Method for assembling fluid processor device, fluid processor device and electrochemical system having such fluid processor device

Abstract

The invention relates to a method for assembling a fluid treatment device of an electrochemical system, comprising at least one high-temperature fluid component and at least one further high-temperature fluid component, the high-temperature fluid component is indirectly connected to the further high-temperature fluid component by at least one temperature compensation element of the fluid processor device. According to the invention, the at least one high-temperature fluid component and the at least one further high-temperature fluid component are fixed in a clamping device in order to carry out a welding process for connecting the at least one high-temperature fluid component to the at least one further high-temperature fluid component.

Description

Technical Field

[0001] The present invention relates to a method for assembling a fluid processor device, a fluid processor device, and an electrochemical system having such a fluid processor device. Background Technology

[0002] A method has been proposed for assembling a fluid processor device for an electrochemical system, the fluid processor device comprising at least one high-temperature fluid component and at least one additional high-temperature fluid component, wherein, in at least one method step, the high-temperature fluid component and the additional high-temperature fluid component are indirectly connected via at least one temperature compensation element of the fluid processor device.

[0003] In particular, a temperature compensation element for an electrochemical system is known from DE 10 2021 210832 A1 for connecting two high-temperature fluid components. Summary of the Invention

[0004] The present invention relates to a method for assembling a fluid processor device for an electrochemical system, the fluid processor device comprising at least one high-temperature fluid component and at least one additional high-temperature fluid component, wherein, in at least one method step, the high-temperature fluid component and the additional high-temperature fluid component are indirectly connected via at least one temperature compensation element of the fluid processor device.

[0005] A method is proposed in which at least one high-temperature fluid component and at least one additional high-temperature fluid component are fixed in a clamping device to perform a welding process connecting the at least one high-temperature fluid component and the at least one additional high-temperature fluid component. The electrochemical system preferably includes at least one electrochemical unit configured to electrochemically convert the reactants of at least one fluid into the products of at least one fluid. The electrochemical unit, for example, includes at least one fuel cell and / or at least one electrolysis cell to perform the electrochemical conversion. A fluid processor device is preferably configured to process at least one reactant and / or at least one product. For example, the fluid processor device is configured to supply at least one reactant of the electrochemical unit, particularly by pressure loading; pretreat, particularly preheat, filter, and / or reform, at least one reactant; dispense at least one reactant; post-treat, particularly cool, filter, and / or oxidize the remaining amount of reactant; and / or remove at least one product. The fluid processor device is preferably designed for the electrochemical unit, which has a typical operating temperature greater than 200°C, preferably greater than 400°C, and particularly greater than 600°C. For example, the electrochemical unit includes at least one solid oxide fuel cell and / or solid oxide electrolysis cell or at least one molten carbonate fuel cell and / or molten carbonate electrolysis cell. The method can also be applied without problems to fluid processing equipment designed for lower operating temperatures. The high-temperature fluid components of the fluid processing equipment are preferably designed for operating temperatures of at least 200°C, in some cases greater than 400°C, and particularly up to 700°C. Examples of high-temperature fluid components include reformers, reburners, getter units (particularly having getter material for separating chromium from at least one product and / or reactant), fluid lines, fluid distributors, heat exchangers, and / or the like. The fluid processing equipment can include at least one cryogenic fluid component, particularly a compressor, blower, and / or valve, having a typical operating temperature below 200°C, and the cryogenic fluid component is decoupled from other high-temperature fluid components, particularly via at least one heat exchanger. Specifically, the fluid processor device includes at least one product-reactant-heat exchanger configured to transfer heat from the product to the reactants. Preferably, all other high-temperature fluid components of the fluid processor device are arranged downstream of at least one product-reactant-heat exchanger with respect to the reactants, and / or upstream of at least one product-reactant-heat exchanger with respect to the products.

[0006] At least one temperature compensation element is provided to accommodate thermomechanical stresses that may occur between at least two high-temperature fluid components in a high-temperature fluid assembly, particularly when the fluid processor device and / or electrochemical unit starts operation, is shut down, and / or its operating point changes. Preferably, at least one high-temperature fluid component and at least one additional high-temperature fluid component are connected to each other via the temperature compensation element after a welding process, wherein the high-temperature fluid components are arranged spaced apart from each other. Preferably, at least one temperature compensation element is welded to one of the high-temperature fluid components in a welding process, and to another high-temperature fluid component in at least one additional welding process, thereby indirectly connecting these high-temperature fluid components to each other. The additional welding process can be carried out together with the welding process in a clamping device, or in a pre-assembly range, particularly before the temperature compensation element for performing the welding process is arranged in the clamping device. The clamping device is used such that the high-temperature fluid components and at least one temperature compensation element are preferably arranged relative to each other in a set end position, and at least for the duration of the welding process, the arrangement is fixed. The fluid processor device, in its assembled state, preferably has a mass of at least 200 kg and particularly less than 2000 kg. The smallest imaginary cuboid that just completely surrounds the fluid processor device preferably comprises at least 0.4 m. 3 And especially less than 100 m 3 The clamping device is preferably configured to receive at least a majority of the weight of the fluid processor device. The clamping device preferably includes a frame at which the high-temperature fluid assembly of the fluid processor device is fixed in a positioned end location. Preferably, the clamping device includes a movably supported fixing element, which is used to set the positioned end location of the high-temperature fluid assembly.

[0007] Preferred high-temperature fluid components and additional high-temperature fluid components are movably supported relative to each other at a clamping device prior to the welding process. Specifically, the additional high-temperature fluid component includes at least one axial degree of freedom, oriented at least substantially parallel to the flow direction of the additional high-temperature fluid component. For example, the pipe end of the additional high-temperature fluid component opposite to the temperature compensation element is configured as a plug connector with a variable insertion depth. The plug connector is, for example, a pipe end, particularly configured as a fitting, for insertion into another component or pipe of the fluid processing device, or configured as a recess, particularly a sleeve, for receiving pipe ends, fittings, connectors, or the like of the fluid processing device. Prior to the welding process, the position of the plug connector along its axial degree of freedom, particularly the insertion depth, is configured such that the high-temperature components are in physical contact with the temperature compensation element, and where the mechanical stress at the temperature compensation element is as low as possible.

[0008] "Setting up" should be understood in particular as specifically programmed, designed and / or equipped. "Object setting for a defined function" should be understood in particular as the object satisfying and / or implementing this defined function in at least one use state and / or operating state.

[0009] The design scheme according to the invention allows for the advantageous low-stress welding of at least one temperature compensation element. Furthermore, the pre-stress present, particularly at room temperature, in the temperature compensation element can be advantageously kept small before the fluid processor equipment begins operation. In particular, manufacturing tolerances of the high-temperature fluid components and / or at least one temperature compensation element can be advantageously and accurately compensated.

[0010] Furthermore, it is proposed that at least one high-temperature fluid component and at least one additional high-temperature fluid component are connected to each other in at least one assembly orientation of the fluid processor device, said assembly orientation being deviated from the operational orientation of the fluid processor device. Preferably, the clamping device is part of a positioner, such as an L-shaped positioner, having at least one, preferably at least two, and especially three rotational degrees of freedom. The fluid processor device preferably includes a longitudinal axis configured for orientation at least substantially parallel to a vertical line for the operation of the fluid processor device. "Substantially parallel" should be understood here specifically as an orientation relative to a reference direction, particularly in a plane, wherein said direction has a deviation of particularly less than 8°, advantageously less than 5°, and particularly advantageously less than 2° relative to said reference direction. The expression "substantially perpendicular" should be defined here specifically as an orientation relative to a reference direction, wherein said direction and said reference direction, particularly when viewed in a projection plane, form an angle of 90°, and said angle has a maximum deviation of particularly less than 8°, advantageously less than 5°, and particularly advantageously less than 2°. To prepare for the welding process, and / or during the welding process, the fluid processor device is preferably rotated by a positioner into at least one assembly orientation in which the longitudinal axis deviates from the vertical by an angle greater than 10°. The assembly orientation depends, for example, on the relative arrangement of the high-temperature fluid components to be connected with each other, the accessibility of the high-temperature fluid components to be connected, and / or the welding position of the welding process. The prestress of at least one temperature compensation element can be kept particularly small by the design according to the invention.

[0011] Furthermore, it is proposed that welding processes be performed in welding positions PA and / or PB according to DIN EN ISO 6947, and especially in welding positions 1FR and / or 2F according to ASME Chapter IX. The main fluid flow direction of at least one high-temperature fluid component is preferably oriented at least substantially parallel to the longitudinal axis. The main fluid flow direction of at least one high-temperature fluid component preferably extends at least substantially perpendicular to the joint surface of at least one other high-temperature fluid component facing at least one high-temperature fluid component, and / or at least substantially parallel to the main fluid flow direction of the joint of the other high-temperature fluid component. To perform the welding process in welding position PA, the fluid processor device is rotated by a positioner at a longitudinal axis tilted, for example, greater than 30°, especially between 40° and 50°, and preferably about the main fluid flow direction. When welding multiple high-temperature fluid components to each other, the method includes multiple welding processes, which are performed sequentially or in parallel in the clamping device. Preferably, at least a majority of the welding processes are performed in welding position PA, especially welding position 1FR. Before each welding process, the positioner can be reoriented if necessary. The positioner's control unit preferably processes a pre-given list of determined assembly orientations, which is synchronized, in particular, with an automated welder performing the welding process, and / or subsequent inputs to the list can be manually triggered by a manual welding machine. To perform the welding process in welding position PB, the fluid processor device is oriented by the positioner with its longitudinal axis at least substantially parallel to the vertical line. The design according to the invention allows for advantageously minimizing heat input during the welding process.

[0012] Furthermore, it is proposed that, in the pre-assembly component step of the method, at least one temperature compensation element is pre-assembled on the high-temperature fluid assembly or another high-temperature fluid assembly. Preferably, the temperature compensation element is connected to the high-temperature fluid assembly or another high-temperature fluid assembly to form a pre-assembly component. The pre-assembly component is preferably arranged integrally in the clamping device. Preferably, at least one temperature compensation element and the high-temperature fluid assembly contained in the pre-assembly component are fixed to each other in the pre-assembly component step, particularly rigidly connected to each other. With the design according to the invention, the relative positioning of the high-temperature fluid assembly and at least one temperature compensation element in the clamping device can be advantageously, easily, and reliably performed.

[0013] Furthermore, it is proposed that, in the pre-assembly component step of the method, at least one temperature compensation element is welded to a high-temperature fluid assembly or another high-temperature fluid assembly. Preferably, the pre-assembly component step includes the additional welding process already mentioned. Preferably, the sealing performance of the pre-assembly component is tested before positioning it in the clamping device. With the design according to the invention, the number of assembly orientations to be occupied by the positioner can be advantageously kept small. Furthermore, fault finding in the event of a manufacturing defect in the fluid processor equipment can be advantageously kept to a minimum.

[0014] Furthermore, it is proposed that at least one reburner, at least one reformer, and / or at least one getter unit be connected as a high-temperature fluid assembly to at least one fluid guiding unit and / or at least one heat exchanger as another high-temperature fluid assembly. In the construction scheme of the electrochemical system as a fuel single-cell system, the electrochemical unit is preferably configured to electrochemically convert fuel (especially natural gas and / or biogas) and oxygen-containing fluid (especially ambient air), said fuel being, for example, capable of including hydrogen, at least one hydrocarbon, especially methane, and / or ammonia as the primary energy carrier. The gas processing device for the fuel single-cell system preferably includes at least one reformer for reforming the fuel, a reburner for catalytic conversion and / or thermal conversion of fuel residues in the exhaust gas produced by the electrochemical unit, an exhaust gas-fuel-heat exchanger for transferring heat from the exhaust gas to the unconverted fuel, and / or an exhaust gas-oxygen-heat exchanger for transferring heat from the exhaust gas to the unconverted oxygen-containing fluid. Preferably, in at least one step of the method, a temperature compensation element is welded to the exhaust gas inlet of the reburner and the exhaust gas outlet of the fluid guiding unit. The exhaust outlet of the reburner is preferably welded to the primary side of the exhaust-fuel-heat exchanger, particularly directly or indirectly, for example, through at least one piping element. Preferably, in at least one step of the method, the temperature compensation element is welded to the fuel outlet of the reformer and the fuel inlet of the fluid guiding unit. Preferably, the fuel inlet of the reformer is welded directly or indirectly, for example, through at least one piping element to the secondary side of the exhaust-fuel-heat exchanger. Preferably, in at least one step of the method, the temperature compensation element is welded to the oxygen outlet of the getter unit and the oxygen inlet of the fluid guiding unit. Preferably, the oxygen inlet of the getter unit is welded to the secondary side of the exhaust-air-heat exchanger, particularly directly or indirectly, for example, through at least one piping element. With the design according to the invention, mechanical prestress and total stress can be advantageously kept low within the fluid processing device for a fuel single-pool system at operating temperatures, and the fluid processing device can be designed particularly advantageously in a compact manner.

[0015] Furthermore, it is proposed that a diaphragm-like temperature compensation element be used in at least one step of the method. The diaphragm-like temperature compensation element preferably has a central channel configured to allow process fluids of the electrochemical system to pass through, particularly at least one product and / or at least one reactant. The diaphragm-like temperature compensation element is preferably constructed rotationally symmetrical about the central axis of the central channel. The central axis of the central channel is preferably oriented and welded to the high-temperature component at least substantially parallel to the longitudinal axis of the fluid processor device. The main extension plane of the diaphragm-like temperature compensation element preferably extends at least substantially perpendicular to the central axis of the central channel. The “main extension plane” of the construction unit should be understood in particular as a plane parallel to the largest side face of the smallest imaginary cuboid that just completely surrounds the construction unit, and particularly extends through the center point of the cuboid. In particular, the maximum axial extension of the diaphragm-like temperature compensation element parallel to the central axis is less than, particularly at least in multiples of 0.66, and preferably at least in multiples of 0.5, the maximum lateral extension of the diaphragm-like temperature compensation element perpendicular to the central axis, particularly the diameter. A diaphragm-shaped temperature compensation element is preferably used to connect a high-temperature component configured as a reburner or reformer to another high-temperature component. The diaphragm-shaped temperature compensation element is preferably made of metal, particularly stainless steel. Preferably, the diaphragm-shaped temperature compensation element, and especially the entire pre-assembled component having the diaphragm-shaped temperature compensation element, is oriented relative to the high-temperature fluid component along at least one lateral degree of freedom, particularly along two lateral degrees of freedom, prior to the welding process, in order to minimize mechanical stress in the temperature compensation element. At least one lateral degree of freedom is preferably at least substantially perpendicular to the axial degree of freedom, particularly the longitudinal axis. The fluid processor device can be advantageously and compactly maintained by the design according to the invention.

[0016] Furthermore, it is proposed that a temperature compensation element with an integrated metal bellows be used in at least one method step. The temperature compensation element preferably has a central channel configured to allow process fluids from the electrochemical system to pass through, particularly at least one product and / or at least one reactant. The diaphragm-like temperature compensation element is preferably constructed rotationally symmetrically about the central axis of the central channel. The central axis of the central channel is preferably welded to the high-temperature component at least substantially parallel to the longitudinal axis of the fluid processor device. The maximum axial extension of the temperature compensation element parallel to the central axis can be greater than, equal to, or less than the maximum lateral extension of the temperature compensation element perpendicular to the central axis, particularly its diameter. Preferably, the central channel gradually tapers along the central axis, wherein the fluid inlet of the central channel is preferably larger than the fluid outlet of the central channel. The metal bellows is preferably integrally constructed with the temperature compensation element. In particular, the metal bellows constitutes a section of the central channel. Preferably, the temperature compensation element, including the metal bellows, is made of metal, such as stainless steel. In a design with a central channel having gradually tapering sections, the metal bellows is preferably integrated downstream of the tapering section and / or integrated within the tapering section. Preferably, the temperature compensation element with the integrated metal bellows is welded to the high-temperature component configured as a getter unit. The design according to the invention advantageously provides a long compensation path for the thermal expansion of the high-temperature component connected to the temperature compensation element.

[0017] Furthermore, a fluid processor device for an electrochemical system is proposed, the fluid processor device having at least one high-temperature fluid component, at least one additional high-temperature fluid component, and at least one temperature compensation element disposed between the at least one high-temperature fluid component and the at least one additional high-temperature fluid component, the at least one high-temperature fluid component, the at least one additional high-temperature fluid component, and the at least one temperature compensation element being connected to each other according to the method of the invention. The design according to the invention provides an advantageously compact fluid processor device, and in particular, it is advantageously possible to assemble the fluid processor device cost-effectively and reliably.

[0018] Furthermore, an electrochemical system is proposed, which has at least one fluid processor device according to the invention and at least one electrochemical unit connected to the fluid processor device. The electrochemical system can be configured as a fuel monocell system, an electrolysis system, or a hybrid system having both a fuel monocell configuration and an electrolysis configuration. The electrochemical unit includes at least one electrochemical monocell. Preferably, the electrochemical unit includes a plurality, particularly at least 100, preferably at least 200 electrochemical monocells, which are preferably connected in series and electrically connected in parallel for fluid technology purposes. At least one electrochemical monocell is preferably configured as a solid oxide fuel monocell and / or a solid oxide electrolysis monocell, or as a molten carbonate fuel monocell and / or a molten carbonate electrolysis monocell. Alternatively, the electrochemical unit includes at least one alkaline fuel monocell and / or at least one alkaline electrolysis monocell, at least one polymer electrolyte fuel monocell and / or at least one polymer electrolysis monocell and / or at least one other electrochemical monocell with a structure that is meaningful to those skilled in the art. The design scheme according to the present invention can provide an advantageously compact electrochemical system, and in particular, it can be assembled advantageously at low cost and with high reliability.

[0019] The methods, fluid processor devices, and / or electrochemical systems according to the present invention should not be limited to the usage and implementation methods described above. In particular, the methods, fluid processor devices, and / or electrochemical systems according to the present invention may have a different number of elements, components, units, and method steps than those mentioned herein in order to satisfy the functional modes described herein. Furthermore, values ​​within the limits specified in this disclosure should also be considered disclosed and freely usable. Attached Figure Description

[0020] Further advantages are illustrated in the following figures, which depict embodiments of the invention. The figures, description, and claims encompass a large number of combined features. Those skilled in the art will also readily consider these features individually and combine them into other meaningful combinations.

[0021] Figure 1 A schematic diagram of the fluid processor device according to the invention in its assembled state is shown. Figure 2 A schematic exploded view of the fluid processor device according to the present invention is shown. Figure 3 A schematic diagram of a temperature compensation element of a fluid processor device according to the invention, having an integrated metal bellows, is shown. Figure 4A schematic diagram of a diaphragm-shaped temperature compensation element in a fluid processor device according to the present invention is shown. Figure 5 A schematic diagram of the arrangement of the fluid processor device according to the invention in clamping is shown during the process of assembling the fluid processor device according to the invention using the method according to the invention. Figure 6 A schematic diagram of the welding process in accordance with the method of the present invention is shown. Detailed Implementation

[0022] Figure 1 The fluid processor device 10 of the electrochemical system is shown in its assembled state. The fluid processor device 10 is exemplary designed here for a fuel monocell system comprising an electrochemical unit (not shown) having at least one fuel monocell for electrochemically converting fuel and oxygen-containing fluid as reactants into exhaust gas as products. The fluid processor device 10 includes multiple high-temperature fluid components 12, 14, 16, 18, 20, 22, 24 for processing fuel and / or oxygen-containing fluid.

[0023] The fluid processor device 10 includes at least one high-temperature fluid component 22 configured as a fluid guiding unit 48. The fluid guiding unit 48 is exemplarily configured here as a distribution plate. The fluid guiding unit 48 is particularly configured to fluidically connect the fluid processor device 10 to an electrochemical unit with respect to fuel, oxygenated fluids, and / or exhaust gases. Particularly preferred is the fluid guiding unit 48 configured as a mounting plate for securing the electrochemical unit to the fluid processor device 10, and particularly for supporting the electrochemical unit. The fluid processor device 10 preferably includes a longitudinal axis 54, which extends at least substantially perpendicular to the main extension direction of the fluid guiding unit 48. The fluid processor device 10 is preferably configured to operate in an operating orientation in which the longitudinal axis 54 is at least substantially parallel to the vertical. Most of the other high-temperature fluid components 12, 14, 16, 18, 20, 24 are preferably arranged about the longitudinal axis 54 on the same side of the fluid guiding unit 48.

[0024] Fluid processor device 10 preferably includes at least one, exemplarily two, high-temperature fluid components 12, 14, configured as reburners 38, 40. Fluid processor device 10 preferably includes at least one, exemplarily exactly one, high-temperature fluid component 16, configured as a reformer 42. Fluid processor device 10 preferably includes at least one, exemplarily two, high-temperature fluid components 18, 20, configured as getter units 44, 46 (see also...). Figure 2Preferably, at least one reburner 38, 40, at least one reformer 42 and / or at least one getter unit 44, 46 is fluidically connected to the fluid guiding unit 48.

[0025] The fluid processing device 10 includes at least one additional high-temperature fluid assembly 24, which includes at least one heat exchanger 50, 52, particularly an exhaust gas-fuel heat exchanger 50 and an exhaust gas-oxygen heat exchanger 52. The exhaust gas-fuel heat exchanger 50 is preferably fluidically coupled to at least one reburner 38, 40 and to at least one reformer 42. The exhaust gas-oxygen heat exchanger 52 is preferably fluidically coupled to at least one getter unit 44, 46. The fluid processing device 10 preferably includes at least one oxygen supply unit 58 for allowing oxygenated fluid to enter. The oxygen supply unit 58 is preferably fluidically coupled to the exhaust gas-oxygen heat exchanger 52. The fluid processing device 10 preferably includes at least one fuel supply unit 56 for allowing fuel to enter. The fuel supply unit 56 is preferably coupled to the exhaust gas-fuel heat exchanger 50.

[0026] The fluid processing device 10 preferably includes at least one exhaust gas duct 60 for removing exhaust gases. The exhaust gas duct 60 is preferably connected to the exhaust gas outlet of the exhaust gas-oxygen-heat exchanger 52. The exhaust gas-oxygen-heat exchanger 52, the exhaust gas-fuel-heat exchanger 50, at least one reburner 38, 40, and the fluid guiding unit 48 are preferably arranged stacked along the longitudinal axis 54, particularly in this order. At least one reformer 42 and / or at least one getter unit 44, 46 are preferably arranged at the same height along the longitudinal axis 54 as at least one reburner 38, 40.

[0027] Figure 2 An exploded view of a portion of the fluid processing device 10 is shown. The fluid processing device 10 includes at least one, particularly one, temperature compensation element 26, 28, 30, 32, 34 arranged between the high-temperature fluid assemblies 12, 14, 16, 18, 20 connected to the fluid guiding unit 48 and the fluid guiding unit 48. The temperature compensation elements 26, 28, 30, 32, 34 are configured to receive thermomechanical stresses, particularly generated at the different operating temperatures of the high-temperature fluid assemblies 12, 14, 16, 18, 20, 22, 24. The temperature compensation elements 26, 28, 30 arranged at at least one reburner 38, 40 or at least one reformer 42 are preferably configured as diaphragm-shaped temperature compensation elements 26, 28, 30. Figure 4 Enlarged views of these temperature compensation elements 26, 28, and 30 are shown. At least one temperature compensation element 32, 34, arranged at at least one getter unit 44, 46, preferably has a metal bellows. Figure 3 Enlarged views of these temperature compensation elements 32 and 34 are shown in the figure.

[0028] Figure 5 A fluid processor device 10 is shown during a method for assembling a fluid processor device 10. In at least one step of the method, high-temperature fluid assemblies 12, 14, 16, 18, 20 are indirectly connected to a fluid guiding unit 48 via at least one temperature compensation element 26, 28, 30, 32, 34 of the fluid processor device 10. The high-temperature fluid assemblies 12, 14, 16, 18, 20, 22, 24 are secured in a clamping device 36 to perform a welding process connecting at least one high-temperature fluid assembly 12, 14, 16, 18, 20 and at least one additional high-temperature fluid assembly 22, 24 within the scope of the method. The clamping device 36 is preferably a positioner 68. The positioner 68 is preferably configured to rotate the fluid processor device 10. The positioner 68 is particularly configured to tilt the longitudinal axis 54 of the fluid processor device 10. The positioner 68 is particularly configured to rotate the fluid processor device 10 about the longitudinal axis 54 of the fluid processor device 10. Positioner 68 is exemplarily configured as an L-shaped positioner. Positioner 68 preferably includes a base frame 70, a particularly L-shaped support arm 72 rotatably supported on the base frame 70, and a rotary feeder 74 rotatably supported on the support arm 72. Clamping device 36 is fixed to the rotary feeder 74. High-temperature fluid components 12, 14, 16, 18, 20, 22, 24 are preferably fixed to clamping device 36, and are preferably held in a set end position relative to each other by clamping device 36, and are connected to each other by welding process material locking.

[0029] Prior to the welding process, the high-temperature fluid components 12, 14, 16, 18, 20, 22, and 24 are arranged relative to each other within the clamping device 36. Preferably, at least one reburner 38, 40, at least one reformer 46, and / or at least one getter unit 44, 46 has at least one axial degree of freedom 78 (see [link]). Figure 2 The axial degree of freedom 78 is preferably at least substantially parallel to the longitudinal axis 54. Preferably, at least one reburner 38, 40, at least one reformer 46, and / or at least one getter unit 44, 46 are arranged relative to the fluid guiding unit 48 along the axial degree of freedom 78 such that mechanical stress in the associated temperature compensation elements 26, 28, 30, 32, 34 is minimized. Preferably, the ends 82 of at least one reburner 38, 40, at least one reformer 46, and / or at least one getter unit 44, 46 that are opposite to the temperature compensation elements 26, 28, 30, 32, 34 (see [link to relevant documentation]). Figure 2The components are inserted into a recess 84, in particular, of the high-temperature fluid assembly 24 including heat exchangers 50 and 52, wherein the mechanical stress in the temperature compensation elements 26, 28, 30, 32, and 34 is set by the respective insertion depth of at least one reburner 38 and 40, at least one reformer 46, and / or at least one getter unit 44 and 46.

[0030] Preferably, prior to the welding process, the relative positions of the fluid guiding unit 48 and at least one reburner 38, 40 and / or at least one reformer 46 are adapted with respect to the lateral degree of freedom 80 (see [reference]). Figure 2 Lateral degree of freedom 80 preferably extends perpendicular to axial degree of freedom 78. Lateral degree of freedom 80 is provided by diaphragm-like temperature compensation elements 26, 28, 30, which, depending on the manufacturing tolerances of the fluid processor device 10, can be concentrically or eccentrically arranged at the corresponding fluid outlet and / or fluid inlet of the fluid guiding unit 48. Preferably, the support surface of the diaphragm-like temperature compensation elements 26, 28, 30 for arrangement at the fluid guiding unit 48 is greater than or equal to the expected manufacturing tolerances of the fluid processor device 10, especially including the expected assembly tolerances.

[0031] Exemplary in Figure 6 The welding process is illustrated. The welding process is preferably performed by an automated welding device 76, exemplarily here by a welder arranged at a robotic arm. At least one high-temperature fluid component 12, 14, 16, 18, 20 and a fluid guiding unit 48 are connected to each other in at least one assembly orientation of the fluid processor device 10, said assembly orientation being offset from the operating orientation of the fluid processor device 10. Preferably, a positioner 68 is oriented to the fluid processor device 10 such that the welding process can be performed in welding positions PA and / or PB according to DIN EN ISO 6947, and particularly in welding positions 1FR and / or 2F according to ASME Chapter IX. Figure 6 In this configuration, the longitudinal axis 54 is exemplarily inclined at approximately 40° relative to the vertical line in order to weld the temperature compensation element 28, which is arranged at at least one reburner 40, to the fluid guiding unit 48, preferably in welding position PA according to DIN EN ISO 6947, and particularly in welding position 1FR according to ASME Chapter IX.

[0032] At least one temperature compensation element 26, 28, 30, 32, 34 is pre-assembled, particularly preferably welded, in the pre-assembly component step of the method in the high-temperature fluid assemblies 12, 14, 16, 18, 20.

Claims

1. A method for assembling a fluid processor device (10) for an electrochemical system, said fluid processor device comprising at least one high-temperature fluid component (12, 14, 16, 18, 20) and at least one additional high-temperature fluid component (22, 24), wherein, In at least one method step, the high-temperature fluid assembly (12, 14, 16, 18, 20) and the other high-temperature fluid assembly (22, 24) are indirectly connected via at least one temperature compensation element (26, 28, 30, 32, 34) of the fluid processor device (10), characterized in that the at least one high-temperature fluid assembly (12, 14, 16, 18, 20) and the at least one other high-temperature fluid assembly (22, 24) are fixed in a clamping device (36) to perform a welding process connecting the at least one high-temperature fluid assembly (12, 14, 16, 18, 20) and the at least one other high-temperature fluid assembly (22, 24).

2. The method according to any one of the preceding claims, characterized in that, The at least one high-temperature fluid component (12, 14, 16, 18, 20) and the at least one additional high-temperature fluid component (22, 24) are connected to each other in at least one assembly orientation of the fluid processor device (10), the assembly orientation being deviated from the operating orientation of the fluid processor device (10).

3. The method according to any one of the preceding claims, characterized in that, The welding process shall be performed in welding positions PA and / or PB in accordance with DIN EN ISO 6947, and especially in welding positions 1FR and / or 2F in accordance with ASME Chapter IX.

4. The method according to any one of the preceding claims, characterized in that, In the pre-assembly step, at least one temperature compensation element (26, 28, 30, 32, 34) is pre-assembled at the high-temperature fluid assembly (12, 14, 16, 18, 20) or the other high-temperature fluid assembly (22, 24).

5. The method according to claim 4, characterized in that, In the pre-assembly step, at least one temperature compensation element (26, 28, 30, 32, 34) is welded to the high-temperature fluid assembly (12, 14, 16, 18, 20) or the other high-temperature fluid assembly (22, 24).

6. The method according to any one of the preceding claims, characterized in that, At least one reburner (38, 40), at least one reformer (42), and / or at least one getter unit (44, 46) of the high-temperature fluid assembly (12, 14, 16, 18, 20) are connected to at least one fluid guiding unit (48) and / or at least one heat exchanger (50, 52) of another high-temperature fluid assembly (22, 24).

7. The method according to any one of the preceding claims, characterized in that, In at least one method step, a diaphragm-like temperature compensation element (26, 28, 30) is used.

8. The method according to any one of the preceding claims, characterized in that, In at least one method step, a temperature compensation element (32, 34) with an integrated metal bellows is used.

9. A fluid processor device (10) for an electrochemical system, the fluid processor device having at least one high-temperature fluid component (12, 14, 16, 18, 20), at least one additional high-temperature fluid component (22, 24), and at least one temperature compensation element (26, 28, 30, 32, 34) disposed between the at least one high-temperature fluid component and the at least one additional high-temperature fluid component, the at least one high-temperature fluid component and the at least one temperature compensation element being connected to each other in accordance with any of the preceding claims.

10. An electrochemical system having at least one fluid processor device (10) according to claim 9, and having at least one electrochemical unit connected to said fluid processor device (10).

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