Ice flake introduction device

Abstract

The present application belongs to the field of aero-engines, and particularly relates to an ice flake introduction device, which is installed at the engine inlet, in front of the air intake device, reduces the impact of the equipment on the engine air intake through reasonable layout and is analyzed through intake airflow field simulation calculation; utilizes dual electromagnets to drive the initial movement of the ice flakes, and can achieve controllable movement of the ice flakes; the ice flake introduction mechanism extends into the air intake device and is thrown out close to the engine inlet to ensure that the ice flake introduction path is minimized and is sucked into the engine immediately after being thrown; a sliding path protection device for the ice flakes is designed to reduce the impact of the airflow on the ice flakes during the sliding process; and the slide rail profile is reasonably designed to reduce the resistance during the sliding process.

Description

Technical Field

[0001] The present application belongs to the field of aero-engines, and in particular relates to an ice flake introduction device. Background Art

[0002] According to GJB241A "General Specifications for Aviation Turbojets and Turbofans", GJB4187-2001 "Requirements for Ice Swallowing Tests for Aircraft Engines" and engine model development specifications, when an aircraft engine is conducting an ice swallowing test, the test bench needs to use a set of special ice flake introduction devices to introduce ice flakes into the engine. Before the ice flakes leave the device, they should remain intact to complete the aircraft engine ice swallowing test. The patented invention is an ice flake introduction device installed above the air inlet. By connecting the ice flake introduction device to the mounting bracket, ice flakes can be introduced into the engine through the ice box and the drive motor.

[0003] The ice swallowing test of small and medium-sized turboshaft engines uses a slide rail type ice throwing device. A fixed bracket is set in front of the engine air intake device, and a slide rail with a certain inclination angle is installed on the bracket. Before the test, ice slices are placed in an ice box on the top of the slide rail, and the ice box is adsorbed by an electromagnet. During the test, the electromagnet is powered off, and the ice box flips under the action of gravity, throwing the ice slices onto the slide rail, and the ice slices slide along the slide rail into the interior of the engine air intake device.

[0004] Due to the huge differences in the intake flow, flow rate and structure of turbofan and turboshaft engines, the ice-dropping device used in turboshaft engines cannot be applied to turbofan engines.

[0005] The slide rail ice-dropping device used in the turboshaft engine has the following shortcomings: the ice box is flipped by gravity, and after the ice box is flipped by gravity, it impacts the slide rail and stops, the ice pieces slide out, the gravity flipping process cannot be effectively controlled, and the impact action can easily damage the ice pieces; the sliding path of the ice pieces on the ice-dropping device is long, and the equipment factors and airflow disturbances make it impossible to ensure the sliding action and integrity of the ice pieces; the path of the ice pieces into the engine after they leave the device is long, and the ice pieces are prone to collide with the air intake device and damage their integrity during free flight. Summary of the invention

[0006] In order to solve the above problem, the present application provides an ice flake introduction device for introducing ice flakes into an engine air intake (4), comprising:

[0007] Bracket, lifting seat, introduction mechanism;

[0008] The lifting seat is connected to the bracket via a vertical guide rail, so that the lifting seat has the freedom to move in the vertical direction relative to the bracket. A driving device is also installed between the lifting seat and the bracket, and the driving device is used to adjust the height of the lifting seat and fix the lifting seat at a preset height;

[0009] The introduction mechanism includes: a slide rail, a driving electromagnet and a stopper electromagnet. The upper end surface of the slide rail has a slide groove for accommodating ice flakes. One end of the slide rail extends into the engine air intake, and the other end is equipped with a driving electromagnet. The axial thrust of the driving electromagnet causes the ice flakes in the slide groove to move along the slide groove. The stopper electromagnet is installed on the upper end surface of the slide rail. The output shaft of the stopper electromagnet limits the ice flakes by extending into the slide groove. The output shaft of the stopper electromagnet cancels the limit on the ice flakes by withdrawing from the slide groove.

[0010] The lower end surface of the slide rail is hinged to the boss of the lifting seat, and one end of the slide rail is hinged to the lifting seat through an adjustable connecting rod, and the adjustable connecting rod is used to adjust the relative angle between the slide rail and the lifting seat.

[0011] Preferably, the slide rail has teeth and grooves along the moving direction of the ice flakes. The design of the teeth and grooves can effectively reduce the adhesion between the ice flakes and the slide rail, and avoid ice flakes being blocked and broken.

[0012] Preferably, the driving device comprises: a screw, a lifting seat articulated screw, and the bracket has an internal thread at a position corresponding to the screw, and the lifting seat moves on the guide rail of the bracket through the screwing of the screw and the internal thread, and the self-locking function of the screw can keep the lifting seat at a preset position.

[0013] Preferably, a protective plate is installed on the upper end surface of the slide rail, and the protective plate blocks ice flakes on the slide rail.

[0014] Preferably, the output shaft of the driving electromagnet has a shaped push piece, one end of which is connected to the output shaft of the driving electromagnet, and the other end extends to the end face of the ice sheet by bending in a shape, and the shaped push piece transmits the thrust of the output shaft of the driving electromagnet to the end face of the ice sheet.

[0015] Preferably, there is an opening for filling ice flakes on the side of the slide rail slot.

[0016] The advantages of the present application include: the introduction device is installed at the engine inlet, in front of the air intake device, and the impact of the equipment on the engine intake is reduced through reasonable layout and analyzed through intake airflow field simulation calculation; the initial movement of the ice flakes is driven by dual electromagnets to achieve controllable movement of the ice flakes; the ice flake introduction mechanism extends into the air intake device and is thrown close to the engine inlet to ensure that the ice flake introduction path is minimized and is sucked into the engine immediately after being thrown; an ice flake sliding path protection device is designed to reduce the impact of airflow on the ice flakes during the sliding process; and the slide rail profile is reasonably designed to reduce the resistance during the sliding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a borneol introduction device in a preferred embodiment of the present application;

[0018] Figure 2 This is a schematic diagram of an introduction mechanism of a preferred embodiment of the present application;

[0019] Figure 3 It is a luxurious schematic diagram of a preferred embodiment of the present application;

[0020] Figure 4 This is a schematic diagram of a slide rail profile in a preferred embodiment of the present application;

[0021] Among them, 1-bracket, 2-lifting seat, 3-introduction mechanism, 4-engine air intake, 5-adjustable connecting rod, 31-driving electromagnet, 32-block electromagnet, 33-slide rail, 34-ice piece, 35-shaped push piece, 36-protective plate. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the implementation of this application clearer, the technical scheme in the implementation of this application will be described in more detail in combination with the drawings in the implementation of this application. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described implementation is a part of the implementation of this application, not all of the implementations. The implementation described below with reference to the drawings is exemplary and is intended to be used to explain this application, and cannot be understood as a limitation on this application. Based on the implementation in this application, all other implementations obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The implementation of this application is described in detail below in combination with the drawings.

[0023] The present application provides a borneol introduction device such as Figure 1 As shown, the method for introducing ice flakes into the engine air intake 4 comprises:

[0024] Bracket 1, lifting seat 2, introduction mechanism 3;

[0025] The lifting seat 2 is connected to the bracket 1 through a vertical guide rail, so that the lifting seat 2 has the freedom to move in the vertical direction relative to the bracket 1. A driving device is also installed between the lifting seat 2 and the bracket 1, and the driving device is used to adjust the height of the lifting seat 2 and fix the lifting seat 2 at a preset height;

[0026] Importing institution 3 Figures 2-3 The figure includes: a slide rail 33, a driving electromagnet 31 and a stopper electromagnet 32. The upper end surface of the slide rail 33 has a slide groove for accommodating ice flakes 34. One end of the slide rail 33 extends into the engine air intake 4, and the other end is installed with a driving electromagnet 31. The axial thrust of the driving electromagnet 31 causes the ice flakes 34 in the slide groove to move along the slide groove; the stopper electromagnet 32 ​​is installed on the upper end surface of the slide rail 33. The output shaft of the stopper electromagnet 32 ​​limits the ice flakes 34 by extending into the slide groove, and the output shaft of the stopper electromagnet 32 ​​cancels the limitation on the ice flakes 34 by withdrawing from the slide groove.

[0027] The lower end surface of the slide rail 33 is hinged to the boss of the lifting seat 2 , and one end of the slide rail 33 is hinged to the lifting seat 2 through an adjustable connecting rod 5 , and the adjustable connecting rod 5 is used to adjust the relative angle between the slide rail 33 and the lifting seat 2 .

[0028] Preferably, the slide rail 33 has teeth along the moving direction of the ice flakes 34, such as Figure 4 As shown, the tooth groove design can effectively reduce the adhesion between the ice slices and the slide rails, avoiding ice slice blockage and ice slice breakage.

[0029] Preferably, the driving device includes: a screw, the lifting seat 2 is articulated with the screw, and the bracket 1 has an internal thread at a position corresponding to the screw, and the lifting seat 2 moves on the guide rail of the bracket 1 through the screwing of the screw and the internal thread, and the self-locking function of the screw can keep the lifting seat 2 at a preset position.

[0030] Preferably, a protective plate is installed on the upper end surface of the slide rail 33 , and the protective plate blocks the ice flakes 34 on the slide rail 33 .

[0031] Preferably, the output shaft of the driving electromagnet 31 has a shaped push piece 35, one end of which is connected to the output shaft of the driving electromagnet 31, and the other end extends to the end face of the ice sheet 34 through a shaped bending. The shaped push piece 35 transmits the thrust of the output shaft of the driving electromagnet 31 to the end face of the ice sheet 34.

[0032] Preferably, an opening for filling ice flakes 34 is provided on the side of the slide groove of the slide rail 33, and a support plate can be installed at the opening to facilitate filling of ice flakes.

[0033] The advantages of the present application include: the introduction device is installed at the engine inlet, in front of the air intake device, and the impact of the equipment on the engine intake is reduced through reasonable layout and analyzed through intake airflow field simulation calculation; the initial movement of the ice flakes is driven by dual electromagnets to achieve controllable movement of the ice flakes; the ice flake introduction mechanism extends into the air intake device and is thrown close to the engine inlet to ensure that the ice flake introduction path is minimized and is sucked into the engine immediately after being thrown; an ice flake sliding path protection device is designed to reduce the impact of airflow on the ice flakes during the sliding process; and the slide rail profile is reasonably designed to reduce the resistance during the sliding process.

[0034] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. An ice flake introduction device for introducing ice flakes into an engine air intake (4), characterized in that: include: Bracket (1), lifting seat (2), introduction mechanism (3); The lifting seat (2) and the support (1) are connected via a vertical guide rail, so that the lifting seat (2) has the freedom to move in the vertical direction relative to the support (1); a driving device is also installed between the lifting seat (2) and the support (1), and the driving device is used to adjust the height of the lifting seat (2) and fix the lifting seat (2) at a preset height; The introduction mechanism (3) comprises: a slide rail (33), a driving electromagnet (31) and a stopper electromagnet (32); the upper end surface of the slide rail (33) is provided with a slide groove for accommodating ice flakes (34); one end of the slide rail (33) extends into an engine air intake (4); the other end is provided with a driving electromagnet (31); the axial thrust of the driving electromagnet (31) causes the ice flakes (34) in the slide groove to move along the slide groove; the stopper electromagnet (32) is installed on the upper end surface of the slide rail (33); the output shaft of the stopper electromagnet (32) limits the position of the ice flakes (34) by extending into the slide groove; and the output shaft of the stopper electromagnet (32) cancels the limit on the ice flakes (34) by withdrawing from the slide groove. The lower end surface of the slide rail (33) is hinged to a boss provided on the lifting seat (2), and one end of the slide rail (33) is hinged to the lifting seat (2) via an adjustable connecting rod (5), and the adjustable connecting rod (5) is used to adjust the relative angle between the slide rail (33) and the lifting seat (2).

2. The ice flake introduction device according to claim 1, characterized in that: The slide rail (33) has tooth grooves along the moving direction of the ice flakes (34).

3. The ice flake introduction device according to claim 1, characterized in that: The driving device comprises: a lead screw, a lifting seat (2) articulated with the lead screw, and a support (1) having an internal thread at a position corresponding to the lead screw, wherein the lifting seat (2) moves on a guide rail of the support (1) by screwing the lead screw into the internal thread, and the self-locking function of the lead screw can keep the lifting seat (2) at a preset position.

4. The ice flake introduction device according to claim 1, characterized in that: A protective plate (36) is installed on the upper end surface of the slide rail (33), and the protective plate (36) is used to shield ice flakes (34) from the slide rail (33).

5. The ice flake introduction device according to claim 1, characterized in that: The output shaft of the driving electromagnet (31) has a shaped push piece (35), one end of which is connected to the output shaft of the driving electromagnet (31), and the other end of which is extended to the end face of the ice sheet (34) by bending in a shaped manner. The shaped push piece (35) transmits the thrust of the output shaft of the driving electromagnet (31) to the end face of the ice sheet (34).

6. The ice flake introduction device according to claim 1, characterized in that: An opening for filling ice flakes (34) is provided on the side of the slide groove of the slide rail (33).

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