Liquid circuit system and deicing vehicle

Abstract

An embodiment of the present invention provides a fluid circuit system and a de-icing vehicle. The fluid circuit system includes a first liquid storage tank, a second liquid storage tank, a first delivery pipeline, a second delivery pipeline, a liquid mixing device, a heating device, a heat exchange tube assembly, and a heat exchange branch pipeline. The first liquid storage tank contains a first liquid; the second liquid storage tank contains a second liquid; the first delivery pipeline delivers the first liquid; the second delivery pipeline delivers the second liquid; the heating device heats the first liquid in the first delivery pipeline and / or heats the second liquid in the second delivery pipeline; a heat exchange tube assembly is provided in the first liquid storage chamber and / or the second liquid storage chamber; the heat exchange tube assembly is provided in the heat exchange branch pipeline. The heat exchange branch pipeline delivers one liquid heated by the heating device to the heat exchange tube assembly located in the other liquid storage tank and returns it, or / and returns one liquid heated by the heating device and delivers the other liquid to the heat exchange tube assembly located in the heated liquid storage tank and returns it. The fluid circuit system in this embodiment of the present invention improves heating efficiency.

Description

Technical Field

[0001] The present invention relates to the field of deicing technology, and in particular to a fluid system and a deicing vehicle. Background Art

[0002] In cold weather, ice formation on aircraft surfaces can severely impact aerodynamics and maneuverability, posing a significant risk to flight safety. Therefore, de-icing and anti-icing operations on aircraft surfaces on the ground are crucial components of aircraft ground maintenance.

[0003] In the related art, deicing is achieved by spraying deicing fluid onto the aircraft surface. Summary of the Invention

[0004] In view of this, embodiments of the present application aim to provide a fluid system and a deicing vehicle that can heat deicing fluid to improve the deicing effect.

[0005] To achieve the above objectives, the technical solution of the embodiment of the present application is implemented as follows:

[0006] An embodiment of the present invention provides a fluid circuit system, including:

[0007] A first liquid storage tank is provided with a first liquid storage cavity for containing a first liquid;

[0008] A second liquid storage tank is provided with a second liquid storage cavity for containing a second liquid;

[0009] a first delivery pipeline, connected to the first liquid storage tank, for delivering the first liquid;

[0010] a second delivery pipeline, connected to the second liquid storage tank, for delivering the second liquid;

[0011] a liquid mixing device, wherein the first delivery pipeline and the second delivery pipeline are respectively connected to the liquid mixing device to mix the first liquid and the second liquid and output them;

[0012] a heating device, configured to heat the first liquid in the first delivery pipeline or the second liquid in the second delivery pipeline;

[0013] a heat exchange tube assembly, wherein the heat exchange tube assembly is provided in the first liquid storage cavity and / or the second liquid storage cavity;

[0014] A heat exchange branch pipe, wherein the heat exchange tube assembly is arranged on the heat exchange branch pipe, and the heat exchange branch pipe is used to transport one of the first liquid and the second liquid heated by the heating device to the heat exchange tube assembly located in the liquid storage tank of the other liquid and reflux it, and\or, to reflux one of the first liquid and the second liquid heated by the heating device and transport the other to the heat exchange tube assembly located in the liquid storage tank of the heated one and reflux it.

[0015] In some embodiments, the heat exchange tube assembly includes a first heat exchange tube assembly and a second heat exchange tube assembly, the heat exchange branch pipeline includes a first heat exchange branch pipeline and a second heat exchange branch pipeline, the first heat exchange tube assembly is arranged on the first heat exchange branch pipeline, and the second heat exchange tube assembly is arranged on the second heat exchange branch pipeline;

[0016] The first heat exchange tube assembly is arranged in the second liquid storage tank, the first heat exchange branch pipeline connects the first delivery pipeline and the first liquid storage tank, the second heat exchange tube assembly is arranged in the first liquid storage tank, and the second heat exchange branch pipeline connects the second delivery pipeline and the second liquid storage tank.

[0017] In some embodiments, the heating device is used to heat the first liquid in the first delivery pipeline, and the first heat exchange branch pipeline is used to return the heated first liquid to the first liquid storage tank.

[0018] In some embodiments, the fluid circuit system further comprises:

[0019] a first switch valve, arranged in parallel with the first heat exchange tube assembly on the first heat exchange branch pipe; and\or, a second switch valve, arranged on the first heat exchange branch pipe to selectively connect or close the first heat exchange branch pipe.

[0020] In some embodiments, the first heat exchange tube assembly and the second heat exchange tube assembly are both coil structures or circuitous structures.

[0021] In some embodiments, the liquid system includes a cleaning pipeline and a third switching valve, the cleaning pipeline connects the first delivery pipeline and the second delivery pipeline, and the third switching valve is arranged in the cleaning pipeline to selectively open or close the cleaning pipeline, so that the second liquid enters the first delivery pipeline or the first liquid enters the second delivery pipeline.

[0022] In some embodiments, the liquid system includes a first safety line and a first safety valve, the first safety line connects the first delivery line and the first heat exchange branch line, and the first safety valve is arranged in the first safety line to selectively open or close the first safety line according to the pressure in the first safety line.

[0023] In some embodiments, the first liquid is water, and the second liquid is de-icing fluid.

[0024] In some embodiments, the heat exchange tube assembly includes a heat exchange coil and an outer clamp, the heat exchange coil extends in a spiral shape and is connected to the heat exchange branch pipe, the outer clamp is wrapped around the outside of the heat exchange coil, and a mounting portion is provided on the side of the outer clamp facing away from the heat exchange coil, and the mounting portion is detachably connected to the inner wall of the first liquid storage chamber or the inner wall of the second liquid storage chamber.

[0025] In some embodiments, the outer clamp includes two telescopic adjustment members and two arc-shaped hoop plates, the arc-shaped hoop plates extend along the circumference of the heat exchange coil, the telescopic adjustment member is connected between the two arc-shaped hoop plates, and the two telescopic adjustment members are respectively located at one end of the arc-shaped hoop plates along the circumference to adjust the size of the space enclosed by the two arc-shaped hoop plates.

[0026] In some embodiments, the heat exchange tube assembly includes an inner lining plate, which extends axially along the heat exchange coil and is located on the inner side of the heat exchange coil. The inner lining plate is connected to at least two outer walls of the heat exchange coil.

[0027] In some embodiments, there are two inner lining plates, which are respectively located on opposite radial sides of the heat exchange coil. The heat exchange tube assembly includes an inner hoop plate, which is bent into an arc shape and is elastic. The two ends of the inner hoop plate along the arc direction are respectively connected to the corresponding inner lining plates.

[0028] In some embodiments, the heat exchange tube assembly includes an interface fixing plate, the interface fixing plate includes an axial limiting portion and a radial limiting portion, the axial limiting portion extends along the axial direction of the heat exchange coil, the radial limiting portion is located at one end of the axial limiting portion in the axial direction and extends along the radial direction of the heat exchange coil, the axial limiting portion is fixed to the outside of the heat exchange coil, and the end of the heat exchange coil abuts against the radial limiting portion in the axial direction.

[0029] An embodiment of the present invention further provides a deicing vehicle, comprising a chassis and the fluid circuit system of any one of the aforementioned embodiments, wherein the chassis is used to carry the fluid circuit system.

[0030] The liquid circuit system in the embodiment of the present invention, by providing a heat exchange tube assembly and a heat exchange branch pipe, enables one of the first liquid and the second liquid heated by the heating device to preheat the other through heat exchange, so that the first liquid and the second liquid are both heated before entering the mixing device, thereby achieving the purpose of simultaneously increasing the temperature of the first liquid and the second liquid transported to the mixing device and reducing the temperature difference between the two, which is conducive to the temperature of the mixed liquid output by the mixing device reaching the target temperature faster, and effectively solves the problem that the heat exchange time is short and the temperature of the output mixed liquid is difficult to meet the target temperature requirement after the first liquid and the second liquid enter the mixing device and then undergo heat exchange, thereby improving the heating efficiency and de-icing efficiency, especially in cold environments, effectively reducing the operating time required for the liquid circuit system to reach the target temperature; at the same time, only one heating device needs to be provided in the liquid circuit system to achieve the purpose of heating both the first liquid and the second liquid, thereby reducing the energy consumption of the liquid circuit system. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of a fluid system in one embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of a heat exchange tube assembly in an embodiment of the present invention at a first viewing angle;

[0033] Figure 3 for Figure 2 Schematic diagram of the middle heat exchange tube assembly from a second perspective;

[0034] Figure 4 for Figure 2 Schematic diagram of the heat exchange tube assembly from a third perspective.

[0035] Description of Reference Numerals

[0036] First liquid storage tank 10; first liquid storage chamber 10a; second liquid storage tank 20; second liquid storage chamber 20a; first delivery pipeline 30; first main pump 31; second delivery pipeline 40; second main pump 41; liquid mixing device 50; heating device 60; heat exchange tube assembly 70; first heat exchange tube assembly 71; second heat exchange tube assembly 72; heat exchange coil 73; outer clamp 74; arc hoop plate 741; connecting portion 742; telescopic adjustment member 743; mounting plate 744; inner lining plate 75; inner hoop plate 7 6; interface fixing plate 77; heat exchange branch pipeline 80; first heat exchange branch pipeline 81; second heat exchange branch pipeline 82; fourth on-off valve 821; first on-off valve 90; second on-off valve 91; cleaning pipeline 92; third on-off valve 921; first safety pipeline 93; first safety valve 931; second safety pipeline 94; second safety valve 941; waste liquid tank 95; third liquid storage tank 96; third liquid storage chamber 96a; third delivery pipeline 97; injection device 98; fourth delivery pipeline 99 DETAILED DESCRIPTION

[0037] It should be noted that, unless there is a conflict, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed description in the specific implementation method should be understood as an explanation of the purpose of this application and should not be regarded as an improper restriction on this application.

[0038] In the description of this application, the "vertical direction", "axial" orientation or position relationship is based on the attached Figure 2 Regarding the orientation or positional relationship shown, it should be understood that these orientation terms are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0039] An embodiment of the present invention provides a fluid circuit system for spraying a liquid having a deicing or anti-icing effect onto an object to be de-iced of equipment such as an aircraft to achieve the purpose of de-icing.

[0040] See Figure 1 The liquid circuit system includes a first liquid storage tank 10, a second liquid storage tank 20, a first delivery pipeline 30, a second delivery pipeline 40, a liquid mixing device 50, a heating device 60, a heat exchange tube assembly 70 and a heat exchange branch pipeline 80.

[0041] The first liquid storage tank 10 is provided with a first liquid storage cavity 10a, and the first liquid storage cavity 10a is used to contain the first liquid.

[0042] The second liquid storage tank 20 is provided with a second liquid storage cavity 20a, and the second liquid storage cavity 20a is used to contain the second liquid.

[0043] It is understandable that the first liquid and the second liquid may have different compositions, for example, one may be water and the other may be de-icing fluid.

[0044] The first delivery pipeline 30 is connected to the first liquid storage tank 10 and is used for delivering the first liquid in the first liquid storage tank 10 .

[0045] The second delivery pipeline 40 is connected to the second liquid storage tank 20 and is used for delivering the second liquid in the second liquid storage tank 20 .

[0046] The first delivery pipeline 30 and the second delivery pipeline 40 are respectively connected to the liquid mixing device 50 to mix the first liquid and the second liquid and then output them. That is, the first delivery pipeline 30 delivers the first liquid to the liquid mixing device 50, and the second delivery pipeline 40 delivers the second liquid to the liquid mixing device 50, so that the first liquid and the second liquid are mixed in the liquid mixing device 50 to obtain the mixed liquid that is ultimately required to be sprayed onto the object to be de-iced and output.

[0047] It should be noted that the principle and related structure of the liquid mixing device 50 for achieving liquid mixing have been applied in related technologies and will not be elaborated here.

[0048] The heating device 60 is used to heat the first liquid in the first delivery pipeline 30 or the second liquid in the second delivery pipeline 40. By heating the first liquid or the second liquid, on the one hand, the temperature of the first liquid or the second liquid is increased, the rate of molecular diffusion of the first liquid and the second liquid during mixing in the mixing device 50 is increased, and the mixing effect is improved; on the other hand, it is beneficial to increase the temperature of the mixed liquid output by the mixing device 50, so that after being sprayed onto the object to be de-iced, the ice melting rate can be increased.

[0049] The specific method of heating the first liquid or the second liquid by the heating device 60 is not limited, for example, resistance wire heating, fuel combustion heating, etc.

[0050] A heat exchange tube assembly 70 is disposed in the first liquid storage chamber 10a or the second liquid storage chamber 20a. The heat exchange tube assembly 70 is disposed on a heat exchange branch pipe 80. The heat exchange branch pipe 80 is used to transport the first or second liquid heated by the heating device 60 to the heat exchange tube assembly 70 located in the other liquid storage tank for reflux, or to reflux the first or second liquid heated by the heating device 60 and transport the other liquid to the heat exchange tube assembly 70 located in the heated liquid storage tank for reflux. Reflux refers to the return of the liquid to its original storage tank, i.e., the first liquid flows back to the first liquid storage tank 10 and the second liquid flows back to the second liquid storage tank 20.

[0051] That is to say, one of the first liquid and the second liquid enters the heat exchange branch pipe 80 after being heated by the heating device 60, and enters the heat exchange tube assembly 70 located in the first liquid storage tank 10 or the second liquid storage tank 20 where the other liquid is stored through the heat exchange branch pipe 80. Through the heat exchange tube assembly 70, heat exchange occurs between the first liquid and the second liquid, thereby increasing the temperature of the one that has not been heated by the heating device 60; at the same time, the one heated by the heating device 60 flows out of the heat exchange tube assembly 70 and returns to the first liquid storage chamber 10a or the second liquid storage chamber 20a where it was originally stored through the heat exchange branch pipe 80, thereby increasing the temperature of the liquid that has not entered the heating device 60.

[0052] Specifically, the following situations are included:

[0053] 1) The heating device 60 is used to heat the first liquid in the first delivery pipe 30. The heat exchange tube assembly 70 is disposed in the second liquid storage chamber 20a. The heat exchange branch pipe 80 connects the first delivery pipe 30 and the heat exchange tube assembly 70 so that the heated first liquid enters the heat exchange tube assembly 70 and exchanges heat with the second liquid in the second liquid storage chamber 20a.

[0054] 2) The heating device 60 is used to heat the first liquid in the first delivery pipe 30. The heat exchange tube assembly 70 is disposed in the first liquid storage chamber 10a. A portion of the heat exchange branch pipe 80 connects the first delivery pipe 30 and the first liquid storage chamber 10a so that the heated first liquid flows back to the first liquid storage chamber 10a. Another portion of the heat exchange branch pipe 80 connects the heat exchange tube assembly 70 and the second liquid storage chamber 20a so that the second liquid enters the heat exchange tube assembly 70 and exchanges heat with the first liquid in the first liquid storage chamber 10a.

[0055] 3) The heating device 60 is used to heat the first liquid in the first delivery pipe 30. A heat exchange tube assembly 70 is provided in each of the first liquid storage chamber 10a and the second liquid storage chamber 20a. A portion of the heat exchange branch pipe 80 connects the first delivery pipe 30 and the heat exchange tube assembly 70 located in the second liquid storage chamber 20a, and another portion of the heat exchange branch pipe 80 connects the second delivery pipe 30 and the heat exchange tube assembly 70 located in the first liquid storage chamber 10a. The heated first liquid enters the heat exchange tube assembly 70 located in the second liquid storage chamber 20a, exchanges heat with the second liquid, and then flows back to the first liquid storage chamber 10a. In addition, the second liquid in the second liquid storage chamber 20a enters the other heat exchange tube assembly 70 located in the first liquid storage chamber 10a to exchange heat with the first liquid.

[0056] 4) The heating device 60 is used to heat the second liquid in the second delivery pipe 40. The heat exchange tube assembly 70 is disposed in the first liquid storage chamber 10a. The heat exchange branch pipe 80 connects the second delivery pipe 30 and the heat exchange tube assembly 70 so that the heated second liquid enters the heat exchange tube assembly 70 and exchanges heat with the first liquid in the first liquid storage chamber 10a.

[0057] 5) The heating device 60 is used to heat the second liquid in the second delivery pipe 40. The heat exchange tube assembly 70 is disposed in the second liquid storage chamber 20a. A portion of the heat exchange branch pipe 80 connects the second delivery pipe 40 and the second liquid storage chamber 20a so that the heated second liquid flows back to the second liquid storage chamber 20a. Another portion of the heat exchange branch pipe 80 connects the heat exchange tube assembly 70 and the first liquid storage chamber 10a so that the first liquid enters the heat exchange tube assembly 70 and exchanges heat with the second liquid in the second liquid storage chamber 20a.

[0058] 6) The heating device 60 is used to heat the second liquid in the second delivery pipe 40. A heat exchange tube assembly 70 is provided in each of the first liquid storage chamber 10a and the second liquid storage chamber 20a. A portion of the heat exchange branch pipe 80 connects the first delivery pipe 30 and the heat exchange tube assembly 70 located in the second liquid storage chamber 20a, and another portion of the heat exchange branch pipe 80 connects the second delivery pipe 30 and the heat exchange tube assembly 70 located in the first liquid storage chamber 10a. The heated first liquid enters the heat exchange tube assembly 70 located in the second liquid storage chamber 20a, exchanges heat with the second liquid, and then flows back to the first liquid storage chamber 10a. In addition, the second liquid in the second liquid storage chamber 20a enters the other heat exchange tube assembly 70 located in the first liquid storage chamber 10a to exchange heat with the first liquid.

[0059] It can be understood that at least a portion of the liquid in the first delivery pipeline 30 or the second delivery pipeline 40 is delivered to the heat exchange branch pipeline 80 .

[0060] The liquid circuit system in the embodiment of the present invention, by providing a heat exchange tube assembly 70 and a heat exchange branch pipe 80, enables one of the first liquid and the second liquid heated by the heating device 60 to preheat the other through heat exchange, so that the first liquid and the second liquid are both heated before entering the liquid mixing device 50, thereby achieving the purpose of simultaneously increasing the temperature of the first liquid and the second liquid transported to the liquid mixing device 50 and reducing the temperature difference between the two, which is conducive to the temperature of the mixed liquid output by the liquid mixing device 50 reaching the target temperature more quickly, and effectively solves the problem that the heat exchange time is short and the temperature of the output mixed liquid is difficult to meet the target temperature requirement after the first liquid and the second liquid enter the liquid mixing device 50. It improves the heating efficiency and deicing efficiency, especially in cold environments, and effectively reduces the operating time required for the liquid circuit system to reach the target temperature. At the same time, only one heating device 60 needs to be provided in the liquid circuit system to achieve the purpose of heating both the first liquid and the second liquid, thereby reducing the energy consumption of the liquid circuit system.

[0061] It is understandable that a first main pump 31 is provided in the first delivery pipeline 30 to draw the first liquid from the first liquid storage chamber 10 a and drive the first liquid to flow in the first delivery pipeline 30 .

[0062] It is understandable that a second main pump 41 is provided in the second delivery pipeline 40 to draw the second liquid from the second liquid storage chamber 20 a and drive the second liquid to flow in the second delivery pipeline 40 .

[0063] The specific types of the first main pump 31 and the second main pump 41 are not limited, and they can be fixed-displacement pumps or variable-displacement pumps.

[0064] The first main pump 31 and the second main pump 41 may be diaphragm pumps.

[0065] It is understandable that the ratio of the first liquid and the second liquid in the input mixing device 50 can be adjusted by changing the output flow of the first main pump 31 and the second main pump 41, so as to adapt to the needs of different deicing operation scenarios and expand the scope of application of the liquid circuit system.

[0066] It is understandable that, under the driving action of the first liquid in the first delivery pipeline 30 and the driving action of the second liquid in the second delivery pipeline 40 , the first liquid or the second liquid can flow in the heat exchange branch pipeline 80 .

[0067] It is understandable that heat exchange between the first liquid and the second liquid can occur in both the first liquid storage tank 10 and the second liquid storage tank 20 to further improve heat utilization efficiency.

[0068] Specifically, see Figure 1 The heat exchange tube assembly 70 includes a first heat exchange tube assembly 71 and a second heat exchange tube assembly 72, and the heat exchange branch pipeline 80 includes a first heat exchange branch pipeline 81 and a second heat exchange branch pipeline 82. The first heat exchange tube assembly 71 is arranged on the first heat exchange branch pipeline 81, and the second heat exchange tube assembly 72 is arranged on the second heat exchange branch pipeline 82; the first heat exchange tube assembly 71 is arranged in the second liquid storage tank 20, and the first heat exchange branch pipeline 81 connects the first delivery pipeline 30 and the first liquid storage tank 10. The second heat exchange tube assembly 72 is arranged in the first liquid storage tank 10, and the second heat exchange branch pipeline 82 connects the second delivery pipeline 40 and the second liquid storage tank 20.

[0069] After one of the first and second liquids heated by the heating device 60 flows back to its original storage tank through the corresponding first heat exchange branch pipe 81 or second heat exchange branch pipe 82, causing the temperature of the liquid in the original storage tank to rise, the liquid can then exchange heat with the heat exchange branch pipe 80 located in the storage tank for conveying the other liquid, thereby raising the temperature of the other liquid therein. Furthermore, the return of the other liquid through the heat exchange branch pipe 80 achieves the purpose of raising the temperature of the liquid in the storage tank. That is, in the first storage tank 10, the first liquid in the first liquid storage chamber 10a can exchange heat with the second liquid in the second heat exchange tube assembly 72 located in the first liquid storage chamber 10a. Simultaneously, in the second storage tank 20, the second liquid in the second liquid storage chamber 20a can exchange heat with the first liquid in the first heat exchange tube assembly 71 located in the second liquid storage chamber 20a, thereby further improving the heat exchange efficiency and accelerating the temperature rise rate.

[0070] It can be understood that a switch valve is provided in both the first delivery pipeline 30 and the second delivery pipeline 40 to selectively connect or close the first delivery pipeline 30 and the second delivery pipeline 40, so as to achieve the purpose of allowing only one of the first liquid or the second liquid to enter the mixing device 50, that is, only one liquid is output, thereby adapting to the needs of different deicing operation scenarios and expanding the scope of application of the liquid system.

[0071] In some embodiments, see Figure 1 The heating device 60 is used to heat the first liquid in the first delivery pipeline 30 , and the first heat exchange branch pipeline 81 is used to return the heated first liquid to the first liquid storage tank 10 .

[0072] The first liquid is output from the first liquid storage chamber 10a through the first delivery pipeline 30 and is heated by the heating device 60. The heated first liquid can be partially diverted to the liquid mixing device 50, and the other part can be diverted to the first heat exchange branch pipeline 81 and flow into the first heat exchange pipe assembly 71 located in the second liquid storage chamber 20a, thereby transferring heat to the second liquid in the second liquid storage chamber 20a, and then return to the first liquid storage chamber 10a through the first heat exchange branch, thereby transferring heat to the liquid that has not yet flowed out of the first liquid storage chamber 10a. The first liquid is heated and its temperature is increased; at the same time, the second liquid in the second liquid storage chamber 20a flows into the second heat exchange tube assembly 72 located in the first liquid storage chamber 10a through the second heat exchange branch pipe 82, so that it can exchange heat with the first liquid in the first liquid storage chamber 10a, and then return to the second liquid storage chamber 20a through the second heat exchange branch pipe 82, thereby finally increasing the temperature of the first liquid in the first liquid storage chamber 10a and the second liquid in the second liquid storage chamber 20a, which is beneficial for the mixed liquid output from the mixing device 50 to meet the target temperature requirement.

[0073] It is understandable that under abnormal conditions such as abnormal pumping pressure and excessively high heating temperature, excessive pressure may occur in the liquid system, causing leakage risks. Therefore, it is necessary to reduce the probability of excessive pressure.

[0074] For example, see Figure 1The liquid circuit system also includes a first on-off valve 90, which is arranged in parallel with the first heat exchange tube assembly 71 on the first heat exchange branch pipe 81. When the first on-off valve 90 is in the on state, at least a portion of the first liquid in the first heat exchange branch pipe 81 does not enter the first heat exchange tube assembly 71 but flows directly back into the first liquid storage chamber 10a. Therefore, when the pressure of the first liquid in the first heat exchange tube assembly 71 is too high, for example, due to excessive temperature of the first liquid causing vaporization, or excessive first liquid entering the first heat exchange branch pipe 81, the first on-off valve 90 is turned on, thereby reducing the probability of excessive pressure of the first liquid damaging the first heat exchange tube assembly 71 or even leaking into the second liquid storage chamber 20a, thereby protecting the liquid circuit system.

[0075] The first switch valve 90 is actively controlled, and its control method is not limited, and can be manually controlled or electrically controlled.

[0076] In some embodiments, the liquid circuit system also includes a first one-way valve, a first switch valve 90, a first one-way valve and a first heat exchange tube assembly 71 are arranged in parallel on the first heat exchange branch pipe 81, so that when the first heat exchange branch pipe 81 meets the preset first safety pressure, the first one-way valve meets the opening pressure requirement and is passively opened, and at least part of the first liquid in the first heat exchange branch pipe 81 does not enter the first heat exchange tube assembly 71 but directly flows back to the first liquid storage chamber 10a, thereby achieving the purpose of jointly controlling the first liquid to directly flow back to the first liquid storage chamber 10a in an active and passive manner, thereby improving the safety redundancy of the liquid circuit system.

[0077] It is understandable that under some conditions of use, the first liquid and the second liquid do not need to exchange heat. For example, in the summer, they are used for cleaning equipment such as aircraft.

[0078] For example, see Figure 1 The liquid circuit system further includes a second on-off valve 91, which is disposed on the first heat exchange branch pipe 81 to selectively open or close the first heat exchange branch pipe 81, allowing the first liquid to flow directly into the liquid mixing device 50 without entering the first heat exchange branch pipe 81. Therefore, in some climates, such as the hot summer season, there is no need to heat the first liquid, thus reducing the flow path length of the first liquid and improving the delivery efficiency.

[0079] The second switch valve 91 is actively controlled, and its control method is not limited, and can be manually controlled or electrically controlled.

[0080] For example, see Figure 1 The liquid circuit system further includes a fourth switch valve 821 , which is disposed on the second heat exchange branch pipeline 82 to selectively connect or close the second heat exchange branch pipeline 82 .

[0081] The fourth switch valve 821 is actively controlled, and its control method is not limited, and can be manual control or electronic control.

[0082] The specific structure of the heat exchange tube assembly 70 is conducive to achieving heat exchange between the first liquid and the second liquid.

[0083] In some embodiments, the first heat exchange tube assembly 71 and the second heat exchange tube assembly 72 are both coil structures or circuitous structures, thereby increasing the flow path length of the first liquid in the first heat exchange tube assembly 71 and the flow path of the second liquid in the second heat exchange tube assembly 72, thereby increasing the heat exchange area and heat exchange time between the first liquid and the second liquid, and improving the heat exchange efficiency.

[0084] It is understandable that in cold weather conditions, ice may form inside the liquid circuit system, thereby affecting the normal operation of the liquid circuit system. Therefore, before the liquid mixing device 50 outputs the mixed liquid, the liquid circuit system needs to be de-iced.

[0085] For example, see Figure 1 The liquid system includes a cleaning line 92, which connects the first delivery line 30 and the second delivery line 40. A third on-off valve 921 is configured in the cleaning line to selectively open or close the cleaning line 92, allowing the second liquid to enter the first delivery line 30 or the first liquid to enter the second delivery line 40. When the third on-off valve 921 is in the on state, the second liquid in the second delivery line 40 can enter the first delivery line 30, or the first liquid in the first delivery line 30 can enter the second delivery line 40, allowing the first liquid or the second liquid with deicing function to flow through the second delivery line 40 or the first delivery line 30 where ice has formed, thereby removing the ice. After the operation is completed, the third on-off valve 921 is closed.

[0086] In some embodiments, see Figure 1 The second liquid is deicing liquid, and the connection position between the cleaning pipeline 92 and the first delivery pipeline 30 is located upstream of the first main pump 31 and the heating device 60, so that the deicing liquid entering the first delivery pipeline 30 can remove ice in the first main pump 31 and the heating device 60.

[0087] In some embodiments, see Figure 1The liquid circuit system includes a first safety line 93 and a first safety valve 931. The first safety line 93 connects the first delivery line 30 and the first heat exchange branch line 81. The first safety valve 931 is disposed in the first safety line 93 to selectively open or close the first safety line 93 according to the pressure within the first safety line 93. Therefore, if the pressure in the first delivery line 30 is excessive and reaches a second preset safety pressure without heating the first liquid, the first safety valve 931, driven by the pressure on its high-pressure side, opens the first safety line 93, allowing the first liquid to enter the first heat exchange branch and flow back into the first liquid storage tank 10. This reduces the pressure in the first delivery line 30, lowering the chance of leakage in the first delivery line 30 or damage to the liquid mixing device 50, improving safety redundancy, and reducing waste of the first liquid.

[0088] The specific type of the first safety valve 931 is not limited, for example, a one-way valve, a relief valve, etc.

[0089] In some embodiments, see Figure 1 The liquid circuit system includes a second safety line 94, a second safety valve 941 and a waste liquid tank 95. The waste liquid tank 95 is provided with a waste liquid chamber. The second safety line 94 connects the waste liquid chamber with the first delivery line 30. A second safety valve 941 is provided in the second safety line 94 to selectively connect or close the second safety line 94 according to the pressure in the second safety line 94, and the opening pressure of the second safety valve 941 is greater than the opening pressure of the first safety valve 931.

[0090] When the pressure in the first delivery pipeline 30 increases to the second preset safety pressure, the first safety valve 931 is first triggered to connect, thereby utilizing the first heat exchange branch pipeline 81 and the first liquid storage chamber 10a to reduce the pressure in the first delivery pipeline 30; if the pressure in the first delivery pipeline 30 continues to increase to the third preset safety pressure, the second safety valve 941 is triggered to connect, so that the first liquid is directly discharged into the waste liquid tank 95 through the second safety pipeline 94, thereby further reducing the pressure in the first delivery pipeline 30 and improving the safety redundancy of the liquid system.

[0091] The specific type of the second safety valve 941 is not limited, for example, a one-way valve, a relief valve, etc.

[0092] The first liquid is water, which has a large specific heat capacity and can absorb more heat, thereby improving the ice melting effect.

[0093] The second liquid is a deicing liquid, which is used to reduce the adhesion between ice and the surface of the object to be deiced or lower the freezing temperature of water on the surface of the object to be deiced, thereby facilitating the peeling or melting of ice from the surface of the object to be deiced and improving the deicing effect.

[0094] The specific composition of the de-icing fluid is not limited, such as methanol, ethylene glycol, etc.

[0095] In some embodiments, see Figure 1 The liquid system includes a third delivery pipeline 97 and a spraying device 98 for spraying liquid. The third delivery pipeline 97 connects the liquid mixing device 50 and the spraying device 98 to transport the mixed liquid discharged by the liquid mixing device 50 to the spraying device 98. In other words, the spraying device 98 can spray the mixed liquid output by the liquid mixing device 50.

[0096] In some embodiments, see Figure 1 The liquid circuit system includes a third liquid storage tank 96 and a fourth delivery pipeline 99. The third liquid storage tank 96 is provided with a third liquid storage chamber 96a for storing the third liquid. The fourth delivery pipeline 99 connects the third liquid storage chamber 96a and the third delivery pipeline 97 so that the injection device 98 can inject the third liquid, and the third liquid does not need to be heated.

[0097] After deicing is achieved by spraying the mixed liquid onto the object to be deiced, the liquid mixing device 50 stops outputting the mixed liquid, and the spraying device 98 sprays the third liquid to suppress the formation of new ice on the object to be deiced.

[0098] The specific type of anti-icing fluid is not limited, such as propylene glycol, diethylene glycol, etc.

[0099] The specific type of the spraying device 98 is not limited, such as a water gun, a water cannon, etc.

[0100] The specific structure of the heat exchange tube assembly 70 is not limited.

[0101] For example, see Figure 2 The heat exchange tube assembly 70 includes a heat exchange coil 73 and an outer clamp 74. The heat exchange coil 73 extends in a spiral shape and is connected to the heat exchange branch pipe 80, so that when the space size is constant, the overall length of the heat exchange coil 73 is extended, thereby improving the heat exchange efficiency.

[0102] The outer clamp 74 is wrapped around the outside of the heat exchange coil 73 to constrain the shape of the heat exchange coil 73 and keep the heat exchange coil 73 in a spiral shape. At the same time, during the installation and transportation process, the heat exchange coil 73 can be moved through the outer clamp 74, reducing the probability of the heat exchange coil 73 being deformed or damaged by stress.

[0103] A mounting portion is provided on the side of the outer clamp 74 facing away from the heat exchange coil 73 to prevent interference between the heat exchange coil 73 and the mounting portion, facilitating access to the mounting portion during installation. The mounting portion is detachably connected to the inner wall of the first liquid storage chamber 10a or the inner wall of the second liquid storage chamber 20a, facilitating maintenance and replacement of the heat exchange tube assembly 70. Furthermore, when installed, the heat exchange tube assembly 70 is directly subjected to force from the mounting portion and transmitted to the outer clamp 74, preventing direct force from being applied to the heat exchange coil 73. Furthermore, by increasing the contact area between the outer clamp 74 and the heat exchange coil 73, the pressure on the heat exchange coil 73 is reduced, thereby lowering the chance of damage to the heat exchange coil 73.

[0104] The specific material of the heat exchange coil 73 is not limited, such as stainless steel, copper, etc., so that it has good thermal conductivity and ductility, and is easy to bend into a spiral shape.

[0105] In some embodiments, see Figure 2 In the spiral structure formed by the heat exchange coil 73, adjacent coils are axially fitted together to further improve space utilization.

[0106] It is understandable that the size of the space surrounded by the inner side of the outer clamp 74 can be adjusted to accommodate the size of the heat exchange coil 73 .

[0107] The specific number of the outer clamps 74 is not limited, and can be one or more.

[0108] Specifically, see Figure 2 and Figure 3 The outer clamp 74 includes two telescopic adjustment members 743 and two arc-shaped hoop plates 741. The arc-shaped hoop plates 741 extend along the circumference of the heat exchange coil 73. The telescopic adjustment member 743 is connected between the two arc-shaped hoop plates 741, and the two telescopic adjustment members 743 are respectively located at one end of the arc-shaped hoop plates 741 along the circumference. The telescopic adjustment member 743 is extended and retracted to adjust the size of the space enclosed by the two arc-shaped hoop plates 741, thereby achieving the fit between the arc-shaped hoop plates 741 and the heat exchange coil 73 and constraining the installation position of the heat exchange coil 73.

[0109] The specific structure of the telescopic adjustment member 743 is not limited.

[0110] In some embodiments, see Figure 2 and Figure 3The two ends of the arc-shaped hoop plate 741 are bent outward along the spiral direction to form a connecting portion 742. The connecting portion 742 is provided with a connecting through-hole. The telescopic adjustment member 743 includes a bolt and a nut. The bolt passes through the connecting through-holes of the two arc-shaped hoop plates 741 and is connected to the nut. By changing the screwing position between the bolt and the nut, the spacing between the connecting portions 742 on the two connected arc-shaped hoop plates 741 is changed, thereby changing the size of the space enclosed by the outer clamp 74. At the same time, the connecting portion 742 is located on the side of the arc-shaped hoop plate 741 facing away from the heat exchange coil 73, providing more ample working space for adjusting the bolt and nut, facilitating adjustment of the bolt and nut during installation and removal.

[0111] The specific method of forming the mounting portion is not limited.

[0112] For example, see Figures 2 to 4 A mounting plate 744 is provided on the outer side of the arc hoop plate 741. The mounting plate 744 is provided with a mounting through hole running through in the vertical direction to form a mounting portion. The screws pass through the mounting through hole and are connected to the inner wall of the first liquid storage chamber 10a, so that the outer hoop plate bears the weight of the heat exchange coil 73 in the vertical direction.

[0113] It is understandable that it is necessary to reduce the probability of the heat exchange coil 73 being bent and damaged.

[0114] Specifically, see Figure 2 and Figure 3 Heat exchange tube assembly 70 includes an inner lining plate 75, which extends axially along heat exchange coil 73 and is located inside the coil 73 to prevent interference with the outer hoop plate. Lining plate 75 is connected to the outer walls of at least two turns of heat exchange coil 73, suppressing any bending of the coil 73 and thereby improving the overall structural strength of heat exchange tube assembly 70.

[0115] In some embodiments, the axial dimension of the inner lining plate 75 is not less than the axial dimension of the heat exchange coil 73 , so that the inner lining plate 75 is connected to each circle of the heat exchange coil 73 , thereby better suppressing the tendency of the heat exchange coil 73 to bend.

[0116] There is no limitation on the specific method for connecting the lining plate 75 and the heat exchange coil 73 , such as welding.

[0117] The specific number of the lining plates 75 is not limited.

[0118] For example, see Figure 3 There are two inner lining plates 75, and the two inner lining plates 75 are respectively located on opposite sides of the radial direction of the heat exchange coil 73, thereby applying a radially symmetrical constraint force along the spiral to the heat exchange coil 73, thereby better improving the overall structural strength of the heat exchange tube assembly 70.

[0119] It can be understood that the heat exchange coil 73 is subjected to a force from outside to inside by the outer clamp 74 .

[0120] In some embodiments where there are two inner lining plates 75, see Figure 2 and Figure 3 The heat exchange tube assembly 70 includes an inner hoop plate 76, which is bent into an arc shape and has elastic properties. The two ends of the inner hoop plate 76 along the arc direction are connected to the corresponding inner lining plate 75. The radial force applied by the inner hoop plate 76 on the inner lining plate 75 from the inside to the outside acts on the heat exchange coil 73, balancing the force applied from the outside to the inside by the outer clamp 74, thereby better maintaining the spiral shape of the heat exchange coil 73.

[0121] In some embodiments, see Figure 2 and Figure 4 The heat exchange tube assembly 70 includes an interface fixing plate 77, which includes an axial limiting portion and a radial limiting portion. The axial limiting portion extends along the axial direction of the heat exchange coil 73, and the radial limiting portion is located at one end of the axial limiting portion in the axial direction and extends along the radial direction of the heat exchange coil 73. The axial limiting portion is fixed to the outer side of the heat exchange coil 73, and the end of the heat exchange coil 73 abuts against the radial limiting portion in the axial direction.

[0122] The interface fixing plate 77 suppresses the tendency of the end of the heat exchange coil 73 to move away from other parts of the heat exchange coil 73 in the axial direction, and the tendency of the end of the heat exchange coil 73 to move radially outward along the spiral, so that the position of the end of the heat exchange coil 73 is stable, which facilitates the connection between the end of the heat exchange coil 73 and the heat exchange branch pipe 80.

[0123] The specific method of connecting the interface fixing plate 77 and the heat exchange coil 73 is not limited, such as welding.

[0124] It is understandable that there are at least two interface fixing plates 77 , each located at one end of the heat exchange coil 73 .

[0125] In some embodiments where an inner lining plate 75 is provided, the interface fixing plate 77 is connected to the inner lining plate 75 to further improve the overall structural strength of the heat exchange tube assembly 70 through mutual constraint between the two.

[0126] An embodiment of the present invention further provides a deicing vehicle, which includes a chassis and the fluid system of any one of the aforementioned embodiments. The chassis is used to carry the fluid system so that the fluid system can be moved, thereby expanding the applicable scenarios of the fluid system.

[0127] The various embodiments / implementations provided in this application can be combined with each other without causing any contradiction.

[0128] The foregoing description is merely a preferred embodiment of the present application and is not intended to limit the present application. Persons skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A liquid circuit system for a de-icing vehicle, characterized in that: include: A first liquid storage tank is provided with a first liquid storage cavity for containing a first liquid; A second liquid storage tank is provided with a second liquid storage cavity for containing a second liquid; a first delivery pipeline, connected to the first liquid storage tank, for delivering the first liquid; a second delivery pipeline, connected to the second liquid storage tank, for delivering the second liquid; a liquid mixing device, wherein the first delivery pipeline and the second delivery pipeline are respectively connected to the liquid mixing device to mix the first liquid and the second liquid and output them; a heating device, configured to heat the first liquid in the first delivery pipeline or the second liquid in the second delivery pipeline; a heat exchange tube assembly, wherein the heat exchange tube assembly is provided in the first liquid storage cavity and / or the second liquid storage cavity; A heat exchange branch pipe, wherein the heat exchange tube assembly is arranged on the heat exchange branch pipe, and the heat exchange branch pipe is used to transport one of the first liquid and the second liquid heated by the heating device to the heat exchange tube assembly located in the liquid storage tank of the other liquid and reflux it, and\or, to reflux one of the first liquid and the second liquid heated by the heating device and transport the other to the heat exchange tube assembly located in the liquid storage tank of the heated one and reflux it.

2. The fluid circuit system according to claim 1, characterized in that: The heat exchange tube assembly includes a first heat exchange tube assembly and a second heat exchange tube assembly, the heat exchange branch pipeline includes a first heat exchange branch pipeline and a second heat exchange branch pipeline, the first heat exchange tube assembly is arranged on the first heat exchange branch pipeline, and the second heat exchange tube assembly is arranged on the second heat exchange branch pipeline; The first heat exchange tube assembly is arranged in the second liquid storage tank, the first heat exchange branch pipeline connects the first delivery pipeline and the first liquid storage tank, the second heat exchange tube assembly is arranged in the first liquid storage tank, and the second heat exchange branch pipeline connects the second delivery pipeline and the second liquid storage tank.

3. The fluid circuit system according to claim 2, characterized in that: The heating device is used to heat the first liquid in the first delivery pipeline, and the first heat exchange branch pipeline is used to return the heated first liquid to the first liquid storage tank.

4. The fluid circuit system according to claim 3, characterized in that: The fluid system further comprises: A first switch valve is provided on the first heat exchange branch pipeline in parallel with the first heat exchange tube assembly; and / or a second switch valve is provided on the first heat exchange branch pipeline to selectively connect or close the first heat exchange branch pipeline.

5. The fluid circuit system according to claim 2, characterized in that: The first heat exchange tube assembly and the second heat exchange tube assembly both have a coil structure or a circuitous structure.

6. The fluid circuit system according to claim 1, wherein: The liquid circuit system includes a cleaning pipeline and a third switch valve. The cleaning pipeline connects the first delivery pipeline and the second delivery pipeline. The third switch valve is arranged in the cleaning pipeline to selectively open or close the cleaning pipeline, allowing the second liquid to enter the first delivery pipeline or the first liquid to enter the second delivery pipeline.

7. The fluid circuit system according to claim 3, characterized in that: The liquid circuit system includes a first safety pipeline and a first safety valve. The first safety pipeline connects the first delivery pipeline and the first heat exchange branch pipeline. The first safety valve is arranged in the first safety pipeline to selectively open or close the first safety pipeline according to the pressure in the first safety pipeline.

8. The fluid path system according to any one of claims 1 to 7, characterized in that: The first liquid is water, and the second liquid is de-icing fluid.

9. The fluid circuit system according to claim 1, wherein: The heat exchange tube assembly includes a heat exchange coil and an outer clamp. The heat exchange coil extends in a spiral shape and is connected to the heat exchange branch pipe. The outer clamp is wrapped around the outside of the heat exchange coil. The side of the outer clamp facing away from the heat exchange coil is provided with a mounting portion. The mounting portion is detachably connected to the inner wall of the first liquid storage chamber or the inner wall of the second liquid storage chamber.

10. The fluid circuit system according to claim 9, characterized in that: The outer clamp includes two telescopic adjustment parts and two arc-shaped hoop plates. The arc-shaped hoop plates extend along the circumference of the heat exchange coil. The telescopic adjustment part is connected between the two arc-shaped hoop plates, and the two telescopic adjustment parts are respectively located at one end of the arc-shaped hoop plates along the circumference to adjust the size of the space enclosed by the two arc-shaped hoop plates.

11. The fluid circuit system according to claim 9, characterized in that: The heat exchange tube assembly includes an inner lining plate, which extends along the axial direction of the heat exchange coil and is located on the inner side of the heat exchange coil. The inner lining plate is connected to at least two turns of the heat exchange coil.

12. The fluid circuit system according to claim 11, characterized in that: There are two inner lining plates, which are respectively located on opposite sides of the heat exchange coil in the radial direction. The heat exchange tube assembly includes an inner hoop plate, which is bent into an arc shape and has elasticity. The two ends of the inner hoop plate along the arc direction are respectively connected to the corresponding inner lining plates.

13. The fluid circuit system according to claim 9, wherein: The heat exchange tube assembly includes an interface fixing plate, which includes an axial limiting portion and a radial limiting portion. The axial limiting portion extends along the axial direction of the heat exchange coil, and the radial limiting portion is located at one end of the axial limiting portion in the axial direction and extends along the radial direction of the heat exchange coil. The axial limiting portion is fixed to the outside of the heat exchange coil, and the end of the heat exchange coil abuts against the radial limiting portion in the axial direction.

14. A de-icing vehicle, characterized in that: It comprises a chassis and the fluid system according to any one of claims 1 to 13, wherein the chassis is used to carry the fluid system.

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