Compressor tip clearance control device based on phase change material actuator and compressor

Abstract

The present invention discloses a compressor tip clearance control device and a compressor based on a phase change material actuator, comprising: a compressor casing, a metal elastic ring, a phase change material actuator, a first support rod and a second support rod. Among them, the metal elastic ring is circumferentially arranged inside the compressor casing and is coaxially arranged with the compressor casing; an elastic component is arranged between the metal elastic ring and the compressor casing; the phase change material actuator is arranged outside the compressor casing, and one end of the phase change material actuator is fixedly connected to the metal elastic ring through the first support rod penetrating the compressor casing; the other end of the phase change material actuator is fixedly connected to the compressor casing through the second support rod; the phase change material actuator drives the metal elastic ring to squeeze or relax the elastic component through the first support rod with the deformation of its own phase change material, thereby controlling the increase or recovery of the compressor tip clearance. The present invention can maintain the optimal clearance for the operation of the compressor, reduce fuel consumption, and avoid internal flow instability.

Description

Technical Field

[0001] The present invention belongs to the technical field of aeroengine control, and particularly relates to a compressor tip clearance control device and a compressor based on a phase change material driver. Background Art

[0002] The tip clearance has a very important impact on the efficiency, safety, reliability and life of an aeroengine. In the actual design of an aeroengine, in order to prevent the blades from rubbing against the casing, a relatively large clearance is usually reserved between the blades and the casing.

[0003] However, a relatively large clearance will bring two problems: one is that it reduces the flow rate through the blade passage, causing flow loss, reducing work done, lowering the work efficiency of the compressor, increasing the fuel consumption rate, increasing harmful gas emissions, and increasing the exhaust gas temperature of the engine, thereby reducing the engine life; the other is that the air flow leaking through this clearance will generate vortices at the outlet, triggering unstable internal flow of the compressor. Summary of the Invention

[0004] In order to solve the above problems existing in the prior art, the present invention provides a compressor tip clearance control device and a compressor based on a phase change material driver. The technical problems to be solved by the present invention are realized through the following technical solutions:

[0005] The first aspect of the present invention provides a compressor tip clearance control device based on a phase change material driver, including: a compressor casing, a metal elastic ring, a phase change material driver, a first support rod and a second support rod, wherein,

[0006] The compressor casing is a hollow cylindrical structure; the metal elastic ring is circumferentially arranged inside the compressor casing and is coaxially arranged with the compressor casing; an elastic component is arranged between the metal elastic ring and the compressor casing;

[0007] The phase change material driver is arranged outside the compressor casing, and one end of the phase change material driver is fixedly connected to the metal elastic ring through a first support rod penetrating the compressor casing; the other end of the phase change material driver is fixedly connected to the compressor casing through the second support rod;

[0008] The phase change material driver drives the metal elastic ring to squeeze or relax the elastic component through the first support rod with the deformation of its own phase change material, thereby controlling the compressor tip clearance to become larger or recover.

[0009] In an embodiment of the present invention, the phase change material driver includes: a cylinder block, a driving rod, a return spring, a piston, and a phase change material, wherein,

[0010] One end of the cylinder block is provided with the phase change material, and the other end is provided with the piston adjacent to the phase change material;

[0011] The piston contacts the inner wall of the cylinder block and is fixedly connected to one end of the driving rod. The other end of the driving rod extends out of the cylinder block and is fixedly connected to the first support rod;

[0012] The return spring is sleeved on the driving rod inside the cylinder block;

[0013] Under the action of the phase change material temperature control device, the phase change occurs, causing a volume change to drive the driving rod to move in the horizontal direction.

[0014] In an embodiment of the present invention, the temperature control device includes: a heating belt, a temperature sensor and a temperature controller, wherein,

[0015] The heating belt is arranged on the outer periphery of the cylinder block at one end of the phase change material;

[0016] The temperature sensor is arranged between the heating belt and the cylinder block and is connected to the temperature controller;

[0017] The temperature controller controls the heating of the phase change material by the heating belt through the detection of the temperature of the phase change material by the temperature sensor to achieve the required displacement.

[0018] In an embodiment of the present invention, the phase change material driver further includes a cover for sealing the phase change material in the cylinder block, and the cover is detachably connected to the tail end of the cylinder block.

[0019] In an embodiment of the present invention, the metal elastic ring is provided with an opening, and one side of the opening is fixedly connected to the first support rod, and the other side is fixedly connected to the compressor casing.

[0020] In an embodiment of the present invention, the elastic member is an elastic sealing strip, and the elastic sealing strip is sleeved on the outer periphery of the metal elastic ring and is in close contact with the inner wall of the compressor casing.

[0021] In an embodiment of the present invention, a sealing ring is arranged on the circumference of the piston, and the sealing ring is in close contact with the inner wall of the cylinder block.

[0022] In an embodiment of the present invention, the heating belt is externally connected to a power supply, and the heating belt is heated by the power supply to increase the temperature of the phase change material to cause a phase change.

[0023] In an embodiment of the present invention, the phase change material is a solid-liquid phase change material, including paraffin phase change material, Cu-paraffin composite material, and AlN-paraffin composite material.

[0024] In the second aspect of the present invention, a compressor is provided, which includes a blade disk, moving blades arranged on the blade disk, and a compressor tip clearance control device based on a phase change material driver as described in any one of the previous items, which is sleeved outside the moving blades and has a gap with the moving blades.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] The solution of the present invention controls the volume change of the phase change material in the phase change material driver, causing the driving rod of the phase change material driver to displace, and then acting on the metal elastic ring through the first support rod to squeeze or relax the elastic component, thereby controlling the increase or recovery of the compressor tip clearance and realizing the control of the tip clearance; the solution of the present invention enables the aeroengine to continuously maintain the optimal clearance during operation, which can reduce the fuel consumption of the compressor, reduce the emission of harmful gases, and extend the life of the engine; at the same time, it can also avoid the problem that the eddy current generated by the leaked air flow at the outlet due to too large a clearance will cause unstable internal flow of the compressor. Description of the Drawings

[0027] Figure 1 is a schematic structural diagram of a compressor tip clearance control device based on a phase change material driver provided by the present invention;

[0028] Figure 2 is Figure 1 a sectional view taken along the A-A direction of the schematic structural diagram;

[0029] Figure 3 is a schematic structural diagram of a phase change material driver provided by an embodiment of the present invention;

[0030] Figure 4 is a schematic structural diagram of a compressor provided by an embodiment of the present invention.

[0031] Reference Signs:

[0032] 1 - Compressor casing; 2 - Metal elastic ring; 3 - Phase change material driver; 4 - First support rod; 5 - Second support rod; 6 - Elastic sealing strip; 7 - Fixed screw; 8 - Sliding hole; 9 - Cylinder block; 10 - Driving rod; 11 - Return spring; 12 - Piston; 13 - Phase change material; 14 - Heating tape; 15 - Temperature sensor; 16 - Temperature controller; 17 - Sealing ring; 18 - Cover body; 19 - Sealing screw; 20 - Compressor tip clearance control device; 21 - Moving blade; 22 - Blade disk. Detailed Embodiments

[0033] The following further describes the present invention in detail with reference to specific embodiments, but the implementation manners of the present invention are not limited thereto.

[0034] To solve the problems of high power consumption, reduced lifespan of the compressor, and unstable internal flow of the compressor caused by an excessively large tip clearance of the existing compressor, an embodiment of the present invention provides a compressor tip clearance control device and a tablet press based on a phase change material actuator.

[0035] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of a compressor tip clearance control device based on a phase change material actuator 3 provided by the present invention; Figure 1 The shown compressor tip clearance control device based on a phase change material actuator 3 includes: a compressor casing 1, a metal elastic ring 2, a phase change material actuator 3, a first support rod 4, and a second support rod 5. The structure and function of each part will be specifically described below.

[0036] The compressor casing 1 of the embodiment of the present invention is a hollow cylindrical structure, which is the same as the existing compressor casing 1, is arranged outside the compressor blades, and has a certain gap with the compressor blades, and this gap is the tip clearance that needs to be controlled in the present invention.

[0037] The metal elastic ring 2 of the embodiment of the present invention is circumferentially arranged inside the compressor casing 1 and is coaxially arranged with the compressor casing 1. Specifically, a groove is provided on the inner wall of the compressor casing 1, and the metal elastic ring 2 is fixed in this groove. It can be understood that the metal elastic ring 2 is a cylindrical metal sheet, which can expand and deform outward under force and recover inward when not under force.

[0038] As an implementation manner, the metal elastic ring 2 may be provided with an opening, and one side of the opening is fixedly connected to the first support rod 4, and the other side is fixedly connected to the compressor casing 1. When the phase change material actuator 3 works, it will drive the opening gap of the metal elastic ring 2 to increase or decrease, thereby causing the diameter of the metal elastic ring 2 to increase or decrease.

[0039] Please refer to Figure 2 , Figure 2 which is Figure 1 a sectional view taken along the A-A direction of the structural schematic diagram; an elastic component is provided between the metal elastic ring 2 and the compressor casing 1 in the embodiment of the present invention. On the one hand, this elastic component is used to ensure the coaxiality and sealing between the metal elastic ring 2 and the compressor casing 1, and on the other hand, it will deform when subjected to the force of the metal elastic ring 2, and the purpose is to make the compressor tip clearance larger or recover.

[0040] Exemplarily, the elastic member can be an elastic sealing strip 6, which is sleeved on the outer periphery of the metal elastic ring 2 and is in close contact with the inner wall of the compressor casing 1. Specifically, the elastic sealing strip 6 can be two circular-section sealing rings 17, which are respectively arranged on the outer periphery of the metal elastic ring 2 on both sides of the fixing position of the first support rod 4 and the metal elastic ring 2.

[0041] In the embodiment of the present invention, the phase change material driver 3 is arranged outside the compressor casing 1, and one end of the phase change material driver 3 is fixedly connected to the metal elastic ring 2 through the first support rod 4 penetrating through the compressor casing 1; the other end of the phase change material driver 3 is fixedly connected to the compressor casing 1 through the second support rod 5; the phase change material driver 3 drives the metal elastic ring 2 to squeeze or relax the elastic member through the first support rod 4 with the deformation of its own phase change material 13, thereby controlling the increase or recovery of the compressor tip clearance.

[0042] It can be understood that the first support rod 4 and the second support rod 5 are parallel to each other and are arranged in a direction perpendicular to the axial direction of the compressor casing 1. The top end of the first support rod 4 is fixedly connected to the movable end of the phase change material driver, and specifically can be fixedly connected through a pipe clamp; the first support rod 4 passes through the compressor casing 1, and the bottom end can be fixedly connected to the metal elastic ring 2 through a fixing screw 7; the specific way for the first support rod 4 to pass through the compressor casing 1 can be to provide a sliding hole 8 in the compressor casing 1, and the first support rod 4 can move horizontally in the sliding hole 8. The top end of the second support rod 5 is fixedly connected to the fixed end of the phase change material driver, and specifically can be fixedly connected through a pipe clamp; the bottom end of the second support rod 5 can be directly fixed on the outer casing of the compressor casing 1.

[0043] Please refer to Figure 3 , Figure 3 which is a schematic structural diagram of a phase change material driver 3 provided by an embodiment of the present invention; specifically, the phase change material driver 3 in the embodiment of the present invention can include: a cylinder body 9, a driving rod 10, a return spring 11, a piston 12, and a phase change material 13, wherein,

[0044] One end of the cylinder body 9 is provided with a phase change material 13, and the other end is provided with a piston 12 adjacent to the phase change material 13; the piston 12 is in contact with the inner wall of the cylinder body 9 and is fixedly connected to one end of the driving rod 10. The other end of the driving rod 10 extends out of the cylinder body 9 and is fixedly connected to the first support rod 4; the return spring 11 is sleeved on the driving rod 10 inside the cylinder body 9; the phase change material 13 changes in volume under the action of a temperature control device, so as to drive the driving rod 10 to move in the horizontal direction.

[0045] The phase change material 13 in the embodiment of the present invention is preferably a solid-liquid phase change material 13, including paraffin phase change material 13, Cu-paraffin composite material, and AlN-paraffin composite material. The phase change material 13 adopted in the present invention has low cost, high volume expansion rate, and large phase change force, and is superior to shape memory alloy in terms of response time and power.

[0046] It should be noted that the phase change material 13 is usually in a solid state. In order to facilitate adding it into the cylinder body 9 of the phase change material driver 3, the phase change material 13 can be first heated to a liquid state in a constant temperature oven, and then the bubbles in the liquid phase change material 13 are pumped out in a vacuum environment (because bubbles will be generated after the phase change material 13 is heated, and the bubbles will reduce the volume expansion rate of the phase change material 13, thereby affecting the driving performance of the phase change material 13), and then the liquid phase change material 13 is injected into the cylinder body 9. At normal temperature, the phase change material 13 in the cylinder body 9 will turn back into a solid state. Therefore, in the present invention, by heating the solid phase change material 13, the phase change material 13 continuously changes from a solid state to a liquid state, and the volume continuously expands, thereby driving the piston 12 to drive the driving rod 10 to perform a linear outward movement; when the temperature decreases or the heating stops, the phase change material 13 continuously changes from a liquid phase to a solid phase, and the volume continuously shrinks. At this time, under the action of the return spring 11, the piston 12 drives the driving rod 10 to perform a linear inward movement.

[0047] The temperature control device in the embodiment of the present invention includes: a heating belt 14, a temperature sensor 15, and a temperature controller 16. Among them, the heating belt 14 is arranged on the outer periphery of the cylinder body 9 at one end of the phase change material 13; the temperature sensor 15 is arranged between the heating belt 14 and the cylinder body 9 and is connected to the temperature controller 16; the temperature controller 16 controls the heating of the phase change material 13 by the heating belt 14 through the detection of the temperature of the phase change material 13 by the temperature sensor 15 to achieve the required displacement.

[0048] Specifically, the heating belt 14 can be locally arranged on the outer periphery of the cylinder body 9 at one end of the phase change material 13, or can be arranged to cover the whole circumference; the heating belt 14 is externally connected to a power supply, and the heating belt 14 is heated by the power supply to increase the temperature of the phase change material 13 to cause a phase change. A sealing ring 17 is arranged on the circumference of the piston 12, and the sealing ring 17 is in close contact with the inner wall of the cylinder body 9 to achieve the sealing effect between the piston 12 and the cylinder body 9.

[0049] In addition, the phase change material driver 3 can also include a cover body 18 for sealing the phase change material 13 in the cylinder body 9, and the cover body 18 is detachably connected to the tail end of the cylinder body 9. That is, the tail end of the cylinder body 9 is open, which is convenient for pouring the liquid phase change material 13; the connection method between the cover body 18 and the tail end of the cylinder body 9 can be a threaded connection. Further, the cover body 18 and the tail end of the cylinder body 9 are reinforced by a sealing screw 19.

[0050] The temperature control device according to the embodiment of the present invention will, according to the temperature range preset in the temperature controller 16 and in combination with the temperature of the phase change material 13 detected in real time by the temperature sensor 15, control the heating belt 14 to heat the phase change material 13 to the preset temperature range, thereby promoting the volume change of the phase change material 13 during the temperature change process.

[0051] As a preferred embodiment of the present invention, precise control of the temperature of the phase change material driver 3 can achieve precise control of the displacement of the drive rod 10 of the phase change material driver 3, and further achieve precise control of the tip clearance. The specific method is as follows:

[0052] Establish a mathematical model between the displacement of the drive rod 10 and the temperature of the phase change material 13:

[0053]

[0054] Wherein, is the isobaric volume expansion coefficient, is the isothermal volume compression coefficient, p, V, and T are respectively the real-time pressure, volume, and temperature of the phase change material 13 with a fixed mass under the phase change temperature range; T0 is the initial temperature of the phase change material 13, V0 is the initial volume of the phase change material 13, d is the inner diameter of the cylinder block 9, f is the load force generated by the external load member on the driver, k is the elastic coefficient of the return spring 11, and x is the target displacement.

[0055] According to this mathematical model, precise adjustment of the displacement of the drive rod 10 can be achieved by controlling the temperature of the phase change material 13.

[0056] Since the displacement of the drive rod 10 will drive the metal elastic ring 2 to squeeze or relax the elastic component, thereby controlling the increase or recovery of the compressor tip clearance, the model of the corresponding relationship between the displacement of the drive rod 10 and the tip clearance can be further established through experiments to achieve the corresponding adjustment of the required temperature rise range according to the required tip clearance.

[0057] The working principle of the compressor tip clearance control device based on the phase change material driver 3 according to the embodiment of the present invention is: based on the expansion and contraction properties of the phase change material 13 during phase change, the tip clearance control device with the phase change material driver 3 is arranged on the moving blade 21 of the compressor, thereby controlling the change of the tip clearance.

[0058] Specifically, a target temperature to be achieved is preset in the temperature controller 16. The temperature controller 16 controls the heating belt 14 to heat the phase change material 13. The temperature sensor 15 detects the temperature of the phase change material 13 in real time, and when the target temperature is reached, the temperature controller 16 controls to stop heating the heating belt 14. During the process of the temperature of the phase change material 13 continuously rising, since the phase change material 13 is a phase change material such as paraffin phase change material 13, Cu-paraffin composite material, AlN-paraffin composite material, etc., which is not a single volume change phase change material 13, its volume will continuously expand during the heating process until the target volume at the target temperature. The continuously expanding volume of the phase change material 13 will push the piston 12 to drive the drive rod 10 to perform an outward linear motion, and then act on the metal elastic ring 2 through the first support rod 4 to squeeze the elastic component, so as to control the increase of the compressor tip clearance.

[0059] Based on the same principle, when the heating is stopped, the temperature of the phase change material 13 will gradually decrease, and the volume of the phase change material 13 will continuously shrink. At this time, under the action of the return spring 11, the piston 12 drives the drive rod 10 to perform an inward linear motion, and then pulls the metal elastic ring 2 back to its original position through the first support rod 4, so that the compressor tip clearance returns to the initial size.

[0060] Of course, the specific control of the tip clearance to be achieved can also be realized by setting the target temperature to be raised through the mathematical model provided by the preferred embodiment of the present invention above.

[0061] The compressor tip clearance control device based on the phase change material driver 3 provided by the embodiment of the present invention controls the volume change of the phase change material 13 in the phase change material driver 3, so that the drive rod 10 of the phase change material driver 3 undergoes a displacement change, and then acts on the metal elastic ring 2 through the first support rod 4 to squeeze or relax the elastic component, thereby controlling the increase or recovery of the compressor tip clearance, and realizing the control of the tip clearance. The solution of the present invention enables the aeroengine to continuously maintain the optimal clearance for the operation of the compressor during the working process, which can reduce the fuel consumption of the compressor, reduce the emission of harmful gases, and extend the life of the engine. At the same time, it can also avoid the problem that the eddy current generated by the leaked air flow at the outlet will cause unstable internal flow of the compressor due to too large a clearance.

[0062] Please refer to Figure 4 , Figure 4 which is a schematic structural diagram of a compressor provided by the embodiment of the present invention; The embodiment of the present invention also provides a compressor, including a blade wheel disc 22, moving blade vanes 21 arranged on the blade wheel disc 22, and a compressor tip clearance control device 20 sleeved outside the moving blade vanes 21 and having a clearance with the moving blade vanes 21. The compressor tip clearance control device 20 can be the compressor tip clearance control device based on the phase change material driver 3 in any of the above embodiments.

[0063] The compressor according to the embodiment of the present invention adopts a compressor tip clearance control device based on a phase change material driver. Its specific structure and functions have been introduced in detail above, and will not be elaborated here.

[0064] For the compressor according to the embodiment of the present invention, under normal conditions, the tip clearance is smaller than that of the existing compressor, but this clearance will not cause the blade to rub against the casing; generally, when the compressor starts up or shuts down, heating is carried out to enlarge the tip clearance; when the compressor is working normally, the heating is stopped and the tip clearance is restored. Since the area where the leakage vortex passes through is a high-loss area, as the tip clearance increases, the leakage vortex deflects circumferentially and occupies a larger area, increasing the losses in the moving blade tip and its downstream area, resulting in a decrease in the compressor efficiency and an increase in the fuel consumption rate of the compressor. Therefore, the solution of the present invention controls the volume change of the phase change material in the phase change material driver, causing the driving rod of the phase change material driver to displace, and then acting on the metal elastic ring through the first support rod to squeeze or relax the elastic component, thereby controlling the tip clearance of the compressor to become larger or restored, achieving the control of the tip clearance; the solution of the present invention enables the aero-engine to continuously maintain the optimal clearance during operation, which can reduce the fuel consumption of the compressor, reduce the emission of harmful gases, and extend the life of the engine; at the same time, it can also avoid the problem that the leaked air flow will generate vortices at the outlet due to too large a clearance, causing unstable internal flow of the compressor.

[0065] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0066] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0067] In the present invention, unless otherwise clearly specified or limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] In the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0069] In the description of this specification, the descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0070] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention pertains, without departing from the concept of the present invention, several simple deductions or substitutions can still be made, and all should be regarded as belonging to the protection scope of the present invention.

Claims

1. A compressor tip clearance control device based on a phase change material actuator, characterized in that Comprising: A compressor casing, a metal elastic ring, a phase change material driver, a first support rod, and a second support rod, wherein, The compressor casing is a hollow cylindrical structure; the metal elastic ring is circumferentially arranged inside the compressor casing and is coaxially arranged with the compressor casing; an elastic member is arranged between the metal elastic ring and the compressor casing; The phase change material driver is arranged outside the compressor casing, and one end of the phase change material driver is fixedly connected to the metal elastic ring through the first support rod penetrating the compressor casing; the other end of the phase change material driver is fixedly connected to the compressor casing through the second support rod; The phase change material driver drives the metal elastic ring to squeeze or relax the elastic member through the first support rod with the deformation of its own phase change material, thereby controlling the increase or recovery of the compressor tip clearance.

2. The compressor tip clearance control device based on the phase change material driver according to claim 1, characterized in that The phase change material driver includes: a cylinder body, a drive rod, a return spring, a piston, and a phase change material, wherein, One end of the cylinder body is provided with the phase change material, and the other end is provided with the piston adjacent to the phase change material; The piston is in contact with the inner wall of the cylinder body and is fixedly connected to one end of the drive rod, and the other end of the drive rod extends out of the cylinder body and is fixedly connected to the first support rod; The return spring is sleeved on the drive rod inside the cylinder body; The phase change material undergoes a phase change under the action of the temperature control device, causing a volume change to drive the drive rod to move in the horizontal direction.

3. The compressor tip clearance control device based on the phase change material actuator according to claim 2, characterized in that, The temperature control device includes: a heating tape, a temperature sensor, and a temperature controller, wherein, The heating tape is arranged on the outer periphery of the cylinder body at one end of the phase change material; The temperature sensor is arranged between the heating tape and the cylinder body and is connected to the temperature controller; The temperature controller controls the heating of the phase change material by the heating tape through the detection of the temperature of the phase change material by the temperature sensor to achieve the required displacement.

4. The compressor tip clearance control device based on the phase change material actuator according to claim 2, characterized in that, The phase change material driver further includes a cover body for sealing the phase change material in the cylinder body, and the cover body is detachably connected to the tail end of the cylinder body.

5. The compressor tip clearance control device based on the phase change material driver according to claim 1, wherein The metal elastic ring is provided with an opening, and one side of the opening is fixedly connected to the first support rod, and the other side is fixedly connected to the compressor casing.

6. The compressor tip clearance control device based on the phase change material actuator according to claim 1, wherein The elastic member is an elastic sealing strip, and the elastic sealing strip is sleeved on the outer periphery of the metal elastic ring and is in close contact with the inner wall of the compressor casing.

7. The compressor tip clearance control device based on the phase change material driver according to claim 2, characterized in that A sealing ring is arranged on the circumference of the piston, and the sealing ring is in close contact with the inner wall of the cylinder body.

8. The compressor tip clearance control device based on the phase change material driver according to claim 3, characterized in that, The heating tape is externally connected to a power source, and the power source heats the heating tape to increase the temperature of the phase change material and cause a phase change.

9. The compressor tip clearance control device based on the phase change material actuator according to claim 1, wherein The phase change material is a solid-liquid phase change material, including paraffin phase change material, Cu-paraffin composite material, and AlN-paraffin composite material.

10. A compressor, characterized in that, Comprising a blade wheel disc, moving blade vanes arranged on the blade wheel disc, and a compressor tip clearance control device based on a phase change material driver as described in any one of claims 1 to 9, which is sleeved outside the moving blade vanes and has a gap with the moving blade vanes.

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