Comprehensive test bed for turbojet engine
By designing a comprehensive test bench for turbojet engines connected with fasteners, the problems of cumbersome and high cost in traditional test benches are solved, and higher working efficiency and lower testing costs are achieved.
Patent Information
- Application Number
- CN202421835716.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-31
AI Technical Summary
The traditional turbojet engine test bench is cumbersome to operate, has high cost and is difficult to maintain, and cannot effectively reduce the testing cost and operation difficulty of 10-300KG class turbofan engines.
A comprehensive test bench for turbojet engines is designed, using fasteners connections, including a platform, guide seat, guide shaft, guide bearing and S-type tension sensor, through which the stable installation and measurement of the engine are achieved.
It realizes the convenience of operation and disassembly, reduces testing costs and operation difficulty, improves working efficiency, and determines the thrust parameters of the engine in different working environments.
Smart Images
Figure CN222866226U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of engine test devices, in particular to a turbojet engine comprehensive test bench. Background Art
[0002] During the ground test of the turbojet engine as a whole, the engine operating parameters are checked through the test run to ensure that they reach the specified values, and the actual levels of the main performance parameters under the design state are examined; the engine starting reliability and acceleration and deceleration stability are checked, and the working conditions of various engine components when operating at medium speeds are examined, and faults are eliminated to ensure that the engine reaches the design state.
[0003] Traditional turbojet engine test benches can only achieve partial automation functions. Moreover, these semi-automatic equipment are relatively expensive, cumbersome to operate and inconvenient to use. Or experiments are conducted on the entire aircraft, and long-term use will also cause damage to the flight control, radio, steering gear, electronic and other components in the aircraft. In addition, the cost and difficulty of daily maintenance are high, the operation is cumbersome, and the installation and removal of the engine are troublesome. Utility Model Content
[0004] Based on the above deficiencies in the prior art, the technical problem solved by the utility model is to provide a comprehensive test bench for a turbojet engine, which is easy to operate and disassemble, reduces the test cost and operating difficulty of 10-300KG turbofan engines, achieves higher work efficiency, and can determine the thrust parameters of the engine under different working environments.
[0005] In order to solve the above technical problems, the utility model is achieved through the following technical solutions: the utility model provides a turbojet engine comprehensive test bench, including a platform, a guide seat fixed on the platform, a guide shaft fixed between the guide seats, and a guide bearing slidably connected to the guide shaft; the top of the guide bearing is fixedly connected to the engine mounting platform, an S-shaped tension sensor is provided between the platform and the engine mounting platform, and the two ends of the S-shaped tension sensor are respectively connected to a first tension sensor mounting seat and a second tension sensor mounting seat, the first tension sensor mounting seat is fixed to the bottom of the engine mounting platform, and the second tension sensor mounting seat is fixed to the top of the platform; an engine support for fixing the turbojet engine is installed on the top of the engine mounting platform, and an exhaust guide cylinder corresponding to the tail of the turbojet engine is installed on the platform.
[0006] Furthermore, the exhaust gas guide tube is clamped by an exhaust gas guide tube clamp, and the exhaust gas guide tube clamp is fastened to the platform through an exhaust gas guide tube clamp support.
[0007] Furthermore, the exhaust gas guide tube clamp support is welded by a steel plate and a support rod, and the support rod is vertically arranged in the middle of the steel plate; the support rod is fixedly connected to the exhaust gas guide tube clamp; the four corners of the steel plate are provided with a first exhaust gas guide tube clamp support fixing hole, and the platform is provided with a second exhaust gas guide tube clamp support fixing hole, the first exhaust gas guide tube clamp support fixing hole is aligned with the second exhaust gas guide tube clamp support fixing hole, and the exhaust gas guide tube clamp support is fastened to the platform with an M10×20 cylindrical head hexagon socket bolt.
[0008] Preferably, a first guide seat fixing hole is provided on the guide seat, a second guide seat fixing hole is provided on the platform, the first guide seat fixing hole is aligned with the second guide seat fixing hole on the platform, and the guide seat is fixed to the platform with an M6×20 cylindrical head hexagon socket bolt.
[0009] Optionally, a first guide bearing fixing hole is provided on the guide bearing, and a second guide bearing fixing hole is provided on the engine mounting platform. The first guide bearing fixing hole is aligned with the second guide bearing fixing hole, and the guide bearing is fixed to the engine mounting platform with an M6×25 cylindrical head hexagon socket bolt.
[0010] Furthermore, the guide seat has a reserved hole for the guide shaft, and both ends of the guide shaft are respectively inserted into the reserved holes for the guide shaft of the guide seat, and the reserved holes of the guide seat are locked with M6×25 cylindrical head hexagon socket bolts to fix the guide shaft.
[0011] Preferably, a first tension sensor mounting base fixing hole is provided on the first tension sensor mounting base, a second tension sensor mounting base fixing hole is provided on the engine mounting platform, the first tension sensor mounting base fixing hole is aligned with the second tension sensor mounting base fixing hole, and the first tension sensor mounting base is fixed to the engine mounting platform with an M6×12 cylindrical head hexagon socket bolt; a third tension sensor mounting base fixing hole is provided on the platform, the fixing hole on the second tension sensor mounting base is aligned with the third tension sensor mounting base fixing hole, and the second tension sensor mounting base is fixed to the platform with two M6×12 cylindrical head hexagon socket bolts.
[0012] From the above, the turbojet engine comprehensive test bench of the utility model has at least the following beneficial effects:
[0013] 1. The utility model adopts fasteners for connection, which is safe, stable, reliable and low-cost. It is suitable for a variety of small turbojet engines. The test data of the standard engine transfer test calibration test is basically consistent with the engine performance data.
[0014] 2. The utility model can reduce the testing cost and operating difficulty of 10-300KG turbofan engines, thereby achieving higher work efficiency, and by controlling its air quality and flow rate, it can determine the thrust and other parameters of the engine under different working environments.
[0015] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the invention more obvious and easy to understand, the following is a detailed description in combination with the preferred embodiments and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings of the embodiment will be briefly introduced below.
[0017] Figure 1 It is a structural schematic diagram of a turbojet engine comprehensive test bench of the utility model;
[0018] Figure 2 This is a schematic diagram of the structure of the exhaust guide tube and the guide bearing of the utility model installed on the platform;
[0019] Figure 3 It is a structural schematic diagram of the platform of the utility model.
[0020] In the figure: 1-exhaust guide tube, 2, 3-exhaust guide tube clamp, 4-exhaust guide tube clamp support, 5, 6-engine support, 7-engine mounting platform, 8, 9-guide shaft, 10, 11, 12, 13-guide seat, 14, 15, 16, 17-guide bearing, 18-first tension sensor mounting seat, 19-second tension sensor mounting seat, 20-S-type tension sensor, 21-platform, 22-table, 23, 26, 24, 25-second guide seat fixing hole, 27-third tension sensor mounting seat fixing hole , 28-second exhaust guide tube clamp support fixing hole, 31-first exhaust guide tube clamp support fixing hole, 29, 30-exhaust guide tube clamp fixing holes, 33, 32, 34, 35-second guide bearing fixing holes, 37, 36, 38, 39-first guide bearing fixing holes, 40, 41, 42, 43-first guide seat fixing holes, 44-first S-type tension sensor fixing hole, 45-first tension sensor mounting seat fixing hole, 46-second tension sensor mounting seat fixing hole, 47-second S-type tension sensor fixing hole. DETAILED DESCRIPTION
[0021] The following is a detailed description of the specific implementation of the utility model in conjunction with the accompanying drawings, which is a part of this specification and illustrates the principle of the invention through examples. Other aspects, features and advantages of the utility model will become clear through this detailed description. In the referenced drawings, the same or similar parts in different figures are represented by the same reference numerals.
[0022] like Figures 1 to 3 As shown, the turbojet engine comprehensive test bench of the utility model includes a platform 21, guide seats 10, 11, 12, 13 fixed on the platform 21, guide shafts 8, 9 fixed between the guide seats 10, 11, 12, 13, and guide bearings 14, 15, 16, 17 slidably connected to the guide shafts 8, 9.
[0023] The platform 21 is supported by the table body 22, which is formed by welding rods. The platform 21 and the table body 22 are fixed with Ф5×18 round head blind rivets. Align the first guide seat fixing holes 40, 41, 42, 43 on the guide seats 10, 11, 12, 13 with the second guide seat fixing holes 23, 26, 24, 25 on the platform 21 respectively, and fix the guide seats 10, 11, 12, 13 on the platform 21 with M6×20 cylindrical head hexagon socket bolts, with the nuts located at the bottom (note: tightening torque 19N.m). Insert the guide bearings 14, 17 and 15, 16 into the guide shafts 8, 9 respectively, then insert the two ends of the guide shafts 8, 9 into the reserved holes of the guide shafts above the guide seats 10, 12, 11, 13 respectively, then use M6×25 cylindrical head hexagon socket bolts to lock the reserved holes above the guide seats 10, 12, 11, 13 to fix the guide shafts 8, 9, slide the guide bearings 14, 15, 16, 17 respectively, align the first guide bearing fixing holes 37, 36, 38, 39 on the guide bearings 14, 15, 16, 17 with the second guide bearing fixing holes 33, 32, 34, 35 on the engine mounting platform 7 respectively, then use 4 M6×25 cylindrical head hexagon socket bolts to fix the guide bearings 14, 15, 16, 17 on the engine mounting platform 7 (note: tightening torque 21N.m).
[0024] The tops of the guide bearings 14, 15, 16, and 17 are fixedly connected to the engine mounting platform 7. An S-shaped tension sensor 20 is provided between the platform 21 and the engine mounting platform 7. Both ends of the S-shaped tension sensor 20 are respectively connected to a first tension sensor mounting seat 18 and a second tension sensor mounting seat 19. The first tension sensor mounting seat 18 is fixed to the bottom of the engine mounting platform 7, and the second tension sensor mounting seat 19 is fixed to the top of the platform 21.
[0025] Connect the first tension sensor mounting base 18 and the second tension sensor mounting base 19 to the S-type tension sensor 20, align the second S-type tension sensor fixing hole 44 on the second tension sensor mounting base 19 with the S-type tension sensor 20, align the second S-type tension sensor fixing hole 47 on the S-type tension sensor 20 with the first tension sensor mounting base 18, and then fix it with M12×12 hexagonal bolts (note: tightening torque 142N.m). Align the first tension sensor mounting base fixing hole 45 on the first tension sensor mounting base 18 with the second tension sensor mounting base fixing hole 46 on the engine mounting platform 7, fix the first tension sensor mounting base 18 to the bottom of the engine mounting platform 7 with two M6×12 cylindrical head hexagonal bolts, align the fixing hole on the second tension sensor mounting base 19 with the third tension sensor mounting base fixing hole 27 on the platform 21, and fix the second tension sensor mounting base 19 to the top of the platform 21 with two M6×12 cylindrical head hexagonal bolts.
[0026] The top of the engine mounting platform 7 is equipped with engine supports 5 and 6 for fixing the turbojet engine. The engine supports 5 and 6 are fixed to the top of the engine mounting platform 7 and fastened with two M6×18 cylindrical head hexagon socket bolts. The platform 21 is equipped with an exhaust guide tube corresponding to the tail of the turbojet engine. The exhaust guide tube 1 is clamped by the exhaust guide tube clamp 2 and 3, and the exhaust guide tube clamp 2 and 3 are fastened to the platform 21 through the exhaust guide tube clamp support 4.
[0027] The tail gas guide tube clamp support 4 is welded by a steel plate and a support rod, and the support rod is vertically arranged in the middle of the steel plate. The four corners of the steel plate are provided with a first tail gas guide tube clamp support fixing hole 31, and the platform 21 is provided with a second tail gas guide tube clamp support fixing hole 28. The first tail gas guide tube clamp support fixing hole 31 is aligned with the second tail gas guide tube clamp support fixing hole 28, and then the tail gas guide tube clamp support 4 is fastened to the platform 21 with four M10×20 cylindrical head hexagon socket bolts, and the nuts are located at the bottom (note: tightening torque 85N.m). The support rod of the exhaust guide tube clamp support 4 is fixedly connected to the exhaust guide tube clamps 2 and 3, and the exhaust guide tube 1 is clamped with the exhaust guide tube clamps 2 and 3, so that the exhaust guide tube clamp fixing hole 29 of the lower exhaust guide tube clamp is aligned with the exhaust guide tube clamp fixing hole 30 of the lower exhaust guide tube clamp, and the exhaust guide tube clamp 2 is fastened to the exhaust guide tube clamp 3 with 6 M6×12 cylindrical head hexagon socket bolts, and the nut is located at the bottom (Note: tightening torque 17N.m).
[0028] In the utility model, guide bearings 14, 17 and 15, 16 are respectively sleeved on guide shafts 8 and 9, and guide bearings 14, 17 and 15, 16 are fixed to the bottom of the engine mounting platform 7. When the turbojet engine is started, thrust is generated to push the guide bearings 14, 17 and 15, 16 to move along the guide shafts 8 and 9, and the S-type tension sensor 20 is fixed on the engine mounting platform 7 through the first tension sensor mounting seat 18, and will also move accordingly to measure the thrust generated by the turbojet engine.
[0029] During maintenance, check whether the fasteners are loose or broken, whether the sensors are working properly, and regularly inject a proper amount of grease into the guide bearings 14, 15, 16, and 17.
[0030] The above is only a preferred implementation of the present utility model, which certainly cannot be used to limit the scope of rights of the present utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and changes can be made without departing from the principle of the present invention, and these improvements and changes are also regarded as the protection scope of the present utility model.
Claims
1. A turbojet engine comprehensive test bench, characterized in that: It includes a platform, a guide seat fixed on the platform, a guide shaft fixed between the guide seats, and a guide bearing slidably connected to the guide shaft; The top of the guide bearing is fixedly connected to an engine mounting platform, an S-shaped tension sensor is provided between the platform and the engine mounting platform, two ends of the S-shaped tension sensor are respectively connected to a first tension sensor mounting seat and a second tension sensor mounting seat, the first tension sensor mounting seat is fixed to the bottom of the engine mounting platform, and the second tension sensor mounting seat is fixed to the top of the platform; An engine support for fixing the turbojet engine is installed on the top of the engine mounting platform, and an exhaust gas guide cylinder corresponding to the tail of the turbojet engine is installed on the platform.
2. The turbojet engine comprehensive test bench according to claim 1, characterized in that: The exhaust gas guide tube is clamped by an exhaust gas guide tube clamp, and the exhaust gas guide tube clamp is fastened to the platform through an exhaust gas guide tube clamp support.
3. The turbojet engine comprehensive test bench according to claim 2, characterized in that: The exhaust gas guide tube clamp support is welded by a steel plate and a support rod, and the support rod is vertically arranged in the middle of the steel plate; the support rod is fixedly connected to the exhaust gas guide tube clamp; The four corners of the steel plate are provided with first exhaust gas guide tube clamp support fixing holes, and the platform is provided with second exhaust gas guide tube clamp support fixing holes. The first exhaust gas guide tube clamp support fixing holes are aligned with the second exhaust gas guide tube clamp support fixing holes, and the exhaust gas guide tube clamp support is fastened to the platform with M10×20 cylindrical head hexagon socket bolts.
4. The turbojet engine comprehensive test bench according to claim 1, characterized in that: The guide seat is provided with a first guide seat fixing hole, the platform is provided with a second guide seat fixing hole, the first guide seat fixing hole is aligned with the second guide seat fixing hole on the platform, and the guide seat is fixed to the platform with an M6×20 cylindrical head hexagon socket bolt.
5. The turbojet engine comprehensive test bench according to claim 1, characterized in that: The guide bearing is provided with a first guide bearing fixing hole, and the engine mounting platform is provided with a second guide bearing fixing hole. The first guide bearing fixing hole is aligned with the second guide bearing fixing hole, and the guide bearing is fixed to the engine mounting platform with an M6×25 cylindrical head hexagon socket bolt.
6. The turbojet engine comprehensive test bench according to claim 1, characterized in that: The guide seat has a guide shaft reserved hole, and the two ends of the guide shaft are respectively inserted into the guide shaft reserved holes of the guide seat, and the reserved holes of the guide seat are locked with M6×25 cylindrical head hexagon socket bolts to fix the guide shaft.
7. The turbojet engine comprehensive test bench according to claim 1, characterized in that: A first tension sensor mounting seat fixing hole is provided on the first tension sensor mounting seat, a second tension sensor mounting seat fixing hole is provided on the engine mounting platform, the first tension sensor mounting seat fixing hole is aligned with the second tension sensor mounting seat fixing hole, and the first tension sensor mounting seat is fixed to the engine mounting platform with an M6×12 cylindrical head hexagon socket bolt; a third tension sensor mounting seat fixing hole is provided on the platform, the fixing hole on the second tension sensor mounting seat is aligned with the third tension sensor mounting seat fixing hole, and the second tension sensor mounting seat is fixed to the platform with two M6×12 cylindrical head hexagon socket bolts.