Ground test power device measuring and checking system and method thereof

Abstract

The invention relates to a ground test power device measuring and checking system and method, and the system comprises a rigid support, a thrust loading device, and a data collector. The rigid bracket is fixed on the ground; the thrust loading device comprises a connecting bracket, a thrust testing shaft, a force sensor and a chain block; the connecting bracket is connected to the periphery of the power device; one ends of the two thrust test shafts are connected to the connecting bracket, and the thrust test shafts are symmetrically distributed on the two sides of the power device; the two force sensors are connected to one ends, opposite to the connecting bracket, of the two thrust test shafts; the two chain blocks are connected between the two force sensors and the connecting bracket; the data acquisition unit is connected with the two force sensors and the strain gauge, the strain gauge is additionally arranged on a main thrust pin of the power device, and the main thrust pin is arranged in a main mounting section of the test bed; the data collector can collect the tension value monitored by the force sensor and the strain value of the strain gauge.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of aviation technology, and particularly relates to a ground test power device measurement and checking system and a method thereof. BACKGROUND

[0002] In the dynamic combined work ground test of the propulsion system, the overall thrust of the power device engine needs to be tested. During the test, the power device is fixed in the main mounting joint of the test bench through the thrust pin. At present, for thrust measurement, a strain gauge is usually installed on the main thrust pin, and the power device thrust is obtained by using the relationship between the strain value and the axial force.

[0003] The method of installing a strain gauge on the main thrust pin to measure the power device thrust needs to carry out the checking of the relationship between the strain value and the axial force in the laboratory first. However, after the main thrust pin is installed into the main mounting joint, the environment of the strain gauge changes, resulting in a large difference between the measured power device thrust and the actual power device thrust.

[0004] The present application is proposed in view of the above technical defects. SUMMARY

[0005] The purpose of the present application is to provide a ground test power device measurement and checking system and a method thereof. A set of thrust loading devices is installed on the real power device installation structure to simulate different thrusts on the power device, the corresponding relationship between the strain value of the strain gauge and the power device thrust is obtained, the online checking of the strain value of the strain gauge and the power device thrust is realized, and the implementation of the test is supported.

[0006] The technical solution of the present application is:

[0007] A ground test power device measurement and checking system, comprising a rigid support, a thrust loading device and a data collector.

[0008] The rigid support is fixed on the ground.

[0009] The thrust loading device comprises a connecting support, a thrust test shaft, a force sensor and a hand-operated hoist.

[0010] The connecting support is connected to the outer periphery of the power device.

[0011] The thrust test shaft has two ends, one end of which is connected to the connecting support and symmetrically distributed on both sides of the power device.

[0012] The force sensor has two ends, one end of which is connected to the connecting support.

[0013] The hand-operated hoist has two ends, one end of which is connected between the two force sensors and the connecting support.

[0014] The data collector is connected with two force sensors and strain gauges which are installed on the main thrust pin of the power device and in the main mounting joint of the test bench.

[0015] The data collector can collect the tension value monitored by the force sensor and the strain value of the strain gauge.

[0016] According to at least one embodiment of the present application, the rigid support is connected with the ground by chemical bolts in the ground test power device measurement calibration system.

[0017] According to at least one embodiment of the present application, the rigid support adopts a truss structure in the ground test power device measurement calibration system.

[0018] According to at least one embodiment of the present application, the strength of the rigid support is not less than 5 times the maximum thrust applied to the power device in the ground test power device measurement calibration system.

[0019] According to at least one embodiment of the present application, the connecting support is fastened to the outer periphery of the power device by a U-shaped ring, and the connecting part is located in the section where the center of gravity of the power device is located in the ground test power device measurement calibration system.

[0020] According to at least one embodiment of the present application, the thrust test shaft and the connecting support are made of stainless steel and are welded together in the ground test power device measurement calibration system.

[0021] According to at least one embodiment of the present application, the force sensor is bolted to the thrust test shaft in the ground test power device measurement calibration system.

[0022] According to at least one embodiment of the present application, the hook is connected between the hoist and the force sensor in the ground test power device measurement calibration system.

[0023] A ground test power device measurement calibration method based on the ground test power device measurement calibration system of claim 8, characterized in that when calibration is performed:

[0024] The two hoists are tightened to apply thrust to the power device, and when the tension value monitored by the force sensor is stable, the strain value of the strain gauge is recorded.

[0025] The thrust applied to the power device by the two hoists is changed, and the corresponding strain value of the strain gauge is recorded.

[0026] The tensile force value monitored by the force sensor is used as the thrust of the power unit to obtain the corresponding relationship between the strain value of the strain gauge and the thrust of the power unit.

[0027] According to at least one embodiment of this application, in the above-described ground test power device measurement and verification method, before verification:

[0028] To perform zero-tension calibration, tighten both chain hoists. When the tension value monitored by the force sensor reaches the critical point of zero tension, perform zero-position calibration on the data acquisition device using the tension value monitored by the force sensor and the strain value of the strain gauge.

[0029] This application has at least the following beneficial technical effects:

[0030] A measurement and verification system and method for ground-based test power units are provided. By adding a thrust loading device to the actual power unit installation structure, different thrusts are simulated to the power unit, and the correspondence between strain gauge strain values ​​and power unit thrust is obtained, so as to realize online verification of strain gauge strain values ​​and power unit thrust to support the implementation of the test. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the ground test power device measurement and verification system provided in the embodiments of this application;

[0032] in:

[0033] 1-Main thrust pin; 2-Strain gauge; 3-Thrust loading device; 4-Data acquisition unit; 5-Rigid support;

[0034] 31-Connecting bracket; 32-Thrust test shaft; 33-Force sensor; 34-Hand chain hoist.

[0035] To better illustrate this embodiment, some content in the accompanying drawings may be omitted, enlarged, or reduced. They are for illustrative purposes only and should not be construed as limiting the scope of this application. Detailed Implementation

[0036] To make the technical solution and advantages of this application clearer, the technical solution of this application will be described in a clearer and more complete manner below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of this application, and are only used to explain this application, not to limit this application. It should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings, and other related parts can be referred to the general design.

[0037] In addition, unless otherwise defined, technical terms or scientific terms used in the description of the present application shall be understood as having the common meaning to those of ordinary skill in the art to which the present application belongs. The term "comprising" used in the description of the present application indicates that the concept appearing before the word encompasses the concept listed after the word and its equivalents, without excluding other associated concepts.

[0038] In addition, the words indicating the orientation used in the description of the present application are only used to indicate the relative direction or positional relationship, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly. It should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting" and the like used in the description of the present application should be understood in a broad sense, for example, the connection can be fixed connection or detachable connection; can be mechanical connection or electrical connection; can be directly connected or indirectly connected through intermediate medium, and those skilled in the art can understand the specific meaning of the present application according to the specific circumstances.

[0039] A ground test power device measurement and calibration system, as shown in Figure 1 It comprises a rigid support 5, a thrust loading device 3 and a data collector 4.

[0040] The rigid support 5 is fixed to the ground, which can be designed to be connected with the ground by chemical bolts.

[0041] The rigid support 5 is used to provide reliable support to the thrust loading device 3, and then to apply thrust to the power device.

[0042] The rigid support 5 adopts a truss structure, and the strength of the rigid support 5 is not less than 5 times the maximum thrust applied to the power device.

[0043] The thrust loading device 3 is arranged parallel to the center axis of the power device, which is used to ensure the accuracy of the thrust applied to the power device.

[0044] The thrust loading device 3 comprises a connecting support 31, a thrust test shaft 32, a force sensor 33 and a hand-operated hoist 34.

[0045] The connecting support 31 is connected to the outer periphery of the power device, which can be fastened to the outer periphery of the power device by a U-shaped ring, and the connecting part is located in the section where the center of gravity of the power device is located.

[0046] The thrust test shaft 32 has two ends, one end is connected to the connecting support 31, and the other end is symmetrically distributed on both sides of the power device.

[0047] The thrust test shaft 32 and the connecting support 31 are made of stainless steel material and are welded to avoid deformation inside the thrust loading device 3 and ensure the stability of the thrust applied to the power device.

[0048] The force sensor 33 has two, connected in two thrust test shaft 32 back to the end of the connecting bracket 31, can be used bolted to the thrust test shaft 32.

[0049] The hand chain block 34 has two, connected between the two force sensor 33 and the connecting bracket 31. The hand chain block 34 and the force sensor 33 can be connected by hook.

[0050] The force sensor 33 can be conveniently disassembled on the thrust test shaft 32 and the hand chain block 34.

[0051] The data collector 4 is connected to two force sensors 33, and to strain gauges 2, which are installed on the main thrust pin 1 of the power device, which is installed in the main mounting section of the test bench.

[0052] The data collector 4 can collect the tension value monitored by the force sensor 33 and the strain value of the strain gauge 2.

[0053] Based on the ground test power device measurement calibration system disclosed in the above embodiment, the relationship between the strain value of the strain gauge and the thrust of the power device can be calibrated by the following method:

[0054] Before calibration:

[0055] 0 tension calibration is carried out, two hand chain blocks 34 are tightened, and when the tension value monitored by the force sensor 33 is at the critical point of 0 tension, the tension value monitored by the force sensor 33 and the strain value of the strain gauge 2 are calibrated to zero.

[0056] During calibration:

[0057] The two hand chain blocks 34 are tightened to apply thrust to the power device, and when the tension value monitored by the force sensor 33 is stable, the strain value of the strain gauge 2 is recorded.

[0058] The thrust applied by the two hand chain blocks 34 to the power device is changed, and the corresponding strain value of the strain gauge 2 is recorded.

[0059] The tension value monitored by the force sensor 33 is taken as the thrust of the power device, and the corresponding relationship between the strain value of the strain gauge 2 and the thrust of the power device is obtained, and the calibration is completed.

[0060] The ground test power device measurement calibration system disclosed in the above embodiment has a simple structure, can realize online simulation of the thrust of the power device through the thrust loading device 3, can complete online calibration of the corresponding strain value of the strain gauge and the thrust of the power device without moving the power device, has low cost, and can support accurate measurement of the thrust of the power device.

[0061] The technical scheme of the present application has been described in combination with the preferred embodiments shown in the drawings, and it should be understood by those skilled in the art that the protection scope of the present application is obviously not limited to these specific embodiments, and those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the present application, and the technical schemes after the changes or replacements will fall within the protection scope of the present application.

Claims

1. A ground test power plant measurement verification system, comprising: It comprises a rigid support (5), a thrust loading device (3), and a data collector (4); The rigid support (5) is fixed on the ground; The thrust loading device (3) comprises a connecting support (31), thrust test shafts (32), force sensors (33), and hand-operated hoists (34); The connecting support (31) is connected to the outer periphery of the power device; The thrust test shafts (32) are two in number, one end of which is connected to the connecting support (31) and symmetrically distributed on both sides of the power device; The force sensors (33) are two in number, which are connected to one end of the two thrust test shafts (32) away from the connecting support (31); The hand-operated hoists (34) are two in number, which are connected between the two force sensors (33) and the connecting support (31); The data collector (4) is connected to the two force sensors (33) and the strain gauge (2), which is additionally installed on the main thrust pin (1) of the power device installed in the main mounting section of the test bench; The data collector (4) can collect the tension value monitored by the force sensor (33) and the strain value of the strain gauge (2).

2. The ground test power plant measurement verification system of claim 1, wherein, The rigid support (5) is connected to the ground by chemical bolts.

3. The ground test power plant measurement verification system of claim 2, wherein, The rigid support (5) adopts a truss structure.

4. The ground test power plant measurement verification system of claim 3, wherein, The strength of the rigid support (5) is not less than 5 times the maximum thrust applied to the power device.

5. The ground test power plant measurement verification system of claim 4, wherein, The connecting support (31) is fastened to the outer periphery of the power device in the form of a U-shaped ring, and the connecting part is located in the section where the center of gravity of the power device is located.

6. The ground test power plant measurement verification system of claim 5, wherein, The thrust test shafts (32) and the connecting support (31) are made of stainless steel and are welded together.

7. The ground test power plant measurement verification system of claim 6, wherein, The force sensors (33) are bolted to the thrust test shafts (32).

8. The ground test power plant measurement verification system of claim 7, wherein, The hand-operated hoists (34) and the force sensors (33) are connected by hooks.

9. A method of ground test power plant measurement verification, implemented on the ground test power plant measurement verification system of claim 8, characterized in that, When checking: By tightening the two hand-operated hoists (34) to apply thrust to the power device, when the tension value monitored by the force sensor (33) is stable, the strain value of the strain gauge (2) is recorded; Change the thrust applied to the power device by the two hand-operated hoists (34), and record the corresponding strain value of the strain gauge (2); Take the tension value monitored by the force sensor (33) as the thrust of the power device to obtain the corresponding relationship between the strain value of the strain gauge (2) and the thrust of the power device.

10. The method of ground test power plant measurement verification of claim 9, wherein, Before checking: 0-tension calibration is carried out, the two hand-operated hoists (34) are tightened, and when the tension value monitored by the force sensor (33) is 0-tension, the tension value monitored by the force sensor (33) and the strain value of the strain gauge (2) are zero-position calibrated on the data collector (4).

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