automatically, prevents toxic and harmful from causing secondary injury to surrounding enviroment.
3. the application is by disposable destruction explosion relief door, is promoted to and can reuses explosion relief door, also can take into account anti-theft feature at ordinary times.Reduce enterprise operation cost, improve use effect of explosion relief door.
4. this explosion relief door is except having venting of dust explosion function, is also the passage that dangerous material goods and personnel come in and go out at ordinary times.
application content
The technical matters that the application will solve is for above-mentioned the deficiencies in the prior art, and providing a kind of explosion relief door to test and proving installation, the test of this explosion relief door and proving installation can make explosion relief door be in different angles and can carry out examination and analysb to the various parameters of the explosion relief door being in different angles when venting of dust explosion; Meanwhile, data acquisition and analysis are in time, accurately, reliably.
For solving the problems of the technologies described above, the technical scheme that the application adopts is:
A kind of explosion relief door test and proving installation, the gas explosion room comprising an airtight venting of dust explosion container and be placed in venting of dust explosion container, a sidewall of described venting of dust explosion container forms primarily of the door leaf of explosion relief door, the alert and resourceful formula venting of dust explosion bolt described door leaf being provided with pressure transducer and being connected with pressure transducer; Two junctions of described venting of dust explosion container and door leaf are provided with one section of air hermetic scalable hard gas explosion wall, and two air hermetic scalable hard gas explosion wall energys make door leaf be in different angles; One end of described door leaf is flexibly connected by spring hinge and air hermetic scalable hard gas explosion wall; Door leaf is locked with corresponding air hermetic scalable hard gas explosion wall by alert and resourceful formula venting of dust explosion bolt by the other end of described door leaf mutually; The side that described venting of dust explosion container is relative with door leaf is provided with the spark plug stretching into gas explosion room and the ignition control device be connected with spark plug.
Described venting of dust explosion container is also provided with smokeshade instrument.
Described venting of dust explosion container is also provided with combustible gas probe.
Described venting of dust explosion container is also provided with safety governor of releasing.
Described venting of dust explosion container is also provided with mixed gas entrance, and this mixed gas entrance is connected with vacuum pump and gas mixer by pipeline.
Described gas mixer is also connected with methane gas cylinder and air bottle by pipeline.
Also comprise the control center be connected with air bottle with pressure transducer, smokeshade instrument, combustible gas probe, safety governor of releasing, ignition control device, vacuum pump, gas mixer, methane gas cylinder respectively.
Described pressure transducer comprises Instantaneous Situation pressure value collector, quartz piezoelectric dynamic pressure transducer, signal modem, Instantaneous Situation registering instrument and system controller; Transient pressure changing value can be converted to electric signal by pressure transducer, by amplifying, storing, numerical analysis produce pressure-time curve.
Described ignition control device comprises spark electrode, ignition coil and high electric field pulse generator.
The ignition energy of described ignition control device is 150mJ.
After the application adopts said structure, above-mentioned air hermetic scalable hard gas explosion wall energy makes door leaf be in different opening angles; Venting of dust explosion container can make gas explosion indoor airtight, by the ratio of methane in adjustment mixed gas, and the venting of dust explosion state under the various environment that energy Reality simulation occurs.The determining instruments such as pressure transducer can monitor data such as the pressure of door leaf under different opening angle and under various simulated environment and analyze, and the data gathered are timely, accurate, fiduciary level is high.
Accompanying drawing explanation
Fig. 1 is a kind of dangerous material cargo channel of the application formula intelligence explosion relief door-positive facade structural representation outdoors;
Fig. 2 is the positive facade structural representation of a kind of dangerous material cargo channel of the application formula intelligence explosion relief door-Men Nei;
Fig. 3 is the cross-sectional view along A-A face in Fig. 2;
Fig. 4 is that in Fig. 3, force analysis figure opened by single door leaf;
Fig. 5 is the original state vertical view of pressure transducer when not being hit;
Fig. 6 is the vertical view of deformation state after pressure transducer is hit;
Fig. 7 is the elevational schematic view of pressure transducer;
Fig. 8 is the plan structure schematic diagram of alert and resourceful formula venting of dust explosion bolt;
Fig. 9 is the longitudinal profile schematic diagram that explosion relief door opens force aid system;
Figure 10 is that explosion relief door opens force aid system closure state schematic diagram;
Figure 11 is that explosion relief door opens force aid system opening schematic diagram;
Figure 12 is the structural representation of explosion relief door test and proving installation;
When Figure 13 is sharp α=0 °, clevis angle, the pressure variation measured by pressure transducer;
When Figure 14 is sharp α=15 °, clevis angle, the pressure variation measured by pressure transducer;
When Figure 15 is sharp α=30 °, clevis angle, the pressure variation measured by pressure transducer;
Figure 16 is that methane concentration is to the maximum venting of dust explosion superpressure in difference sharp clevis angle
p red, max impact;
Figure 17 is that methane concentration is to difference sharp clevis angle maximum rate of pressure rise
(dP/dt) red, max impact;
Figure 18 is different explosion venting area downforce changing trend diagrams.
Wherein have: 1. doorframe; 1-1 upper transverse frame; 1-2 doorframe column; 1-3 lower transverse frame; 2. door leaf; 3. spring hinge; 3-1. retracing spring; 3-2. hinge cantilever; 3-3. turning axle; 4. electric control lock controller; 5. pressure transducer; 5-1. first horizontal slip stopper slot; 5-2. pressure sensitive plate; 5-3. sliding wheel; 5-4. rail plate; 5-5. first horizontal rack; 5-6. alarming trigger switch; 5-7. inductor web joint; 5-8. alarming trigger switch guide groove; 6. explosion relief door opens force aid system; The telescopic pushing tow bolt of 6-1.; 6-2. goring push spring; 6-3. telescopic tube; 6-4 pedestal; 6-5. spring retainer; 7. alert and resourceful formula venting of dust explosion bolt; 7-1. venting of dust explosion bolt casing; 7-2. final gear; 7-3. second horizontal rack; 7-4. second horizontal slip limit guide groove; 7-5. keyhole; 7-6. world locking bolt; The horizontal master latch of 7-7.; 7-8. mechanical type back-moving spring; The horizontal secondary latch bolt of 7-9.; 7-10. world locking bolt slip limit guide groove; 7-11. lockset back-moving spring; 7-12. mechanical type touches spring resetting-mechanism; 7-13. driving wheel; 7-14. vertical screw thread; The horizontal locking bolt installing plate of 7-15.; 7-16. world locking bolt installing plate; 8. micro-processing enter; 9. ignition control device; 10. spark plug; 11. gas explosion rooms; 12. smokeshade instrument; 13. combustible gas probes; 14. release safety governor; 15. vacuum pumps; 16. methane gas cylinders; 17. gas mixers; 18. air bottles; 19. control centers; 20. air hermetic scalable hard gas explosion wall; 21. mixed gas entrances.
In addition, in figure, α is expressed as: when door leaf closes, the sharp clevis angle that door leaf and doorframe column place plane are;
In Fig. 4, F represents the vertical acting force of shock wave, F
1represent that shock wave is to the lateral thrust of door leaf medial surface; F
2represent that shock wave is to the axial tension of door leaf;
In Figure 12, β represents the angle that the door leaf of explosion relief door is opened.
Embodiment
Below in conjunction with accompanying drawing and concrete better embodiment, the application is described in further detail.
As shown in Figure 1, Figure 2 and Figure 3, a kind of dangerous material cargo channel formula intelligence explosion relief door, comprises doorframe 1, two door leafs that can mutually split 2, several spring hinges 3, electric control lock controller 4, pressure transducer 5, explosion relief door unlatching force aid system 6, alert and resourceful formula venting of dust explosion bolt 7 and micro-processing enter 8.
Above-mentioned door leaf 2 can be split mutually, thus when making venting of dust explosion, open area is large, and effective open area can account for 100% of the face total area that is hit, thus open and venting of dust explosion rapid.Wherein, the arrow in Fig. 3 and Fig. 6 represents the impact direction of shock wave.
Doorframe 1 comprise be arranged at two door leaf 2 tops upper transverse frame 1-1, be arranged at the lower transverse frame 1-3 bottom two door leafs 2 and be arranged at two doorframe column 1-3 outside two door leafs 2.
Each door leaf 2 comprises lateral surface, medial surface and two, left and right sidewall.Wherein, the face that is hit when medial surface is blast generation, the shape of lateral surface preferably as shown in Figure 1, is one piece of arc, neat appearance.Be preferably a hollow structure between lateral surface and medial surface, the material of some bufferings or reduction noise can be filled in hollow reservoir.The design of this structure, can reduce the weight of door leaf on the one hand, door leaf is opened more quick, on the other hand, can reduce the injury of noise to surrounding people of explosion time.As replacement, lateral surface can be also rectangle or other shape, can be also solid construction, between lateral surface and medial surface all within the protection domain of the application.
The lateral surface of each above-mentioned door leaf 2 is connected with corresponding doorframe column 1-2 by several spring hinges 3.As shown in Figure 4, each spring hinge 3 hinge cantilever 3-2 of comprising the retracing spring 3-1 be arranged on doorframe column 1-2 lateral surface, being arranged on the turning axle 3-3 on each door leaf 2 lateral surface and retracing spring 3-1 is connected with turning axle 3-3.Be subject to impact at door leaf 2 to open and after completing pressure release, door leaf 2 can under the effect of spring hinge 3, quick closedown, reduce cross-ventilation, suppress generation and the diffusion of the condition of a fire within doors.
As shown in Figure 3 and Figure 4, when two door leafs 2 close, the medial surface of each door leaf 2 and doorframe column 1-2 place plane are a sharp clevis angle α.The angle of this sharp clevis angle α is preferably 15-30 °, and optimum value is 30 °.About the select permeability of the angle value of sharp clevis angle α, be an innovation of the application, concrete analysis sees below the pressure test results of continuous explosion relief door when difference sharp clevis angle α and data analysis.
As shown in Figure 4, the setting of above-mentioned sharp clevis angle α, when blasting, shock will produce the component F of left and right door capable of being opened in the vertical directed force F of door leaf 2 medial surface
1and F
2.Wherein, F
1for the vertical directed force F of shock wave is to the lateral thrust of door leaf 2 medial surface; F
2for the vertical directed force F of shock wave is to the axial tension of door leaf 2.Under explosion relief door constraint relief state, F
1component can impel door leaf 2 to open rapidly.
Above-mentioned pressure transducer 5 is embedded on the medial surface of upper transverse frame 1-1, and pressure transducer 5 is connected by machinery with alert and resourceful formula venting of dust explosion bolt 7, is connected preferably by gear.The driving wheel 7-13 that gear comprises final gear 7-2 and coaxially arranges with final gear 7-2, final gear 7-2 can rotate under the drive of driving wheel 7-13.
Pressure transducer 5 can sense the ANOMALOUS VARIATIONS of room pressure, when pressure transducer 5 senses that room pressure raises extremely, alert and resourceful for drive formula venting of dust explosion bolt 7 is exited lockhole by pressure transducer 5, removes the locking to door leaf 2 and constraint in very short time, makes pressure leak process rapidly, fast.
As shown in Fig. 5, Fig. 6 and Fig. 7, pressure transducer 5 comprises and being embedded in upper transverse frame 1-1 medial surface and the inductor web joint 5-7 having flexible pressure sensitive plate 5-2 and be fixedly connected with pressure sensitive plate 5-2 medial surface center.This inductor web joint 5-7 is provided with the first horizontal rack 5-5 be meshed with driving wheel 7-13.
The pressure sensitive value of above-mentioned pressure sensitive plate 5-2 can regulate, thus can realize the adjustment at any time to different venting of dust explosion peak value.The pressure sensitive value of pressure sensitive plate 5-2 has the concrete regulative mode of the following two kinds.
1., by regulating the length of pressure sensitive plate 5-2, regulate the pressure sensitive value of pressure sensitive plate 5-2.The length adjustment mode of pressure sensitive plate 5-2 is: be provided with rail plate 5-4 and the sliding wheel 5-3 being positioned at rail plate 5-4 at the two ends of pressure sensitive plate 5-2.Regulate the locked position of sliding wheel 5-3, as required, the length of pressure sensitive plate 5-2 can be regulated.
By changing the elasticity model of pressure sensitive plate 5-2, regulate the pressure sensitive value of pressure sensitive plate 5-2.As being set to removably connect by between pressure sensitive plate 5-2 and doorframe 1, also can be the rail plate 5-4 of the first and the connection of sliding wheel 5-3.
By above-mentioned regulative mode, according to the requirement of maximum venting of dust explosion superpressure value, arbitrarily can adjust the pressure sensitive threshold value of pressure transducer 5, thus venting pressure induction sensitivity is adjusted, can effectively let out except room pressure, and in design pressure induction range automatic alarm, automatically open venting of dust explosion door and window, realize decompression discharge.
Above-mentioned inductor web joint 5-7 is also provided with the first horizontal slip limit guide groove 5-1, alarming trigger switch guide groove 5-8 and is positioned at the alarming trigger switch 5-6 of alarming trigger switch guide groove 5-8.First horizontal slip limit guide groove 5-1 can carry out spacing to the horizontal slip of inductor web joint 5-7.
Above-mentioned pressure sensitive plate 5-2, when not being subject to blast impulse, is in original state as shown in Figure 5.Have inflammable substance explosion time when pressure sensitive plate 5-2 experiences indoor, explosion wave will act on pressure sensitive plate 5-2.Because pressure sensitive plate 5-2 two ends are subject to the common restriction of sliding wheel 5-3 and rail plate 5-4, pressure sensitive plate 5-2 is deformed laterally, deformation state after the ripple that is hit, as shown in Figure 6.
As shown in Figure 8, above-mentioned alert and resourceful formula venting of dust explosion bolt 7 is arranged in door leaf 2, and it comprises the venting of dust explosion bolt casing 7-1 be embedded in one of them door leaf 2, all to slide the horizontal locking bolt that is arranged on venting of dust explosion bolt casing 7-1 and world locking bolt 7-6.
Horizontal locking bolt is used for mutually locking between two door leafs 2, and horizontal locking bolt comprises horizontal master latch 7-7 and horizontal secondary latch bolt 7-9.Horizontal locking bolt is slidably arranged on venting of dust explosion bolt casing 7-1 preferably by horizontal locking bolt installing plate 7-15, and horizontal locking bolt installing plate 7-15 and horizontal locking bolt are structure as a whole.One end of horizontal locking bolt installing plate 7-15 is provided with horizontal master latch 7-7 and horizontal secondary latch bolt 7-9, horizontal locking bolt installing plate 7-15(also i.e. horizontal locking bolt) the other end be provided with the second horizontal rack 7-3.Horizontal locking bolt installing plate 7-15 is also provided with and can carries out the second spacing horizontal slip limit guide groove 7-4 to its horizontal shift.
World locking bolt 7-6 is used for door leaf 2 to lock with lower transverse frame 1-3.World locking bolt 7-6 is slidably arranged on venting of dust explosion bolt casing 7-1 preferably by world locking bolt installing plate 7-16, is preferably integrative-structure.World locking bolt installing plate 7-16 is provided with and can carries out spacing world locking bolt slip limit guide groove 7-10 to its vertical displacement.World locking bolt installing plate 7-16(also i.e. world locking bolt 7-6) the side of the contiguous horizontal locking bolt installing plate 7-15 in top be provided with vertical screw thread 7-14, the bottom of world locking bolt installing plate 7-16 is provided with world locking bolt 7-6.
Venting of dust explosion bolt casing 7-1 is also provided with and can rotates and horizontal locking bolt or world locking bolt 7-6 are carried out lockset back-moving spring 7-11 and the keyhole 7-5 of locking by the final gear 7-2 that can engage mutually with the second horizontal rack 7-3 and vertical screw thread 7-14, two energy.Keyhole 7-5 can, when electric control lock controller 4 fault, utilize key to open alert and resourceful formula venting of dust explosion bolt 7.
The front end of horizontal secondary latch bolt 7-9 is provided with mechanical type reset and touches spring 7-8, and the rear end of horizontal secondary latch bolt 7-9 is provided with mechanical type and touches spring resetting-mechanism 7-12.When door leaf 2 closes, door leaf 2 reset of Crush trigger formula can touch spring 7-8, and spring 7-8 is touched in mechanical type reset makes final gear 7-2 rotate, the lockup state of giving up the throne of the horizontal master latch 7-7 of releasing and world locking bolt 7-6.
As shown in Fig. 2, Fig. 3, Figure 10 and Figure 11, in each doorframe column 1-2, be inlaid with the explosion relief door unlatching force aid system 6 that can promote door leaf 2 and open.As shown in Figure 9, each explosion relief door unlatching force aid system 6 includes the telescopic pushing tow bolt 6-1 of hollow and is fixedly installed on the goring push spring 6-2 of telescopic pushing tow bolt 6-1 inner chamber.Telescopic pushing tow bolt 6-1 is connected with one end of goring push spring 6-2, and the other end of goring push spring 6-2 is connected with spring retainer 6-5, and spring retainer 6-5 is arranged in pedestal 6-4, and pedestal is then positioned at doorframe column 1-2.Meanwhile, the top of spring retainer 6-5 is provided with telescopic tube 6-3, and this telescopic tube 6-3 is fixedly connected with telescopic pushing tow bolt 6-1, and telescopic pushing tow bolt 6-1 can only axially be moved.The top of telescopic pushing tow bolt 6-1 contacts with door leaf 2 sidewall of adjacent door column 1-2.
Doorframe 1 is also provided with micro-processing enter 8 and the electric control lock controller 4 for controller sensitive venting of dust explosion bolt 7 automatic open close.When the pressure of indoor is normal, alert and resourceful formula venting of dust explosion bolt 7 can play the effect of lock core, and the unlatching being carried out controller sensitive venting of dust explosion bolt 7 by electric control lock controller 4, with closed, plays basic anti-theft feature.
As shown in Figure 10, under normal circumstances, door leaf 2 is in closure state, and telescopic pushing tow bolt 6-1 pushes in pedestal 6-4 by door leaf 2, and now goring push spring 6-2 is in energy storage state by compression.
As shown in figure 11, when there is inflammable substance explosion time indoor, pressure sensitive plate 5-2 in pressure transducer 5 is to outdoor distortion, inductor web joint 5-7 slides to outdoor horizontal along with pressure sensitive plate 5-2, inductor web joint 5-7 drives the first horizontal rack 5-5 to move, first horizontal rack 5-5 drives again final gear 7-2 to rotate, and then drives alert and resourceful formula venting of dust explosion bolt 7 to exit lockhole, relieves the constraint of door leaf 2.
Then, explosion relief door is opened force aid system 6 and is started, and it is under the effect of goring push spring 6-2, is opened by door leaf 2 by telescopic pushing tow bolt 6-1, and at the lateral thrust F that shock wave produces
1effect under, realize the unlatching completely of door leaf 2, realize rapid venting of dust explosion effect.
Meanwhile, due to the movement of inductor web joint 5-7, thus drive contact to trigger alarming trigger switch 5-6, micro-processing enter 8 will open alarm lamp, and make electromagnetic lock auto-breaking, thus open other venting of dust explosion facility, reach venting of dust explosion object.While pressure release, micro-processing enter 8 gives the alarm to specific mechanism.
After venting of dust explosion work completes, pressure sensitive plate 5-2 automatically rebounds under self steel plate elastic reaction, sets back.Meanwhile, inductor web joint 5-7 also moves towards the direction of indoor, and drives driving wheel 7-13 direction to rotate.Driving wheel 7-13 rotates backward, and horizontal for driving locking bolt and world locking bolt 7-6 is locked by door leaf 2.
In order to the rationality of test design, make it reach best venting of dust explosion effect, for this reason, applicant establishes the test of a set of explosion relief door explosion relief door and proving installation.
A kind of explosion relief door test and proving installation, as shown in figure 12, the gas explosion room 11 comprising an airtight venting of dust explosion container and be placed in venting of dust explosion container.
The shape of above-mentioned venting of dust explosion container is preferably airtight square column type, and its length and width and high size are respectively 210*500*500mm.Venting of dust explosion container is made up of four sidewalls, and as shown in figure 12, one of them sidewall, be also right side wall, a door leaf 2 primarily of explosion relief door forms.On a sidewall relative with door leaf 2, be also that left side wall is provided with the spark plug 10 stretching into gas explosion room 11 and the ignition control device 9 be connected with spark plug 10; Ignition control device 9 comprises spark electrode, ignition coil and high electric field pulse generator, and ignition energy can reach 150mJ.The upper side wall of venting of dust explosion container is provided with smokeshade instrument 12 and combustible gas probe 13.The lower wall of venting of dust explosion container is provided with a mixed gas entrance 21 and safety governor 14 of releasing.As replacement, the setting position of spark plug 10, smokeshade instrument 12, combustible gas probe 13, mixed gas entrance 21 and safety governor 14 of releasing, can exchange according to actual needs, and the application just gives a most preferred embodiment.
One end of one end of the contiguous door leaf 2 of venting of dust explosion container upper side wall and the contiguous door leaf 2 of venting of dust explosion container lower wall has all been sealedly and fixedly connected one section of air hermetic scalable hard gas explosion wall 20.
The alert and resourceful formula venting of dust explosion bolt 7 above-mentioned door leaf 2 being provided with pressure transducer 5 and being connected with pressure transducer 5.One end of door leaf 2 is flexibly connected with the air hermetic scalable hard gas explosion wall 20 be positioned in venting of dust explosion container lower wall by spring hinge; The other end of door leaf 2 by alert and resourceful formula venting of dust explosion bolt 7 by door leaf 2 be positioned on venting of dust explosion container upper side wall air hermetic scalable hard gas explosion wall 20 phase lock.
Two above-mentioned air hermetic scalable hard gas explosion walls 20 can make door leaf 2 be in different angles.
Above-mentioned mixed gas entrance 21 is connected with vacuum pump 15 and gas mixer 17 by pipeline, gas explosion room air valve, vacuum valve and mixing air valve.Gas mixer 17 stops valve by pipeline and unidirectional time and is connected with methane gas cylinder 16 and air bottle 18.
The outside of above-mentioned venting of dust explosion container is also provided with the control center 19 be connected with air bottle 18 with pressure transducer 5, smokeshade instrument 12, combustible gas probe 13, safety governor 14 of releasing, ignition control device 9, vacuum pump 15, gas mixer 17, methane gas cylinder 16 respectively, and this control center 19 is preferably the computing machine with control program.
Above-mentioned pressure transducer 5 comprises Instantaneous Situation pressure value collector; Quartz piezoelectric dynamic pressure transducer, be preferably Iistler211 Type B, range is 0. 7MPa; Signal modem, is preferably Kistler5124 type 12 passage; Instantaneous Situation registering instrument, is preferably JV5200 type 8 passage, 10bit, sample frequency 20MHz; System controller, is preferably VXI 154 type.After pressure transducer adopts above-mentioned configuration, transient pressure changing value can be converted to electric signal, by amplifying, storing, numerical analysis produce pressure-time curve.
Utilize above-mentioned explosion relief door to test and proving installation to carry out the step of experimental implementation as follows:
(1) door leaf 2 angular setting: the door leaf 2 opening explosion relief door, cleaning gas explosion room 11, debugs each test cell and is in optimum condition, the opening angle β of adjustment door leaf 2, then is closed by door leaf 2 and good seal.
(2) mixed gas injects: the control program opening computing machine, and control program can make gas explosion room valve and vacuum valve open, and vacuum pump 15 is opened, thus is extracted out by the additional air in gas explosion room 11.Then, open methane gas cylinder 16, stop valve by unidirectional time, be filled with a certain proportion of methane gas according to test ratio to gas mixer 17, again open gas explosion room air valve, by mixed gas injected gas shot room 11.
(3) light a fire: control center 19 starting ignition control device 9, produce pulsed high-voltage, between spark plug 10 liang of electrodes, carry out effluve, produce electric spark ignite methane blended gas produce blast.When explosion pressure effect explosion relief door, realize explosion relief door stress test.
(4) pressure detection: while igniting, pressure transducer 5, smokeshade instrument 12, combustible gas probe 13 start image data, and import the data of collection into control center 19, control center 19, through process, draws explosion pressure time history plot.
(5) pressure release: when pressure transducer 5 detects that pressure reaches setting value, alert and resourceful formula venting of dust explosion bolt 7 moves back lock, and door leaf 2 is opened, and starts pressure release; Safety governor 14 of releasing also starts to monitor.
Interpretation
(1) explosion relief door door leaf 2 open angle beta and suffered impulsive force analysis
In venting of dust explosion process, arrange door leaf 2 present certain angle with blast impulse direction, as shown in figure 12, detect door leaf 2 by explosion pressure change curve, experiment adopts methane concentration to be 500g/m
3, setting explosion relief door angle is respectively 0 °, 15 °, 30 °, its operating pressure is 0.110 MPa, by the pressure-time curve relation measured by above-mentioned test procedure under different angles, respectively as shown in Figure 13, Figure 14 and Figure 15.
Drawn by data analysis in figure, door leaf 2 opening angle be 0 ° test in, pressure after methane mixed gas detonation in venting of dust explosion container 11 increases gradually, and energy is outwards propagated into door leaf 2 gradually, pressure transducer 5 pressure value is raised rapidly, when pressure reaches 0.095 MPa, door leaf 2 is opened rapidly and by fault offset, be now t=94.5 ms from detonation to the venting of dust explosion opening time, after unlatching, pressure in venting of dust explosion container 11 declines rapidly, as t=105.2 ms, venting of dust explosion superpressure value is 0 MPa, calculating shock motion distance is 500 mm, its average velocity is 250 m/s.
Relatively find that explosion relief door door leaf opening angle and its maximum venting of dust explosion over pressure of bearing have close correlativity, when explosion relief door opening angle is 0 °, maximum venting of dust explosion superpressure value is 0.095 MPa, and its opening time is t=94.5 ms; When opening angle is 15 °, maximum venting of dust explosion superpressure value is 0.071 MPa, and its opening time is t=102.4 ms; When opening angle is 30 °, maximum venting of dust explosion superpressure value is 0.052 MPa, and its opening time is t=108.8 ms.
Above-mentioned description of test explosion relief door opening angle at 0 ° within the scope of 30 °, along with the increase of explosion relief door opening angle, its maximum venting of dust explosion superpressure value is less, the impulsive force that explosion relief door bears is also less, therefore, explosion relief door arranges certain angle, when opening reaction velocity and being constant, improves the security of equipment.
(2) explosion relief door door leaf 2 open angle beta with open reaction time relation
Experiment adopts methane concentration to be 500g/m
3, setting explosion relief door angle is respectively 0 °, 15 °, 30 °, its operating pressure is 0.110 MPa, by the pressure-time curve relation measured by above-mentioned test procedure under different angles, respectively as shown in Figure 13, Figure 14 and Figure 15.
Drawn by data analysis in figure, change not remarkable at explosion relief door opening angle and unlatching reaction time.Relatively find when explosion relief door opening angle is 0 °, the opening time is t=94.5 ms, and now its maximum venting of dust explosion superpressure value is 0.095 MPa; When opening angle is 15 °, the opening time is t=102.4 ms, and now its maximum venting of dust explosion superpressure value is 0.071 MPa; When opening angle is 30 °, its opening time is t=108.8 ms, and now its maximum venting of dust explosion superpressure value is 0.052 MPa.
Above-mentioned description of test explosion relief door opening angle is at 0 ° within the scope of 30 °, and along with the increase of explosion relief door opening angle, it is not remarkable that it opens reaction time change.
(3) methane concentration in venting of dust explosion process on the impact of explosion relief door external and internal pressure
Fire at the methane of closed container and release in research, methane concentration is all a very important parameter, tests and studies with variable concentrations methane gas role in Vented explosion process.
Explosion relief door maximum venting of dust explosion superpressure value Pred, maximum rate of pressure rise (dP/dt) red, max when max and venting of dust explosion weigh tested object to the important indicator of explosion wave resistivity.Experimental study methane concentration used is respectively 300g/m3,400g/m3,500g/m3,600g/m3,700g/m3,800g/m3,900g/m3, explosion relief door opening angle is respectively 0 °, 15 °, 30 °, the maximum venting of dust explosion superpressure Pred of the monitoring explosion relief door of methane concentration to different opening angle, the impact of max, as shown in figure 16.And in the case, methane concentration to the impact of explosion relief door maximum rate of pressure rise (dP/dt) red, the max of different opening angle, as shown in figure 17.
Along with the increase of methane concentration, to the explosion relief door of different opening angle maximum venting of dust explosion superpressure value Pred, maximum rate of pressure rise (dP/dt) red when max and venting of dust explosion, max all presents the variation tendency first rising and decline afterwards, and along with the increase Pred of explosion relief door opening angle, max value and (dP/dt) red, max value are reducing gradually.This illustrates that gases at high pressure create vigorous combustion along with a large amount of air-flammable methane mixture that oneself fires, do not fire and is burning, consequent shock wave and reverse impact ripple act on reaction vessel and explosion relief door, destroy the steady state (SS) in container, create strong turbulence, and make combustion rate sharply increase, instantaneously maximum venting of dust explosion superpressure is produced to explosion relief door, destruction is produced to explosion relief door.
The angle that the unlatching of above-mentioned description of test explosion relief door is certain, can improve the resistant function of explosion relief door shock wave.
(4) different explosion relief door area and pressure variation relation
Experiment adopts methane air premixed gas, methane concentration 500 g/m
3, equipment original pressure is environmental pressure, and its operating pressure is 0.120 MPa, and setting explosion relief door area is respectively 15 × 15 cm
2, 15 × 20 cm
2, 15 × 30 cm
2, under investigating different explosion venting area situation, container inner pressure variation tendency as shown in figure 18.
In order to realize different area explosion relief door pressure change test, test unit with tested explosion relief door junction, adopt the design of the scalable stiff wall 20 of air hermetic, can according to the size of the size adjustment venting of dust explosion container of explosion relief door area, realize airtight connection, dismountable hinge, facilitates the installation of different explosion relief door simultaneously.
Drawn by data analysis in Figure 18, from igniting (t=0 ms) to explosion relief door opening time section, in front 60ms, three pressure curves coincide with one another, different explosion relief door pressure is substantially identical, and the container inner pressure curve after 60 ms under different explosion venting area presents different variation tendencies.
When explosion relief door area is 15 × 15 cm
2time, explosion relief door is opened rear pressure and is not declined immediately, and present the trend continuing to rise on the contrary, reach peak point 0.192 MPa at 98 ms, after this pressure declines rapidly, is down to environmental pressure at 120 ms.Explosion relief door area is 1.5 × 20 cm
2time, explosion relief door opens rear pressure drop, and at 73 ms place appearance second peak value 0.068 MPa, after this pressure declines rapidly, and when 87 ms time point, Pressure Drop is to environmental pressure.When explosion relief door area is 15 × 30 cm
2time, explosion relief door is opened rear pressure and is declined immediately, and now time point is 61 ms, and this curve occurs small size pressure rise phenomenons at 69 ms places again and falls after rise rapidly, after this drops to environmental pressure at 80 ms.
Above-mentioned description of test is when explosion venting area is enough large, and explosion relief door is opened rear container inner pressure and just be there will be the phenomenon declined rapidly.Therefore adopt larger area explosion relief door, its open after container inner pressure decline evenly, pressure drop is rapid, container internal pressure be down to environmental pressure take ask shorter.
Claims (10)
1. an explosion relief door test and proving installation, it is characterized in that: the gas explosion room comprising an airtight venting of dust explosion container and be placed in venting of dust explosion container, a sidewall of described venting of dust explosion container forms primarily of the door leaf of explosion relief door, the alert and resourceful formula venting of dust explosion bolt described door leaf being provided with pressure transducer and being connected with pressure transducer; Two junctions of described venting of dust explosion container and door leaf are provided with one section of air hermetic scalable hard gas explosion wall, and two air hermetic scalable hard gas explosion wall energys make door leaf be in different angles; One end of described door leaf is flexibly connected by spring hinge and air hermetic scalable hard gas explosion wall; Door leaf is locked with corresponding air hermetic scalable hard gas explosion wall by alert and resourceful formula venting of dust explosion bolt by the other end of described door leaf mutually; The side that described venting of dust explosion container is relative with door leaf is provided with the spark plug stretching into gas explosion room and the ignition control device be connected with spark plug.
2. explosion relief door test according to claim 1 and proving installation, is characterized in that: described venting of dust explosion container is also provided with smokeshade instrument.
3. explosion relief door test according to claim 2 and proving installation, is characterized in that: described venting of dust explosion container is also provided with combustible gas probe.
4. explosion relief door test according to claim 3 and proving installation, is characterized in that: described venting of dust explosion container is also provided with safety governor of releasing.
5. explosion relief door test according to claim 4 and proving installation, it is characterized in that: described venting of dust explosion container is also provided with mixed gas entrance, this mixed gas entrance is connected with vacuum pump and gas mixer by pipeline.
6. explosion relief door test according to claim 5 and proving installation, is characterized in that: described gas mixer is also connected with methane gas cylinder and air bottle by pipeline.
7. explosion relief door test according to claim 6 and proving installation, is characterized in that: also comprise the control center be connected with air bottle with pressure transducer, smokeshade instrument, combustible gas probe, safety governor of releasing, ignition control device, vacuum pump, gas mixer, methane gas cylinder respectively.
8. the explosion relief door test according to claim 1 or 7 and proving installation, is characterized in that: described pressure transducer comprises Instantaneous Situation pressure value collector, quartz piezoelectric dynamic pressure transducer, signal modem, Instantaneous Situation registering instrument and system controller; Transient pressure changing value can be converted to electric signal by pressure transducer, by amplifying, storing, numerical analysis produce pressure-time curve.
9. explosion relief door test according to claim 8 and proving installation, is characterized in that: described ignition control device comprises spark electrode, ignition coil and high electric field pulse generator.
10. explosion relief door test according to claim 9 and proving installation, is characterized in that: the ignition energy of described ignition control device is 150mJ.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502208A (en) * | 2014-11-25 | 2015-04-08 | 徐州工程学院 | Explosion venting door experiment and testing equipment |
| CN107521524A (en) * | 2017-07-06 | 2017-12-29 | 南京赛百联人防科技有限公司 | A kind of protective airtight partition door for subway district induction type multidimensional sensor and monitoring method |
| CN111665277A (en) * | 2020-06-22 | 2020-09-15 | 福州大学 | Visual gas cylinder cabinet explosion venting experimental device and experimental method |
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2014
- 2014-11-25 CN CN201420717517.8U patent/CN204286958U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502208A (en) * | 2014-11-25 | 2015-04-08 | 徐州工程学院 | Explosion venting door experiment and testing equipment |
| CN104502208B (en) * | 2014-11-25 | 2017-01-25 | 徐州工程学院 | Explosion venting door experiment and testing equipment |
| CN107521524A (en) * | 2017-07-06 | 2017-12-29 | 南京赛百联人防科技有限公司 | A kind of protective airtight partition door for subway district induction type multidimensional sensor and monitoring method |
| CN107521524B (en) * | 2017-07-06 | 2019-10-08 | 南京赛百联人防科技有限公司 | A kind of protective airtight partition door for subway district induction type multidimensional sensor and monitoring method |
| CN111665277A (en) * | 2020-06-22 | 2020-09-15 | 福州大学 | Visual gas cylinder cabinet explosion venting experimental device and experimental method |
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