An opening / closing device having a non-contact power transmission system for a tank sensor

Abstract

An opening and closing device (1, 1a, …, 1g) is disclosed, which comprises a tank system (3, 3g) filled with an insulating gas, a switching device (4) and at least one electronic sensor (7) within the tank system (3, 3g). Further, the opening and closing device (1, 1a, …, 1g) comprises a non-contact power transmission system (8, 8a, …, 8g) having a power transmitter (9, 9a, …, 9g) outside the tank system (3, 3g) and a power receiver (10, 10a, …, 10g) within the tank system (3, 3g), and the power receiver (10, 10a, …, 10g) is coupled to the power transmitter (9, 9a, …, 9g). Further, the power receiver (10, 10a, …, 10g) is electrically connected to the electronic sensor (7) and is designed to supply power (P) to the electronic sensor (7).

Description

Technical Field

[0001] The present invention relates to a switching device comprising a tank system filled with an insulating gas and comprising a switching device and at least one electronic sensor within the tank system.

Background Art

[0002] Such switching devices are generally known in the prior art. In order to measure the pressure or temperature of the insulating gas within the tank system, a pressure sensor or temperature sensor can be arranged within the tank system. For example, the insulating gas may consist of or contain sulfur hexafluoride (SF6). Over time, the filling gas may leak from the tank system, and the heat insulation function may deteriorate. For example, in order to ensure a minimum value of the insulation function for a switching device arranged within the gas filling system, a minimum pressure value of the gas filling can be defined. If the pressure of the filling gas drops below this minimum pressure value, the operation of the electrical switching device may become dangerous. For this reason, in such a situation, it is desirable to stop the operation of the electrical switching device.

[0003] The drawback of the prior art solution is that the electronic sensor and the measurement unit are powered by an electric wire led through the wall of the tank system. Even if this penetration part of the tank system is carefully sealed, this part of the tank system is particularly dangerous regarding gas leakage. The reason is that the tank system, especially the tank system of the switching device, undergoes a lifetime gas filling that is retained within the tank system for many years or decades. For example, the general nominal lifetime of a switching device is about 30 years.

Summary of the Invention

Problems to be Solved by the Invention

[0004] Accordingly, it is an object of the present invention to provide an improved switching device. In particular, a solution should be provided that overcomes the above-mentioned drawbacks and provides airtightness over a long period, especially over the entire lifetime of the switching device.

Means for Solving the Problem

[0005] The object of the present invention is solved by an opening and closing device as disclosed in the opening paragraph, which further comprises a non-contact power transmission system having a power transmitter outside the tank system and a power receiver inside the tank system. The power transmitter is designed to receive power from a power source and convert it into non-conductive form power. The power receiver is coupled to the power transmitter and is designed to receive non-conductive form power from the power transmitter and convert the non-conductive form power into power. The power receiver is electrically connected to an electronic sensor and is designed to supply power to the electronic sensor.

[0006] By means of the present invention, a through-hole for supplying power to the electronic sensor in the tank system can be omitted, so that the airtightness of the tank system is substantially improved. Therefore, the risk of gas leakage can be substantially reduced. Therefore, the gas filling can be retained in the tank system over a long period, especially over the entire life of the opening and closing device.

[0007] Generally, at least one electronic sensor can be a pressure sensor, a temperature sensor, or a combination of a pressure sensor and a temperature sensor, and thus can be designed to measure pressure and / or temperature. For example, the pressure sensor may be embodied as a capacitive pressure sensor.

[0008] Note that a "tank system" can consist of a tank or can include a tank. Further, a "tank system" can also include things such as tubes. Therefore, the electronic sensor may be arranged inside the tank, but may also be arranged, for example, inside a tube. In particular, the tank system is a sealed tank system in the context of the present invention. The tank system can be filled with sulfur hexafluoride (abbreviated as "SF6"). Further, the tank system can be made of or include stainless steel or mild steel.

[0009] Further advantageous embodiments are disclosed in the claims, the description, and the drawings.

[0010] In an advantageous embodiment, the power transmitter can be designed as an electromagnetic power transmitter and the power receiver can be designed as an electromagnetic power receiver. In this case, the non-conductive power form is electromagnetic power, and the electromagnetic power transmitter and the electromagnetic power receiver are electromagnetically coupled. In particular, the electromagnetic power transmitter can comprise a power transmitter primary magnetic core and a primary power coil wound around the power transmitter primary magnetic core. Similarly, the electromagnetic power receiver can comprise a power transmitter secondary magnetic core and a secondary power coil wound around the power transmitter secondary magnetic core, and the electronic sensor is connected to the secondary power coil. In this embodiment, the non-contact power transmission system is basically embodied as a transformer, with the primary side connected to a power source outside the tank system and the secondary side arranged within the tank system to supply power to the electronic sensor. In particular, the rectifier can be arranged between the secondary coil and the electronic sensor. Advantageously, the transformer is a very suitable device for transmitting electrical energy in a non-contact manner.

[0011] "Electromagnetically coupled" in the context of the present disclosure particularly means "inductively coupled" or "substantially inductively coupled". Thus, an electromagnetic field for the transmission of power and / or data is generally generated and then received by the coil. The frequency of the electromagnetic field can particularly be within the range of Hz and kHz. In yet another preferred embodiment, resonant inductive coupling can be used with respect to the problems of the present invention.

[0012] In another advantageous embodiment, the power transmitter can be designed as an acoustic power transmitter (or respectively a sound emitter), and the power receiver can be designed as an acoustic power receiver (or respectively a sound receiver). In this case, the non-conductive form of power is acoustic power, and the acoustic power transmitter and the acoustic power receiver are acoustically coupled. Advantageously, the acoustic power transmission device is well-suited for a tank system made of steel, especially mild steel, since an electromagnetic field that can be affected by the material of the tank system is not involved in power transmission. The acoustic output transmission can be carried out in the audible frequency range or, advantageously, in the ultrasonic frequency range. The latter provides power transmission without the generation and emission of interfering audible noise.

[0013] In yet another advantageous embodiment, the opening and closing device can comprise a non-contact data transmission system having a data transmitter inside the tank system and a data receiver outside the tank system, and a microcontroller having a microcontroller input part and a microcontroller output part. In this case, the microcontroller is connected to an electronic sensor and is designed to receive measurement data from the electronic sensor via its microcontroller input. The output of the microcontroller is connected to the data transmitter. The microcontroller is designed to transmit measurement data to the data transmitter via its microcontroller output, and the data receiver is designed to receive measurement data from the data transmitter in a non-contact manner. The microcontroller can comprise a processor, can comprise on-board memory, or can be connected to external memory. By the proposed means, a penetration for the data transmission system is not necessary either, so that the airtightness of the tank system can be further improved. Thus, the proposed data transmission system serves to maintain a gas filling inside the tank system over a long period without increasing the risk of gas leakage.

[0014] It is advantageous if the data transmitter comprises a wireless data transmitter having a transmitter antenna and the data receiver comprises a wireless data receiver having a receiver antenna. Advantageously, wireless data transmission is a non-contact method, i.e., a method well-suited for transmitting data "wirelessly".

[0015] "Wireless data transmission" in the context of the present invention relates to data communication via radio waves generated and received using an antenna. The frequency of the radio waves can in particular be in the range of MHz and GHz.

[0016] In another advantageous embodiment, the data transmitter may be embodied as an electromagnetic data transmitter, the data receiver may be an electromagnetic data receiver, and the electromagnetic data transmitter and the electromagnetic data receiver are electromagnetically coupled. In particular, the electromagnetic data transmitter can comprise a data transmitter primary magnetic core and a primary data coil wound around the data transmitter primary magnetic core. Similarly, the electromagnetic data receiver can comprise a data transmitter secondary magnetic core and a secondary data coil wound around the data transmitter secondary magnetic core, and the microcontroller output is connected to the secondary data coil. In particular, an evaluation unit can be connected to the secondary coil. Advantageously, the transformer is also a device well-suited for transmitting electrical data non-contact.

[0017] In yet another advantageous embodiment, the data transmitter may be an acoustic data transmitter, the data receiver may be an acoustic data receiver, and the acoustic data transmitter and the acoustic data receiver are acoustically coupled. Advantageously, the acoustic data transmitter is well-suited for a tank system made of steel, in particular mild steel, since the electromagnetic field that can be affected by the material of the tank system is not involved in data transmission. Acoustic data transmission can be carried out in the audible frequency range or, advantageously, in particular in the ultrasonic frequency range. The latter provides data transmission without the generation and emission of interfering audible noise.

[0018] Also, it is very advantageous when the opening / closing device includes a load modulation means connected to an electromagnetic power receiver, a current detection means connected to an electromagnetic power transmitter, and a microcontroller having a microcontroller input and a microcontroller output. In this embodiment, the microcontroller is designed to be connected to an electronic sensor and receive measurement data from the electronic sensor via the microcontroller input. The microcontroller output is connected to the load modulation means, and the microcontroller is designed to transmit measurement data to the load modulation means via the microcontroller output. Finally, the current detection means is designed to receive measurement data from the electromagnetic power receiver. Also in this case, the microcontroller can include a processor, can include on-board memory, or can be connected to external memory. In one embodiment, the load modulation means can be formed by or can include a series connection of a resistor and a switch, and the series connection is connected in parallel with the electromagnetic power receiver, for example, in parallel with the secondary power coil of the electromagnetic power receiver. In this embodiment, the microcontroller output is provided to control the switch and thus control the secondary-side load. When the switch is opened and closed according to binary data, the load variation that can also be detected on the primary side by the current detection means represents the binary data. In this way, the measurement data can be transmitted from the secondary side of the electromagnetic power transmitter to its primary side. Thus, strictly speaking, the electromagnetic power transmitter is not only a power transmitter but also a combined electromagnetic power and data transmitter. For example, an evaluation unit can be connected to the output of the current detection means and demodulate the measurement data.

[0019] In a very advantageous embodiment of the opening / closing device, the power transmitter is designed as an electromagnetic power transmitter, the power receiver is designed as an electromagnetic power receiver, the non-conductive form of power is electromagnetic power, the electromagnetic power transmitter and the electromagnetic power receiver are electromagnetically coupled, a) The data transmitter comprises a wireless data transmitter having a transmitter antenna, and the data receiver comprises a wireless data receiver having a receiver antenna. b) The data transmitter is an acoustic data transmitter, the data receiver is an acoustic data receiver, and the acoustic data transmitter and the acoustic data receiver are acoustically coupled. This is an example of a hybrid embodiment that uses different technologies based on different physical laws for power and data transmission. Thus, advantageously, power transmission and data transmission do not interfere with each other.

[0020] In yet another highly advantageous embodiment of the opening and closing device, the power transmitter is designed as an acoustic power transmitter, the power receiver is designed as an acoustic power receiver, the non-conductive form of power is acoustic power and the acoustic power transmitter and the acoustic power receiver are acoustically coupled. c) The data transmitter comprises a wireless data transmitter having a transmitter antenna, and the data receiver comprises a wireless data receiver having a receiver antenna. d) The data transmitter is embodied as an electromagnetic data transmitter, the data receiver is an electromagnetic data receiver, and the electromagnetic data transmitter and the electromagnetic data receiver are electromagnetically coupled. This is another example of a hybrid embodiment in which different technologies based on different physical laws are used for power and data transmission. Thus, advantageously, power transmission and data transmission do not interfere with each other.

[0021] The tank system is particularly advantageous when made of plastic in the area of a non-contact power transmission system (and optionally also in the area of a non-contact data transmission system). The proposed means helps to increase the efficiency of non-contact power and / or data transmission systems based on electromagnetic coupling, since plastic is almost "invisible" to electromagnetic power and / or data coupling and plastic does not substantially attenuate electromagnetic transmission. The same applies to wireless data transmission systems. However, usually plastic is substantially softer than metal and supports the efficient transmission of acoustic energy through the walls of the tank system, so advantages are also obtained when an acoustic power and / or data transmission system is used.

Brief Description of the Drawings

[0022] The present invention will be described in more detail below with reference to specific embodiments, but the present invention is not limited thereto.

[0023]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Best Mode for Carrying Out the Invention

[0024] Generally, the same or similar parts are denoted by the same / similar names and reference numerals. The features disclosed in this specification apply to the parts having the same / similar names and respective reference numerals. The indication of orientation and relative position is related to the relevant drawings, and the indication of orientation and / or relative position may have to be modified in different drawings as appropriate.

[0025] FIG. 1 shows a schematic view of a general example of a switching device 1 including a switching device housing 2, a tank system 3 within the switching device housing 2, and a switching device 4 disposed within the tank system 3 connected to a first power line 5. The tank system 3 is filled with an insulating gas such as sulfur hexafluoride (abbreviated as "SF6"). Thereby, the insulating function within the tank system 3 is improved so that the proper function of the switching device 4 can be ensured.

[0026] Furthermore, the switching device 1 includes a first example of a device 6 having at least one electronic sensor 7 within the tank system 3 and a non-contact power transmission system 8. The non-contact power transmission system 8 has a power transmission device 9 outside the tank system 3 and a power reception device 10 inside the tank system 3. The power transmitter 9 is designed to receive power P from a power source and convert it into non-conductive form power. Since the power source is outside the switching device 1 in the example of FIG. 1, it is not shown in FIG. 1, and power P is supplied to the power transmission device 9 from the outside via a second power line 11. The power receiver 10 is designed to be coupled to the power transmitter 9, receive non-conductive form power from the power transmitter 9, and convert it into power. Furthermore, the power receiver 10 is designed to be electrically connected to the electronic sensor 7 and supply power to the electronic sensor 7.

[0027] At least one electronic sensor 7 may be designed to measure the pressure p and / or temperature T of the insulating gas within the tank system 3. For example, the electronic sensor 7 may be embodied as a capacitive pressure sensor.

[0028] The device 6 can also be provided with an arbitrary contactless data transmission system 12 having a data transmitter 13 within the tank system 3 and a data receiver 14 outside the tank system 3. In this example, the data transmitter 13 is a wireless data transmitter 15 having a transmitter antenna 16, and the data receiver 14 is a wireless data receiver 17 having a receiver antenna 18. The data receiver 14 is designed to receive measurement data D from the data transmitter 13 in a contactless manner. The data receiver 14, particularly the wireless data receiver 17, can be connected to an evaluation unit 19 as in the case of FIG. 1.

[0029] Furthermore, the device 6 can be provided with a microcontroller 20 having a microcontroller input 21 and a microcontroller output 22. The microcontroller 20 is connected to the electronic sensor 7 and is designed to receive measurement data D from the electronic sensor 7 via its microcontroller input 21. The microcontroller output 22 is connected to the data transmitter 13, particularly the wireless data transmitter 15. The microcontroller 20 transmits the measurement data to the data transmitter 13 via its microcontroller output 22. The microcontroller 20 can include a processor 23 and can include an on-board memory 24 as in the case of FIG. 1. Alternatively, the microcontroller 20 or the processor 23 can be connected to an external memory.

[0030] In this example, the electronic sensor 7, the data transmitter 13, and the microcontroller 20 form a sensing unit 25 connected to a power receiver 10.

[0031] The function of the opening / closing device 1 is as follows: As is generally known, the switching device 4 in the insulating gas can be used for medium-voltage and high-voltage switching applications. In order to guarantee the minimum value of the insulating function, the pressure value of the filling gas can be monitored. For this reason, the measuring unit 25 may be permanently powered or powered from time to time to periodically measure the pressure p and / or the temperature T in the tank system 3. For this purpose, as described above, the power P is transmitted non-contact to the measuring unit 25 via the non-contact power transmission system 8. The microcontroller 20 can control the electronic sensor 7 and collect the measurement data D from the electronic sensor 7. Also, the microcontroller 20 can pass the measurement data D to the wireless data transmitter 15, either by pre-processing the measurement data D or without performing such processing. The microcontroller 20 can also store the measurement data D in the memory 24. Furthermore, the memory 24 may store a program executed by the processor 23. When the measurement data D is transmitted via the non-contact data transmission system 12, the measurement data D can be further processed in the evaluation unit 19 and / or transmitted to the higher-level control device, either wired or wirelessly. It should be noted that if the microcontroller 20 cannot directly drive the data transmitter 15, the device 6 may have a driver stage between the microcontroller output 22 and the data transmitter 15.

[0032] Figure 2 shows another example of a switching device 1a having a configuration 6a similar to the switching device 1 and the configuration 6 of Figure 1, where the power transmitter 9a is designed as an electromagnetic power transmitter, the power receiver 10a is designed as an electromagnetic power receiver, the non-conductive form of power is electromagnetic power, and the electromagnetic power transmitter 9a and the electromagnetic power receiver 10a are electromagnetically coupled. In this example, the electromagnetic power transmitter 9a and the electromagnetic power receiver 10a form an electromagnetic non-contact power transmission system 8a.

[0033] In particular, similar to the case of FIG. 2, the electromagnetic power transmitter 9a and the electromagnetic power receiver 10a can include a power transmitter primary magnetic core 26 and a primary power coil 27 wound around the power transmitter primary magnetic core 26, and the electromagnetic power receiver 10a can include a power transmitter secondary magnetic core 28 and a secondary power coil 29 wound around the power transmitter secondary magnetic core 28. In this embodiment, the electromagnetic non-contact power transmission system 8a is basically embodied as a transformer, which is a device well-suited for transmitting power P in a non-contact manner. In this example, the detection unit 25, and thus the electronic sensor 7, is connected to the secondary power coil 29 via a rectifier 30. The primary power coil 27 can be directly powered by an alternating voltage supplied via the second power line 11, or can be powered by an optional power converter 31 that converts the alternating voltage supplied via the second power line 11 to another suitable voltage. For example, if the frequency of the alternating voltage on the second power line 11 is not compatible with the electromagnetic non-contact power transmission system 8a, the optional power converter 31 can be used.

[0034] FIG. 3 shows an example of an opening / closing device 1b having a configuration 6b similar to the opening / closing device 1a and the configuration 6a of FIG. 2. The device 6b includes an acoustic non-contact power transmission system 8b instead of the electromagnetic non-contact power transmission system 8a. Specifically, the power transmitter 9 is designed as an acoustic power transmitter (or sound emitter) 9b, and the power receiver 10 is designed as an acoustic power receiver (or sound receiver) 10b. Thus, the non-conductive form of power is acoustic power, and the acoustic power transmitter 9b and the acoustic power receiver 10b are acoustically coupled. Advantageously, the acoustic non-contact power transmission system 8b is well-suited for a tank system 2 made of steel, particularly mild steel, because an electromagnetic field that can be affected by the material of the tank system 2 is not involved in power transmission. Also in this case, if the alternating voltage supplied via the second power line 11 is not directly usable for the acoustic non-contact power transmission system 8b, the optional power converter 31 can be used. The acoustic output transmission can be performed in the audible frequency range, or advantageously in the ultrasonic frequency range. The latter provides power transmission without the generation and emission of interfering audible noise.

[0035] FIG. 4 shows an example of an opening / closing device 1c having a configuration 6c similar to the opening / closing device 1a and the configuration 6a of FIG. 2. Instead of a wireless data transmission system, the device 6c includes an electromagnetic non-contact data transmission system 12c. In the present embodiment, the data transmitter 13c is an electromagnetic data transmitter, the data receiver 14c is an electromagnetic data receiver, and the electromagnetic data transmitter 13c and the electromagnetic data receiver 14c are electromagnetically coupled.

[0036] Specifically, the electromagnetic data transmitter 13c can include a data transmitter primary magnetic core 32 and a primary data coil 33 wound around the data transmitter primary magnetic core 32. Further, the electromagnetic power receiver 14c can include a data transmitter secondary magnetic core 34 and a secondary data coil 35 wound around the data transmitter secondary magnetic core 34, and the microcontroller output 22 is connected to the secondary data coil 35.

[0037] The microcontroller 20 can collect the measurement data D from the electronic sensor 7, and then this measurement data D is passed to the primary data coil 33 using the previous processing of the measurement data D again or without using such processing. As described for the example of FIG. 1, the microcontroller 20 can also store the measurement data D in the memory 24. When the measurement data D is transmitted via the non-contact data transmission system 12c, the measurement data D can be further processed in the evaluation unit 19 and / or transmitted to the upper control device by wire or wirelessly. It should be noted that if the microcontroller 20 cannot directly drive the primary data coil 33, the device 6c may have a driver stage between the microcontroller output 22 and the primary data coil 33.

[0038] Figure 5 shows another example of the opening / closing device 1d having the same configuration 6d as the opening / closing device 1b and the configuration 6b of FIG. 3. Instead of the wireless data transmission system, the configuration 6d includes an acoustic non-contact data transmission system 12d. In this embodiment, the data transmitter 13d is an acoustic data transmitter (or sound emitter), the data receiver 14d is an acoustic data receiver (or sound receiver), and the acoustic data transmitter 13d and the acoustic data receiver 14d are acoustically coupled. Advantageously, the acoustic non-contact data transmission system 12d is well-suited for a tank system 2 made of steel, especially mild steel, since the electromagnetic field that can be affected by the material of the tank system 2 is not involved in data transmission. Acoustic data transmission can be performed in the audible frequency range or, advantageously, in the ultrasonic frequency range. The latter provides data transmission without the generation and emission of interfering audible noise.

[0039] The collection of the measurement data D from the electronic sensor 7, any preprocessing, and the output of the measurement data D via the microcontroller output 22 are performed as in the previous example. The same applies to the processing of the measurement data D by the evaluation unit 19. Further, the device 6d can also include a driver stage between the microcontroller output 22 and the data transmitter 13d if the microcontroller 20 cannot directly drive the data transmitter 13d.

[0040] Figure 6 shows a further example of the opening / closing device 1e having a configuration 6e that can be seen as a hybrid of the opening / closing device 1c and the configuration 6c of FIG. 4, and the opening / closing device 1d and the configuration 6d of FIG. 5. Instead of the electromagnetic non-contact data transmission system 12c, a device 6e such as the device 6d of FIG. 5 includes an acoustic non-contact data transmission system 12e. FIG. 6 shows an electromagnetic non-contact power transmission system 8e and an acoustic non-contact data transmission system 12e. However, the roles can be changed, and the opening / closing device 1e can include an acoustic non-contact power transmission system 8d as in FIG. 5 and an electromagnetic data transmission system 12e as in FIG. 4.

[0041] FIG. 7 shows an example of an opening / closing device 1f having an arrangement 6f similar to the opening / closing device 1a and the arrangement 6a of FIG. 2 (and similar to FIGS. 5 and 6). Instead of a wireless data transmission system, the device 6f comprises load modulation means 36 connected to an electromagnetic power receiver 10f.

[0042] In this embodiment, the load modulation means 36 comprises a series connection of a modulation switch 37 and a resistor 38, the series connection being connected in parallel with the secondary power coil 29. The microcontroller output 22 is connected to the load modulation means 36, in particular to the modulation switch 37. Thus, the modulation switch 37 is controlled by the microcontroller 20. Further, the microcontroller 20 connected to the electronic sensor 7 and receiving measurement data D from the electronic sensor 7 via its microcontroller input 21 transmits the measurement data D to the load modulation means 36 via its microcontroller output 22. Specifically, the modulation switch 37 can be switched on and off according to a binary signal representing the measurement data D of the electronic sensor 7.

[0043] Furthermore, the device 6f comprises current detection means 39 connected to an electromagnetic power transmitter 9f. Specifically, the current detection means 39 measures the current in the second power line 11. The current changes according to the modulation of the load in the secondary power coil 29, i.e., according to the switching state of the modulation switch 37. Since the modulation switch 37 is switched on and off according to the measurement data D of the electronic sensor 7, the current in the second power line 11 also represents the measurement data D. Thus, the current detection means 39 is designed to receive the measurement data D from the electromagnetic power receiver 10f. In this embodiment, the evaluation unit 19 is connected to the current detection means 39 for post-processing the measurement data D.

[0044] Generally, as already described, the tank system 13 can be made of or include stainless steel or mild steel. In an advantageous embodiment, the tank system 13 can be made of plastic in the area of the non-contact power transmission system 8 and / or the area of the optional non-contact data transmission system 12, as shown in FIG. 8. Specifically, FIG. 8 shows an example of an opening / closing device 1g having a configuration 6g similar to the opening / closing device 1 and the configuration 6 of FIG. 1. In contrast, the tank system 3g is made of a metal M1 (e.g., stainless steel or mild steel) and includes portions made of plastic M2 in the area of the non-contact power transmission system 8g and the area of the optional non-contact data transmission system 12g. The proposed means helps to increase the efficiency of the electromagnetic non-contact power transmission systems 8a, 8c, 8e, 8f, 8g and / or the optional electromagnetic non-contact data transmission system 12c because plastic is almost "invisible" to electromagnetic power and / or data coupling and plastic does not substantially attenuate electromagnetic transmission. The same can be said for the wireless data transmission systems 12, 12a, 12b, 12g. However, plastic is usually substantially softer than metal and also supports efficient transmission of acoustic energy through the walls of the tank system 2, so advantages can also be provided when the acoustic non-contact power transmission systems 8b, 8d and / or the optional acoustic non-contact data transmission systems 12d, 12e are used.

[0045] It should be noted that the present invention is not limited to the embodiments disclosed above, and combinations of different variations are possible. In fact, the system may have more or fewer components than shown in the drawings. Further, this description can include additional independent inventive subject matter.

[0046] Also, it should be noted that the term "comprising" does not exclude other elements, and the use of the article "a" does not exclude a plurality. Also, elements described in connection with different embodiments may be combined.

Explanation of Reference Numerals

[0047] 1, 1a, …, 1g Opening and closing devices 2 Opening and closing device housing 3, 3g Tank systems 4 Switching device 5 First power line 6, 6a, …, 6g Arrangement 7 Electronic sensor 8, 8a, …, 8g Non-contact power transmission systems 9, 9a, …, 9g Power transmitters 10, 10a, …, 10g Power receivers 11 Second power line 12, 12a, …, 12g Non-contact data transmission systems 13, 13a, …, 13g Data transmitters 14, 14a, …, 14g Data receivers 15 Wireless data transmitter 16 Transmitter antenna 17 Wireless data receiver 18 Receiver antenna 19 Evaluation unit 20 Microcontroller 21 Microcontroller input 22 Microcontroller output 23 Microprocessor 24 Memory 25 Sensing unit 26 Power transmitter primary magnetic core 27 Primary power coil 28 Power transmission device secondary magnetic core 29 Secondary power coil 30 Rectifier 31 Power converter 32 Data transmitter primary magnetic core 33 Primary data coil 34 Data transmitter secondary magnetic core 35 Secondary data coil 36 Load modulation means 37 Modulation switch 38 Resistor 39 Current sensing means M1 Metal M2 Plastic D Measurement Data P (Electric) Power p Pressure T Temperature

Claims

1. An opening and closing device comprising a tank system filled with an insulating gas, and having a switching device and at least one electronic sensor inside the tank system, wherein the opening and closing device further comprises a non-contact power transmission system having a power transmitter outside the tank system and a power receiver inside the tank system, the power transmitter is designed to receive power from a power source and convert the power into non-conductive form power, the power receiver is designed to be coupled to the power transmitter, receive the non-conductive form power from the power transmitter, and convert the non-conductive form power into power, the power receiver is electrically connected to the electronic sensor and is designed to supply power to the electronic sensor.

2. The power transmitter is designed as an electromagnetic power transmitter, the power receiver is designed as an electromagnetic power receiver, the non-conductive form power is electromagnetic power, the electromagnetic power transmitter and the electromagnetic power receiver are electromagnetically coupled. The opening and closing device according to claim 1.

3. The electromagnetic power transmitter comprises a power transmitter primary magnetic core and a primary power coil wound around the power transmitter primary magnetic core, the electromagnetic power receiver comprises a power transmitter secondary magnetic core and a secondary power coil wound around the power transmitter secondary magnetic core, the electronic sensor is connected to the secondary power coil. The opening and closing device according to claim 2.

4. The power transmitter is designed as an acoustic power transmitter, the power receiver is designed as an acoustic power receiver, the non-conductive form power is acoustic power, the acoustic power transmitter and the acoustic power receiver are acoustically coupled. The opening and closing device according to claim 1.

5. The at least one electronic sensor is designed to measure pressure and / or temperature. The opening and closing device according to any one of claims 1 to 4.

6. a non-contact data transmission system having a data transmitter inside the tank system and a data receiver outside the tank system, and a microcontroller having a microcontroller input part and a microcontroller output part, the microcontroller is connected to the electronic sensor and is designed to receive measurement data from the electronic sensor via the microcontroller input part. The microcontroller output unit is connected to the data transmitter, and the microcontroller is designed to transmit measurement data to the data transmitter via the microcontroller output unit. The data receiver is designed to receive measurement data from the data transmitter in a non-contact manner. The opening / closing device according to any one of claims 1 to 5.

7. The data transmitter includes a wireless data transmitter having a transmitter antenna, and the data receiver includes a wireless data receiver having a receiver antenna. The opening / closing device according to claim 6.

8. The data transmitter is embodied as an electromagnetic data transmitter, the data receiver is an electromagnetic data receiver, and the electromagnetic data transmitter and the electromagnetic data receiver are electromagnetically coupled. The opening / closing device according to claim 6.

9. The electromagnetic data transmitter includes a data transmitter primary magnetic core and a primary data coil wound around the data transmitter primary magnetic core, and the electromagnetic data receiver includes a data transmitter secondary magnetic core and a secondary data coil wound around the data transmitter secondary magnetic core. The microcontroller output unit is connected to the secondary data coil. The opening / closing device according to claim 8.

10. The data transmitter is an acoustic data transmitter, the data receiver is an acoustic data receiver, and the acoustic data transmitter and the acoustic data receiver are acoustically coupled. The opening / closing device according to claim 6.

11. Load modulation means connected to the electromagnetic power receiver, Current detection means connected to the electromagnetic power transmitter, A microcontroller having a microcontroller input unit and a microcontroller output unit, further comprising: The microcontroller is connected to the electronic sensor and is designed to receive measurement data from the electronic sensor via the microcontroller input unit. The microcontroller output unit is connected to the load modulation means, and the microcontroller is designed to transmit measurement data to the load modulation means via the microcontroller output unit. The current detection means is designed to receive measurement data from the electromagnetic power receiver. The opening / closing device according to any one of claims 1 to 5.

12. The power transmitter is designed as an electromagnetic power transmitter, and the power receiver is designed as an electromagnetic power receiver. The non-conductive form of power is electromagnetic power, The electromagnetic power transmitter and the electromagnetic power receiver are electromagnetically coupled, a) The data transmitter comprises a wireless data transmitter having a transmitter antenna, and the data receiver comprises a wireless data receiver having a receiver antenna, b) The data transmitter is an acoustic data transmitter, the data receiver is an acoustic data receiver, and the acoustic data transmitter and the acoustic data receiver are acoustically coupled. The opening / closing device according to claim 7 or 10.

13. The power transmitter is designed as an acoustic power transmitter, and the power receiver is designed as an acoustic power receiver, The non-conductive form of power is acoustic power The acoustic power transmitter and the acoustic power receiver are acoustically coupled c) The data transmitter comprises a wireless data transmitter having a transmitter antenna, and the data receiver comprises a wireless data receiver having a receiver antenna, or d) The data transmitter is embodied as an electromagnetic data transmitter, the data receiver is an electromagnetic data receiver, and the electromagnetic data transmitter and the electromagnetic data receiver are electromagnetically coupled. The opening / closing device according to claim 7 or 8.

14. The tank system is made of stainless steel or mild steel, or includes stainless steel or mild steel. The opening / closing device according to any one of claims 1 to 13.

15. The tank system is made of plastic in the area of the non-contact power transmission system. The opening / closing device according to claim 14.

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