Flow observation hose assembly of aero-engine

Abstract

The utility model provides a flow observation hose assembly of an aero-engine. The flow observation hose assembly comprises a corrugated pipe, an inner pipe, a transparent hose, a connecting piece and a protective shell. The corrugated pipe is sleeved outside the inner pipe, and the end part of the transparent hose is clamped in the inner pipe; the protective shell is sleeved outside the transparent hose; one end of the connecting piece is clamped between the corrugated pipe and the inner pipe, and the other end of the connecting piece is rotationally connected with the protective shell in the circumferential direction; the protective shell rotates in the circumferential direction so that at least part of the transparent hose can be exposed to the outer side. The problem that the flow of a metal hose of an aero-engine is inconvenient to observe is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to aviation technical field, specifically, relate to a flow observation hose assembly of aero-engine. BACKGROUND

[0002] At present in the field of aerospace, in order to ensure that the pipeline of engine can absorb vibration, reduce mass, reduce the volume small, and bear high pressure, corrosion resistance, high and low temperature resistance, fatigue resistance, with flexibility, generally adopt metal hose. Limited by the material of metal hose, the flow of oil therein cannot be directly observed, and the metal hose with flexibility is not convenient for direct installation of window. UTILITY MODEL CONTENTS

[0003] The utility model solves the problem that the metal hose of aero-engine is inconvenient to observe flow.

[0004] To solve the above problem, the utility model provides a flow observation hose assembly of aero-engine, and the flow observation hose assembly comprises a corrugated pipe, an inner tube, a transparent hose, a connecting piece and a protective shell, the corrugated pipe is sleeved outside the inner tube, the end of the transparent hose is clamped in the inner tube, the protective shell is sleeved outside the transparent hose, one end of the connecting piece is clamped between the corrugated pipe and the inner tube, the other end of the connecting piece is rotationally connected with the protective shell in the circumferential direction, and wherein the rotation of the protective shell in the circumferential direction can expose the transparent hose at least partially outside.

[0005] Further, the side of the connecting piece towards the protective shell is provided with at least one arc-shaped sliding groove, and the end of the protective shell is provided with a sliding block, the sliding block is inserted into the sliding groove and can slide in the circumferential direction.

[0006] Further, the sliding block is provided with a damping part, and the damping part is attached to the inner wall of the sliding groove.

[0007] Further, the flow observation hose assembly further comprises a support shell, and the support shell is fixed to the end face of the connecting piece, and wherein the protective shell can be rotated to the inner side or the outer side of the support shell to expose the transparent hose.

[0008] Further, the inner wall of the corrugated pipe is provided with a corrugated groove, the outer side of the end of the connecting piece is provided with a plurality of axial positioning pieces, and the positioning pieces are matched with the corrugated groove.

[0009] Further, the inner wall of the connecting piece is in interference fit with the outer wall of the inner tube.

[0010] Further, the outer side of the end of the transparent hose is provided with an elastic clamping piece, the inner wall of the inner tube is provided with a retreat-stop piece, and the elastic clamping piece is matched with the retreat-stop piece.

[0011] Further, the outer side of the elastic clamping piece is covered with an anti-vibration piece.

[0012] Furthermore, the connector extends out of the inner tube; a sealing ring is provided between the connector and the transparent flexible tube.

[0013] The above-mentioned technical solutions of this application may have one or more advantages or beneficial effects as follows: (1) The transparent hose is used to connect the inner tube. When the oil for the aircraft engine flows from the inner tube through the transparent hose, the flow rate of the oil can be observed through the transparent hose; (2) The protective shell can prevent the transparent hose from being contaminated or corroded, and also prevent the oil from being exposed to light for a long time. When it is necessary to observe the flow rate of the oil, the protective shell can be opened to observe the transparent hose, which is easy to operate; (3) The slider is inserted into the sliding groove and can slide along the circumference to realize the directional sliding of the protective shell and prevent the protective shell from contacting the transparent hose; (4) The support shell is used to support between the two connecting parts, so that the connecting parts on both sides maintain a stable position relationship and prevent the transparent hose from bending and being damaged; (5) The elastic locking part and the anti-reverse part cooperate to realize the stable connection between the transparent hose and the inner tube and prevent the transparent hose from separating from the inner tube; (6) The vibration damping part is used to buffer the vibration of the inner tube and prevent the oil from leaking due to the gap between the transparent hose and the inner tube caused by vibration. The sealing ring is used to further seal the outside of the transparent hose and prevent the oil in the inner tube from flowing out of the transparent hose. Attached Figure Description

[0014] Figure 1 A schematic diagram of the structure of a flow observation hose assembly for an aero-engine provided in this embodiment of the present invention;

[0015] Figure 2 for Figure 1 A magnified view of a portion of region I;

[0016] Figure 3 This is a structural schematic diagram of the end face of the connector;

[0017] Figure 4 This is a schematic diagram of the protective shell.

[0018] Explanation of reference numerals in the attached figures:

[0019] 100 - Flow observation hose assembly; 110 - Bellows; 120 - Inner tube; 121 - Anti-reverse component; 130 - Transparent hose; 131 - Elastic locking component; 132 - Vibration damping component; 140 - Connector; 141 - Sliding groove; 150 - Protective shell; 151 - Slider; 152 - Damping part; 160 - Support shell; 170 - Sealing ring. Detailed Implementation

[0020] The purpose of this invention is to provide a flow observation hose assembly for an aircraft engine, which facilitates the observation of oil flow in the aircraft engine.

[0021] In order to make the above objects, features and advantages of the present application more obvious and understandable, the specific embodiments of the present application will be described in detail below with reference to the drawings.

[0022] Referring to Figures 1-4 The utility model provides a flow observation hose assembly 100 of aeroengine, flow observation hose assembly 100 includes: bellows 110, inner tube 120, transparent hose 130, connecting piece 140, protection shell 150, bellows 110 is set in the outer tube 120, and the end of transparent hose 130 is clamped in the inside of inner tube 120, protection shell 150 is sleeved in the outside of transparent hose 130, and one end of connecting piece 140 is clamped between bellows 110 and inner tube 120, and the other end of connecting piece 140 is rotationally connected with protection shell 150 along the circumference, wherein, the rotation of protection shell 150 along the circumference can make transparent hose 130 at least partially exposed outside.

[0023] In the embodiment, inner tube 120 is metal pipe, and transparent hose 130 is used for leading through inner tube 120, and when the oil of aeroengine flows through transparent hose 130 from inner tube 120, the flow of oil can be observed through transparent hose 130, connecting piece 140 has enough strength, and one end thereof can stably install inner tube 120 and bellows 110, so that bellows 110 will not be loose, and inner tube 120 is effectively protected, and the other end of connecting piece 140 can stably install protection shell 150, protection shell 150 can avoid transparent hose 130 from being polluted or corroded, and also avoid oil liquid from being exposed to light for a long time, when the flow of oil liquid needs to be observed, protection shell 150 can be opened to observe transparent hose 130, and the operation is simple and convenient.

[0024] In one specific embodiment, the side of connecting piece 140 towards protection shell 150 is provided with at least one arc-shaped sliding groove 141, and the end of protection shell 150 is provided with a sliding block 151, which is inserted into the sliding groove 141 and can slide along the circumference.

[0025] The arc-shaped sliding groove 141 is used for matching the arc of the sliding block 151, so that the sliding is smoother, and the protection shell 150 can slide along the circumferential direction, avoiding the protection shell 150 from contacting the transparent hose 130 and causing damage to the transparent hose 130.

[0026] Optionally, the number of the sliding blocks 151 at each end of the protection shell 150 can be one or more.

[0027] In one specific embodiment, the sliding block 151 is provided with a damping portion 152, which is attached to the inner wall of the sliding groove 141.

[0028] The damping part 152 can provide sufficient friction to lock the slider 151 at any position of the sliding groove 141 after sliding. When observing the transparent hose 130, the protective shell 150 does not need to be manually supported all the time, and the observation is more convenient.

[0029] Preferably, the damping part 152 is, for example, a circular protrusion, which is not limited here.

[0030] In a specific embodiment, the flow observation hose assembly 100 further comprises a support shell 160 fixed to the end face of the connecting piece 140; wherein the protective shell 150 can be rotated to the inside or outside of the support shell 160 to expose the transparent hose 130.

[0031] The support shell 160 is used to support between the two connecting pieces 140, so that the two connecting pieces 140 maintain a stable positional relationship, avoiding damage to the transparent hose 130 due to bending; at the same time, after the support shell 160 is fixed to the connecting piece 140, the stress on both ends of the protective shell 150 can be reduced, prolonging the service life of the protective shell 150.

[0032] Preferably, the support shell 160 and the connecting piece 140 can be fixed by interference fit insertion or welding, which is not limited here.

[0033] Preferably, the support shell 160 and the protective shell 150 are arranged in a circumferential direction, and the protective shell 150 can be slid to the outside of the support shell 160 to form an observation opening between adjacent support shells 160, so as to facilitate observation of the transparent hose 130. The number of support shells 160 and protective shells 150 can be 2, 3, 4, 6, etc., preferably an even number, so that there is an observation opening at the opposite position, and the opposite sides of the transparent hose 130 can guide light, thereby providing a clearer observation effect when observing the flow.

[0034] Preferably, when the slider 151 moves in the sliding groove 141, at least part of the protective shell 150 is always located outside the support shell 160, avoiding the protective shell 150 from coming off and entering the inside of the support shell 160 to affect the transparent hose 130.

[0035] Preferably, the slider 151 is close to any side of the end face of the protective shell 150, and the sliding groove 141 is at least partially located outside the support shell 160, so that the slider 151 can be slid to the outside of the support shell 160, at which time the observation opening can be completely exposed and will not be blocked by the protective shell 150, thereby achieving a brighter observation effect.

[0036] In a specific embodiment, the inner wall of the corrugated pipe 110 has a corrugated groove, and the end outside of the connecting piece 140 has a plurality of axial positioning pieces, which are matched with the corrugated groove.

[0037] The bellows 110 rotates as a whole, and the positioning member is turned into the corrugated groove, and the axial locking of the bellows 110 is realized through the friction between the positioning member and the corrugated groove.

[0038] In a specific embodiment, the inner wall of the connecting member 140 is in interference fit with the outer wall of the inner tube 120, so that the stable connection of the connecting member 140 to the inner tube 120 is realized, and the connecting member 140 is prevented from being separated or the oil leakage.

[0039] In a specific embodiment, the outer side of the end of the transparent hose 130 is provided with an elastic clamping member 131, and the inner wall of the inner tube 120 is provided with a retreat-stop member 121, and the elastic clamping member 131 is matched with the retreat-stop member 121.

[0040] Preferably, the retreat-stop member 121 is provided with a guide slope on the side close to the end of the inner tube 120, and is provided with a retreat-stop surface on the side away from the end of the inner tube 120. When the transparent hose 130 is installed on the inner tube 120, the elastic clamping member 131 can be deformed along the guide slope and then slide into the inner side of the retreat-stop member 121, and the retreat-stop surface of the retreat-stop member 121 can block the elastic clamping member 131 from sliding out when the elastic clamping member 131 is restored, so that the stable sleeve connection of the transparent hose 130 to the inner tube 120 is realized.

[0041] In a specific embodiment, the outer side of the elastic clamping member 131 is covered with an anti-vibration member 132.

[0042] The anti-vibration member 132 is used for buffering the vibration of the inner tube 120, so that the gap between the transparent hose 130 and the inner tube 120 caused by the vibration is avoided to cause the oil leakage, and the vibration is also avoided to cause the crack of the elastic clamping member 131, so that the service life of the transparent hose 130 is improved.

[0043] In a specific embodiment, the connecting member 140 protrudes from the inner tube 120, and the connecting member 140 and the transparent hose 130 are provided with a sealing ring 170.

[0044] The sealing ring 170 is used for further sealing the outer side of the transparent hose 130, so that the oil in the inner tube 120 is prevented from flowing out from the transparent hose 130.

[0045] Preferably, the outer side of the transparent hose 130 or the inner side of the connecting member 140 can be provided with a sealing groove (not shown in the figure) for accommodating the sealing ring 170, so that the positioning and installation of the sealing ring 170 are realized.

[0046] Although the utility model discloses as above, the utility model is not limited to this. Any person skilled in the art, without departing from the spirit and scope of the utility model, can make various changes and modifications, therefore the protection scope of the utility model should be the range defined by the claims.

Claims

1. A flow sight tube assembly for an aircraft engine, characterized by, The flow observation hose assembly comprises a bellows (110), an inner tube (120), a transparent hose (130), a connecting piece (140), a protective shell (150); The bellows (110) is sleeved outside the inner tube (120), and the end of the transparent hose (130) is clamped inside the inner tube (120); the protective shell (150) is sleeved outside the transparent hose (130); one end of the connecting piece (140) is clamped between the bellows (110) and the inner tube (120), and the other end of the connecting piece (140) is rotationally connected with the protective shell (150) in the circumferential direction; The rotation of the protective shell (150) in the circumferential direction can at least partially expose the transparent hose (130) outside.

2. The flow observation hose assembly of claim 1, wherein, The side of the connecting piece (140) towards the protective shell (150) is provided with at least one arc-shaped sliding groove (141), and the end of the protective shell (150) is provided with a sliding block (151) which is inserted into the sliding groove (141) and can slide in the circumferential direction.

3. The flow observation hose assembly of claim 2, wherein, The sliding block (151) is provided with a damping portion (152) which is in contact with the inner wall of the sliding groove (141).

4. The flow observation hose assembly of claim 2, wherein, The flow observation hose assembly further comprises a support shell (160) which is fixed to the end face of the connecting piece (140); The protective shell (150) can be rotated to the inside or outside of the support shell (160) to expose the transparent hose (130).

5. The flow observation hose assembly of claim 1, wherein, The inner wall of the bellows (110) is provided with a corrugated groove, and the outer side of the end of the connecting piece (140) is provided with a plurality of axial positioning pieces which are matched with the corrugated groove.

6. The flow observation hose assembly of claim 1, wherein, The inner wall of the connecting piece (140) is in interference fit with the outer wall of the inner tube (120).

7. The flow observation hose assembly of claim 1, wherein, The outer side of the end of the transparent hose (130) is provided with an elastic clamping piece (131). The inner wall of the inner tube (120) is provided with a retreat-stop piece (121) which is matched with the elastic clamping piece (131).

8. The flow observation hose assembly of claim 7, wherein, The outer side of the elastic clamping piece (131) is covered with an anti-vibration piece (132).

9. The flow observation hose assembly of claim 1, wherein, The connecting piece (140) protrudes from the inner tube (120), and the connecting piece (140) and the transparent hose (130) are provided with a sealing ring (170).

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