METHOD FOR ASSEMBLING A COMPONENT WITH MEASURING PROTECTIONS AND USE OF A COMPONENT FOR ASSEMBLING MEASURING PROTECTIONS

Abstract

Method for mounting at least one assembly (10) comprising at least one measuring port (12, 14) for passing an exhaust gas probe and a saddle plate (16) having at least one through-opening (18), wherein the measuring port (12, 14) is attached to the saddle plate (16) at the edge of one of the through-openings (18), on an exhaust pipe (48) of an emergency power supply system comprising an internal combustion engine, wherein the emergency power supply system is kept ready for operation during the execution of the mounting steps, and wherein the method (100) comprises at least the following steps: Producing (106) at least one measuring opening (22) on the exhaust pipe (48); and attaching (108) the saddle plate (16) of each assembly (10) over each measuring opening (22) without welding.

Description

[0001] The invention relates to a method for assembling a component with measuring nozzles and the use of a component for assembling measuring nozzles.

[0002] To safeguard against power grid outages, emergency power systems can be used, for example, in the form of generators driven by internal combustion engines, particularly diesel-powered combustion engines. Reciprocating internal combustion engines are the most commonly used combustion engines for these systems. Emergency power systems of this type can be used, for example, in public buildings, event venues and hotels, infrastructure and critical infrastructure, emergency services, industrial plants and IT applications, such as data centers, or even in residential buildings. Systems with an internal combustion engine whose thermal output exceeds 1 MW are particularly relevant to this invention. To limit emissions into the air from certain pollutants emitted by internal combustion engines, emission limits must be observed.To determine whether these limit values ​​are being met, measurements must be carried out in accordance with legal requirements. To perform measurements according to these requirements, existing emergency power systems often require the subsequent installation of measuring ports in the exhaust pipes for connecting the measuring equipment.

[0003] It is known to weld measuring nozzles into existing exhaust pipes of internal combustion engines on site. The exhaust systems of the affected emergency power generators typically have diameters between 200 mm and 600 mm. Operators of emergency power generators generally require that these systems remain operational during installation work. This means that the welding work must be carried out on the exhaust pipe of an operational emergency power generator, such as an internal combustion engine. However, this has the disadvantage that the welding currents generated during the welding work can cause malfunctions or even defects in the systems that are kept in operation.

[0004] DE 80 31 556 U1 describes a holding device for measuring instruments used for emission control measurement, for mounting on an exhaust pipe. The holding device has a base plate with a movable stabilizing guide that can be clamped in any position and accommodates the measuring instruments.

[0005] JP 5 812 544 B2 describes an injector mounting clamp for connecting an injector of an exhaust treatment system to an exhaust pipe of an engine while holding the exhaust pipe in a mounting position.

[0006] US 6,676,168 B2 describes a hollow fitting that is secured with a pressure-tight seal in a hole located in the curved wall of a vessel. A body tube portion of a hollow fitting is inserted through the hole from a concave side of the vessel wall. A force-distributing washer is placed over the free end of the body tube portion so that a concave side of the washer faces the hole and a flat side of the washer faces away from the hole. A pressure flange is screwed onto the free end of the body tube portion. Pressure screws are screwed into the threaded openings of the pressure flange and brought into contact with the flat side of the washer, so that when the pressure screws are tightened, a flange portion of the hollow fitting presses a sealing ring against the concave side of the vessel wall to form a pressure-tight seal around the hole.A hollow connecting element with an external thread is attached to an internal thread of the body tube section.

[0007] US 1 049 283 A describes a branch pipe connection that rigidly joins a main pipe with a circular opening and a branch pipe with an A-head.

[0008] US 1 689 575 A describes a device for connecting a pipe to a tank or boiler, which creates a tight and secure connection with the curved side wall of a boiler.

[0009] DE 20 2011 004 618 U1 describes a heat shield for shielding hot areas, for example of an internal combustion engine, with at least one metallic shielding layer having at least one first through-opening for the passage of a component, and a disc-shaped sealing element that covers at least the first through-opening in some areas, wherein the sealing element has at least one metallic layer which has a second through-opening for the passage of the component in the area of ​​the first through-opening and which projects radially beyond the edge of the first through-opening in some areas and has at least one fastening through-opening in the projection, and a sealing unit which contains or consists of a temperature-resistant flexible fiber material.

[0010] The object of the invention is to provide a method for improving the safety during the installation of measuring nozzles on the exhaust pipes.

[0011] The problem is solved by the features of the independent claims. Advantageous further developments are the subject of the dependent claims and the following description.

[0012] The invention is based on an assembly for mounting measuring nozzles to an exhaust pipe of an emergency power supply system comprising an internal combustion engine, wherein the assembly has at least one measuring nozzle for passing an exhaust gas probe and a saddle plate with at least one through-opening, and wherein one of the measuring nozzles is attached to the saddle plate in the edge region of one of the through-openings, wherein the saddle plate is designed for welding-free attachment to the exhaust pipe above a measuring opening of the exhaust pipe.

[0013] In this assembly, measuring ports are pre-mounted on the saddle plate, which can be attached to the exhaust pipe over the measuring port without welding. This pre-assembly allows for rapid delivery with consistent quality when required, reducing the workload at the installation site on the exhaust pipe of the internal combustion engine. The measuring ports can be closable and are connected to the through-hole of the saddle plate. Once the saddle plate is attached over the measuring port, the through-hole connects to the measuring port. This means that after the saddle plate is attached, the measuring ports are connected to the measuring port, allowing sensors such as exhaust gas probes to be inserted into the exhaust pipe via the measuring ports.In particular, it is intended that the mounting of the saddle plate on an operational emergency power supply system can be carried out.

[0014] Measuring probes or similar devices can be inserted into the exhaust pipe via the measuring ports, the through-hole, and the measuring opening, for example, to perform exhaust gas measurements. The saddle plate is attached without welding, thus avoiding any damage to the emergency power system, the internal combustion engine, and especially the electronic components of the emergency power system that could be caused by welding. Firstly, no fire watches are required at the installation sites, which reduces installation costs. Secondly, the electronic components of operational emergency power systems must be powered, and stray welding currents can damage these components. Therefore, the welding-free attachment specifically prevents damage to the electronic components of the internal combustion engine caused by stray welding currents.Welding on exhaust pipes or other stainless steel components typically requires weld preparation, a process to protect the portion of the weld facing away from the welding electrode from oxidation and scaling. During preparation, the highly heated weld root and edge areas are surrounded by a shielding gas to displace the atmospheric atmosphere. A weld-free connection between the saddle plate and the exhaust pipe eliminates the need for this preparation step.

[0015] For example, the saddle plate can be designed for attachment to the exhaust pipe using pop rivets, particularly gas-tight pop rivets, and / or screw fasteners. Screw fasteners can include, for example, bolts and nuts, which are used to attach the saddle plate to the exhaust pipe. Particularly when using a clamping plate that can be inserted into the exhaust pipe, threaded bolts attached to the clamping plate are also conceivable. These threaded bolts can be guided through openings in the saddle plate and / or through openings in the exhaust pipe, thus enabling the saddle plate to be attached to the exhaust pipe by means of a positive-locking screw connection.

[0016] Using pop rivets to attach the saddle plate to the exhaust pipe provides a simple and secure fastening method that can be carried out with minimal effort. This also reduces costs. For the use of pop rivets, the saddle plate can be pre-drilled with openings for the rivets, such as holes. The pop rivets should be gas-tight, meaning that gas-tight connections should be possible using them.

[0017] According to an advantageous embodiment, the assembly may have two measuring ports, wherein a first measuring port has a first nominal diameter and a second measuring port has a second nominal diameter, wherein, in particular, the first nominal diameter differs from the second nominal diameter. For example, the first nominal diameter may have a dimension of 1 inch and the second nominal diameter may have a dimension of 3 inches.

[0018] Furthermore, it is conceivable, for example, that at least one measuring nozzle is welded to the saddle plate in the edge area of ​​each of the through-openings.

[0019] The welded connection of the measuring port creates a secure and gas-tight seal between the saddle plate and the measuring port. This weld is performed before the saddle plate is attached to the exhaust pipe to allow for weld-free assembly of the component.

[0020] In another example, the assembly can further include a sealing element, preferably a high-temperature seal (HT seal), designed to fit between the saddle plate and the exhaust pipe. The seal prevents the escape of exhaust gases routed through the exhaust pipe. High-temperature seals, preferably used as sealing elements, can be operated at high temperatures, for example up to 900°C, without losing their sealing function and / or their structural integrity. Such seals are particularly characterized by the fact that they maintain their sealing function even under cyclical loads with large temperature fluctuations (emergency power systems, such as generators, are only operated in exceptional circumstances) and exhibit only minimal signs of embrittlement.

[0021] Preferably, the sealing element is a flexible (rubber-like) gasket, which is either cut to size or supplied pre-cut in specific shapes. The sealing element should be sufficiently flexible to be mounted on pipes of varying diameters. A preferably used high-temperature (HT) gasket is characterized by minimal thickness reduction at high temperatures and pressures, or during temperature and / or pressure fluctuations. Such stresses can adversely affect the connections with unsuitable gaskets and, in the worst case, cause leaks. The sealing element is preferably designed such that the required surface pressure is low while maintaining a high degree of tightness, which in turn reduces the stress on the connection between the saddle plate and the exhaust pipe.

[0022] Preferably, the sealing element is an asbestos-free, mica-based sealing material. The sealing element can comprise a perforated sheet metal insert, for example made of stainless steel 1.4401 or AISI 316, wherein the sheet metal insert has a thickness of, for example, 0.1 mm. The sealing material can additionally be impregnated with a silicone oil. The mica can be a phlogopite mica comprising an aluminosilicate of mineral origin. Such mica is characterized by a fiber-free, lamellar structure.

[0023] For the attachment of the saddle plate according to the invention to the exhaust pipe, it can be provided according to one embodiment that the brewing assembly has a clamping plate to be arranged inside the exhaust pipe, which at least partially extends beyond the opening wheel of the measuring opening of the exhaust pipe, such that a clamping attachment of the saddle plate to the exhaust pipe can be achieved by means of a force-fit connection between the saddle plate and the clamping plate.

[0024] Under certain circumstances, the exhaust pipe and the saddle plate according to the invention may expand differently when subjected to strong heating, for example, due to high exhaust pipe temperatures, or when subjected to strong cooling, for example, at low ambient temperatures. This can result in the fasteners used, such as bolts or rivets, being subjected to high shear forces in the exhaust pipe's mounting holes. In extreme cases, these forces can cause the fasteners to shear off. As a solution to this problem, it is proposed that the assembly include a clamping plate which is guided through the measuring opening of the exhaust pipe and, in a clamping position where it is supported against the inner wall of the exhaust pipe, is connected to the saddle plate located on the outside of the exhaust pipe above the measuring opening.The clamping plate must therefore have larger dimensions than the measuring opening, at least in some areas, so that in its operating position inside the exhaust pipe, the clamping plate extends beyond the edge of the measuring opening. The clamping plate and the measuring opening can be designed such that the clamping plate can be inserted into the exhaust pipe by appropriate alignment with the measuring opening and positioned inside the exhaust pipe where it extends beyond the edge of the opening, at least in some areas, for example, on two opposite sides of the measuring opening. This allows the clamping plate to be supported against the inner wall of the exhaust pipe, thus ensuring a secure attachment of the saddle plate to the exhaust pipe by clamping it.

[0025] Through-holes can be incorporated into the exhaust pipe with a larger diameter than the fasteners used, to allow movement between the saddle plate and the exhaust pipe and thus prevent shear forces acting on the fasteners. Alternatively or additionally, the fasteners between the saddle plate and the clamping plate can be positioned within the boundaries of the opening edge of the exhaust pipe's measuring port to prevent contact between the fasteners and the exhaust pipe.

[0026] Rivets and / or bolts can be used, for example, as fasteners between the clamping plate and the saddle plate. In a preferred embodiment, threaded bolts are attached to the clamping plate and, when the clamping plate is in the clamped position, are guided outwards through mounting holes in the saddle plate inside the exhaust pipe. Nuts can be screwed onto the threaded bolts on the saddle plate to create a positive clamping connection between the clamping plate, the saddle plate, and the intermediate wall sections of the exhaust pipe.

[0027] Preferably, the saddle plate and / or the clamping plate can be curved in one direction and have a radius of curvature, wherein the radius of curvature is adapted to the outer contour of the exhaust pipe, and wherein the radius of curvature particularly has a value in the range of 100 mm to 700 mm, preferably 200 mm to 600 mm.

[0028] The saddle plate thus forms, for example, part of the cylindrical surface, in particular of a right circular cylinder. The contour of the saddle plate should be shaped to match the wall contour of the exhaust pipe being machined.

[0029] According to another example, the assembly can have a plug for each measuring port to close the port, wherein preferably the measuring port has an internal thread and the plug a corresponding external thread. Alternatively, the plug can have an internal thread and the port a corresponding external thread. Other fastening structures are also conceivable for attaching the plug to the measuring port. For example, the plug can be bonded to the port, particularly by means of a soldered connection. A screw connection between the plug and the port is preferred, as this type of fastening allows for a gas-tight connection and is easily detachable for later use of the port for the installation of measuring sensors or the like.

[0030] The inventive concept is also based on providing a system comprising an exhaust pipe of an emergency power supply system having an internal combustion engine, which has at least one measuring opening, and an assembly according to one of the previously described embodiments, wherein the saddle plate is arranged above the measuring opening and is attached to the exhaust pipe without welding.

[0031] The advantages, effects, and further development of the system result from the advantages, effects, and further development of the assembly described above. To avoid repetition, reference is therefore made to the preceding description in this regard.

[0032] According to one embodiment, the exhaust pipe may have at least two measuring openings, each closed by a saddle plate, wherein the measuring openings are spaced apart from each other on the exhaust pipe, and wherein the measuring openings are preferably offset from each other by an angle with respect to a longitudinal axis of the exhaust pipe, in particular by an angle in the range of 80° to 100°, more preferably by an angle of 90°, and / or offset from each other in the longitudinal direction of the longitudinal axis of the exhaust pipe.

[0033] Especially with larger exhaust pipe diameters, for example, if the exhaust pipe has a nominal diameter of 350 mm or more, two saddle plates, each with two measuring ports, can be attached to the exhaust pipe, offset from each other by an angle. This provides four measuring ports, e.g., two 1-inch ports and two 3-inch ports. The measuring ports can be arranged at the same height relative to the longitudinal axis of the exhaust pipe and offset from each other by an angle. Alternatively, the measuring ports can be arranged at the same angular height relative to the longitudinal axis of the exhaust pipe and offset from each other longitudinally. It is also conceivable that the measuring ports are offset from each other by an angle relative to the longitudinal axis of the exhaust pipe and offset from each other longitudinally along the exhaust pipe.

[0034] According to the invention, a method for mounting at least one assembly as described above onto an exhaust pipe of an emergency power supply system comprising an internal combustion engine is also provided, wherein the method comprises at least the following steps: creating at least one measuring opening on the exhaust pipe; and attaching the saddle plate of each assembly over each measuring opening without welding. According to the invention, the assembly is mounted on an operational emergency power supply system, i.e., in particular, on an emergency power supply system that starts the internal combustion engine to drive a generator upon detection of a power outage.

[0035] The advantages, effects, and further developments of the process arise from the advantages, effects, and further developments of the assembly described above. To avoid repetition, reference is therefore made to the preceding description in this regard.

[0036] In one example, the exhaust pipe can be arranged radially below an outer casing. The outer casing can be, for example, a metal pipe. An insulating layer, in particular an insulating layer comprising an insulating material such as rock wool, mineral wool, or the like, can also be arranged between the outer casing and the exhaust pipe. The method can further comprise the following steps before creating at least one measuring opening: creating at least one access opening in a wall section of an outer casing enclosing the exhaust pipe; penetrating an insulating layer between the access opening and the exhaust pipe arranged radially below the access opening, in particular by removing insulating material from the insulating layer.

[0037] The steps of the procedure can be carried out in any logical or meaningful order.

[0038] According to one example, the welding-free fastening can be carried out using pop rivets, in particular gas-tight pop rivets, and / or using screw fasteners, wherein fastening openings for the pop rivets and / or for the screw fasteners are made in the exhaust pipe around the measuring opening and / or in a clamping plate to be arranged inside the exhaust pipe within an area bounded by the opening edge of the measuring opening (110) before the welding-free fastening.

[0039] Furthermore, during the manufacturing process of the saddle plate, connecting openings for the fasteners used, such as pop rivets or screw fasteners, can be produced, with the fastening openings being arranged to match the connecting openings of the saddle plate.

[0040] Furthermore, prior to the weld-free fastening, it may be provided that a sealing element is arranged between the saddle plate and the exhaust pipe, with the sealing element extending around the opening edge of the measuring opening.

[0041] It may be necessary to first adapt the sealing element to the contour of the saddle plate, particularly its outer dimensions, ensuring it is flush with the edge. The sealing element can be designed as a high-temperature (HT) gasket. The adaptation can be achieved, for example, by matching the edges of the sealing element to the edges of the saddle plate and cutting out the sealing element above the saddle plate's through-hole.

[0042] According to one embodiment of the method, it can be provided that, after the welding-free fastening, an insulating material, in particular at least a part of a previously removed insulating material, is arranged above the saddle plate.

[0043] In another example, it is conceivable that after the welding-free fastening, the access opening is covered with at least one cover plate, the cover plate preferably being attached to the outer shell.

[0044] According to a preferred embodiment, at least two measuring openings are provided, which are arranged offset from each other by an angle with respect to a longitudinal axis of the exhaust pipe, in particular by an angle between 80° and 100°, preferably by an angle of 90°.

[0045] The invention is described below with reference to an exemplary embodiment and the accompanying drawing. The drawing shows: Fig. 1a, b a schematic representation of the system; Fig. 2a, b a schematic exploded view of the assembly in the system; Fig. 3a-d schematic side views of the system; Fig. 4 a schematic cross-sectional representation of the system; and Fig. 5. A flowchart of the process.

[0046] The assembly as a whole will be referred to below by reference numeral 10. The system as a whole will be referred to below by reference numeral 60.

[0047] In the Fig. 1a and Fig. Figure 1b shows schematic views of System 60. System 60 includes an exhaust pipe 48 of an operational internal combustion engine (not shown). Since the internal combustion engine is in an operational state, its electronic components are active.

[0048] The exhaust pipe 48 has an outer casing 34 that extends around the exhaust pipe 48. Thermal insulation 35, e.g. mineral wool, can be arranged between the exhaust pipe 48 and the outer casing 34.

[0049] The outer shell 34 shows, as in Fig. Figure 1a shows a support plate 32 and a cover plate 30, which are arranged above an access opening 52 and attached to the outer shell 34. The support plate 32 and the cover plate 30 can be attached using fasteners, e.g., screws.

[0050] The in Fig. The system 60 shown in Figure 1b has two access openings 52 arranged at an angle of 90° to each other in the circumferential direction of the outer shell 34. One of the access openings 52 is closed by the cover plate 30.

[0051] The other access opening 52 is in Fig. Figure 1b shows the opening. This reveals the exhaust pipe 48 located in the outer casing 34. Below the access opening 52, the exhaust pipe 48 has a component 10, which is also part of the system 60.

[0052] Assembly 10 comprises a saddle plate 16 and, in this example, two measuring ports 12, 14. However, the saddle plate 16 can also have one or more than two measuring ports 12, 14. The first measuring port 12 has a nominal diameter of 1 inch, and the second measuring port 14 has a nominal diameter of 3 inches.

[0053] The measuring ports 12, 14 can be welded to the saddle plate 16.

[0054] The first measuring port 12 is closed by a plug 26, while the second measuring port is closed by a plug 28.

[0055] As in Fig. As shown in Figure 1b, at least one second access point can be provided on the outer casing 34, wherein in this example the further access point is arranged offset by an angle of 90° to the first access point. A further assembly 10, constructed analogously to the preceding description, can be arranged on the exhaust pipe 48 under a further cover plate 30 of the second access point.

[0056] The assembly group 10 will be in the Fig. 2a and Fig. 2b is shown in an exploded view starting from the exhaust pipe 48. The measuring ports 12, 14 are each connected to a through-opening 18 in the saddle plate 16. In Fig. 2a, for perspective reasons, the through-opening 18 is only visible at the measuring nozzle 14.

[0057] A sealing element 24, which can be designed as an HT seal, is arranged between the saddle plate 16 and the exhaust pipe 48. The sealing element 24 has an opening 25 which, when in contact with the saddle plate 16, leaves the through-openings 18 under the measuring ports 12, 14 unobstructed.

[0058] The through-openings 18 are positioned above a measuring opening 22 located in a wall section 20 of the exhaust pipe 48 when the saddle plate 16 is attached. The through-openings 18 and the measuring opening 22 are then connected in such a way that measuring sensors such as exhaust gas probes or the like can be inserted into the interior of the exhaust pipe 48 through the measuring ports 12, 14.

[0059] The saddle plate 16 has a plurality of connecting openings 40 which are aligned with mounting openings 42 arranged on the exhaust pipe 48. The sealing element 24 also has connecting openings 40 which are aligned with the mounting openings 42.

[0060] The connecting openings 40 and the fastening openings 42 allow pop rivets 46 to be inserted to attach the saddle plate 16 to the exhaust pipe 48 without welding. During fastening, the sealing element 24 is fixed between the saddle plate 16 and the exhaust pipe 46.

[0061] The pop rivets 46 are designed to be gas-tight, so that when the saddle plate 16 is fastened, the fastening openings 42 are simultaneously sealed gas-tight.

[0062] The measuring ports 12, 14 can each have an internal thread, while the plugs 26, 28 can each have a corresponding external thread. The plugs 26, 28 can therefore be screwed into or out of the measuring ports 26, 28 to close or open them.

[0063] The cover plate 30 can be attached to the support plate 32 using fasteners 36, e.g., screws. For this purpose, the cover plate 30 can have first openings 38 that align with second openings 39 on the support plate 32. The second openings 39 can, for example, have internal threads into which the fasteners 36, which pass through the first openings, can be screwed if they are designed as screws.

[0064] The support plate 32 serves to reduce the access opening 52 to the smallest possible size after the assembly 10 has been mounted, since the access opening 52 for mounting the assembly 10 may be larger than for carrying out measurements using the measuring ports 12, 14. The cover plate 30 can therefore be used to close the reduced access opening 53. To carry out a measurement, the cover plate 30 can be removed from the reduced access opening 53 by loosening the fastening elements 36.

[0065] The carrier plate 32 can have third openings 44 which can align with fourth openings 50 on the outer shell 34. The carrier plate 32 can be attached to the outer shell 34 via the third and fourth openings 44, 50 using further fastening elements 37.

[0066] Two access openings 52 are also visible on the outer casing 34, which are arranged at an angle of 90° to each other around the longitudinal axis 54 of the exhaust pipe 48.

[0067] In Fig. 2b shows a side view of the exploded view described above. In particular, by Fig. Figure 2b further clarifies that pop rivets 46 are provided on the saddle plate 16 for fastening the saddle plate 16 to the exhaust pipe 48.

[0068] As explained in the general part of the description, but not shown here, a clamping plate can be provided which is arranged inside the exhaust pipe 48. In a clamping position in which the clamping plate is supported against the inner wall of the exhaust pipe 48, the clamping plate can be connected to the saddle plate 16 to create a clamping connection between the clamping plate, the saddle plate 16 and the wall sections of the exhaust pipe 48 located between them.

[0069] In the Fig. Figures 3a to 3c show different side views of the system 60, which has two assemblies 10.

[0070] Fig. Figure 3a shows a side view of the system 60, in which the access openings 52 are closed by means of cover plates 30.

[0071] In Fig. In 3b, the cover plates 30 have been removed and the access openings 52 are open. The assembly 10 is visible through the access opening 52, which is oriented parallel to the image plane.

[0072] Furthermore, it becomes clear that the two access openings 52 are arranged offset from each other by an angle of 90° along the circumference of the outer shell 34.

[0073] Fig. 3c shows a relationship to Fig. 3b is a view of system 60 rotated by 90°. Therefore, in this figure, the second assembly 10 can be seen through the second access opening 52.

[0074] Fig. 3D shows a detailed view of this assembly 10. Fig. 3c. The plugs 26, 28 are attached to the measuring ports 12, 14. The heads of the pop rivets 46, with which the saddle plate 16 is attached to the exhaust pipe 48, are also visible.

[0075] In Fig. Figure 4 is a cross-sectional view through the longitudinal axis 54 of the exhaust pipe 30. This view illustrates the 90° angular relationship between two assemblies 10 of the system 60. Due to this arrangement, the measuring ports 12, 14 of one assembly 10 point in a direction rotated by 90° relative to the measuring ports 12, 14 of the other assembly 10. Measuring probes can thus be inserted into the exhaust pipe 48 from two different directions.

[0076] In Fig.Figure 5 shows a flowchart of procedure 100 for mounting at least one assembly onto an exhaust pipe of an operational internal combustion engine. The measuring ports of the assembly may be closed by plugs.

[0077] If the exhaust pipe has an outer casing, an access opening can optionally be created in a wall section of the outer casing located along a measuring section of the exhaust pipe. The access opening in the wall section can be created, for example, by cutting.

[0078] If several components are to be attached to the exhaust pipe, a corresponding number of access openings can be provided in the outer casing. In particular, two access openings can be provided, oriented at a 90° angle to each other around the longitudinal axis of the exhaust pipe.

[0079] If the exhaust pipe has insulating material between the outer casing and the inner pipe, the insulating material between the access opening and the exhaust pipe can be removed in a further step 104. This creates a working area in which the exhaust pipe can be processed for the subsequent steps of procedure 100.

[0080] In step 106, at least one measuring opening is created in the exposed wall section of the exhaust pipe. Multiple measuring openings can be created on the exhaust pipe. If two measuring openings are created, they can be positioned at a 90° angle to the longitudinal axis of the exhaust pipe.

[0081] As an optional step, 110 mounting holes for pop rivets can be produced around the measuring port. The pop rivets can then be inserted through these mounting holes and fixed to the inner wall of the exhaust pipe. Preferably, the mounting holes are produced, for example, by drilling when the saddle plate is positioned on the measuring port, so that aligned openings are created through which the rivets can be inserted.

[0082] In a further optional step 112, a sealing element, preferably an HT seal, can be adapted to the saddle plate of the assembly to be mounted. The sealing element can initially be larger than required and then cut to size accordingly in step 112.

[0083] The sealing element can be cut to size so that it extends around the measuring port, leaving the port unobstructed. Furthermore, the sealing element can be cut to the dimensions of the saddle plate.

[0084] In a further optional step 114, a portion of the insulation removed in step 104 can be arranged in the access opening around the measuring port. The measuring port itself remains unobstructed. Optional step 114 can only be performed if optional step 104 has been performed beforehand.

[0085] In step 108, the assembly is attached to the exhaust pipe above the measuring port without welding. This can be done using pop rivets, which are inserted through the connecting holes of the saddle plate into the mounting holes from step 110.

[0086] If optional step 112 has been implemented, the sealing element can be positioned around the measuring port between the saddle plate of the assembly being mounted and the wall of the exhaust pipe when attaching the assembly to the exhaust pipe. The saddle plate attached to the exhaust pipe holds the sealing element between the wall of the exhaust pipe and the saddle plate.

[0087] In a further optional step 116, the access opening can be covered with a cover plate after the assembly has been attached to the exhaust pipe. The cover plate can be attached to the outer casing. The cover plate can be fastened, for example, with screws.

[0088] The example described above does not in any way limit the invention. Rather, the invention can be modified in numerous ways. All features of the invention described above can be essential to the invention, either alone or in combination. REFERENCE MARK LIST 10 assembly 12 measuring ports 14 measuring ports 16 Saddle plate 18 Passage opening 20 wall section 22 Measuring aperture 24 sealing element 25 Opening 26 plugs 28 plugs 30 Cover plate 32 Carrier plate 34 Outer jacket 35 Insulation 36 Fastening element 37 Fastening element 38 Opening 39 Opening 40 Connection opening 42 Mounting opening 44 Opening 46 pop rivets 48 Exhaust pipe 50 opening 52 Access opening 53 reduced access opening 54 Longitudinal axis 60 System

Claims

[1] Method for mounting at least one assembly (10) comprising at least one measuring port (12, 14) for passing an exhaust gas probe and a saddle plate (16) having at least one through-opening (18), wherein the measuring port (12, 14) is attached to the saddle plate (16) at the edge of one of the through-openings (18), to an exhaust pipe (48) of an emergency power supply system comprising an internal combustion engine, wherein the emergency power supply system is kept ready for operation during the execution of the mounting steps, and wherein the method (100) comprises at least the following steps: Producing (106) at least one measuring opening (22) on the exhaust pipe (48); and attaching (108) the saddle plate (16) of each assembly (10) over each measuring opening (22) without welding. [2] Method according to claim 1, characterized by , that the procedure (100) further comprises the following steps prior to the manufacture (106) of at least one measuring aperture (22): Providing (102) at least one access opening (52) in a wall section of an outer casing (34) enclosing the exhaust pipe (48); and Penetration (104) of an insulation (35) between the access opening (52) and the exhaust pipe (48) arranged radially below the access opening (52). [3] Method according to claim 1 or 2, characterized by , that the welding-free fastening is carried out using pop rivets (46) and / or screw fasteners, wherein fastening openings for the pop rivets and / or for the screw fasteners are made in the exhaust pipe (48) around the measuring opening (22) and / or in a clamping plate to be arranged inside the exhaust pipe (48) within an area limited by the opening edge of the measuring opening (22) prior to the welding-free fastening (110). [4] Method according to any one of claims 1 to 3, characterized by, that prior to the weld-free fastening (108) a sealing element (24) is arranged between the saddle plate (16) and the exhaust pipe (48) (112), wherein the sealing element (24) extends around the opening edge of the measuring opening (22). [5] Method according to any one of claims 1 to 4, characterized by , that after the welding-free fastening (108) insulation material is arranged above the saddle plate (16) (114). [6] Method according to any one of claims 1 to 5, characterized by , that after the welding-free fastening (108) the access opening (52) is covered with at least one cover plate (30) [7] Use of an assembly (10) for mounting measuring nozzles (12, 14) to an exhaust pipe (48) of an emergency power supply system comprising an internal combustion engine, wherein the assembly (10) comprises at least one measuring nozzle (12, 14) for passing an exhaust gas probe and a saddle plate (16) with at least one through-opening (18), and wherein each of the measuring nozzles (12, 14) is attached to the saddle plate (16) at the edge of each of the through-openings (18), for the weld-free attachment of the saddle plate (16) to the exhaust pipe (48) over a measuring opening (22) of the exhaust pipe (48) while the emergency power supply system is kept ready for operation. [8] Use of an assembly (10) according to claim 7, characterized by , that the saddle plate (16) is designed for attachment to the exhaust pipe (48) by means of pop rivets (46) and / or by means of screw connecting elements. [9] Use of an assembly (10) according to claim 7 or 8, characterized by, that the assembly (10) has two measuring ports (12, 14), wherein a first measuring port (12, 14) has a first nominal diameter and a second measuring port (12, 14) has a second nominal diameter. [10] Use of an assembly (10) according to any one of claims 7 to 9, characterized by , that at least one measuring nozzle (12, 14) is welded to the saddle plate (16) in the edge area of ​​each of the through openings (18). [11] Use of an assembly (10) according to any one of claims 7 to 10, characterized by , that the assembly (10) further comprises a sealing element (24) which is designed to fit between the saddle plate (16) and the exhaust pipe (48). [12] Use of an assembly (10) according to any one of claims 7 to 11, characterized by, that the brewing group (10) has a clamping plate to be arranged inside the exhaust pipe (48), which at least partially extends beyond the opening wheel of the measuring opening (22) of the exhaust pipe (48), such that a clamping attachment of the saddle plate (16) to the exhaust pipe (48) can be achieved by means of a force-fit connection between the saddle plate (16) and the clamping plate. [13] Use of an assembly (10) according to one of claims 7 to 11 or according to claim 12, characterized by , that the saddle plate (16) and / or the clamping plate is curved in one direction and has a radius of curvature, wherein the radius of curvature is adapted to the outer contour of the exhaust pipe (48). [14] Use of an assembly (10) according to any one of claims 7 to 13, characterized by , that the assembly (10) has a plug (26, 28) for closing each measuring port (12, 14).

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