Fluid pressure relief device, tilt rotor and aircraft

Abstract

The utility model relates to a fluid pressure relief device, a tilt rotor and an aircraft, the fluid pressure relief device comprises a sleeve, a supporting plate, an elastic telescopic piece and a piston, the two ends of the sleeve are arranged in a through mode, the supporting plate and the sleeve are fixedly matched to form a compression cavity with an assembly opening, and the elastic telescopic piece is arranged in the compression cavity; one end of the elastic telescopic piece is connected to the supporting plate, and the other end of the elastic telescopic piece is connected to the piston; the end, provided with the assembly opening, of the sleeve is used for communicating with the cooling channel, and cooling liquid in the cooling channel and the elastic telescopic piece can act on the two ends of the piston correspondingly so that the piston can move in the compression cavity. According to the fluid pressure relief device, the tilt rotor and the aircraft, the problems that in the tilt rotor of the aircraft, an expansion box is difficult to install to relieve pressure of the cooling channel, and a pressure relief valve easily causes oil shortage of the cooling channel are solved.

Description

Technical Field

[0001] This application relates to the field of aircraft cooling system technology, and in particular to a fluid depressurization device, a tiltrotor, and an aircraft. Background Technology

[0002] In vehicle cooling systems, antifreeze is typically used as the cooling medium. To accommodate the volume changes caused by the thermal expansion and contraction of the antifreeze, an expansion tank is usually installed in the cooling system. When the antifreeze temperature rises, its volume expands, and the excess antifreeze enters the expansion tank for storage. Conversely, when the antifreeze temperature drops and its volume shrinks, the antifreeze in the expansion tank flows back into the cooling system to replenish the coolant. It's important to note that in commercial vehicles, the expansion tank is located at the highest point of the cooling system for easy venting, storage, and replenishment. Passenger vehicles often use an overflow reservoir (which functions similarly to the expansion tank) for the same purpose of replenishing and storing coolant.

[0003] In the field of aircraft (including but not limited to flying cars or drones), tiltrotor drive motors are typically cooled by cooling oil, which, like antifreeze, is subject to thermal expansion and contraction. However, tiltrotors have both vertical and horizontal attitudes. For example, in a flying car's tiltrotor, during takeoff, the tiltrotor's axis is vertical to provide upward thrust, while during horizontal flight, the axis is horizontal to provide forward thrust. Therefore, it is difficult to find a suitable highest position within the rotor for installing the expansion tank.

[0004] To address the difficulty of finding a suitable highest position within the rotor for installing the expansion tank, existing tilt rotors typically employ a pressure relief valve to release excess cooling oil, ensuring the pressure within the cooling channels remains within the normal range. However, while the pressure relief valve ensures the pressure within the cooling channels is within a safe range, the released cooling oil is difficult to replenish, leading to oil shortages in the cooling channels when the temperature drops. Utility Model Content

[0005] Therefore, it is necessary to provide a fluid pressure relief device, a tiltrotor, and an aircraft to solve the problems of difficulty in installing an expansion tank to relieve pressure on the cooling channel in a tiltrotor, and the problem that the pressure relief valve can easily lead to insufficient oil in the cooling channel.

[0006] The fluid pressure relief device provided in this application includes a sleeve, a support plate, an elastic telescopic member, and a piston. The two ends of the sleeve are through-type. The support plate and the sleeve are fixedly fitted together to form a compression chamber with an assembly opening. The elastic telescopic member is disposed in the compression chamber. One end of the elastic telescopic member is connected to the support plate, and the other end is connected to the piston. The piston and the inner wall of the compression chamber are in a movable sealing fit. The end of the sleeve with the assembly opening is used to connect to a cooling channel. The coolant in the cooling channel and the elastic telescopic member can act on both ends of the piston respectively, so that the piston can move in the compression chamber.

[0007] In one embodiment, a support plate is fixedly assembled to the middle of the sleeve, so that two compression chambers are formed inside the sleeve, defined as a first chamber and a second chamber respectively. The assembly opening includes a first opening and a second opening. The first opening is located at the end of the first chamber away from the support plate, and the second opening is located at the end of the second chamber away from the support plate. The elastic telescopic member includes a first telescopic member and a second telescopic member. The piston includes a first plug body and a second plug body. The first plug body is movably disposed in the first chamber. One end of the first telescopic member is connected to the support plate, and the other end is connected to the first plug body. The end of the sleeve with the first opening is used to connect to a cooling channel. The coolant in the cooling channel and the first telescopic member can act on both ends of the first plug body respectively, so that the first plug body can move in the first chamber. The second plug body is movably disposed in the second chamber. One end of the second telescopic member is connected to the support plate, and the other end is connected to the second plug body. The end of the sleeve with the second opening is used to connect to a cooling channel. The coolant in the cooling channel and the second telescopic member can act on both ends of the second plug body respectively, so that the second plug body can move in the second chamber.

[0008] In one embodiment, a support plate separates the first cavity and the second cavity;

[0009] Alternatively, the support plate may have a connecting hole through which the first cavity connects to the second cavity.

[0010] In one embodiment, the elastic coefficient of the second telescopic member is greater than that of the first telescopic member.

[0011] In one embodiment, both the first cavity and the second cavity are sealed cavities, and both the first cavity and the second cavity are vacuum cavities.

[0012] Alternatively, one or both of the first and second cavities may be provided with a first vent pipe that connects to the atmospheric environment, and the first vent pipe may be located on the side wall of the sleeve.

[0013] In one embodiment, a support plate is sealed at one end of the sleeve and fixedly assembled with the inner wall of the compression chamber, with the assembly opening located at the end of the compression chamber away from the support plate.

[0014] In one embodiment, the compression chamber is a sealed cavity, or a vacuum chamber;

[0015] Alternatively, the compression chamber may be equipped with a second vent pipe that connects to the atmospheric environment, and the second vent pipe may be located on the side wall of the sleeve.

[0016] In one embodiment, the fluid pressure relief device further includes a limiting block disposed at the assembly opening and engaging with the piston to prevent the piston from disengaging from the assembly opening.

[0017] This application also provides a tilting rotor, which includes an assembly body and a fluid pressure relief device as described in any of the above embodiments. The assembly body is provided with a cooling channel, which is connected to one end of the sleeve with an assembly opening. The coolant in the cooling channel and the elastic telescopic member can act on both ends of the piston respectively, so that the piston can move in the compression chamber.

[0018] This application also provides an aircraft comprising the tilt rotor described in the above embodiments.

[0019] Compared to existing technologies, the fluid pressure relief device, tiltrotor, and aircraft provided in this application, when the coolant expands due to heat, its pressure pushes the piston into the compression chamber, compressing the elastic expansion member to store energy. At this time, coolant exceeding the channel volume enters the temporary storage space formed by the sleeve. When the temperature drops, causing the coolant to contract, the elastic expansion member releases the stored energy, pushing the piston back to its original position and pumping the stored coolant back into the channel. The entire process automatically regulates the pressure through piston displacement, preventing both excessive pressure from damaging the system and coolant loss.

[0020] Compared to existing technologies, traditional pressure relief valves can only discharge coolant in one direction under overpressure. This solution achieves reversible storage and release of coolant through the synergistic action of an elastic telescopic component and a piston. Furthermore, the mechanical adjustment mechanism is not limited by installation orientation, effectively solving the installation difficulties caused by changes in the tilt rotor's attitude, while eliminating the risk of irreversible coolant loss. Additionally, the fluid pressure relief device is small in size, facilitating its installation within the tilt rotor. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A cross-sectional view of a fluid pressure relief device according to an embodiment of this application;

[0023] Figure 2 A cross-sectional view of a fluid pressure relief device according to another embodiment of this application;

[0024] Figure 3 A cross-sectional view of a fluid pressure relief device according to another embodiment provided in this application;

[0025] Figure 4 A cross-sectional view of a fluid pressure relief device according to another embodiment of this application;

[0026] Figure 5 A cross-sectional view of a fluid pressure relief device according to another embodiment provided in this application;

[0027] Figure 6 A cross-sectional view of a fluid pressure relief device according to another embodiment of this application.

[0028] Reference numerals: 100, sleeve; 110, compression chamber; 111, first chamber; 112, second chamber; 120, assembly opening; 121, first opening; 122, second opening; 130, second vent pipe; 140, first vent pipe; 200, support plate; 210, connecting hole; 300, elastic telescopic component; 310, first telescopic component; 320, second telescopic component; 400, piston; 410, first plug body; 420, second plug body. Detailed Implementation

[0029] Please see Figures 1-6 In one embodiment, the fluid pressure relief device includes a sleeve 100, a support plate 200, an elastic telescopic member 300, and a piston 400. The two ends of the sleeve 100 are through-type. The support plate 200 and the sleeve 100 are fixedly fitted together to form a compression chamber 110 with an assembly opening 120. The elastic telescopic member 300 is disposed in the compression chamber 110. One end of the elastic telescopic member 300 is connected to the support plate 200, and the other end is connected to the piston 400. The piston 400 and the inner wall of the compression chamber 110 are in a movable sealing fit.

[0030] The sleeve 100 refers to a hollow tubular structure, which can be made of stainless steel or aluminum alloy tubing, and its through-flow design allows for bidirectional flow of coolant. The support plate 200 is a partition fixed inside the sleeve 100, which can be achieved through welding or threaded connection, and is used to define the boundaries of the compression chamber 110. The elastic telescopic component 300 is a component with compression rebound characteristics, which can be made of bellows, helical springs, or rubber elastomers, and is used to store and release mechanical energy. The piston 400 is a sealing sliding component, which can be made of PTFE sealing rings in conjunction with a metal substrate, allowing axial displacement while maintaining a tight seal.

[0031] The sleeve 100 has an assembly opening 120 at one end for connecting to a cooling channel (not shown). The coolant (including but not limited to cooling oil and antifreeze) and the elastic telescopic member 300 in the cooling channel can act on both ends of the piston 400 respectively, so that the piston 400 can move in the compression chamber 110.

[0032] Specifically, when the pressure exerted by the coolant in the cooling channel on the piston 400 is greater than the thrust exerted by the elastic telescopic member 300 on the piston 400, the coolant can push the piston 400 to compress the elastic telescopic member 300 and cause the piston 400 to move toward the support plate 200.

[0033] When the pressure of the coolant in the cooling channel on the piston 400 is equal to the thrust of the elastic telescopic member 300 on the piston 400, the piston 400 remains stationary.

[0034] When the pressure exerted by the coolant in the cooling channel on the piston 400 is less than the thrust exerted by the elastic telescopic member 300 on the piston 400, the elastic telescopic member 300 can elastically reset and push the piston 400 to move away from the support plate 200.

[0035] It should be noted that when the piston 400 moves to the assembly opening 120, the elastic telescopic component 300 is fully reset. At this time, the piston 400 is not subjected to the thrust of the elastic telescopic component 300.

[0036] Specifically, when the coolant expands due to heat, its pressure pushes the piston 400 into the compression chamber 110, compressing the elastic expansion member 300 to store energy. At this time, coolant exceeding the channel volume enters the temporary storage space formed by the sleeve 100. When the temperature drops, causing the coolant to contract, the elastic expansion member 300 releases the stored energy, pushing the piston 400 back to its original position, pumping the stored coolant back into the channel. The entire process automatically regulates the pressure through the displacement of the piston 400, preventing both excessive pressure that could damage the system and coolant leakage.

[0037] Compared to existing technologies, traditional pressure relief valves can only discharge coolant in one direction under overpressure. This solution, through the synergistic action of the elastic telescopic component 300 and the piston 400, achieves reversible storage and release of coolant. Furthermore, the mechanical adjustment mechanism is not limited by installation orientation, effectively solving the installation difficulties caused by changes in the tilting rotor's attitude, while eliminating the risk of irreversible coolant loss.

[0038] In one embodiment, the fluid pressure relief device further includes a limiting block (not shown), which is disposed at the assembly opening 120 and engages with the piston 400 to prevent the piston 400 from disengaging from the assembly opening 120, thereby preventing the compression chamber 110 from connecting to the cooling channel through the assembly opening 120.

[0039] The limiting block refers to a blocking structure fixed to the edge of the assembly opening 120. It can be made of metal or high-strength plastic material, such as an annular protrusion or a snap-fit ​​structure. Its function is to physically restrict the movement range of the piston 400, preventing the piston 400 from detaching from the opening under pressure.

[0040] The limiting fit refers to the contact constraint relationship between the piston 400 and the limiting block, which can be achieved by designing the end of the piston 400 as a stepped or grooved structure. When the piston 400 moves to its limit position, the limiting block contacts the step or groove, preventing the piston 400 from moving further.

[0041] Specifically, when the pressure inside the cooling channel increases, the coolant pushes the piston 400 into the compression chamber 110, compressing the elastic telescopic member 300; when the pressure decreases, the elastic telescopic member 300 pushes the piston 400 back to its original position. A limiting block is positioned at the extreme outward movement limit of the piston 400. When the piston 400 moves outward due to a sudden increase in pressure or vibration, the limiting block prevents it from completely disengaging from the assembly opening 120, thereby maintaining the sealing of the compression chamber 110.

[0042] Compared to existing technologies, traditional pressure relief devices lack a limiting structure. Under extreme pressure or vibration conditions, the piston 400 may detach from the opening of the sleeve 100, leading to coolant leakage and device failure. This solution effectively constrains the displacement range of the piston 400 through the cooperation of the limiting block and the piston 400, avoiding sealing failure caused by detachment.

[0043] Example 1

[0044] In this embodiment, as Figure 1 and Figure 2 As shown, the support plate 200 is sealed at one end of the sleeve 100 and fixedly assembled with the inner wall of the compression chamber 110. It should be noted that "the support plate 200 is sealed at one end of the sleeve 100" means that the support plate 200 is a sealing plate, completely sealing the end of the sleeve 100 and preventing it from communicating with the outside. The sealing arrangement refers to the use of a sealing ring or sealant between the support plate 200 and the inner wall of the sleeve 100 to achieve fluid isolation. Specifically, fluororubber seals can be used to prevent coolant leakage.

[0045] The assembly opening 120 is located at the end of the compression chamber 110 away from the support plate 200. At this time, there is one compression chamber 110, and there is only one assembly opening 120, one elastic telescopic member 300 and one piston 400 respectively.

[0046] Specifically, the support plate 200 is fixed to the end of the sleeve 100 to form a one-sided closed structure, so that the compression chamber 110 is connected to the cooling channel only through the assembly opening 120 located at the other end. When the coolant temperature rises, causing the pressure to increase, the coolant pushes the piston 400 towards the support plate 200 through the assembly opening 120, compressing the elastic expansion member 300 to store potential energy; when the coolant temperature drops and the pressure decreases, the elastic expansion member 300 releases potential energy, pushing the piston 400 to move in the opposite direction, pushing the stored coolant back into the cooling channel. This achieves dynamic compensation for changes in coolant volume, avoiding coolant loss caused by the one-way discharge of traditional pressure relief valves.

[0047] Furthermore, in one embodiment, as Figure 1 As shown, the compression chamber 110 is a sealed cavity that is not connected to the outside, and the compression chamber 110 is a vacuum chamber.

[0048] The sealed cavity refers to a closed space completely isolated from the external environment. This structure prevents coolant leakage and maintains pressure balance within the cooling channel. The vacuum chamber refers to a sealed space with internal gas pressure lower than atmospheric pressure, which can be achieved through a vacuuming process. This structure reduces the resistance of gas to the movement of piston 400.

[0049] Specifically, when the compression chamber 110 adopts a vacuum chamber structure, the movement of the piston 400 is only affected by the combined action of the elastic telescopic member 300 and the cooling hydraulic pressure, thus avoiding the resistance interference generated by gas compression.

[0050] In another embodiment, such as Figure 2 As shown, the compression chamber 110 is provided with a second vent pipe 130 that connects to the atmospheric environment. The second vent pipe 130 is located on the side wall of the sleeve 100. It should be noted that the second vent pipe 130 is located at the end of the compression chamber 110 near the support plate 200. This is to prevent the second vent pipe 130 from connecting to the cooling channel and causing coolant leakage during the movement of the piston 400.

[0051] The second vent pipe 130 refers to a channel structure that penetrates the side wall of the sleeve 100. It can be made by drilling or casting. This channel can balance the pressure difference between the compression chamber 110 and the external environment.

[0052] When the compression chamber 110 is equipped with a second vent pipe 130, the external atmosphere is connected to the inside of the compression chamber 110 through the second vent pipe 130, so that the air pressure inside and outside the compression chamber 110 is always kept in balance during the movement of the piston 400.

[0053] Example 2

[0054] In this embodiment, as Figures 3-6As shown, the support plate 200 is fixedly assembled to the middle of the sleeve 100 so that two compression cavities 110 are formed inside the sleeve 100, which are defined as the first cavity 111 and the second cavity 112 respectively. There are also two assembly openings 120, which are defined as the first opening 121 and the second opening 122 respectively. The first opening 121 is located at the end of the first cavity 111 away from the support plate 200, and the second opening 122 is located at the end of the second cavity 112 away from the support plate 200.

[0055] Similarly, there are two elastic telescopic components 300, which are defined as the first telescopic component 310 and the second telescopic component 320 respectively, and there are also two pistons 400, which are defined as the first piston body 410 and the second piston body 420 respectively.

[0056] The first plug 410 is movably disposed in the first cavity 111. One end of the first telescopic member 310 is connected to the support plate 200, and the other end is connected to the first plug 410. The sleeve 100 has a first opening 121 at one end for connecting to the cooling channel. The coolant in the cooling channel and the first telescopic member 310 can act on both ends of the first plug 410 respectively, so that the first plug 410 can move in the first cavity 111.

[0057] The second plug 420 is movably disposed in the second cavity 112. One end of the second telescopic member 320 is connected to the support plate 200, and the other end is connected to the second plug 420. The sleeve 100 has a second opening 122 at one end for connecting to the cooling channel. The coolant in the cooling channel and the second telescopic member 320 can act on both ends of the second plug 420 respectively, so that the second plug 420 can move within the second cavity 112.

[0058] It should be noted that the cooling channel connected to the first plug 410 and the cooling channel connected to the second plug 420 are the same cooling channel.

[0059] The support plate 200 is fixedly assembled in the middle of the sleeve 100, meaning that the plate structure is fixed to the area near the midpoint of the sleeve 100 axis by welding, bolting, or interference fit, and is used to divide the internal space of the sleeve 100 to form symmetrical or approximately symmetrical cavities. The first opening 121 and the second opening 122 are through holes respectively set at the ends of the two cavities (first cavity 111 and second cavity 112), which can be connected to the cooling channel pipeline through flanges or threaded interfaces.

[0060] Specifically, when the coolant expands due to heat, the pressure is transmitted to one end of the first plug 410 through the first opening 121, pushing the first plug 410 to compress the first telescopic member 310 and move towards the support plate 200, allowing the expanded coolant to temporarily enter the space vacated by the movement of the first plug 410. When the coolant temperature drops, the rebound force of the first telescopic member 310 drives the first plug 410 to move in the opposite direction, pushing the temporarily stored coolant back into the cooling channel. The second cavity 112 is connected to the cooling channel through the second opening 122. Under the action of the coolant pressure and the elastic force of the second telescopic member 320, the second plug 420 achieves volume compensation in the other direction using the same principle. For example, when the tilt rotor is in a horizontal attitude, the second cavity 112 can preferentially respond to changes in coolant volume; when in a vertical attitude, the first cavity 111 plays a major regulating role.

[0061] Compared with existing technologies, this solution, through a bidirectional symmetrical cavity design, can achieve bidirectional compensation for coolant volume changes under any spatial orientation. Furthermore, through the synergistic action of the elastic telescopic component 300 and the piston 400, this solution can complete coolant storage and return without relying on gravity.

[0062] Furthermore, in one embodiment, as Figure 3 As shown, the support plate 200 separates the first cavity 111 and the second cavity 112.

[0063] With this configuration, when the support plate 200 completely isolates the first cavity 111 and the second cavity 112, the two cavities form independent sealed spaces. At this time, the first telescopic member 310 and the second telescopic member 320 work independently in the first cavity 111 and the second cavity 112 respectively, and the first cavity 111 and the second cavity 112 do not interfere with each other when the coolant pressure changes.

[0064] In another embodiment, such as Figure 4 As shown, the support plate 200 is provided with a connecting hole 210, and the first cavity 111 is connected to the second cavity 112 through the connecting hole 210.

[0065] With this configuration, when the support plate 200 is provided with the connecting hole 210, the first cavity 111 and the second cavity 112 form a pressure balance channel through the hole. When the rotor attitude changes and causes uneven distribution of coolant, the connecting hole 210 can maintain system pressure balance between the first cavity 111 and the second cavity 112.

[0066] In one embodiment, such as Figure 5As shown, the elastic coefficient of the second telescopic member 320 is greater than that of the first telescopic member 310. When the first telescopic member 310 or the second telescopic member 320 is compressed to its limit, the rebound force of the first telescopic member 310 and the rebound force of the second telescopic member 320 are both less than or equal to the preset pressure relief pressure of the cooling channel. That is, the maximum compression pressure of the first telescopic member 310 is less than or equal to the preset pressure relief pressure of the cooling channel, and the maximum compression pressure of the second telescopic member 320 is less than or equal to the preset pressure relief pressure of the cooling channel. The change in the spatial volume of the compression chamber 110 is equal to the volume change value of the coolant due to thermal expansion and contraction.

[0067] The elastic coefficient refers to the magnitude of the reaction force generated by an elastic body under a unit deformation, which can be achieved through different materials or structural designs. For example, the second telescopic member 320 can be made of a high-stiffness spring or a composite elastic material, while the first telescopic member 310 can be made of a low-stiffness spring or a single metal material. The larger elastic coefficient of the second telescopic member 320 allows it to provide a stronger restoring force under the same compression stroke, while the smaller elastic coefficient of the first telescopic member 310 allows it to respond more sensitively to pressure changes under low-pressure environments.

[0068] Specifically, when the fluid pressure relief device is applied to a tilting rotor, the first chamber 111 and the second chamber 112 correspond to the pressure regulation requirements under different attitudes. In a vertical attitude, the cooling channel connected to the second chamber 112 may withstand higher pressures. At this time, the larger elastic coefficient of the second telescopic member 320 ensures that the second plug 420 maintains a stable seal under high pressure, preventing coolant leakage. In a horizontal attitude, under the lower pressure environment of the first chamber 111, the smaller elastic coefficient of the first telescopic member 310 allows it to adjust the displacement of the piston 400 in a timely manner according to pressure fluctuations, achieving dynamic pressure relief compensation. The differentiated matching of the first telescopic member 310 and the second telescopic member 320 ensures that the internal pressure of the cooling channel remains in a balanced state during attitude switching.

[0069] In one embodiment, such as Figures 3-5 As shown, both the first cavity 111 and the second cavity 112 are sealed cavities that are not connected to the outside, and both the first cavity 111 and the second cavity 112 are vacuum cavities.

[0070] Specifically, when the first chamber 111 and the second chamber 112 adopt a vacuum chamber structure, the movement of the piston 400 is only subject to the dual action of the elastic telescopic member 300 (the first telescopic member 310 and the second telescopic member 320) and the cooling hydraulic force, thus avoiding the resistance interference caused by gas compression.

[0071] In another embodiment, such as Figure 6As shown, one or both of the first cavity 111 and the second cavity 112 are provided with a first vent pipe 140 that communicates with the atmospheric environment. The first vent pipe 140 is disposed on the side wall of the sleeve 100.

[0072] With this configuration, when the cavity is equipped with the first vent pipe 140, external air enters the cavity (first cavity 111 or second cavity 112) through the side wall holes, avoiding pressure imbalance within the cavity due to temperature changes. For example, when the coolant expands due to heat, the piston 400 is pushed and compresses the elastic telescopic member 300. At this time, the first vent pipe 140 allows air to be discharged to relieve the pressure inside the cavity; when the coolant cools and contracts, the elastic telescopic member 300 pushes the piston 400 back to its original position, and the first vent pipe 140 draws in air to replenish the pressure, preventing negative pressure from hindering the movement of the piston 400.

[0073] Furthermore, when the first vent pipe 140 is connected to the first cavity 111, the first vent pipe 140 is located at the end of the first cavity 111 near the support plate 200. When the first vent pipe 140 is connected to the second cavity 112, the first vent pipe 140 is located at the end of the second cavity 112 near the support plate 200. In this way, it is prevented that the first vent pipe 140 connects to the cooling channel and causes coolant leakage during the movement of the first plug 410 or the second plug 420.

[0074] This application also provides a tilting rotor, which includes an assembly body and a fluid pressure relief device as described in any of the above embodiments. The assembly body is provided with a cooling channel, which is connected to one end of the sleeve 100 that is provided with an assembly opening 120. The coolant in the cooling channel and the elastic telescopic member 300 can act on both ends of the piston 400 respectively, so that the piston 400 can move in the compression chamber 110.

[0075] This application also provides an aircraft comprising the tilt rotor described in the above embodiments.

[0076] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0077] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

[0078] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0079] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0080] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0081] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0082] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0083] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

Claims

1. A fluid pressure relief device, characterized by, The utility model provides a compression chamber (110) is formed to sleeve (100), support plate (200) and elastic telescopic piece (300) and piston (400), sleeve (100) both ends are through arrangement, support plate (200) and sleeve (100) fixedly cooperate and form the compression chamber (110) with assembly opening (120), elastic telescopic piece (300) is arranged in the compression chamber (110), one end of elastic telescopic piece (300) is connected to support plate (200), the other end is connected to piston (400), piston (400) and the inner wall of compression chamber (110) are movably sealedly cooperated; One end of sleeve (100) is used for communicating cooling channel with assembly opening (120), and cooling liquid in cooling channel and elastic telescopic piece (300) can act on both ends of piston (400) respectively, so that piston (400) can move in compression chamber (110).

2. The fluid pressure relief device of claim 1, wherein Support plate (200) is fixedly assembled in the middle of sleeve (100), so that the inside of sleeve (100) forms two compression chambers (110), and is defined as first chamber (111) and second chamber (112) respectively, assembly opening (120) includes first opening (121) and second opening (122), first opening (121) is arranged at one end of first chamber (111) away from support plate (200), second opening (122) is arranged at one end of second chamber (112) away from support plate (200), elastic telescopic piece (300) includes first telescopic piece (310) and second telescopic piece (320), and piston (400) includes first plug body (410) and second plug body (420); First plug body (410) is movably arranged in first chamber (111), one end of first telescopic piece (310) is connected to support plate (200), the other end is connected to first plug body (410), one end of sleeve (100) is used for communicating cooling channel with first opening (121), and cooling liquid in cooling channel and first telescopic piece (310) can act on both ends of first plug body (410) respectively, so that first plug body (410) can move in first chamber (111); Second plug body (420) is movably arranged in second chamber (112), one end of second telescopic piece (320) is connected to support plate (200), the other end is connected to second plug body (420), one end of sleeve (100) is used for communicating cooling channel with second opening (122), and cooling liquid in cooling channel and second telescopic piece (320) can act on both ends of second plug body (420) respectively, so that second plug body (420) can move in second chamber (112).

3. The fluid pressure relief device of claim 2, wherein, Support plate (200) separates first chamber (111) and second chamber (112). Alternatively, the support plate (200) is provided with a communication hole (210), and the first cavity (111) communicates with the second cavity (112) through the communication hole (210).

4. The fluid pressure relief device of claim 2, wherein The second elastic member (320) has a greater elastic coefficient than the first elastic member (310).

5. The fluid pressure relief device of claim 2, wherein, The first cavity (111) and the second cavity (112) are both sealed cavities, and the first cavity (111) and the second cavity (112) are both vacuum cavities. Alternatively, one or both of the first cavity (111) and the second cavity (112) is provided with a first air pipe (140) that communicates with the atmosphere, and the first air pipe (140) is arranged on the side wall of the sleeve (100).

6. The fluid pressure relief device of claim 1, wherein The support plate (200) is sealingly arranged at one end of the sleeve (100) and fixedly assembled with the inner wall of the compression cavity (110), and the assembly opening (120) is located at the end of the compression cavity (110) away from the support plate (200).

7. The fluid pressure relief device of claim 1, wherein The compression cavity (110) is a sealed cavity, and the compression cavity (110) is a vacuum cavity. Alternatively, the compression cavity (110) is provided with a second air pipe (130) that communicates with the atmosphere, and the second air pipe (130) is arranged on the side wall of the sleeve (100).

8. The fluid pressure relief device of claim 1, wherein Further comprising a limiting block arranged at the assembly opening (120) and limitingly matched with the piston (400) to prevent the piston (400) from being separated from the assembly opening (120).

9. A tiltrotor characterized by, The fluid pressure relief device comprises an assembly body provided with a cooling channel, and the cooling channel is communicated with one end of the sleeve (100) provided with the assembly opening (120), and the cooling liquid in the cooling channel and the elastic expansion member (300) can respectively act on both ends of the piston (400) to enable the piston (400) to move in the compression cavity (110).

10. An aircraft, characterized in that The tilting rotor comprises the tilting rotor as claimed in claim 9.

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