DE968896C - Device for proportionally adding fluids to a fluid stream - Google Patents
Device for proportionally adding fluids to a fluid streamInfo
- Publication number
- DE968896C DE968896C DEL12050A DEL0012050A DE968896C DE 968896 C DE968896 C DE 968896C DE L12050 A DEL12050 A DE L12050A DE L0012050 A DEL0012050 A DE L0012050A DE 968896 C DE968896 C DE 968896C
- Authority
- DE
- Germany
- Prior art keywords
- line
- main line
- valve
- pressure
- amount
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F5/00—Measuring a proportion of the volume flow
- G01F5/005—Measuring a proportion of the volume flow by measuring pressure or differential pressure, created by the use of flow constriction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D11/00—Feed-water supply not provided for in other main groups
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Water Supply & Treatment (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Description
Die Erfindung bezieht sich auf eine Vorrichtung zum verhältnisgleichen Beigeben von Flüssigkeiten zu einem Flüssigkeitsstrom einer Hauptleitung mit einer darin vorgesehenen Drosselstelle zum Steuern der beizugebenden Menge mittels eines Ventils, das vom Hauptleitungsdruck vor der Drosselstelle beeinflußt wird und an das eine Rücklaufleitung zu einem Vorratsbehälter angeschlossen ist. The invention relates to a device for comparing the same Adding liquids to a liquid stream of a main line with a provided therein throttle point for controlling the amount to be added by means of a Valve that is influenced by the main line pressure upstream of the throttle point and on that is connected to a return line to a storage tank.
Ähnliche Vorrichtungen dieser Art sind bekannt. wobei aber in einem Fall die Pumpe stoßweise abgesperrt und unter Höchstdruck gesetzt wird, wenn gar kein Druckmittel benötigt wird. Bei einer anderen Ausführung soll dieser Nachteil behoben werden durch die Anordnung eines Ausgleichsbehälters, der die Anlage jedoch verteuert und außerdem bedeutend vergrößert. Similar devices of this type are known. but in one If the pump is intermittently shut off and put under maximum pressure, if at all no pressure medium is required. In another embodiment, this disadvantage is said to be the case can be remedied by the arrangement of an expansion tank, which the plant however expensive and also significantly enlarged.
Aufgabe der Erfindung ist es nun, eine Vorrichtung zu schaffen, die diese Mängel vermeidet, ein weiches Arbeiten gestattet und gleichzeitig in ihrem Aufbau einfach und bei einer großen Beeinflussungsgenauigkeit betriebssicher ist. The object of the invention is now to provide a device that avoids these deficiencies, allows a soft work and at the same time in their Structure is simple and operationally reliable with a high degree of influencing accuracy.
Dies wird nach der Erfindung dadurch erreicht. daß das Steuerventil als Überströmventil in an sich bekannter Weise nur den Pumpenrücklauf steuert und die Zugabeleitung mit der Hauptleitung dauernd in Verbindung steht. This is achieved according to the invention. that the control valve as an overflow valve in a known manner only controls the pump return and the addition line is permanently connected to the main line.
Ein Beispiel der Erfindung ist in der Zeichnung dargestellt, und zwar zeigt die Abbildung eine schematische Darstellung der Vorrichtung. An example of the invention is shown in the drawing, and although the figure shows a schematic representation of the device.
In einer Rohrleitung', die als Hauptleitung für einen Flüssigkeitsstrom Q vorgesehen ist, befindet sich eine Drosselstelle 2. In dem in der Zeichnung dargestellten Beispiel ist dafür ein Venturirohr genommen, wobei es jedoch auch möglich wäre, statt dessen eine Blende oder ein Ventil einzubauen. In a pipeline 'acting as the main line for a flow of liquid Q is provided, there is a throttle point 2. In the one shown in the drawing A Venturi tube is taken as an example, although it would also be possible to install an orifice or a valve instead.
Eine Kreiselpumpe 3 üblicher Bauart entnimmt ins einem Vorratsbehälter 4 eine gleichbleibende Menge q der beizugebenden Flüssigkeit und fördert sie einem Drucksteuerzylinder 5 zu. Dieser Zylinder nimmt ein Überströmventil 8 mit einem Ventilkegel 9 mit Balg Io auf. Dieses Ventil ist durch den in der Hauptleitung I vor der Drosselstelle 2 jeweils herrschenden Druck belastet, und zwar über eine von der Hauptleitung I vor der Drosselstelle abzweigenden zum Ventil führende Nebenleitung. Von dem Zylinder 5 führt eine Druckleitung 6 für die in die Hauptleitung beizugebende Menge zur Einführungsstelle 7, die an der engsten Stelle des Venturirohres 2 liegt. Eine vom Ventil 8 zur Saugseite der Pumpe führende Überströmleitung nimmt die zuviel geförderte Flüssigkeitsmenge auf. Durch diese Anordnung wird erreicht, daß der Druck in der Hauptleitung I vor dem Venturirohr 2 derselbe ist wie in der Druck leitung 6. Ändert sich also der Druck und damit die durchfließende Flüssigkeitsmenge in der Hauptleitung I, 50 ändert sich der Druck in der Leitung 6 um denselben Betrag und verhältnisgleich die in dieser Leitung fließende Menge. Durch Änderung des wirksamen Ouerschnittes der Leitung 6 mit Hilfe eines in diese Leitung eingeschalteten Einstellventils II kann das Verhältnis der Flüssigkeitsmenge in der Hauptleitung zu der durch die Leitung 6 beizugebenden Flüssigkeitsmenge verändert werden. Zur besseren Kontrolle ist in der Leitung 6 noch ein Durchflußmesser 12 vorgesehen.A centrifugal pump 3 of conventional design takes from a storage container 4 a constant amount q of the liquid to be added and promotes it Pressure control cylinder 5 closed. This cylinder takes an overflow valve 8 with a Valve cone 9 with bellows Io. This valve is through the one in the main line I. loaded in front of the throttle point 2 in each case prevailing pressure, over a secondary line branching off from main line I before the throttle point leading to the valve. A pressure line 6 leads from the cylinder 5 for the pressure line to be added to the main line Amount to the introduction point 7, which is at the narrowest point of the Venturi tube 2. An overflow line leading from valve 8 to the suction side of the pump takes up too much amount of liquid delivered. This arrangement ensures that the pressure in the main line I before the Venturi tube 2 is the same as in the pressure line 6. So does the pressure and thus the amount of liquid flowing through change in the main line I, 50 changes the pressure in the line 6 by the same amount and in proportion to the amount flowing in this line. By changing the effective Cross-section of line 6 with the aid of an adjusting valve connected to this line II can be the ratio of the amount of liquid in the main line to that through the Line 6 to be added amount of liquid can be changed. For better control a flow meter 12 is also provided in the line 6.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL12050A DE968896C (en) | 1952-04-09 | 1952-04-09 | Device for proportionally adding fluids to a fluid stream |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL12050A DE968896C (en) | 1952-04-09 | 1952-04-09 | Device for proportionally adding fluids to a fluid stream |
Publications (1)
Publication Number | Publication Date |
---|---|
DE968896C true DE968896C (en) | 1958-04-03 |
Family
ID=7259055
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEL12050A Expired DE968896C (en) | 1952-04-09 | 1952-04-09 | Device for proportionally adding fluids to a fluid stream |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE968896C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3115158A (en) * | 1962-03-01 | 1963-12-24 | Sterling Prec Corp | Airfoam liquid proportioning system |
DE1244428B (en) * | 1960-04-26 | 1967-07-13 | Minimax Ag | Device for admixing an admixing liquid to a main liquid flow in a fixed mixing ratio |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE288517C (en) * | 1913-05-09 | |||
FR792970A (en) * | 1935-07-27 | 1936-01-14 | Combemale | Automatic doser of all reagents, in particular for water purification |
DE627016C (en) * | 1931-09-15 | 1936-03-07 | Permutit Akt Ges | Device for proportionally adding liquids or gases to a flow of liquid to be treated by means of a pump influenced by a water meter or the like |
FR827956A (en) * | 1936-11-04 | 1938-05-06 | Daimler Benz Ag | Supply device for internal combustion engines, in particular for supplying lubricating oil to aircraft engines |
DE728704C (en) * | 1938-05-29 | 1942-12-02 | Bamag Meguin Ag | Arrangement for the automatic shut-off and release of the addition of measured amounts of liquids or gases by means of an artificially generated pressure difference in the conveying line for the liquid to be treated |
-
1952
- 1952-04-09 DE DEL12050A patent/DE968896C/en not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE288517C (en) * | 1913-05-09 | |||
DE627016C (en) * | 1931-09-15 | 1936-03-07 | Permutit Akt Ges | Device for proportionally adding liquids or gases to a flow of liquid to be treated by means of a pump influenced by a water meter or the like |
FR792970A (en) * | 1935-07-27 | 1936-01-14 | Combemale | Automatic doser of all reagents, in particular for water purification |
FR827956A (en) * | 1936-11-04 | 1938-05-06 | Daimler Benz Ag | Supply device for internal combustion engines, in particular for supplying lubricating oil to aircraft engines |
DE728704C (en) * | 1938-05-29 | 1942-12-02 | Bamag Meguin Ag | Arrangement for the automatic shut-off and release of the addition of measured amounts of liquids or gases by means of an artificially generated pressure difference in the conveying line for the liquid to be treated |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1244428B (en) * | 1960-04-26 | 1967-07-13 | Minimax Ag | Device for admixing an admixing liquid to a main liquid flow in a fixed mixing ratio |
US3115158A (en) * | 1962-03-01 | 1963-12-24 | Sterling Prec Corp | Airfoam liquid proportioning system |
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