CN101915622A - Aeroengine rotor component rotation test temperature measuring device - Google Patents

Abstract

The invention belongs to an aircraft engine testing technology and relates to an improvement of rotatory test temperature measuring equipment of an aircraft engine rotor part. The temperature measuring equipment comprises a baseplate (1), a lever bracket (8) and a thermocouple assembly, and is characterized by being provided with a single-arm lever mechanism formed by an electromagnet driving mechanism, a connecting bar hinge shaft (6), a lever (7), a thermocouple assembly mounting plate (11) and a connecting screw (12), wherein the electromagnet driving mechanism comprises an electromagnet mounting base (2), an electromagnet (4) and a connecting bar (5). The temperature measuring equipment has high driving reliability, and can meet the need for measuring the temperature of a rotor assembly with larger axial dimension. The installation position of the temperature measuring equipment can be adjusted freely according to the testing needs.

Description

Aeroengine rotor component rotation test temperature measuring device

technical field

The invention belongs to the testing technology of aero-engine, and relates to the improvement of a temperature-measuring device for the rotation test of the rotor part of the aero-engine.

Background technique

When aero-engine rotor components such as single disc parts or rotor assemblies are subjected to thermal rotation tests, temperature measurement is a technical difficulty due to the high-speed rotation of the tested components. At present, the structure of a thermocouple temperature measuring device is shown in FIG. 1 , which consists of a base plate 1 , a lever bracket 8 , a thermocouple assembly, a cylinder driving mechanism 16 and a double-arm scissor lever mechanism installed on the lever bracket 8 . The piston of the cylinder driving mechanism 16 is connected with the left end of the double-arm scissor lever mechanism through a connector 18, and the right end of the double-arm scissor lever mechanism is connected with a thermocouple assembly 20 respectively, when the piston of the cylinder driving mechanism 16 stretches out to the right , the left end of the double-arm scissor lever mechanism is opened under the effect of back-moving spring 19, and the right end of the double-arm scissor lever mechanism is also opened; The left end of the mechanism is closed under the action of the pulling force, so that the right end of the double-arm scissor lever mechanism is also closed. The part under test to be measured is located between the two arms at the right end of the double-arm scissor lever mechanism. The shortcoming of this temperature measuring device is: the first, cylinder driving reliability is poor. Since the temperature measuring device is located in a vacuum environment, the cylinder driving mechanism is prone to failure or failure due to leakage. Second, the opening distance of the double-arm scissor lever mechanism is limited, which cannot meet the temperature measurement needs of the rotor assembly with a large axial dimension. Third, its position must be fixed, it is difficult to flexibly adjust the installation position according to needs, and there are limitations in temperature measurement.

Contents of the invention

The object of the present invention is to propose a rotational test temperature measuring device for aero-engine rotor components, which has high driving reliability, can meet the temperature measurement requirements of rotor components with large axial dimensions, and is convenient for adjusting the installation position.

The technical solution of the present invention is: aero-engine rotor component rotation test temperature measuring device, comprising a base plate, a lever bracket and a thermocouple assembly, the base of the lever bracket is fixed on the base plate by the lever bracket fixing screw, and there is a horizontal lever bracket on the lever bracket There is a shaft hole in the shaft hole of the lever bracket. The thermocouple assembly is composed of a thermocouple holder, a set screw and a thermocouple. The thermocouple is passed through the thermocouple installation hole of the thermocouple holder. Lock the thermocouple; it is characterized in that there is a single-arm lever mechanism consisting of an electromagnet drive mechanism, a connecting rod hinge shaft, a lever, a thermocouple assembly mounting plate and connecting screws; there is a horizontal lever shaft hole in the middle of the lever, The lever shaft hole is sleeved on the lever shaft, so that the lever and the lever bracket form a hinge connection; the electromagnet drive mechanism is composed of an electromagnet mounting seat, an electromagnet and a connecting rod, and the electromagnet mounting seat is fixed on the base plate through the mounting seat fixing screw. Located on the left side of the lever bracket, the electromagnet is fixed on the electromagnet mounting base, the lower end of the connecting rod is connected with the upper end of the electromagnet moving iron core, there is a horizontal waist-shaped left hinge shaft hole at the left end of the lever, and the upper end of the connecting rod has a horizontal The connecting rod shaft hole, the connecting rod hinge shaft passes through the above connecting rod shaft hole and the left hinge shaft hole, the upper end of the connecting rod and the left end of the lever form a hinge connection, and there is a vertical through hole at the right end of the lever, the thermocouple assembly There is a mounting hole on the left side of the mounting plate, and the connecting screw is passed through the mounting hole of the above-mentioned thermocouple assembly mounting plate and the through hole of the lever, and the thermocouple assembly mounting plate and the right end of the lever are connected as a whole, and the thermocouple fixing seat is fixed by screws On the surface of the thermocouple assembly mounting plate, there is a through hole that allows the thermocouple to pass through; the center distance between the left hinge shaft hole on the lever and the lever bracket shaft hole is smaller than the lever bracket shaft The distance from the hole to the through hole at the right end of the lever.

The invention has the advantages of high driving reliability, can meet the temperature measurement requirements of the rotor assembly with a large axial dimension, the installation position of the temperature measurement device is easy to adjust, and the installation position can be flexibly adjusted according to the test requirements.

Description of drawings

Fig. 1 is a structural schematic diagram of an existing thermocouple temperature measuring device.

Fig. 2 is a structural schematic diagram of the present invention.

Detailed ways

The present invention will be described in further detail below. Referring to Fig. 2, the temperature measuring device for the rotation test of the rotor part of the aero-engine includes a base plate 1, a lever bracket 8 and a thermocouple assembly. The lever bracket shaft hole of the lever bracket has a lever shaft 9 in the lever bracket shaft hole.

The thermocouple assembly consists of a thermocouple holder 13, a set screw 14 and a thermocouple 15. The thermocouple 15 is passed through the thermocouple mounting hole of the thermocouple holder 13, and the set screw 14 locks the thermocouple 15.

It is characterized in that there is a single-arm lever mechanism composed of an electromagnet drive mechanism, a connecting rod hinge shaft 6, a lever 7, a thermocouple assembly mounting plate 11 and a connecting screw 12. There is a horizontal lever shaft hole in the middle part of the lever 7, and the lever shaft hole is sleeved on the lever shaft 9, so that the lever 7 and the lever bracket 8 are hingedly connected. A plurality of lever shaft holes are provided on the lever 7 to facilitate the adjustment of the proportional relationship of the lever.

The electromagnet driving mechanism is composed of an electromagnet mounting base 2, an electromagnet 4 and a connecting rod 5. The electromagnet mounting base 2 is fixed on the bottom plate 1 through the mounting base fixing screw 3 and is located on the left side of the lever bracket 8. The electromagnet 4 is fixed on the electromagnetic On the iron mount 2, the lower end of the connecting rod 5 is connected with the upper end of the electromagnet 4 moving iron cores. The use of electromagnet driving mechanism greatly improves the driving reliability in vacuum environment. When the moving iron core of the electromagnet 4 stretched out upwards, the right end of the lever 7 descended; when the moving iron core of the electromagnet 4 retracted downward, the right end of the lever 7 rose.

There is a horizontal waist-shaped left hinge shaft hole at the left end of the lever 7, and a horizontal connecting rod shaft hole is arranged at the upper end of the connecting rod 5, and the connecting rod hinge shaft 6 passes through the above-mentioned connecting rod shaft hole and the left hinge shaft hole, and the connecting rod The upper end of 5 forms hinge connection with the left end of lever 7.

There is a vertical through hole at the right end of the lever 7, and there is a mounting hole on the left side of the thermocouple assembly mounting plate 11. The connecting screw 12 passes through the mounting hole of the above-mentioned thermocouple assembly mounting plate 11 and the through hole of the lever 7, and the thermocouple The right end of the assembly mounting plate 11 and the lever 7 is connected as a whole, and the thermocouple holder 13 is fixed on the surface of the thermocouple assembly mounting plate 11 by screws. through the hole.

The center distance between the left hinge shaft hole on the lever 7 and the lever bracket shaft hole is less than the distance from the lever bracket shaft hole to the through hole at the right end of the lever 7 .

The working principle of the present invention is: the single-arm lever temperature measuring mechanism driven by the electromagnet is used to replace the double-arm lever temperature measuring mechanism driven by the cylinder, so that the measurement reliability is greatly improved; the electromagnet driving mechanism is small in size, easy to install, and can be installed on the The location where the temperature field needs to be measured meets the needs of temperature measurement in complex temperature fields. At the same time, since the range of movement of the single-arm lever is not limited, it meets the needs of temperature measurement of engine rotor parts with large axial dimensions.

In one embodiment of the present invention, the electromagnet 4 is a finished product.

Claims (1)

1. rotatory test temperature measuring equipment of aircraft engine rotor part, comprise base plate [1], lever dolly [8] and thermocouple assembly, the base of lever dolly [8] is fixed on the base plate [1] by lever dolly gib screw [10], the lever dolly axis hole that level is arranged on lever dolly [8], lever shaft [9] is arranged in this lever dolly axis hole, thermocouple assembly is made up of thermopair holder [13], holding screw [14] and thermopair [15], thermopair [15] is through in the thermopair mounting hole of thermopair holder [13], by holding screw [14] thermopair [15] is locked; It is characterized in that a single-arm lever mechanism that is made up of solenoid actuated mechanism, connecting rod link axle [6], lever [7], thermocouple assembly installing plate [11] and attachment screw [12] is arranged; The lever axis hole that level is arranged at the middle part of lever [7], this lever shaft borehole jack make lever [7] and lever dolly [8] form hinge and are connected on lever shaft [9]; Solenoid actuated mechanism is by electromagnet mount pad [2], electromagnet [4] and connecting rod [5] are formed, electromagnet mount pad [2] is fixed on the base plate [1] by mount pad gib screw [3], be positioned at the left side of lever dolly [8], electromagnet [4] is fixed on the electromagnet mount pad [2], the lower end of connecting rod [5] is connected with the upper end of the moving iron core of electromagnet [4], the waist shape left side hinge shaft hole that level is arranged at the left end of lever [7], there is the connecting rod axis hole of level the upper end of connecting rod [5], connecting rod link axle [6] is through in above-mentioned connecting rod axis hole and the left hinge shaft hole, the upper end of connecting rod [5] is connected with the left end formation hinge of lever [7], right-hand member at lever [7] has vertical through hole, there is mounting hole on the plate face left side of thermocouple assembly installing plate [11], attachment screw [12] is through in the through hole of above-mentioned thermocouple assembly installing plate [11] mounting hole and lever [7], the right-hand member of thermocouple assembly installing plate [11] and lever [7] is connected to integral body, thermopair holder [13] on the plate face of thermocouple assembly installing plate [11], has the hole of passing that permission thermopair [15] passes by screw retention on the plate face of thermocouple assembly installing plate [11]; Lever [7] is gone up the centre distance of left hinge shaft hole and lever dolly axis hole less than the distance of lever dolly axis hole to lever [7] right-hand member through hole.

Images