DE8907726U1 - Gas extraction valve for liquid gas containers - Google Patents
Gas extraction valve for liquid gas containersInfo
- Publication number
- DE8907726U1 DE8907726U1 DE8907726U DE8907726U DE8907726U1 DE 8907726 U1 DE8907726 U1 DE 8907726U1 DE 8907726 U DE8907726 U DE 8907726U DE 8907726 U DE8907726 U DE 8907726U DE 8907726 U1 DE8907726 U1 DE 8907726U1
- Authority
- DE
- Germany
- Prior art keywords
- extraction valve
- gas extraction
- sensor
- level
- gas
- 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
- 239000007788 liquid Substances 0.000 title claims description 30
- 238000000605 extraction Methods 0.000 title claims description 14
- 230000001681 protective effect Effects 0.000 claims description 13
- 239000000523 sample Substances 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 description 10
- 238000005429 filling process Methods 0.000 description 6
- 230000000630 rising effect Effects 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 238000009499 grossing Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/296—Acoustic waves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/021—Special adaptations of indicating, measuring, or monitoring equipment having the height as the parameter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/24—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
- G01F23/246—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid thermal devices
- G01F23/247—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid thermal devices for discrete levels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/296—Acoustic waves
- G01F23/2961—Acoustic waves for discrete levels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/296—Acoustic waves
- G01F23/2966—Acoustic waves making use of acoustical resonance or standing waves
- G01F23/2967—Acoustic waves making use of acoustical resonance or standing waves for discrete levels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0323—Valves
- F17C2205/0329—Valves manually actuated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0382—Constructional details of valves, regulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0382—Constructional details of valves, regulators
- F17C2205/0385—Constructional details of valves, regulators in blocks or units
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Description
.·■-:··: :&Ggr;: ·:":"··: anr &igr; 569.·■-:··: :&Ggr;: ·:":"··: anr &igr; 569
- 3 Beschreibung: - 3 Description:
Die Erfindung betrifft ein Gasentnahmeventil für Flüssiggasbehälter nach dem Oberbegriff der Schutzansprüche.The invention relates to a gas extraction valve for liquid gas containers according to the preamble of the claims.
Nach der Verordnung für brennbare Flüssigkeiten (VbF) und deren "Technischen Regeln für brennbare Flüssigkeiten" (TRbF) müssen Heizöltanks ab einer bestimmten Größe mic einer Sicherung gegen Überfüllen des Heizölta.iks bsi der Abfüllung aus Straßentankwagen ausgerüstet asin. Diese Überfüllsicherung besteht aus einem Stander nehmer, bei Höizöltanks "Grenzwertgeber" genannt, mit einem Kaltl.eiterelement zur Abgabe sines Steuerimpulses an einen Schaltverstärker und von dart üfch-r eine Steuerungs- und Meldeeinrichtung zum Stellglied em Strsßentankwagen. Derartige Über-According to the regulation for flammable liquids (VbF) and its "Technical Rules for Flammable Liquids" (TRbF), heating oil tanks of a certain size must be equipped with a safety device to prevent overfilling of the heating oil tank before filling from road tankers. This overfill protection consists of a level sensor, called a "limit value sensor" in the case of heating oil tanks, with a PTC element for delivering a control pulse to a switching amplifier and from there via a control and signaling device to the actuator in the road tanker. Such overfill protection
iö füllsicherungen werden nunmehr «jch für die Abfüllung von Flüssiggas aus Straßentar'fkw-j^er in ortsfeste Behälter vorgeschrieben. Wegen fehlender Anschlußmöglichkeiten, insbesondere bti Altbehältern, wurde das vorhandene Gasentnahmeventil 7>r Ausrüstung mit einem Standaufnehmer vorgesehen, der ein Sensorelement enthält, welches bei Berührung mit dem Flüssiggasspiegel, d. h. bei gefülltem Behälter, ein elektrisches Schaltsignal gibt, welches übei ainen Schaltverstärker die gleichen Abschaltfunktionen am Straßentankwagen auslöst wie beim Heizöltankfahrzeug. Diese Überfüllsicherungen für Flüssiggas werden in den "TRB - Technische Regeln Druckbehälter" neu geregelt.Overfill protection devices are now required for filling LPG from road tankers into stationary containers. Due to a lack of connection options, especially for old containers, the existing gas extraction valve was equipped with a level sensor that contains a sensor element that, when it comes into contact with the LPG level, i.e. when the container is full, emits an electrical switching signal that, via a switching amplifier, triggers the same shutdown functions on the road tanker as on the heating oil tanker. These overfill protection devices for LPG are newly regulated in the "TRB - Technical Rules for Pressure Vessels".
Ein Gasentnahmeventil für Flüssiggasbehälter in seiner gleichzeitigen Funktion als Überfüllsicherung ist bekannt durch die DE-OS 39 00 357.4, ebenso durch die DE-OS 38 11 269 Al mit einem Sensor als Standaufnehmer innerhalb einer Schutzhülse, in welche auch das Höchststandpeilrohr mündet. Weitere Ausführungen sind bekannt durch die DE-OS 37 22 667 Al und das DE-GM 88 06 152.3, wobei das Höchststandpeilrohr offen neben dem Standaufnehmet bzw. dem Sensor zu liegen kommt.A gas extraction valve for liquid gas containers with its simultaneous function as an overfill protection device is known from DE-OS 39 00 357.4, as well as from DE-OS 38 11 269 Al with a sensor as a level sensor within a protective sleeve, into which the maximum level pipe also opens. Other designs are known from DE-OS 37 22 667 Al and DE-GM 88 06 152.3, where the maximum level pipe is open and lies next to the level sensor or the sensor.
Es hat sich bei den ersten Füllversuchen herausgestellt, daß die Abschaltgenauigkeit bei den FlüssiggasbehälternDuring the first filling tests, it was found that the shut-off accuracy of the liquid gas containers
G 125G125
ANR 1 569ANR 1 569
-A--A-
nicht so exakt genau erfolgt wie bei den Heizölbehältern. Der Grund 3'egt darin, daß das Heizöl, als eine reine Flüssigkeit unter atmosphärischen Bedingungen abgefüllt, einen verhältnismäßig klaren und ebenen Flüssigkeitsspiegel ergibt, der mit der zunehmenden Füllung ansteigt, bis der Flüssigkeitsspiegel den durch Aufheizung oder zur Schwingung angeregten Sensor erreicht und dabei dann ein Schaltsignal auslöst. Ganz anders verhält sich das flüssige Flüssiggas beim Einfüllen unter Druck. An der Oberfläche des aufsteigenden Flüssiggases bildet sich eine sehr dichte Nebelwolke, die erst nach Beendigung der Befüllung in einen ruhigen Flüssiggasspiegel übergeht. Der beim Befüllen des Behälters aufsteigende Flüesiggasspiegel berührt also nichi; exakt genug den Sensor des Standaufnehmers, da die Oberfläche etwas brodelt und schwallt und dabei den Sensor einmal früher oder später erreicht, und somit die 85 %ige Füllgrenze unterschiedlich ausfällt.not as precise as with heating oil containers. The reason is that heating oil, as a pure liquid, when filled under atmospheric conditions, produces a relatively clear and level liquid level, which increases as it is filled until the liquid level reaches the sensor, which is excited by heating or vibration, and then triggers a switching signal. Liquid LPG behaves completely differently when it is filled under pressure. A very dense cloud of mist forms on the surface of the rising LPG, which only changes into a calm LPG level once the filling is complete. The LPG level that rises when the container is filled does not touch the sensor of the level sensor precisely enough, as the surface bubbles and swells a little and reaches the sensor sooner or later, and the 85% filling limit therefore varies.
Aufgabe der Erfindung ist es, den während des Befüllvorganges brodelnden und schwallenden Flüssiggasspiegel zurnindest in der Umgebung des Sensors in eine ruhige Lage zu bringen, um eine genaue Abschalthöhe einhalten zu können.The object of the invention is to bring the liquid gas level, which bubbles and surges during the filling process, into a calm position at least in the vicinity of the sensor in order to be able to maintain an exact switch-off height.
Ausgehend von dem im Oberbegriff berücksichtigten Stand der Technik ist diese Aufgabe erfindungsgemäß gelöst mit den kennzeichnenden Teilen des Schutzanspruches und in einer Variation durch die Nebenansprüche.Based on the prior art taken into account in the preamble, this object is achieved according to the invention with the characterizing parts of the protection claim and in a variation by the auxiliary claims.
Die mit dieser Erfindung erzielten Vorteile liegen in der Glättung des Flüssiggasspiegels um den Sensor des Standaufnehmers während des Befüllvorganges, sobald der schwallende Flüssiggasspiegel die Unterkante des Standaufnehmers erreicht. The advantages achieved with this invention lie in the smoothing of the liquid gas level around the level sensor during the filling process as soon as the surging liquid gas level reaches the lower edge of the level sensor.
Die in der Zeichnung dargestellten Ausführungsbeispiele lassen die Funktion wie folgt erkennen:The examples shown in the drawing show the function as follows:
Fig,l zeigt ein komplettes Füllventil 1 im Schnitt mit dem 3r> Standaufnehmer 2 und der elektrischen Stecksreinrichtung 14 zur Verbindung mit dem Schaltverstärker und der Steuerkette.Fig.1 shows a complete filling valve 1 in section with the level sensor 2 and the electrical connector 14 for connection to the switching amplifier and the control chain.
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ANR 1 569ANR 1 569
- 5 Fig.2 zeigt vergrößert im Ausschnitt dargestellt die Schutzhülse 3 des Standaufnehmers 2 mit einem Kaltleiter 4a als Sensor umd dem Höchststandpeilrohr 7 vor dem Hülsenschlitz 6a und einem nn der Unterseite der Hülse 3 angeordneten Sieb 5a, welches die Glättung des aufsteigenden, schwallenden Flüssiggasspie gels herbeiführt. Die Schlitze 6a sind ganz schmal ausgeführt und dienen der Belüftung des Hülseninnenraumes. Ihre Ausbildung erfolgt nach den besten Füllergebnissen. - 5 Fig.2 shows an enlarged detail of the protective sleeve 3 of the level sensor 2 with a PTC thermistor 4a as a sensor and the maximum level pipe 7 in front of the sleeve slot 6a and a sieve 5a arranged on the underside of the sleeve 3, which smooths out the rising, surging liquid gas level. The slots 6a are very narrow and serve to ventilate the interior of the sleeve. They are designed to achieve the best filling results.
Fig.3 zeiyt innerhalb der Schutzhülse 3 mit ihren Bohrungen 6 eine weitere Hülse 3a, angeordnet im geringeren Abstand zur äußeren Hülse 3, mit Belüftungsbohrungen 6, die zu den Belüftungsbohrungen an der äußeren Schutzhülse so versetzt sind, daß ein eindringender Flüssiggasschwall abgefangen und geglättet zu den Bohrungen der inneren Hülse geleitet wird, um in beruhigter Lage den Sensor, hier dargestellt als eine Schwinggabel 4b, erreicht. Das Höchststandpeilrohr führt hier durch die Mitte der Schwinggabel.Der Boden 5b ist hierbei geschlossen.Fig.3 shows within the protective sleeve 3 with its holes 6 another sleeve 3a, arranged at a shorter distance from the outer sleeve 3, with ventilation holes 6, which are offset from the ventilation holes on the outer protective sleeve so that a penetrating liquid gas surge is intercepted and smoothed out and directed to the holes in the inner sleeve in order to reach the sensor, shown here as a tuning fork 4b, in a calmed position. The maximum level pipe here leads through the middle of the tuning fork. The bottom 5b is closed here.
Fig.4 zeigt eine Kombination aus den Ausführungen nach Fig. 2 und 3, also mit äußerer und innerer Hülse mit ihren Durchbrüchen 6 und einem durchlöcherten Boden 5c, der auch als Siebboden 5a ausgebildet sein kann. Diese Ausführung beinhaltet einen Ultraschall-Sensor 4c, darüber mittig angeordnet, in einem Sicherheitsabstand von 1 - 2 % des Füllvolumens, das Höchststandpeilrohr 7. Die Sensoren 4a, b, c sind durch Kabel 8 mit der Steckereinrichtung 14 verbunden.Fig.4 shows a combination of the designs according to Fig. 2 and 3, i.e. with an outer and inner sleeve with their openings 6 and a perforated base 5c, which can also be designed as a sieve base 5a. This design includes an ultrasonic sensor 4c, above which is arranged centrally, at a safety distance of 1 - 2% of the filling volume, the maximum level pipe 7. The sensors 4a, b, c are connected to the plug device 14 by cables 8.
Das Füllventil 1 wird mit seinem unteren Einschraubgewinde in einen Flüssiggasbehälter eingeschraubt. Für die Gasentnahme wird das Absperrventilhandrad 12 geöffnet, das Flüssiggas gelangt über einen nicht dargestellten Ausgangsanschluß zum Verbraucher. Am Manometer 13 kann der Behälterdruck kontrolliert werden. Für den Bsfüllvorgsng wirG über die Steckereinrichtung 14 der Standaufnehmer 2 mit seinemThe filling valve 1 is screwed into a liquid gas container with its lower screw thread. To remove the gas, the shut-off valve handwheel 12 is opened and the liquid gas reaches the consumer via an outlet connection (not shown). The container pressure can be checked on the pressure gauge 13. For the filling process, the level sensor 2 is connected to its
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Sensor 4 - a - b - c über Kabel 8 mit der Steuerkette am T ? &eegr; kfahrzeug verbunden. Nach dem positiven Durchlaufen eines PrüfVorganges wird die Befüllung freigegeben. Gleichzeitig wird über das Peilventil 9 im Handrad 12 das Höchststandpeilrohr 7 über die Bohrung 15 belüftet. Während des Befüllungsvorganges tritt hier dampfförmiges Flüssiggas aus. Sobald der hochsteigende Flussiggasspiegel den Sensor 4 a b - c erreicht, wird eine Änderung des Steuersignales ausgelöst und der Füllvorgang wird unterbrochen. Die untere Öffnung des Peilrohres 7 liegt etwa 1 bis 2 % des Füllvoluiiiefis öuSrhölb des &ogr; &bgr; &udiagr; 5 ö &Ggr; 5 &eegr; , &khgr; 51 ucT uSiUllungSVurgsriy richtig abgelaufen, kommt nach dem Abschalten weiterhin dampfförmiges Flüssiggas aus der Entlüftungs-Kontrollbohrung 15. Sollte, aus welchen Gründen auch immer, aus dieser Kontrollbohrung 15 flüssiges Flüssiggas austreten, so wäre dies ein Zeichen für eine Funktionsstörung an irgendeiner Stelle der Überfüll-Steuerungskette; der Fehler muß dann gesucht werden, was mit Hilfe eines Displays am Steuerkasten erleichtert wird. Nach dem Befüllvorgang wird die Peilventilschraube 9 wieder geschlossen. Wie bereits in der Figurenbeschreibung ausgeführt, liegt der Vorteil dieser Erfindung in der Glättung des als dichte Dampfwolke schwallenden Flüssiggasspiegels durch den Siebboden 5a aiieiiic uuci &agr;&udigr;&ugr;&igr;&igr; &agr;. &Ggr;&igr; vciuiiiuuny m j. &ngr;« &ogr; j. ■ &igr; &ogr; j. <. *» w .·. »u 11 ,,„^.Sensor 4 - a - b - c is connected to the timing chain on the vehicle via cable 8. After a test process has been successfully completed, filling is released. At the same time, the maximum level gauge pipe 7 is ventilated via the hole 15 via the gauge valve 9 in the handwheel 12. During the filling process, vaporous liquid gas escapes here. As soon as the rising liquid gas level reaches the sensor 4 ab - c, a change in the control signal is triggered and the filling process is interrupted. The lower opening of the gauge pipe 7 is approximately 1 to 2% of the filling volume above the cylinder head of the 51 ucT uSiUllungsSVurgsriy has run correctly, vaporous liquid gas continues to come out of the vent control hole 15 after the system is switched off. If, for whatever reason, liquid liquid gas were to escape from this control hole 15, this would be a sign of a malfunction at some point in the overfill control chain; the fault must then be searched for, which is made easier with the help of a display on the control box. After the filling process, the level valve screw 9 is closed again. As already explained in the description of the figures, the advantage of this invention lies in the smoothing of the liquid gas level, which is surging as a dense cloud of vapor, by the sieve bottom 5a aiieiiic uuci &agr;&udigr;&ugr;&igr;&igr;&agr;.&Ggr;&igr; vciuiiiuuny m j. &ngr;« &ogr; j. ■ &igr;&ogr; j. <. *» w .·. »u 11 ,,„^.
innerhalb der Schutzhülse 3. Die richtige Wahl hängt von der Verwendung des Sensors ab. Bei einer nach dem DE-GM 1 985 753 ausgebildeten Überfüllsicherung zum nachträglichen Einbau in Heizöltanks beinhaltet ein Schutzrohr einen herausziehbaren Peil-Meßstab und einen Grenzwertgeber, dessen Schutzhülse noch unten hin geschlossen ist.Die seitlichen Belüftungsbohrungen haben sich bei Heizöl nicht bewährt, da sich diese zusetzen konnten. Nach den neuen Vorschriften der TRbF 511 wurden diese Bohrungen durch einen Längsschlitz ersetzt, der Boden der Schutzhülse bleibt offen zu einer besseren Durchflutung des gegenüber Flüssiggas wiederum zäheren Heizöles.inside the protective sleeve 3. The right choice depends on the use of the sensor. In an overfill protection device designed according to DE-GM 1 985 753 for subsequent installation in heating oil tanks, a protective tube contains a pull-out dipstick and a limit sensor, the protective sleeve of which is still closed at the bottom. The side ventilation holes have not proven to be effective with heating oil, as they could become clogged. According to the new regulations of TRbF 511, these holes have been replaced by a longitudinal slot, the bottom of the protective sleeve remains open to allow better flow of the heating oil, which is more viscous than liquid gas.
Claims (3)
dadurch gekennzeichnet,
daß die Schutzhülse (3) des Standaufnehmers (2) mit dem darin angeordneten Sensorelement (4 a, b, c) - einem Kaltleiter, einem Ultraschallsensor oder einem anders ausgebildeten Sensor - auf der unteren, dem Füllgut im Behälter zugewandten Seite mit einem Sieb (5 a) oder einem vielfach durchlöcherten Boden (5 c) abgedeckt ist.1. Gas extraction valve for liquid gas containers with a maximum level gauge pipe for pneumatic detection of the maximum filling level in the liquid gas container, whereby the gas extraction valve has a shut-off device, a gas extraction connection, a pressure gauge measuring connection, the maximum level gauge pipe runs inside or outside along a probe pipe with level sensor and measuring probe contained therein and is connected to a level gauge valve screw attached to the gas extraction valve housing or the gas extraction valve handwheel, electrical cables lead from the level sensor to a circuit board arranged on the side or top of the gas extraction valve housing - if necessary with converter electronics arranged underneath - with an electrical plug connection part with protective cover,
characterized ,
that the protective sleeve (3) of the level sensor (2) with the sensor element (4 a, b, c) arranged therein - a PTC thermistor, an ultrasonic sensor or a sensor of another design - is covered on the lower side facing the filling material in the container with a sieve (5 a) or a multi-perforated base (5 c).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE8907726U DE8907726U1 (en) | 1989-06-24 | 1989-06-24 | Gas extraction valve for liquid gas containers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE8907726U DE8907726U1 (en) | 1989-06-24 | 1989-06-24 | Gas extraction valve for liquid gas containers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE8907726U1 true DE8907726U1 (en) | 1990-07-26 |
Family
ID=6840447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE8907726U Expired - Lifetime DE8907726U1 (en) | 1989-06-24 | 1989-06-24 | Gas extraction valve for liquid gas containers |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE8907726U1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10347333A1 (en) * | 2003-10-11 | 2005-05-12 | Walther Spritz Lackiersyst | Process for the gentle conveying of sensitive adhesives and arrangement for carrying out such a process |
| WO2011076250A1 (en) * | 2009-12-21 | 2011-06-30 | Wika Alexander Wiegand Se & Co. Kg | Gas cylinder with measuring connection |
| EP2975367A1 (en) * | 2014-07-17 | 2016-01-20 | Walter Stauffenberg Gmbh & Co. Kg | Ventilation and fill level measurement device |
-
1989
- 1989-06-24 DE DE8907726U patent/DE8907726U1/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10347333A1 (en) * | 2003-10-11 | 2005-05-12 | Walther Spritz Lackiersyst | Process for the gentle conveying of sensitive adhesives and arrangement for carrying out such a process |
| WO2011076250A1 (en) * | 2009-12-21 | 2011-06-30 | Wika Alexander Wiegand Se & Co. Kg | Gas cylinder with measuring connection |
| EP2975367A1 (en) * | 2014-07-17 | 2016-01-20 | Walter Stauffenberg Gmbh & Co. Kg | Ventilation and fill level measurement device |
| WO2016008664A1 (en) * | 2014-07-17 | 2016-01-21 | Walter Stauffenberg Gmbh & Co. Kg | Ventilation and filling level measuring device |
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