Turbojet engine test bed

Abstract

The utility model discloses a turbojet engine test bed, which belongs to the technical field of turbojet engine test experiments and comprises a fixed seat, a movable plate slidably connected to the top of the fixed seat, a thrust sensor arranged between the movable plate and the fixed seat, supports connected to two sides of the movable plate, and an adjusting block connected to the top of each support through a first bolt. A strip-shaped hole is formed in the adjusting block, and a first bolt penetrates through the strip-shaped hole to fasten the adjusting block and the top end of the support. The tops of the adjusting blocks are connected with pressing blocks through bolts; the hoops comprise the upper hoops and the lower hoops, the multiple sets of hoops are arranged according to the size of the turbine engine, the upper hoops and the lower hoops are connected between the pressing block and the adjusting block in a fastened mode and used for holding and fixing the turbojet engine, and the tops of the upper hoops are connected with vibration collectors; the thrust sensor and the vibration collector are connected with an external processor through data lines. The device is small and portable in structure, easy and convenient to apply, wide in application range and suitable for turbojet engines of various specifications.

Description

TECHNICAL FIELD

[0001] The utility model belongs to turbojet engine test experimental technical field, especially relates to a turbojet engine test bench. BACKGROUND

[0002] Miniature turbojet engine test is very important in the link of aeroengine, and is also an indispensable link, and the accurate parameters of miniature turbojet engine are obtained through the test of multiple experimental data, and the further improvement of turbojet engine has very important significance.

[0003] At present, the small turbojet engine test bench is mostly simple support, and only some simple states such as whether starting is normal can be tested, the test bench does not have adjustability, the type of turbojet engine tested is relatively single, and only qualitative analysis can be carried out.

[0004] The Chinese patent with the authorized announcement number CN 216433530 U discloses a test bench for turbojet engine, which comprises a support frame and a cast iron flat plate, the upper surface of the support frame is provided with a guide rail, the guide rail is slidably connected with a sliding block arranged on the lower surface of the cast iron flat plate, the upper surface of the cast iron flat plate is slidably provided with an engine mounting plate, the engine mounting plate is slidably provided with an engine support plate, and the lower surface of the cast iron flat plate is provided with a test bench friction force balancing device and a measuring device on both sides. However, the test bench is complicated to assemble, the assembly process is complex, the measuring efficiency is reduced, the volume is large, the portability is poor, and only the thrust of the turbojet engine can be measured, so the measuring function is single.

[0005] Therefore, a turbojet engine test bench is provided. CONTENT OF THE UTILITY MODEL

[0006] To solve the above technical problems, the utility model provides a turbojet engine test bench.

[0007] To achieve the above purpose, the utility model provides a turbojet engine test bench, which comprises a fixed seat, the top of the fixed seat is slidably connected with a movable plate, a thrust sensor is arranged between the movable plate and the fixed seat, supports are connected on both sides of the movable plate, an adjusting block is connected on the top of the support through a first bolt, a strip-shaped hole is formed in the adjusting block, and the first bolt passes through the strip-shaped hole to fasten the adjusting block with the top end of the support;A pressing block is connected on the top of the adjusting block through a bolt;

[0008] The clamp comprises an upper clamp and a lower clamp, a plurality of groups are arranged according to the size of the turbine engine, the upper clamp and the lower clamp are fastened and connected between the pressing block and the adjusting block, are used for embracing and fixing the turbojet engine, and the top of the upper clamp is connected with a vibration collector;The thrust sensor and the vibration collector are connected with an external processor through data lines.

[0009] Preferably, the fixed seat and the opposite side of the movable plate are correspondingly provided with recesses, and sliding rails are embedded at the back sides of the recesses; the sliding rail comprises a track and a movable block, the track is fixedly connected with the fixed seat, and the movable block is fixedly connected with the movable plate, and the movable block is in sliding connection with the track.

[0010] Preferably, the push force sensor is also embedded in the recess, a blocking block is fixedly connected with the front end of the recess, one end of the push force sensor is in abutment with the blocking block, and the other end is fixedly connected with the front end of the movable block.

[0011] Preferably, first threaded holes are formed at both ends of the movable plate, the bracket is connected with the movable plate through second bolts, a gasket is arranged between the bracket and the movable plate, and the second bolts are in threaded connection with the first threaded holes through the bracket and the gasket.

[0012] Preferably, the upper clamp is integrally provided with a mounting block at the top, heat insulation holes are formed in the mounting block, and the vibration collector is connected with the top of the mounting block.

[0013] Preferably, a connecting head is fixedly connected with the bottom end of the vibration collector, a second threaded hole is formed in the top of the upper clamp, and the connecting head is in threaded connection with the second threaded hole.

[0014] Preferably, a plurality of heat dissipation holes are formed in the upper clamp and the lower clamp.

[0015] Preferably, mounting holes are formed in the two ends of the adjusting block corresponding to different turbojet engine connecting holes.

[0016] Compared with the prior art, the utility model has the advantages and technical effects as follows:

[0017] The thrust sensor arranged between the movable plate and the fixed seat can accurately collect the thrust data generated by the turbojet engine during operation. By arranging the sensor between the two, the engine thrust can be directly obtained, providing a key basis for evaluating the engine performance and helping technicians accurately master the thrust parameters of the engine and determine whether it meets the design standards. The upper clamp top integrates a vibration collector, which can synchronously collect vibration data during engine operation, assisting in analyzing the mechanical state and stability of the engine and providing multi-dimensional data support for optimized design. The clamp is designed with multiple upper and lower clamps, which can be flexibly replaced according to the diameters and sizes of different turbojet engines. The strip hole structure of the adjusting block can be freely moved in the strip hole through the bolt, changing the gap between the two adjusting blocks and realizing the stable fixation of different models of engines, significantly improving the versatility of the test bench. The overall structure is simple and compact, the combination of adjusting blocks and clamps reduces complex mechanical transmission components, reduces assembly difficulty, improves test efficiency, and is suitable for on-site rapid deployment and multi-scene application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application. The embodiments of the present application illustrated in the drawings and their descriptions are used to explain the present application and do not limit the present application. In the drawings:

[0019] Figure 1 A schematic diagram of a turbojet engine test bench structure of the present application;

[0020] Figure 2 A schematic diagram of a turbojet engine test bench upper structure of the present application;

[0021] Figure 3 A schematic diagram of a turbojet engine test bench lower structure of the present application;

[0022] Figure 4 A schematic diagram of a thrust sensor connection of the present application;

[0023] Figure 5 A schematic diagram of the groove shape of the movable plate in the present application.

[0024] In the drawings: 1, fixed seat; 2, movable plate; 3, thrust sensor; 4, bracket; 5, first bolt; 6, adjusting block; 7, strip hole; 8, pressing block; 9, upper clamp; 10, lower clamp; 11, vibration collector; 12, groove; 13, track; 14, movable block; 15, blocking block; 16, first threaded hole; 17, second bolt; 18, spacer; 19, mounting block; 20, heat insulation hole; 21, connecting head; 22, second threaded hole; 23, heat dissipation hole; 24, mounting hole. DETAILED DESCRIPTION

[0025] Clearly, the described embodiments are merely a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present utility model.

[0026] The following embodiments relate to a thrust sensor, which is a sensor for measuring the thrust or pressure on an object. The specific thrust sensor involved in the present embodiment is an S-shaped thrust sensor, and its working principle is based on the resistance strain principle. When external force acts on the elastic body of the S-shaped sensor, the elastic body deforms, and the resistance strain gauge pasted on its surface also deforms, resulting in a change in resistance value, which is then converted into an electrical signal output by the measurement circuit. It has the characteristics of small size, light weight and easy installation, and can be easily installed in various devices and structures, suitable for different installation space and location requirements. And the measurement range is wide, can measure the thrust or tension from small to large range, can select different range sensors according to actual needs. High precision, good linearity, repeatability and stability, can accurately measure the force, provide reliable data support for various applications.

[0027] The following embodiments also relate to a vibration collector, also known as a vibration data collector. It can collect, record and analyze the vibration data of equipment or structure, and can obtain acceleration, speed, displacement and other vibration parameters, providing data support for equipment fault diagnosis, condition monitoring and structure health assessment. It is usually composed of sensors, data acquisition circuit, storage module and control module. The sensor senses the vibration and converts it into an electrical signal, the data acquisition circuit converts the analog signal into a digital signal, the control module coordinates the work of each part, and the storage module saves the data. Its application fields are wide, in the industrial field, it is used for vibration monitoring of rotating machinery, reciprocating machinery and other equipment; in the field of aerospace, it is used for monitoring the vibration of aircraft structures and engine vibration; in civil engineering, it is used for evaluating the vibration of bridges, buildings and other structures under wind load, earthquake and other actions.

[0028] In order to make the above-mentioned purposes, features and advantages of the present utility model more obvious and easy to understand, the present utility model will be further described in detail in combination with the drawings and specific embodiments.

[0029] Reference Figures 1 to 5As shown, the embodiment provides a turbojet engine test bench, which comprises a fixed seat 1, a movable plate 2 connected to the top of the fixed seat 1, a thrust sensor 3 arranged between the movable plate 2 and the fixed seat 1, a support 4 connected to the two sides of the movable plate 2, an adjusting block 6 connected to the top of the support 4 through a first bolt 5, a strip-shaped hole 7 formed in the adjusting block 6, and a pressing block 8 connected to the top of the adjusting block 6 through a bolt.

[0030] The clamps, including upper clamps 9 and lower clamps 10, are arranged in several groups according to the size of the turbine engine, are tightly connected between the pressing block 8 and the adjusting block 6, are used for holding and fixing the turbojet engine, and the top of the upper clamp 9 is connected with a vibration collector 11.

[0031] The thrust sensor 3 arranged between the movable plate 2 and the fixed seat 1 can accurately collect the thrust data generated by the turbojet engine during operation. By arranging the sensor between the two, the engine thrust can be directly obtained, which provides a key basis for evaluating the engine performance and helps the technicians accurately master the thrust parameters of the engine and judge whether it meets the design standard. The vibration collector 11 integrated at the top of the upper clamp 9 can synchronously collect the vibration data of the engine during operation, which assists in analyzing the mechanical state and stability of the engine and provides multi-dimensional data support for optimizing the design. The clamps are designed with multiple upper clamps 9 and lower clamps 10, which can be flexibly replaced according to the diameter and size of different turbojet engines. The adjusting block 6 can be freely moved in the strip-shaped hole 7 through the bolt, the gap between the two adjusting blocks 6 is changed, the stable fixation of different models of engines is realized, and the universality of the test bench is significantly improved. The overall structure is simple and compact, the combination design of the adjusting block 6 and the clamp reduces the complex mechanical transmission components, reduces the assembly difficulty, improves the test efficiency, and is suitable for on-site rapid deployment and multi-scene application.

[0032] Further, the fixed plate is designed with fixed hole positions at four corners, which can be fixed by bolts or foundation screws according to the scene, and the portability and installation stability are considered.

[0033] Further optimization scheme, the opposite side of the fixed seat 1 and the movable plate 2 is correspondingly provided with a recess 12, and a slide rail is embedded at the rear side of the recess 12; the slide rail comprises a track 13 and a movable block 14, the track 13 is fixedly connected with the fixed seat 1, the movable block 14 is fixedly connected with the movable plate 2, and the movable block 14 is slidably connected with the track 13.

[0034] The fixed seat 1 and the movable plate 2 of the test bench are connected through the sliding rail structure track 13 and the movable block 14 embedded in the groove 12, which not only ensures the stability and accuracy of the movable plate 2 during adjustment, but also effectively protects the sliding rail from external interference through the groove 12 design, improves the reliability of the equipment; the low-friction sliding characteristics of the sliding rail not only reduce the operation difficulty, but also prolong the mechanical life, enhance the dynamic support capacity and application range of the test bench, and provide a stable and easy-to-maintain mechanical foundation for turbojet engine testing.

[0035] Further optimization scheme, the thrust sensor 3 is also embedded in the groove 12, the front end of the groove 12 is fixedly connected with the blocking block 15, one end of the thrust sensor 3 abuts against the blocking block 15, and the other end is fixedly connected with the front end of the movable block 14.

[0036] The thrust sensor 3 is embedded in the groove 12 of the fixed seat 1 and the movable plate 2, and is fixedly connected with the movable block 14 through the front blocking block 15, which not only realizes the concealed protection of the sensor to avoid external interference, but also ensures the directness of the thrust transmission path, significantly improves the measurement accuracy; combined with the compact groove 12 layout, further optimize the space utilization, provide a mechanical support with protection and accuracy for reliable collection of thrust data.

[0037] Further optimization scheme, the first threaded hole 16 is formed at both ends of the movable plate 2, the bracket 4 is connected with the movable plate 2 through the second bolt 17, the pad 18 is arranged between the bracket 4 and the movable plate 2, and the second bolt 17 is threadedly connected in the first threaded hole 16 by penetrating the bracket 4 and the pad 18.

[0038] By opening the first threaded hole 16 at both ends of the movable plate 2, and connecting and fixing the bracket 4 and the pad 18 by using the second bolt 17, the width of the bracket 4 is flexibly adjusted, and the size range of the turbojet engine that can be tested is increased; the combination design of threaded hole and bolt facilitates quick disassembly and adjustment, significantly improves the maintainability and adaptability of the test bench, and provides a mechanical support with flexibility and reliability for testing of multiple models of engines.

[0039] Further optimization scheme, the mounting block 19 is integrally formed at the top of the upper clamp 9, the heat insulation hole 20 is formed in the mounting block 19, and the vibration collector 11 is connected to the top of the mounting block 19.

[0040] The heat insulation hole 20 effectively blocks the influence of high temperature of the engine on the sensor, ensuring the accuracy of vibration data collection and the reliability of the equipment.

[0041] Further optimization scheme, the connecting head 21 is fixedly connected to the bottom end of the vibration collector 11, the second threaded hole 22 is formed in the top of the upper clamp 9, and the connecting head 21 is threadedly connected in the second threaded hole 22.

[0042] The vibration sensor is quickly installed and stably fixed by directly screwing the connecting head 21 at the bottom end of the vibration collector 11 into the second threaded hole 22 at the top of the upper clamp 9, the vibration collector 11 and the clamp of different sizes can be conveniently installed and dismounted, the installation and dismounting can be completed without additional tools, and the test efficiency is remarkably improved; the high-precision cooperation of the threaded connection ensures the rigid connection of the vibration collector 11 and the clamp, effectively transmits the engine vibration signal, and avoids data deviation caused by looseness.

[0043] Further optimization scheme, the upper clamp 9 and the lower clamp 10 are provided with a plurality of heat dissipation holes 23.

[0044] The heat dissipation holes 23 are arranged on the upper clamp 9 and the lower clamp 10, heat generated during engine operation can be effectively dissipated, the fastening stability of the clamp is not affected due to high-temperature deformation; the heat dissipation holes 23 can reduce the temperature of the clamp body, prolong the service life, reduce heat conduction to the surrounding components such as the vibration collector 11, ensure the performance reliability of the sensor in a high-temperature environment, and guarantee the accuracy of test data and the safety of equipment operation.

[0045] Further optimization scheme, the adjusting block 6 is provided with mounting holes 24 at both ends corresponding to different turbojet engine connecting holes.

[0046] When vibration test is not needed, the adjusting block 6 can be directly connected with the fixing holes on both sides of the turbojet engine through the mounting holes 24, the installation process of the thrust test component is simplified, the test speed and efficiency are improved, the stability and reliability of the structure are ensured, and an efficient and convenient installation solution for turbojet engine test is provided.

[0047] The utility model does not exhaust the place for the person skilled in the art is the conventional technical means.

[0048] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model, and does not indicate or imply that the indicated device or element must have a particular orientation, structure and operation, therefore, it cannot be understood as a limitation on the utility model.

[0049] The above-described embodiments are only preferred modes of the utility model, and do not limit the scope of the utility model, and various deformations and improvements of the technical solutions of the utility model made by those skilled in the art without departing from the design spirit of the utility model should fall within the protection scope of the utility model claim.

Claims

1. A turbojet engine test bench, characterized in that, The utility model relates to a turbine engine test bench, including: The fixed seat (1) top sliding connection has movable board (2), be provided with push sensor (3) between movable board (2) and fixed seat (1), movable board (2) both sides are connected with support (4), the top of support (4) is connected with the adjusting block (6) through first bolt (5), and the strip hole (7) is formed in adjusting block (6), and first bolt (5) passes through strip hole (7) and fastens the top of support (4) with adjusting block (6);The top of adjusting block (6) is connected with pressure block (8) through bolt; The utility model relates to a turbine engine test bench, including:

2. The turbojet engine test bench of claim 1, wherein: The fixed seat (1) and movable board (2) opposite side are all corresponded and are formed with recess (12), and the rear side of recess (12) is embedded with slide rail;The slide rail includes track (13) and movable block (14), track (13) is fixedly connected with fixed seat (1), and movable block (14) is fixedly connected with movable board (2), and movable block (14) is slidably connected with track (13).

3. The turbojet engine test bench of claim 2, wherein: The push sensor (3) is also embedded in the recess (12), and the front end of the recess (12) is fixedly connected with the blocking block (15), one end of the push sensor (3) abuts against the blocking block (15), and the other end is fixedly connected with the front end of the movable block (14).

4. The turbojet engine test stand of claim 1, wherein: The movable board (2) both ends are provided with first threaded hole (16), the support (4) is connected with the movable board (2) through the second bolt (17), and the gasket (18) is arranged between the support (4) and the movable board (2), and the second bolt (17) is screwed in the first threaded hole (16) and is connected with the support (4) and the gasket (18).

5. The turbojet engine test stand of claim 1, wherein: The top of the upper clamp (9) is integrally formed with a mounting block (19), the mounting block (19) is provided with a heat insulation hole (20), and the vibration collector (11) is connected to the top of the mounting block (19).

6. The turbojet engine test stand of claim 1, wherein: The bottom end of the vibration collector (11) is fixedly connected with a connector (21), the top of the upper clamp (9) is provided with a second threaded hole (22), and the connector (21) is screwed into the second threaded hole (22).

7. The turbojet engine test stand of claim 1, wherein: The upper clamp (9) and the lower clamp (10) are provided with a plurality of heat dissipation holes (23).

8. The turbojet engine test stand of claim 1, wherein: The adjusting block (6) both ends correspond to different jet engine connecting hole and are provided with mounting hole (24).

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