CN215980257U - Novel hydraulic system heat radiation structure - Google Patents
Novel hydraulic system heat radiation structure Download PDFInfo
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- CN215980257U CN215980257U CN202122691710.1U CN202122691710U CN215980257U CN 215980257 U CN215980257 U CN 215980257U CN 202122691710 U CN202122691710 U CN 202122691710U CN 215980257 U CN215980257 U CN 215980257U
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- flow limiting
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Abstract
The utility model provides a novel hydraulic system heat dissipation structure which comprises a flow limiting valve, an atmosphere pipeline, a liquid inlet pipeline and a liquid outlet pipeline, wherein the atmosphere pipeline is connected with the liquid inlet pipeline; the hydraulic pump is connected with the switch through a bypass pipeline; the hydraulic oil tank is connected with the switch through an oil return pipeline; the system switch is electrically connected with the switch; the switch is connected with the flow limiting valve through a liquid inlet pipeline; the liquid inlet pipeline and the liquid outlet pipeline are connected into a whole through threads; the liquid outlet pipeline penetrates out of the flow limiting valve to be connected with the oil return pipeline, and the fuel oil radiator is connected with the flow limiting valve through a cooling pipeline; the atmosphere pipeline is connected with the flow limiting valve; the exterior of the flow limiting valve is in a threaded pipe shape or a toothed sheet shape. The hydraulic pump of the hydraulic system is a main heating element, a normally open bypass pipeline is added in a system pressure supply pipeline, the zero flow working condition of the hydraulic pump is cancelled, the heat productivity of the hydraulic system is reduced, and meanwhile the heat dissipation area and the cooling effect of the hydraulic system are increased.
Description
Technical Field
The utility model belongs to the field of hydraulic systems, and particularly relates to a novel hydraulic system heat dissipation structure.
Background
The hydraulic system of the airplane is a closed system, and the oil temperature of the hydraulic system is one of important indexes of whether the hydraulic system can work normally. The hydraulic system supplies pressure to a control system, an undercarriage retracting system, a speed reduction plate retracting system, a flap retracting system and the like, and once the working oil temperature of the system is over-temperature in the actual flight process, the attachment performance of the hydraulic system can be reduced, so that the flight safety is directly influenced. The working temperature of the hydraulic system of the airplane must be controlled within a certain range to ensure the normal work of the hydraulic system.
When the heating and the heat dissipation of the hydraulic system are equal, the heat balance is achieved, and the oil temperature does not rise any more, so that the ways of controlling the temperature of the hydraulic system are to increase the heat dissipation and reduce the energy loss; when the hydraulic system works, various losses are caused, and the losses mainly comprise mechanical friction and viscous resistance losses in a pump and a hydraulic cylinder; throttling losses in pressure and flow valves; pressure losses in the directional valves and piping; internal and external leakage losses of the above-mentioned elements, etc., which are converted into heat, raising the temperature of the hydraulic oil and the elements.
The existing airplane hydraulic system adopts two heat dissipation modes, namely an air-hydraulic oil radiator and a fuel-hydraulic oil radiator; an air-hydraulic oil radiator is adopted, convection air is introduced to radiate the hydraulic system during flight, and the radiator is installed on an oil return pipeline of a hydraulic pump shell. This kind of heat dissipation mode can not solve ground engine when driving hydraulic system's heat dissipation problem. The fuel oil-hydraulic oil radiator which adopts fuel oil as a cooling medium utilizes the fuel oil burnt by the engine to radiate the heat of the hydraulic system, and the radiator is arranged on a main oil return pipeline of the hydraulic system. Because the fuel oil at the engine inlet of the airplane has temperature requirements, the heat dissipation mode can effectively dissipate heat for the hydraulic system and simultaneously ensure that the temperature of the fuel oil at the engine inlet cannot exceed the temperature, and because the actual flight condition of the airplane is particularly complex, the pump source, the pipeline and various loads of the hydraulic system are distributed at different parts of the airplane, the environment temperature is complex and variable, and the oil temperature of the hydraulic system has time-varying property. When the radiator is selected, not only the radiator is not overpressurized due to overlarge flow when the maximum flow of fuel oil or hydraulic oil is considered, but also the function of cooling a medium can be considered when the engine has small fuel oil flow when the airplane is cruising. The maximum heat dissipation capacity of the radiator needs to be increased, the weight of the radiator needs to be reduced, if parameters are not properly selected, the hydraulic oil temperature of a hydraulic system can become a heater, and a fault related to the fact that the fuel oil temperature at an inlet of an engine is over-temperature due to the fact that the hydraulic oil temperature is over-high can be caused.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, an object of the present invention is to provide a novel structure of a heat dissipation hydraulic system that can reduce the amount of heat generated by the hydraulic system and increase the heat dissipation area and cooling effect of the hydraulic system.
The utility model is realized by the following technical scheme:
a novel hydraulic system heat dissipation structure comprises a hydraulic pump, a hydraulic oil tank, a fuel oil radiator and a system switch (all belong to the prior art); the novel hydraulic system heat dissipation structure further comprises a flow limiting valve, an atmosphere pipeline, a liquid inlet pipeline and a liquid outlet pipeline; the hydraulic pump is connected with the switch through a bypass pipeline; the hydraulic oil tank is connected with the switch through an oil return pipeline; the system switch is electrically connected with the switch and used for controlling the bypass pipeline and selectively connecting or disconnecting the bypass pipeline without influencing the normal work of the system; the switch is connected with the flow limiting valve through a liquid inlet pipeline; the liquid inlet pipeline and the liquid outlet pipeline are connected into a whole through threads; the liquid outlet pipeline penetrates out of the flow limiting valve to be connected with the oil return pipeline, and the fuel oil radiator is connected with the flow limiting valve through a cooling pipeline; the atmosphere pipeline is connected with the flow limiting valve; wherein in order to enhance the cooling effect of the moist air on the combined flow limiting valve, the outside of the flow limiting valve is in a threaded pipe shape or a toothed sheet shape to increase the heat dissipation area.
Further, in order to discharge the condensed water accumulated in the cooling pipeline out of the machine through the push rod, a push rod drainer is arranged on the cooling pipeline.
The utility model has the beneficial effects that:
the hydraulic pump of the hydraulic system is a main heating element, the hydraulic pump is in a zero-flow working condition state with the largest heat productivity most of the time, a normally-open bypass pipeline is added in a system pressure supply pipeline, the zero-flow working condition of the hydraulic pump is cancelled, the heat productivity of the hydraulic system is reduced, meanwhile, the heat dissipation area and the cooling effect of the hydraulic system are increased, and the problem that when the selection of parameters of a fuel radiator is improper, the fuel temperature at the inlet of an engine is over-heated due to the fact that the hydraulic oil temperature is ultrahigh is solved.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of a heat dissipation structure of a novel hydraulic system in the utility model.
Shown in the figure: 1-a hydraulic pump; 2-a hydraulic oil tank; 3-a fuel oil radiator; 4-a drainer; 5-a switch; 6-a flow limiting valve; 7-a bypass conduit; 8-oil return pipeline; 9-a cooling pipeline; 10-atmospheric line; 11-a system switch; 12-a liquid inlet line; 13-liquid outlet line.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, proportions, and dimensions shown in the drawings and described herein are for illustrative purposes only and are not intended to limit the scope of the present invention, which is defined by the claims, but rather by the claims. In addition, the terms such as "upper", "lower", "left", "right" and "middle" used in the present specification are for convenience of description only, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship thereof may be regarded as the scope of the present invention without substantial changes in the technical contents.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
As shown in fig. 1, the novel hydraulic system heat dissipation structure includes a hydraulic pump 1, a hydraulic oil tank 2, a fuel oil radiator 3, and a system switch 11; the novel hydraulic system heat dissipation structure further comprises a flow limiting valve 6, an atmosphere pipeline 10, a liquid inlet pipeline 12 and a liquid outlet pipeline 13; the hydraulic pump 1 is connected with a switch 5 through a bypass pipeline 7; the hydraulic oil tank 2 is connected with the switch 5 through an oil return pipeline 8; the system switch 11 is electrically connected with the switch 5 and used for controlling the switch 5, the bypass pipeline 7 can be selectively connected or disconnected at the position of the system switch 11, the switch 5 is arranged at the inlet of the bypass pipeline 7, the bypass pipeline 7 is opened, the working condition of the maximum heat productivity of the hydraulic pump is cancelled, the heat productivity of the hydraulic system is reduced, and when the hydraulic system is in the working state of a large-flow system, the bypass pipeline 7 is closed, so that the normal work of the large-flow system is ensured; the switch 5 is connected with the flow limiting valve 6 through a liquid inlet pipeline 12; the liquid inlet pipeline 12 and the liquid outlet pipeline 13 are connected into a whole through threads; the liquid outlet pipeline 13 penetrates out of the flow limiting valve 6 to be connected with the oil return pipeline 8, and the fuel oil radiator 3 is connected with the flow limiting valve 6 through the cooling pipeline 9; the atmosphere pipeline 10 is connected with the flow limiting valve 6.
Further, in order to increase the heat dissipation effect, the exterior of the flow limiting valve 6 is in a threaded tubular shape or a toothed disc shape.
Further, a drain 4 is provided on the cooling line 9.
Further, the drainer 4 is a push ram drainer.
The working principle of the utility model is as follows:
the cylinder of the flow limiting valve 6 is provided with two pipe joints of a cooling pipeline 9 for inlet cold air and an atmospheric pipeline 10 for outlet cold air; the flow-limiting valve 6 is also internally provided with two pipe joints of a liquid inlet pipeline 12 for hydraulic pressure inlet and a liquid outlet pipeline 13 for hydraulic pressure outlet, and the left part and the right part are connected into a whole through threads; the outer parts of the flow limiting valves 6 are designed into a tooth sheet shape; cold air enters the flow limiting valve 6 through the cooling pipeline 9, so that the temperature in the flow limiting valve 6 is reduced, and then the cold air flows out of the atmospheric pipeline 10; the hydraulic pump 1 is switched through the internal pipeline of the switch 5 through the bypass pipeline 7, and is controlled by the system switch 11, oil enters the flow limiting valve 6 through the liquid inlet pipeline 12, and at the moment, the bypass pipeline 7 is normally open; when the large-flow system is folded and unfolded, the oil is locked inside the switch 5 and does not enter the combined flow-limiting valve 6, and the bypass pipeline 7 is closed.
The scope of the present invention is not limited to the technical solutions disclosed in the embodiments, and any modifications, equivalent substitutions, improvements, etc. made to the above embodiments according to the technical spirit of the present invention fall within the scope of the present invention.
Claims (4)
1. A novel hydraulic system heat dissipation structure comprises a hydraulic pump (1), a hydraulic oil tank (2), a fuel oil radiator (3) and a system switch (11); the device is characterized by comprising a flow limiting valve (6), an atmosphere pipeline (10) and a liquid outlet pipeline (13); the hydraulic pump (1) is connected with the switch (5) through a bypass pipeline (7); the hydraulic oil tank (2) is connected with the switch (5) through an oil return pipeline (8); the system switch (11) is electrically connected with the switch (5) and is used for controlling the switch (5); the switch (5) is connected with the flow limiting valve (6) through a liquid inlet pipeline (12); the liquid inlet pipeline (12) and the liquid outlet pipeline (13) are connected into a whole through threads; the liquid outlet pipeline (13) penetrates through the flow limiting valve (6) to be connected with the oil return pipeline (8), and the fuel oil radiator (3) is connected with the flow limiting valve (6) through the cooling pipeline (9); the atmosphere pipeline (10) is connected with the flow limiting valve (6).
2. The novel hydraulic system heat dissipation structure is characterized in that the exterior of the flow limiting valve (6) is in a threaded tubular shape or a toothed sheet shape.
3. The novel hydraulic system heat dissipation structure as recited in claim 1, characterized in that a drainer (4) is arranged on the cooling pipeline (9).
4. The novel hydraulic system heat dissipation structure as recited in claim 3, wherein the drainer (4) is a push ram drainer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122691710.1U CN215980257U (en) | 2021-11-05 | 2021-11-05 | Novel hydraulic system heat radiation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122691710.1U CN215980257U (en) | 2021-11-05 | 2021-11-05 | Novel hydraulic system heat radiation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215980257U true CN215980257U (en) | 2022-03-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122691710.1U Active CN215980257U (en) | 2021-11-05 | 2021-11-05 | Novel hydraulic system heat radiation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215980257U (en) |
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2021
- 2021-11-05 CN CN202122691710.1U patent/CN215980257U/en active Active
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Legal Events
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230615 Address after: 561000 Songqi Town, Anshun economic and Technological Development Zone, Guizhou Province Patentee after: AVIC GUIZHOU AIRPLANE Co.,Ltd. Address before: 561000 Anshun economic and Technological Development Zone, Guizhou Patentee before: Guizhou Guifei aircraft design and Research Institute Co.,Ltd. |