Modular pipeline assembly for installation in aircraft fuselage

Abstract

The invention relates to pipeline installation in an aircraft. In order to provide improved installation for pipelines or similar system facilities on commercial aircraft, a retaining bracket (10) for a pipeline assembly in an aircraft fuselage is provided. The bracket includes a receiving space (12) and a bearing portion (14). The support part comprises a holding part (16) at least partially enclosing a receiving space designed for receiving a pipeline section of the assembly, and the holding part is designed for holding the pipeline section. The support portion further comprises a support member (18) configured for fixedly attaching the holding member to the support. The retaining member is attached to the support member via a movable attachment configured to provide a predetermined relative movement of the retaining member relative to the support member in an installed state of the pipeline assembly.

Description

Technical Field

[0001] The present invention relates to the installation of pipelines in an aircraft, and in particular to a retaining bracket for a pipeline assembly in an aircraft fuselage, to a modular pipeline assembly for installation in an aircraft fuselage, to an aircraft, to a method for installing a first pipeline section and at least one second pipeline section in the fuselage of an aircraft, and to a tool for installing the retaining bracket. Background Art

[0002] Commercial aircraft are typically equipped with different devices, such as devices for providing utility services, such as lavatories, to passengers or for operating a galley by crew members for in-flight passenger services. Different supply pipelines and discharge pipelines can be installed in the space enclosed by the fuselage. As an example, a galley and sanitary equipment may require a potable water system for providing a sufficient quantity and quality of fresh water. Potable water is typically stored in a centralized water tank and distributed via a pipeline network. Such pipelines can be provided as stainless steel pipelines or titanium pipelines having a relatively small diameter, for example, between 1 / 2 inch (1.27 cm) and 3 / 4 inch (1.905 cm). Other examples of high-pressure and low-pressure potable water pipelines are flexible hoses made of a plastic material such as PEEK, where the high-pressure hose includes an outer diameter of, for example, 0.6 cm. In addition, a vacuum toilet system based on a pneumatic transmission system can be installed for the sanitary treatment of human excrement. For this purpose, titanium pipelines with a diameter that can include 2 inches (5.08 cm) are provided leading to a central waste tank. Further, a waste water system can be installed for discharging waste water, such as from a washbasin, out of the cabin via a heated discharge riser. As an example, EP 3 385 163A1 and US10,822,774B2 show an aircraft including a high-pressure water supply and distribution system. In addition, different types of pipelines can be installed in parallel, requiring multiple different brackets and mounting structures, and the different brackets and mounting structures need to be adapted to the different requirements of different types of pipelines. However, due to different expansion behaviors, additional compensation sections may have to be installed, which has proven to result in an increased complexity of the installation system, also meaning an undesirable weight and increased costs. Summary of the Invention

[0003] Therefore, there may be a need for an improved installation of pipelines or similar system facilities on commercial aircraft to avoid at least some of the above limitations.

[0004] The object of the invention is solved by the subject matter of the independent claims; other embodiments are incorporated in the dependent claims. It should be noted that the aspects described below of the invention are also applicable to a retaining bracket for a pipeline assembly in an aircraft fuselage, a modular pipeline assembly for installation in an aircraft fuselage, an aircraft, a tool for installing the retaining bracket and a method for installing a first pipeline section and at least one second pipeline section in the fuselage of an aircraft.

[0005] According to the invention, there is provided a retaining bracket for a pipeline assembly in an aircraft fuselage. The bracket includes a receiving space and a support portion. The support portion includes a retaining member that at least partially surrounds the receiving space designed to receive pipeline sections of the assembly. The retaining member is designed to hold the pipeline sections. The support portion further includes a support member configured to fixedly attach the retaining member to a support. The retaining member is attached to the support member via a movable attachment that is configured to provide a predetermined relative movement of the retaining member relative to the support member in the installed state of the pipeline assembly.

[0006] Thus, the pipeline, i.e., the pipe, can be firmly held while still allowing movement caused by, for example, heat or pressure that causes expansion or even contraction. The movable attachment provides a fixed connection to a structural member or another (less or non-movable) pipeline or pipe on one side, while providing a predetermined play or option for movement on the other side.

[0007] According to an example, the retaining member of the support portion is adapted to slide and / or rotate relative to the support member.

[0008] As an option, a fixed second pipeline bracket and a movable second pipeline bracket can be used. When a bend is installed in the second pipeline section, the movable second pipeline bracket can be rotated by a certain angle about the central axis of the first pipeline section. The angle between the rotated second pipeline bracket and the fixed second pipeline bracket is greater than zero.

[0009] In an advantageous embodiment, the second support portion is adapted to slide and / or rotate on the first pipeline section to compensate for expansion movement and / or compression movement of at least one second pipeline section. In particular, when forming at least one bend, the second pipeline bracket can rotate about the local extension axis of the corresponding first pipeline section. When the second pipeline section is compressed, the size of the corresponding bend can be reduced, and when the second pipeline section expands, the size of the corresponding bend can be increased. By rotating the second support portion about the corresponding first pipeline section, this change in size is compensated. It is conceivable that the second support portion exerts only a small resistance to the movement relative to the first pipeline section, so that compensation can always be carried out.

[0010] For a second pipeline section with reduced flexibility, the support part can be designed differently in order to avoid high structural stresses on the support part caused by the second pipeline section. In a modified example, the bend has a larger bending radius, which is suitable for the stiffer second pipeline section.

[0011] During installation, the bend is set by deflecting one of the second pipeline supports in the second pipeline supports around the first pipeline section by a certain angle. For example, the angle can be up to 45°. Further, at least one of the other second pipeline supports in the second pipeline supports can be fixedly attached to the first pipeline section. It is conceivable that two other second pipeline supports arranged adjacent to the opposite sides of the movable second pipeline support are both fixed.

[0012] It is also conceivable that the movable / rotatable second pipeline support can pivot around the center line of the first pipeline section. Similarly, it is conceivable that the range of rotation is restricted to avoid the second pipeline section being jammed when the angle is too large. To achieve this, for example, the rotation can be restricted to an angle of + / −30°. However, other restrictions, i.e., smaller or larger restrictions, are possible.

[0013] If the first pipeline section is stretched in the longitudinal direction, a traction force can be generated in the second pipeline section and on the fixed second pipeline supports, which results in a reduction in the size of the bend. This is achieved by rotating the corresponding second pipeline support to a smaller angle compared to the initial installation position. However, if the first pipeline section is compressed in the longitudinal direction, the size of the bend increases to compensate for the increased overlength of the second pipeline section. Therefore, the second pipeline support rotates to an increased angle compared to the initial installation position.

[0014] Relative movement between the first pipeline section and the second pipeline section can occur for various reasons. For example, due to different coefficients of thermal expansion between the first pipeline section and the second pipeline section due to the use of different materials; due to a flexible coupling in the first pipeline section, which allows compensation for deformations of the mechanical assembly formed by the first pipeline section and the structural components in the longitudinal direction and the angular direction; due to different temperatures of the first pipeline section and the second pipeline section and / or different temperatures inside the first pipeline section and inside the second pipeline section; due to different pressure conditions in the first pipeline section compared to the second pipeline section, such as negative pressure in the first pipeline section and positive pressure in the second pipeline section.

[0015] The rotational movement in the second pipeline support can be achieved between the corresponding second pipeline support and the first pipeline section, or the second pipeline support can be arranged as part of the second support portion. Movements and rotations in other directions should be blocked or released. It is clear that several arrangements of the fixed second pipeline support and the rotatable second pipeline support along the first pipeline section are possible.

[0016] Thus, the expected and desired movements can be predicted and allowed in a targeted manner while providing limitations on undesired movements.

[0017] According to an example, the support member is configured to be attached to the first pipeline section, and the holding member is configured to receive a second pipeline section different from the first pipeline section.

[0018] As an advantage, the second pipeline can be held by the mounting member in a distance pattern suitable for the second pipeline section, while the first pipeline section is attached to a structural member via the mounting member, for example, in a distance pattern defined by available structural components.

[0019] According to an example, the support member and the holding member are provided as separate members that can be detachably connected to each other.

[0020] This allows for a more efficient installation procedure and also takes into account possible repairs and maintenance.

[0021] According to an example, for the installation of the pipeline, the holding member can be fixed relative to the support member in a predetermined installation position.

[0022] This temporary fixation is beneficial for the installation procedure.

[0023] According to the present invention, there is also provided a modular pipeline assembly for installation in an aircraft fuselage. The assembly includes a first pipeline section, at least one second pipeline section, a set of first pipeline supports, and a set of second pipeline supports. The first pipeline supports include a first receiving space designed to hold the first pipeline section and a first support portion for attaching the first pipeline support to a structural member of the fuselage. The second pipeline supports include a second receiving space designed to hold at least one second pipeline section and a second support portion for attaching the second pipeline support to a support member. The set of second pipeline supports includes at least one holding support according to one of the foregoing examples. At least one second pipeline section is attached to the first pipeline section by a plurality of second pipeline supports, and the plurality of second pipeline supports are at least partially arranged at a distance from the first pipeline supports and are independent of the first pipeline supports.

[0024] Thus, the use of the first pipeline section for holding the second pipeline section enables modular pre-assembly of a number of components, in this case different types of pipeline sections, which can then be installed in the aircraft as modules. The installation and attachment of the second pipeline can be optimized in terms of the number and spacing of the respective mountings. The mobility provided by the mountings holding the second pipeline section allows the first pipeline section to expand independently or decrease in length relative to the second pipeline section during operation and over time.

[0025] According to an example, at least one second pipeline section includes the same flexibility or higher flexibility compared to the first pipeline section.

[0026] Due to the fact that the first pipeline section is arranged linearly, individual mountings can be arranged in the most appropriate manner, which is contrary to the structural components for holding the first pipeline section, such as frames or girders, which are usually arranged in a repetitive but spaced manner.

[0027] According to an example, the first pipeline section includes a vacuum pipeline. At least one second pipeline section includes at least one water hose.

[0028] This combination is suitable for the supply and discharge of the lavatory and allows for weight and space-saving installation.

[0029] According to the invention, an aircraft is also provided. The aircraft includes a fuselage having at least one group consisting of a cargo space and a cabin space. The aircraft also includes mounting means in the fuselage. The mounting means includes at least one modular pipeline assembly according to one of the examples above.

[0030] According to the invention, a method for installing a first pipeline section and at least one second pipeline section in the fuselage of an aircraft is also provided. The method includes the following steps:

[0031] - Attaching a first pipeline section having a first diameter to a structural component of the fuselage via a first pipeline bracket, the first pipeline bracket including a first receiving space designed to hold the first pipeline section and a first support portion for attaching the first pipeline bracket to the structural component; and

[0032] - Attaching at least one second pipeline section having a second diameter to the first pipeline section via a second pipeline bracket, the second pipeline bracket including a second receiving space designed to hold at least one second pipeline section and a second support portion for attaching the second pipeline bracket to the first pipeline section.

[0033] At least one second pipeline section includes a higher flexibility compared to the first pipeline section. Additionally, at least one second pipeline section is attached to the first pipeline section by a plurality of second pipeline supports, the plurality of second pipeline supports being arranged at a distance from the first pipeline supports and independent of the first pipeline supports.

[0034] According to the invention, there is also provided a tool for mounting a retaining bracket according to an example of the above examples to a mounting surface having at least a partially circular mounting profile. The tool includes a first engaging portion for engaging releasably with a connecting engaging portion of the retaining bracket. The tool further includes a second engaging portion for engaging temporarily with a measuring device. When engaging with the measuring device, the measuring device provides information about the angular relationship between the retaining bracket and the mounting surface.

[0035] According to one aspect, there is provided a mounting for a pipeline section that allows movement in a predetermined and targeted manner while still ensuring a safe installation. Such a mounting is particularly useful for attaching a second pipeline to a first pipeline, for example, mounting a smaller pipeline to a larger pipeline.

[0036] According to one aspect, the retaining bracket provides a reliable but movable support point for the respective pipelines of the pipeline assembly.

[0037] With reference to the embodiments described hereinafter, these and other aspects of the invention will become apparent and be elucidated. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Exemplary embodiments of the invention will be described hereinafter with reference to the following drawings:

[0039] Figure 1 An example of a retaining bracket for a pipeline assembly in an aircraft fuselage is schematically shown.

[0040] Figure 2 An example of a modular pipeline assembly for installation in an aircraft fuselage is shown.

[0041] Figure 3 Another example of a modular pipeline assembly with a movable mounting is shown in an exploded view.

[0042] Figure 4 Shown in an installed view Figure 3 of the example.

[0043] Figure 5 An example of a modular pipeline assembly with a fixed mounting is shown in an exploded view.

[0044] Figure 6 Shown in an installed view Figure 5 of the example.

[0045] Figure 7 Another example of a modular pipeline assembly is shown in a top view.

[0046] Figure 8a Another example of a modular pipeline assembly is shown in a side view; and Figure 8b A schematic cross-sectional view of the modular pipeline assembly along Figure 8a is shown.

[0047] Figure 9 An enlarged portion of the modular pipeline assembly is shown in the upper portion and an enlarged portion of the corresponding cross-section is shown in the lower portion. Figure 8a and Figure 8b is shown in the lower portion.

[0048] Figure 10 Another example of a modular pipeline assembly is shown, in which a second pipeline section is mounted to a first pipeline section and also to a structural component of an aircraft.

[0049] Figure 11 A schematic top view of an aircraft including a pipeline assembly is shown.

[0050] Figure 12 An example of the basic steps of a method for mounting a first pipeline section and at least one second pipeline section in the fuselage of an aircraft is shown.

[0051] Figure 13 A tool for mounting a retaining bracket is shown.

[0052] Figure 14 A tool for the case during installation of the modular pipeline assembly is shown. Figure 13 is shown.

[0053] Figure 15 Another view of the tool for Figure 14 is shown. DETAILED DESCRIPTION

[0054] Certain embodiments will now be described in more detail with reference to the accompanying drawings. In the following description, the same reference numerals are used for the same elements even in different drawings. The content defined in the specification, such as the detailed construction and elements, is provided to assist in a comprehensive understanding of the exemplary embodiments. In addition, well-known functions or constructions are not described in detail because they would obscure the embodiments with unnecessary details. Further, expressions such as "at least one of..." when preceding a list of elements modify the entire list of elements rather than a single element of the list.

[0055] Figure 1An example of a retaining bracket 10 for a pipeline assembly in an aircraft fuselage is schematically shown. The retaining bracket includes a receiving space 12 and a support portion 14. The support portion 14 includes a retaining member 16 that at least partially surrounds the receiving space designed to receive the pipeline section of the assembly, and the retaining member 16 is designed to hold the pipeline section. The support portion 14 further includes a support member 18 configured to fixedly attach the retaining member 16 to the support. The retaining member 16 is attached to the support member 18 via a movable attachment that is configured to provide a predetermined relative movement of the retaining member 16 relative to the support member 18 in the installed state of the pipeline assembly. The movability is indicated by two arrows 20 in Figure 1 as shown.

[0056] Figure 2 An example of a modular pipeline assembly 22 for installation in an aircraft fuselage is shown in cross-section. The assembly 22 includes a first pipeline section 24 and at least one second pipeline section 26. The assembly 22 further includes a set of first pipeline brackets ( Figure 2 not shown in the figure, but also see Figure 7 ), and a set of second pipeline brackets 28. The first pipeline brackets include a first receiving space designed to hold the first pipeline section 24 and a first support portion for attaching the first pipeline brackets to the structural components of the fuselage. The second pipeline brackets 28 include a second receiving space 30 designed to hold at least one second pipeline section 26 and a second support portion 32 for attaching the second pipeline brackets to the support. The set of second pipeline brackets 28 includes an example of at least one retaining bracket 10 according to one of the foregoing examples. At least one second pipeline section 26 is attached to the first pipeline section 24 by a plurality of second pipeline brackets 28, and the plurality of second pipeline brackets 28 are at least partially arranged at a distance from the first pipeline brackets and are independent of the first pipeline brackets.

[0057] It should be noted that Figure 2 a cross-sectional view showing only one second pipeline section 24 and one second pipeline bracket 28 is shown. It should be further noted that more second pipeline sections 24 and more second pipeline brackets 28 can also be provided, for example as shown in Figure 7 the figure.

[0058] As an example, the second support portion 32 of the second pipeline bracket 28 includes an annular sleeve 34 mounted on the first pipeline section 24. The annular sleeve 34 includes a widened section 34 that is configured to hold a sliding retainer of a holding section 36, and the holding section 36 forms the second receiving space 30. The holding section 36 can move relative to the second support portion 32. The movement is indicated by an arrow 38.

[0059] In an example, a set of second pipeline brackets includes a plurality of holding brackets according to one of the foregoing examples.

[0060] In another example, another set of second pipeline brackets is provided as immovable holding brackets, i.e., brackets that firmly fix some components of at least one second pipeline section. For example, the holding component and the supporting component are fixedly connected, i.e., immovably, for example by forming them in an integrated manner. In another example, the holding component is directly mounted to a base or a support, such as mounted to a structural component or a first pipeline section. The first receiving space is designed to receive and hold the first pipeline section.

[0061] The term "holding bracket" relates to a device arranged to hold a pipeline, such as a supply pipeline, in a pipeline assembly in an aircraft.

[0062] The term "holding component" relates to the component of the bracket arranged to actually hold the pipeline section.

[0063] The term "supporting component" relates to the component of the bracket arranged for the installation of the bracket, such as the installation to a structural support or another pipeline.

[0064] The term "attachment" relates to a holding component connected or mounted to a supporting component.

[0065] The term "removable attachment" relates to holding the holding component such that relative movement is still possible.

[0066] The term "predetermined relative movement" relates to the movement between two defined external positions, such as the movement along a defined movement path between two abutting parts or stop parts.

[0067] The term "installed state" relates to the state when the holding bracket and the pipeline assembly are installed and in use.

[0068] Providing a predetermined relative movement allows compensating for the relative movement of the pipeline, such as the relative movement caused by a pressure difference inside the pipeline or due to temperature changes or due to external loads or due to installation tolerances or due to flight movements.

[0069] The term "pipeline" refers to a pipeline for conveying a medium, such as a fluid like gas or liquid or a mixture of gas and liquid. The term pipeline can also be referred to as a channel or a duct or a pipe. An example is a pipeline for supplying and discharging a liquid like water. Another example is a vacuum pipe for discharging waste and wastewater from a washroom, for example. Another example is a duct for supplying fuels like kerosene, hydrogen, etc. Yet another example is an oxygen channel.

[0070] Examples of removable fixing elements are removable pins (see, for example Figure 4 ).

[0071] Another example of a removable fixing element is an externally applied clamping or fastening element.

[0072] As an option, the removable fixing element is arranged to be reusable, for example for maintenance and repair purposes.

[0073] An example of a removable fixing element is a predetermined breaking point between a holding part and a supporting part. In the example, the breaking point is configured to break during a first operating cycle out of a first set of operating cycles.

[0074] In the example, all second brackets for a second pipeline are provided as the same basic brackets with fixing elements, but after assembly and installation, the fixing elements are removed in a part of the second brackets, thereby providing a movable holder. While the fixing elements are retained, i.e., not removed, in another part of the second brackets, thereby providing a fixed rigid holder.

[0075] In an example not shown in further detail, the second support part is adapted to move relative to the first pipeline section to compensate for the expansion movement and / or compression movement of at least one second pipeline section.

[0076] In the example, the second support part is adapted to move relative to the first pipeline section to compensate for the expansion movement and / or compression movement of at least one second pipeline section relative to the first pipeline section.

[0077] For example, relative movement is provided to compensate for the expansion movement of the first pipeline section, while at least one second pipeline section exhibits a smaller expansion movement.

[0078] For example, relative movement is provided to compensate for the compression movement of the first pipeline section, while at least one second pipeline section exhibits a smaller compression movement.

[0079] In the example, the second support part is adapted to slide and / or rotate on the first pipeline section to compensate for the expansion movement and / or compression movement of at least one second pipeline section.

[0080] In the example, the second support part is adapted to slide and / or rotate relative to the first pipeline section to compensate for the expansion movement and / or compression movement of at least one second pipeline section.

[0081] In the example, the first pipeline section has a first diameter and at least one second pipeline section has a second diameter.

[0082] As an example, the first diameter is greater than the second diameter.

[0083] As another example, the first diameter is less than the second diameter. As yet another example, the first diameter is similar or even equal to the second diameter.

[0084] In an example not shown in further detail, the second support portion is configured to attach the second pipeline bracket to the first pipeline section.

[0085] In an option, a portion of the second pipeline bracket is configured to attach the second pipeline bracket to the first pipeline section, and another portion of the second pipeline bracket is configured to attach the second pipeline bracket to the support structure.

[0086] In an option, the second support portion is adapted to slide and / or rotate on the first pipeline section to compensate for the expansion movement and / or compression movement of at least one second pipeline section.

[0087] In an example, the retaining member is capable of sliding circumferentially relative to the support member.

[0088] In an example, the support member is provided with a receiving space for movably engaging a connecting portion of the retaining member. For example, the receiving space is a groove in which the connecting portion engages in a sliding manner.

[0089] In an example, the support portion defines a circular groove around a portion of the first pipeline section. The retaining member is provided as a partial circular clip that circumferentially encloses a portion of the first pipeline section. In an example, the support portion is provided to define two cable binders or other circumferential pipeline clips that form the space between the grooves.

[0090] In another example, the support portion is provided to define a cable binder or other circumferential pipeline clip that forms the space between the abutting annular form structures.

[0091] In yet another example, a clip with a screw is provided as a locking device or other fixing device, such as a snap device.

[0092] In another example, the retaining member is capable of rotating relative to the support member in a quasi - circumferential manner.

[0093] In another example, the retaining member is a pin that serves as a rotation axis.

[0094] In another example, the retaining member is connected to the support member by a flexible connecting portion to allow rotational movement.

[0095] In an example not shown in further detail, the second support portion is configured to attach the second pipeline bracket to the support structure.

[0096] In an example, a movable support is thus also provided at a location where structural components are available for installing the second pipeline section.

[0097] In an example, not further shown in detail, at least one second pipeline section includes the same flexibility or higher flexibility compared to the first pipeline section.

[0098] In the example, the first pipeline section is substantially rigid.

[0099] In a first variant, a modular pipeline assembly for installation in an aircraft fuselage is provided. The assembly includes: a first pipeline section; at least one second pipeline section; a set of first pipeline brackets; and a set of second pipeline brackets. The first pipeline brackets include a first receiving space designed to hold the first pipeline section and a first supporting portion for attaching the first pipeline brackets to a structural component of the fuselage. The second pipeline brackets include a second receiving space designed to hold at least one second pipeline section and a second supporting portion for attaching the second pipeline brackets to the first pipeline section. At least one second pipeline section is attached to the first pipeline section by a plurality of second pipeline brackets, the plurality of second pipeline brackets being arranged at a distance from the first pipeline brackets and independent of the first pipeline brackets.

[0100] In the example, the first pipeline section has a first diameter. In another example, at least one second pipeline section has a second diameter.

[0101] In the example, at least one second pipeline section includes the same flexibility or higher flexibility compared to the first pipeline section.

[0102] In an option of the first variant, the second supporting portion is adapted to slide and / or rotate on the first pipeline section to compensate for the expansion movement and / or compression movement of at least one second pipeline section.

[0103] In a second variant, a modular pipeline assembly for installation in an aircraft fuselage is provided. The assembly includes: a first pipeline section having a first diameter; at least one second pipeline section having a second diameter; a set of first pipeline brackets; and a set of second pipeline brackets. The first pipeline brackets include a first receiving space designed to hold the first pipeline section and a first supporting portion for attaching the first pipeline brackets to a structural component of the fuselage. The second pipeline brackets include a second receiving space designed to hold at least one second pipeline section and a second supporting portion for attaching the second pipeline brackets to the first pipeline section. At least one second pipeline section includes the same flexibility or higher flexibility compared to the first pipeline section. At least one second pipeline section is attached to the first pipeline section by a plurality of second pipeline brackets, the plurality of second pipeline brackets being arranged at a distance from the first pipeline brackets and independent of the first pipeline brackets.

[0104] In the options of the second variant, the second support part is adapted to slide and / or rotate on the first pipeline section for compensating the expansion movement and / or compression movement of at least one second pipeline section.

[0105] In an example, at least one second pipeline support is arranged between two consecutive first pipeline supports.

[0106] In an example not shown in further detail, at least one second pipeline section includes at least one bend located in an overlapping area overlapping with one of the first pipeline supports in the first pipeline supports and / or another component.

[0107] In an example, the first diameter exceeds the second diameter.

[0108] In an example, the second pipeline support includes a clamping member that encloses the first pipeline section in a pincer-like manner.

[0109] In an example, the second pipeline support includes a static resistance layer that is in direct contact with the surface of the first pipeline section.

[0110] In an example, the second pipeline support is designed to hold a plurality of second pipeline sections.

[0111] In an example, the second pipeline support includes at least one snap connector for holding at least one second pipeline section.

[0112] In an example, the second receiving space and the second support part are provided in the base component and the top component. In addition, the base component and the top component can be connected to each other by a releasable connector.

[0113] In an example, the support component and the holding component are provided as the base component and the top component. The base component and the top component can be connected to each other by a releasable connector.

[0114] In an example, for the installation of the pipeline, the holding component can be fixed relative to the support component in a predetermined installation position, for example, Figure 4 fixed in a predetermined installation position relative to the support component by the pin 50 shown in

[0115] In an example, a removable fixing element is provided, which prevents the relative movement of the holding component relative to the support component and the relative movement of the support component relative to the holding component. When the fixing element is removed, the holding component and the support component can move relative to each other.

[0116] Figure 3Another example of a modular pipeline assembly 22 with a movable mount is shown in an exploded view. The second support portion 32 includes a base member 40 that encloses a space 42 for receiving the first pipeline section 24. The second support portion 32 also includes a top member 44 that encloses a second receiving space 30. The top member 44 includes a first portion 46 that forms a structural member and a second portion 48 that forms a covering member for holding the second pipeline section 26 (see Figure 4 ).

[0117] The connecting portion of the top member 44, i.e., Figure 3 the lower middle portion, is shaped like a foot and has a wider plate with a contour that is shaped to conform to the guiding portion of the base member 40 in a curved manner. In an option, lateral grooves are provided in the side wall portions of the base member 40 that define the guiding portion for guiding and holding the top member 44 in a slidable manner.

[0118] Figure 4 An example of Figure 3 is shown in an installed view. For installation, a temporary fixing device 50 such as a removable pin is provided that is inserted into a matching recess or hole. In addition, an end stop 52 is provided to limit the possible sliding movement of the top member 44 relative to the base member 40.

[0119] In an option, the outer contour of the lateral portion that provides the end stop is set to engage with the engaging portion of the installation tool (see also Figures 13 to 15 ).

[0120] Once the mount with the second pipeline section 26 is installed in the correct angular position that defines the range of movement during operation, the pin can be pulled out.

[0121] In an option, instead of the sliding movement as shown in Figure 4 , a pivot mount of the upper portion to the lower portion is provided to allow rotational or pivoting movement of the mount of the second pipeline section.

[0122] In an example, as shown in Figure 4 , the holding member of the support portion is adapted to slide and / or rotate relative to the support member.

[0123] In an example not shown in further detail, the support member is configured to be attached to the first pipeline section 24, and the holding member is configured to receive a second pipeline section 26 that is different from the first pipeline section 24.

[0124] The first pipeline section may be referred to as the main pipeline section, and the second pipeline section may be referred to as the auxiliary pipeline section.

[0125] In an example, the support member is configured to be attached to a support structure, such as a structural member of a fuselage or a support bracket for mounting facilities and equipment.

[0126] In an example, as Figure 3 and Figure 4 shown in the options, the support member and the holding member are provided as separate members that are configured to be connected to each other in a releasable manner.

[0127] In an example, the support member and the holding member can be connected to each other by a releasable connector.

[0128] In an example, as Figure 4 shown, the first pipeline section 24 includes a vacuum pipeline. At least one second pipeline section 26 includes at least one water hose.

[0129] In an example, at least one of the at least one second pipeline brackets allows relative movement of the second pipeline section along the main extension direction of the second pipeline section.

[0130] Figure 5 An example of a modular pipeline assembly with a fixed mount 54 for the second pipeline section 24 is shown in an exploded view. The base portion 56 encloses a space 58 for receiving the first pipeline section 24. The upper portion 60 provides a space 62 for receiving the second pipeline section 26. The covering member 64 is removable for arranging and then clamping or holding the second pipeline section 26.

[0131] Figure 6 An example of Figure 5 is shown in an installed view, in which the second pipeline section 26 is held in a fixed manner.

[0132] As an option, the abutting portion 66 is provided as a joint for engaging with an installation tool (see also Figures 13 to 15 ).

[0133] Figure 5 and Figure 6 The fixed mounts can be arranged along the pipeline section in a combined or mixed manner with the Figure 3 and Figure 4 movable mounts.

[0134] Figure 7 Another example of a modular pipeline assembly is shown in a top view. A first pipeline section 24 is provided, and the first pipeline section 24 is mounted to a base structure 68 by a first pipeline bracket 70. In addition, a second pipeline section 26 is mounted to the first pipeline section 24 by a second pipeline bracket 72. At least some of the second pipeline brackets in the second pipeline bracket 72 are provided as Figure 3 and Figure 4Example of a movable mounting. As indicated, the second pipeline section 26 can thus be deformed during operation, such as forming a bend, while the retaining bracket allows such movement.

[0135] Such a bend is indicated in the middle part. Due to the circumferential sliding mounting of the second pipeline section 26, the bend of the second pipeline section is arranged close to the first pipeline section 24, resulting in a compact and thus less space-consuming manner. Thus, the slack of the second pipeline is set in a space-controlled manner. If the second pipeline section 26 is further extended, the bend can increase. In the case of a small length difference, the bend can be easily reduced. During the change of the length difference, a firm retaining member of the second pipeline section is provided. The slack of the pipeline is thus controlled.

[0136] Figure 8a Another example of a modular pipeline assembly including a first pipeline section 24 and a second pipeline section 26 is shown in a side view. Figure 8b A schematic cross-sectional view of the modular pipeline assembly along Figure 8a is shown.

[0137] As shown, the first pipeline section 24 is installed via a plurality of first pipeline brackets 74. The second pipeline section 26 is installed via a plurality of second pipeline brackets 76. Some of the second pipeline brackets 76 in the second pipeline brackets are provided as second pipeline brackets 76' installed in a movable manner, while other second pipeline brackets are provided as immovable second pipeline brackets 76". The second pipeline bracket 76' installed in a movable manner allows the formation of a bend, for example for length difference compensation. The bend can be formed in the circumferential direction, as indicated in the cross-section in Figure 8b below, and is also shown as an angle 78.

[0138] In Figure 8a and Figure 8b a coordinate reference having axes x, y and z is indicated, for example a coordinate reference of a scheme related to or representing the space axes of an aircraft. In addition, values of displacement ("disp.") and rotation ("rot.") about the longitudinal axis of the first pipeline are indicated.

[0139] In an option, the second pipeline section is arranged above the first pipeline section during installation. In another option, the second pipeline section is arranged on the lateral side of the first pipeline section. In yet another option, the position is selected as desired and can be changed according to the available space. In yet another option, the position of the second pipeline section relative to the first pipeline section changes along the extent of the pipeline section.

[0140] The movable mountings of the second pipeline section allow relative deformation of the second pipeline section. For example, the (rotational) angle increases in the case of compression and decreases in the case of expansion.

[0141] Figure 9 The enlarged part of the modular pipeline assembly is shown in the upper part and Figure 8a the enlarged part of the corresponding cross-section is shown in the lower part. Figure 8b

[0142] Figure 10 Another example of a modular pipeline assembly is shown, in which the second pipeline section 26 is mounted to the first pipeline section 24 and is also mounted to the structural member 80 of the aircraft by a second pipeline bracket 76a designed for mounting to the structural member, while still allowing relative movement of the second pipeline section. Such mounting can be applied in a matching manner with respect to the optimized distance for mounting and holding the second pipeline section at the available positions of the structural member.

[0143] As an option, two or even more second pipeline brackets 76b can also be provided on the first pipeline section 24. For example, several upper components 44b can be held by a common base component 40b.

[0144] Figure 11 A schematic top view of an aircraft 200 including a fuselage 202 is shown, the fuselage 202 having at least one group 204 consisting of a cargo space and a cabin space. In addition, a mounting device 206 is provided in the fuselage. The mounting device includes at least one example of a modular pipeline assembly 10 according to one of the foregoing examples.

[0145] In an example, the aircraft includes a fuselage having an internal space and at least one modular pipeline assembly according to one of the foregoing examples.

[0146] As an advantage, the holding bracket allows the deformation of the bend in the second pipeline section in the circumferential direction of the first pipeline section. As an advantage, the holding bracket allows movement into the bracket rather than movement between the bracket and the first pipeline section. As an advantage, the holding bracket allows simplified installation due to the possibility of temporarily locking the movable behavior. As an advantage, the holding bracket allows a reduced space envelope due to defining the movement of the second pipeline section around the first pipeline section (neutral position for mounting, minimum deflection, and maximum deflection). As an advantage, the holding bracket provides a means for industrializing the concept of the modular pipeline assembly. As an advantage, the holding bracket allows a reduction in the number of joining brackets required in the modular pipeline assembly, for example assuming the use of a combined fixing bracket for the first pipeline and the second pipeline.

[0147] Figure 12 ​Shows the basic steps of an example of a method 300 for installing a first pipeline section and at least one second pipeline section in an aircraft fuselage. The method 300 includes the following steps:

[0148] - Attach 302 a first pipeline section having a first diameter to a structural component of the fuselage via a first pipeline bracket, the first pipeline bracket including a first receiving space designed to hold the first pipeline section and a first support portion for attaching the first pipeline bracket to the structural component; and

[0149] - Attach 304 at least one second pipeline section having a second diameter to the first pipeline section via a second pipeline bracket, the second pipeline bracket including a second receiving space designed to hold the at least one second pipeline section and a second support portion for attaching the second pipeline bracket to the first pipeline section.

[0150] The at least one second pipeline section includes a higher flexibility compared to the first pipeline section. In addition, the at least one second pipeline section is attached to the first pipeline section via a plurality of second pipeline brackets, the plurality of second pipeline brackets being arranged at a distance from the first pipeline bracket and independent of the first pipeline bracket.

[0151] In an example of the method, the second pipeline is installed with a base bend, i.e., a base deflection relative to a straight pipeline, to ensure that the tension acting on the pipeline can be compensated by a movable holder of the bracket.

[0152] In an example of the method, the second pipeline bracket allows the installation of the pipeline in a predetermined installation position.

[0153] Figure 13 Shows a tool 400 for attaching a holding bracket according to one of the above examples to an installation surface having at least a partially circular installation profile. The tool 400 includes a first engagement portion 402 for releasably engaging a connection engagement portion of the holding bracket and a second engagement portion 404 for temporarily engaging a measuring device 406 (see Figure 14 ). When engaging with the measuring device 406, the measuring device 406 provides information about the angular relationship between the holding bracket and the installation surface.

[0154] Figure 14 Shows the Figure 13 tool in the case where the modular pipeline assembly is in the process of being installed. The first engagement portion 402 of the tool 400 includes two arms 408 having end contact surfaces for engaging or abutting against an installation bracket 410. The installation bracket 410 includes a matching stop or engagement protrusion 412.

[0155] Figure 15 Shows Figure 14Another view of the tool. By rotating the tool 400 around the first pipeline section 24, the bracket 410 can be rotated in a convenient manner to achieve proper adjustment of the bracket 410. Once aligned, the screw 414 can be tightened.

[0156] The tool 400 is adapted to adjust the bracket to the angular position of the bracket during installation for achieving a desired centered position. The tool allows the bracket to rotate, for example, when placed on a circular base in the form of the first pipeline section, before the base member of the bracket is fixed in the angular position of the bracket.

[0157] The tool 400 for installation can also be referred to as an installation tool. The measuring device 406 is preferably a leveling device, such as a spirit level. In an option, a distance sensing device is also provided.

[0158] In an option, the method for installation includes the application of an example of the tool 400 for installation to provide measurement of the relative rotational position of the second pipeline bracket.

[0159] In an example, the tool 400 is also provided with a data interface for providing measurement data to a documentation unit.

[0160] In an example, the tool 400 is provided with two clamping arms configured to engage with two protrusions of the holding bracket. The two clamping arms are also configured to allow rotational alignment of the holding bracket when engaged with the pipeline to which it is mounted, i.e., when engaged with its mounted pipeline.

[0161] In an option, the installation tool 400 is configured to align the first pipeline bracket.

[0162] In an example, the measuring device, particularly the leveling device, is fixedly engaged with the second joint.

[0163] Advantages are achieved by implementing the above-described design concept for the new series of brackets for modular pipeline components in combination with a method for installation that is tailored to the bends in the second pipeline section oriented in the circumferential direction. According to one aspect, the mechanical load-bearing member between the second pipeline section and the first pipeline section is arranged such that it enables controlled deformation of the second pipeline section in the bend. A bend is required, for example, to compensate for a length difference. Relative movement between the first pipeline section and the second pipeline section can occur for various reasons, such as due to different coefficients of thermal expansion between the first pipeline section and the second pipeline section, such as different material properties, flexible couplings in the first pipeline section that can compensate for deformations in the longitudinal and angular directions, different temperatures of the first pipeline section and the second pipeline section, different pressure conditions in the first pipeline section compared to the second pipeline section, for example, the presence of a positive pressure in the second pipeline section that has an opposite effect on any flexible element or the second pipeline section itself while there is a negative pressure in the first pipeline section that tends to have a pushing effect on any flexible element, and different external mechanical loads introduced into the first pipeline section or the second pipeline section. The described product series includes new brackets. In an example, the bracket is provided with an integral rotary mechanism. To set a circumferential bend, one or more engaging bracket clips in the engaging bracket deflect an angular increment, for example 45°, during installation. Additionally, there are brackets serving as fixed load-bearing members at the left and right ends of one or more deflectable brackets. The brackets pre-installed at incremental angles allow a certain rotational movement after installation. The range of rotation is limited via end stops, for example, limited to an angle of + / - 30°. If the first pipeline section is stretched in the longitudinal direction, a traction force is generated between the two fixed load-bearing members in the second pipeline section. This causes the movable bracket to rotate towards an angle with a smaller deflection compared to the initial installation position. If the first pipeline section is compressed in the longitudinal direction, a compressive force is generated between the two fixed load-bearing members in the second pipeline section. This causes the bracket to rotate towards an angle with a larger deflection compared to the initial installation position. In an option, the rotational movement is (additionally or alternatively) achieved in the joint between the first pipeline section and the bracket, while the bracket itself is designed to be rigid. In an option, the bracket includes a base module and a top module, and a movable joint is formed between the first pipeline assembly and the second pipeline assembly. The base module is fixed to the first pipeline section, for example, all rotation and displacement are blocked, and the top module is fixed to the second pipeline section, for example, rotation about the longitudinal axis is free, displacement in the longitudinal direction is free, and all other degrees of freedom are blocked. A motion element or an elastic element is incorporated into the bracket between the top module and the base module. This allows movement of the second pipeline section in the circumferential direction around the first pipeline section. Additionally, the motion element or the elastic element includes an element that partially blocks the movement to simplify installation at a defined position.The end stops control the movement of the top module relative to the base module and limit the area of deflection. An exemplary design for such a bracket provides rotational movement via a sliding mechanism between the base module and the top module. The end stops are positioned at each end of the sliding mechanism to limit the maximum and minimum deflections. Means are provided for preventing rotational movement via a clamping pin in a neutral position.

[0164] In an option, a combined bracket for a first pipeline assembly and a second pipeline assembly is provided. This concept combines the design of the first pipeline bracket with the possibility of also serving as the second pipeline bracket. For example, a so-called omega-shaped clamp for mounting a vacuum channel to an aircraft structure is equipped with additional means for mounting a water hose. This additional support means for mounting the second pipeline section to the first pipeline bracket can be connected permanently or removably. This reduces the number of brackets required.

[0165] In an option, a mechanical load-bearing member is provided on the one hand between the bracket and the first pipeline section and on the other hand between the bracket and the second pipeline section, which can be envisaged for the new bracket introduced above.

[0166] In a first variant, a fixed-fixed bracket is provided:

[0167] - A fixed connection via the bracket between the first pipeline section and the second pipeline section. This variant provides, for example, zero degrees of freedom of movement for the installed second pipeline section.

[0168] In a second variant, a fixed-movable bracket is provided:

[0169] - A fixed connection between the bracket and the first pipeline section. This provides, for example, zero degrees of freedom of movement for the installed first pipeline section.

[0170] - The second pipeline section is fixed to prevent movement in the y and z directions, but can move in the x direction. This variant provides, for example, one degree of freedom of movement for the installed second pipeline section.

[0171] In a third variant, a fixed-rotatable bracket is provided:

[0172] - A fixed connection between the bracket and the first pipeline section. This provides, for example, zero degrees of freedom of movement for the installed first pipeline section.

[0173] - The longitudinal and rotational movements of the second pipeline section in the bracket are free, and all other degrees of freedom are blocked. This provides, for example, two degrees of freedom of movement for the installed second pipeline section.

[0174] - The bracket has a rotation mechanism included such that the second pipeline section can rotate around the first pipeline section. This provides, for example, a degree of freedom of movement with respect to the installed second pipeline section.

[0175] - The rotation mechanism can be locked or unlocked.

[0176] Among the options, it is not necessary to directly mount all brackets on top of the first pipeline section. Instead, it is also conceivable that some of the brackets are attached to structural elements. In areas where there is no available structure, such as in the middle of a frame cabin, the brackets can be mounted to the first pipeline section.

[0177] According to another aspect, a tool is also provided for positioning the bracket on the first pipeline section or generally positioning the bracket relative to a structural element. The tool has an engagement portion that engages with the bracket. The bracket and the tool are designed such that the combination is only possible in a defined manner. Thus, a special engagement element is designed to be located between the tool and the bracket. This concept can be used for all components of a new series of brackets. The tool includes the following functions: The measuring device can be a digital protractor for adjusting the rotation of the bracket, and this digital protractor is mounted on the top of the first pipeline section in a piggyback manner. The tool can be a transmitter / receiver combination for determining the position of the bracket relative to a reference system. There can be markers, reflectors, or the like incorporated into the bracket to locate the bracket by means of an external positioning system. The tool can be used for assembling the engagement brackets in an aircraft fuselage or for pre-assembling modules (such as triangular modules or floor modules) outside the aircraft fuselage. In addition, the tool can be used for maintenance when the aircraft is in service.

[0178] It must be noted that the embodiments of the present invention are described with reference to different subjects. In particular, some embodiments are described with reference to method-type claims, while other embodiments are described with reference to apparatus-type claims. However, those skilled in the art will understand from the above description and the following description that, unless otherwise indicated, any combination between features related to different subjects is also considered to be disclosed by this application, in addition to any combination of features belonging to one type of subject. However, all features can be combined to provide a synergistic effect that is more than a simple superposition of the features.

[0179] Although the present invention has been illustrated and described in detail in the drawings and the foregoing description, such illustration and description are considered to be illustrative or exemplary rather than restrictive. The present invention is not limited to the disclosed embodiments. By studying the drawings, the disclosure, and the dependent claims, those skilled in the art can understand and implement other variations of the disclosed embodiments when implementing the claimed invention.

[0180] In a claim, the word "comprising" does not exclude other elements or steps, and the indefinite article "a" or "an" does not exclude a plurality. A single processor or other unit may implement the functions of several items recited in the claim. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used advantageously. Any reference signs in the claims shall not be construed as limiting the scope.

Claims

1. A retaining bracket (10) for a pipeline assembly in an aircraft fuselage, the bracket comprising: - A receiving space (12); And - A supporting portion (14); Wherein, the supporting portion comprises: - A retaining member (16), the retaining member (16) at least partially enclosing the receiving space designed to receive a pipeline section of the assembly, and the retaining member being designed to hold the pipeline section; and - A supporting member (18), the supporting member (18) being configured to fixedly attach the retaining member to a support; Wherein, the retaining member is attached to the supporting member via a movable attachment, the movable attachment being configured to provide a predetermined relative movement of the retaining member relative to the supporting member in the installed state of the pipeline assembly.

2. The holding bracket according to claim 1, wherein The retaining member of the supporting portion is adapted to slide and / or rotate relative to the supporting member.

3. The retaining bracket according to claim 1 or 2, wherein The supporting member is configured to be attached to a first pipeline section, and the retaining member is configured to receive a second pipeline section different from the first pipeline section.

4. The retaining bracket according to claim 1, 2 or 3, wherein, The supporting member and the retaining member are provided as separate components that can be detachably connected to each other.

5. The retaining bracket according to one of the preceding claims, wherein, For the installation of the pipeline, the retaining member can be fixed relative to the supporting member in a predetermined installation position.

6. A modular pipeline assembly (22) for installation in an aircraft fuselage, the assembly comprising: - A first pipeline section (24); - At least one second pipeline section (26); - A set of first pipeline brackets; And - A set of second pipeline brackets (28); Wherein, the first pipeline bracket includes a first receiving space designed to hold the first pipeline section and a first supporting portion for attaching the first pipeline bracket to a structural component of the fuselage; Wherein, the second pipeline bracket includes a second receiving space (30) designed to hold the at least one second pipeline section and a second supporting portion (32) for attaching the second pipeline bracket to a support; Wherein, the set of second pipeline brackets includes at least one retaining bracket according to one of the preceding claims; and Wherein, the at least one second pipeline section is attached to the first pipeline section by a plurality of second pipeline brackets, the plurality of second pipeline brackets being at least partially arranged at a distance from the first pipeline bracket and independent of the first pipeline bracket.

7. The modular pipeline assembly according to claim 6, wherein, The second supporting portion is adapted to move relative to the first pipeline section to compensate for the expansion movement and / or compression movement of the at least one second pipeline section.

8. The modular pipeline assembly according to claim 6 or 7, wherein, The second supporting portion is configured to attach the second pipeline bracket to the first pipeline section.

9. The modular pipeline assembly according to one of claims 6 to 8, wherein, The second supporting portion is configured to attach the second pipeline bracket to a support structure.

10. The modular pipeline assembly according to one of claims 6 to 9, wherein, The at least one second pipeline section includes the same flexibility or higher flexibility compared to the first pipeline section.

11. The modular pipeline assembly according to one of claims 6 to 10, wherein, The at least one second pipeline section includes at least one bend located in an overlapping area overlapping with one of the first pipeline brackets in the first pipeline brackets and / or another component.

12. The modular pipeline assembly according to one of claims 6 to 11, Among them, wherein the first pipeline section includes a vacuum pipeline; and wherein the at least one second pipeline section includes at least one water hose.

13. An aircraft (200), comprising: - a fuselage (202) having at least one set (204) consisting of a cargo space and a cabin space; and - a mounting device (206) located in the fuselage; wherein the mounting device includes at least one modular pipeline assembly (10) according to one of claims 1 to 5.

14. A method (300) for installing a first pipeline section and at least one second pipeline section in the fuselage of an aircraft, comprising: - attaching (302) the first pipeline section having a first diameter to a structural component of the fuselage via a first pipeline bracket, the first pipeline bracket including a first receiving space designed to hold the first pipeline section and a first support portion for attaching the first pipeline bracket to the structural component; and - attaching (304) the at least one second pipeline section having a second diameter to the first pipeline section via a second pipeline bracket, the second pipeline bracket including a second receiving space designed to hold the at least one second pipeline section and a second support portion for attaching the second pipeline bracket to the first pipeline section; wherein the at least one second pipeline section has a higher flexibility compared to the first pipeline section; and wherein the at least one second pipeline section is attached to the first pipeline section via a plurality of second pipeline brackets, the plurality of second pipeline brackets being arranged at a distance from the first pipeline bracket and independent of the first pipeline bracket.

15. A tool (400) for installing a holding bracket according to one of claims 1 to 5 onto a mounting surface having at least a partially circular mounting profile, the tool comprising: - a first engagement portion (402) for releasably engaging with a connection engagement portion of the holding bracket; and - a second engagement portion (404) for temporarily engaging with a measuring device (406); wherein, when engaging with the measuring device, the measuring device provides information about the angular relationship between the holding bracket and the mounting surface.

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