DE102011102565A1 - Counter flow-clearing nozzle for use in spark-extinguishing installation utilized in system for conveying e.g. dusts, has deflecting plate comprising curved channel, where nozzle injects water at beam angle against delivered flow - Google Patents
Counter flow-clearing nozzle for use in spark-extinguishing installation utilized in system for conveying e.g. dusts, has deflecting plate comprising curved channel, where nozzle injects water at beam angle against delivered flow Download PDFInfo
- Publication number
- DE102011102565A1 DE102011102565A1 DE102011102565A DE102011102565A DE102011102565A1 DE 102011102565 A1 DE102011102565 A1 DE 102011102565A1 DE 102011102565 A DE102011102565 A DE 102011102565A DE 102011102565 A DE102011102565 A DE 102011102565A DE 102011102565 A1 DE102011102565 A1 DE 102011102565A1
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- nozzle
- extinguishing
- water
- spark
- countercurrent
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/04—Fire prevention, containment or extinguishing specially adapted for particular objects or places for dust or loosely-baled or loosely-piled materials, e.g. in silos, in chimneys
-
- 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
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C99/00—Subject matter not provided for in other groups of this subclass
- A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
- A62C99/0072—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using sprayed or atomised water
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B21/00—Teaching, or communicating with, the blind, deaf or mute
- G09B21/001—Teaching or communicating with blind persons
- G09B21/006—Teaching or communicating with blind persons using audible presentation of the information
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/28—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for medicine
- G09B23/30—Anatomical models
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- Business, Economics & Management (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Public Health (AREA)
- Emergency Management (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Theoretical Computer Science (AREA)
- Educational Technology (AREA)
- Educational Administration (AREA)
- Medicinal Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Medical Informatics (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Algebra (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Mathematical Physics (AREA)
- Pure & Applied Mathematics (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Nozzles (AREA)
Abstract
Description
In Anlagen, die Stäube, Späne, Flocken oder andere brennbare Materialien in Rohrleitungen fördern, kann ein Funken in der Rohrleitung eine Explosion oder einen Brand auslösen. Aus diesem Grunde werden in den Rohrleitungen Sensoren installiert, die einen vorbeifliegenden Funken erkennen und ein Ventil öffnen, um Wasser mit einer Löschdüse in die Rohrleitung einzuspritzen, das den Funken löschen soll.In systems that convey dusts, shavings, flakes or other flammable materials in piping, a spark in the pipeline can cause an explosion or fire. For this reason, sensors are installed in the piping to detect sparks passing by and open a valve to inject water into the pipe with a quenching nozzle to extinguish the spark.
Bislang verwendete Düsen spritzen radial in das Rohr ein, das Wasser wird in der Düse zerstäubt und die Tropfen bilden sich zu einem Kegel aus, der aber für die Löschung eine ungünstige Form hat. Es entstehen dadurch Bereiche, in die mehr und Bereiche in die weniger Wasser eingespritzt wird. Der Rohrquerschnitt wird nicht homogen mit Wassernebel ausgefüllt. Da diese Düsen einen Spritzwinkel von weniger als 180° haben gibt es direkt neben dem Wasserauslass Bereiche, in die gar kein Wasser gelangt. Diese Probleme werden u. a. durch die in den Patentansprüchen 1 bis 9 aufgeführten Merkmale gelöst.Previously used nozzles inject radially into the tube, the water is atomized in the nozzle and the droplets form into a cone, which has an unfavorable shape for the extinction. This creates areas in which more and areas in the less water is injected. The pipe cross-section is not filled homogeneously with water mist. Since these nozzles have a spraying angle of less than 180 °, there are areas directly into the water outlet, into which no water gets at all. These problems are u. a. solved by the features listed in the
Die mit der Erfindung erzielten Vorteile bestehen insbesondere darin, dass die Sprührichtung gegen den Förderstrom ausgerichtet ist, die Düse eine Form hat, mit der der Strahl auch nach hinten abgelenkt wird und somit es keinen Bereich im ganzen Rohrquerschnitt gibt, der nicht mit Wassernebel ausgefüllt ist. Die Düse erzeugt einen homogenen Wasservorhang, der den gesamten Rohrquerschnitt ausfüllt. Zudem besteht die Möglichkeit der Düsenstellungsüberwachung, da die Düse in Arbeitsstellung aus einer Buchse austritt und einen Hub von mehreren Millimetern macht. Dieser Hub kann mit einfachen Mitteln erfasst werden und der Anlage als Rückmeldung für eine korrekt abgelaufene Löschung übermittelt werden.The advantages achieved by the invention are in particular that the spray direction is aligned against the flow, the nozzle has a shape with which the beam is deflected backwards and thus there is no area in the entire pipe cross section, which is not filled with water mist , The nozzle creates a homogeneous water curtain that fills the entire pipe cross-section. In addition, there is the possibility of nozzle position monitoring, since the nozzle exits in working position from a socket and makes a stroke of several millimeters. This hub can be detected with simple means and transmitted to the system as feedback for a correctly completed deletion.
Ein Ausführungsbeispiel der Erfindung ist in den Bildern 1 bis 3 dargestellt und wird im Folgenden beschrieben:An embodiment of the invention is shown in Figures 1 to 3 and is described below:
Bild 1 zeigt einen Querschnitt der Düse in Ruhestellung. Es steht kein Wasserdruck an und die Feder drückt die Düse in die Buchse. Die gesamte Einheit ist rohrseitig geschlossen. Die Düse befindet sich mit ihrem Stahlteil unter der Primärwicklung des Stellungssensors und koppelt ein Signal in die Sekundärwicklung aus dessen Höhe die Düsenstellung erkannt werden kann.Figure 1 shows a cross section of the nozzle at rest. There is no water pressure and the spring pushes the nozzle into the socket. The entire unit is closed on the tube side. The nozzle is located with its steel part under the primary winding of the position sensor and couples a signal in the secondary winding from the height of the nozzle position can be detected.
Bild 2 zeigt einen Querschnitt der Düse in Arbeitsstellung. Das einströmende Wasser drückt die Düse nach vorn und spannt die Feder. Das Wasser schiesst durch die Düse und trifft die Prallplatte, von der der Wasserstrahl aufgefächert wird und sich nach allen Seiten verteilt. Durch die besondere Ausformung der Düse wird ein kleiner Teil zur Seite abgelenkt und spritzt sogar hinter die Düse an die Einbau-Halterung. Der gesamte Wasservorhang hat eine elliptische Form und erreicht allseitig die Rohrwände. Je nach Durchmesser der Förderrohre haben sich unterschiedliche Strahlwinkel A als vorteilhaft erwiesen. Die elliptische Form des Wasservorhangs wird durch die Form der Prallplatte gebildet, die in allen 3 Dimensionen gekrümmt ist. Die Düse ist in dieser Stellung aus der Primärwicklung ausgetaucht und koppelt ein wesentlich kleineres Signal in die Sekundärwicklung aus dessen Höhe die augenblickliche Düsenstellung erkannt werden kann.Figure 2 shows a cross section of the nozzle in working position. The inflowing water pushes the nozzle forward and biases the spring. The water rushes through the nozzle and hits the baffle plate, from which the water jet is fanned out and spread out on all sides. Due to the special design of the nozzle, a small part is deflected to the side and even injected behind the nozzle to the mounting bracket. The entire water curtain has an elliptical shape and reaches all sides of the pipe walls. Depending on the diameter of the delivery pipes, different jet angles A have proven to be advantageous. The elliptical shape of the water curtain is formed by the shape of the baffle plate, which is curved in all three dimensions. The nozzle is in this position out of the primary winding and couples a much smaller signal in the secondary winding from the height of the instantaneous nozzle position can be detected.
Bild 3 zeigt die Form des Löschwasservorhang und die Geschwindigkeitsvektoren der Wasserteilchen.Figure 3 shows the shape of the extinguishing water curtain and the velocity vectors of the water particles.
Claims (9)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011102565A DE102011102565A1 (en) | 2011-05-26 | 2011-05-26 | Counter flow-clearing nozzle for use in spark-extinguishing installation utilized in system for conveying e.g. dusts, has deflecting plate comprising curved channel, where nozzle injects water at beam angle against delivered flow |
DE202011110415U DE202011110415U1 (en) | 2011-05-26 | 2011-05-26 | Counterflow extinguishing nozzle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011102565A DE102011102565A1 (en) | 2011-05-26 | 2011-05-26 | Counter flow-clearing nozzle for use in spark-extinguishing installation utilized in system for conveying e.g. dusts, has deflecting plate comprising curved channel, where nozzle injects water at beam angle against delivered flow |
Publications (1)
Publication Number | Publication Date |
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DE102011102565A1 true DE102011102565A1 (en) | 2012-11-29 |
Family
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Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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DE102011102565A Pending DE102011102565A1 (en) | 2011-05-26 | 2011-05-26 | Counter flow-clearing nozzle for use in spark-extinguishing installation utilized in system for conveying e.g. dusts, has deflecting plate comprising curved channel, where nozzle injects water at beam angle against delivered flow |
DE202011110415U Expired - Lifetime DE202011110415U1 (en) | 2011-05-26 | 2011-05-26 | Counterflow extinguishing nozzle |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE202011110415U Expired - Lifetime DE202011110415U1 (en) | 2011-05-26 | 2011-05-26 | Counterflow extinguishing nozzle |
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DE (2) | DE102011102565A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108175984A (en) * | 2018-02-08 | 2018-06-19 | 海宁欧康电子科技有限公司 | A kind of spark blow-out of high intensity protecting against shock |
-
2011
- 2011-05-26 DE DE102011102565A patent/DE102011102565A1/en active Pending
- 2011-05-26 DE DE202011110415U patent/DE202011110415U1/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108175984A (en) * | 2018-02-08 | 2018-06-19 | 海宁欧康电子科技有限公司 | A kind of spark blow-out of high intensity protecting against shock |
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DE202011110415U1 (en) | 2013-12-13 |
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