Thin-wall flame-retardant titanium alloy pipe

Abstract

The utility model relates to the technical field of titanium alloy pipes, in particular to a thin-wall flame-retardant titanium alloy pipe, which comprises an inner pipe body and is characterized in that a flame-retardant sheath is arranged on the outer side of the inner pipe body, a plurality of vibration reduction components are arranged on the outer wall of the inner pipe body, the vibration reduction components are connected with the flame-retardant sheath through plug-in components, and the plug-in components are connected with the flame-retardant sheath through the plug-in components. The vibration reduction assembly comprises a rubber strip, the section of the rubber strip is in a similar X shape, a plurality of pressure reduction grooves are formed in an inner cavity of the rubber strip at equal intervals, a plurality of elastic connecting belts are arranged at the forked positions of the inner side and the outer side of the rubber strip at equal intervals and fixedly connected with the forked positions, and the inner end of the rubber strip is fixedly connected with the outer wall of the inner pipe body. The flame-retardant pipeline has good flame-retardant capacity, local overheating of the outer wall of the pipeline due to friction is avoided, good vibration reduction capacity can be provided, and damage caused by the fact that high-frequency vibration generated in an engine acts on the inner pipe body is prevented.

Description

Technical Field

[0001] This utility model relates to the field of titanium alloy tube technology, specifically a thin-walled flame-retardant titanium alloy tube. Background Technology

[0002] Titanium alloy tube is a tubular structural component made of titanium alloy. Titanium alloy has many advantages such as low density, high specific strength, strong corrosion resistance, and good low and high temperature performance. Therefore, titanium alloy tube is widely used in aerospace, chemical, medical, marine engineering and other fields.

[0003] In the aerospace field, it can be used to manufacture aircraft engine parts, fuselage structural components, etc., which can effectively reduce the weight of aircraft and improve their performance; in the chemical industry, thanks to its excellent corrosion resistance, it can be used to transport various corrosive media and extend the service life of pipelines; in the medical field, it can be used to manufacture medical devices that can be implanted in the human body, such as artificial joints, which have good biocompatibility.

[0004] Titanium alloy tubes are widely used in the aviation field. When an aircraft encounters airflow during takeoff, landing, and flight, high-frequency vibrations are generated inside the engine. As a pipe connecting various components, titanium alloy tubes are prone to friction with surrounding components, leading to local overheating and friction damage on the outer wall of the pipe, which in turn affects its performance and structural integrity. Therefore, a thin-walled flame-retardant titanium alloy tube is proposed to address the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a thin-walled flame-retardant titanium alloy pipe with good flame-retardant ability, which avoids local overheating of the outer wall of the pipe due to friction, and provides good vibration damping ability to prevent high-frequency vibration inside the engine from causing friction damage between the pipe and surrounding components, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A thin-walled flame-retardant titanium alloy tube includes an inner tube body, characterized in that: a flame-retardant sheath is provided on the outer side of the inner tube body, and a plurality of vibration damping components are provided on the outer wall of the inner tube body. The vibration damping components are connected to the flame-retardant sheath through plug-in components. The vibration damping components include rubber strips, the cross-section of the rubber strips is arranged in an X-shape, and a plurality of pressure-reducing grooves are arranged at equal intervals in the inner cavity of the rubber strips. A plurality of elastic connecting strips are arranged at equal intervals and fixedly connected at the bifurcations on the inner and outer sides of the rubber strips. The inner end of the rubber strips is fixedly connected to the outer wall of the inner tube body.

[0008] As a further optimization of this utility model, the pressure relief groove is provided with pressure relief holes symmetrically on both sides, and an annular airbag is provided between the rubber strips, wherein the annular airbag is segmented.

[0009] As a further optimization of this utility model, each segment of the annular airbag is fixedly inserted into a pressure-reducing hole on an adjacent rubber strip, and each segment of the annular airbag is connected to a corresponding pressure-reducing groove through the pressure-reducing hole.

[0010] As a further optimization of this utility model, a gap is provided between the inner tube and the flame-retardant sheath, and the annular airbag is disposed in the gap and does not contact the inner tube or the flame-retardant sheath.

[0011] As a further optimization of this utility model, the elastic connecting bands and pressure-reducing grooves are equal in number and correspond in position, and the annular airbags are equal in number to the pressure-reducing grooves.

[0012] As a further optimization of this utility model, the plug-in assembly includes a dovetail insert, which is fixedly connected to the outer forked end of the rubber strip, and the end of the flame-retardant sheath is provided with several dovetail slots.

[0013] As a further optimization of this utility model, the dovetail slots and dovetail inserts are set in equal numbers, corresponding positions, and matching specifications.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In this invention, the inner tube can connect various components and transport media in the aircraft engine. The flame-retardant sheath can prevent localized overheating of the outer wall of the inner tube due to friction through its own flame-retardant ability. The vibration damping component can provide good vibration damping ability to prevent high-frequency vibrations generated inside the engine from acting on the inner tube and causing damage. The plug-in component can provide a convenient connection between the vibration damping component and the flame-retardant sheath, so as to facilitate installation and disassembly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present utility model. Figure 1 ;

[0017] Figure 2 This utility model Figure 1 A magnified view of a portion of the image;

[0018] Figure 3 This is a schematic diagram of the overall structure of the present utility model. Figure 2 ;

[0019] Figure 4 This utility model Figure 2A magnified view of a portion of the image;

[0020] Figure 5 This is a schematic diagram of the inner tube body of this utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the vibration damping component of this utility model;

[0022] Figure 7 This utility model Figure 6 Enlarged view of point A.

[0023] In the diagram: 1. Inner tube; 2. Flame-retardant sheath; 3. Vibration damping component; 31. Rubber strip; 32. Pressure relief groove; 321. Pressure relief hole; 322. Annular airbag; 33. Elastic connecting strip; 4. Plug-in component; 41. Dovetail insert; 42. Dovetail slot. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] Please see Figure 1-7 This utility model provides a technical solution:

[0027] A thin-walled flame-retardant titanium alloy tube includes an inner tube body 1, a flame-retardant sheath 2 on the outer side of the inner tube body 1, and several vibration damping components 3 on the outer wall of the inner tube body 1. The vibration damping components 3 and the flame-retardant sheath 2 are connected by a plug-in component 4. The vibration damping component 3 includes a rubber strip 31 with an X-shaped cross section. Several pressure-reducing grooves 32 are arranged at equal intervals in the inner cavity of the rubber strip 31. Several elastic connecting strips 33 are arranged at equal intervals and fixedly connected to the bifurcations on the inner and outer sides of the rubber strip 31. The inner end of the rubber strip 31 is fixedly connected to the outer wall of the inner tube body 1.

[0028] As a further implementation of this solution, pressure relief holes 321 are symmetrically opened on both sides of the pressure relief groove 32, and annular airbags 322 are provided between the rubber strips 31. The annular airbags 322 are segmented, and the end of each segment of the annular airbag 322 is fixedly inserted into the pressure relief hole 321 on the adjacent rubber strip 31. Each segment of the annular airbag 322 is connected to the corresponding pressure relief groove 32 through the pressure relief hole 321. The pressure relief groove 32 is connected to the annular airbag 322 through the pressure relief hole 321. This not only allows the gas in the pressure relief groove 32 to be squeezed into the annular airbag 322 when the rubber strip 31 is compressed to obtain a better buffering effect, but also disperses the gas pressure in the pressure relief groove 32 when the rubber strip 31 expands due to the high temperature medium transported in the inner tube 1, preventing the pressure relief groove 32 from rupturing.

[0029] As a further implementation of this solution, a gap is provided between the inner tube 1 and the flame-retardant sheath 2, and the annular airbag 322 is disposed in the gap and does not contact the inner tube 1 or the flame-retardant sheath 2. This arrangement can provide space for the expansion of the annular airbag 322.

[0030] As a further implementation of this solution, the number of elastic connecting bands 33 and pressure relief grooves 32 are equal and their positions correspond. The number of annular airbags 322 and pressure relief grooves 32 are equal. When the rubber strip 31 is compressed, its end bifurcates will expand outward due to the pressure, and at the same time, it will stretch the elastic connecting band 33. The elastic connecting band 33 will then drive the bifurcations of the rubber strip 31 to reset through its own rebound force, thereby buffering the pressure.

[0031] As a further implementation of this solution, the plug-in assembly 4 includes a dovetail insert 41, which is fixedly connected to the outer forked end of the rubber strip 31. The end of the flame-retardant sheath 2 is provided with several dovetail slots 42. The number of dovetail slots 42 and the dovetail insert 41 are equal, their positions are corresponding and their specifications are matched. The plug-in assembly 4 can provide a convenient connection between the vibration damping assembly 3 and the flame-retardant sheath 2, so as to facilitate installation and disassembly.

[0032] Workflow: The flame-retardant sleeve 2, fitted over the outer side of the inner tube 1, provides protection to the outer side of the inner tube 1. Therefore, when high-frequency vibrations occur inside the engine, the flame-retardant sleeve 2 will come into contact with surrounding components, preventing direct contact between the inner tube 1 and these components. Furthermore, the flame-retardant sleeve 2's own flame-retardant properties prevent localized overheating of the outer wall of the inner tube 1 due to friction. When surrounding components vibrate at high frequencies, the vibration first acts on the flame-retardant sleeve 2, causing it to compress the rubber strip 31. Under pressure, the forked ends of the rubber strip 31 expand outwards, buffering the pressure through its rubber properties. Simultaneously, it stretches the elastic connecting band 33, which, through its own rebound force, resets the forked ends of the rubber strip 31, thus mitigating the pressure. The pressure is buffered. When the rubber strip 31 is under great pressure, its own deformation will squeeze the gas in the pressure relief groove 32 from the pressure relief hole 321 into the annular air bag 322. The air pressure is used to obtain a better buffering effect, preventing high-frequency vibration generated inside the engine from acting on the inner tube body 1 and causing damage. When the inner tube body 1 transports high-temperature medium and causes the rubber strip 31 to expand thermally, it can disperse the gas pressure in the pressure relief groove 32 and prevent the pressure relief groove 32 from rupturing. The plug-in component 4 can provide a convenient connection between the vibration damping component 3 and the flame-retardant sleeve 2, so as to facilitate installation and disassembly. During installation, place the inner tube body 1 at one end of the flame-retardant sleeve 2, align the dovetail inserts 41 on the rubber strip 31 with the dovetail slots 42 one by one and push them into the flame-retardant sleeve 2. During disassembly, it can be pulled out.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A thin-walled flame-retardant titanium alloy tube, comprising an inner tube body (1), characterized in that: The outer side of the inner tube (1) is provided with a flame-retardant sheath (2), and the outer wall of the inner tube (1) is provided with a number of vibration damping components (3). The vibration damping components (3) and the flame-retardant sheath (2) are connected by a plug-in component (4). The vibration damping component (3) includes a rubber strip (31), the cross section of the rubber strip (31) is X-shaped, and the inner cavity of the rubber strip (31) is provided with several pressure-reducing grooves (32) arranged at equal intervals. Several elastic connecting strips (33) are arranged at equal intervals and fixedly connected at the bifurcations on the inner and outer sides of the rubber strip (31). The inner end of the rubber strip (31) is fixedly connected to the outer wall of the inner tube (1).

2. The thin-walled flame-retardant titanium alloy tube according to claim 1, characterized in that: The pressure relief groove (32) has pressure relief holes (321) symmetrically opened on both sides, and the rubber strip (31) is provided with an annular airbag (322), which is segmented.

3. A thin-walled flame-retardant titanium alloy tube according to claim 2, characterized in that: The end of each annular airbag (322) is fixedly inserted into the decompression hole (321) on the adjacent rubber strip (31), and each annular airbag (322) is connected to the corresponding decompression groove (32) through the decompression hole (321).

4. A thin-walled flame-retardant titanium alloy tube according to claim 2, characterized in that: A gap is provided between the inner tube (1) and the flame-retardant sheath (2), and the annular airbag (322) is disposed in the gap and does not contact the inner tube (1) or the flame-retardant sheath (2).

5. A thin-walled flame-retardant titanium alloy tube according to claim 2, characterized in that: The number of elastic connecting bands (33) and pressure relief grooves (32) are equal and their positions correspond, and the number of annular airbags (322) and pressure relief grooves (32) are equal.

6. A thin-walled flame-retardant titanium alloy tube according to claim 1, characterized in that: The plug-in assembly (4) includes a dovetail insert (41), which is fixedly connected to the outer forked end of the rubber strip (31), and the end of the flame-retardant sheath (2) is provided with several dovetail slots (42).

7. A thin-walled flame-retardant titanium alloy tube according to claim 6, characterized in that: The dovetail slots (42) and dovetail inserts (41) are equal in number, corresponding in position, and matched in specifications.

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