EP1971547A1

EP1971547A1 - Method and device for dispensing a fluid from a tank

Info

Publication number: EP1971547A1
Application number: EP06806720A
Authority: EP
Inventors: Hans Peter Amann
Original assignee: Bartec GmbH
Current assignee: Bartec Benke GmbH
Priority date: 2006-01-13
Filing date: 2006-11-17
Publication date: 2008-09-24
Anticipated expiration: 2026-11-17
Also published as: ATE486041T1; DE102006001866C5; DE502006008200D1; WO2007087849A1; DE102006001866B4; EP1971547B1; DE102006001866A1

Abstract

The method involves conveying and delivering of fluid by a conveyor line (10) from the tank (2). The volume of the delivered fluid is measured. The conveyor line is blocked for stopping the delivery by a tank shut-off device (13) e.g. base valve. The residual fluid is conveyed and delivered from the conveyor line to the tank facing side of the tank shut-off device. The volume of the residual conveyed fluid is measured. An independent claim is included for the device for delivering fluid from tank.

Description

Method and device for dispensing a fluid from a tank

The invention relates to a method and a device for dispensing a fluid, in particular a measured amount of fluid, from at least one tank.

In the delivery of mineral oil products, such as fuel oil, to the end customer usually a legally approved measuring device must be used, on the one hand allows a true-to-accurate measurement of the flow volume and on the other hand prevents air pockets, especially air bubbles, the product to be dispensed are added. A device with a measuring device designed for this purpose is described for example in EP 0 855 576 A1.

According to the teaching of EP 0 855 576 A1, the liquid is discharged via a pipeline from a tank, wherein a pump and a counter are provided on the pipeline. Further, a degassing tank and a gas bubble sensor is provided on the pipe upstream of the counter. In order to avoid that gas entrained with the liquid penetrates into the counter, in the device of EP 0 855 576 A1 the bubble fraction can be measured by means of the gas bubble sensor and the power of the pump can be controlled accordingly. Is it coming, especially for To stop the delivery, to an excessive Lufteinschlag, so the pump can be stopped, it can be provided that in the degassing still so much product remains that it is ensured that no gas enters the meter. In the pipeline thus remains at the end of dispensing a residual volume of the product.

If a partial delivery is made with the device of EP 0 855 576 A1, ie the tank is not completely emptied, the entire pipeline system, including the components arranged thereon and full hoses arranged thereon, remains filled with the corresponding product at the end of dispensing.

In a typical tanker, the residual volume contained in the pipeline system at the end of delivery may typically be up to 30 liters.

If, after completion of the delivery, a product change is carried out, for example by switching over to a differently filled tank chamber, the residual volume contained in the pipeline can lead to mixing and contamination of the subsequently discharged product. In particular, in high-quality fuel oils and diesel fuels with different sulfur content and with biosynthetic additives, however, such contamination by residual volume amounts are to be avoided.

DE 197 33 715 C1 discloses a method for dispensing liquid from a tanker containing several chambers essentially by gravity. According to the teaching of DE 197 33 715 Cl is at the end of the delivery Closed bottom valve of the tank and vented the discharge line for emptying. During this emptying, the electronic registration of the count signals of a spool counter or turbine counter, which is intended to determine the amount of liquid dispensed, is stopped. The volume of liquid dispensed during the emptying of the residue is taken into account by adding a previously determined value to the volume value registered until then in an electronic control device. However, in particular when there are air pockets in the pipe system, this approach can not be sufficiently accurate with regard to the legal requirements.

From DE 198 21 559 Al it is known to push out the volume of liquid contained in the delivery hose of a dispenser at the end of dispensing by means of compressed gas.

DE 100 46 921 C1 and US Pat. No. 5,505,335 describe a procedure in which residual fluid contained in the line at the end of the discharge is returned to the tank.

It is an object of the invention to specify a method and a device for dispensing a fluid, which ensure high product purity with high accuracy in the determination of the amount of fluid dispensed.

This object is achieved by a method for dispensing a fluid from at least one tank having the features of claim 1 and a device for dispensing a fluid from at least one tank having the features of claim 9. Preferred embodiments are given in the respective dependent claims. In the method according to the invention, it is provided that the fluid is conveyed out of the tank via a delivery line and the amount of discharged fluid is measured. At the end of the delivery, the delivery line is shut off by means of a tank shut-off device, in particular a bottom valve, and then shut off on the Residual fluid located on the tank side facing away from the Tankabsperreinrichtung is discharged from the feed line and is also discharged, wherein the amount of the discharged residual fluid is measured.

A basic idea of the invention can be seen in the fact that a residual amount of fluid contained in the delivery line after completion of delivery, which can also be referred to as carry-over volume, is not pumped into intermediate tanks or pumped back into the tank, but is delivered to the customer. In this case, a fluid quantity measurement is carried out in the residual fluid volume, so that the legal requirements is met. According to the invention, therefore, the delivery line system is emptied after delivery, so that the risk of mixing by residual fluid is reduced. In this case, a discharge amount measurement is carried out during the entire dispensing operation, including the discharge of the residual fluid.

Preferably, during the residual fluid delivery, an additional pump and / or an additional volume measurement device are used which differ from the pump or measurement device used in the initial fluid delivery with the tank shut-off device open. The tank shut-off device according to the invention may be, for example, a til, a slide or a flap act, which are arranged in the line path of the delivery line. In particular, it is a bottom valve of the tank. The fluid may in particular be a liquid, preferably a fuel. If several tanks are provided, these are preferably individual tank chambers of a complete tank. The promotion of the fluid and / or the residual fluid can basically be done solely by gravity, but preferably takes place by pumping action.

The measurement of the amount of the discharged fluid and / or the discharged residual fluid is advantageously carried out by means of a flow measuring device, for example an impeller or turbine meter. In principle, however, other measuring methods and facilities are possible.

According to the invention, it may be provided to stop the fluid delivery in the first phase upon reaching a predetermined discharge amount and close the Tankabsperreinrichtung. Alternatively, it may also be provided to measure the gas content in the delivery line and to end the first phase of the fluid delivery in dependence on the measurement result. It is particularly advantageous according to the invention that the fluid delivery is stopped at a discharge amount, which corresponds to a desired value minus a predetermined correction value, and then the residual fluid is discharged. As a result, an overfilling of the container, in which the fluid is discharged, can be avoided. The correction value preferably corresponds to a maximum value which corresponds to a complete fluid filling of the delivery line side remote from the tank, that is to say without air inclusions. In principle, it is possible to dispense the residual fluid over the same conduit route, via which the fluid is also dispensed in the first dispensing phase before shutting off the tank shut-off device. It is particularly advantageous, however, that the residual fluid is discharged through a Entestungsleitung, which branches off from the feed line and at a further spaced from the tank location preferably re-opens into the delivery line- This makes it possible, the occurrence of mixtures by residual fluid amounts in dead spaces of To prevent as far as possible de-stemming. If the strainer line re-opens at a downstream location of the conveyor line, it is possible to deliver from one and the same dispensing opening during the entire dispensing process, which is a particularly simple procedure.

A particularly fast and effective de-stemming of the delivery line can be achieved in that the residual fluid is conveyed by means of a removal pump device arranged on the de-stemming line. Suitably, a further pumping means is arranged on the delivery line, which serves for pumping the fluid in the first phase before shutting off the Tankabsperreinrichtung. The refining pump device is suitably operated in a fluid-level-dependent manner.

According to the invention, it can further be provided that the amount of fluid delivered before shutting off the Tankabsperreinrichtung and the amount of the discharged residual fluid are determined by means of different measuring devices. In this case, it can be taken into account that in the case of the residual fluid delivery, frequently smaller volume flows occur than in the case of the preceding fluid delivery. Also, taking into account be taken that the residual fluid may have a relatively high proportion of gas connections. Preferably, the two measuring devices are connected in parallel in terms of line technology, wherein a first line is flowed through by the first measuring device during the delivery of fluid, and a second line is passed through by the second measuring device when the fluid is dispensed. The second line is preferably formed smaller in diameter than the first line.

It is advantageous according to the invention that the amount of residual fluid dispensed is determined by means of a rinsing flow measuring device arranged on the rearing line.

The residual fluid is suitably removed from at least one dead space of the delivery line and / or a lower vertex of the delivery line from this. Preferably, the residual fluid is removed from a gas separator, which is arranged on the delivery line, from the delivery line. Such a gas separator is suitably arranged on the tank-facing side of a flow-measuring device for the fluid provided in the delivery line in order to keep gas inclusions away from this measuring device. Such a gas separator, which can also be referred to as Gasmessverhüter, often has on the bottom side a dead space for the fluid.

A particularly simple handling is given by the fact that the delivered before shutting off the Tankabsperreinrichtung fluid and the remaining fluid are discharged through the same discharge opening. Preferably, however, the conduit paths for the delivery of the fluid and for the delivery of the residual fluid differ at least in sections. According to the invention it can be provided that the fluid is discharged via at least one full hose. Suitably, multiple full tubes are provided for different products. It can be provided that the fluid and in particular the residual fluid is supplied to another full hose depending on the composition. Additionally or alternatively, a fluid delivery via at least one empty tube can be provided.

A device according to the invention is designed with a delivery line which is connected at its one end via a Tankabsperreinrichtung, in particular a bottom valve to the tank, and at its other end at least one discharge opening, means for discharging and discharging residual fluid, which after shutting off the Tankabsperreinrichtung on the tank remote side of the Tankabsperreinrichtung is located in the delivery line, and means for measuring the amount of the discharged residual fluid.

The device according to the invention can be used in particular for carrying out the method according to the invention, whereby the advantages described in this connection can be achieved. The features described in connection with the method according to the invention can also be used in the device according to the invention, as well as the features described in connection with the device according to the invention can be used in the inventive method.

The means for discharging and discharging residual fluid are suitably designed so that the residual fluid, as well as the fluid in the first delivery phase, is discharged via the discharge opening.

A particularly thorough de-stemming of the delivery line can be achieved according to the invention in that the means for discharging and discharging residual fluid have an entrained surface. Have management line, which branches off from the delivery line and in particular at a location further away from the tank, preferably opens again into the delivery line. The rind line branches off advantageously at least one Toträum, in particular at a lower vertex of the delivery line, from the delivery line. Preferably, the Entrustungsleitung is designed compared to the delivery line for a lower flow, in particular formed smaller diameter.

According to the invention, it is advantageous that, in addition to the means for measuring the amount of residual fluid discharged, there are also provided means for measuring the quantity of fluid delivered before shutting off the tank shut-off device. The means for measuring are suitably signal-connected to an evaluation device, which in particular has a summation element for the two measured values. The evaluation device may be part of a controller which controls pumping devices and / or shut-off devices of the device.

According to the invention, it is also advantageous that a gas separator is arranged on the delivery line. This makes it possible that the delivered amount of fluid can be determined very accurately. If a gas separator is provided, it is expedient that the rearing line branches off at the gas separator, in particular at a bottom area of the gas separator. In the bottom region of such a gas separator, a dead space for the fluid may be formed. The gas separator may in particular have a cross-section enlarged range in the delivery line. According to the invention, a plurality of rearing lines can also be provided and / or the rearing line can have a plurality of feed lines which branch off from the conveying line at different locations, in particular at different dead spaces.

In principle, the delivery of the fluid can be carried out with the tank shut-off device open only by gravity. However, it is particularly advantageous that a main pump device is provided on the delivery line. As a result, a particularly high output power can be achieved in the first delivery phase.

In order to determine the quantity of fluid delivered in the first delivery phase, it is further advantageous for a main flow measuring device to be provided on the delivery line. But there are also other means for determining the delivered amount of fluid conceivable, such as a scale arranged on the tank.

For a particularly fast and reliable removal of debris, it is expedient for a removal pump device to be provided on the de-stemming line. It is also advantageous that a de-stemming flow measuring device is arranged on the de-stemming line. In particular, the means for measuring the amount of residual fluid discharged may comprise the rupture flow measuring device. The pumping power of the de-entrainment pump device is preferably lower than the pumping power of the main pumping device.

The flow measuring devices may in particular be turbine meters or vane meters. Suitably, the main pumping device is initially arranged in the line course of the delivery line to the tank, then the gas separator and finally the main flow meter.

A particularly high degree of precision in the determination of the amount of residual fluid dispensed can be achieved by providing a level sensor, in particular in the rind-off line, and that preferably a controller is provided which is designed to rinse the rinsing-off device as a function of the level sensor detected by the level sensor Level control. This level sensor can be designed in particular as a blank detection sensor. By means of this level sensor, it is possible to prevent that the Entestungsdurchflußmesseinrichtung is acted upon with a high proportion of gas or that the Entstungsleitung even runs empty. Since a residual fluid volume usually remains in the rind-off line, it is advantageous for it to have a cross-section small, in particular smaller in cross-section than the delivery line.

The reliability of the invention can be increased by providing at least one shut-off device on the rearing line. The at least one shut-off device can advantageously be actuated by the controller. Preferably, at least one shut-off device is provided both at the branch and at the junction of the rearing line from or into the conveying line, so that the roving line during the first delivery phase, ie the phase at which the Tankabsperreinrichtung is opened, fluidically both inlet side and outlet side can be separated from the delivery line. Preference is given on both sides of the rinsing flow measuring device and / or the debarking Pumping device per a shut-off device provided on the Entstungsleitung. If a plurality of delivery openings are provided for different products, it may be advantageous to provide a separate shut-off device for each discharge opening on the outlet side of the discharge line.

It is also advantageous according to the invention that the discharge line on the tank-facing side of the main flow measuring device branches off from the conveying line and re-opens into the conveying line on the side of the main flow measuring device facing away from the tank. In this case, the rind line forms a bypass line which bypasses the main flow meter. Preferably, the main flow measuring device is emptied during the removal.

According to the invention it can further be provided that a shut-off device, in particular a non-return valve, is provided on the delivery line, in particular in the area of the main flow measuring device and in particular on its tank side facing away from the tank. This shut-off device is provided according to the invention on the side facing away from the Tankabsperreinrich. By means of this shut-off device, a region of the delivery line, which is entrestet, of a region of the delivery line, which is not entrestet be separated. This makes it possible according to the invention to work with full hoses. It is preferably provided that the strainer line branches off to one side of the shut-off device from the feed line and opens to the other side of the shut-off device again in the feed line. If a shut-off device is provided, the control is suitably designed to close this shut-off device during the residual fluid discharge. A check valve can tion without external control. The check valve is suitably designed to block fluid flow into the tank.

In order to prevent a quantity of fluid from being counted twice, both in the first dispensing phase and in the de-stemming, the shut-off device is suitably arranged in the immediate vicinity of the main flow measuring device, preferably on its side facing away from the tank. The check valve may also be designed as a pressure holding valve.

It is preferred according to the invention that a plurality of tanks are provided, and that the delivery line has a collector line to which the tanks are connected via a respective Tankabsperreinrichtung. The tanks may in particular be tank chambers of a total tank. The invention is suitably intended for a tanker vehicle.

In particular, when several tanks are provided, which are to be charged with different fluids, it may be advantageous that the delivery line has a plurality of discharge lines, at each of which at least one discharge opening is provided, and that in the delivery line, a distributor is provided with the the fluid is specifically distributed in the various discharge lines. Preferably, the distributor connects directly to the shut-off device arranged in the delivery line, so that a residual volume provided downstream of the shut-off device which is not deesterified is kept as small as possible. If a plurality of delivery lines are provided, it is advantageous for a particularly low mixing that the rearing line branches into a plurality of sub-lines, each of which opens into different discharge lines. At the junction, a separate shut-off device can be provided for each sub-line.

According to the invention it can be provided that the delivery line has at least one discharge line designed as a full hose. Also empty tubes can be provided.

In order to allow a particularly simple and quick de-stemming, it is advantageous that at least one line ventilation device, in particular a ventilation valve, is provided on the delivery line, in particular in the area of the tank shut-off device, with which the delivery line can be ventilated on the tank side in the case of the residual fluid delivery.

Preferably, a gas quantity sensor for the gas-portion-dependent adjustment of the pumping capacity of the main pump device by means of the control is provided on the delivery line.

The invention will be explained in more detail with reference to preferred embodiments, which are shown schematically in the drawings. In the drawings show:

1 shows a schematic view of a device according to the invention for dispensing a fluid for carrying out the method according to the invention in accordance with a first embodiment;

2 shows a detailed view of a device according to the invention in the region of the delivery-line-side distributor according to a second embodiment; Fig. 3 is a plan view of the device of Figure 2 in the direction A; and

4 is a sectional view on the sectional plane B-B side view of the device of FIG. 2nd

Equivalent elements are identified in all figures with the same reference numerals.

A first embodiment of a device according to the invention is shown in FIG. The device has two tanks 2, 2 ', which form tank chambers of a total tank. At the two tanks 2, 2 'in each case designed as a bottom valve Tankabsperreinrichtung 13, 13' is provided. About these bottom valves, the tanks 2, 2 'are emptied into a collector line 11, which is provided on the input side of a delivery line 10.

In the delivery line 10, a main pumping device 15 for conveying the fluid from the two tanks 2, 2 'is provided. On both sides of the main pumping device 15 is arranged in the conveying line 10 in each filter 41, 42. In the line course of the delivery line 10, the main pump 15 with the second filter 42 is followed by a gas separator 30, which has a vertically extending wall section, which is formed compared to the surrounding conveyor line 10 with a larger inner cross-section, in particular with a larger inner diameter.

Connected to the gas separator 30 in the delivery line 10 is a main flow measuring device 17 designed, for example, as a turbine meter, to which in turn immediately follows a shut-off device designed as a check valve 19. The gas separator 30 serves to minimize gas supply to the main flow meter 17. The check valve 19 is followed by a distributor 25, which divides the delivery line cross section into, for example, two separate delivery lines 70, 70 ', which are designed as full tubes toward the end and each have a delivery opening 20, 20'. On the input side of the two discharge lines 70, 70 ', in the region of the distributor 25, the two discharge lines 70, 70' each have a shut-off device 72, 72 '. It can also be provided more than two discharge lines, in which case the number of discharge openings and shut-off devices can be increased accordingly.

In the bottom region of the gas separator 30, a dead space is formed, which can not be pumped off via the conveying line 10 which enters and leaves via it. In this bottom region of the gas separator 30 branches off from the feed line 10 via a shut-off device 61, a rearing line 50 from. This rearing line 50 branches into, for example, two sub-lines 51, 51 ', which open downstream of the check valve 19 into the two dispensing lines 70, 70'. Preferably, at least one partial line is provided per discharge line. In the rearing line 50, a booster pumping device 55 and a rearing flow measuring device 53, which is designed, for example, as a turbine counter, are arranged. Furthermore, a fill level sensor 58 is provided on the tank side of the rennet flow measuring device 53. Behind the branch of the rearing line 50 is in each of the two sub-lines 51, 51 'of the rearing line 50 each have a shut-off device 62, 62' is provided.

If a predetermined amount of fluid of, for example, 3000 l is to be dispensed from the tank 2 by means of the device, the following procedure can be followed according to one embodiment of the invention: First, the delivery line IO is filled by the Tankabsperreinrichtung 13 is opened, the second Tankabsperreinrichtung 13 'is switched to passage. Furthermore, a venting valve 32, which is provided on the gas separator 30 on the cover side, is opened, which is in line connection via a venting line 33, for example with the tank 2, or else with the surroundings. As a result, the delivery line 10 can be filled up to the check valve 19 with fluid.

In addition to the vent valve 32 also other, not shown vent valves may be provided which are in line connection with the environment or with the other tank 2 '.

To prove the filling state of the delivery line 10, a measuring probe 35 is provided on this line. This measuring probe 35 is formed in the present embodiment as an electronic dipstick, which is in the gas separator 30, which can also be referred to as Gasmessverhüter arranged. As soon as it has been determined by means of the measuring probe 35 that sufficient product is present in the line system 10 in order to discharge bubble-free product into the discharge lines 70, 70 'and their full tubes, the venting valve 32 is closed. Alternatively, a timing control can be provided.

During the initial filling of the delivery line 10, the shut-off device 61, which can also be referred to as an entraining valve, and the shut-off devices 62, 62 'and 72, 72' are closed.

If the delivery line 10 is filled, the shut-off device 72 or the shut-off device 72 'is opened and the main pump device 15 is opened, depending on the hose pre-filling. starts. The main flow measuring device 17 detects the amount flowing through, which is substantially free of bubbles due to the upstream gas separator 30. Trained as a computer controller 5 controls the main pumping device 15 such that the delivery process stops in time before the desired setpoint for the delivery. In particular, it is possible to stop at a delivery volume which corresponds to the nominal volume less the volume of the delivery line 10, in the present example at a tube volume of 30 l at a value of 2970 l.

The discharge lines 70, 70 'are already filled with the product of the respective full hose, which can be done, for example, during initial startup of the system.

Subsequently, the Tankabsperreinrichtung 13 is closed. In the illustrated embodiment, in which the sub-lines 51, 51 'of the rearing line 50 on the side facing away from the tank, that is, downstream of the shut-off 72, 72' open into the delivery line, these two shut-off devices 72, 72 'are closed.

Now the de-staining process is started. For this purpose, the Tankabsperreinrichtung 13 is vented via a vent valve 45. Another venting valve is provided on the second Tankabsperreinrichtung 13 'of the second tank 2'. Furthermore, the shut-off device 61 provided on the inlet side of the rearing line 50 and, according to the previously used dispensing line 70 or 70 ', the outlet-side shut-off device 62 or the outlet-side shut-off device 62' of the rearing line 30 are opened. The outlet-side shut-off devices 62, 62 'can also be referred to as selection valves. After opening the shut-off devices 61 and 62 or 62 ', the rag pumping device 55 is started and pumps the product to be sterilized via the rinsing flow measuring device 53 into the injection point of the respective delivery line 70 or 70'. A level sensor 58, which can also be referred to as an empty-signal sensor, monitors the product flow in the dispensing line 50 for air impact. Once a Lufteeischlag is detected, the Entestungspumpeinrichtung 55 is stopped or shut down.

In addition or as an alternative to the fill level sensor 58 in the rearing line 50, a fill level sensor 59 may also be provided on the gas separator 30 for the stated purpose. This level sensor 59 allows a delayed reaction and pump control. The signal of the Füllstandsaufnehmers 58, however, can be used as an absolute shutdown criterion to ensure that no gas can penetrate into the supply line to Entstungspumpeinrichtung 55.

If an emptying of the rearing line 50 is detected by the receiver 58 or 59, the open shut-off device of the two shut-off devices 62, 62 'is closed. The amount of fluid measured via the rupture flow measuring device 53 is added to the amount of fluid measured by the main flow measuring device 17. The delivered and paid amount is thus for example 3000 1 or, depending on the gas content in the delivery line 10, in particular in the gas separator 30, at the beginning of the de-stemming a little less.

Subsequently, the vent valve 45 is closed again and another dispensing operation can be started with entrestetem system. The control of the gas separator 30 can preferably take place via the measuring probe 35 which is designed as a dipstick and indicates the water level in the gas separator 30. The measuring signal of the measuring probe 35 can also be used for controlling the deburring process, in particular for controlling the entraining pump device 55, since with it the fill level in the gas separator 30 can be determined continuously, which considerably simplifies the pump control. If the measuring probe 35 is used for pump control, the level sensor 58 and / or 59 may be omitted.

It should be noted that the de-stiffening system is shown disproportionately large in the schematic figure 1 for the sake of clarity. The internal volume of the de-entraining device, in particular the de-entrainment line 50, should be as small as possible in order to minimize product contamination.

The residual volume remaining in the system can be further reduced by the embodiment of the distributor 25 and associated valve block shown in FIGS. 2 to 4, in which the dead volumes are reduced.

The distributor 25 shown in FIGS. 2 to 4 allows distribution of the product with reduced mixing. In contrast to the embodiment of Fig. 1 branches in the embodiment shown in FIGS. 2 to 4, the rearing line 50 only immediately in front of the manifold 25, that is, in the sub-lines 51, 51 'arranged shut-off devices 62, 62' immediately adjacent the distributor 25 at. In the distributor 25 of FIGS. 2 to 4, on the one hand, the delivery line 10 is branched into the two delivery lines 70, 70 '. In addition, open in the distributor 25, the two sub-lines 51, 51 'of the rearing line 50 in the separate dispensing lines 70, 70' a. In contrast to the embodiment of FIG. 1, the partial lines 51, 51 'open on the tank-facing side of the shut-off devices 72, 72' in the discharge lines 70, 70 'a. The shut-off devices 72, 72 'directly adjoin the distributor 25.

In the exemplary embodiment illustrated in FIGS. 2 to 4, sensors 80, 80 ', which serve to detect a signal from the retting pump device 55 and / or rinsing flow measuring device 53, are arranged in the rearing line 50 upstream of their branching. The debris pumping device 55 and / or the debris flow measuring device 53 can be designed, for example, as a turbine oe meter or impeller counter (with 90 phase offset).

The shut-off devices 62, 62 'and 72, 72' are controlled simultaneously and associated, that is, for example, the shut-off devices 62, 72 are opened and the shut-off devices 62 'and 72' are closed.

The flow measuring devices of the invention can be designed in particular as a driving slide counter.

Claims

1. A method for delivering a fluid from at least one tank (2), in which

the fluid is conveyed out of the tank (2) via a delivery line (10) and is discharged, whereby the quantity of the delivered fluid is measured,

- At the end of the delivery, the delivery line (10) by means of a Tankabsperreinrichtung (13), in particular a bottom valve, is shut off and

- Then on the tank remote side of the Tankabsperreinrichtung (13) befindliches residual fluid from the feed line (10) is discharged and is also discharged, wherein the amount of the discharged residual fluid is measured.

2. Method according to claim 1, characterized in that the residual fluid is discharged via a rearing line (50) which branches off from the delivery line (10) and re-enters the delivery line (10) at a location further away from the tank (2).

3. The method according to any one of the preceding claims, characterized in that the residual fluid is conveyed by means of a at the Entstungsleitung (50) arranged rag removal pump means (55).

4. Method according to one of the preceding claims, characterized in that the amount of fluid delivered before shutting off the Tankabsperreinrichtung (13) and the amount of the discharged residual fluid by means of different measuring devices are determined.

5. The method according to any one of the preceding claims, characterized g e k e n n e c e c e n e, the discharged residual fluid amount by means of a at the Entstungsleitung (50) arranged Entestungs- flow measuring device (53) is determined.

6. The method according to any one of the preceding claims, characterized in that the residual fluid is removed from a gas separator (30), which is arranged on the delivery line (10), from the delivery line (10).

7. The method according to any one of the preceding claims, characterized in that e e e c e s e n e that the fluid discharged before shutting off the Tankabsperreinrichtung (13) and the remaining fluid via the same discharge opening (20) are discharged.

8. Method according to one of the preceding claims, characterized in that the fluid is dispensed via at least one full hose.

9. Device for dispensing a fluid from at least one tank (2), in particular for carrying out the method according to one of the preceding claims, with - A delivery line (10) which is connected at its one end via a Tankabsperreinrichtung (13), in particular a bottom valve to the tank (2), and at its other end at least one discharge opening (20),

- means for discharging and dispensing residual fluid, which is after shutting off the Tankabsperreinrichtung (13) on the side facing away from the Tankabsperreinrichtung (13) in the delivery line (10), and

- Means for measuring the amount of residual fluid discharged.

10. The device according to claim 9, characterized in that the means for discharging and discharging residual fluid have a rearing line (50) which branches off from the delivery line (10) and at a further from the tank (2) spaced location back into the delivery line ( 10) opens.

11. Device according to one of the preceding claims, characterized in that a gas separator (30) is arranged on the delivery line (10), and that the rearing line (50) branches off, in particular at the gas separator (30).

12. Device according to one of the preceding claims, characterized in that on the delivery line, a main pumping device (15) and / or a main flow measuring device (17) is provided.

13. Device according to one of claims 10 to 12, characterized in that on the rennet line (50) is disposed a rinsing pumping device (55) and / or a rinsing flow measuring device (53).

14. Device according to one of claims 10 to 13, characterized in that on the rearing line (50) a level sensor (58) is provided, and that preferably a control (5) is provided, which is adapted to the Entestungspumpeinrich- device ( 55) as a function of the fill level sensor (58) determined fill level.

15. Device according to one of claims 10 to 14, characterized in that there is at least one shut-off device (61, 62) on the rearing line (50).

16. Device according to one of claims 12 to 15, characterized in that the rearing line (50) on the tank facing side of the main flow measuring device (17) branches off from the feed line (10) and on the tankabgewand-side of the main flow measuring device (17) again in the delivery line (10) opens.

17. Device according to one of the preceding claims, characterized in that on the delivery line (10), in particular in the region of the main flow measuring device (17) and in particular particular on the side facing away from the tank, a shut-off device, in particular a check valve

(19) is provided.

18. Device according to one of the preceding claims, characterized in that a plurality of tanks (2) are provided and that the delivery line (10) has a collector line (11) to which the tanks (2) via a respective Tankabsperreinrichtung (13) are connected ,

19. Device according to one of the preceding claims, characterized in that the delivery line (10) has a plurality of delivery lines (70), to each of which a discharge opening

(20) is provided, that in the feed line (10) a distributor (25) is provided, with which the fluid in the different discharge lines (70) can be distributed, and that the Entestungsleitung (50) branches into a plurality of sub-lines (51) , which each lead into different discharge lines (70).

20. Device according to one of claims 10 to 19, characterized in that e e n e c i n e t e, that the delivery line (10) has at least one designed as a full hose discharge line (70).