A shutter magazine and an engine

Abstract

The present disclosure relates to the field of aerospace technology, and particularly relates to a shutter case and an engine to solve the problem that the conventional case processing cannot meet the requirements of multiple working conditions simultaneously in the prior art. The shutter case comprises a case main body, a transmission component, a driving mechanism and a case inner wall assembly. The case main body has a first end face and a second end face. A first limiting groove for placing the transmission component is arranged on the outer side wall of the case main body close to the first end face. The transmission component is located in the first limiting groove. The driving mechanism is arranged on the outer side wall of the case main body and is used for driving the transmission component to rotate. The case inner wall assembly is located in the interior of the case main body and is used for forming the inner diameter of the case inner wall. One end of the case inner wall assembly is rotationally connected with the transmission component, and the other end of the case inner wall assembly is rotationally connected with the second end face. The shutter case and the engine provided by the present disclosure are used for adjusting the stability of the engine.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of aerospace technology, and in particular, to a shutter casing and an engine. BACKGROUND

[0002] Casing treatment is a passive control technology for expanding the stable operating range of a compressor and improving the performance of the compressor by static design, including schemes such as opening holes, opening slots, or constructing a porous inner wall, which generally changes the flow field inside the casing based on fixed geometric mechanisms to improve the stability of the compressor.

[0003] At present, traditional casing treatment can generally improve the stability of the compressor, but since the traditional casing treatment is generally based on static design and lacks dynamic adjustment capability, the effect of expanding the stability is limited by the fixed geometric structure, which also limits the application effect of the traditional casing treatment under complex flight conditions and operating conditions.

[0004] Therefore, how to solve the problem that the traditional casing treatment in the prior art cannot simultaneously meet the requirements of multiple operating conditions is one of the important problems to be solved in the field. SUMMARY

[0005] Therefore, the embodiments of the present disclosure provide a shutter casing and an engine to solve the problem that the traditional casing treatment in the prior art cannot simultaneously meet the requirements of multiple operating conditions.

[0006] According to one aspect of the present disclosure, a shutter casing is provided, which includes a casing body, a transmission component, a driving mechanism, and a casing inner wall assembly. The casing body has a first end face and a second end face. A first limiting groove for placing the transmission component is formed on the outer side wall of the casing body close to the first end face, and the transmission component is located in the first limiting groove. The driving mechanism is arranged on the outer side wall of the casing body, and is used to drive the transmission component to rotate. The casing inner wall assembly is located in the interior of the casing body, and is used to form the inner diameter of the casing inner wall. One end of the casing inner wall assembly is rotationally connected with the transmission component, and the other end of the casing inner wall assembly is rotationally connected with the second end face. The transmission component is used to drive the casing inner wall assembly to rotate, and the casing inner wall assembly is used to change the inner diameter of the casing inner wall and the perforation rate of the casing inner wall.

[0007] In addition, according to the shutter casing of one aspect of the present disclosure, the casing inner wall assembly includes a plurality of wall plate units. The leading end part of each wall plate unit is gap-connected with the trailing end part of each wall plate unit, or the leading end part of each wall plate unit overlaps with the trailing end part of each wall plate unit.

[0008] According to one aspect of the present disclosure, the shutter magazine comprises: a first support rod, a second support rod and a wall plate, the wall plate is provided with a second limiting groove and a first through hole, the first support rod is arranged in the second limiting groove, and the second support rod is arranged in the first through hole.

[0009] According to one aspect of the present disclosure, the geometric length of the first support rod and the second support rod extending out of the wall plate near the first end face is L1, and the geometric length of the first support rod and the second support rod extending out of the wall plate near the second end face is L2, L1 < L2.

[0010] According to one aspect of the present disclosure, the wall plate is further provided with a plurality of second through holes arranged in a matrix.

[0011] According to one aspect of the present disclosure, the transmission component is provided with a plurality of first arc-shaped through holes, and each first arc-shaped through hole is uniformly distributed along the circumferential direction of the transmission component.

[0012] According to one aspect of the present disclosure, the second end face of the magazine body is provided with a plurality of second arc-shaped through holes, and each second arc-shaped through hole is uniformly distributed along the circumferential direction of the magazine body.

[0013] According to one aspect of the present disclosure, the first arc-shaped through hole and the second arc-shaped through hole overlap in the axial projection position.

[0014] According to one aspect of the present disclosure, the geometric center of the driving mechanism and the geometric center of the transmission component are located on the same axis.

[0015] According to another aspect of the present disclosure, an engine is provided, comprising the above shutter magazine.

[0016] The at least one technical scheme adopted by the embodiment of the present disclosure can achieve the following beneficial effects: in the shutter case, the case main body has a first end face and a second end face, a first limiting groove for placing a transmission component is formed on the outer side wall of the case main body close to the first end face, and the transmission component is located in the first limiting groove. The driving mechanism is arranged on the outer side wall of the case main body, and is used to drive the transmission component to rotate. The case inner wall assembly is located in the interior of the case main body, and is used to form the inner diameter of the case inner wall. One end of the case inner wall assembly is rotationally connected with the transmission component, and the other end of the case inner wall assembly is rotationally connected with the second end face. Based on this, the rotation of the transmission component is used to drive the rotation of the case inner wall assembly, and the rotation of the case inner wall assembly is used to change the inner diameter of the case inner wall and the perforation rate of the case inner wall. By actively changing the inner diameter of the case inner wall, the best blade tip clearance can be adjusted under different working conditions. On this basis, reducing the inner diameter of the case inner wall under appropriate conditions can reduce the blade tip clearance. Reducing the blade tip clearance can effectively reduce the decline of the compressor stability margin and reduce the influence of the blade tip leakage flow on the compressor loss, thereby reducing the specific fuel consumption. At the same time, reducing the inner diameter of the case inner wall increases the perforation coverage rate of the case inner wall, so that the perforation rate of the case inner wall remains unchanged or decreases, which is beneficial to keeping the expansion stability margin of the compressor stable, effectively reducing the risk of compressor stall or surge, and ensuring the safety of the engine. According to the active change of the inner diameter of the case inner wall and the perforation rate of the case inner wall under different working conditions, the safety of the engine can be ensured, thereby effectively solving the problem that the traditional case processing in the prior art cannot meet the requirements of multiple working conditions at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0018] Figure 1 Fig. 1 is a general assembly structure schematic diagram of a shutter case according to an embodiment of the present disclosure;

[0019] Figure 2 Fig. 2 is a general assembly structure sectional view schematic diagram of a shutter case according to an embodiment of the present disclosure;

[0020] Figure 3 Fig. 3 is a structure schematic diagram of a wall plate unit according to an embodiment of the present disclosure;

[0021] Figure 4 Fig. 4 is a structure schematic diagram of a transmission component according to an embodiment of the present disclosure;

[0022] Figure 5is a structural schematic view further illustrating the structure of the case body according to an embodiment of the present disclosure.

[0023] Reference signs:

[0024] 1 - case body, 11 - first end face, 12 - second end face, 121 - second arc-shaped through hole, 13 - first limiting groove, 2 - transmission component, 21 - first arc-shaped through hole, 3 - case inner wall assembly, 31 - wall plate unit, 311 - first support rod, 312 - second support rod, 313 - wall plate, 314 - first through hole, 315 - second limiting groove, 316 - second through hole, 4 - driving mechanism. DETAILED DESCRIPTION

[0025] Embodiments of the present disclosure will be described in more detail with reference to the drawings. While certain embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be embodied in various forms and should not be interpreted as being limited to the embodiments set forth herein; rather, these embodiments are provided so as to more completely and thoroughly understand the present disclosure. It is understood that the drawings and embodiments of the present disclosure are for exemplary purposes only and are not intended to limit the scope of protection of the present disclosure.

[0026] It should be understood that each of the steps recited in the method embodiments of the present disclosure can be executed in different orders and / or in parallel. In addition, the method embodiments can include additional steps and / or omit the execution of the steps shown. The scope of the present disclosure is not limited in this respect.

[0027] The term “comprising” and variations thereof as used herein are open-ended, that is, “including but not limited to”. The term “based on” is “based, at least in part, on”. The term “one embodiment” means “at least one embodiment”; the term “another embodiment” means “at least one additional embodiment”; the term “some embodiments” means “at least some embodiments”. Related definitions are given throughout the description. It is noted that the concepts of “first”, “second”, etc. mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not intended to limit the order or interdependence of the functions performed by these devices, modules or units.

[0028] It is noted that the modification of “one”, “multiple” mentioned in the present disclosure is illustrative rather than limiting, and those skilled in the art should understand that, unless otherwise explicitly indicated in the context, it should be understood as “one or more”.

[0029] The names of the messages or information exchanged between the plurality of devices in the embodiments of the present disclosure are only for illustrative purposes, and are not intended to limit the scope of the messages or information.

[0030] Casing treatment is a passive control technology to expand the stable operating range and improve the performance of a compressor by static design, including schemes such as opening holes, slots or constructing porous inner walls, which generally change the flow field inside the casing based on fixed geometric mechanisms to improve the stability of the compressor.

[0031] At present, the traditional casing treatment can generally improve the stability of the compressor well, but since the traditional casing treatment is generally based on static design and lacks dynamic adjustment capability, the stability expansion effect is limited by the fixed geometric structure, which also limits the application effect of the traditional casing treatment under complex flight conditions and operating conditions.

[0032] In view of the above problems, the exemplary embodiments of the present disclosure provide a shutter casing and an engine to solve the problem that the traditional casing treatment in the prior art cannot meet the requirements of multiple working conditions at the same time.

[0033] A shutter casing and an engine according to the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0034] Figure 1 Fig. 1 shows a general assembly structure schematic diagram of a shutter casing according to the embodiments of the present disclosure, Figure 2 Fig. 2 shows a general assembly structure cross-sectional schematic diagram of a shutter casing according to the embodiments of the present disclosure, such as Figure 1 - Figure 2As shown, the shutter case includes: a case body 1, a transmission component 2, a driving mechanism 4 and a case inner wall assembly 3, the case body 1 has a first end face 11 and a second end face 12, the outer side wall of the case body 1 close to the first end face 11 is provided with a first limiting groove 13 for placing the transmission component 2, and the transmission component 2 is located in the first limiting groove 13. It can be understood that the transmission component 2 can be a gear or the like transmission component 2, and here the gear is taken as an example. The driving mechanism 4 is arranged on the outer side wall of the case body 1, and the driving mechanism 4 is used for driving the transmission component 2 to rotate. It should be understood that the above-mentioned driving mechanism 4 has a simple electric control logic and can drive the transmission component 2 to rotate. The driving mechanism 4 here is composed of a driving gear and a motor. The motor controls the rotation of the driving gear to drive the transmission component 2 to transmit. Here, four control driving gears are taken as an example. The four control driving gears are evenly arranged on the outer side wall of the case body 1. Since the contact points between the gear transmissions are reasonably distributed, the acting force can be effectively dispersed, the wear and tear is reduced, the energy loss in the transmission process is reduced, and the vibration and noise caused by poor cooperation are reduced. Thus, the performance of the entire transmission system is optimized, the transmission efficiency is improved, and the coherence and accuracy of power transmission are ensured. The case inner wall assembly 3 is located in the inside of the case body 1, the case inner wall assembly 3 is used for constituting the inner diameter of the case inner wall, one end of the case inner wall assembly 3 is rotationally connected with the transmission component 2, the other end of the case inner wall assembly 3 is rotationally connected with the second end face 12, the transmission component 2 is used for driving the case inner wall assembly 3 to rotate, and the case inner wall assembly 3 is used for changing the inner diameter of the case inner wall and the perforation rate of the case inner wall.

[0035] On this basis, by actively changing the inner diameter of the case inner wall, the best blade tip clearance can be adjusted under different working conditions. On this basis, reducing the inner diameter of the case inner wall under appropriate conditions can reduce the blade tip clearance. Reducing the blade tip clearance can effectively reduce the decline of the compressor stability margin and reduce the influence of the blade tip leakage flow on the compressor loss, thereby reducing the specific fuel consumption. At the same time, reducing the inner diameter of the case inner wall, the perforation coverage rate of the case inner wall will increase, so that the perforation rate of the case inner wall remains unchanged or decreases, which is beneficial to the stability of the expansion stability margin of the compressor, effectively reduces the risk of compressor stall or surge, and ensures the safety of the engine. According to different working conditions, the inner diameter of the above-mentioned case inner wall and the perforation rate of the case inner wall are actively changed, which can ensure the safety of the engine, thereby effectively solving the problem that the traditional case processing in the prior art cannot simultaneously meet the requirements of multiple working conditions.

[0036] For example, the case inner wall assembly 3 includes a plurality of wall plate units 31, as shown in the drawings. Figure 1 As shown, the leading end of each wall plate unit 31 is connected with the trailing end of each wall plate unit 31 with a gap, or the leading end of each wall plate unit 31 overlaps with the trailing end of each wall plate unit 31.

[0037] In actual application, as shown in the drawings,Figure 1 As shown in the figure, the first end of each wall plate unit 31 and the last end of each wall plate unit 31 can be understood as along the circumferential direction of the inner wall of the casing, the connection mode of the adjacent two wall plate units 31 has two kinds, one is that the first end of each wall plate unit 31 and the last end of each wall plate unit 31 are connected with a gap, and the other is that the first end of each wall plate unit 31 and the last end of each wall plate unit 31 overlap with each other. When the transmission component 2 drives the wall plate unit 31 to rotate, the adjacent wall plate units 31 will gradually change from gap connection to mutual overlap, so as to change the inner diameter of the inner wall of the casing.

[0038] Figure 3 Figure 1 is a structural schematic diagram of a wall plate unit 31 according to an embodiment of the present disclosure, as shown in the figure, Figure 3 As shown in the figure, each wall plate unit 31 comprises a first support rod 311, a second support rod 312 and a wall plate 313, the wall plate 313 is provided with a second limiting groove 315 and a first through hole 314, the first support rod 311 is arranged in the second limiting groove 315, and the second support rod 312 is arranged in the first through hole 314. It can be understood that the second limiting groove 315 arranged on the wall plate 313 is arranged on the wall plate 313, and the uniformly arranged second limiting groove 315 helps to realize more accurate control function of the wall plate unit 31, and can accurately adjust the position, angle or motion state of the related components. The geometric length of the first support rod 311 and the second support rod 312 extending out of the wall plate 313 near the first end face is L1, and the geometric length of the first support rod 311 and the second support rod 312 extending out of the wall plate 313 near the second end face is L2, L1 < L2, which can quickly install the wall plate unit 31 on the inner wall of the casing during assembly, improve the assembly efficiency, and facilitate quality inspection and debugging after assembly, which helps the whole product to complete the assembly quickly and smoothly and put into use.

[0039] As shown in the figure, Figure 3 As shown in the figure, a plurality of second through holes 316 are arranged in a matrix on the wall plate 313. During the operation of the casing, factors such as movement of internal parts and temperature change may cause internal air pressure to change, and the second through hole 316 can exhaust the high-pressure gas in the casing to balance the air pressure inside and outside the casing and ensure the safety of the casing structure. In addition, the second through hole 316 can allow external air to enter in time to avoid affecting the normal movement of the internal mechanism due to negative pressure, such as preventing abnormal adsorption or movement obstruction between parts due to negative pressure. At the same time, the second through hole 316 can also accelerate the convection of air and take away heat, which helps to keep the internal temperature of the casing within a suitable range, thereby prolonging the service life of the internal components.

[0040] Figure 4 Figure 2 is a structural schematic diagram of a transmission component 2 according to an embodiment of the present disclosure, as shown in the figure, Figure 4As shown, the transmission component 2 has multiple first arc-shaped through holes 21, each of which is evenly distributed along the circumferential direction of the transmission component 2. The second end face of the casing body has multiple second arc-shaped through holes, each of which is evenly distributed along the circumferential direction of the casing body.

[0041] In practical applications, such as Figure 4 As shown, when the wall panel unit is assembled, the evenly distributed multiple first arc-shaped through holes 21 and multiple second arc-shaped through holes, compared with the unevenly distributed structure, can better resist deformations such as torsion and bending, thereby enhancing the overall structural stability of the casing and effectively avoiding wear and fatigue damage to the wall panel unit caused by excessive local stress. Meanwhile, the distribution structure of each first arc-shaped through hole 21 and each second arc-shaped through hole is as follows... Figure 1 As shown, the first arc-shaped through hole 21 and the second arc-shaped through hole can be understood as having overlapping axial projection positions. This reduces the assembly difficulty of inserting the wall panel unit into the inner wall of the casing during assembly, improving assembly efficiency. Simultaneously, it facilitates disassembly and replacement if one of the wall panel units is damaged. Furthermore, the first arc-shaped through hole 21 and the second arc-shaped through hole offer better versatility when used in different applications or combined with different components. For example, the same model of casing can be easily used in various similar but slightly different mechanical devices, as long as the mating components can adapt to the size and arrangement of the slots.

[0042] Figure 5 This is a further schematic diagram of the structure of the casing body according to an embodiment of the present disclosure, such as... Figure 5 As shown, the geometric center of the drive mechanism 4 and the geometric center of the transmission component 2 are located on the same axis. When the geometric centers of the drive mechanism 4 and the transmission component 2 are on the same axis, the axial force generated by the drive mechanism 4 can be directly and efficiently transmitted to the transmission component, reducing energy loss caused by force decomposition. Due to the more uniform force transmission and more stable motion, the mutual wear between the drive mechanism and the transmission component is significantly reduced. At the same time, good motion stability also reduces impact wear caused by vibration, extending the service life of bearings and other mating components. Secondly, when the drive mechanism 4 malfunctions and needs to be replaced, maintenance personnel can quickly replace it according to the original central axis, and can ensure that the replaced system still maintains good performance.

[0043] For example, such as Figure 4 - Figure 5As shown, the circumferential dimension of the first arc-shaped through hole 21 in the circumferential direction is represented by d1, the circumferential dimension of the second arc-shaped through hole 121 in the circumferential direction is represented by d2, the dimension from the leading end of the wallboard unit to the trailing end of the wallboard unit is represented by d3, d1>d3, d2>d3, d1=d2, when the wallboard unit rotates in the first arc-shaped through hole 21 and the second arc-shaped through hole 121, the first arc-shaped through hole 21 and the second arc-shaped through hole 121 can provide a certain activity space for the wallboard unit, and at the same time, when the wallboard unit is inscribed in the first arc-shaped through hole 21 and the second arc-shaped through hole 121 respectively, at this time, the adjacent wallboard units partially overlap, and the perforation rate of the inner wall of the casing is changed.

[0044] The present disclosure also provides an engine comprising the shutter casing described above. It should be understood that the engine described above can be an engine in the field of aerospace, and can also be an engine in the field of transportation, which is not listed here.

[0045] Compared with the prior art, the engine provided by the present disclosure has the same beneficial effects as the shutter casing, which will not be repeated here.

[0046] The above description is only some embodiments of the present disclosure and an explanation of the technical principles applied. Those skilled in the art should understand that the disclosure range involved in the present disclosure is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the above features are replaced with the technical features disclosed in the present disclosure (but not limited to) having similar functions to form technical solutions.

[0047] Although some specific embodiments of the present disclosure have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, not for limiting the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A shutter magazine, characterized by, The shutter magazine comprises a magazine main body, a transmission component, a driving mechanism and a magazine inner wall assembly, the magazine main body has a first end face and a second end face, an outer side wall of the magazine main body close to the first end face is provided with a first limiting groove for placing the transmission component, and the transmission component is located in the first limiting groove; the driving mechanism is arranged on the outer side wall of the magazine main body and is used for driving the transmission component to rotate; the magazine inner wall assembly is located in the interior of the magazine main body and is used for forming the inner diameter of the magazine inner wall, one end of the magazine inner wall assembly is rotationally connected with the transmission component, and the other end of the magazine inner wall assembly is rotationally connected with the second end face; the transmission component is used for driving the magazine inner wall assembly to rotate, and the magazine inner wall assembly is used for changing the inner diameter of the magazine inner wall and the perforation rate of the magazine inner wall.

2. The shutter magazine of claim 1, wherein, The magazine inner wall assembly comprises a plurality of wall plate units, and the leading end part of each wall plate unit is gap-connected with the tail end part of each wall plate unit, or the leading end part of each wall plate unit overlaps with the tail end part of each wall plate unit.

3. A shutter magazine according to claim 2, characterised in that Each wall plate unit comprises a first supporting rod, a second supporting rod and a wall plate, the wall plate is provided with a second limiting groove and a first through hole, the first supporting rod is arranged in the second limiting groove, and the second supporting rod is arranged in the first through hole.

4. A shutter magazine according to claim 3, characterised in that The geometric length of the first supporting rod and the second supporting rod extending out of the wall plate close to the first end face is L1, and the geometric length of the first supporting rod and the second supporting rod extending out of the wall plate close to the second end face is L2, L1 < L2.

5. The shutter magazine of claim 2, wherein, A plurality of second through holes in a matrix distribution are arranged on the wall plate.

6. The shutter magazine of claim 1, wherein, A plurality of first arc-shaped through holes are arranged on the transmission component, and each first arc-shaped through hole is uniformly distributed along the circumferential direction of the transmission component.

7. A shutter magazine according to claim 6, characterised in that A plurality of second arc-shaped through holes are arranged on the second end face of the magazine main body, and each second arc-shaped through hole is uniformly distributed along the circumferential direction of the magazine main body.

8. A shutter magazine according to claim 7, characterised in that The first arc-shaped through hole and the second arc-shaped through hole overlap in the axial projection position.

9. The shutter magazine of claim 1, wherein, The geometric center of the driving mechanism and the geometric center of the transmission component are located on the same axis.

10. An engine characterized by, The shutter magazine comprises a magazine main body, a transmission component, a driving mechanism and a magazine inner wall assembly, the magazine main body has a first end face and a second end face, an outer side wall of the magazine main body close to the first end face is provided with a first limiting groove for placing the transmission component, and the transmission component is located in the first limiting groove; the driving mechanism is arranged on the outer side wall of the magazine main body and is used for driving the transmission component to rotate; the magazine inner wall assembly is located in the interior of the magazine main body and is used for forming the inner diameter of the magazine inner wall, one end of the magazine inner wall assembly is rotationally connected with the transmission component, and the other end of the magazine inner wall assembly is rotationally connected with the second end face; the transmission component is used for driving the magazine inner wall assembly to rotate, and the magazine inner wall assembly is used for changing the inner diameter of the magazine inner wall and the perforation rate of the magazine inner wall. The shutter magazine comprises a magazine main body, a transmission component, a driving mechanism and a magazine inner wall assembly, the magazine main body has a first end face and a second end face, an outer side wall of the magazine main body close to the first end face is provided with a first limiting groove for placing the transmission component, and the transmission component is located in the first limiting groove; the driving mechanism is arranged on the outer side wall of the magazine main body and is used for driving the transmission component to rotate; the magazine inner wall assembly is located in the interior of the magazine main body and is used for forming the inner diameter of the magazine inner wall, one end of the magazine inner wall assembly is rotationally connected with the transmission component, and the other end of the magazine inner wall assembly is rotationally connected with the second end face; the transmission component is used for driving the magazine inner wall assembly to rotate, and the magazine inner wall assembly is used for changing the inner diameter of the magazine inner wall and the perforation rate of the magazine inner wall.

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