DE2110196A1 - Autonomous facility for storing and using electrical energy - Google Patents

Description

Autonomous facility for storing and using electrical energy

The invention relates to an autonomous storage device and use of electrical energy, which should ensure a high level of functional reliability "

There are known devices _for the remote control of one or more secondary ensure installations or aggregates of a main or pilot installation. In certain cases, the secondary unit or the secondary post is very far away from the main unit and for practical reasons it may be necessary not to provide any material cable connection between the various installations. The connections are then made through the transfer

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acoustic and / or electromagnetic waves produced, the choice of the type of transmission from the medium in which which installations are located depends.

In principle, there is no particular difficulty in supplying the main or control installation with energy, which is easily accessible in all cases. On the other hand, it becomes problematic if the secondary installations, when they are difficult to access, need to be supplied with energy or when it becomes necessary to use them To provide installations with an autonomous energy source. their function over considerable periods of time, for example several years, made possible »

A first possibility would be to use the Selaindary installation, when it is brought to its location, a collector battery. for electrical energy to be allocated to its output would be sufficient to the functional autonomy of the secondary installation ensure during the desired period. With the current state of the art, this solution is absolute not to be taken into account, since the space requirement and weight of the energy source would be unacceptably large and this would also be difficult to handle and bring to their place.

The development or provision of autonomous power generators such as the isotope power generators, the Fuel cells etc. seem to be a more suitable solution to deliver. In fact, they can take up little space! Generators operating times of several Years have. So you can see their importance, which they have for the supply of installations, which are difficult to access Places are located with energy. These installations can, for example, be automatic meteorological high mountain atations be; however, the following explanations are given by way of example only - as related applications on secondary installations, which are supported by a main

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Installation aua are remotely controlled and are assigned wellheads which are at depths that are several hundred meters can reach, immerse themselves and which are also difficult to access · borrowed.

Incidentally, in this belBpielsweiaen Anwendungefall the omission of material connections wipe the Hauptinetalla tion and the one or more secondary installations important because these material compounds of the reason of the often considerable disturbances (obstacle in the _water's loss of time at a fraction, need for Überwacliungs- and maintenance operation etc .) are. Hire investment costs are no longer negligible.

Unfortunately, the currently available isotopic power generators provide only very small electrical outputs (several tens of watts) and can not be used for direct supply of organs actuating elements such as _f of slides of a standing in production wellhead where it is necessary on services of several a thousand watts. However, it is possible to use an autonomous electric generator to feed the energy to an accumulator ^ which stores this energy and then makes it possible to use the stored energy to operate organs that require considerable power.

One of the objects of the invention is to provide an autonomous device for storing and utilizing electrical energy using a relatively weak autonomous power generator but capable of operating for long periods of time , such as an Ieotope generator or a fuel cell.

10,983-9 / 1 U.S.

According to the invention, an autonomous device for storing and using electrical energy of the type specified above is to be proposed, which has organs for automatic monitoring of a favorable function of the device and possibly safety organs to regulate the installation arrangement equipped with this device _f , these safety organs being designed that in the event of a failure of the energy production facility they trigger the transfer to the safety position. ""

The autonomous device according to the invention for storing and Take advantage of the electrical energy supplied by an autonomous generator of low power, which makes it possible to use electrical Power to feed an installation equipped with at least one organ to be controlled, this being a safety position has, and with facilities zi ^ r control this organ is characterized by in combination

a) a main collector battery * (accumulator) fttr electrical power,

b) Means to connect this generator to the main battery in order to charge the latter by an electrical supplied by this generator Enable electricity

c) Means for connecting this main accumulator to this organ to be controlled, which makes it possible is to supply this organ with a control current, the connecting devices by the control devices this organ are operated,

d. Control devices designed so that they periodically operate these connecting devices, so that the charge of this collector or this Battery is kept above a specified value, which is sufficient to control the if necessary Bring the organ to a safe division,

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e) devices for regulating the current supplied by this generator, which are designed so that they provide an impulse for anomalous values of this current and

f) Safety devices associated with the control devices and are connected to the actuating devices and are designed so that, upon receipt of this Bbpulse on the one hand actuate the control devices of this organ in order to move the latter into its safety position to bring and on the other hand to act on these actuating devices to the connecting devices keep su open and the charging current of this main collector or interrupt this main battery.

The invention is characterized according to an advantageous embodiment characterized in that the connection devices of this generator with the main collector are designed as multi-way connections each of which has at least one intermediate barrier element for the electrical energy supplied by the generator, the connecting means, each intermediate element connect on the one hand with the generator and on the other hand with the main collector .. to charge the latter with one to enable current supplied by this intermediate element; and that these actuating devices are a programming element include that is able to periodically and separately the connection of each intermediate element on the one hand with the Generator and on the other hand to connect to the main collector battery according to a Verblnelungsprogramra that is selected can be from a group of different programs, which this programming element can deliver at will is able and that regulating devices for the by everyone Power supplied by the intermediate element with power supply units connected and able to deliver a signal if an anomaly occurs in at least one of the pathways, whereby the signal actuates these actuating devices and that way auo dem ijfcromlnreia auösohni tefc,

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⁴ BAD OBiQtNAt

on which the anomaly occurred and the program modified this programming element = by the load of the To enable main collector battery via the other ways.

An example embodiment of the invention will now be explained in more detail with reference to the accompanying drawings, in which

FIG. 1 shows the basic circuit diagram of an autonomous device for generating energy 3 tilts;

FIG. 2 schematiaeh shows an embodiment according to FIG Invention again;

and Figures 3, 4 and 5 show -different charging and discharging programs for the auxiliary batteries-

In the following, the use of the device according to the invention for supplying electrical energy to actuators is considered, which are provided on a submerged wellhead in production and which comprises an acoustic transceiver device of any known type and which is of a main installation, which beispielsv / else on the surface on a floating installation provided iat _s of remotely controlled and several kilometers from the well head can be removed. In this case, the organs to be controlled can be slide valves, whereby it is desired that; any postponement of the units leads to the closing of the slide valves for obvious safety reasons. " that uncontrolled production is avoided.

Figure 1 shows schematiach an autonomous installation for the storage and use of electrical energy, which is fed by an autonomous generator of reduced HetütuaK beLripielöv / eise an Ifioboyenntrouiiieitoratoi 'or a> r fuel silo _{and the like}

BATH

10 9 8 3 9/1145

The low-power electrical generator is shown at 1 and consists, for example, of an isotope current generator which _{delivers an electrical power of 25 watts at a current strength of the order of magnitude of O V} 3A. This generator is connected via a cable 6 and an interrupter 4 to an electrical auxiliary collector battery shown schematically at 2. This battery is itself connected to a main battery 5 made up of large-capacity electric accumulators via a cable 7 and an interrupter 5. The battery 3 supplies the load or consumer circuit 8 with the energy it needs via the cable 9.

The use of an auxiliary battery 2 justifies itself from the fact that the generator 1 cannot operate the main battery 3 directly. As is known to those skilled in the art, the states of charge (current value _f "charging time, etc.) are functions of the capacity of the battery to be charged. At least one auxiliary battery is used, the capacity value of which has been selected so that, on the one hand, its discharge current is compatible with the charge current of the main battery and on the other hand, their charging current is compatible or incompatible with the value of the current to the autonomous electric generator can deliver.

Of course, if the value of the capacity of the main battery 3 is very high, this may result in the use of a plurality of auxiliary batteries 2 connected in series in order to satisfy the charge requirements of each battery; the Arbelte principle of the arrangement is not affected.

The way it works is simple. If you close the breaker 4-, the generator 1 supplies the auxiliary battery 2 with electrical energy which is stored. If the battery 2 is charged, so one opens the breaker 4, then closes the breaker 5 in such a way that the stored in the auxiliary battery 2 Energy can be transferred to the main battery 3.

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The cycle described in this way is repeated regularly and man thus collects in the battery 3 the food for the consumer «- Kreiees necessary performance.

FIG. 2 schematically shows an autonomous storage device and use of energy? which is intended to control the organs of a submerged production head that is connected to a

Acoustic (ultrasonic) remote controlled transmitter-receiver Is provided.

In this figure, a distinction is made essentially between 3 circles;

the power or consumer circuit shown in dashed lines,

"the charging circuit j which supplies electrical energy and in is shown in solid continuous lines,

and the safety circuit shown in thin lines "

The power circuit includes a main battery 3 from electrical Large capacity accumulators, this battery 5 supplies the remote control transceiver 9 with energy via the Cable 10 as well as all of the electronic devices which will be described later and which serve to make the operation of the Ensure device. For the sake of clarity in the figure, that alone is the main battery 3 Cable 10 connecting to the transmitter-receiver 9 is shown.

The battery 3 thus feeds drive elements 8 for actuating organs, not shown, of the wellhead, in particular of slide valves. For the sake of a simplified representation, a single motor element is shown which can occupy two different positions, for example an open position (0), which is obtained when the Excitation via the cable 11 and the interrupter 12 takes place and a closed position (F) when the excitation is via the cable 13 and the interrupter 14 takes place. Calibration elements 15 and 16 for the electrical current protect the element 8 against unintentional excessive current values.

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The interrupters 12 and 14 are actuated by an actuator 17. When the latter receives a corresponding control signal via the cable 18, which has been supplied by the remote control transmitter-receiver 9 after a command message has been received from the main installation * The actuator 1? can also receive, via cable 33, control signals supplied by a security system described later -Receiver 9 to transmit a coded signal via the cable 35, which indicates the new state of the drive element 8 concerned.,

The charging circuit for the main battery 3 comprises an autonomous isotope source of low power 1 (for example 25 watts), which supplies an electrical direct current of low current strength (for example of the order of 300 mA). The electrical current supplied by the generator 1 is kept at a constant value by a current regulator 19 which is designed such that it determines the presence of a short circuit in the discharge circuit of the generator 1. A device 20, which indicates that the circuit is open, is placed in series in the discharge circuit of the generator 1 and enables ea, the absence of output from the generator 1. Determine currents au. A current measuring device 21 is also placed in series in the discharge circuit of the generator 1 * The usefulness of the devices 19, 20 and 21 is indicated below. The output of the current measuring device /? 21 is connected to three circuits connected in parallel (this number is not to be regarded as limiting). Each of these circuits comprises a breaker (breaker Aa ₁ 4b, 4c) and, connected in series with each of these breakers, CacMum-Nickel auxiliary aldrum laboratories 2a _f 2b «. or, 2c. The batteries are operated by the CIc? no ve. fco.c 1 loaded in the manner specified below «,

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? 110196

As soon as the energy in the accumulators 2a 2b. _; 2c is stored, it transmits it in the main battery 3 via cables 7a 7b, 7c and breakers 5a, 5b _v BAW, 5c., By using the controls 22, 23 "bzw.- 24 is substantially the durch.die accumulators 2a. , 2b and 2c 'constant; a current detector 28, the purpose of which will be explained later, is connected in series between these regulators and the main battery 3 "

The method of operation of the device is simple and corresponds to the simplified schematic division given in FIG.

A clock generator 25 activates a programming device 27 at regular intervals via the cable 26, which by aie periodically controls the closing of the interrupters 4a, 4b and 4c one after the other, ensures the loading of the auxiliary alarms or accumulators 2a, 2b and Zc /; the clock generator 25 is operated ioi rest of the switches 5a, 5b and 5c * such _s that each of them is in the open position during the loading of the respective auxiliary battery 2a '2b.oder 2c According to a variant the control of the breaker 5a ₉ 5b and 5o, by the programming device 27 can be made. Batteries 2a, 2b and 2c are charged at a current intensity whose value is compatible with the charging current for this battery "and with the current value supplied by generator 1. This charging takes place for β hours, for example, with a current of 0 _s 3 A "represents After charging, each of the Hilfobabter-ien in the main battery by closing the corresponding breaker 5a _s 5b, and 5c _s discharged with the corresponding breakers 4a, 4b or 4c has been opened before. This discharge takes place in a cooler tent room, but with a greater current * that with the. Charge current ctar main battery 3 and with the discharge current of the Hilia batteries In * 2b and 2c 'for example 35 min. 1.7 A) is possible.

BATH

10 9 8 3 9/114 B.

The use of several auxiliary batteries 2a, 2b, 2c allows it is to establish a charging and discharging program for these batteries, so that the generator 1 only a single auxiliary battery charges and the main battery charge 3 is only done by a single auxiliary battery.

FIG. 3 shows the normal charging and discharging program for the three auxiliary batteries as a function of time t, the charging periods being shown in solid segments and the discharging periods being shown in interrupted segments.

The control of the drive elements 8 must take place under completely safe conditions, i.e. every delayed failure in the energy production facility must be automatic ensure «that the elements 8 are brought into the safety state will. In the case where the element 8 is a slider of a production head, the safety state is that closing the valve. On the other hand, the energy production facility can be remotely controlled at any moment.

The following describes the various control and safety devices be investigated, which is realized in the device according to Taer invention, as shown in Figure 2 iet are.

The current regulator 19 can be of the usual transistor type. It also includes a short-circuit detector, which occurs when of a short-circuit current in the discharge circuit of the generator 1 supplies a signal which is connected to the transmitter 9 via the Cable 29 remotely transmitted and attached to the one on the surface installation located control unit is displayed.

The device 20 is a device for determining open space and can be of a known type and, when the circuit is open, delivers a signal which is transmitted via the

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BATH ORIGINAL

Receiver 9 connected cable 30 is transmitted to the main installation, where the information is displayed. This way you can work from a distance of generator 1.

The current measuring device 21 makes it possible to measure the charging current of the auxiliary Ammler zn. For values of this current which are smaller than a first predetermined value I ₁ (for example I ₁ β 200 mA) «or for values of this current which are greater than a second predetermined value Ig (for example Ig« 0.4 A), the Be device generates a signal , which via the cable 31 to

k a safety device 32 is transmitted, which then, on the one hand, a signal ₉ transmitted via the cable 33 to the actuating element 17, which is for bringing the motor element 8 into the safety division (closed position of the valves) with the closing of the interrupter 14 and, on the other hand, a signal transmitted via the cable 34 which provides for the stopping of the clock 25, which opens the interrupters 5a, 5b, 5c, the clock 25 then sending a signal to the device 27 to open the interrupters 4a, 4b and 4c and to shut down the controller 22, 23 and 24 returns. In this way, if for any reason the generator 1 is no longer able to deliver energy (failure, wear and tear, etc.) or if a course closes in the discharge circuit, this

) Generator occurs, the organs to be actuated in the safety position brought before the charge of the main battery 3 has dropped below the threshold that allows all organs at the wellhead in safety. position. One receives at the main installation then on the one hand the signal supplied by the actuator 17, which indicates that the motor elements 8 in Safety division will be spent, with the signal on the transmitter 9 via the cable 35 and from there to the main installation is transmitted, which on the other hand, a signal originating from the organ 20 in the manner indicated above receives, which informs that the Sntladekreie of generator 1 is open.

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The regulators 22, 23 »24 for the discharge current of the auxiliary samplers 2a, 2b, 2c aind of a kind known per se. The rest of them are designed to prevent the main battery from discharging into the Help collector (for example by means of diodes connected in series are switched into the charging circuit of the auxiliary batteries), 33 discharge atrom of the batteries is through this regulator to a predetermined value I * {for example I- κ 1.7 A) set.

A discharge error of an auxiliary battery 2a, 2b, 2c is determined via the current measuring device 28, which generates a signal which is transmitted to the programming device 27 via the cable and a current value smaller than a predetermined value (for example I- * 1.4 A) will. This device acts via the cable 37 on the charging circuit of the auxiliary., Battery 2a, 2b or 2c, fttr which an loading error was detected by delivering a locking signal for the corresponding breaker 4a, 4b or 4c in the open position and also controls via the Cable 38, acting on the corresponding controller 22, 23 or 24, the deactivation of this controller. At the same time, the device goes into a new program! Erungszustand for Itadeeyklus the main did he Ie over, with only the sswei remain "used the auxiliary Had Rien. This new cycle is shown in Figure 4, where it was assumed that the battery 2a has failed. If another auxiliary battery were to fail, the Dade program would nooh be modified by the device 27, as Pigur 5 shows, where it was assumed that the batteries 2a and 2b are out of use.

If "all the auxiliary batteries fail, the ^ Programming device 27, after the last controller 22, 23 or 24 has been switched off, generate a signal which The safety device 32 is actuated via the cable 39, which acts as indicated above to control the motor element 8 to bring a security division »

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A safety device enclosed in the actuating member 17 acts on the control circuit for tlafj motor element for the case where his excitation is excessive, for example beyond a predetermined duration t ^ (for example t.j = e 10 sec.). Just in case the prolonged excitement of sticking the breaker to its contacts when performing an open position of the motor element 8 is due, this safety device interrupts the excitation of the motor element 8 and ensures that the interrupter is locked in its open position. This catfish can only be one Closing process for the corresponding slide valve can still be carried out, every actuation or control to open it impossible due to the interlocking of the interrupter 12.

For the pail where the prolonged excitement is due to the sticking of the breaker 14 to its contacts during the execution of a closing position of the Motor element 8, this device interrupts the excitation of the motor element 8 and ensures that the interrupter is locked 12 and 14 in their opening division, such that it it is no longer possible to control the operation of the motor element 8.

Detectors such as 41 (Figure 2) provide monitoring "certain parameters, such as pressure or temperature in the borehole. These detectors of known type are designed so that they deliver a signal when the regulated Parameters for the functioning of the wellhead reached critical values. This through the cable 42 to the The signal transmitted to the safety device 32 ensures that the motor elements 8 are brought into the safety position. On the other hand, the value of the parameters measured by the detectors can, if necessary, be transferred to the main installation transmitted on the surface via the transceiver 9 will.

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Other fuses can also be provided on the device described with reference to FIG. So can one "for example the supply of all electronic Regulate safety or control devices with electrical current, for example with the help of a current detector, the when the current intensity reaches abnormal values (ru weak or au strong current) triggers the motor elements 8 be brought to Sicherheitsstel3.img.

Claims

109839/1 US

Claims (9)

Claims 1) Autonomous arrangement for storing and reading electrical from an autonomous one. Generator low power delivered energy, for supplying electric power to a oils least one au controlling organ versehe "nen installation, wherein the organ, a Sicherheitsetellung aiifweist New York Convention with means for control and activation of this body, characterized in that it comprises in Korabination: a) a main collector for electrical energy, h) Means for connecting this generator to the main collector in order to load the latter with a to enable electrical power supplied by the generator, c) Equipment for connecting the main collector with the au controlling organ, which allow a control current to be fed to this organ, these connecting devices can be actuated by the control devices for this organ, d. Controls designed to periodically operate these linkages in such a way actuate that the charge of this collector is kept above a predetermined value which is sufficient to in order to bring this sru controlling organ into safety position if necessary. e) Means for controlling the energy supplied by the generator Currents designed to generate a pulse in the event of abnormal values of that supplied by the generator Deliver electricity and f) Safety devices associated with the control devices and connected to the actuating devices and are designed so that when this Iapulse is received 109839 / 1U5 on the one hand operate the control devices for this organ, to bring the latter into the safety position and on the other hand to act on the actuating devices., to keep the connection devices open and to interrupt the charging current of this main collector » 2) Device according to claim 1, characterized in that the generator is an isotope power source, 3) Device according to claim 1, characterized in that the generator is a fuel source. 4) Device according to claim 1, characterized in that these devices for controlling the supplied by the generator Current comprise a detector element for short circuit and a detector element for open circuit. 5) Device according to claim 1, gekennzelehnet in combination by a) devices for regulating the electrical current supplied to this installation by the main supplier, which are designed to provide a signal for abnormal values of this current, these regulating devices are connected to the safety devices; and b) Devices for monitoring at least one parameter of the installation that is characteristic of the functioning of the installation, which are designed to provide a signal in the event of abnormal values of this parameter, these Control and monitoring devices with the safety devices are connected, which are laid out so that they these control devices for this organ the installation, upon receipt of at least one of these signals, in order to bring this organ into its safety position, 109839/1 U5 6) Device according to one of claims 4 or 5 smr feed a remote-controlled installation with electrical energy, which is connected to a main installation via connection devices which are connected to the control devices are connected for this organ and designed so that they are these control devices at .Empfang a press the characteristic message * for regulation aeichnöt that these facilities / for the supplied by the generator Electricity, these monitoring devices and these devices for controlling this organ with these ver ~ Bindungseinriehtungen are connected to which they receive signals representative of the state in which the Installak tion is located, delivering these connecting devices to the main installation in the form of a message this Provide signals that are representative of the status of the remote-controlled installation. 7} Device according to claim 1, characterized in that the means for connecting the generator with the Main collectors are designed with several paths, each of which has at least one intermediate element for storage electrical energy supplied by the generator, said connection means comprising each intermediate element connect on the one hand to the generator and on the other hand to the main collector in order to load the latter with ) enable a current supplied by the intermediate element; that these controls have a programming device include element that is able to periodically and separately the connection of each intermediate element on the one hand with the generator and on the other hand with the main collector according to a connection program that can be selected from a group of different programs which deliver this programming element asu as desired be able to; and that means for regulating the current supplied by each intermediate element therewith Controls are connected and able to: 1 09839/11 - 1 to deliver a signal as soon as an anomaly at least a similar path occurs, this signal being this Betatigurtgaeinrichtungen "operated to the path where the Anomaly has occurred, switch off and modify the program of this programming element to correct the Charge the main collector via the remaining routes enable. 8) "Device according to claim 7, characterized in that this programming element is connected to the safety devices and designed in such a way that it can be used with the latter when this cattle is switched off transmits a total signal, which controls the bringing this organ to be actuated into the safety position. 9) Device according to claim 7, characterized in that this intermediate element is an electrical collector or Accumulator is. 109839/1 US