Arrangement with power line

Abstract

There is an arrangement of power lines. An arrangement comprising at least one first electrically conductive power line (1a, 1b, 1c), a sheath (2) and a rod-shaped insulator (3); wherein the sheath (2) has a first end (4a) and a second end (4b), and the first end (4a) is different from the second end (4b), and the first end (4a) is opposite the second end (4b), and the sheath (2) has a first opening at the first end (4a) and a second opening at the second end (4b); wherein at least one first power line (1a, 1b, 1c) extends through the arrangement from a first end (4a) to a second end (4b) and defines an axis; wherein the rod-shaped insulator (3) comprises at least one passage through the rod-shaped insulator (3), and a first portion of the at least one power line (1a, 1b, 1c) extends in the at least one passage through the rod-shaped insulator (3).

Description

Technical Field

[0001] The present disclosure relates to an arrangement with a power supply line for a sensor element. In particular, the present disclosure relates to such an arrangement with a power supply line for use in a combustion device. The sensor element may, for example, record a gas concentration, in particular an oxygen concentration. Background Art

[0002] Industrial processes use energy conversion by combustion in order to generate steam and / or heat for industrial processes. For this purpose, during operation, a flame from a heat generator burns in a combustion chamber of a combustion device. The heat generator exchanges the thermal energy of hot fuel gas in another fluid, such as, for example, water. The warm water is used, for example, to operate a hot water heating system and / or to heat drinking water. According to another embodiment, for example, in an industrial process, the thermal energy of hot fuel and / or fuel gas may be used to heat the product. According to a further embodiment, the heat generator is part of a system with power-heat coupling, such as a motor of such a system. In addition, the heat generator can be used to heat water in a system for extracting lithium and / or lithium carbonate. Exhaust gases are discharged from the combustion chamber, for example, via an exhaust gas chimney and / or a flue gas chimney and / or a chimney. Then, a sensor element that can, for example, record the oxygen concentration is arranged in the exhaust gas chimney and / or the flue gas chimney and / or the chimney.

[0003] Some of these processes involve the operation of furnaces or boilers. While combustion represents a cost-effective energy conversion, attempts are often made to maximize combustion efficiency within a process. Maximizing combustion efficiency is, among other things, a result of the exhaust and / or flue gases produced leaving the system. These exhaust and / or flue gases are sometimes subject to regulations regarding harmful gas emissions. Therefore, one goal of optimization is to maximize the combustion efficiency of existing furnaces and / or boilers. This is accompanied by a reduction in the production of greenhouse gases and other harmful byproducts.

[0004] Another object is to optimize for different fuels and / or fuel gases. In particular, this relates to fuels and / or fuel gases containing hydrogen. Advantageously, the fuel and / or fuel gas in question contains more than 20% by volume of hydrogen at 293 Kelvin. In some cases, the volume fraction of hydrogen at 293 Kelvin is 50%, or even 70%.

[0005] Combustion efficiency can be optimized by controlling the oxygen content in the exhaust and / or flue gases produced by the combustion process. This ensures oxidation of the combustion byproducts to a large extent.

[0006] In-situ analysis equipment or in-process analysis equipment can be used to monitor and / or optimize and / or control the ongoing combustion process. Common analysis equipment includes a sensor unit. The sensor unit is heated to a high temperature. It operates directly in the combustion zone or close to the combustion zone of a furnace or boiler.

[0007] Known analytical devices typically use a zirconium dioxide based oxygen sensor. The oxygen sensor is located at one end of a probe that is inserted into the flue gas stream. As the exhaust and / or flue gas flows into the analytical device, it diffuses through a filter or diffuser to the vicinity of the zirconium dioxide based oxygen sensor. There is no pump and / or other flow inducing device for directing the sample flow into the analytical device. Instead, the gas passes passively through the diffuser. The sensor provides an electrical signal indicative of the amount of oxygen present in the exhaust and / or flue gas.

[0008] Zirconium dioxide based oxygen sensors provide potentiometric indication. Potentiometric indication is considered a reliable oxygen measurement in combustion environments. It enables efficient and / or safe process control. Typically, a single probe is inserted into the process, for example into an exhaust gas stack and / or a flue gas stack and / or a chimney. Oxygen percentage measurement is used to optimize combustion efficiency in small boilers and / or furnaces. In large systems, operators often encounter exhaust gas stratification and / or flue gas stratification. Exhaust gas stratification and / or flue gas stratification includes multiple layers, each with a different oxygen concentration.

[0009] In order to obtain stratification information, the operator can install multiple probes in the exhaust gas stack and / or flue gas stack and / or chimney for efficient and safe operation. In each case, up to sixteen such probes can be installed.

[0010] Not only are high demands placed on the sensor unit in terms of temperature resistance and resistance to chemical decomposition. The power supply lines to the sensor unit must also meet the same or similar requirements. In particular, the power supply lines that are in electrical contact with the sensor unit must be temperature-resistant and resistant to chemical decomposition.

[0011] Utility model CN2685875Y from China was filed on July 17, 2003. Utility model CN2685875Y was published on March 16, 2005. Document CN2685875Y relates to an integral smoke analysis device based on zirconium dioxide. Document CN2685875Y discloses an analysis device with a measuring tip. A sensor based on zirconium dioxide, a heater and a temperature sensor are attached to a first end of the measuring tip. Two gas connections and a housing are located at a second end of the measuring tip. An outlet extends from the housing. CN2685875Y discloses measures for protecting a power line to the sensor based on zirconium dioxide and measures for protecting a power line to the temperature sensor. These measures include a measuring tube and a flashing plate attached to a flange.

[0012] ROSEMOUNT INC filed an international patent application WO2022 / 064271A1 on December 11, 2020. The application was published on March 31, 2022. WO2022 / 064271A1 claims priority on September 24, 2020. Application WO2022 / 064271A1 relates to an in-situ analytical device with an average. WO2022 / 064271A1 discloses an analytical device with a measuring tip. The measuring tip has a first end and a second end. A plurality of openings are located between the first and second ends of the measuring tip. A sensor unit and a flange for mounting the analytical device are located near the second end of the measuring tip. According to WO2022 / 064271A1, each sensor element requires a power line and / or a signal line.

[0013] Patent application DE102012211039A1 was filed on June 27, 2012 by Robert Bosch GmbH, 70469 Stuttgart. The application was published on January 2, 2014. DE102012211039A1 relates to a gas sensor for soot. Here, the sensor unit is arranged in a protective tube. In addition, a mounting connection having a reduced diameter compared to the diameter of the housing is provided.

[0014] Patent US6015533A was granted on January 18, 2000 to Motorola Inc (Schaumburg, IL). It relates to a sensor housing for a calorimetric sensor. The application date of US6015533A is November 14, 1997. US6015533A discloses a sensor connected by a plurality of cables. A cable bundle supports the cables within a tube. A wall defines an exhaust gas chamber. The cables and cable bundle are arranged outside the wall in such a manner that the cables and cable bundle and their sheaths are not exposed to the exhaust gas flow.

[0015] Patent application US2010 / 050738A1 was filed on August 26, 2008. The application was published on March 4, 2010. US2010 / 050738A1 relates to a sensor arrangement with a thermally insulated housing. The arrangement is divided into a first and a second cylindrical part. A flange is located between the first and second cylindrical parts. The first cylindrical part includes an inlet opening and an outlet opening. The second cylindrical part surrounds a plurality of cables. Similar to the cable bundle of US6015533A, the cables of US2010 / 050738A1 are guided by means of a cable support sleeve. The cable support sleeve includes channels for the individual cables.

[0016] SIEMENS AG filed European patent application EP4236640A1 on February 23, 2022. The application was published on August 30, 2023. EP4236640A1 relates to a holder for a printed circuit board. The holder of EP4236640A1 includes at least one tubular fastening element. At least one electrical conductor is arranged in at least one tubular fastening element. At least one tubular fastening element is guided through a first opening of the holder.

[0017] Patent application CN115791931A was filed on November 29, 2022. The application was published on March 14, 2023. CN115791931A discloses a packaging structure of an oxygen sensor for industrial automation of a combustion process. In particular, CN115791931A discloses a ceramic ring in a tube. According to CN115791931A, the ceramic insulator has multiple feedthroughs. Platinum wires pass through these feedthroughs.

[0018] The object of the present disclosure is to provide an arrangement with one or more power supply lines which enables gas analysis on a combustion device. To this end, the arrangement should be designed so that it can withstand thermal stresses as well as mechanical and chemical stresses during operation. Summary of the invention

[0019] An arrangement is provided comprising one or more power lines. The one or more power lines extend through a rod-shaped insulator. The one or more power lines preferably extend through the rod-shaped insulator parallel to each other. For this purpose, the rod-shaped insulator comprises one or more channels for the one or more power lines. The one or more power lines are guided by means of the one or more channels through the rod-shaped insulator. Furthermore, the one or more power lines are fixed by means of the one or more channels through the rod-shaped insulator.

[0020] The one or more power lines can in particular be guided through the rod-shaped insulator such that the through-line is gas-tight. It is particularly preferred that the arrangement is gas-tight with respect to the combustion gases from the combustion device. This means that the one or more channels surround the one or more power lines in such a way that the passage of gases, such as, for example, combustion gases, is prevented.

[0021] The one or more power lines are electrically conductive. The one or more power lines are made of a material having high temperature resistance. Therefore, the arrangement with the one or more power lines is suitable for use in a combustion device.

[0022] The rod-shaped insulator is made of an electrically insulating and temperature-resistant material. Preferably, the rod-shaped insulator is highly resistant to chemical decomposition caused by combustion gases. For example, the rod-shaped insulator can be made of a ceramic material.

[0023] The sheath surrounds the rod-shaped insulator and one or more power supply lines. The sheath must also be resistant to high temperatures and chemical decomposition. For example, the sheath can be made of corrosion-resistant steel. It is also important to ensure that the material of the sheath is compatible with the material of the outer wall of the combustion device. This is important if the sheath is guided through the wall of the combustion device.

[0024] There is a gap with a non-zero size between the sheath and the rod-shaped insulator. The gap can be filled with air and / or combustion gas, usually with gas, for example. The gap improves the thermal insulation of the rod-shaped insulator and the power line from the sheath.

[0025] The spacer provides a spacing between the rod-shaped insulator and the sheath. The spacer may include a surrounding body, in particular a cast body. The surrounding body (in particular a cast body) is arranged near one end of the sheath and fixes the rod-shaped insulator. The surrounding body (in particular a cast body) may also hermetically seal the arrangement in the direction of the end.

[0026] One or more passages for one or more power supply lines are provided in the surrounding body, in particular in a cast body.

[0027] The spacer may also include one or more rings that provide spacing between the rod-shaped insulator and the sheath.

[0028] The arrangement is suitable for installation in a combustion device. One or more power lines are suitable for being electrically connected to a sensor unit in the combustion device. For this purpose, one or more power lines are electrically connected to the sensor unit at one or more ends thereof. The sensor unit inside the combustion device can thus be electrically contacted. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Various features will become apparent to those skilled in the art from the following detailed description of the disclosed non-limiting embodiments. The drawings accompanying the detailed description can be briefly described as follows.

[0030] Figure 1 The power line arrangement is shown schematically.

[0031] Figure 2 The arrangement of the power lines is schematically shown as a feed-through through the wall. DETAILED DESCRIPTION

[0032] Figure 1 An arrangement of one or more power lines 1a, 1b, 1c according to the present disclosure is shown. The arrangement comprises a sheath 2. The sheath 2 may comprise, for example, a tubular sheath. The sheath 2 may in particular be a tubular sheath. In a particular embodiment, the sheath 2 is cylindrically symmetrical about an axis extending parallel to the power lines 1a, 1b, 1c.

[0033] The jacket 2 is preferably made of steel. It is particularly preferred that the jacket 2 is made of corrosion-resistant steel. The jacket 2 made of corrosion-resistant steel provides resistance to chemical degradation in the exhaust gas duct.

[0034] Furthermore, the sheath 2 can be made of ferritic steel. Furthermore, the sheath 2 can be made of austenitic steel.

[0035] At least one of the power lines 1a, 1b, 1c is preferably resistant to high temperatures. Thus, it can withstand the temperatures in the exhaust gas duct of a combustion device (such as a gas burner). In a high temperature resistant embodiment, at least one of the power lines 1a, 1b, 1c comprises a nickel conductor. In a specific embodiment, at least one of the power lines 1a, 1b, 1c comprises a nickel conductor. For example, at least one of the power lines 1a, 1b, 1c may comprise an alloy comprising more than seventy percent or more than seventy-five percent nickel by mass.

[0036] Ideally, all power lines 1a, 1b, 1c are temperature resistant. Thus, they withstand the temperatures in the exhaust duct of a combustion device (such as a gas burner). In a temperature resistant embodiment, all power lines 1a, 1b, 1c include nickel wires. In a specific embodiment, all power lines 1a, 1b, 1c include nickel wires. For example, all power lines 1a, 1b, 1c may include an alloy that includes more than seventy percent or more than seventy-five percent nickel by mass.

[0037] The power cords 1a, 1b, 1c each have a diameter which is smaller than the smallest inner diameter of the sheath 2. For example, the power cords may have a diameter of 0.5 mm or 1 mm. Diameters larger than 1 mm are also possible.

[0038] In one embodiment, all power lines 1a, 1b, 1c have the same diameter. The same diameter reduces the number of arrangement variants. As the number of variants increases, the risk of one of the variants failing during operation also decreases.

[0039] The rod-shaped insulator 3 is arranged inside the sheath 2. The rod-shaped insulator 3 is preferably a rod-shaped electrical insulator and / or a rod-shaped electrical insulation. The rod-shaped insulator 3 preferably has a resistivity p of at least one megohm·cm at a temperature of 873 Kelvin:

[0040] At 873 Kelvin, ρ>1MΩ·cm

[0041] The resistivity p at a temperature of 873 Kelvin is particularly preferably greater than 5 megohm·cm:

[0042] At 873 Kelvin, ρ>5MΩ·cm

[0043] Furthermore, at a temperature of 873 Kelvin, the resistivity p is preferably greater than ten megohm·cm:

[0044] At 873 Kelvin, ρ>10MΩ·cm

[0045] The high resistivity enables sufficient electrical insulation between the power supply lines 1a, 1b, 1c. Therefore, any signal obtained from the sensor element connected to the power supply lines 1a, 1b, 1c is not distorted to a great extent.

[0046] In one embodiment, the rod-shaped insulator 3 comprises a ceramic, in particular an alumina ceramic. In a particular embodiment, the rod-shaped insulator 3 is made of a ceramic, in particular an alumina ceramic. Preferably, the alumina ceramic has a purity greater than 92%. Particularly preferably, the alumina ceramic has a purity greater than 96%. Ideally, the purity of the alumina ceramic exceeds 99%. An improvement in the purity of the ceramic results in a more predictable behavior in terms of electrical insulation and mechanical strength.

[0047] In another embodiment, the rod-shaped insulator 3 comprises a ceramic material based on magnesium silicate. In addition, the rod-shaped insulator 3 may comprise a ceramic material based on magnesium silicate. In a further embodiment, the rod-shaped insulator 3 comprises porcelain. In addition, the rod-shaped insulator 3 may comprise porcelain. In yet another embodiment, the rod-shaped insulator 3 comprises porcelain. In addition, the rod-shaped insulator 3 may comprise porcelain.

[0048] The rod-shaped insulator 3 has at least one channel for one of the power lines 1a, 1b, 1c. Preferably, the rod-shaped insulator 3 has at least as many channels as the power lines 1a, 1b, 1c that the arrangement has. In addition, the number of channels passing through the rod-shaped insulator 3 can exceed the number of power lines 1a, 1b, 1c. In the case where the number of channels passing through the insulator 3 exceeds the number of power lines 1a, 1b, 1c, additional power lines can be added at a later point in time. The same rod-shaped insulator 3 may also be used for embodiments with different numbers of power lines 1a, 1b, 1c. The use of a rod-shaped insulator 3 with a predetermined number of channels covering all embodiments limits the number of variants. Therefore, the possibility of one of the variants failing during its operation is reduced.

[0049] The one or more passages through the rod-shaped insulator 3 each have a diameter. For example, the one or more passages through the rod-shaped insulator 3 may have a diameter of at least 0.6 mm or at least 1.1 mm. One or more passages through the rod-shaped insulator 3 having a diameter greater than 1.5 mm are also possible.

[0050] In the case of multiple passages through the rod-shaped insulator 3, it is preferred that at least two passages through the rod-shaped insulator 3 have the same diameter. It is particularly preferred that all passages through the rod-shaped insulator 3 have the same diameter. The same diameter of the passages through the rod-shaped insulator 3 leads to a smaller number of variants. Therefore, the probability that one of the variants fails during its operation is reduced. In addition, the cost for producing the rod-shaped insulator 3 is reduced.

[0051] At least one passage through the rod-shaped insulator 3 may include a hole, for example a hole with a circular cross section. In particular, at least one passage through the rod-shaped insulator 3 may be a hole, for example a hole with a circular cross section. Furthermore, all passages through the rod-shaped insulator 3 may include holes, for example holes with a circular cross section. Furthermore, all passages through the rod-shaped insulator 3 may be holes, for example holes with a circular cross section. Designing the passage through the rod-shaped insulator 3 as a hole makes it possible to produce the insulator 3 using standard tools.

[0052] The sheath 2 has a first end 4a and a second end 4b. The first end 4a of the sheath 2 is different from the second end 4b of the sheath 2. The first end 4a of the sheath 2 is opposite to the second end 4b of the sheath 2.

[0053] The sheath 2 has a first opening at its first end 4a. The first opening preferably has a circular cross section. The sheath 2 has a second opening at its second end 4b. The second opening preferably has a circular cross section. The first opening of the sheath 2 is different from the second opening of the sheath 2. In one embodiment, the first opening of the sheath 2 and the second opening of the sheath 2 both have a circular cross section.

[0054] The cross-sectional area of ​​the first opening of the sheath 2 is usually different from the cross-sectional area of ​​the second opening of the sheath 2. In particular, the minimum area of ​​the cross-sectional area of ​​the first opening of the sheath 2 is usually different from the minimum area of ​​the cross-sectional area of ​​the second opening. However, embodiments are possible in which the cross-sectional areas of the first and second openings of the sheath 2 are the same. In particular, the minimum areas of the cross-sectional areas of the first and second openings of the sheath 2 are the same.

[0055] The surrounding body 5 is arranged in the direction of the second end 4b of the sheath 2. The surrounding body 5 is adjacent to the rod-shaped insulator 3 and the sheath 2. The surrounding body 5 has a first surface, which is adjacent to the inner side surface of the sheath 2. The surrounding body 5 has a second surface, which is adjacent to the outer side surface of the rod-shaped insulator 3. Preferably, the first surface of the surrounding body 5 is cylindrical. Preferably, the second surface of the surrounding body 5 is cylindrical. In one embodiment, the first and second surfaces of the surrounding body 5 are cylindrical.

[0056] The minimum spacing between the first and second surfaces of the surrounding body 5 influences the spacing of the rod-shaped insulator 3 from the sheath 2. The spacing between the rod-shaped insulator 3 and the sheath 2 may be, for example, less than 10 mm or less than 5 mm. The spacing between the rod-shaped insulator 3 and the sheath 2 facilitates the production of the arrangement. The spacing between the rod-shaped insulator 3 and the sheath 2 makes possible a (limited) thermal insulation of the insulator 3 and the power lines 1a, 1b, 1c from the sheath 2. This (limited) thermal insulation is advantageous for the increased temperatures in the exhaust gas duct of the combustion device.

[0057] In one embodiment, the surround 5 is at least partially made of a casting compound. For example, the surround 5 can be made entirely or partially of a heat-resistant epoxy resin. In a different embodiment, the surround 5 is made of polytetrafluoroethylene.

[0058] The surrounding body 5 as a cast body contributes to the gas-tight arrangement.

[0059] According to one aspect of the present disclosure, an additive production method such as three-dimensional pressing is used to produce the surround 5 or a portion of the surround 5. In a particular embodiment, the surround 5 or a portion of the surround 5 may be produced by selective laser sintering.

[0060] The surrounding body 5 preferably has a resistivity p of at least 1 MΩ·cm at a temperature of 393 Kelvin:

[0061] At 393 Kelvin, ρ>1MΩ·cm

[0062] The resistivity ρ at a temperature of 393 Kelvin is particularly preferably greater than 5 MΩ·cm:

[0063] At 393 Kelvin, ρ>5MΩ·cm

[0064] Furthermore, at a temperature of 393 Kelvin, the resistivity p is preferably greater than 10 megohm·cm:

[0065] At 393 Kelvin, ρ>10MΩ·cm

[0066] The high resistivity enables sufficient electrical insulation between the power supply lines 1a, 1b, 1c. Therefore, any signal obtained from the sensor element connected to the power supply lines 1a, 1b, 1c is not distorted to a great extent.

[0067] The surround 5 has at least one channel for one of the power supply lines 1a, 1b, 1c. Preferably, the surround 5 has at least as many channels as the arrangement has power supply lines 1a, 1b, 1c. Furthermore, the number of channels passing through the surround 5 may exceed the number of power supply lines 1a, 1b, 1c. In case the number of channels passing through the insulator 3 exceeds the number of power supply lines 1a, 1b, 1c, additional power supply lines may be added at a later point in time. Furthermore, the same surround 5 may also be used for embodiments having a different number of power supply lines 1a, 1b, 1c. The use of a surround 5 with a predetermined number of channels covering all embodiments limits the number of variants. Therefore, the likelihood of one of the variants failing during its operation is reduced.

[0068] The one or more passages through the surrounding body 5 each have a diameter. For example, the one or more passages through the surrounding body 5 may have a diameter of at least 0.6 mm or at least 1.1 mm. One or more passages through the surrounding body 5 having a diameter greater than 1.5 mm are also possible.

[0069] In the case of a plurality of passages through the surround 5, it is preferred that at least two passages through the surround 5 have the same diameter. It is particularly preferred that all passages through the surround 5 have the same diameter. The same diameter of the passages through the surround 5 results in a small number of variants. Thus, the probability that one of the variants will fail during its operation is reduced. In addition, the costs for producing the surround 5 are reduced.

[0070] It is particularly preferred that the rod-shaped insulator 3 and the surrounding body 5 have the same number of channels. Ideally, the channels through the rod-shaped insulator 3 and the surrounding body 5 also have the same or substantially the same diameter. Substantially the same diameter here means that the diameters are the same except for manufacturing tolerances. In this case, the channels through the rod-shaped insulator 3 and through the surrounding body 5 are arranged in such a way that at least one power line 1a extends directly through the arrangement. In one embodiment, the corresponding channels are arranged in such a way that all power lines 1a, 1b, 1c extend directly through the arrangement. Extending directly through the arrangement makes it possible to have straight channels through the rod-shaped insulator 3 and through the surrounding body 5 without kinks.

[0071] Furthermore, the passages through the rod-shaped insulator 3 and the surround 5 may also have similar diameters. For example, the passages through the surround 5 may each be slightly wider than the passages through the rod-shaped insulator 3, in order to facilitate simpler assembly. In this case, the passages through the rod-shaped insulator 3 and through the surround 5 are arranged in such a way that at least one power line 1a extends directly through the arrangement. In one embodiment, the respective passages are arranged in such a way that all power lines 1a, 1b, 1c extend directly through the arrangement. Extending directly through the arrangement makes it possible to have straight passages through the rod-shaped insulator 3 and through the surround 5 without kinks.

[0072] At least one passage through the surrounding body 5 may comprise a hole, for example a hole with a circular cross section. In particular, at least one passage through the surrounding body 5 may be a hole, for example a hole with a circular cross section. Furthermore, all passages through the surrounding body 5 may comprise holes, for example holes with a circular cross section. Furthermore, all passages through the surrounding body 5 may be holes, for example holes with a circular cross section. Designing the passages through the surrounding body 5 as holes makes it possible to produce the surrounding body 5 using standard tools.

[0073] A recess for the first ring 6a, 6b is provided in the surrounding body 5. The first ring 6a, 6b surrounds the rod-shaped insulator 3. The first ring 6a, 6b abuts against the rod-shaped insulator 3. In addition, the first ring 6a, 6b abuts against the sheath 2. Therefore, the first ring 6a, 6b abuts against both the rod-shaped insulator 3 and also the sheath 2. The first ring 6a, 6b is located between the rod-shaped insulator 3 and the sheath 2. For example, the first ring 6a, 6b can include a portion. The portion of the first ring 6a, 6b can extend in a first groove or a first groove formed by the surrounding body 5 and / or the sheath 2.

[0074] In one embodiment, the first ring 6a, 6b is an O-ring, such as, for example, a temperature-resistant O-ring. In particular, the O-ring can be made of a silicone polymer. In a further embodiment, the first ring 6a, 6b is a retaining ring, such as, for example, a temperature-resistant retaining ring. In particular, the retaining ring can be made of a silicone polymer. In yet another embodiment, the first ring 6a, 6b is an O-ring and a retaining ring, such as, for example, a temperature-resistant O-ring and a retaining ring. In particular, the O-ring and the retaining ring can be made of a silicone polymer.

[0075] The first ring 6a, 6b may also be a sealing ring. This means that the first ring 6a, 6b helps to ensure that no gas is conducted between the ends 4a, 4b. For example, the first ring 6a, 6b helps to ensure that no combustion gas is conducted between the ends 4a, 4b of the arrangement. In a particular embodiment, the first ring 6a, 6b is both an O-ring and a sealing ring. In another particular embodiment, the first ring 6a, 6b is both an O-ring and a retaining ring and a sealing ring.

[0076] The first rings 6a, 6b are arranged near the second end 4b of the arrangement. This means that the first rings 6a, 6b have a minimum spacing from the first end 4a and have a minimum spacing from the second end 4b. In this case, the minimum spacing of the first rings 6a, 6b from the first end 4a is greater than the minimum spacing from the second end 4b.

[0077] The second ring 7a, 7b is arranged closer to the first end 4a. This means that the second ring 7a, 7b has a minimum spacing from the first end 4a and has a minimum spacing from the second end 4b. In this case, the minimum spacing of the second ring 7a, 7b from the first end 4a is smaller than its minimum spacing from the second end 4b. The minimum spacing of the second ring 7a, 7b from the first end 4a is smaller than the spacing of the first ring 6a, 6b from the same end 4a. The minimum spacing of the second ring 7a, 7b from the second end 4a is greater than the spacing of the first ring 6a, 6b from the same end 4b.

[0078] The second ring 7a, 7b surrounds the rod-shaped insulator 3. The second ring 7a, 7b abuts against the rod-shaped insulator 3. In addition, the second ring 7a, 7b abuts against the sheath 2. Therefore, the second ring 7a, 7b abuts against both the rod-shaped insulator 3 and the sheath 2. For example, the second ring 7a, 7b may include one portion. The portion of the second ring 7a, 7b may extend in a second groove or a second groove formed by the sheath 2. Therefore, the second ring 7a, 7b is located between the rod-shaped insulator 3 and the sheath 2.

[0079] In one embodiment, the second ring 7a, 7b is a clasp, such as, for example, a temperature-resistant clasp. In particular, the clasp can be made of corrosion-resistant steel. In a further embodiment, the second ring 7a, 7b is a retaining ring, such as, for example, a temperature-resistant retaining ring. In particular, the retaining ring can be made of corrosion-resistant steel. In yet another embodiment, the second ring 7a, 7b is a clasp and a retaining ring, such as, for example, a temperature-resistant clasp and a retaining ring. In particular, the clasp and the retaining ring can be made of corrosion-resistant steel.

[0080] The first ring 6a, 6b and the second ring 7a, 7b help to fix the rod-shaped insulator 3 against the sheath 2. In particular, the first ring 6a, 6b and the second ring 7a, 7b enable the aforementioned minimum spacing between the rod-shaped insulator 3 and the sheath 2. In addition, the first ring 6a, 6b and the second ring 7a, 7b prevent the rod-shaped insulator 3 from moving laterally between the ends 4a, 4b.

[0081] The rod-shaped insulator 3 and the sheath 2 may have different coefficients of thermal expansion. For example, the rod-shaped insulator 3 may have a coefficient of thermal expansion of 2.10 in the range between 313 Kelvin and 673 Kelvin. -6 / Kelvin and 10·10 -6 / Kelvin coefficient of thermal expansion α:

[0082] 2.10-6 / Kelvin<α<10·10 -6 / Kelvin

[0083] In particular, the rod-shaped insulator 3 may have a relative humidity of 3·10 in the range between 313 Kelvin and 673 Kelvin. -6 Kelvin and 9.10 -6 Thermal expansion coefficient α between Kelvin:

[0084] March 10 -6 / Kelvin<α<9·10 -6 / Kelvin

[0085] Particularly preferably, the rod-shaped insulator 3 may have a thermal conductivity of 4·10 in the range between 313 Kelvin and 673 Kelvin. -6 Kelvin and 8.10 -6 Thermal expansion coefficient α between Kelvin:

[0086] 4.10 -6 / Kelvin<α<8·10 -6 / Kelvin

[0087] The aforementioned coefficient of thermal expansion α relates to an axis defined by at least one of the power supply lines 1a, 1b, 1c. This means that the coefficient of thermal expansion α is an axial coefficient along the aforementioned axis.

[0088] In addition, sheath 2 can have a 10·10 -6 / Kelvin and 20·10 -6 / Kelvin coefficient of thermal expansion α:

[0089] 10.10 -6 / Kelvin<α<20·10 -6 / Kelvin

[0090] In particular, sheath 2 may have a thermal conductivity of 11·10 -6 / Kelvin and 19·10 -6 / Kelvin coefficient of thermal expansion α:

[0091] 11.10 -6 / Kelvin<α<19·10 -6 / Kelvin

[0092] It is particularly preferred that the thermal expansion coefficient α of the sheath 2 at 293 Kelvin is between 11.10 -6 / Kelvin and 18·10 -6 / Between Kelvin:

[0093] 11.10 -6 / Kelvin<α<18·10 -6 / Kelvin

[0094] The aforementioned coefficient of thermal expansion α relates to an axis defined by at least one of the power supply lines 1a, 1b, 1c. This means that the coefficient of thermal expansion α is an axial coefficient along the aforementioned axis.

[0095] Mechanical stresses can be generated in this arrangement due to the different coefficients of thermal expansion of the sheath 2 and the rod-shaped insulator 3. The problem of mechanical stresses is exacerbated by the fact that the arrangement is exposed to a wide range of temperatures during operation. The first ring 6a, 6b and the second ring 7a, 7b support the rod-shaped insulator 3 relative to the sheath 2 in such a way that cracks due to these mechanical stresses are avoided.

[0096] Optionally, the third ring 8a, 8b is arranged even closer to the first end 4a. This means that the third ring 8a, 8b has a minimum spacing from the first end 4a and has a minimum spacing from the second end 4b. In this case, the minimum spacing of the third ring 8a, 8b from the first end 4a is smaller than its minimum spacing from the second end 4b. The minimum spacing of the third ring 8a, 8b from the first end 4a is smaller than the spacing of the first ring 6a, 6b from the same end 4a. The minimum spacing of the third ring 8a, 8b from the second end 4a is greater than the spacing of the first ring 6a, 6b from the same end 4b.

[0097] The minimum distance between the third rings 8a, 8b and the first end 4a is smaller than the distance between the second rings 7a, 7b and the same end 4a. The minimum distance between the third rings 8a, 8b and the second end 4a is greater than the distance between the second rings 7a, 7b and the same end 4b.

[0098] The optional third ring 8a, 8b surrounds the rod-shaped insulator 3. The third ring 8a, 8b does not abut against the rod-shaped insulator 3. This means that the third ring 8a, 8b and the rod-shaped insulator 3 do not contact each other. The third ring 8a, 8b and the rod-shaped insulator 3 are spaced apart from each other. The third ring 8a, 8b abuts against the sheath 2. For example, the third ring 8a, 8b may include a portion. The portion of the third ring 8a, 8b may extend in the third groove or the second groove formed by the sheath 2. Therefore, the third ring 8a, 8b is located between the rod-shaped insulator 3 and the sheath 2.

[0099] In one embodiment, the third ring 8a, 8b is a clasp, such as, for example, a temperature-resistant clasp. In particular, the clasp can be made of corrosion-resistant steel. In a further embodiment, the third ring 8a, 8b is a retaining ring, such as, for example, a temperature-resistant retaining ring. In particular, the retaining ring can be made of corrosion-resistant steel. In yet another embodiment, the third ring 8a, 8b is a clasp and a retaining ring, such as, for example, a temperature-resistant clasp and a retaining ring. In particular, the clasp and the retaining ring can be made of corrosion-resistant steel.

[0100] Figure 2 It shows Figure 1The arrangement of the power supply lines 1a, 1b, 1c in the wall 9 is installed. In this case, the arrangement with the power supply lines 1a, 1b, 1c is divided into a first part 10a and a second part 10b. Therefore, the arrangement forms a feed-through of the power supply lines 1a, 1b, 1c through the wall 9.

[0101] The first part 10a is located outside the exhaust gas chimney of the combustion device and outside the flue gas chimney of the combustion device and / or outside the chimney of the combustion device. The first part 10a is also located outside the combustion chamber of the combustion device.

[0102] Preferably, the first portion 10a is surrounded by ambient air having a temperature between 263 Kelvin and 318 Kelvin, in particular between 273 Kelvin and 308 Kelvin. Particularly preferably, the first portion 10a is surrounded by ambient air having a temperature between 283 Kelvin and 298 Kelvin. This means that the first portion 10a is surrounded by air having a temperature close to room temperature.

[0103] Furthermore, the first part 10a is surrounded by air having a pressure between 1100 hPa and 700 hPa, in particular between 1100 hPa and 800 hPa. It is particularly preferred that the first part 10a is surrounded by ambient air having a pressure between 1050 hPa and 900 hPa. This means that the first part 10a is surrounded by air having a pressure close to normal conditions.

[0104] The second portion 10b is located in a structure selected from the following:

[0105] Exhaust chimneys of combustion plants,

[0106] Flue gas chimneys of combustion plants,

[0107] chimneys of combustion devices,

[0108] The second portion 10b may also be located in two structures selected from the following:

[0109] Exhaust chimneys of combustion plants,

[0110] Flue gas chimneys of combustion plants,

[0111] The chimney of a combustion device.

[0112] For example, the same structure can be used as both a waste gas chimney of a combustion plant and a flue gas chimney of the combustion plant. This means that the structure comprises a waste gas chimney and a flue gas chimney of the combustion plant.

[0113] Furthermore, the same structure can be used as both the exhaust gas chimney of the combustion device and the chimney of the combustion device. This means that the structure comprises the exhaust gas chimney and the chimney of the combustion device.

[0114] Furthermore, the same structure can be used as both a flue gas chimney of the combustion device and a chimney of the combustion device. This means that the structure comprises a flue gas chimney and a chimney of the combustion device.

[0115] In addition, the second part 10b can be located in three structures, namely in the exhaust gas chimney of the combustion device, in the flue gas chimney of the combustion device, and in the chimney of the combustion device. For example, the same structure can be used as the exhaust gas chimney of the combustion device, the flue gas chimney of the combustion device, and the chimney of the combustion device at the same time. This means that the structure includes the exhaust gas chimney and the flue gas chimney of the combustion device and the chimney.

[0116] Furthermore, the second portion 10b may be located within a combustion chamber of a combustion device.

[0117] Preferably, the second portion 10b is surrounded by exhaust gases and / or flue gases having a temperature of up to 873 Kelvin, in particular up to 673 Kelvin. It is particularly preferred that the second portion 10b of the arrangement is surrounded by exhaust gases and / or flue gases having a temperature of up to 500 Kelvin. This means that the second portion 10b is surrounded by exhaust gases and / or flue gases from a combustion chamber of a combustion device.

[0118] Typically, there is a first temperature gradient in the second portion 10b. This means that the temperature of the exhaust gases and / or flue gases decreases with increasing distance from the combustion chamber of the combustion device. Typically, there is a second temperature gradient in the second portion 10b. This means that the temperature of the exhaust gases and / or flue gases decreases in the direction of the wall.

[0119] In the second part 10b, the exhaust gas and / or flue gas has a pressure that is the same or similar to the pressure in the first part 10a. Similar pressure means that the pressure difference is less than 100 hPa, preferably less than 50 hPa, particularly preferably less than 20 hPa. A large pressure difference reduces the mechanical load on the wall 9 and the arrangement comprising the first part 10a and the second part 10b.

[0120] The wall 9 and the jacket 2 are for example metallic, preferably made of steel, in particular corrosion resistant steel. During operation, the wall 9 and the jacket 2 are subjected to a wide range of temperatures. Due to the different thermal expansion coefficients α between the wall 9 and the jacket 2, cracks may occur.

[0121] A mark may be attached to the outside of the jacket 2, which indicates to the fitter the installation depth in the wall 9 of the burner. In particular, a mark may be attached to the outside of the jacket 2, which indicates to the fitter the installation depth in the outer wall 9 of the burner. In addition, a scale may be attached to the outside of the jacket 2, which indicates to the fitter the installation depth in the outer wall 9 of the burner. The scale includes a plurality of values, and the fitter thus selects a suitable installation depth.

[0122] In order to avoid mechanical stress, the wall 9 and the jacket 2 are preferably made of materials with similar thermal expansion coefficients α. For example, at 293 Kelvin, the thermal expansion coefficients α of the wall 9 and the jacket 2 may be within 10·10 -6 Kelvin and 20.10 -6 Between Kelvin:

[0123] 10.10 -6 / Kelvin<α<20·10 -6 / Kelvin

[0124] In particular, the wall 9 and the jacket 2 may have a relative humidity of 11.10 -6 / Kelvin and 19·10 -6 / Kelvin coefficient of thermal expansion α:

[0125] 11.10 -6 / Kelvin<α<19·10 -6 / Kelvin

[0126] It is particularly preferred that the wall 9 and the jacket 2 have a relative humidity of 11.10 -6 / Kelvin and 18·10 -6 / Kelvin coefficient of thermal expansion α:

[0127] 11.10 -6 / Kelvin<α<18·10 -6 / Kelvin

[0128] The aforementioned coefficient of thermal expansion α relates to an axis defined by at least one of the power supply lines 1a, 1b, 1c. This means that the coefficient of thermal expansion α is an axial coefficient along the aforementioned axis.

[0129] According to one aspect of the disclosure, the sheath 2 is screwed into the wall 9. According to one aspect of the disclosure, the sheath 2 is screwed into the outer wall 9.

[0130] In a further embodiment, a layer for thermal decoupling is provided between the jacket 2 and the wall 9. For example, a layer for thermal decoupling is provided between the jacket 2 and the outer wall 9 of the combustion device. The layer for thermal decoupling can in particular comprise glass fiber reinforced plastic and / or ceramic material. In one embodiment, the layer for thermal decoupling is made of glass fiber reinforced plastic and / or ceramic material.

[0131] In other words, the present disclosure relates to an arrangement comprising at least one first electrically conductive power line (1a, 1b, 1c), a sheath (2) and a rod-shaped insulator (3);

[0132] wherein the sheath (2) has a first end (4a) and a second end (4b), and the first end (4a) is different from the second end (4b), and the first end (4a) is opposite to the second end (4b), and the sheath (2) has a first opening at the first end (4a) and a second opening at the second end (4b);

[0133] wherein at least one first power supply line (1a, 1b, 1c) extends from a first end (4a) to a second end (4b) through the arrangement and defines an axis;

[0134] wherein the rod-shaped insulator (3) comprises at least one channel passing through the rod-shaped insulator (3), and a first portion of at least one power line (1a, 1b, 1c) extends in the at least one channel passing through the rod-shaped insulator (3);

[0135] wherein at least one first power line (1a, 1b, 1c) has a first length between the first opening and the second opening;

[0136] wherein a first portion of at least one power line (1a, 1b, 1c) has a second length in at least one passage passing through the rod-shaped insulator (3), and the second length is smaller than the first length;

[0137] wherein the rod-shaped insulator (3) includes an outer surface radially outward from the axis, and the sheath (2) includes an inner surface radially outward from the axis, wherein the outer surface of the rod-shaped insulator (3) and the inner surface of the sheath (2) each extend parallel to the axis, so that the outer surface of the rod-shaped insulator (3) and the inner surface of the sheath (2) are opposite to each other; and

[0138] The arrangement comprises a gap having a size and arranged between an outer surface of the rod-shaped insulator (3) and an inner surface of the sheath (2), and comprises a spacer (5, 6a, 6b, 7a, 7b) to provide a space between the rod-shaped insulator (3) and the sheath (2), wherein the spacer (5, 6a, 6b, 7a, 7b) defines the size of the gap.

[0139] Furthermore, the present disclosure includes one of the aforementioned arrangements, wherein the arrangement includes at least one second conductive power line (1a, 1b, 1c), and the at least one second conductive power line (1a, 1b, 1c) is different from the at least one first conductive power line (1a, 1b, 1c). The rod-shaped insulator (3) includes at least one additional channel, and the at least one second conductive power line (1a, 1b, 1c) extends through the at least one additional channel.

[0140] The at least one first electrically conductive power supply line (1a, 1b, 1c) is preferably at least one first electrically conductive power supply line to a sensor unit, in particular to a sensor unit in a combustion device. The at least one second electrically conductive power supply line (1a, 1b, 1c) is preferably at least one second electrically conductive power supply line to a sensor unit, in particular to a sensor unit in a combustion device. The sensor unit can be arranged, for example, in a structure of the combustion device, the structure being selected from:

[0141] - Exhaust chimney,

[0142] - Flue gas chimney,

[0143] -Chimney.

[0144] In one embodiment, at least one first conductive power line (1a, 1b, 1c) is electrically connected to the sensor unit. In one embodiment, at least one first conductive power line (1a, 1b, 1c) and at least one second conductive power line (1a, 1b, 1c) are electrically connected to the sensor unit.

[0145] In one embodiment, the first length is defined as the distance between the first end (4a) and the second end (4b).

[0146] Furthermore, the present disclosure includes one of the aforementioned arrangements, wherein a first portion of at least one power line (1a, 1b, 1c) has a second length in at least one passage through the rod-shaped insulator (3), and the second length is shorter than the first length.

[0147] Furthermore, the present disclosure includes one of the aforementioned arrangements, wherein a first portion of at least one power line (1a, 1b, 1c) has a second length in at least one passage through the rod-shaped insulator (3), and the second length is smaller than the first length.

[0148] In addition, the present disclosure includes one of the aforementioned arrangements, wherein the axis is an axis of symmetry. In addition, the present disclosure includes one of the aforementioned arrangements, wherein the axis extends through the center of the arrangement. In one embodiment, the axis extends from a first end (4a) of the arrangement to a second end (4b) of the arrangement.

[0149] The present disclosure also includes one of the aforementioned arrangements, wherein the outer surface of the rod-shaped insulator (3) and the inner surface of the sheath (2) each extend along an axis.

[0150] Furthermore, the present disclosure includes one of the aforementioned arrangements, wherein the outer surface of the rod-shaped insulator (3) and the inner surface of the sheath (2) are spaced apart radially outwardly from the axis. Preferably, this defines and / or determines the size of the gap.

[0151] In addition, the present disclosure includes one of the foregoing arrangements, wherein the arrangement includes a gap having a size and disposed between the outer surface of the rod insulator (3) and the inner surface of the sheath (2), and includes spacers (5, 6a, 6b, 7a, 7b) to provide a spacing between the rod insulator (3) and the sheath (2), wherein the spacers (5, 6a, 6b, 7a, 7b) define the size of the gap.

[0152] The foregoing gap is preferably a radial gap. In one embodiment, the gap extends along a closed line around the outer side of the rod insulator (3). In a particular embodiment, the gap extends along a circle or an ellipse around the outer side of the rod insulator (3).

[0153] The present disclosure also relates to one of the foregoing arrangements, wherein the spacers (5, 6a, 6b, 7a, 7b) are designed to provide a space between the outer surface of the rod insulator (3) and the inner surface of the sheath (2) and to define the size of the gap.

[0154] In addition, the present disclosure relates to one of the foregoing arrangements, wherein at least one first power line (1a, 1b, 1c) extends through the arrangement in a straight line from the first end (4a) to the second end (4b) and defines an axis.

[0155] The present disclosure also relates to one of the foregoing methods,

[0156] wherein the spacers (5, 6a, 6b, 7a, 7b) include a surrounding body (5), and

[0157] wherein the surrounding body (5) includes at least one first portion extending perpendicular to the axis and adjacent to the rod insulator (3), and at least one second portion extending parallel to the axis and adjacent to the sheath (2).

[0158] In addition, the present disclosure includes one of the foregoing arrangements having a surrounding body (5), wherein the second portion of the surrounding body (5) is different from the first portion of the surrounding body (5).

[0159] The surrounding body (5) is different from the rod insulator (3). In one embodiment, the surrounding body (5) can be mechanically separated from the rod insulator (3) without machining. In one embodiment, the surrounding body (5) can be mechanically separated from the rod insulator (3) without machining. In another hermetic embodiment, the surrounding body (5) is mechanically connected to and / or cast on the sheath (2) and the rod insulator (3) in such a way that machining is necessary to separate the surrounding body (5) from the sheath (2) and to separate the surrounding body (5) from the rod insulator (3).

[0160] Furthermore, the present disclosure comprises one of the aforementioned arrangements with a surrounding body (5), wherein the surrounding body (5) comprises at least one third portion extending parallel to the axis and adjoining the outer surface of the rod-shaped insulator (3).

[0161] The present disclosure also includes one of the aforementioned arrangements having a surround (5) and a third portion, wherein the third portion of the surround (5) is different from the second portion of the surround (5). In addition, the present disclosure includes one of the aforementioned arrangements having a surround (5) and a third portion, wherein the third portion of the surround (5) is different from the first portion of the surround (5).

[0162] Furthermore, the present disclosure relates to one of the aforementioned arrangements having a surrounding body (5),

[0163] The surrounding body (5) has at least one channel, and a second portion of at least one power supply line (1a, 1b, 1c) extends through the surrounding body (5) in the at least one channel.

[0164] Furthermore, the present disclosure relates to one of the aforementioned arrangements having a surrounding body (5),

[0165] The surrounding body (5) can be inserted onto the rod-shaped insulator (3) in the axial direction from the axis outwards.

[0166] Furthermore, the present disclosure includes one of the aforementioned arrangements with a surround (5), wherein the surround (5) can be attached to the rod-shaped insulator (3) by being plugged on from the axis outwards in the axial direction.

[0167] Furthermore, the present disclosure relates to one of the aforementioned arrangements having a surrounding body (5),

[0168] The surrounding body (5) can be inserted into the jacket (2) in the axial direction from the axis outwards.

[0169] Furthermore, the present disclosure comprises one of the aforementioned arrangements with a surround (5), wherein the surround (5) can be attached to the jacket (2) by being inserted into the jacket (2) in an axial direction from the axis outwards. To this end, the jacket (2) can comprise a fastening device comprising a fastening surface extending perpendicularly to the axis.

[0170] The present disclosure also relates to one of the aforementioned arrangements having a surrounding body (5),

[0171] The surrounding body (5) has a first distance to the first end (4a) and a second distance to the second end (4b), wherein the first distance between the surrounding body (5) and the first end (4a) is greater than the second distance between the surrounding body (5) and the second end (4b).

[0172] In addition, the present disclosure includes one of the aforementioned arrangements having a surround (5), wherein the surround (5) has a first spacing to the first end (4a) and a second spacing to the second end (4b), wherein the first spacing of the surround (5) from the first end (4a) is longer than the second spacing of the surround (5) from the second end (4b).

[0173] Furthermore, the present disclosure includes one of the aforementioned arrangements having a surrounding body (5), wherein the surrounding body (5) has a first spacing from a first opening of the sheath (2) and a second spacing from a second opening of the sheath (2), wherein the first spacing of the surrounding body (5) from the first opening of the sheath (2) is greater than the second spacing of the surrounding body (5) from the second opening of the sheath (2).

[0174] Furthermore, the present disclosure includes one of the aforementioned arrangements having a surrounding body (5), wherein the surrounding body (5) has a first spacing from a first opening of the sheath (2) and a second spacing from a second opening of the sheath (2), wherein the first spacing of the surrounding body (5) from the first opening of the sheath (2) is longer than the second spacing of the surrounding body (5) from the second opening of the sheath (2).

[0175] Furthermore, the present disclosure relates to one of the aforementioned arrangements having a surrounding body (5),

[0176] The rod-shaped insulator (3) and the surrounding body (5) are each an electrical insulator and each have a resistivity p of at least 1 megohm·cm at a temperature of 393 Kelvin.

[0177] The present disclosure also includes one of the aforementioned arrangements having a surrounding body (5), wherein the rod-shaped insulator (3) and the surrounding body (5) are each an electrical insulator and each have a resistivity p of at least ten megohm-cm at a temperature of 393 Kelvin.

[0178] The present disclosure also includes one of the aforementioned arrangements having a surrounding body (5), wherein the rod-shaped insulator (3) and the surrounding body (5) are each an electrical insulator and each have a resistivity p of at least 1 megohm·cm at a temperature of 473 Kelvin.

[0179] The present disclosure also includes one of the aforementioned arrangements having a surrounding body (5), wherein the rod-shaped insulator (3) and the surrounding body (5) are each an electrical insulator and each have a resistivity p of at least ten megohm-cm at a temperature of 473 Kelvin.

[0180] The present disclosure also includes one of the aforementioned arrangements having a surrounding body (5), wherein the rod-shaped insulator (3) and the surrounding body (5) are each an electrical insulator and each have a resistivity p of at least 1 megohm·cm at a temperature of 673 Kelvin.

[0181] The present disclosure also includes one of the aforementioned arrangements having a surrounding body (5), wherein the rod-shaped insulator (3) and the surrounding body (5) are each an electrical insulator and each have a resistivity p of at least ten megohm-cm at a temperature of 673 Kelvin.

[0182] The present disclosure also includes one of the aforementioned arrangements having a surrounding body (5), wherein the rod-shaped insulator (3) and the surrounding body (5) are each an electrical insulator and each have a resistivity p of at least 1 megohm·cm at a temperature of 873 Kelvin.

[0183] The present disclosure also includes one of the aforementioned arrangements having a surrounding body (5), wherein the rod-shaped insulator (3) and the surrounding body (5) are each an electrical insulator and each have a resistivity p of at least ten megohm-cm at a temperature of 873 Kelvin.

[0184] Furthermore, the present disclosure relates to one of the aforementioned arrangements,

[0185] The spacer (5, 6a, 6b, 7a, 7b) comprises a first ring (6a, 6b) which extends along a first closed curve around the rod-shaped insulator (3) and adjoins the rod-shaped insulator (3) and adjoins the sheath (2).

[0186] The present disclosure also includes one of the aforementioned arrangements, wherein the spacer (5, 6a, 6b, 7a, 7b) includes a first ring (6a, 6b) extending along a first closed curve (outside) around the rod-shaped insulator (3) and contacting the rod-shaped insulator (3) and the contact sheath (2).

[0187] The present disclosure also includes one of the aforementioned arrangements, wherein the spacer (5, 6a, 6b, 7a, 7b) includes a first ring (6a, 6b) extending along a first closed curve (outside) around the rod-shaped insulator (3) and adjacent to the outer surface of the rod-shaped insulator (3) and adjacent to the inner surface of the sheath (2).

[0188] In addition, the present disclosure includes one of the aforementioned arrangements, wherein the spacer (5, 6a, 6b, 7a, 7b) includes a first ring (6a, 6b) that extends along a first closed curve (outside) around the rod-shaped insulator (3) and contacts the outer surface of the rod-shaped insulator (3) and the inner surface of the sheath (2).

[0189] The first closed curve may be a first closed line. The first closed curve may be a first circle and / or a first ellipse.

[0190] Furthermore, the present disclosure relates to one of the aforementioned arrangements having a first ring (6a, 6b), wherein the first ring (6a, 6b) has a first spacing to the first end (4a) and a second spacing to the second end (4b), wherein the first spacing of the first ring (6a, 6b) from the first end (4a) is greater than the second spacing of the first ring (6a, 6b) from the second end (4b).

[0191] Additionally, the present disclosure includes one of the aforementioned arrangements having a first ring (6a, 6b), wherein the first ring (6a, 6b) has a first spacing to the first end (4a) and a second spacing to the second end (4b), wherein the first spacing of the first ring (6a, 6b) from the first end (4a) is longer than the second spacing of the first ring (6a, 6b) from the second end (4b).

[0192] In addition, the present disclosure includes one of the aforementioned arrangements having a first ring (6a, 6b), wherein the first ring (6a, 6b) has a first spacing from a first opening of the sheath (2) and a second spacing from a second opening of the sheath (2), wherein the first spacing of the first ring (6a, 6b) from the first opening of the sheath (2) is greater than the second spacing of the first ring (6a, 6b) from the second opening of the sheath (2).

[0193] Furthermore, the present disclosure includes one of the aforementioned arrangements having a first ring (6a, 6b), wherein the first ring (6a, 6b) has a first spacing from a first opening of the sheath (2) and a second spacing from a second opening of the sheath (2), wherein the first spacing of the first ring (6a, 6b) from the first opening of the sheath (2) is longer than the second spacing of the first ring (6a, 6b) from the second opening of the sheath (2).

[0194] Furthermore, the present disclosure relates to one of the aforementioned arrangements having a surrounding body (5) and a first ring (6a, 6b), wherein the surrounding body (5) comprises a recess and the first ring (6a, 6b) comprises a portion arranged in the recess of the surrounding body (5) and / or extending in the recess of the surrounding body (5).

[0195] Furthermore, the present disclosure comprises one of the aforementioned arrangements comprising a surrounding body (5) and a first ring (6a, 6b), wherein the surrounding body (5) comprises a groove and the first ring (6a, 6b) comprises a (cylindrical symmetrical) part arranged in the groove of the surrounding body (5) and / or extending in the groove of the surrounding body (5).

[0196] The present disclosure also relates to one of the aforementioned arrangements having a surrounding body (5) and a first ring (6a, 6b), wherein the surrounding body (5) comprises a groove and the first ring (6a, 6b) comprises a (cylindrical symmetrical) part arranged in the groove of the surrounding body (5) and / or extending in the groove of the surrounding body (5).

[0197] Furthermore, the present disclosure relates to one of the aforementioned arrangements, wherein the spacer (5, 6a, 6b, 7a, 7b) comprises a second ring (7a, 7b) extending along a second closed curve around the rod-shaped insulator (3) and adjoining the rod-shaped insulator (3) and adjoining the sheath (2), and being different from the first ring (6a, 6b); and

[0198] The second ring (7a, 7b) has a first spacing to the first end (4a) and a second spacing to the second end (4b), wherein the first spacing of the second ring (7a, 7b) from the first end (4a) is smaller than the second spacing of the second ring (7a, 7b) from the second end (4b).

[0199] The present disclosure also includes one of the aforementioned arrangements, wherein the spacer (5, 6a, 6b, 7a, 7b) comprises a second ring (7a, 7b) extending along a second closed curve around the rod-shaped insulator (3) and adjoining the rod-shaped insulator (3) and adjoining the sheath (2), and being different from the first ring (6a, 6b), and

[0200] The second ring (7a, 7b) has a first spacing to the first end (4a) and a second spacing to the second end (4b), wherein the first spacing of the second ring (7a, 7b) from the first end (4a) is smaller than and / or shorter than the second spacing of the second ring (7a, 7b) from the second end (4b).

[0201] The present disclosure also includes one of the aforementioned arrangements, wherein the spacer (5, 6a, 6b, 7a, 7b) includes a second ring (7a, 7b) extending along a second closed curve around the rod-shaped insulator (3) and contacting the rod-shaped insulator (3) and the sheath (2), and is different from the first ring (6a, 6b); and

[0202] The second ring (7a, 7b) has a first spacing to the first end (4a) and a second spacing to the second end (4b), wherein the first spacing of the second ring (7a, 7b) from the first end (4a) is smaller and / or less than and / or shorter than the second spacing of the second ring (7a, 7b) from the second end (4b).

[0203] Furthermore, the present disclosure includes one of the aforementioned arrangements, wherein the spacer (5, 6a, 6b, 7a, 7b) includes a second ring (7a, 7b) extending along a second closed curve around the rod-shaped insulator (3) and abutting against an outer surface of the rod-shaped insulator (3) and an inner surface of the sheath (2), and being different from the first ring (6a, 6b), and

[0204] The second ring (7a, 7b) has a first spacing to the first end (4a) and a second spacing to the second end (4b), wherein the first spacing of the second ring (7a, 7b) from the first end (4a) is smaller and / or less than and / or shorter than the second spacing of the second ring (7a, 7b) from the second end (4b).

[0205] Furthermore, the present disclosure includes one of the aforementioned arrangements, wherein the spacer (5, 6a, 6b, 7a, 7b) includes a second ring (7a, 7b) extending along a second closed curve around the rod-shaped insulator (3) and contacting an outer surface of the rod-shaped insulator (3) and an inner surface of the sheath (2), and is different from the first ring (6a, 6b); and

[0206] The second ring (7a, 7b) has a first spacing to the first end (4a) and a second spacing to the second end (4b), wherein the first spacing of the second ring (7a, 7b) from the first end (4a) is smaller and / or less than and / or shorter than the second spacing of the second ring (7a, 7b) from the second end (4b).

[0207] The second curve is different from the first closed curve. The second closed curve may be a second closed line. The second closed curve may be a second circle and / or a second ellipse.

[0208] Furthermore, the present disclosure relates to a combustion device comprising a combustion chamber and a structure selected from the group consisting of: an exhaust gas chimney,

[0209] - Flue gas chimney,

[0210] - chimney;

[0211] wherein the structure is in fluid communication with the combustion chamber;

[0212] wherein the combustion device comprises one of the aforementioned arrangements; and

[0213] Wherein at least one portion (10b) of the arrangement is arranged within the structure.

[0214] Furthermore, the disclosure relates to one of the aforementioned combustion devices, wherein the structure comprises an outer wall (9) and the jacket (2) of the arrangement is guided through the outer wall (9) in such a way that at least a portion (10b) of the arrangement protrudes into the structure.

[0215] Furthermore, the present disclosure comprises one of the aforementioned combustion devices having an outer wall (9), wherein the arrangement forms and / or is a feed-through through the outer wall (9).

[0216] Furthermore, the present disclosure includes one of the aforementioned combustion devices having an outer wall (9), wherein the outer wall (9) and the jacket (2) of the arrangement each have a relative humidity of 10·10 at 293 Kelvin. -6 / Kelvin and 20·10 -6 / Kelvin coefficient of thermal expansion α.

[0217] The present disclosure also includes one of the aforementioned combustion devices having an outer wall (9), wherein the outer wall (9) and the jacket (2) of the arrangement each have a temperature range of 10·10°C in the range between 273 Kelvin and 873 Kelvin, in particular in the range between 273 Kelvin and 673 Kelvin, particularly preferably in the temperature range between 273 Kelvin and 473 Kelvin. -6 Kelvin and 20.10 -6 The coefficient of thermal expansion α in Kelvin.

[0218] The above relates to various embodiments of the present disclosure. Various changes may be made to the embodiments without departing from the basic idea and without abandoning the scope of the present disclosure. The subject matter of the present disclosure is defined by its claims. The most diverse changes may be made without abandoning the scope of protection of the following claims.

[0219] Reference numerals

[0220] 1a, 1b, 1c: Power cord

[0221] 2: Sheath

[0222] 3: Rod-shaped insulator

[0223] 4a, 4b: End

[0224] 5: Surrounding body

[0225] 6a, 6b: Ring

[0226] 7a, 7b: Ring

[0227] 8a, 8b: Ring

[0228] 9: wall

[0229] 10a, 10b: Partial

Claims

1. An arrangement comprising at least one first conductive power line (1a, 1b, 1c), a sheath (2) and a rod-shaped insulator (3); in The sheath (2) has a first end (4a) and a second end (4b), and the first end (4a) is different from the second end (4b), and the first end (4a) is opposite to the second end (4b), and the sheath (2) has a first opening at the first end (4a) and a second opening at the second end (4b); wherein at least one first power supply line (1a, 1b, 1c) extends from a first end (4a) to a second end (4b) through the arrangement and defines an axis; wherein the rod-shaped insulator (3) comprises at least one channel passing through the rod-shaped insulator (3), and a first portion of at least one power line (1a, 1b, 1c) extends in the at least one channel passing through the rod-shaped insulator (3); wherein at least one first power line (1a, 1b, 1c) has a first length between the first opening and the second opening; wherein a first portion of at least one power line (1, 1b, 1c) has a second length in at least one passage passing through the rod-shaped insulator (3), and the second length is smaller than the first length; wherein the rod-shaped insulator (3) includes an outer surface radially outward from the axis, and the sheath (2) includes an inner surface outward from the axis, wherein the outer surface of the rod-shaped insulator (3) and the inner surface of the sheath (2) each extend parallel to the axis, so that the outer surface of the rod-shaped insulator (3) and the inner surface of the sheath (2) are opposite to each other; and The arrangement comprises a gap having a size and arranged between an outer surface of the rod-shaped insulator (3) and an inner surface of the sheath (2), and comprises a spacer (5, 6a, 6b, 7a, 7b) so as to provide a spacing between the rod-shaped insulator (3) and the sheath (2), wherein the spacer (5, 6a, 6b, 7a, 7b) defines the size of the gap.

2. The arrangement according to claim 1, The spacers (5, 6a, 6b, 7a, 7b) are designed to provide a gap between the outer surface of the rod-shaped insulator (3) and the inner surface of the sheath (2), and define the size of the gap.

3. The arrangement according to any one of claims 1 to 2, At least one first power supply line (1a, 1b, 1c) extends from a first end (4a) through the arrangement in a straight line to a second end (4b) and defines an axis.

4. The arrangement according to any one of claims 1 to 3, wherein the spacer (5, 6a, 6b, 7a, 7b) includes a surrounding body (5), and The surrounding body (5) comprises at least one first portion extending perpendicularly to the axis and adjacent to the rod-shaped insulator (3), and at least one second portion extending parallel to the axis and adjacent to the sheath (2).

5. The arrangement according to claim 4, The surrounding body (5) comprises at least one channel, and a second portion of at least one power line (1a, 1b, 1c) extends through the surrounding body (5) in the at least one channel.

6. Arrangement according to any one of claims 4 to 5, The surrounding body (5) can be inserted onto the rod-shaped insulator (3) in the axial direction from the axis outwards.

7. Arrangement according to any one of claims 4 to 6, The surrounding body (5) can be inserted into the jacket (2) in the axial direction from the axis outwards.

8. Arrangement according to any one of claims 4 to 7, The surrounding body (5) has a first distance to the first end (4a) and a second distance to the second end (4b), wherein the first distance between the surrounding body (5) and the first end (4a) is greater than the second distance between the surrounding body (5) and the second end (4b).

9. The arrangement according to any one of claims 4 to 8, The rod-shaped insulator (3) and the surrounding body (5) are each an electrical insulator and each have a resistivity p of at least 1 megohm·cm at a temperature of 393 Kelvin.

10. The arrangement according to any one of claims 1 to 9, The spacer (5, 6a, 6b, 7a, 7b) comprises a first ring (6a, 6b) which extends along a first closed curve around the rod-shaped insulator (3) and adjoins the rod-shaped insulator (3) and adjoins the sheath (2).

11. The arrangement according to claim 10, The first ring (6a, 6b) has a first distance from the first end (4a) and a second distance from the second end (4b), wherein the first distance from the first ring (6a, 6b) to the first end (4a) is greater than the second distance from the first ring (6a, 6b) to the second end (4b).

12. The arrangement according to claim 10 and one of claims 4 to 9, The surrounding body (5) comprises a recess, and the first ring (6a, 6b) comprises a portion arranged in the recess of the surrounding body (5) and / or extending in the recess of the surrounding body (5).

13. The arrangement according to any one of claims 1 to 12, wherein the spacer (5, 6a, 6b, 7a, 7b) comprises a second ring (7a, 7b) extending along a second closed curve around the rod-shaped insulator (3) and adjoining the rod-shaped insulator (3) and adjoining the sheath (2), and being different from the first ring (6a, 6b) The second ring (7a, 7b) has a first spacing to the first end (4a) and a second spacing to the second end (4b), wherein the first spacing of the second ring (7a, 7b) from the first end (4a) is smaller than the second spacing of the second ring (7a, 7b) from the second end (4b).

14. A combustion device comprising a combustion chamber and a structure selected from the following - Exhaust chimney, - Flue gas chimney, - chimney; wherein said structure is in fluid communication with said combustion chamber; wherein the combustion device comprises an arrangement according to any one of claims 1 to 13; and Wherein at least one portion (10b) of the arrangement is arranged within the structure.

15. The combustion device according to claim 14, The structure comprises an outer wall (9), and the sheath (2) of the arrangement is guided through the outer wall (9) in such a way that at least one portion (10b) of the arrangement protrudes into the structure.

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