CN110873647A - Rolling and pitching attitude test bed for micro engine - Google Patents

Abstract

The invention relates to a miniature engine test bed. A rolling and pitching attitude test bed for a micro engine comprises the micro engine and a supporting base and is characterized by further comprising a pitching test bed, wherein the pitching test bed is arranged on the supporting base through a pitching device which drives the pitching test bed to perform pitching and pitching motions; the miniature engine is fixedly arranged on the rolling platform, and the rolling platform is arranged on the pitching test bed through a rolling device for driving the rolling platform to perform rolling motion; the rolling platform is provided with a vibration sensor, a rotating speed sensor and an inclination angle sensor, the tail nozzle temperature sensor sends sensing signals to the electrical control cabinet, and meanwhile, the electrical control cabinet is electrically connected with the pitching device and the rolling device and is used for controlling the pitching device and the rolling device. The invention realizes the accurate control of the pitch angle and the roll angle of the turbojet engine, simulates the real attitude of the miniature turbojet engine in the air, and accurately obtains various technical parameters of the miniature turbojet engine during the roll and pitch.

Description

Micro-engine roll pitch attitude test bench

technical field

The present invention relates to a micro-engine test bench.

Background technique

Aero-engine technology has always been regarded as the "crown jewel of industrial technology", and aero-engines provide aircraft with the power required for flight. The rapid development of small aircraft, general aviation aircraft and unmanned aerial vehicles has put forward higher requirements for the performance of micro-turbojet engines. At present, the test benches of micro turbojet engines are mostly fixed and simple test benches, which cannot simulate various real pitching actions of the aircraft in the air.

In the utility model patents and invention patents with publication numbers CN 208076159 U and CN 108387379 A, a micro-turbine engine test bench is proposed, which is mainly used for the installation and testing of micro-turbojet engines and micro-turboprop engines. The bracket is suitable for different types of turbine engines, and can monitor and record the engine speed, temperature and other data in real time.

In the invention patent with publication number CN 102507204 A, a movable micro-miniature turbojet engine test bench is proposed, which mainly includes a test bench and a control cabinet, and mainly controls the rotation speed, air intake flow, fuel consumption rate of the micro turbojet engine. , Measure the parameters such as temperature and pressure after the compressor.

In the utility model patent with publication number CN 202693314 U, a turbojet engine test bench is proposed. It is used to test the thrust, temperature and speed of small turbojet engines, and it is easy to move, and can be used for static engine tests in various occasions.

With the development of science and technology in recent years, micro-aircraft has developed rapidly. Common small consumer-grade aircraft mostly use motors as power sources, and four-axis aircraft are the most common, while large-scale model aircraft, industrial aircraft, and general aviation / UAV A micro-turbine engine is used as the main power source. The most common power source is a micro-turbojet engine.

In the above-mentioned patents, the patents with the publication numbers of CN 208076159 U, CN 108387379 A, CN 102507204 A and CN202693314 U all propose a test bench for measuring the micro-turbojet engine, which can measure the rotational speed, temperature, thrust of the micro-turbojet engine. However, the test bench of its structure can only test various technical parameters of the micro-turbojet engine in a fixed attitude, and cannot simulate the real attitude of the aircraft engine in the air, that is, the roll and pitch attitude. Therefore, the technical parameters of the aircraft engine in the actual attitude in the air cannot be obtained.

SUMMARY OF THE INVENTION

The object of the present invention is to avoid the deficiencies of the prior art and provide a micro-engine attitude test bench that can simulate the real attitude of the micro-engine in the air roll and pitch, and measure the technical parameters of the micro-turbojet engine in the instantaneous attitude under the real attitude .

In order to achieve the above purpose, the technical solution adopted in the present invention is: a micro-engine roll-pitch attitude test bench, comprising a micro-engine, a support base, and a pitch test bench, and the pitch test bench is driven to perform pitch and pitch motions. The device is installed on the support base; the micro-engine is fixedly installed on the rolling table, and the rolling table is installed on the pitching test bench through the rolling device that drives it to perform rolling motion, and the tension pressure sensor is installed under the rolling device. On the pitching test bench; a pressure sensor and a temperature sensor after the compressor are arranged on the micro-engine, and an oil pipe quick joint installed on the side of the air inlet at the front end of the micro-engine; a vibration sensor, a vibration sensor, Speed sensor, inclination sensor, and tailpipe temperature sensor; it also includes a data acquisition card and a flow meter installed on the lower support platform, and the engine kerosene is connected to the oil pipe quick joint of the micro-turbojet engine through the flow meter; the vibration sensor, speed Sensor, inclination sensor, tail nozzle temperature sensor, temperature sensor after compressor, pressure sensor and tension pressure sensor all send sensing signals to the data acquisition card, which are converted into digital signals by the data acquisition card and then transmitted to the electrical control cabinet. The control cabinet is also electrically connected with the pitching device and the rolling device for controlling the pitching device and the rolling device.

Further, the pitching device includes two connecting shafts provided at the bottom of the pitching test bench through the connecting shaft bracket, and the two connecting shafts are arranged corresponding to the front and rear ends of the micro-engine; one of the connecting shafts is movably passed through the support. In the hole at one end of the rib plate, the other end of the support rib plate is fixedly arranged on the support base; it also includes a servo electric cylinder, the upper bracket of the servo electric cylinder provided on the upper end of the servo electric cylinder is movably connected with another connecting shaft; on the support base The connecting shaft of the lower support of the servo electric cylinder is fixed through the second connecting shaft support, the lower support of the servo electric cylinder provided at the lower end of the servo electric cylinder is movably connected with the connecting shaft of the lower support, and the said servo electric cylinder is electrically connected with the electrical control cabinet , The electrical control cabinet controls the up and down movement of the servo electric cylinder to realize the pitch and pitch movement of the pitch test bench.

Further, the support base includes an upper support plate, a lower support plate and a vertical plate, the upper support plate is arranged on the upper part of one side of the vertical plate, the lower support plate is arranged on the lower part of the other side of the vertical plate, and the support ribs The plate is fixedly arranged on the upper support plate, and the lower bracket connecting shaft is fixedly arranged on the lower support plate.

Further, the rolling device includes a rolling table, the rolling table is installed on the rolling table bracket through the supporting rotor, the rolling table bracket is arranged on the pitching test table, the rolling table rotates along the axis of the micro-engine, and the rolling table has The semi-arc-shaped groove has a half-arc-shaped cross section. The micro-motor is fixedly installed in the semi-arc-shaped groove of the rolling table. A gear is arranged on the outer surface of one end of the rolling table. The gear meshes with the motor gear, and the motor drives the motor. The gear thus drives the rolling table to rotate; the electrical control cabinet controls the motor to realize the rolling table rotation.

Further, one end of the rolling table is also provided with a rolling table fixing block, and the rolling table fixing block is fixedly installed on the pitching test bench; a fixed block bearing is arranged on the rolling table fixing block, and the fixed block bearing presses the rolling table half tightly. The inside of the arc-shaped groove.

Further, a slide groove is provided at the bottom of the rolling table in the rolling direction of the rolling table, and a tension pressure sensor is arranged in the slide groove.

Further, a sensor installation platform is provided along both sides of the semi-arc groove of the rolling table, the rotational speed sensor is installed on the sensor installation platform through the rotational speed sensor positioning plate, and the inclination sensor is fixed on the sensor installation platform by bolts, The tail nozzle temperature sensor is supported and arranged at the exit of the tail nozzle of the micro-engine through two sensor fixing rings correspondingly arranged on the sensor installation platform.

Further, the micro-engine is fixed in the semi-arc groove of the rolling table through a positioning ring, and the vibration sensor is mounted on the positioning ring.

Further, the pressure sensor and the temperature sensor after the compressor are installed at the compressor outlet section of the micro-engine, and are symmetrically arranged in the direction perpendicular to the axis of the micro-engine, and the oil pipe quick joint is arranged at the front end of the micro-engine. Air intake side.

Further, the data acquisition card includes at least two, and they are respectively installed on both sides of the support base; the electrical control cabinet is equipped with an industrial computer, the electrical control cabinet is provided with a console, and the console is equipped with a display and a monitor. The console is used to control the pitching device and the rolling device. The display and console are electrically and mechanically connected to the industrial control, and the noise sensor is built in the console; the tension pressure sensor, rotational speed sensor, vibration sensor, tail nozzle temperature sensor and pressure The data collected by the sensor, the temperature sensor and the inclination sensor after the compressor are all received by the data acquisition card and converted into digital signals and then transmitted to the industrial computer, and displayed on the display of the console; The calculation program outputs the final thrust value at different angles on the display.

The beneficial effects of the invention are as follows: the invention mainly tests the micro-turbojet engine, and tests various technical parameters of the micro-turbojet engine when it works under different pitch and roll angles. The inclination sensor performs precise control, and the thrust sensor measures the thrust in the axial direction of the engine, and then removes the influence of the engine's own gravity through the built-in program, and calculates the thrust in the pitch attitude. In addition, temperature, rotational speed and thrust sensors are installed, which can collect the temperature, rotational speed, pressure and other data of the micro-turbojet engine in real time, and can simulate various roll and pitch attitudes of the micro-turbojet engine in the air to realize the measurement The purpose of the instantaneous pitch angle, roll angle, thrust, vibration, rotational speed, fuel consumption rate, post-compressor temperature and pressure, tail nozzle temperature and other parameters of the turbojet engine. It truly realizes the precise control of the pitch angle and roll angle of the turbojet engine, simulates the real attitude of the micro turbojet engine in the air, and accurately obtains various technical parameters of the micro turbojet engine when it rolls and pitches. Factory inspection provides data.

Description of drawings

Fig. 1 is the front perspective view of the micro-turbojet engine roll pitch attitude test bench of the present invention;

Fig. 2 is the bottom axis side view of the micro-turbojet engine roll pitch attitude test bench of the present invention;

Fig. 3 is the side view of the roll pitch attitude test bench of the micro-turbojet engine of the present invention;

Fig. 4 is the front view of the micro-turbojet engine of the present invention;

Figure 5 is an axonometric view of the console of the present invention.

Detailed ways

The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples are only used to explain the present invention, but not to limit the scope of the present invention.

Embodiment 1: As shown in Figures 1 to 5, a micro-engine roll-pitch attitude test bench includes a micro-engine 1, a support base 14, and a pitch test bench 16. The pitch test bench 16 is driven to perform pitching, The pitching device of the pitching motion is installed on the support base 14; the micro-engine 1 is fixedly installed on the rolling table 23, and the rolling table 23 is mounted on the pitching test bench 16 through the rolling device that drives it to perform the rolling motion. The pressure sensor 34 is installed on the pitch test bench 16 below the rolling device; the micro-engine 1 is provided with a pressure sensor 22, a temperature sensor 30 after the compressor, and an oil pipe installed on the side of the air inlet at the front end of the micro-engine 1 The quick joint 20; the vibration sensor 6, the rotational speed sensor 7, the inclination sensor 9, the tail nozzle temperature sensor 2 are arranged on the rolling table 23; the data acquisition card 10 and the flow meter 27 are also installed on the lower support platform 14, The engine kerosene is connected to the oil pipe quick joint 20 of the miniature turbojet engine through the flow meter 27; the vibration sensor 6, the rotational speed sensor 7, the inclination sensor 9, the tail nozzle temperature sensor 2, the temperature sensor 30 after the compressor, the pressure sensor 22 and the pull pressure sensor 34 both send the inductive signal to the data acquisition card 10, and the data acquisition card 10 converts it into a digital signal and transmits it to the electrical control cabinet 31. At the same time, the electrical control cabinet 31 is also connected with the pitch device, roll The device is electrically connected for controlling the pitch device and the roll device.

The pitching device includes two connecting shafts 24 provided at the bottom of the pitching test bench 16 through a connecting shaft bracket, and the two connecting shafts 24 are arranged corresponding to the front and rear ends of the micro-engine 1; one of the connecting shafts 24 is movably passed through. In the hole at one end of the support rib plate 25, the other end of the support rib plate 25 is fixedly arranged on the support base 14; it also includes a servo electric cylinder 13, the upper end of the servo electric cylinder 13 is provided with a servo electric cylinder upper bracket 35 and another The connecting shaft 24 is movably connected; the connecting shaft 24 of the lower support of the servo electric cylinder is fixed on the support base 14 through the second connecting shaft bracket, and the lower support 36 of the servo electric cylinder provided at the lower end of the servo electric cylinder 13 is movable with the connecting shaft 24 of the lower support The servo electric cylinder 13 is electrically connected with the electrical control cabinet 31 , and the electrical control cabinet 31 controls the servo electric cylinder 13 to move up and down so as to realize the pitch and pitch movement of the pitch test bench 16 .

The supporting base 14 includes an upper supporting plate, a lower supporting plate and a vertical plate, the upper supporting plate is arranged on the upper part of one side of the vertical plate, the lower supporting plate is arranged on the lower part of the other side of the vertical plate, and the supporting rib plate 25 It is fixedly arranged on the upper support plate, and the lower bracket connecting shaft 24 is fixedly arranged on the lower support plate.

The rolling device includes a rolling table 23, the rolling table 23 is mounted on the rolling table bracket 5 through the supporting rotor 4, the rolling table bracket 5 is arranged on the pitch test table 16, and the rolling table 23 rotates along the axis of the micro-engine 1, so The rolling table 23 has a semi-arc-shaped groove, and its cross-section is semi-arc-shaped. 18 meshes with the motor gear 11, and the motor 15 drives the motor gear 11 to drive the rolling table 23 to rotate; the electrical control cabinet 31 controls the motor 15 to realize the rolling table 23 to rotate. One end of the rolling table 23 is also provided with a rolling table fixing block 17, and the rolling table fixing block 17 is fixedly installed on the pitching test bench 16; a fixed block bearing 19 is provided on the rolling table fixing block 17, and the fixed block bearing 19 presses the rolling The inner side of the semi-arc groove of the turntable 23. The bottom of the rolling table 23 in the rolling direction of the rolling table 23 is provided with a chute groove, and the tension pressure sensor 34 is arranged in the said chute groove. A sensor installation platform is provided along the two sides of the semi-arc groove of the rolling table 23. The rotational speed sensor 7 is installed on the sensor installation platform through the rotational speed sensor positioning plate 8, and the inclination sensor 9 is fixed on the sensor installation platform by bolts. , the tail nozzle temperature sensor 2 is supported and arranged at the exit of the tail nozzle of the micro-engine 1 through two sensor fixing rings 3 correspondingly arranged on the sensor installation platform. The micro-engine 1 is fixed in the semi-arc groove of the rolling table 23 by the positioning ring 21 , and the vibration sensor 6 is installed on the positioning ring 21 .

The pressure sensor 22 and the temperature sensor 30 after the compressor are installed at the compressor outlet section of the micro-engine 1, and are symmetrically arranged in the direction perpendicular to the axis of the micro-engine 1, and the oil pipe quick joint 20 is arranged on the micro-engine 1. On the side of the intake port at the front end of engine 1.

The data acquisition card 10 includes at least two, which are respectively installed on both sides of the support base 14; the electrical control cabinet 31 is equipped with an industrial computer, the electrical control cabinet 31 is provided with a console 31, and the console 31 is installed on the top There is a display 32 and a console 33 for controlling the pitching device and the rolling device. The display 32 and the console 33 are electrically connected to the industrial control respectively, and the noise sensor is built in the console 31; the tension sensor 34 and the rotational speed sensor 7 , the vibration sensor 6, the tail nozzle temperature sensor 2 and the pressure sensor 22 and the data collected by the compressor rear temperature sensor 30 and the inclination sensor 9 are all received by the data acquisition card 10 and converted into digital signals and then transmitted to the industrial computer, And displayed on the display 32 of the console 31, through the pitch angle value of the industrial computer and the calculation program, the final thrust value at different angles is output on the display 32.

When the test is formally carried out, the engine is first started, and the display 32 displays various technical parameters of the engine detected by the above-mentioned various sensors, including thrust, rotational speed, vibration, compressor temperature, compressor pressure, tail nozzle jet temperature, fuel flow and Pitch angle and roll angle; control the extension and retraction of the servo electric cylinder through the pitch button of the console 33, at this time the pitch platform 16 starts to flip until the limit value of the pitch angle is reached, and the roll stop button on the console 33 can also be used to make The pitch angle is at a given position or the rate of change of the roll and pitch angles, so that the engine attitude test bench rolls and pitches at a given rate; the pitch can also be made by the roll stop button on the console 33 The angle is at a given position. At the same time, through the roll button on the console 33, the servo motor 15 is controlled to make the roll table 23 roll or stop rolling, simulating the roll and pitch attitude of the micro turbojet engine 1 in the air; the roll can be given by the industrial computer. and the rate of change of the pitch angle, so that the engine attitude test bench rolls and pitches at a given rate, and obtains various technical parameters of the engine in the actual attitude in the air.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (10)

1. A rolling and pitching attitude test bed for a micro engine comprises the micro engine and a supporting base and is characterized by further comprising a pitching test bed, wherein the pitching test bed is arranged on the supporting base through a pitching device which drives the pitching test bed to perform pitching and pitching motions; the miniature engine is fixedly arranged on the rolling platform, the rolling platform is arranged on the pitching test bed through a rolling device which drives the rolling platform to perform rolling motion, and the pull pressure sensor is arranged on the pitching test bed below the rolling device; the micro engine is provided with a pressure sensor, a compressor rear temperature sensor and an oil pipe quick joint arranged on the side of an air inlet at the front end of the micro engine; a vibration sensor, a rotating speed sensor, an inclination angle sensor and a tail nozzle temperature sensor are arranged on the rolling table; the system also comprises a data acquisition card and a flowmeter which are arranged on the lower supporting platform, and the engine kerosene is connected into an oil pipe quick joint of the micro turbojet engine through the flowmeter; the vibration sensor, the rotating speed sensor, the inclination angle sensor, the tail nozzle temperature sensor, the gas compressor rear temperature sensor, the pressure sensor and the pull pressure sensor send sensing signals to the data acquisition card, the sensing signals are converted into digital signals through the data acquisition card and then transmitted to the electrical control cabinet, and the electrical control cabinet is further electrically connected with the pitching device and the rolling device and used for controlling the pitching device and the rolling device.

2. The rolling and pitching attitude test bed of the micro-engine as claimed in claim 1, wherein said pitching means comprises two connecting shafts mounted on the bottom of the pitching test bed through connecting shaft supports, and the two connecting shafts are disposed corresponding to the front and rear ends of the micro-engine; one connecting shaft is movably arranged in a hole in one end of the supporting rib plate in a penetrating manner, and the other end of the supporting rib plate is fixedly arranged on the supporting base; the servo electric cylinder is arranged at the upper end of the servo electric cylinder, and an upper bracket of the servo electric cylinder is movably connected with the other connecting shaft; a servo electric cylinder lower support connecting shaft is fixed on the supporting base through a second connecting shaft support, a servo electric cylinder lower support arranged at the lower end of the servo electric cylinder is movably connected with the lower support connecting shaft, the servo electric cylinder is electrically connected with an electric control cabinet, and the electric control cabinet controls the servo electric cylinder to move up and down so as to realize the pitching and pitching movement of the pitching test bed.

3. The rolling and pitching attitude test bed for the micro-engine according to claim 2, wherein the supporting base comprises an upper supporting plate, a lower supporting plate and a vertical plate, the upper supporting plate is disposed on the upper portion of one side of the vertical plate, the lower supporting plate is disposed on the lower portion of the other side of the vertical plate, the supporting rib plate is fixedly disposed on the upper supporting plate, and the lower support connecting shaft is fixedly disposed on the lower supporting plate.

4. The microengine roll-pitch attitude testing stand as claimed in claim 1, wherein the rolling device comprises a roll table mounted on a roll table support by a support rotor, the roll table support being disposed on the pitch testing stand, the roll table being rotatable along the axis of the microengine, the roll table having a semi-arc recess with a semi-arc cross-section, the microengine being fixedly mounted in the semi-arc recess of the roll table, a gear being provided on an outer surface of one end of the roll table, the gear being engaged with a gear of a motor, the motor driving the gear of the motor thereby rotating the roll table; the electric control cabinet controls the motor to realize the rotation of the rolling table.

5. The attitude test bed of a micro-engine according to claim 4, wherein a roll bed fixing block is further provided at one end of the roll bed, and the roll bed fixing block is fixedly mounted on the pitch test bed; and a fixed block bearing is arranged on the fixed block of the rolling table and tightly presses the inner side of the semi-arc-shaped groove of the rolling table.

6. The attitude test bed of a micro-engine according to claim 4, wherein a slide groove is provided at the bottom of the roll table in the rolling direction of the roll table, and a tension/pressure sensor is provided in the slide groove.

7. The attitude testing stand for the micro-engine according to claim 4, wherein sensor mounting platforms are provided along both sides of the semi-arc recess of the rolling table, the rotation speed sensor is mounted on the sensor mounting platforms through a rotation speed sensor positioning plate, the tilt sensor is fixed on the sensor mounting platforms through bolts, and the jet nozzle temperature sensor is supported at the jet nozzle outlet of the micro-engine through two sensor fixing rings correspondingly provided on the sensor mounting platforms.

8. The micro-engine attitude test bed of claim 4, wherein said micro-engine is fixed in a semi-arc recess of a roll table by a positioning ring, said vibration sensor being mounted on said positioning ring.

9. The attitude test bed for the micro-engine according to claim 1, wherein the pressure sensor and the compressor rear temperature sensor are installed at the outlet section of the compressor of the micro-engine and symmetrically arranged in the direction perpendicular to the axis of the micro-engine, and the oil pipe quick connector is arranged on the side of the air inlet at the front end of the micro-engine.

10. The attitude test bed of a micro-engine according to any one of claims 1 to 9, wherein said data acquisition cards comprise at least two and are respectively mounted on both sides of said supporting base; an industrial personal computer is arranged in the electrical control cabinet, a control console is arranged on the electrical control cabinet, a display and a control console for controlling the pitching device and the rolling device are arranged on the control console, and the display and the control console are respectively and electrically connected with the industrial personal computer; the data collected by the tension pressure sensor, the rotating speed sensor, the vibration sensor, the tail nozzle temperature sensor, the pressure sensor, the gas compressor rear temperature sensor and the inclination angle sensor are received by the data acquisition card, converted into digital signals and transmitted to the industrial personal computer, and displayed on a display of the console, and final thrust values at different angles are output on the display through the pitching angle value and the calculation program of the industrial personal computer.

Images