DE1983857U - DEVICE FOR LIQUID STORAGE VESSELS FOR ADJUSTING AND MONITORING THE VACUUM REQUIRED IN THE VESSEL. - Google Patents

Description

j. W. PAAP ν 8 MUNICH 22,

Dipl.-tng ... H. ^ ;; lTSGHERLIGH: v7; ^r: ^ 7.R
blpL-Ing. K. GUNSGHMANN

PATENT Attorneys 7;

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'- ■: Height of the liquid level as a result of the withdrawal. "Of liquid - [." Speed, the negative pressure in the air space of the liquid container is reduced by air flowing in from the atmosphere. "■■ *'.". In this way it is avoided "that too high a negative pressure occurs in the partially" empty container, which could lead to the container being pushed in by the outside air pressure. . -. :

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A float is used to control the air flow and three vacuum control valves with upstream solenoid .'-

valves. With liquid withdrawal. and simultaneous electricity • . failure, the regulation of the level of the negative pressure in Ab- "fails." - Dependence on the liquid level. V- "....

In another known device for setting the signals and monitoring the negative pressure in a liquid container an air supply pipe extends to the bottom of the container. Of the

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^ . The upper part of this air supply pipe is connected to the outside air via a liquid barrier and a parallel-connected, previously.-on - "** speaking non-return valve to prevent the liquid barrier.

Finally, there is a facility for regulating the Negative pressure in a liquid container as a function of the liquid level known at which one with the. Loading \

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Vacuum pump connected inside the container or alarm device in Dependence on the lowest point of the liquid container roping pressure is regulated »Serves for regulation a pressure switch with a fixed setting range »

In the case of a submarine with out of the pressure hull arranged oil containers partly filled with water and partly with oil, these are located with the outside water when the boat is submerged each through a line in connection ^ into the one itself spring-loaded opening to the inside of the oil container Yentil is built in. The oil tanks are therefore under negative pressure and in the event of their injury, outside water flows into the oil containers * Except for the aforementioned, up to the bottom of the oil containers Extensive connecting pipe, these only contain an oil extraction pipe.

The invention is based on a device for liquid storage containers for setting and monitoring an underpressure that exceeds the hydrostatic pressure of the respective liquid level in the container by a certain amount in the headspace of the container, comprising a tight fit into the container Introduced Eohr, which is used for the air supply into the container controlled by a non-return valve *

The invention is based on the object, such Device for regulating the in a liquid storage container existing ÜEterdruokes depending on the in the container to simplify the existing liquid level

To this end, the invention proposes that the air be on the clock outside of the container, the switching device for a to The vacuum pump leading to the air space of the container is connected. Then one ear is used for both the air supply and the the control of the vacuum pump,

To prevent the introduced through the air supply tube Air reaches the inlet opening of the fuel pipe via a path along the bottom of the container, the invention also proposes * that the air supply pipe Piece ends above the container bottom © and that its lower Part of an air guide sleeve reaching down over its end is bypassed through which the air introduced by the pipe flows to the open,

Since the lower end of the Luftzuführrohresj to the above the Switching device for the Takuumpump is connected because of the air guide sleeve a little above the bottom of the container ends, corresponds to the one forwarded to this holding device Pressure is not the pressure at the bottom of the container, but is smaller by the pressure between the bottom of the container and the lower end of the air supply pipe »Or with others Words, that of the holding device for the vacuum pump The negative pressure that is passed on at the lower end of the air supply pipe is greater than the pressure on the ground by this pressure height of the container «The negative pressure at the bottom of the container must be according to the currently valid gate scripts in Germany at least

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stems are 200 mm water column. So that this regulation is complied with the switching device for the vacuum pump be set to a vacuum switching value that is around the called pressure height difference is greater than the prescribed negative pressure at the bottom of the container then at the lower end of the air supply pipe a negative pressure which is smaller than the mentioned negative pressure switching value the switching device, it switches on the vacuum pump connected to the air space of the container * Through this Yakuumpump, the negative pressure in the container is increased as long as there is so much at the lower end of the air supply pipe Underpressure sets that the prescribed underpressure corresponds to the bottom of the container.

The following is an embodiment of the invention with reference to the drawing "described

The pressure-resistant liquid storage container 9 contains in its lower part a liquid 8, in particular heating oil, while in its upper, air-filled part 7 negative pressure prevails «The top of the container is hermetically sealed with a lid. One located near the bottom of the container 9 Place out, a fluid pump 1 containing a liquid extraction pipe 12 extends outward * from the upper Part of the container go from two lines 13 and 14, the see later combine to form a main line leading to the outside air »In line 13 there is a vacuum pump 2 and i-m the line 14 is an outwardly opening pressure relief valve 3 built in «

In some Hölie above the bottom of the container 9 opens a pipe 11 to which a control line is attached outside the container 6 connects, which leads to a Sehaltvorriclitung 5 controlling the vacuum pump 2 »The extension 16 of the pipe 11 contains a negative pressure which opens towards the container 9. " valve 4 and opens into the main line 15 ″. The lower part of the air supply pipe 11 lies above the container bottom and is Sound an "up close to the bottom of the container 9 and over the end of the air supply pipe 11 surrounding the protruding air guide sleeve 10.

After filling the container 9 and thereby Increased air pressure in the upper part of the container switches via the tubes 11 and 6 through the at the lower end of the Luftzuführrohres 11 prevailing pressure-controlled pressure scarf = ter 5, the yakuumpump 2, which now sucks so much air out of the air space 7 of the container until it reaches the bottom of the container the prescribed negative pressure prevailed. The negative pressure in the air space 7 of the container is then equal to the hydrostatic s-rather filling level in the container plus the prescribed negative pressure at the container bottom. When liquid is withdrawn by the feed pump 1, which increases the negative pressure in the tank, flows according to the volume of the "liquid removed" Air through the main line 15, the pipe 16, the negative pressure valve 4 and the air supply line 11 until the negative pressure has dropped back to the required height. Through the that lower end of the air supply line 11 surrounding air guide sleeve 10 the supplied air finally flows upwards into the

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Ιλι £ dream 7 tiiid does not reach the lower end of the withdrawal cone with tin 12. ■ ■■ ■ -

Claims ι

Claims (1)

~ Claims 1. Device for liquid storage containers for input set and monitor the hydrostatic pressure of the respective liquid level in the container around a certain Amount of excess negative pressure in the headspace of the container, comprising a tube inserted tightly into the container * das the air supply controlled by a check valve is used in the container, characterized in that to the air supply pipe (11) outside the container (9) the switching device (5) for one leading to the air space (7) of the container (9) Vacuum pump (2) connected by means of a control tube (6 ") is" 2, device according to claim 1, characterized in that the air supply pipe (11) ends a piece above the container bottom and that its lower rope is from one above End downward reaching air guide sleeve (10) is surrounded, through which the air introduced through the Eohr (11) flows upwards * 3 * Device according to claims 1 and 2, characterized in that the negative pressure switching value of the Sehaltvorriehtung (5) for the valley pump (2) is greater than the difference in pressure between the bottom of the container (9) and the lower end of the air supply pipe (11) the prescribed negative pressure at the bottom of the container _β The / patent attorney