Stepless adjustable compensation type current limiting device and aviation environmental control pipeline

Abstract

The utility model provides a kind of stepless adjustable compensation type current limiting device and aviation environmental control pipeline, it is related to aviation environmental control pipeline field, the device includes pipe body, current limiting ring, adjusting flange and adjusting locking piece, pipe body has the corrugated compensation pipe section of axial deformation, current limiting ring is fixed on the inner wall of corrugated compensation pipe section, and located in the lumen of pipe body;Adjusting flange is fixed on corrugated compensation pipe section, and the section for fixing current limiting ring of corrugated compensation pipe section is located between two adjusting flanges, adjusting locking piece is fixedly connected two adjusting flanges, and the spacing between two adjusting flanges can be adjusted, so that current limiting ring is telescopic along the radial direction of pipe body.Adjusting locking piece adjusts the spacing between two adjusting flanges, makes corrugated compensation pipe section axial deformation, drives current limiting ring to be telescopic along the radial direction of pipe body and deforms, changes the inner diameter of pipe body, without disassembling pipeline, can be completed in situ, structure simplifies, adjustment is convenient, realizes stepless regulation to flow, and flexibility is significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of aviation environmental control pipeline technology, and in particular to a steplessly adjustable compensation current limiting device and aviation environmental control pipeline. Background Technology

[0002] In the civil aviation industry, for the same aircraft model, different seating classes have different airflow requirements for different locations within the cabin. However, the design of the environmental control system generally only needs to consider a basic model, with adjustments made by adding fixed flow-limiting rings. The function of the flow-limiting device is to redistribute the total airflow provided by the environmental control system to various areas according to the actual needs of a specific cabin layout. This ensures sufficient airflow in critical areas (such as the front premium seats) while preventing excessive airflow in non-critical or low-density areas (such as certain positions in the rear cabin or specific galleys), which could lead to waste or noise. Even so, the resulting configuration management costs and difficulties are significant.

[0003] The applicant has discovered that the prior art has at least the following technical problems: the flow limiting device in the pipeline in the prior art has a complex structure, requires the installation of many additional structures to regulate the flow in the pipeline, and is cumbersome to install due to the influence of the direction and layout of the pipeline in the environmental control system, making it difficult to flexibly regulate the flow in the pipeline and inconvenient to use. Utility Model Content

[0004] The purpose of this utility model is to provide a steplessly adjustable compensation-type flow limiting device and an aviation environmental control pipeline, so as to solve the technical problems of cumbersome installation, inflexible flow adjustment, and inconvenience of use of existing flow limiting devices in aviation environmental control pipelines. The various technical effects of the preferred technical solutions provided by this utility model are detailed below.

[0005] To achieve the above objectives, the present invention provides the following technical solution: The steplessly adjustable compensation-type flow limiting device provided by this utility model includes a pipe body, a flow limiting ring, an adjusting flange, and an adjusting locking component, wherein: The pipe body has a corrugated compensation pipe section, and the flow-limiting ring is fixed on the inner wall of the corrugated compensation pipe section and located in the cavity of the pipe body; The adjusting flange is fixed to the corrugated compensating pipe section. The section of the corrugated compensating pipe section used to fix the flow limiting ring is located between two adjacent adjusting flanges. The adjusting locking member is fixedly connected to two adjacent adjusting flanges and can adjust the distance between the two adjusting flanges, thereby allowing the flow limiting ring to expand and contract radially along the pipe body.

[0006] Preferably, the corrugated compensating pipe includes multiple convex rings and troughs, and the convex rings and troughs are arranged alternately along the axial direction of the pipe body; The flow-limiting ring is fixed to the inner wall of at least one of the convex rings, and the two adjacent adjusting flanges are located at the troughs at opposite ends of the convex rings.

[0007] Preferably, the radial cross-section of the flow-limiting ring is an arc-shaped structure, and the flow-limiting ring and the convex ring connected to it are integrally formed, with the radial cross-section of the combined structure being circular, elliptical, or irregularly annular.

[0008] Preferably, each of the two adjacent adjusting flanges is provided with a through hole at a corresponding position, and the through hole is located at the end corner of the adjusting flange; The adjusting locking member passes through the corresponding through hole of the adjacent adjusting flange and fixes the two adjacent adjusting flanges together.

[0009] Preferably, the number of the adjusting locking elements is at least two, and they are distributed at different end corners of the adjusting flange.

[0010] Preferably, the adjusting locking element includes a bolt and a nut, wherein: The bolt passes through the corresponding through hole of the adjacent adjusting flange and is threadedly connected to the nut. Tightening the nut can adjust the distance between the two adjusting flanges.

[0011] Preferably, the tube body has rolling waves at its opposite ends.

[0012] Preferably, the adjusting flange is provided with a central hole, and the trough of the corrugated compensation pipe section passes through the central hole and is fixedly connected to the hole wall of the central hole.

[0013] Preferably, the diameter of the central hole is smaller than the outer diameter of the convex ring.

[0014] This utility model provides an aviation environmental control pipeline, including the aforementioned stepless adjustable compensation current limiting device.

[0015] The infinitely adjustable compensation flow limiting device and aviation environmental control pipeline provided by this utility model have the following advantages compared with the prior art: By adjusting the distance between two adjusting flanges using the adjusting locking element, the corrugated compensation pipe section is driven to undergo axial deformation, which in turn drives the flow limiting ring to expand and contract radially along the pipe body, thereby changing the flow inner diameter of the pipe cavity. This can be done online and in-situ without disassembling the pipeline, simplifying the structure and making adjustment convenient. The flow diameter of the pipe body can be continuously and smoothly changed by adjusting the locking element, achieving infinitely adjustable flow rate. Compared with replacing a fixed flow limiting ring, this significantly improves flexibility. One device can adapt to multiple flow requirements, eliminating the need to stock multiple specifications of spare parts for different configurations, significantly reducing the cost of spare parts types and configuration management. This device integrates pipeline compensation and flow regulation functions, reducing the number of components, helping to improve the overall reliability of the system and achieve lightweight design. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the external structure of a continuously adjustable compensation current limiting device. Figure 2 This is a schematic diagram of the internal structure of a continuously adjustable compensation current limiting device. Figure 3 This is a side view of a continuously adjustable compensation current limiting device; Figure 4 yes Figure 3 A schematic diagram of the cross-sectional structure at point BB.

[0018] In the diagram: 1. Pipe body; 2. Corrugated compensation pipe section; 21. Convex ring; 22. Corrugated trough; 3. Flow limiting ring; 4. Adjusting flange; 41. Center hole; 42. Through hole; 5. Adjusting locking element; 51. Bolt; 52. Nut; 6. Rolling corrugation. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] In the description of this utility model, it should be understood that the terms "center," "length," "width," "height," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and "side," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0021] This utility model provides a steplessly adjustable compensated flow limiting device, which enables convenient and continuous stepless adjustment of the internal fluid flow rate from outside the pipeline system. (See also...) Figures 1 to 4 The accompanying drawings together illustrate the structure of this embodiment.

[0022] The following is combined with Figures 1-4 The technical solution provided by this utility model will be described in more detail.

[0023] Example 1: like Figures 1-4 As shown, the steplessly adjustable compensation-type flow limiting device provided by this utility model includes a pipe body 1, a flow limiting ring 3, an adjusting flange 4, and an adjusting locking component 5. The pipe body 1 has an axially deformable corrugated compensation pipe section 2. The flow limiting ring 3 is fixed to the inner wall of the corrugated compensation pipe section 2 and located within the cavity of the pipe body 1. The adjusting flange 4 is fixed to the corrugated compensation pipe section 2. The section of the corrugated compensation pipe section 2 used to fix the flow limiting ring 3 is located between two adjacent adjusting flanges 4. The adjusting locking component 5 is fixedly connected to two adjacent adjusting flanges 4 and can adjust the distance between the two adjusting flanges 4, thereby allowing the flow limiting ring 3 to expand and contract radially along the pipe body 1.

[0024] See Figure 1 and Figure 2 , Figure 4 As shown, the tube body 1, as the main structure of the device, defines the channel through which the fluid passes. It is understandable that, in applications such as aerospace environmental control, the tube body 1 can be made of corrosion-resistant and high / low temperature-resistant metal materials to adapt to harsh working environments.

[0025] The overall shape of the pipe body 1 is a section of pipe, and its two ends can be designed to match the connection form of an external piping system. In this embodiment, as a preferred connection method, both ends of the pipe body 1 are provided with rolled corrugations 6. The rolled corrugations 6 are annular protrusions or grooves formed at the pipe ends through a rolling process. As a standard connection interface in the field of aerospace conduits, they can be used with standard clamp-type pipe fittings to achieve a quick, reliable, and detachable connection. Of course, in other application scenarios, the two ends of the pipe body 1 can also adopt other connection methods well known to those skilled in the art, such as flange connections, threaded connections, or direct welding.

[0026] By operating the adjusting locking element 5, the operator can precisely control the two adjusting flanges 4 to move closer or further apart from each other from outside the device, thereby achieving axial compression or stretching of the corrugated compensation pipe section 2, and thus achieving the deformation of the limiting ring in the radial direction of the pipe body 1.

[0027] In this embodiment, see Figure 1 and Figure 2 , Figure 4As shown, the corrugated compensating pipe section 2 can be compressed or stretched in the axial direction of the pipe body. As an optional embodiment, the corrugated compensating pipe includes a plurality of convex rings 21 and troughs 22, which are arranged alternately along the axial direction of the pipe body 1; the flow-limiting ring 3 is fixed to the inner wall of at least one convex ring 21, and two adjacent adjusting flanges 4 are located at the troughs 22 at opposite ends of the convex ring 21.

[0028] See Figure 1 , Figure 2 and Figure 4 The convex ring 21 is a radially protruding annular corrugated portion, while the trough 22 is a radially recessed annular corrugated portion. This structure allows the corrugated compensation pipe section 2 to maintain pipeline integrity and sealing while possessing axial expansion and contraction elasticity.

[0029] See Figure 2 and Figure 4 As shown, the flow-limiting ring 3 is disposed inside the cavity of the pipe body 1 to limit the flow rate of fluid passing through the device by changing its own flow port diameter.

[0030] In the technical solution of this application, the flow-limiting ring 3 is firmly fixed to the inner wall of the corrugated compensating pipe section 2. As a preferred arrangement, the flow-limiting ring 3 is fixed at or near the apex of the inner wall of one of the convex rings 21. This fixing can be achieved in various ways, including but not limited to high-precision circumferential welding, brazing, adhesive bonding, or interference fit.

[0031] As a preferred implementation, to improve the overall integrity and reliability of the structure and avoid stress concentration or potential defects introduced by processes such as welding, the flow-limiting ring 3 can be integrally formed with the convex ring 21. For example, during the manufacturing of a bellows, an annular flow-limiting structure with a predetermined thickness and shape, protruding radially inward, can be directly formed on the inner wall of a certain convex ring 21 using a mold and hydraulic or mechanical bulging process. This structure is the integrally formed flow-limiting ring 3. This integrally formed structure not only simplifies the manufacturing process but also significantly enhances the connection strength between the flow-limiting ring 3 and the pipe body 1.

[0032] For details, see Figure 4 As shown, the radial cross-section of the flow-limiting ring 3 is an arc-shaped structure, and the radial cross-section of the structure in which the flow-limiting ring 3 and the convex ring 21 cooperate is circular, elliptical, or irregularly annular.

[0033] The aforementioned matching structure of the flow-limiting ring 3 and the convex ring allows the diameter of the convex ring 21 to increase when the corrugated compensation pipe section is subjected to axial compression. This increases the diameter of the convex ring 21, causing the flow-limiting ring 3 to deform accordingly through the connection, thereby achieving the purpose of regulating the flow rate.

[0034] The adjusting flange 4, as a force-applying component, functions to evenly transmit the force applied by the adjusting locking member 5 to the corrugated compensating pipe section 2. The installation position of the two adjusting flanges 4 is crucial for efficient force transmission. In this embodiment, the two adjusting flanges 4 are respectively fixed to two adjacent troughs 22 on opposite sides of the convex ring 21 where the flow-limiting ring 3 is located.

[0035] See Figure 4 The adjusting flange 4 is an annular disc structure with a central hole 41. The trough 22 of the corrugated compensation pipe section 2 passes through the central hole 41 and is fixedly connected to the hole wall of the central hole 41.

[0036] See Figure 4 The diameter of the center hole 41 of the adjusting flange 4 is smaller than the outer diameter of the convex ring 21 and matches the outer diameter of the trough 22. It can be fixed by welding or mechanical clamping.

[0037] It should be noted that the reason for fixing the adjusting flange 4 to the trough 22 is that, on the one hand, the trough 22, as a part of the bellows with a small radial dimension and relatively rigid structure, is suitable as a force bearing point; on the other hand, arranging it on both sides of the target convex ring 21 can ensure that the applied axial force can act most effectively on the pipe section containing the flow-limiting ring 3, thereby causing it to undergo the expected deformation.

[0038] As an alternative implementation, see [link to implementation details]. Figure 2 Each of two adjacent adjusting flanges 4 has a corresponding through hole 42 located at an end corner of the adjusting flange 4. The adjusting locking element 5 passes through the corresponding through hole 42 of the adjacent adjusting flange 4 and fixes the two adjacent adjusting flanges 4 together. There are at least two adjusting locking elements 5, which are distributed at different end corners of the adjusting flange 4.

[0039] The number of adjusting locking elements 5 is the same as the number of through holes 42. As an optional embodiment, see [link to embodiment]. Figure 4 As shown, the adjusting locking component 5 includes a bolt 51 and a nut 52, wherein: the bolt 51 passes through the corresponding through hole 42 of the adjacent adjusting flange 4 and is threadedly connected to the nut 52, and turning the nut 52 can adjust the distance between the two adjusting flanges 4.

[0040] See Figure 4 As shown, the shank of bolt 51 passes sequentially through the through hole 42 on one adjusting flange 4 and the corresponding through hole 42 on the other adjusting flange 4, and then the two adjusting flanges 4 are connected by tightening the nut 52. By evenly distributing multiple adjusting locking elements 5 along the circumference, it can be ensured that the force applied to the two adjusting flanges 4 is evenly distributed during the adjustment process, avoiding flange tilting or excessive local stress, thereby ensuring that the corrugated compensation pipe section 2 deforms smoothly and coaxially.

[0041] The working process and flow regulation method of the device in this embodiment will be described in detail below. The core of this method is: by operating the adjusting locking part 5 to change the axial distance between the two adjusting flanges 4, the axially deformable corrugated compensation pipe section 2 is driven to undergo axial deformation, which in turn drives the flow limiting ring 3 fixed to its inner wall to undergo radial deformation, and finally realizes the change of the flow diameter of the pipe body 1.

[0042] See Figures 1-4 As shown, during operation, tools such as wrenches can be used to simultaneously and gradually tighten the nuts 52 of each adjusting locking element 5 distributed around the adjusting flange 4 clockwise. Tightening the nuts 52 will shorten the distance between the bolt head 51 and the nut 52, thereby applying an axial force that pulls the two adjusting flanges 4 closer together. Under this pulling force, the two adjusting flanges 4 will move closer to each other along the axis of the pipe body 1.

[0043] See Figures 1-4 As shown, since the two adjusting flanges 4 are fixed on the troughs 22 on both sides of the target convex ring 21, the reduction in the flange spacing will directly cause this section of the corrugated compensation pipe 2 to be axially compressed. According to the mechanical properties of the bellows, when it is axially compressed, the diameter of its convex ring 21 will increase, that is, it will expand radially outward, while the diameter of the trough 22 will decrease. Since the flow-limiting ring 3 is firmly fixed to the inner wall of the target convex ring 21, when the convex ring 21 expands radially outward, it will cause the flow-limiting ring 3 to deform accordingly through the connection. Specifically, as a ring structure, when the inner wall of the convex ring 21 to which it is attached "opens" outward, its ring material is stretched. In order to maintain the continuity of the material with the increase in circumference, the flow-limiting ring 3 will inevitably undergo radial inward contraction deformation. This radial contraction leads to a reduction in the diameter of the central flow hole of the flow-limiting ring 3, a reduction in the flow port diameter of the pipe body 1, and an increase in the local resistance of the fluid passing through this point, thereby achieving the purpose of limiting and reducing the fluid flow rate in the pipeline.

[0044] See Figures 1-4As shown, conversely, the operator can use tools to simultaneously and gradually loosen the nuts 52 of each adjusting locking element 5 counterclockwise. Loosening the nuts 52 will reduce or eliminate the tension force on the two adjusting flanges 4. Under the restoring force of the corrugated compensation pipe section 2's own elasticity, or with the assistance of the fluid pressure in the pipeline, or by using a double nut 52 structure on the adjusting locking element 5 for reverse pushing, the two adjusting flanges 4 can be moved away from each other, increasing their axial distance, and the corrugated compensation pipe section 2 between the two adjusting flanges 4 is axially stretched. When the corrugated compensation pipe section 2 is axially stretched, the diameter of its convex ring 21 will decrease, that is, it will contract radially inward. Similarly, since the flow-limiting ring 3 is fixed to the inner wall of the convex ring 21, the radial contraction of the convex ring 21 will drive the flow-limiting ring 3 to expand radially, increasing the flow port diameter of the pipe body 1, reducing the local flow resistance of the fluid, thereby achieving the purpose of increasing the fluid flow rate in the pipeline.

[0045] See Figures 1-4 As shown, since the adjustment process of the adjusting locking element 5 (such as the structure of bolt 51 and nut 52) ​​is continuous, the distance between the two adjusting flanges 4 can be continuously varied from a predetermined range. Correspondingly, this continuous axial distance change, through the aforementioned mechanical transmission and deformation conversion mechanism, is ultimately transformed into a continuous and smooth change in the flow diameter of the flow-limiting ring 3. Thus, the device of this embodiment can achieve stepless adjustment of fluid flow rate, while also possessing the advantages of high adjustment accuracy and good flexibility. The entire adjustment process is completed outside the pipeline, without the need to disassemble the pipeline or replace any internal parts, realizing online, in-situ adjustment, which greatly facilitates on-site operation and maintenance.

[0046] Example 2: This embodiment provides an aviation environmental control pipeline, including the aforementioned steplessly adjustable compensation current limiting device.

[0047] The pipe body 1 is connected to the pipe body 1 through the above-mentioned rolling wave 6 structure, or it is used in conjunction with the clamp-type pipe joint to achieve a fast, reliable and detachable connection.

[0048] The aviation environmental control pipeline of this embodiment can adjust the flow diameter of the cavity without disassembling the pipeline. It can be completed online and in situ, with a simplified structure and convenient adjustment.

[0049] The specific features, structures, or characteristics described in this specification may be combined in any suitable manner in one or more embodiments or examples.

[0050] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0051] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A steplessly adjustable compensated current limiting device, characterized in that, Includes the pipe body, flow-limiting ring, adjusting flange, and adjusting locking components, among which: The pipe body has an axially deformable corrugated compensating pipe section, and the flow-limiting ring is fixed to the inner wall of the corrugated compensating pipe section and located in the cavity of the pipe body; The adjusting flange is fixed to the corrugated compensating pipe section. The section of the corrugated compensating pipe section used to fix the flow limiting ring is located between two adjacent adjusting flanges. The adjusting locking member is fixedly connected to two adjacent adjusting flanges and can adjust the distance between the two adjusting flanges, thereby allowing the flow limiting ring to expand and contract radially along the pipe body.

2. The steplessly adjustable compensation current limiting device according to claim 1, characterized in that, The corrugated compensating pipe includes multiple convex rings and troughs, and the convex rings and troughs are arranged alternately along the axial direction of the pipe body; The flow-limiting ring is fixed to the inner wall of at least one of the convex rings, and the two adjacent adjusting flanges are located at the troughs at opposite ends of the convex rings.

3. The steplessly adjustable compensation current limiting device according to claim 2, characterized in that, The radial cross-section of the current limiting ring is an arc-shaped structure, and the current limiting ring and the convex ring connected to it are integrally formed. The radial cross-section of the combined structure is circular, elliptical, or irregular ring.

4. The continuously adjustable compensated current limiting device according to claim 1, characterized in that, Each of the two adjacent adjusting flanges is provided with a through hole at a corresponding position, and the through hole is located at the end corner of the adjusting flange; The adjusting locking member passes through the corresponding through hole of the adjacent adjusting flange and fixes the two adjacent adjusting flanges together.

5. The steplessly adjustable compensated current limiting device according to claim 1 or 4, characterized in that, The number of adjusting locking elements is at least two, and they are distributed at different end corners of the adjusting flange.

6. The continuously adjustable compensated current limiting device according to claim 4, characterized in that, The adjusting locking component includes a bolt and a nut, wherein: The bolt passes through the corresponding through hole of the adjacent adjusting flange and is threadedly connected to the nut. Tightening the nut can adjust the distance between the two adjusting flanges.

7. The steplessly adjustable compensated current limiting device according to claim 1, characterized in that, Rolling waves are provided at opposite ends of the tube.

8. The steplessly adjustable compensation current limiting device according to claim 2, characterized in that, The adjusting flange is provided with a central hole, and the trough of the corrugated compensation pipe section passes through the central hole and is fixedly connected to the hole wall of the central hole.

9. The steplessly adjustable compensated current limiting device according to claim 8, characterized in that, The diameter of the central hole is smaller than the outer diameter of the convex ring.

10. An aviation environmental control pipeline, characterized in that, Includes the steplessly adjustable compensation current limiting device as described in any one of claims 1-9.

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