DE102006002928A1 - Removing water from water/air mixture in calibration station or vacuum tank comprises applying vacuum to first line arranged on separating container and removing water from second line - Google Patents

Abstract

Removing water from a water/air mixture in a calibration station or a vacuum tank (1) comprises applying a vacuum to a first line (3) arranged on a separating container (2) and removing water from a second line (4). The separating container has a float (5) and the second line is closed using the float before the container is completely emptied. The float releases the second line before water can be released via the first line. An independent claim is also included for a calibration station of a vacuum tank.

Description

The The invention relates to a method for separating water from a Water / air mixture in a calibration station or a vacuum tank, wherein the calibration station or the vacuum tank with at least one separating vessel communicates.

In Extrusion, especially in profile extrusion, has to be different Make a water / air mixture are separated, on the one hand in the dry calibration not completely dry because of intermediate water and partly with vacuum tanks. So far is the water content of the mixture in the dry calibration on the Vacuum pump with suction. Here, however, occur vacuum fluctuations on and the power consumption is higher. Furthermore, it is in this embodiment Required that lines be laid steadily falling, to avoid vacuum fluctuations to minimize. Furthermore, it is necessary that the vacuum pump additionally for the promotion of water is designed. This combination of vacuum and water pump avoids Although the vacuum fluctuations, needed but an additional one Aggregate. Increase the costs itself, the installation effort and space requirements increase.

specially in the dry calibration, a central vacuum was designed. Also this is for Each vacuum station requires a separate water pump.

At the Vacuum tank are similar due to the high water content in the pump combination, a separation tank and an additional Water pump used.

task The present invention is therefore a method and a By means of which it is possible to offer a pure water connection as well as to use a pure air connection and the water / air mixture safe to separate.

The solution the procedural task is characterized in that at the separation tank at least one first conduit is arranged, at which a vacuum is applied, and at least a second line is arranged over the the water is separated and the separator tank one Swimmer has, with the size of the float the height difference the connection points in the separation vessel of the two lines as well the cross section of the second line on the basis of a mathematical Model in conjunction with the applied vacuum to each other it is determined that the second conduit is closed by means of the float is before the separation tank completely emptied of water and the float is the second Release line again before water drains over the first line can be. The separation tank is designed so that neither the vacuum connection water can still be deducted the water connection incorrect air is pulled. For this it is necessary the geometric values of the cables in connection with the connected To capture vacuum in a mathematical model and with help of equations of fluid mechanics in connection with gravitation and contact pressure as well as buoyancy behavior with the help of a mathematical model, for example, the Size of the float to be interpreted.

Training is provided, considering of the mathematical model the vacuum in the deposition tank via pressure sensors and Control valves or manual control.

The solution in terms of the device is in connection with the preamble of the claim 3, characterized in that arranged in the separation tank, a float is, by means of the drain the water is controllable. As stated above, this is due to the design of the float possible.

Training is provided, that the separation tank communicating with a central water tank in which a negative pressure is present and the over a water pump is emptied. There are also several stations here be used. This will either be the central water tank connected to a water pump or the central vacuum chamber with at least one vacuum pump.

In the drawing, the principle presented is shown schematically. A calibration station or vacuum tank 1 is via a pipe with a separating tank 2 in connection. At the separation tank is a first line 3 arranged, on which the vacuum is applied, and a second line 4 over which the water is separated. In the separator tank is a float 5 present, in the position shown, the flow of water through the second line 4 prevented. Now get the water / air mixture from the calibration station or the vacuum tank 1 in the separation tank 2 , the water level in the separator tank 2 increase. However, the float is designed via the mathematical model so that it due to the natural buoyancy of the water flow to the second line 4 releases before the water level in the separator tank 2 a height reaches that water over the first pipe 3 can be deducted. Before this is possible, the sequence of the second line 4 released, the water can escape and the water level in the separator tank 2 sinks. For this interpretation to be possible via the mathematical model, it is necessary to know the height h at which the first line 3 at the separation tank 2 connected.

1

calibration Station or vacuum tank

2

separating vessel

3

first management

4

second management

5

swimmer

H

height difference

Claims (7)

Method for separating water from a water / air mixture in a calibration station or a vacuum tank ( 1 ), with the calibration station or the vacuum tank ( 1 ) with at least one separating vessel ( 2 ), characterized in that on the separating vessel ( 2 ) at least one first line ( three ) is arranged, on which a vacuum is applied and at least one second line ( 4 ) is arranged, over which the water is separated and the separation vessel ( 2 ) a float ( 5 ), wherein the size of the float ( 5 ), the height difference (h) of the connection points on the separation vessel ( 2 ) of the two lines ( 3 . 4 ) and the cross section of the second line ( 4 ) is determined based on a mathematical model in conjunction with the applied vacuum to each other such that the second line ( 4 ) by means of the float ( 5 ) is closed before the separating vessel ( 2 ) is completely emptied of water and the float ( 5 ) the second line ( 4 ) again before water over the first line ( 3 ) can be deducted. Method according to claim 1, characterized in that the vacuum in the separation vessel ( 2 ) is controlled via a pressure sensor and a control valve or manually. Calibration station or vacuum tank with a water / air mixture containing a separating vessel ( 2 ), characterized in that in the separation vessel ( 2 ) a float ( 5 ) is arranged, by means of which the outflow of water is controllable. Calibration station or vacuum tank according to claim 3, characterized in that the separating vessel ( 2 ) communicates with a central water tank. Calibration station or vacuum tank according to claim 3, characterized in that the separating vessel ( 2 ) communicates with a central vacuum tank. Calibration station or vacuum tank according to claim 4, characterized in that only one water pump with the central Water tank communicates. Calibration station or vacuum tank according to claim 5, characterized in that the central vacuum chamber with at least a vacuum pump is in communication.