阅读说明：本技术 一种改进航空发动机风扇进口导叶调节的机匣 (A kind of casing for improving aerial engine fan entry guide vane and adjusting ) 是由 吴秀宽 冀国锋 林森 刘俊杰 莫鹏 李俊励 杨加寿 孙瑛聪 吴俊� 尹先桃 林垲 于 2019-08-13 设计创作，主要内容包括：本发明公开了一种改进航空发动机风扇进口导叶调节的机匣,机匣的外表面沿作动环的运动方向间隔设有多个凸台,凸台的高度和位置与作动环配合,使作动环可转动的套设在凸台上；本发明的机匣设计了一种新型风扇进口导叶调节机构结构,减少零件的装配数量,满足作动环同心度同时,使调节规律达到一致,并且取消支架结构以提高了作动环的强度,本发明结构简单,易于加工、装配和维护。(The invention discloses a kind of casing that improvement aerial engine fan entry guide vane is adjusted, the outer surface of casing is equipped at intervals with multiple boss, the height of boss and position along the direction of motion for making rotating ring and makees rotating ring cooperation, makes to make rotating ring to be rotatably set on boss；Casing of the invention devises a kind of New Type of Fan entry guide vane regulating mechanism structure, reduce the assembly quantity of part, satisfaction makees rotating ring concentricity simultaneously, Rule adjusting is set to reach consistent, and cancel supporting structure to improve the intensity for making rotating ring, the configuration of the present invention is simple, easy to process, I& M.)

1. a kind of casing for improving aerial engine fan entry guide vane and adjusting, the outer surface of casing is along the direction of motion for making rotating ring It is equipped at intervals with multiple boss, the height of boss and position and makees rotating ring cooperation, make to make rotating ring to be rotatably set on boss.

2. a kind of casing for improving aerial engine fan entry guide vane and adjusting according to claim 1, which is characterized in that The boss is strip, and length direction is identical as the direction of motion for making rotating ring, and width direction is perpendicular to length direction.

3. a kind of casing for improving aerial engine fan entry guide vane and adjusting according to claim 2, which is characterized in that Circumferential spacing between less than two adjustable vanes of the length of the boss, the width of boss are greater than the width for making rotating ring.

4. a kind of casing for improving aerial engine fan entry guide vane and adjusting according to claim 3, which is characterized in that The length of the boss is calculated by applying load and motion simulation.

5. a kind of casing for improving aerial engine fan entry guide vane and adjusting according to claim 1, which is characterized in that One boss is set between every two adjustable vane.

6. a kind of casing for improving aerial engine fan entry guide vane and adjusting according to claim 1, which is characterized in that The boss top is made of wear-resisting and small frictional force material.

7. a kind of casing for improving aerial engine fan entry guide vane and adjusting according to claim 6, which is characterized in that The boss top is made of aluminium bronze.

8. a kind of casing for improving aerial engine fan entry guide vane and adjusting according to claim 1, which is characterized in that The boss is mounted on casing by screw, and screw height is concordant with boss height.

Technical field

The invention belongs to aero-engine guide vane regulation technology field, be related to a kind of novel casing be used to improve fan into A kind of regulative mode of mouth guide vane, and in particular to casing for improving aerial engine fan entry guide vane and adjusting.

Background technique

When compressor is when off design point works, inlet guide vane rotates an angle, and compressor inlet is made to prewhirl The case where measuring relative changes, can thus making the air inlet angle of attack restoration designing state of first order working-blade, eliminates blade back On air-flow separation, avoid the generation of surge phenomenon.

Current fan inlet guide vane regulating mechanism is as shown in Figure 1, provide power, adjustment process by two hydraulic actuators In make rotating ring concentricity and deformation cause Rule adjusting asynchronous, influence engine performance.The existing big multi-pass of domestic and international engine It crosses the mounting bracket on making rotating ring to feel relieved, bracket and casing outer surface are point contact, pass through measurement bracket and casing outer wall The gap in face guarantees to make the concentricity of rotating ring.

But in the casing outside wall surface process of existing fan inlet guide vane regulating mechanism, inconvenience is to corresponding position Concentricity controlled, measurement and adjusting bracket are relative complex, and the mode of point contact is also easy to produce error during the motion.

Summary of the invention

Goal of the invention: to solve the above-mentioned problems, the present invention provides a kind of improvement aerial engine fan entry guide vanes The casing of adjusting improves guide vane regulative mode, can the concentricity effectively to corresponding position control, reduce motion process in The error of generation.

Technical solution: the casing that a modification of the present invention aerial engine fan entry guide vane is adjusted, the appearance of casing Face is equipped at intervals with multiple boss, the height of boss and position along the direction of motion for making rotating ring and makees rotating ring cooperation, and making to make rotating ring can Rotation is set on boss.

Further, boss is strip, and length direction is identical as the direction of motion for making rotating ring, and width direction is perpendicular to length Spend direction.

Further, the width of the circumferential spacing between less than two adjustable vanes of the length of boss, boss is greater than actuation The width of ring.Also, by motion simulation and apply load, can be obtained the optimization length of boss, land length by casing radius, Adjustable vane number influences, and the boss optimization length of different type of machines is different.

Further, a boss is set between every two adjustable vane.Purpose is control boss quantity, more to influence hair Motivation quality has been lacked and has been difficult to ensure that make rotating ring concentric.

Further, the material that boss top is wear-resisting and frictional force is small, such as resin material or aluminium bronze etc..

Further, boss is mounted on casing by screw, and screw height is concordant with boss height.It is connected using screw The intensity of casing can be promoted.

Advantageous effects: the casing for improving aerial engine fan entry guide vane and adjusting of the invention devises one kind New Type of Fan entry guide vane regulating mechanism structure reduces the assembly quantity of part, and satisfaction makees rotating ring concentricity simultaneously, makes to adjust and advise Rule reaches consistent, and cancels supporting structure to improve the intensity for making rotating ring, the configuration of the present invention is simple, easy to process, assembly And maintenance.

Detailed description of the invention

Fig. 1 is the case structure schematic diagram of background of invention；

Fig. 2 is case structure schematic diagram of the invention；

Fig. 3 is boss structure schematic diagram of the invention.

Specific embodiment

This part is one embodiment of the present invention, for further illustrating design of the invention.

The casing that a modification of the present invention aerial engine fan entry guide vane is adjusted, as shown in Figure 1, the appearance of casing Face is equipped at intervals with multiple boss, the height of boss and position along the direction of motion for making rotating ring and makees rotating ring cooperation, and making to make rotating ring can Rotation is set on boss.Boss is strip, and length direction is identical as the direction of motion for making rotating ring, width direction perpendicular to Length direction.Circumferential spacing between less than two adjustable vanes of the length of boss, the width of boss are greater than the width for making rotating ring. By motion simulation and apply load (land length is influenced by casing radius, adjustable vane number), the optimal length of boss can be obtained Degree.One boss is set between every two adjustable vane.Purpose is control boss quantity, and more influence engine qualities are few It is difficult to ensure that make rotating ring concentric.The material that boss top is wear-resisting and frictional force is small, such as resin material or aluminium bronze.Such as Fig. 2 Shown, there are two screw holes for boss, are then mounted on casing by screw, screw height is concordant with boss height.Utilize spiral shell Nail connection can promote the intensity of casing.

Boss height, position and can be according to actual design with the contact area for making rotating ring.

Motion simulation design is carried out to above-mentioned design: being emulated by applying load, adjusts the length in boss circumferential direction. According to aerodynamic moment suffered by hydraulic actuator and adjustable vane, shorten land length to reduce frictional force.Finally obtain this hair The bright casing for improving aerial engine fan entry guide vane and adjusting

The working principle of the invention is: major and minor hydraulic actuator driving piston, which moves forward and backward, drives two initiatively rocking arms, main Shake armband movement rotating ring and make circumferential movement along engine axis, makees rotating ring circumferential movement and remaining rocker arm is driven to link, on casing Boss ensure that the concentricity for making rotating ring, reach synergic adjustment.