EP0731056A1 - Control and safety device and method for transferring liquid between a tanker truck and an underground storage tank - Google Patents

Abstract

At least one hose (30,31) is connected to at least one transfer pipe (22,23) by a transfer appliance (5,6) with connecting fitments (15,16). The inspection system forms a circuit (3) together with a power supply (1,2), and has a threshold value indicator (10) switching on the transfer appliance, on the storage container (20). At least one safety device interrupts the circuit of the threshold value indicator when the transfer process is defective, and the indicator switches off the transfer appliance on the tanker.

Description

The invention relates to a system and a method for monitoring and securing the refilling process between a tank vehicle and a particularly underground storage container or another tank vehicle or between storage containers, wherein at least one hose by means of a transfer device with connection fittings, for example on the tanker, to at least one transfer tube, e.g. the Storage tanks can be connected and the monitoring system with a voltage supply forming a circuit has a filling level limit switch on the storage container that switches the decanting device. The invention further relates to the use of the system.

In the prior art, filling operations or refilling operations from tankers into underground storage containers are carried out partially unsecured or at least with inadequate security or security systems. Poor maintenance or misconduct on the part of the operating personnel and faulty or damaged fittings and hoses can lead to accidents in which soils and / or groundwater in the area of the storage tanks for water-polluting substances such as fuels or acids are considerably contaminated in some cases. In practice, the reason for such accidents is that the filling hose is jumping off or tearing off during the filling process. If the tanker driver or the security system does not intervene immediately, several thousand liters of fuel can get into the ground in a few minutes.

To protect the environment, the legislator has therefore within the framework of the Federal Immission Control Ordinance, the Ordinance on Installations for Handling Water-Hazardous Substances and on Specialized Companies (VAwS); Status: 12.08.1993, the petrol station ordinance and other legal regulations require the use of a filling hose safety device (ASS)

In addition, to protect the environment against fuel accidents, monitoring of the use of a gas pendulum hose is currently required to prevent escaping fuel vapors from escaping from the storage container during filling.

In the prior art, systems are known which formally meet the requirements. In one of these systems, a data signal is sent from the tanker to the dome shaft via the filling and gas pendulum hose. A control unit is activated there, which in turn sends data back over the hose. However, it has turned out to be disadvantageous that the devices required for implementing the system have defects when used in the cathedral shaft. E.g. the means for establishing a safe contact between the filling hose and the control unit in the dome shaft are susceptible to failure and cannot withstand the mechanical loads sufficiently during prolonged operation, or can freeze up at sub-zero temperatures. A plastic coupling used for insulation, for example, requires a tightening torque to be precisely metered for fastening. If you overtighten or tighten too little, leakage results in so-called slack amounts, which continue to penetrate into the soil largely in an uncontrolled manner. A defect in the limit indicator on the storage tank is also not recognized and does not prevent the storage tank from overflowing with the consequence of considerable leakage quantities. The known system also requires considerable investment funds that make small or medium-sized companies shy away from introducing the system.

EP 0 330 859 B1 discloses a system for monitoring the connection of closable pipelines and a connecting line that can be coupled between these pipelines. The connecting line is designed to be electrically conductive and forms a closed circuit with a monitoring device. The shut-off devices of the pipelines can only be actuated by a control device which is activated by the monitoring device. An emergency stop switch is arranged in the circuit, through which the intrinsically safe circuit can be interrupted if necessary. The closed state of the circuit is checked at defined time intervals via resistance or current measurement. As long as the pulsed signals return to the monitoring device, the shut-off devices of the pipelines remain open, otherwise they are closed. A disadvantage of this known monitoring system is that this system is very susceptible to failure if it is arranged in the dome shaft of an underground storage container. Furthermore, it cannot be identified with this previously known system whether the couplings are connected in a media-tight manner, so that considerable amounts of environmentally hazardous substances can get into the environment. This is caused in particular by the fact that the current flow for monitoring the hose connection also occurs when the connecting flange of the connecting line lies only loosely on the pipeline (filler neck) to be connected. This known monitoring system therefore emphasizes that the shut-off elements can only be actuated via the control device which can be activated by the monitoring device.

A monitoring system for filling or against overfilling a container is known from EP-0 330 860 B1, a PTC resistor detecting the maximum permissible product level in the container. An electrically conductive connecting line, which is insulated from the tap and the container, is arranged between a filling pipeline and a connecting pipeline on the container. An electric one is used to monitor the filling process Circuit in which the connecting line and the PTC resistor are connected in series. If the PTC thermistor plunges into the medium in the container, its change in resistance is detected by a monitoring device and the shut-off elements in the filling pipeline are closed by a control device after it has been activated by the monitoring device. As in EP-0 330 859 B1, the closed state of the circuit is checked at defined time intervals by means of pulses by means of resistance or current measurement. For the reasons mentioned above, this monitoring system is susceptible to faults and leaky couplings with the consequence of the leakage of contaminating quantities are not identified. A monitoring system is therefore dealt with here, in which the PTC resistor and the connecting line are connected in series in a circuit. It is also stated that the monitoring device comprises at least one voltage source and functional elements for measuring suitable electrical parameters of the circuit, specifically for detecting the mechanical state of the connecting lines and the fill level. Finally, the previously known system explicitly relates to a stationary tap and a portable storage container.

From DE 34 36 893 A1 and DE 36 42 405 A1 systems are known which are used for monitoring and control for filling protection of tank systems. However, the proposed measures relate to preventing the filling process when the limit switches are swapped and the correct assignment of the limit switches to the respective filler neck. In this context, contactless sensors for monitoring the hose connection are spoken of, magnetic sensors not being mentioned.

All known systems are based on the fact that the monitoring and control devices are implemented with active electrical components.

Based on the shortcomings recognized in the prior art, the invention has for its object to provide a new system and method for monitoring and securing the decanting process between a tanker and a storage container of the type mentioned, which is extremely robust and for use in the cathedral shaft and is suitable for a tanker vehicle under the rough operating conditions there and is also inherently fail-safe, ie that in the event of an error it falls into the safe operating state by blocking itself and leading to a refusal to release the filling process or to an interruption thereof, can also be retrofitted to equip existing tankers and storage tank systems and the retrofitting and / or new equipment is reasonable for the operators for cost reasons .

The problem is solved in a system for monitoring and securing the transfer process between a tanker and a storage container of the type mentioned in the preamble of claim 1 with the invention in that at least one fail-safe safety device connected to the existing level monitoring system is provided, which at an incorrect refilling process interrupts the circuit of the limit transmitter and this switches off the refilling device on the tanker. The fail-safe safety device includes those system elements that are contained in the system anyway and basically falls into the operationally safe state in the event of system errors. In a further development of the inventive concept, in particular for the safe transfer of fuels for motor vehicles with gasoline engines or diesel engines, it is advantageously provided that the circuit of the limit indicator and / or its electronics have at least one associated with the filling hose and / or gas pendulum hose and / or their fittings and with them directly or Has additional circuit arrangement interacting via mechanically / electrodynamically stimulable means, which keeps the circuit of the limit transmitter, which arises when the limit transmitter is correctly connected, closed as long as the filling hose or filling hose and gas pendulum hose correctly connected with their fittings to the storage container and / or vehicle-side connections or are not interrupted, and the circuit is interrupted as soon as the fittings or hoses are not correctly connected, or hoses are torn off in whole or in part.

In contrast, the prior art monitoring system according to EP 0330859 B1 rises from the fact that the shut-off devices can be actuated exclusively by the activatable by the monitoring device controller. In the system according to the invention, the control device is activated via the PTC resistor / limit value circuit, ie the exclusivity is not given.

In contrast, EP 0 330 860 B1 deals with a monitoring system in which the PTC resistor and the connecting line are connected in series in a circuit. This is not the case with the system according to the invention; here the current via the connection lines, i.e. hoses, is only galvanically connected, there are at least two circuits. EP 0 330 860 B1 also states that the monitoring device comprises at least one voltage source and functional elements for measuring suitable electrical parameters of the circuit, specifically for detecting the mechanical state of the connecting lines and the fill level. This is also not the case with the new system according to the invention.

In the process presented here, an existing circuit is interrupted or closed via a new circuit with passive components such as reed sensors or relays. As a result of this process, the filling process is interrupted or released. This idea does not underlie all known systems and does not emerge from them.

The system according to the invention and the corresponding method are thus based on a functional principle by means of which, when filling underground storage containers of tank vehicles with the aid of electrical current and its uninterrupted flow the correct connection of all connection elements including the hoses is determined. The filling process can therefore only begin or be continued as soon as all the connection and connection elements provided are correctly connected. The complete detachment of a hose during the filling process is also determined practically without delay and the filling process is also interrupted without delay. In the case of fuels with volatile constituents such as ethanol or benzene, a storage tank is filled with gas oscillation, ie displaced gases and vapors are returned to the tanker tank during the liquid dispensing process by means of volume compensation in relation to the liquid. A storage tank for diesel fuel or kerosene can be filled without gas oscillation. Further advantageous designs of the monitoring and security system are described in the subclaims.

Figur 1

ein Schalt- und Funktionsschema des Systems mit zur Überwachung des Umfüllvorganges zwischen einem Tankfahrzeug und einem unterirdischen Lagerbehälter mittels elektrischem Strom;

Figur 2

ein Schalt- und Funktionsschema des Systems mit Sicherung durch elektrischen Strom und mechanische Abtastung;

Figur 2a

ein Schalt- und Funktionsschema mit zwei DC/DC Wandlern und Schaltung des Grenzwertgeberstromkreises,

Figur 2b

ein Schalt- und Funktionsschema mit zwei DC/DC Wandlern und Schaltung der Stromversorgung des Grenzwertgebers,

Figur 3

ein Schalt- und Funktionsschema eines Sicherungssystems für Schlauchanschlüsse mit mechanischer Abtastung;

Figur 4

ein Schalt- und Funktionsschema einer Abfüllsicherung mit mechanischer und elektrodynamischer Anregung und Beschleunigungssensoren;

Figur 5

eine andere Ausführung eines Sicherungssystems mit elektrodynamischer Anregung und Beschleunigungssensoren;

Figur 6

in Ansicht und teilweise im Schnitt eine elektromechanische Abtastung an einem Schlauchanschluß;

Figur 7

ein Schema einer elektromechanischen Überwachung des Peilstabsitzes;

Figur 8

Mittel zur Anschlußüberwachung des Peilstabsitzes durch elektromagnetische Abtastung am Führungsrohr;

Figur 9

Mittel zur elektrischen Anschlußüberwachung des Peilstabsitzes durch eine Kontaktbrücke;

Figur 10

ein Schema einer Abfüllschlauchsicherung mit elektromechanischer Abtastung der Anschlußkupplungen;

Figur 11a-11d

Anordnung von Überwachungsmagneten und Reed-Schaltern an Schlauchkupplungen;

Figur 12a, 12b

Schlauchkupplungsteile mit integrierten Überwachungselementen, im geöffneten Zustand;

Figur 13

die Schlauchkupplungsteile gem. Fig. 12a, 12b im ordnungsgemäß gekuppelten Zustand.

The invention is explained in more detail below on the basis of exemplary embodiments, expedient details of the invention being apparent from the drawings. Show it:

Figure 1

a circuit and functional diagram of the system with to monitor the transfer process between a tanker and an underground storage container by means of electrical current;

Figure 2

a circuit and functional diagram of the system with protection by electrical current and mechanical scanning;

Figure 2a

a switching and functional diagram with two DC / DC converters and switching of the limit switch circuit,

Figure 2b

a switching and functional diagram with two DC / DC converters and switching the power supply of the limit switch,

Figure 3

a circuit and functional diagram of a security system for hose connections with mechanical scanning;

Figure 4

a circuit and functional diagram of a filling protection with mechanical and electrodynamic excitation and acceleration sensors;

Figure 5

another embodiment of a security system with electrodynamic excitation and acceleration sensors;

Figure 6

in view and partly in section an electromechanical scanning on a hose connection;

Figure 7

a diagram of an electromechanical monitoring of the dipstick seat;

Figure 8

Means for monitoring the connection of the dipstick seat by electromagnetic scanning on the guide tube;

Figure 9

Means for electrical connection monitoring of the dipstick seat by a contact bridge;

Figure 10

a diagram of a filling hose fuse with electromechanical scanning of the connection couplings;

Figure 11a-11d

Arrangement of monitoring magnets and reed switches on hose couplings;

Figure 12a, 12b

Hose coupling parts with integrated monitoring elements, when open;

Figure 13

the hose coupling parts acc. 12a, 12b in the properly coupled state.

1 shows a circuit and functional diagram of a first embodiment of the system for monitoring and securing the refilling process between a fictitious tanker 19 and an underground storage container 20 with dome shaft 21. The current filling level is identified by 11. The limit indicator 10 is arranged in the storage container 20 at the level of the maximum permissible liquid level. A voltage supply 1 with the current source 2, for example a conventional 24 volt battery, is arranged on the tanker vehicle 19. The power supply 1 of the limit transmitter 10 has a potential-free circuit 3 via a DC / DC converter 9, with at least one of the filling hose 30 and / or the gas pendulum hose 31 and / or its fittings 15 to 18 and associated with these directly or via mechanical / Electrodynamically stimulable means 33 to 36 (see FIG. 4) interacting additional circuit arrangement, which keeps the circuit 3 of the limit indicator 10 closed, as long as the filling hose 30 or filling hose 30 and gas pendulum hose 31 correctly with their fittings 15 to 18 on the storage container and / or vehicle-side connections 5, 6; 22, 23 are connected or not interrupted, and the circuit 3 is interrupted as soon as fittings 15 to 18 or hoses 30, 31 are not correctly connected or hoses 30, 31 are torn off in whole or in part.

• eine Leitung 100 zwischen dem Plus-Potential der Spannungsversorgung 1, 2 des Tankfahrzeugs 19 über einen DC/DC-Wandler 50 und dem Füllschlauch 30 oder Füllschlauchstutzen 5;
• eine Leitung 101 zwischen dem Minus-Potential des DC/DC-Wandlers 9, 50 und dem Minus-Potential des Grenzwertgebers 10;
• eine am Plus-Potential des Füllrohres 22 im Domschacht 21 angeschlossene Leitung 102 mit einer Verzweigung in zwei Leitungsäste 103, 104, von diesen abzweigend
• einen Ast 103 mit einer Relaisspule S2 mit Schalter C2 und Anschluß an einen zwischen den Isolationen 24, 25 angeordneten isolierten Bereich des Gaspendelschlauches 31 oder Gaspendelrohres 23;
• einen Ast 104 mit Wahlschalter C3 und anschließender Leitung 105 für das Plus-Potential mit Verbindung entweder direkt oder über Schalter C2 an die Spule S1 mit Schalter C1;
• eine Verbindung der Spule S1 mit der Leitung 106 an das Plus-Potential des Stromkreises vom Grenzwertgeber 10, wobei
• die Leitung über DC/DC-Wandler 9 zwischen der Spannungsversorgung 1, 2 und dem Schalter C1 angeschlossen ist;
• der Grenzwertgeber 10 zwischen Schalter C1 und über DC/DC-Wandler 9 dem Plus-Potential der Spannungsversorgung 1 angeschlossen ist;
• und das Plus-Potential des isolierten Gaspendelschlauches 31 über DC/DC-Wandler 9 mit dem Minus-Potential der Spannungsversorgung 1, 2 über eine Leitung 107 verbunden ist.

The additional circuitry includes the following features

• a line 100 between the plus potential of the voltage supply 1, 2 of the tank vehicle 19 via a DC / DC converter 50 and the filling hose 30 or filling hose connector 5;
• a line 101 between the negative potential of the DC / DC converter 9, 50 and the negative potential of the limit value transmitter 10;
• a line 102 connected to the plus potential of the filling pipe 22 in the dome shaft 21 with a branching into two line branches 103, 104, branching off from these
• a branch 103 with a relay coil S2 with switch C2 and connection to one arranged between the insulations 24, 25 insulated area of the gas pendulum tube 31 or gas pendulum tube 23;
• a branch 104 with selector switch C3 and subsequent line 105 for the plus potential with connection either directly or via switch C2 to coil S1 with switch C1;
• a connection of the coil S1 to the line 106 to the plus potential of the circuit from the limit indicator 10, wherein
• the line is connected via DC / DC converter 9 between the voltage supply 1, 2 and the switch C1;
• the limit switch 10 is connected between the switch C1 and via DC / DC converter 9 to the plus potential of the voltage supply 1;
• and the plus potential of the insulated gas pendulum hose 31 is connected via DC / DC converter 9 to the minus potential of the voltage supply 1, 2 via a line 107.

The coil S1 draws its negative potential from the circuit 3 of the limit switch 10, the negative potential between the voltage source of the limit switch supply 1 and the switch C1 being tapped. The limit switch 10 is located between the switch C1 and the plus potential of the voltage source for supplying the limit switch 10. On the tanker, the plus potential of the gas pendulum hose 31 is connected to the minus potential of the voltage source 1, 2. The gas pendulum hose 31 is isolated between the potential tap and the transport tank of the tanker 19 by the insulation 25.

The selector switch C3 is set to position 1 for a storage tank for gasoline fuels and to position 2 for a storage tank for diesel fuels. In the simplest case, the selector switch C3 is switched over manually.

With the system shown in Fig. 1, the correct connection of a hose 30, 31 is determined with the aid of electrical current. The filling process can only start or continue if the hoses 30, 31 are correctly connected and intact. If a tear or a partial tear of a hose is detected during the filling, the filling process is interrupted practically without delay. When filling a storage tank for petrol, filling hose 30 and gas pendulum hose 31 are correctly connected, after which a current flows through filling hose 30, filling pipe 22, coil S2, gas pendulum pipe 22 and gas pendulum hose 31. This closes switch C2. As a result, current flows in coil S1 and closes switch C1. The limit indicator electronics 90 enables the filling process.

If the gas pendulum hose 31 or the filling hose 30 is not correctly connected, switch C2 and thus switch C1 remain open, circuit 3 of limit transmitter 10 is opened, limit switch electronics 90 do not release the filling process.

If a hose tears off completely or partially during the filling process, switch C2 is opened, then no current flows through coil S1, switch C1 opens, limit switch 10 and limit switch electronics 90 interrupt the filling process of the storage container 20, preferably by a known quick-closing valve in the filler neck 5 of the tanker vehicle 19th

If the filling hose 30 is correctly connected to fill a storage container for diesel fuels, a current flows through the filling hose 30, filling pipe 22 and switch C3 in position 2. This causes a current to flow in coil S1 and closes switch C1. The limit indicator electronics 90 enables the filling process.

If the filling hose 30 is not connected correctly, switch C1 remains open, the circuit of the limit indicator 10 remains open, the limit indicator electronics 90 do not release the filling process. If the filling hose 30 tears off in whole or in part during the filling process, switch C1 is opened, the limit indicator electronics 90 immediately interrupts the filling process of the storage container 20.

Fictitious lines 108, 109 indicate an earth contact of the hoses 30, 31.

Fig. 2 shows a substantially similar circuit and functional diagram of the system of FIG. 1 with the difference that additional electromechanical monitoring devices 38, 39 are provided on the connecting couplings of the fittings 17, 18 for filling hose 30 and gas pendulum hose 31. According to an exemplary embodiment shown in FIG. 6, it is a known liquid-tight coupling 15 to 18 at the connection points between filling hose 30 on the one hand and filling pipe socket 5 / filling nozzle 2 on the other hand, or a corresponding gas-tight coupling between the gas pendulum hose 31 on the one hand and the gas pendulum tube 23 / connecting piece 6 on the other. 6 shows a purely exemplary embodiment with a so-called screw coupling, in which hook-shaped claws 26, 27 engage under helical guides 28, 29 and seal the coupling halves with one another by means of a rotary movement. A magnetic switch 44 is arranged on the side, which is closed when the claw 26 is seated correctly, so that the circuit 3 of the limit indicator 10 is closed, as described in relation to FIG. In the event of incorrect assembly of the coupling halves, for example when the claw 26 has come off, the magnet 45 - it can also be a magnetic ring - is lifted out of the intended position by spring force. As a result, the corresponding interruption switches CM1 or CM2 are opened via the magnets M1, M2 (cf. FIG. 2) and the circuit 3 of the limit indicator 10 is interrupted, the switching electronics 90 of which block or interrupt the filling process at the connections on the vehicle. The other switching elements correspond to the system of FIG. 1. In FIG. 3, the previously described electromechanical monitoring devices 38, 39 are connected in series in the circuit 3 of the limit indicator 10. The safety switches C1 and C2 have been omitted.

FIG. 2a shows a circuit variant of FIG. 2. The positive potential of two DC / DC converters 9 is connected to the electrically conductive filling hose 30 or to the gas pendulum hose 31 after an insulating piece 25. The current flows up to an electromechanical scanning 38, 39, which only releases the current flow via reed sensors if the hose connection is correct. The circuit is implemented in each case via a third line 1 'in the limit indicator connecting cable. If the circuit is closed, reed relays d11 and d12 close the limit signal circuit. If the hose breaks or the hose connection is incorrect, d11 and / or d12 open, interrupt the limit switch circuit and immediately end the filling process. Compared to the circuit according to FIG. 2, the only change is that the mass is led to the tanker 19 via an additional line 1 '. In the case of a storage tank for diesel fuel, the reed relay d12 is bridged, since in this case there is no need to monitor a gas pendulum hose. The case is schematically shown in Fig. 2a that a second storage container 20 'with a filling hose 30' or a gas pendulum hose 31 'is arranged. The reed relays d21 and d22 close the limit switch circuit if the circuit is closed via DC / DC converter (not shown in more detail) and via conductive filling hose and gas pendulum hose and after the electromechanical monitoring of the couplings has been released.

Figure 2b shows a further circuit variant. The positive potential of two DC / DC converters 9 is connected after an insulating piece 25 to the electrically conductive filling hose 30 or to the gas pendulum hose 31. The current flows up to an electromechanical scanning 38, 39, which only releases the current flow via reed sensors if the hose connection is correct. The circuit is implemented in each case via a third line 1 'in the limit indicator connecting cable. If the gas pendulum hose 31 is correctly connected when filling petrol, reed relay d11 closes the circuit via filling hose 30. The closed circuit via filling hose 30 outputs the reed relay d10 Power supply of the limit switch 10 free, so that the filling process is released. When filling diesel fuel (without gas oscillation), the switch d11 is bridged in the diesel dome shaft, so that the correctly connected filling hose 30 disconnects the power supply of the limit indicator 10. If the hose is broken or the hose connection is incorrect, reed relays d10 and / or d11 open, interrupt the power supply to the limit switch circuit and immediately end the filling process. Compared to the circuit variant according to FIG. 2a, it has changed that it no longer intervenes in the circuit of the limit transmitter 10, but rather in the power supply of the limit switch 10.

4 shows another embodiment of the filling hose safety system, in which the monitoring of the correct seating of the hoses and couplings, in particular the detachment of a hose when filling storage containers with the aid of structure-borne noise, is detected and the filling process is interrupted immediately. The system is shown with alternative designs in FIGS. 4 and 5.

In the variant according to FIG. 4, there is a limit indicator electronics 90 on the tank vehicle 19 in connection with the on-board battery (not shown) and a sound generator 49 on the filler pipe socket 5 and the sound generator 49 'on the connection socket 6 of the gas pendulum hose 31. This is a mechanical / electrodynamic exciter for sound generation, such as is known per se in the ultrasound range for material examinations or medical diagnostics or other similar purposes. On the opposite side, in the area of the gas pendulum tube 23 and filling tube 22, electro-acoustic acceleration sensors 33 and 34 are arranged, which interact with integrated breakers 35, 36 and, when the frequency range of the sound waves generated changes, activate the acceleration sensors 34, 35, which then activate them the switches 35, 36 open, thereby interrupting the circuit of the limit indicator 10 and suddenly stop the filling process. The acceleration sensors 33, 34 have their own power supply 7, 8 and are otherwise connected to the limit indicator electronics 90.

The acceleration sensors 33, 34 thus monitor the entire resonance space of the filling line 5, 22, 30 or the gas suspension line 6, 23, 31 and are able to spontaneously report any disturbance that occurs, which manifests itself in frequency-dependent damping of structure-borne noise and thus interrupt the filling process. This is done by measuring the transfer function of the overall sound-conducting system such as the outlet nozzle, filling hose, storage tank, piping, gas pendulum hose, connection nozzle, etc. depending on the excited vibrations and storing it digitally in the evaluation electronics. If the transmission of structure-borne noise in this system is interrupted, for example by tearing off a hose, the transmission function changes significantly. This is immediately detected by the evaluation electronics by comparison with the stored target transfer function.

The filling process is controlled with the aid of the limit value transmitter electronics 90. For this purpose, an electrodynamic switching relay is installed in the electrical supply line 3 of the limit indicator 10. If the filling hose 30 and gas pendulum hose 31 are properly connected, the switching relay is switched by the evaluation electronics of an acceleration sensor, ie the contact is closed. The filling process continues until the limit transmitter 10 interrupts the flow of current when it comes into contact with fuel in the storage container 20, and the filling process thus stops immediately. If the filling hose 30 or gas pendulum hose 31 tears off, the structure-borne sound transmission function changes; a sensor 33 or 34 responds, interrupts the current flow by switching a switching relay 35, 36, and the limit transmitter electronics 90 ends the filling process without delay.

A second variant of the functional security by means of structure-borne noise is shown as an example in FIG. 5. In this variant, the electroacoustic, dynamic sound generator 49 is fixedly mounted on the tanker 19, at its outlet connection 5 for fuels. The structure-borne noise generated in a certain frequency spectrum is transmitted via the filler pipe socket 5, the filler hose 30, the filler pipe 22 and further through the interior of the storage container 20 through the gas pendulum pipe 23 in the dome shaft 21, further through the gas pendulum hose 31, and the connecting piece 6 on the vehicle 19 passed to acceleration sensor 48. The acceleration sensor 48 is able to detect the incoming structure-borne noise. It includes an evaluation electronics 90, which determines, depending on certain frequency windows, that the structure-borne noise has actually reached the filling hose 30 / gas pendulum hose 31.

This decision is possible with the help of the frequency window, since different transmission functions are decisive depending on the path of structure-borne noise, i.e. the amplitudes of the structure-borne noise are damped depending on the frequency.

The respective transfer function is recorded by measurement technology as a function of the excited vibrations and stored digitally in the evaluation electronics. If the transmission of structure-borne noise in this chain is interrupted by tearing off a hose 30, 31, the transmission function changes significantly in each case. This is detected without delay by the evaluation electronics of the acceleration sensor 48 and converted into a control pulse. This opens the interruption switch 43, which then interrupts the circuit 3 (FIG. 1) of the limit indicator 10 and thus either does not release the filling process or stops it immediately.

The connection of the limit switch 10 to its power supply 1, 2 or to the limit switch electronics 90 is formed by means of a plug 4 in the dome shaft 21. This relates both to the embodiment according to FIG. 5 and according to FIGS. 1 to 4.

7 shows a diagram of an electromechanical monitoring of the seat from the dipstick. Such monitoring is necessary because experience in practice shows that the operating personnel pull the dipstick 13 present on the storage container 20 from the guide tube 12 during the refilling process, because as a result of this the filling process is reduced by up to 20 to 25 by reducing the pressure difference of the gas volume displaced during the refilling process % is shortened. As a result, a large part of the volatile constituents of the fuel do not flow back to the tank truck 19, as intended, through the connected gas pendulum hose 31, but escape into the environment via the dipstick opening of the guide tube 12, which is to be prevented, however, by the gas pendulum monitoring according to the operating instructions. To ensure this, an electromechanical monitoring of the dipstick seat is provided, with the aid of which the filling process is only released when the dipstick 13 is inserted into the guide tube 12 and its head 14 is properly locked.

For this purpose, a fault-free monitoring device 40 is attached to the guide tube 12, which, when the dipstick 13 is not properly seated and / or locked, interrupts the circuit 3 of the limit indicator 10 and switches off the refilling process on the tanker 19.

The device can preferably have an electromechanical scanning device 40 attached to the guide tube 12, with which, when the dipstick 13 is properly locked by a tilting, rotating or tilting-rotating movement or the like, a magnet 41 arranged on the head 14 of the dipstick 13, as shown 8 in cooperation with a magnetic switch 42 attached to the guide tube 12 activates this as soon as the magnet 41 has reached approximately the horizontal plane of the magnet (reed) switch 42. The head 14 of the dipstick 13 is then properly locked in the guide tube 12. The magnetic switch 42 closes via an integrated in the circuit 3 of the limit switch 10 Secondary circuit 130, the circuit 3, with current flowing via the limit transmitter 10 and this releases the transfer process.

Another embodiment of monitoring the dipstick seat by a contact bridge is shown in FIG. 9. At least in the area of the seat of the dipstick head 14, the guide tube 12 is made of non-conductive material, preferably plastic, and is designed with built-in contacts 131, 132, which interrupt or close the secondary circuit 130 and, via this, the circuit 3 of the limit indicator 10. The head 14 of the dipstick 13, on the other hand, consists of electrically conductive material such as brass, the conductivity of which, when the head of the dipstick 13 is correctly locked, the secondary circuit 130 and at the same time the circuit 3 is closed and the refilling process is released.

Another possibility of monitoring the correct seating of the dipstick 13 is the use, for example, of a light barrier, the construction of which requires no further explanation. Furthermore, the monitoring can also be carried out by a structure-borne noise generator in cooperation with a target transfer function stored in the electronics 90 of the limit transmitter 10. The effect of a changed sound transmission or resonance function is used when the dipstick 13 is locked or unlocked.

In all of these embodiments, the filling process is interrupted without delay as soon as the dipstick 13 or the dipstick head 14 is not properly locked in the region of the upper opening of the dipstick guide tube 12.

10 to 13, on the one hand, an electrical circuit diagram (FIG. 10) and, on the other hand, electromechanical monitoring elements and switching arrangements (FIGS. 11 to 13) on hose coupling parts with integrated monitoring elements are shown.

FIG. 10 shows that in line 101 via DC / DC converter 9 between the negative potential of the voltage supply 1, 2 and the positive potential of the limit value transmitter 10, as can be seen in detail from FIGS. 11a to 11d, the coupling part 52 an interruption (reed) switch 62, 64 each on the tanker connecting piece 5 and the coupling part 54 on the filling pipe 22 of the storage tank 20, and an interruption (reed) on the tanker connection piece 6 and the coupling part 58 on the gas pendulum tube 23 of the storage tank 20 Switch 66, 68 is assigned, and the corresponding connection couplings 72, 74 of the filling hose 30 and the connection couplings 76, 78 of the gas shuttle hose 31 each have a scanning permanent magnet 82, 84 or 86, 88, each of which is firmly integrated in the connection coupling of the hose is assigned, the reed switches 62 to 68 being connected in series with one another in accordance with the circuit diagram of FIG. 10 via secondary circuit 131, 132 and un the circuit 3 of the limit indicator 10 are integrated, and this is only closed after all coupling parts 52 to 58 have been properly connected to connection couplings 72 to 78 and the decanting process is released.

This can be seen in detail from FIGS. 11a to 11d. Thereafter, the reed switches 62, 64, 66, 68 are each arranged on the metallic connecting piece 5, 6 of the tank truck 19 and the metallic connecting piece 22, 23 of the filling pipe 22 and the gas pendulum pipe 23 on the storage tank 20, whereas those with hook-shaped claws 26, 27 and with parts 72, 74, 76, 78 which can be opened and closed and which can be locked in the folded-down position with handles 89 are provided on the hose coupling at both hose ends. The coupling part with the hook-shaped claws and the counterpart of the coupling at the associated hose end are currently located on the tanker connection. For the new monitoring system, both coupling parts have to be exchanged if the hose connection on the tanker is to be monitored. If only the hose connection in the dome shaft is to be monitored, the two coupling parts need not be interchanged. At the end of the hose belonging to the cathedral shaft is as sketched Coupling part with the hook-shaped claws 74, 78 already at the end of the hose.

The reed switches 62, 64, 66, 68 are integrated in the circuit 3 of the limit indicator 10, each via secondary circuits 131, 132 and are opened without the presence of a magnetic field. When a permanent magnet 62, 64, 66, 68 approaches due to a rotary movement of the corresponding fittings, the reed switches are switched and thus the circuit 3 of the limit indicator 10 is closed. The monitoring of the individual connections between hose 30, 31 and tank truck 19 or storage container 20 is connected in series and introduced into circuit 3 of the limit indicator, so that this circuit 3 is closed only after all couplings 15, 16, 17, 18 have been connected. Individual connections can be monitored either by reed switches and several permanent magnets, by several reed switches and one permanent magnet or by several reed switches and several permanent magnets. If there are several reed switches to monitor the connection of a coupling, they must be connected in parallel. The clutches are closed and thus the approach between permanent magnets and reed switches takes place by fitting and laterally rotating the coupling parts 73, 74, 76, 78 and locking the lever 89 in the folded position. This can be seen in detail from FIGS. 12a, 12b and 13.

FIG. 12a shows on the filling hose 30 the rotatable coupling element 72 with the foldable hand lever 89 and the claw-shaped holding elements 26 and 27. These engage in helical guides 28, 29 of the coupling piece 52 fastened to the filling pipe socket and are indicated by a rotary movement, symbolized by an elliptical arrow, locked and sealed. 12a and 12b, the clutch 15 is still open. The permanent magnet 82 with its magnetic field is then outside the field area of the reed switch 62, which is then still open and keeps the entire circuit of the limit indicator 10 interrupted.

13 shows the clutch 15 in the closed state, in which case the permanent magnet 82 is so close to the reed switch 62 that it switches as a result of the magnetic field and closes the circuit of the limit indicator 10. This then releases the transfer process.

According to the description of the exemplary embodiments shown and explained in FIGS. 1 to 13, the method which can be assigned to the functional principle of the system according to the invention can be described as follows: by means of a safety device connected to the existing fill level monitoring system with limit transmitter for the fill level in the storage container, which includes existing system elements, If the system elements malfunction, an upper tank level is simulated by changing the electrical resistance, or an unconnected level indicator is displayed by interrupting the circuit, after which the level sensor electronics interrupts the refilling process. This system is used, in particular, for monitoring and securing a refilling process between a tanker 19 for fuels and an underground storage container 20, which has a filling pipe 22 and a gas pendulum pipe 23 in a dome shaft 21, which, on the one hand, during the refilling process through a filling hose 30 and a gas pendulum hose 31 to a filling device 5, 6 with connection fittings 15, 16 of the tanker 19 and on the other hand to the filler pipe 22 and gas shuttle pipe 23 of the storage container 20 can be connected and to the tanker 19 a voltage supply 1, 2 via a DC / DC converter 9 forming a potential-free circuit 3 the filling device 5, 6 switching limit transmitter 10 with electronics 90, which prevents or interrupts the filling process when a predetermined fill level 11 in the storage container 20 is reached, the circuit 3 of the limit transmitter 10 or its electronics 90 being switched so that they fill the fill Release gear in a closed circuit depending on resistance and / or do not release or interrupt when the circuit is interrupted and the method is characterized in that the circuit of the limit switch 10 and / or its electronics 90 is connected in series with at least one additional circuit arrangement which is associated with the filling hose 30 and / or the pendulum hose 31 and / or the fittings 15 to 18 and which directly or indirectly mechanically / electrodynamically interacts with them and which keeps the circuit of the limit indicator closed as long as the filling hose 30 and / or the gas pendulum hose 31 correctly with their fittings 15 to 18 on the storage container and / or vehicle connections 5, 6; 22, 23 are connected or not interrupted, and the circuit is interrupted as soon as fittings 15 to 18 or hoses 30, 31 are not correctly connected or hoses are torn off in whole or in part.

Finally, the use of the system according to claims 1 to 9 is used to monitor and secure a transfer operation between a tanker 19 and an underground storage container 20 and in particular to immediately interrupt the transfer operation in the event of breakage and / or incorrect connection of filling hose 30 or filling hose 30 and gas pendulum hose 31

Another use of the monitoring system according to the invention relates to the filling of underground storage containers 20 with a central filling shaft. This means that all filling tubes 22 with associated limit switches 10 and generally with two gas pendulum tubes 23 are accommodated in a filling dome 21. The particular problem is that it is no longer possible to assign the gas pendulum tubes 23 to the respective filler tubes 22 or limit switches 10. As a rule, there are up to six filling tubes 22 with associated limit switches 10. Here, the filling hose safety device is based on the same principle as with the single filling dome. If filler hose 30 with associated limit transmitter 10 and a gas pendulum hose 31 are correctly connected, then the circuit is constructed in such a way that the circuit applied via the gas pendulum hose closes via the minus potential of the limit switch circuit or via a third line 1 'in the limit switch connection cable. The electrical connections of this gas pendulum hose 31 to all other limit indicators 10 is interrupted by reed relays that are switched by the existing circuit. If, for example, the second filling tube 30 'with associated limit transmitter 10' and the second gas pendulum hose 31 'are connected, the limit transmitter circuit closes, as described above, and in turn all other electrical connections to the remaining limit transmitters are interrupted.

The embodiments of the invention shown in FIGS. 1 to 13 are only to be understood as examples. In particular, the scanning elements 38, 39 (FIG. 2, FIG. 3) are left to the designer's professional judgment with regard to their design, for example with regard to the arrangement and design of the switching elements 44, 45. The same applies with regard to the design and arrangement of acceleration sensors 48 and sound generators 49. The functionality of the system is significantly increased by a redundant design of the switching elements, for example the limit indicator 10.

The invention optimally fulfills the task set out above, in particular because it is ensured that the filling process for the storage container is only possible if the limit indicator, filling hose and gas pendulum hose are connected in a dome shaft.

Claims (22)

System for monitoring and securing the refilling process between a tank vehicle (19) and a particularly underground storage container (20) or another tank vehicle or between storage containers, at least one hose (30, 31) using a refilling device (5, 6) with connection fittings (15 , 16), for example on the tanker (19), can be connected to at least one transfer tube (22, 23), for example, the storage container (20), and the monitoring system with a voltage supply (1, 2) forms a circuit (3) forming the transfer device ( 5, 6) has a switching level limit switch (10) on the storage container (20),
marked by
at least one fail-safe safety device connected to the existing fill level monitoring system (1, 2, 3, 10), which interrupts the circuit (3) of the limit indicator (10) in the event of a faulty refilling process and this switches off the refilling device on the tank vehicle (19). System for monitoring and securing the refilling process between a tank vehicle (19) and an in particular underground storage container (20) or another tank vehicle or between storage containers, which in particular in a dome shaft (21) has at least one filling tube (22) and at least one gas pendulum tube (23) has and this through a filling hose (30) and a gas pendulum hose (31) on the one hand to a filling device (5, 6) with connection fittings (15, 16), for example. of the tanker vehicle (19) and, on the other hand, to the filling pipe (22) and gas pendulum pipe (23), for example the storage container (20), the system having at least one voltage supply (1, 2) for the tanker vehicle (19) via at least one DC / DC Converter (9) forming a potential-free circuit (3) has a limit switch (10) which switches the filling device (5, 6) and has electronics (90) which prevent the filling process when the filling level (11) in the storage container (20) is reached , interrupts or terminates, the circuit of the limit indicator (10) or its electronics (90) having switching means which are switched and designed in such a way that they release the filling process when the circuit is closed and do not release or interrupt it when the circuit is interrupted,
characterized,
that the circuit (3) of the limit indicator (10) and / or its switching electronics (90) at least one associated with the filling hose (30) and / or gas pendulum hose (31) and / or their fittings (15 to 18) and with these directly or via mechanically / electrodynamically stimulable means (33 to 36) interacting additional circuit arrangement, which keeps the circuit (3) of the limit indicator (10) closed, as long as the filling hose (30) or filling hose (30) and gas pendulum hose (31) are correct with their Fittings (15 to 18) are connected to the storage container and / or vehicle-side connections (5, 6; 22, 23) or are not interrupted, and the circuit (3) is interrupted as soon as fittings (15 to 18) or hoses (30, 31 ) are not connected correctly or hoses (30, 31) are torn off in whole or in part. System according to claim 2,
characterized,
that the additional circuit arrangement comprises the following features: - A line (100) between the plus potential of the voltage supply (1, 2) of the tanker (19) via a DC / DC converter (50) and the filling hose (30) or filling pipe socket (5); - A line (101) between the minus potential of the DC / DC converter (9, 50) and the minus potential of the limit value transmitter (10); - A line (102) connected to the plus potential of the filling tube (22) and branching into two line branches (103, 104), branching off from these - a branch (103) with a relay coil (S2) with switch (C2) and connection to an insulated region of the gas pendulum tube (31) or gas pendulum tube (23) arranged between the insulations (24, 25); - a branch (104) with selector switch (C3) and subsequent line (105) for the plus potential with connection either directly or via switch (C2) to the coil (S1) with switch (C1); - A connection of the coil (S1) with the line (106) to the plus potential of the circuit from the limit indicator (10), the line via DC / DC converter (9) between the voltage supply (1, 2) and the switch (C1) is connected and - The limit indicator (10) between the switch (C1) and via DC / DC converter (9) the plus potential of the voltage supply (1) is connected and - The plus potential of the insulated gas pendulum hose (31) is connected via DC / DC converter (9) to the minus potential of the voltage supply (1, 2) via a line (107). System according to claim 2,
characterized,
that the selector switch (C3) has at least two positions (item 1 / item 2) for selecting different filling media, for example gasoline or diesel fuel (Fig. 1). System according to claims 1 to 4,
characterized,
that in the line (101) via DC / DC converter (9) between the negative potential of the voltage supply (1, 2) and the positive potential of the limit indicator (10), on the one hand, a coupling (17) between the filling tube (22) and the filling hose (30) assigned interruption switch (CM1) and, on the other hand, connected in series with this, an interruption switch (CM2) assigned to the coupling (18) between the gas pendulum tube (23) and gas pendulum hose (31), each with a mechanical / electrical scanning (38, 39) of the clutches (17, 18) is arranged to cooperate, the scans (38, 39) monitoring the correct fit of each clutch (17, 18) and, in the event of a faulty fit, using magnets or coils (M1, M2) the corresponding interruption switches (CM1) or Open (CM2) and interrupt the circuit (3) of the limit indicator (10), the electronics (90) of which block or interrupt the filling process. System according to claim 5,
characterized,
that the electro / mechanical scanning (38, 39) with the clutch (17, 18) mechanically cooperating magnetic switch (44), the incorrectly seated clutch (17, 18) or the magnetic ring (45) or the magnetic switch (44) opens the corresponding interruption switch (CM1, CM2) and interrupts the circuit (3) of the limit indicator (10). System after at least one
of the preceding claims 1 to 6,
characterized,
that the plus pontential of two DC / DC converters (9) is connected to the electrically conductive filling hose (30) or gas pendulum hose (31), each after an insulating piece (25), which in turn is connected to an insulating piece (24) and mechanically / electrical scanning (38, 39) of the couplings (17, 18) and via reed relays (d11, d12) to the common ground line or to a third line (1 ') in the limit indicator connection cable and the third line (1') is connected to the negative potential of the DC / DC converter (9), the reed relays interrupt the limit switch circuit if the hoses are not connected properly, thus ending or not releasing the filling process. System after at least one
of the preceding claims 1 to 6,
characterized,
that the plus potential of two DC / DC converters (9) is each connected to the electrically conductive filling hose (30) or the gas pendulum hose (31) after an insulating piece (25), which in turn is mechanically connected to an insulating piece (24) / electrical scanning (38, 39) of the couplings (17, 18) and via a common reed relay (d11) on a third line (1 ') in the limit indicator connection cable and the third line (1') with the minus potential of the DC / DC converter (9) is connected and that in the circuit (9, 30, 1 ') via the filling hose (30), preferably between the DC / DC converter (9) and filling hose (30), a reed relay (d10) is arranged, which is connected to the power supply (2) of the limit value transmitter (10) (switch d10), the reed relay (d10) enabling or otherwise interrupting the power supply (2) of the limit value transmitter (10) when the filling hose (30) is correctly connected. System according to one or more of claims 1 to 8,
characterized,
that in the line (101) via DC / DC converter (9) between the negative potential of the voltage supply (1, 2) and the positive potential of the limit transmitter (10), the coupling part (52) on the tanker connector (5) and Coupling part (54) on the filling pipe (22) of the storage tank (20) at least one each Interruption (reed) switch (62, 64), and the coupling part (56) on the tanker connector (6) and the coupling part (58) on the gas pendulum tube (23) of the storage tank (20) each have at least one interruption (reed) switch (66, 68) and the corresponding connection couplings (72, 74) of the filling hose (30) and the connection couplings (76, 78) of the gas pendulum hose (31) each have a scanning permanent magnet (82, 84 or 86, 88) It is assigned that the reed switches (62 to 68) are connected in parallel with one another, if necessary, via secondary circuits (131, 132) and are integrated in series in the circuit (3) of the limit indicator (10), and this only after all coupling parts have been properly connected ( 52 to 58) with connecting couplings (72 to 78) closed and the transfer process is released. System according to claim 1 or 2,
characterized,
that the circuit (3) of the limit indicator (10) and its electronics (90) an additional circuit arrangement with both the filling tube (22) and the gas pendulum tube (23) in the dome shaft (21) associated, with integrated break switches (35, 36) interact Electro-acoustic acceleration sensors (33, 34), and that in each case an electrodynamic sound generator (49) is arranged on the filler pipe socket (5) of the tanker vehicle (19) and / or occasionally on the vehicle-side connection socket (6) of the gas pendulum hose (31). System according to claim 10,
characterized,
that the acceleration sensors (33, 34) interrupt the circuit (3) of the limit indicator (10). System according to claim 1 or 2,
characterized,
that a sound generator (49) on the vehicle-side filler neck (5) and an electro-acoustic acceleration sensor (48) on the connecting piece (6) for the gas pendulum hose (31) is arranged and integrated into the circuit (3) of the limit indicator (10) and has interrupter switch (43) which is designed to cooperate therewith. System for monitoring and securing the refilling process between a tanker vehicle (19) and an in particular underground storage container (20) according to one or more of claims 1 to 12, wherein the storage container (20) in particular in the dome shaft (21) in addition to a filling pipe (22) and a gas pendulum tube (23) has a guide tube (12) for a dipstick (13),
characterized,
that a fault-free monitoring device (40) is attached to the guide tube (12), which keeps the circuit (3) of the limit indicator (10) closed when the dipstick (13) is properly seated and / or locked and releases the decanting process and when it is pulled or not proper seating and / or locking of the dipstick (13) interrupts the circuit (3) of the limit indicator (10) and this switches off the refilling process on the tank vehicle (19). System according to claim 13,
marked by
an electromechanical scanning (40) attached to the guide tube (12), with which, when the dipstick (13) is properly locked by a tilt, turn or tilt-turn movement or the like, is arranged on the head (14) of the dipstick (13) Magnet (41) in cooperation with a magnetic switch (42) attached to the guide tube (12) activates it and thereby closes the electrical circuit (3) by means of a secondary circuit (130) integrated in the circuit (3) of the limit indicator (10), as a result of which the refilling process is released. System according to claim 14,
characterized,
that the guide tube (12) made of non-conductive material such as plastic and is formed with built-in contacts (131, 132) which interrupt the secondary circuit (130) and via this at the same time the circuit (3) of the limit indicator (10), and that the head (14) of the dipstick (13) consists of electrically conductive material such as brass, the conductivity of the secondary circuit (130) and at the same time the circuit (3) is closed and the decanting process is released by its conductivity when the head of the dipstick (13) is correctly locked. System according to claim 13,
characterized,
that the monitoring device (40) for switching the secondary circuit (130) on or off has means such as a light barrier or a structure-borne sound generator in cooperation with a TARGET transfer function stored in the electronics (90) of the limit indicator (10). System according to one or more of claims 13 to 16,
characterized,
that the secondary circuits (130 to 132) are connected in series with the circuit (3) of the limit indicator (10). Method for monitoring and securing a refilling process between a tank vehicle (19) and an in particular underground storage tank (20) or another tank vehicle or between storage containers, in particular in a dome shaft (21) at least one filling pipe (22) and at least one gas pendulum pipe (23) are present and these through a filling hose (30) and a gas pendulum hose (31) on the one hand to a filling device (5, 6) with connection fittings (15, 16) for example the tanker vehicle (19) and on the other hand to the filling pipe (22) and Gas pendulum tube (23), for example of the storage tank (20), can be connected and at least one voltage supply (1, 2) for the tanker vehicle (19) forms a potential-free circuit (3) with a limit switch (10) with electronics that switches the filling device (5, 6) (90), which prevents or interrupts the filling process when a predetermined fill level (11) in the storage container (20) is reached, the circuit (3) of the limit indicator (10) or its electronics (90) being switched so that they complete the filling process release when the circuit is closed depending on resistance and / or do not release or interrupt when the circuit is open,
characterized,
that the circuit (3) of the limit indicator (10) and / or its electronics (9) with at least one of the filling hose (30) and / or gas pendulum hose (31) and / or their fittings (15 to 18) and / or the dipstick ( 13) associated with and directly or indirectly mechanically / electrodynamically interacting additional circuit arrangement is connected in series, which keeps the circuit of the limit indicator closed, as long as the dipstick (13) sits properly and / or is locked and / or as long as the filling hose (30) and / or gas pendulum hose (31) correctly connected or not interrupted with their fittings (15 to 18) to the storage container and / or vehicle connections (5, 6; 22, 23) and interrupts the circuit as soon as fittings (40, 15 to 18) or hoses (30, 31) are not correctly connected or hoses (30, 31) are torn off in whole or in part or the dipstick (13) is not seated correctly or is not locking lt is. Use of the system according to claims 1 to 17,
for monitoring and securing a refilling process, in particular of fuels between a tanker (19) and an underground storage container (20) and in particular for immediately interrupting the refilling process in the event of breakage and / or not correct connection of filling hose (30) or filling hose (30) and gas pendulum hose (31) or incorrect seating or locking of the dipstick (13). Use of the system according to at least one of claims 1 to 17 for monitoring and securing a refilling process, in particular of fuels between a tanker vehicle (19) and a storage tank (20) in the case of several, in particular underground storage containers (20, 20 '...), wherein whose all filling pipes (22, 22 '...) with associated limit value transmitter (10, 10' ...) and at least one, usually two gas pendulum pipes (23, 23 ') are accommodated in a common filling dome (21) and where the electrical connections of a correctly connected gas pendulum hose (31) to all other limit sensors (10) are interrupted by reed relays, which are switched by the existing circuit, if at least one filling tube from the majority of the filling tubes (22, 22 '..) with associated Limit switches (10, 10 '...) and at least one gas pendulum tube (23, 23') are correctly connected to their filling hose (30) or gas pendulum hose (31) and the limit switch circuit s is closed. Hose connection in a system for monitoring and securing the refilling process between a tank vehicle (19) and an in particular underground storage container (20) or another tank vehicle or between storage containers, with at least one hose (30, 31) using a refilling device (5, 6) Connection fittings (15, 16), for example on the tanker (19), can be connected to at least one transfer tube (22, 23), for example, the storage container (20), and the monitoring system forms a circuit (3) with a voltage supply (1, 2) the filling device (5, 6) has a switching level limit switch (10) on the storage container (20),
characterized,
that in a line (101, 30, 31) via at least one DC / DC converter (9) between the negative potential of the voltage supply (1, 2) and the positive potential of the limit transmitter (10) the coupling part (52), for example Tank truck connection piece (5) and the coupling part (54), for example on the filling pipe (22) of the storage tank (20) each at least one interruption (reed) switch (62, 64), and the coupling part (56) on the tank truck connection piece ( 6) and the coupling part (58) on the gas pendulum tube (23) of the storage tank (20) are each assigned at least one interruption (reed) switch (66, 68), and the corresponding connection couplings (72, 74) of the filling hose (30) and The connection couplings (76, 78) of the gas pendulum hose (31) are each assigned a scanning permanent magnet (82, 84 or 86, 88) that the reed switches (62 to 68) via side circuits (131, 132) possibly parallel to each other switched and integrated in series in the circuit (3) of the limit indicator (10) d, and this is only closed after all coupling parts (52 to 58) have been properly connected to connecting couplings (72 to 78) and the decanting process is enabled or the flow of current via the connecting lines (30, 31) only after all coupling parts (52 to 58) have been properly connected with connection couplings (72 to 78), whereby the reed relays (d11 and d12) close the limit switch circuit (3), thus releasing the filling process, alternatively the reed relay (d10) releases or interrupts the power supply to the limit switch. Hose connection in an arbitrarily designed system for monitoring and securing the refilling process between a tank vehicle (19) and an in particular underground storage container (20) or another tank vehicle or between storage containers, at least one hose (30, 31) using a refilling device (5, 6 ) with connection fittings (15, 16) consist of at least two coupling parts (52, 54, 56, 58) with connection couplings (72, 74, 76, 78),
characterized,
that the coupling part (52) on the tanker connection piece (5) and / or the coupling part (54) on the filling pipe (22) of the storage container (20) each have at least one interruption (reed) switch (62, 64) and / or the coupling part (56) on the tanker connection piece (6) and / or the coupling part (58) on the gas pendulum tube (23) of the storage container (20) is assigned at least one interruption (reed) switch (66, 68), and the corresponding connection couplings (72, 74) of the filling hose (30) and / or the connection couplings (76, 78) of the gas pendulum hose (31) is assigned a scanning permanent magnet (82, 84) or (86, 88) which is fixed in the respective connection coupling of the associated one Hose (30, 31) is integrated.

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