EP0704229B1 - Verfahren und Vorrichtung zum impulsförmigen Austragen einer Flüssigkeit, insbesondere eines Feuerlöschmittels - Google Patents
Verfahren und Vorrichtung zum impulsförmigen Austragen einer Flüssigkeit, insbesondere eines Feuerlöschmittels Download PDFInfo
- Publication number
- EP0704229B1 EP0704229B1 EP95250235A EP95250235A EP0704229B1 EP 0704229 B1 EP0704229 B1 EP 0704229B1 EP 95250235 A EP95250235 A EP 95250235A EP 95250235 A EP95250235 A EP 95250235A EP 0704229 B1 EP0704229 B1 EP 0704229B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- fluid
- liquid
- dispensing
- high pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims description 10
- 239000003595 mist Substances 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 18
- 230000000903 blocking effect Effects 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 description 61
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000012528 membrane Substances 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000002085 irritant Substances 0.000 description 1
- 231100000021 irritant Toxicity 0.000 description 1
- 150000002829 nitrogen Chemical class 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
- A62C35/023—Permanently-installed equipment with containers for delivering the extinguishing substance the extinguishing material being expelled by compressed gas, taken from storage tanks, or by generating a pressure gas
Definitions
- the invention relates to a method for pulse-shaped Discharge of a liquid, in particular a fire extinguishing agent, from the front opening of a discharge tube or hose by applying high pressure to the liquid, so that the liquid is in a droplet of liquid Mist is broken up, causing the discharge is interrupted by placing one between the front opening of the discharge tube or hose and a high-pressure pump shut-off element in at least one is brought substantially closed position, as well as on a Device for the pulsed discharge of a liquid.
- a liquid in particular a fire extinguishing agent
- the valve will again closed to a new amount of extinguishing agent in the compressed air to promote area and a new pressure pad build up, whereupon the valve opened again and the Extinguishing agent quantity is discharged under atomization.
- this known method requires a relatively large amount great expenditure on equipment, since the extinguishing agent has a line connected to the extinguishing agent supply to the discharge area must be supplied while a via another line Connection to the compressed air source is established, being above also the compressed air source in the form of a conventional breathing air bottle the use is limited to about 12 liquid discharges since then the compressed air supply is exhausted.
- the well-known Process the fundamental disadvantage that the used Compressed air additional with every discharge of extinguishing liquid Air and thus additional oxygen in the range of Source of fire occurs, which leads to a new partial ignition of fire can come.
- a pressure accumulator for example in the form of a known membrane or bladder accumulator, biased so that the pressure built up, of the order of 20 bar to 500 bar, preferably can be between 40 bar, in particular 100 bar and 300 bar, upon release, immediately on the amount of liquid to be dispensed acts and this from the front opening of the discharge tube or hose throws out, by choosing the size and the shape of the discharge opening influences the shape of the spray jet can be.
- the method according to the invention can be used with liquid quantities discharged in pulses from 0.3 l to 5 l delivery rates from 20 to 130 l / min at a Throwing distance between 10 m and 20 m and an extinguishing effect between 5 m and 10 m reach, due to the pulsed discharge the posting rate per unit of time is particularly high.
- the discharge of the liquid is independent of one separate pressure medium supply, since the discharge pressure by the Delivery pressure of the liquid is built up.
- the method according to the invention is special suitable for discharging extinguishing liquid.
- it can also instead of known water cannons against violent ones Demonstrators or similar are used, it being particularly advantageous is that to discharge small amounts of liquid per Impulse of the equipment effort is so low that of one person portable discharge pipes or hoses are used and that suitable irritants are added to the liquid can be the result of the Splitting into liquid droplets can be particularly effective.
- the invention further relates to a device for pulse-shaped Discharge of a liquid, in particular a fire extinguishing agent, with a discharge tube having a front opening or hose connected to a liquid source is, with a high-pressure pump arranged between the liquid source and the front opening for generating pressure for the Discharge a quantity of liquid from the front opening under high pressure so that the amount of liquid in one out Liquid droplets existing mist is broken up, as well with one provided between the high pressure pump and the opening Shut-off element between an open discharge position and one essentially closed Locking position is adjustable, and is characterized by that between high pressure pump and shut-off element at least one pressure accumulator to be charged with liquid is provided is.
- the opening preferably forms the spray jet shaping nozzle opening and can be in a special embodiment to adapt to the respective application in their Cross-sectional dimensions and their shape changeable or by interchangeable insert pieces can be trained.
- shut-off valve is used in particular for fire-fighting purposes in the locked position advantageously a small one Allows the amount of liquid to pass, so there is a risk of freezing of the fire extinguishing agent. If the remaining Passage opening has a small cross section impaired building up sufficient discharge pressure Not.
- a manually operated shut-off valve can act as a blocking element be used.
- the at least one pressure reservoir is preferred Design formed by a membrane or bladder accumulator.
- a membrane or bladder accumulator Such stores essentially consist of a steel container, in which contains a normally prestressed nitrogen Partial space opposite by a membrane or a bubble the container opening is sealed. This nitrogen will due to pressure load on the container opening due to its preload also compressed, so that there is a storage of the pending Pressure results and with sudden relief of the container opening a sudden expansion of nitrogen and so that a pressure transfer takes place.
- the device according to the invention can be a portable lance or Have gun that forms the discharge tube and on which the Manual operation provided for activating the locking element is.
- Several pressure accumulators are available to achieve larger throwing distances be the one with the outlet of the high pressure pump and on the other hand are connected to the shut-off element, so that several pressure accumulators arranged in parallel due to the delivery pressure be charged and their energy to carry one Amount of liquid is available.
- the device according to FIG. 1 contains a high pressure pump 2 which is connected to a liquid source 1.
- a high pressure pump 2 can a large liquid container, however, for example also act as a water supply line.
- the high pressure pump 2 is a safety valve 3 downstream, which when reached of a given pressure a return of pumped Liquid caused by line 4.
- Via the safety valve 3 is the output of the high pressure pump 2 to one Hose 8 connected, which is wound on a hose drum 5 is and the beginning of its end in the swivel 6 Hose reel 5 leads through which the connection to the high pressure pump 2 is produced.
- the hose drum 5 can by means of a crank handle 7 can be rotated.
- the outer end of the hose 8 is connected to a T-piece 9, one of which is a connecting hose 11, the Cross section significantly larger than that of the hose 8 is, via a manually operated shut-off valve 13 to one Lance 12 extends and on the other hand a pressure accumulator 10 is connected, which can be a membrane or bladder accumulator can.
- the high pressure pump 2 for example, electrically or can be driven by an internal combustion engine, activated, so it pumps liquid from the liquid source 1 in the hose 8 and the connecting hose 11, wherein in this builds up a pressure caused by the delivery pressure of the high pressure pump 2 is determined and can be, for example, 250 bar. This pressure also results in pressure being stored in the pressure accumulator 10 due to compression from there, opposite the liquid sealed, prestressed nitrogen. Once the desired fluid pressure has been built up, how can mentioned above, a return of liquid over the Line 4 take place.
- the shut-off valve 13 is closed, and the delivery pressure does not only result in subsequent delivery of liquid in the connecting hose 11 and the pressure accumulator 10, but also the rebuilding of a discharge pressure.
- the hose 8 is a relative may have a small clear width, since the amount of liquid to be pumped per unit of time low and the discharge pressure is high.
- the specified discharge pressure has changed after a period of rebuilt about 1 to 2 seconds, so that a new discharge a quantity of liquid can be carried out.
- an opening 14 with the specified dimensions and the other sizes one Throwing distance of the spray jet of about 10 m and an extinguishing effect reached up to about 5 m.
- the device differs according to the figure 2 of that according to Figure 1 essentially in that to the hose 8 'via interconnected cross pieces 9a, 9b, 9c and a T-piece 9 'connected to the cross piece 9c identically designed pressure accumulators 10a, 10b, 10c, 10 'connected are. These pressure accumulators connected in parallel in this way can for example, membrane or bladder memory.
- the T-piece 9 ' is via a connecting line 11 'and the cross pieces 9a, 9b, 9c are via connecting lines 11a, 11b, 11c to a receiving space 15 connected, the manually operated shut-off valve 13 'is connected upstream. At the shut-off valve 13 'closes an exhaust pipe 12 '.
- Ejection pipe 12 ', shut-off valve 13' and Recording room 15 can in the manner of a water cannon on a Vehicle or similar be mounted, on which, for example the pressure accumulator 10 ', 10a, 10b, 10c can be located. If on this vehicle is also arranged the high pressure pump expediently omitted the hose drum 5 ', or it is one on the vehicle or similar assembled hose reel used, around the inlet of the high pressure pump 2 'by means of a To connect hose with the liquid source 1 '.
- the liquid builds up during operation of the device shown high-pressure pump 2 'conveying from the liquid source 1' the hose 8 ', the cross pieces 9a, 9b, 9c and the T-piece 9' Pressure in the connecting lines 11a filled with liquid, 11b, 11c, 11 'including the receiving space 15 and presses also liquid in the pressure accumulator 10a, 10b, 10c, 10 ', see above that in the manner described in connection with Figure 1 Discharge pressure is built up.
- the amount of impulses to be carried out Liquid is absorbed by the pressure accumulator 10a, 10b, 10c, 10 'determines and can for example 4 liters.
- the discharge pressure can be around 150 bar.
- the Discharge pressure a squeezing out of the amount of liquid by the Discharge tube 12 'and from its front opening 14', it too spraying the liquid into a droplet
- the jet of liquid comes, the shape of which through the shape the opening 14 'is determined. If the opening 14 'a diameter of about 15 mm, so with a pressure of about 150 bar with a liquid volume of 4 liters a throw of about 20 m and an extinguishing effect of up to about 10 m.
- the high-pressure pump delivers 2 'liquid and build again in the described Way a discharge pressure for the discharge of a further quantity of liquid of, for example, 4 liters. This build up of pressure requires about 1 to 2 seconds so the device afterwards ready to dispense another amount of liquid is.
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Fire-Extinguishing Compositions (AREA)
- Nozzles (AREA)
Description
- Figur 1
- zeigt eine Vorrichtung mit einer Lanze für das Austragen von Flüssigkeit.
- Figur 2
- zeigt eine Vorrichtung ähnlich Figur 1, jedoch mit einer größeren Anzahl von Druckspeichern und einer kanonenartigen Ausbildung des Austragrohres.
Claims (9)
- Verfahren zum impulsförmigen Austragen einer Flüssigkeit, insb. eines Feuerlöschmittels, aus der vorderen Öffnung eines Austragrohrs oder -schlauchs durch Beaufschlagung der Flüssigkeit mit hohem Druck, so daß die Flüssigkeit in einen aus Flüssigkeitströpfchen bestehenden Nebel zerteilt wird, worauf das Austragen unterbrochen wird, indem ein zwischen vorderer Öffnung des Austragsrohres oder -schlauches und einer Hochdruckpumpe befindliches Absperrelement in eine im wesentlichen geschlossene Stellung gebracht wird, dadurch gekennzeichnet, daß die Flüssigkeit in der im wesentlichen geschlossenen Stellung des Absperrelementes mit ihrem Förderdruck auf mindestens einen Druckspeicher einwirkt und diesen zum Aufbau des Austragdrucks vorspannt.
- Vorrichtung zum impulsförmigen Austragen einer Flüssigkeit, insbesondere eines Feuerlöschmittels, mit einem eine vordere Öffnung (14; 14') aufweisenden Austragrohr (12; 12') oder -schlauch, das bzw. der mit einer Flüssigkeitsquelle (1; 1') verbunden ist, mit einer zwischen Flüssigkeitsquelle (1, 1') und vorderer Öffnung (14, 14') angeordneten Hochdruckpumpe (2; 2') zur Druckerzeugung für das Austragen einer Flüssigkeitsmenge aus der vorderen Öffnung (14; 14') unter hohem Druck, so daß die Flüssigkeitsmenge in einen aus Flüssigkeitströpfchen bestehenden Nebel zerteilt wird, sowie mit einem zwischen der Hochdruckpumpe (2; 2') und der Öffnung (14; 14') vorgesehenen Absperrelement (13; 13'), das zwischen einer geöffneten Austragstellung und einer im wesentlichen geschlossenen Sperrstellung verstellbar ist, dadurch gekennzeichnet, daß zwischen Hochdruckpumpe (2; 2') und Absperrelement (13; 13') mindestens ein mit Flüssigkeit zu beaufschlagender Druckspeicher (10; 10 a, 10 b, 10 c, 10') vorgesehen ist.
- Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Öffnung (14; 14') eine den Sprühstrahl formende Düsenöffnung ist.
- Vorrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß das Absperrelement (13; 13') ein von Hand betätigbares Absperrventil ist.
- Vorrichtung nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß der mindestens eine Druckspeicher (10; 10a, 10b, 10c, 10') ein Membran- oder Blasenspeicher ist.
- Vorrichtung nach einem der Ansprüche 2 bis 5, gekennzeichnet durch mehrere mit dem Auslaß der Hochdruckpumpe (2') einerseits und dem Absperrelement (13') andererseits in Verbindung stehende Druckspeicher (10a, 10b, 10c, 10').
- Vorrichtung nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, daß die Hochdruckpumpe (2; 2') einen Förderdruck von 20 bar bis 500 bar erzeugt.
- Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß der Förderdruck zwischen 40 bar und 300 bar liegt.
- Vorrichtung nach einem der Ansprüche 2 bis 8, dadurch gekennzeichnet, daß der mindestens eine Druckspeicher (10; 10a, 10b, 10c, 10') eine Aufnahmekapazität von 0,3 l bis 5 l hat.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4436135 | 1994-09-28 | ||
| DE4436135A DE4436135A1 (de) | 1994-09-28 | 1994-09-28 | Verfahren und Vorrichtung zum impulsförmigen Austragen einer Flüssigkeit, insbesondere eines Feuerlöschmittels |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0704229A2 EP0704229A2 (de) | 1996-04-03 |
| EP0704229A3 EP0704229A3 (de) | 1997-02-05 |
| EP0704229B1 true EP0704229B1 (de) | 2001-11-21 |
Family
ID=6530372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95250235A Expired - Lifetime EP0704229B1 (de) | 1994-09-28 | 1995-09-27 | Verfahren und Vorrichtung zum impulsförmigen Austragen einer Flüssigkeit, insbesondere eines Feuerlöschmittels |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0704229B1 (de) |
| AT (1) | ATE209057T1 (de) |
| DE (2) | DE4436135A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19627353C1 (de) | 1996-06-27 | 1997-10-23 | Feuerschutz G Knopf Gmbh | Verfahren zur dynamischen Löschmittelanwendung und Vorrichtung zur Durchführung des Verfahrens |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4512955A (en) * | 1975-06-30 | 1985-04-23 | Kenji Etani | Apparatus for water treatment |
| US4182354A (en) * | 1978-05-02 | 1980-01-08 | U.S. ParaPlate Corporation | Method and apparatus for flow diversion in a high pressure fluid delivery system |
| DE3825078C3 (de) | 1988-07-23 | 1996-11-14 | Hardt Hans Joachim | Feuerlöschvorrichtung |
-
1994
- 1994-09-28 DE DE4436135A patent/DE4436135A1/de not_active Withdrawn
-
1995
- 1995-09-27 AT AT95250235T patent/ATE209057T1/de not_active IP Right Cessation
- 1995-09-27 DE DE59509863T patent/DE59509863D1/de not_active Expired - Lifetime
- 1995-09-27 EP EP95250235A patent/EP0704229B1/de not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE59509863D1 (de) | 2002-01-03 |
| EP0704229A3 (de) | 1997-02-05 |
| DE4436135A1 (de) | 1996-04-04 |
| ATE209057T1 (de) | 2001-12-15 |
| EP0704229A2 (de) | 1996-04-03 |
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