Low-noise aircraft fatigue test hydraulic pump station

Abstract

The utility model discloses a low-noise aircraft fatigue test hydraulic pump station, which comprises an oil storage tank, a hydraulic pump station and a hydraulic pump station, the hydraulic pipeline is used for allowing hydraulic oil to circulate, the hydraulic pipeline is at least provided with an oil inlet and an oil return port, and the oil inlet and the oil return port are both communicated with the containing space in the oil storage tank; the pump assembly is arranged at the top of the oil storage tank, and the pump assembly is used for driving the hydraulic oil to flow in the hydraulic pipeline; the silencing shell is arranged at the top of the oil storage tank, and the pump assembly and the hydraulic pipeline are both located in the silencing shell; and the noise reduction cover body is arranged in the noise reduction shell, the noise reduction cover body is arranged on the pump assembly in a covering mode, and working noise can be greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic equipment technical field especially relates to a low noise's aircraft fatigue test hydraulic pump station. BACKGROUND

[0002] The hydraulic system is needed in the aircraft fatigue test process, it drives the execution part activity through the hydraulic system to carry out the fatigue test to certain specific structure of the aircraft, and the hydraulic system is mainly constituted by oil tank, hydraulic pump group and hydraulic pipeline, and the oil tank is used to accommodate the hydraulic oil, and the hydraulic pump group drives the hydraulic oil to flow in the hydraulic pipeline and can drive the execution part, and the hydraulic pump group generally includes motor and pump, and the motor drives the pump to work, and the prior art can emit great noise in the process that the hydraulic pump group works, and the noise pollution is caused, and the working environment is relatively bad, and how to solve the low noise work of the hydraulic pump station is the technical problem that urgently needs to be solved. UTILITY MODEL CONTENTS

[0003] The utility model provides low noise's aircraft fatigue test hydraulic pump station, it can greatly reduce the working noise.

[0004] In order to solve the above technical problem, the utility model provides a low noise's aircraft fatigue test hydraulic pump station, including:

[0005] Oil tank is used to accommodate the hydraulic oil;

[0006] Hydraulic pipeline is used for the flow of hydraulic oil, and the hydraulic pipeline has at least oil inlet and oil return, and the oil inlet and the oil return are connected with the accommodating space in the oil tank;

[0007] Pump assembly is arranged on the top of the oil tank, and the pump assembly is used to drive the hydraulic oil to flow in the hydraulic pipeline;

[0008] The sound-absorbing shell is arranged on the top of the oil tank, and the pump assembly and the hydraulic pipeline are located in the interior of the sound-absorbing shell;

[0009] The sound-absorbing cover is arranged in the interior of the sound-absorbing shell, and the sound-absorbing cover is arranged on the pump assembly.

[0010] As the preferred technical scheme, the inner wall of the sound-absorbing shell is provided with sound-absorbing material.

[0011] As the preferred technical scheme, the low noise's aircraft fatigue test hydraulic pump station further includes cooling system, and the cooling system is used to cool the hydraulic oil.

[0012] As a preferred form of the above technical solution, the cooling system comprises a cooling pipeline, a circulating pump, a first heat exchanger, a second heat exchanger and an external cold source, the circulating pump, the first heat exchanger and the second heat exchanger are arranged on the cooling pipeline, the circulating pump is used to drive the liquid cooling medium to flow in the cooling pipeline, the first heat exchanger is a plate heat exchanger, the plate heat exchanger has a first space and a second space inside, the first space is in communication with the hydraulic pipeline to enable the hydraulic oil to flow through the first space, the second space is in communication with the cooling pipeline, the hydraulic oil in the first space and the liquid cooling medium in the second space can exchange heat, and the external cold source is connected with the second heat exchanger to cool the liquid cooling medium flowing through the second heat exchanger.

[0013] As a preferred form of the above technical solution, an internal space is formed in the side wall of the soundproof cover, and the internal space is in communication with the cooling pipeline to enable the liquid cooling medium to flow through the internal space.

[0014] As a preferred form of the above technical solution, a plurality of tabs are formed in the internal space, the tabs are respectively located on two sides of the internal space, the tabs are connected with the inner wall of the internal space, the tabs on the two sides of the internal space are distributed at equal intervals in the vertical direction, and the tabs on one side of the internal space are staggered with the tabs on the other side of the internal space.

[0015] As a preferred form of the above technical solution, a heat conduction structure layer is arranged on the inner wall of the soundproof cover, and the heat conduction structure layer is in a honeycomb shape.

[0016] As a preferred form of the above technical solution, soundproof cotton is arranged on the outer wall of the soundproof cover.

[0017] As a preferred form of the above technical solution, a one-way valve, a pressure sensor and a temperature sensor are arranged on the cooling pipeline.

[0018] As a preferred form of the above technical solution, the oil storage tank is arranged on a mounting base, a connecting column is arranged on the lower surface of the mounting base, a shock absorber is arranged at the lower end of the connecting column, and the shock absorber is made of rubber.

[0019] The utility model provides a kind of low-noise aircraft fatigue test hydraulic pump station, it includes oil tank, hydraulic line, pump assembly, sound-absorbing shell and sound-absorbing cover, hydraulic oil is placed in oil tank, pump assembly is installed in the top of oil tank, pump assembly is used to drive hydraulic oil in hydraulic line, sound-absorbing shell covers the top of oil tank so that pump assembly and hydraulic line are located in the inside of sound-absorbing shell, in addition, sound-absorbing cover is also equipped in the inside of sound-absorbing shell, sound-absorbing shell covers pump assembly as a whole, the utility model reduces the noise in working process by sound-absorbing cover and sound-absorbing shell, it can greatly reduce the noise intensity in working process, forms low-noise hydraulic working system.

[0020] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, can be implemented according to the content of specification, and in order to let the above and other purposes, characteristics and advantages of the utility model can be more obvious and easy to understand, the following specific embodiment of the utility model is described. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 A top view of a kind of low-noise aircraft fatigue test hydraulic pump station in the embodiment is shown;

[0022] Fig. 2 The installation structure schematic diagram of sound-absorbing shell in the embodiment is shown;

[0023] Fig. 3 The working principle schematic diagram of cooling system in the embodiment is shown;

[0024] Fig. 4 The sectional view of sound-absorbing cover in the embodiment is shown;

[0025] In the drawing: 10, oil tank;20, sound-absorbing shell;30, shock absorber;40, connecting column;50, mounting base;60, hydraulic line;70, sound-absorbing shell;80, cooling system;701, flow-through space;702, tab;703, heat-conducting structure layer;704, sound-absorbing cotton;801, hydraulic line;802, circulating pump;803, temperature sensor;804, external cold source;805, second heat exchanger;806, pressure sensor;807, one-way valve;808, first heat exchanger. DETAILED DESCRIPTION

[0026] In order to make the purpose, characteristics and advantages of the utility model more obvious and easy to understand, the technical solutions in the utility model embodiments will be clearly and completely described below in combination with the drawings in the utility model embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0027] Referring to Figs. 1 to 4 The utility model embodiments provide a low noise aircraft fatigue test hydraulic pump station, comprising:

[0028] The oil storage tank 10 is used for containing hydraulic oil.

[0029] The hydraulic pipeline 60 is used for the flow of hydraulic oil, and the hydraulic pipeline 60 has at least an oil inlet and an oil return port, both of which are communicated with the containing space inside the oil storage tank 10.

[0030] The pump assembly is arranged on the top of the oil storage tank 10, and the pump assembly is used to drive the flow of hydraulic oil in the hydraulic pipeline 60.

[0031] The sound-absorbing shell 20 is arranged on the top of the oil storage tank 10, and the pump assembly and the hydraulic pipeline 60 are both located inside the sound-absorbing shell 20.

[0032] The sound-absorbing cover 70 is arranged inside the sound-absorbing shell 20, and the sound-absorbing cover 70 covers the pump assembly.

[0033] The low noise aircraft fatigue test hydraulic pump station provided by the embodiment comprises an oil storage tank 10, a hydraulic pipeline 60, a pump assembly, a sound-absorbing shell 20 and a sound-absorbing cover 70, the hydraulic oil is placed in the oil storage tank 10, the pump assembly is installed on the top of the oil storage tank 10, the pump assembly is used to drive the flow of hydraulic oil in the hydraulic pipeline 60, the sound-absorbing shell 20 covers the top of the oil storage tank 10 so that the pump assembly and the hydraulic pipeline 60 are both located inside the sound-absorbing shell 20, in addition, the sound-absorbing cover 70 is arranged inside the sound-absorbing shell 20, and the sound-absorbing shell 20 covers the pump assembly as a whole, the embodiment reduces the noise in the working process through the sound-absorbing cover 70 and the sound-absorbing shell 20, which can greatly reduce the noise intensity in the working process and form a low noise hydraulic working system.

[0034] In a further implementable manner of the embodiment, the inner wall of the sound-absorbing shell 20 is provided with sound-absorbing material.

[0035] The sound-absorbing material arranged on the inner wall of the sound-absorbing shell 20 in the embodiment can further reduce the noise in the working process, and specifically, the sound-absorbing material in the embodiment can adopt sound-absorbing cotton and the like.

[0036] In a further implementation form of the embodiment, the low-noise hydraulic fatigue test pump station further comprises a cooling system 80 for cooling the hydraulic oil.

[0037] Since the hydraulic system is generally in a high-load long-term working state during the fatigue test, the temperature of the hydraulic oil is relatively high, and the high-temperature hydraulic oil will cause the working state to be unstable, and therefore the cooling system 80 needs to be arranged to cool the hydraulic oil, and the system working stability can be improved after the hydraulic oil is cooled by the cooling system 80.

[0038] In a further implementation form of the embodiment, the cooling system 80 comprises a cooling pipeline 801, a circulating pump 802, a first heat exchanger 808, a second heat exchanger 805 and an external cold source 804, the circulating pump 802, the first heat exchanger 808 and the second heat exchanger 805 are arranged on the cooling pipeline 801, the circulating pump 802 is used to drive the liquid cooling medium to flow in the cooling pipeline 801, the first heat exchanger 808 is a plate heat exchanger, the plate heat exchanger has a first space and a second space inside, the first space is in communication with the hydraulic pipeline 60 so that the hydraulic oil can flow through the first space, the second space is in communication with the cooling pipeline 801, the hydraulic oil in the first space and the liquid cooling medium in the second space can exchange heat, and the external cold source 804 is connected with the second heat exchanger 805 and is used to cool the liquid cooling medium flowing through the second heat exchanger 805.

[0039] In the embodiment, the second heat exchanger 805 is connected with the external cold source 804, the liquid cooling medium inside the cooling pipeline 801 is cooled by the second heat exchanger 805, and the liquid cooling medium cools and lowers the temperature of the hydraulic oil by the first heat exchanger 808. In the embodiment, the first heat exchanger 808 adopts a plate heat exchanger, which can not only quickly exchange heat, but also save space and will not affect the original layout.

[0040] In a further implementation form of the embodiment, the inside of the side wall of the soundproof cover 70 is formed with a flow-through space 701, and the flow-through space 701 is in communication with the cooling pipeline 801 so that the liquid cooling medium can flow through the flow-through space 701.

[0041] The soundproof cover 70 in the embodiment covers the pump assembly, which will affect the original heat dissipation, and the flow-through space 701 and the cooling pipeline 801 can dissipate heat from the pump assembly by the cooling system 80, and in addition, the liquid cooling heat dissipation can reduce the noise compared with the original air cooling heat dissipation.

[0042] In addition, the soundproof cover 70 in the embodiment can adopt an alloy or metal material with good heat conductivity, such as aluminum alloy.

[0043] In a further implementation of the embodiment, the interior of the flow space 701 is formed with a plurality of tabs 702, which are respectively located on two sides of the flow space 701, and the plurality of tabs 702 are connected to the inner wall of the flow space 701. The plurality of tabs 702 located on the two sides of the flow space 701 are equally spaced in the vertical direction, and the plurality of tabs 702 located on one side of the flow space 701 are staggered with the plurality of tabs 702 located on the other side of the flow space 701.

[0044] In the embodiment, the interior of the flow space 701 is formed with a plurality of tabs 702, which can improve the heat exchange efficiency and further improve the heat dissipation and cooling effect of the pump assembly. In addition, in the working state, the interior of the flow space 701 has cooling liquid, and the sound will be refracted when propagating from the solid to the liquid. The refracted sound wave will change the transmission direction. In combination with the staggered tabs 702, the sound wave can be attenuated after multiple reflections, and further the noise can be reduced.

[0045] In a further implementation of the embodiment, the inner wall of the soundproof cover 70 is provided with a heat conduction structure layer 703, which is in a honeycomb shape.

[0046] In the embodiment, the heat conduction structure layer 703 is in a honeycomb shape, which can not only improve the heat exchange efficiency and improve the cooling effect of the pump assembly, but also further reduce the noise.

[0047] In a further implementation of the embodiment, the outer wall of the soundproof cover 70 is coated with soundproof cotton 704.

[0048] In the embodiment, the outer wall of the soundproof cover 70 is coated with soundproof cotton 704, which can further reduce the noise.

[0049] In a further implementation of the embodiment, the cooling pipeline 801 is provided with a one-way valve 807, a pressure sensor 806 and a temperature sensor 803.

[0050] In a further implementation of the embodiment, the oil storage tank 10 is arranged on the mounting base 50, and the lower surface of the mounting base 50 is provided with a connecting column 40. The lower end of the connecting column 40 is provided with a shock absorber 30, and the shock absorber 30 is made of rubber material.

[0051] In the embodiment, the lower end of the connecting column 40 is provided with a shock absorber 30, and the shock absorber 30 is made of rubber material, which can have good shock absorption effect. In addition, the setting of the shock absorber 30 can also reduce the noise generated in the vibration process

[0052] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples, without contradiction.

[0053] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0054] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A low-noise hydraulic pump station for aircraft fatigue testing, characterized in that, include: Oil reservoir, used to hold hydraulic oil; A hydraulic pipeline for supplying hydraulic oil, the hydraulic pipeline having at least an inlet and an outlet, both of which are connected to the internal storage space of the oil reservoir. A pump assembly is disposed on top of the oil reservoir, and the pump assembly is used to drive the hydraulic oil to flow in the hydraulic pipeline; A silencer housing is disposed on top of the oil reservoir, and the pump assembly and the hydraulic lines are both located inside the silencer housing; A noise-absorbing cover is disposed inside the noise-absorbing housing and covers the pump assembly.

2. The low-noise aircraft fatigue testing hydraulic pump station according to claim 1, characterized in that, The inner wall of the sound-absorbing housing is provided with sound-absorbing material.

3. The low-noise aircraft fatigue testing hydraulic pump station according to claim 1, characterized in that, The low-noise aircraft fatigue testing hydraulic pump station also includes a cooling system for cooling the hydraulic oil.

4. The low-noise aircraft fatigue testing hydraulic pump station according to claim 3, characterized in that, The cooling system includes cooling pipes, a circulating pump, a first heat exchanger, a second heat exchanger, and an external cold source. The circulating pump, the first heat exchanger, and the second heat exchanger are all located on the cooling pipes. The circulating pump drives the liquid cooling medium to flow in the cooling pipes. The first heat exchanger is a plate heat exchanger, and the plate heat exchanger has a first space and a second space inside. The first space is connected to the hydraulic pipes so that the hydraulic oil can flow through the first space. The second space is connected to the cooling pipes. The hydraulic oil located in the first space and the liquid cooling medium located in the second space can exchange heat. The external cold source is connected to the second heat exchanger to cool the liquid cooling medium flowing through the second heat exchanger.

5. The low-noise aircraft fatigue testing hydraulic pump station according to claim 4, characterized in that, The side wall of the silencing cover has a flow space inside, which is connected to the cooling pipe so that the liquid coolant can flow through the flow space.

6. The low-noise aircraft fatigue testing hydraulic pump station according to claim 5, characterized in that, The circulation space has multiple protrusions inside, which are located on both sides of the circulation space. The multiple protrusions are connected to the inner wall of the circulation space. The multiple protrusions on both sides of the circulation space are distributed at equal intervals in the vertical direction, and the multiple protrusions on one side of the circulation space are staggered with the multiple protrusions on the other side of the circulation space.

7. The low-noise aircraft fatigue testing hydraulic pump station according to claim 6, characterized in that, The inner wall of the soundproof cover is provided with a heat-conducting structural layer, which is honeycomb in shape.

8. The low-noise aircraft fatigue testing hydraulic pump station according to claim 7, characterized in that, The outer wall of the soundproof cover is covered with sound-absorbing cotton.

9. The low-noise aircraft fatigue testing hydraulic pump station according to claim 4, characterized in that, The cooling pipeline is equipped with a check valve, a pressure sensor, and a temperature sensor.

10. The low-noise aircraft fatigue testing hydraulic pump station according to claim 9, characterized in that, The oil storage tank is mounted on a mounting base. A connecting column is provided on the lower surface of the mounting base, and a shock absorber is provided at the lower end of the connecting column. The shock absorber is made of rubber.

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