Dual-fuel turbine simulator and distribution board thereof

Abstract

The invention discloses a dual-fuel turbine simulator and a distribution board thereof, the dual-fuel turbine simulator comprises a bearing seat, a fixed platform and an impact simulation table, the bearing seat is arranged between the fixed platform and the impact simulation table, and the bearing seat is used for placing a dual-fuel turbine; an opening matched with the bearing seat is formed in the middle of the fixed platform, debugging motors are installed at the four corners of the top end of the fixed platform, wire wheels are fixed to output shafts of the debugging motors, steel ropes are wound around the wire wheels, fixed seats are connected to the four corners of the side end of the bearing seat, spherical hinge connectors are arranged on the fixed seats, and one ends of the steel ropes vertically extend downwards; the traction rod is fixed with the corresponding spherical hinge connector to form a traction structure; through cooperative control of the multi-degree-of-freedom inclination system, the annular driving composite vibration table and the direction-adjustable impact assembly, full-dimensional environment simulation of the ship turbine under multiple working conditions of inclination, vibration and impact is realized.

Description

Technical Field

[0001] This invention relates to the field of marine engine testing technology, specifically a dual-fuel turbine simulator and its power distribution board. Background Technology

[0002] With the continuous development of my country's shipping industry, the requirements for ship reliability are also increasing. Although manufacturers are constantly improving the structure, perfecting the ship type series, gradually increasing the strength, and extending the life of components, reliability cannot be completely improved. How to ensure the reliability and safety of ships and their systems has become an urgent problem to be solved.

[0003] Marine dual-fuel turbines, serving as the "heart" of a ship, require a series of performance simulations before leaving the factory and can only be used after meeting certain standards. These simulations include electrical performance simulations, mechanical performance simulations, environmental adaptability simulations, and reliability simulations. Among these, reliability simulations include life tests, shock tests, vibration tests, high-temperature tests, low-temperature tests, and high-humidity tests.

[0004] However, existing technology only simulates vibration, while the engine will constantly sway as the ship moves. During the swaying, the engine will tilt significantly, which poses a huge challenge to the electronic products on the engine and the connection strength of the engine components. Summary of the Invention

[0005] The purpose of this invention is to provide a dual-fuel turbine simulator and its power distribution board to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a dual-fuel turbine simulator, comprising a support base, a fixed platform, and an impact simulation table. The support base is disposed between the fixed platform and the impact simulation table, and is used to mount the dual-fuel turbine. The fixed platform has an opening in the middle that is adapted to the support base. A test motor is installed at each of the four corners of the top of the fixed platform. A spool is fixed on the output shaft of each test motor, and a steel rope is wound on the spool. Fixed seats are connected to the four corners of the side of the support base. Ball joint connectors are provided on the fixed seats. One end of the steel rope extends vertically downward and is fixed to the corresponding ball joint connector to form a traction structure. Thus, by controlling the winding and unwinding of the steel rope by different test motors, the traction effect of the steel rope on the ball joint connector can be used to achieve multi-directional tilt adjustment of the support base. The impact simulation platform includes a ring frame and an arc-shaped base frame connected to the bottom of the ring frame. A ring-shaped pressure frame is installed on the outer periphery of the support seat. Multiple pressure members are evenly distributed on the surface of the pressure frame. The ring frame is equipped with a drive device that can move along its track. The drive device can generate radial thrust by contacting the pressure members to achieve multi-directional swaying, or it can directly pull the pressure members to perform horizontal reciprocating motion. The arc-shaped base frame is equipped with an impact assembly that can move along its track. The impact assembly achieves controllable displacement through a servo drive system and performs directional impact on the bottom of the support seat during the movement.

[0007] Furthermore, an annular drive block is rotatably embedded at the top of the annular frame, and a through-hole is opened on the outer circumference of the annular frame, extending to the side end of the annular drive block. A toothed ring is fitted on the annular drive block, and the toothed ring extends out of the outer side of the annular frame through the through-hole and is connected to the drive motor for transmission. The drive device includes a base and a first telescopic cylinder. The base is fixed to the top of the annular drive block, and the first telescopic cylinder is disposed on the base. The piston rod end of the first telescopic cylinder is provided with an abutment. When the abutment engages with the pressing member, the first telescopic cylinder can pull the bearing seat to move horizontally. As the drive block continues to rotate, the abutment changes to push the pressing member obliquely, generating multi-directional shaking excitation.

[0008] Furthermore, the rear end of the pressing member is hinged to the side end of the pressing frame, allowing the pressing member to rotate up and down. A torsion spring is connected between the rotating shaft of the pressing member and the pressing frame. The front end of the pressing member has a hook structure, and the end of the abutting member away from the first telescopic cylinder has a hook structure that matches the pressing member.

[0009] Furthermore, the steel rope includes an upper connecting rope and a lower connecting rope, and a vibration assembly is connected between the upper connecting rope and the lower connecting rope. The upper connecting rope is connected to a reel, and the other end of the lower connecting rope is connected to a ball joint connector. The vibration assembly includes a fixed rod, a movable rod, and two opposing upper and lower conical springs arranged in an hourglass shape. The top of the movable rod has a socket adapted to the fixed rod, and the lower part of the fixed rod is slidably inserted into the socket. The upper and lower conical springs are respectively located at the bottom of the fixed rod and the top of the movable rod, and the upper and lower conical springs are connected. The upper connecting rope is connected to the fixed rod, and the lower connecting rope is connected to the movable rod.

[0010] Furthermore, the side end of the movable rod is provided with an air valve port, which is connected to an air pump through a pipe and is connected to the bottom of the insertion hole.

[0011] Furthermore, the impact assembly includes a movable seat, a second telescopic cylinder, and an impact member. The top of the arc-shaped base frame has a slide bar opening, and the movable seat is slidably mounted on the slide bar opening. Arc-shaped guide rods and rack tracks are respectively provided on the front and rear sides of the arc-shaped base frame. One end of the movable seat is slidably mounted on the surface of the guide rod, and the other end is rotatably equipped with a gear that meshes with the arc-shaped rack. The movable seat is equipped with a motor for driving the gear to rotate. The second telescopic cylinder is mounted on the movable seat, and the piston rod extends through to the upper end of the arc-shaped base frame. The impact member includes an impact block, a push block, and several buffer springs. The push block is mounted on the second telescopic cylinder, and its top surface is connected to the impact block through the buffer springs.

[0012] Furthermore, the push block is provided with several auxiliary impact mechanisms, each including a frame, a sleeve, a push rod, and an electromagnet coil. The frame is fixedly assembled to the side of the push block, the sleeve is disposed inside the frame, the electromagnet coil is sleeved on the outer wall of the sleeve, the push rod is slidably disposed inside the sleeve and extends outward from the outer side of the sleeve at both ends, the rear end of the push rod is provided with an end cap, a return spring sleeved on the surface of the push rod is connected between the end cap and the rear end face of the sleeve, the front end of the push rod is connected to the impact block, and the electromagnet coil is energized to magnetically attract the push rod to move forward.

[0013] The present invention also provides a power distribution board for the above-mentioned dual-fuel turbine simulator, including a main control module and a dynamic protection system. The main control module is electrically connected to the test motor, the drive motor and the first telescopic cylinder via a CAN bus. The dynamic protection system integrates a bidirectional energy storage capacitor bank and a ground fault detection unit to match the power demand of the impact components in real time.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention features a compact structure and reasonable design. Through its unique "tilt-vibration-impact" three-state collaborative system, it achieves a full-dimensional reproduction of the ship's actual operating conditions. The four-corner adjustment motor, through steel cable traction of the bearing seat and combined with the omnidirectional adjustment capability of the ball joint connector, realizes three basic modes: roll / pitch / compound tilt, perfectly simulating complex attitude changes during navigation. The annular drive block drives the first telescopic cylinder to perform circular motion. Through the dynamic contact between the abutment and pressing parts, it can generate horizontal traction force to simulate mooring loads and can also be converted into oblique thrust to generate multi-directional swaying. The linkage control between the annular drive block and the conical spring group simulates swaying and vibration during navigation. The modular impact component can generate transient impact loads in any direction.

[0015] 2. This invention can cover all key nodes of a marine engine from factory testing to scrap assessment, from low-frequency rolling in moored conditions to high-frequency vibrations at full speed, and from conventional wave excitation to extreme collision conditions. In particular, it can expose potential faults that traditional single-axis vibration tables cannot detect in advance, from low-frequency rolling in moored conditions to high-frequency vibrations at full speed. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a dual-fuel turbine simulator according to the present invention; Figure 2 for Figure 1 Enlarged view of a portion of point A in the middle; Figure 3 This is a schematic diagram of the arc-shaped base frame structure of the present invention; Figure 4 for Figure 1 Enlarged view of a section at point B in the middle; Figure 5 This is a cross-sectional view of the vibration component of the present invention; Figure 6 This is a schematic diagram of the impact component of the present invention.

[0017] In the diagram, the components are: bearing seat-1, fixed platform-2, debugging motor-3, reel-4, steel rope-5, fixed seat-6, ball joint connector-7, ring frame-8, arc-shaped base frame-9, pressure frame-10, pressure component-11, ring drive block-12, gear ring-13, base-14, first telescopic cylinder-15, abutment component-16, vibration assembly-18, lower connecting rope-19, fixed rod-20, movable rod-21, and upper... 22. Conical spring - 23. Lower conical spring - 24. Insertion hole - 25. Air valve port - 26. Moving seat - 27. Second telescopic cylinder - 28. Impact component - 29. Sliding bar port - 30. Gear - 31. Rack and pinion track - 32. Motor - 33. Impact block - 34. Push block - 35. Buffer spring - 36. Frame - 37. Push rod - 38. End cap - 39. Return spring - 40. Impact block - 41. Upper connecting rope - 41. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figures 1 to 6As shown, a dual-fuel turbine simulator includes a support base 1, a fixed platform 2, and an impact simulation table. The support base 1 is located between the fixed platform 2 and the impact simulation table, both of which are fixedly mounted on a frame. The support base 1 is used to house the dual-fuel turbine. The fixed platform 2 has an opening in the middle that matches the support base 1. Each of the four corners of the top of the fixed platform 2 is equipped with a test motor 3. Each test motor 3 has a spool 4 fixed on its output shaft, and a steel rope 5 is wound on the spool 4. Each of the four corners of the side of the support base 1 is connected to a fixed seat 6. A ball joint connector 7 is provided on the fixed seat 6. One end of the steel rope 5 extends vertically downward and is fixed to the corresponding ball joint connector 7 to form a traction structure. By controlling the winding and unwinding of the steel rope 5 by different test motors 3, the traction effect of the steel rope 5 on the ball joint connector 7 can be used to achieve multi-directional tilt adjustment of the support base 1. During the initial installation, all the test motors 3 synchronously wind up the steel rope 5 to bring the bearing seat 1 to the horizontal zero position. Then, the dual-fuel turbine is installed on the bearing seat 1, or its shock-absorbing base is installed on the bearing seat 1 together to test the seismic resistance. Then, the test motors 3 synchronously unwind the steel rope 5 to lower the bearing seat 1 to the preset position. Four adjustment motors 3 operate differently according to the target tilt direction: the corner motor that needs to be lifted winds up the steel rope 5, while the corresponding side motor releases the steel rope 5 synchronously, changing the spatial posture of the support seat 1 through the asymmetrical change in the length of the steel rope 5. The ball joint connector 7 converts the tension of the steel rope 5 into multi-angle torque, ensuring smooth and jam-free tilting. During the tilting process, each motor fine-tunes the winding and releasing amount in real time to compensate for the torque changes caused by the shift in the center of gravity. When the preset tilt angle is reached, the motor maintains a constant torque to lock the pulley 4, achieving steady tilting through the balance between the tension of the steel rope 5 and the self-weight of the support seat 1. The system supports free switching between roll, tilt, and combined tilting modes.

[0020] The following are the corresponding actions of each test motor 3 under different simulated working conditions: I. Rolling Operation Control (Left and Right Tilt): The two motors on the left (No. 1 and No. 3) synchronously wind up the steel rope 5, and the two motors on the right (No. 2 and No. 4) synchronously release the steel rope 5. The ratio of winding speed to releasing speed is 1:1, forming a rotational torque around the X-axis.

[0021] Example of action: When the ship is subjected to waves on the starboard side, motor 1 winds up 3 times, motor 3 winds up 3 times; motor 2 releases 3 times, motor 4 releases 3 times, and the bearing seat 1 presents a rolling posture with the left side higher than the right side.

[0022] II. Tilting Control (Forward and Backward Tilting): The two front motors (No. 1 and No. 2) synchronously wind up the steel rope 5, and the two rear motors (No. 3 and No. 4) synchronously release the steel rope 5. The amount of winding and releasing is adjusted proportionally according to the tilt angle requirements.

[0023] Example of action: When simulating the ship accelerating and pitching up, motor 1 winds up 2.5 turns, motor 2 winds up 2.5 turns; motor 3 releases 2.5 turns, motor 4 releases 2.5 turns, and bearing seat 1 forms a pitching state with the front higher than the rear.

[0024] III. Composite Tilt Control (Mixed Working Conditions): Diagonal motor sets form a couple (e.g., No. 1 & No. 4 vs. No. 2 & No. 3). Example of action: When simulating a ship tilting to the side during a surge, No. 1 motor winds up 4 turns, No. 4 motor winds up 2 turns; No. 2 motor releases 3 turns, No. 3 motor releases 1 turn, and the bearing seat 1 exhibits a composite tilt with the left front higher and the right rear lower.

[0025] The impact simulation platform includes a ring frame 8 and an arc-shaped base frame 9 connected to the bottom of the ring frame 8. The outer periphery of the bearing seat 1 is equipped with a ring-shaped pressure frame 10. Multiple pressure members 11 are evenly distributed on the surface of the pressure frame 10. The ring frame is equipped with a drive device that can move along its track. The drive device can generate radial thrust by contacting the pressure members 11 to achieve multi-directional swaying, and can also directly pull the pressure members 11 to perform horizontal reciprocating motion. The arc-shaped base frame 9 is equipped with an impact component that can move along its track. The impact component achieves controllable displacement through a servo drive system and performs directional impact on the bottom of the bearing seat 1 during the movement.

[0026] In this embodiment, an annular drive block 12 is rotatably embedded at the top of the annular frame 8. A through-hole is opened on the outer circumferential surface of the annular frame 8, extending to the side end of the annular drive block 12. A toothed ring 13 is fitted on the annular drive block 12, and the toothed ring 13 extends out of the outer side of the annular frame 8 through the through-hole and is connected to the drive motor. The drive device includes a base 14 and a first telescopic cylinder 15. The base 14 is fixed to the top of the annular drive block 12, and the first telescopic cylinder 15 is disposed on the base 14. An abutment member 16 is provided at the end of the piston rod of the first telescopic cylinder 15. The rear end of the pressing member 11 is hinged to the side end of the pressing frame 10, so that the pressing member 11 can rotate up and down. A torsion spring is connected between the rotating shaft of the pressing member 11 and the pressing frame. The front end of the pressing member 11 has a hook structure, and the end of the abutment member 16 away from the first telescopic cylinder 15 has a hook structure that matches the pressing member 11.

[0027] The vibration simulation function of the dual-fuel turbine simulator includes two independent operating modes: horizontal displacement mode and compound sway mode. These two modes are implemented through differentiated action logic of the ring frame drive device and can be started separately according to test requirements.

[0028] ① The core objective of the horizontal displacement mode is to simulate the slow drifting state of a ship during berthing or to reproduce quasi-static loads such as mooring pull. It achieves precise horizontal displacement of the bearing seat through rigid traction, maintaining the inertial characteristics of the ship's equipment. In the horizontal displacement mode, the first telescopic cylinder 15 drives the abutment 16 to extend a certain distance towards the bearing seat 1. When the annular drive block 12 rotates clockwise to a predetermined angle, the hook of the abutment 16 will engage with the pressing part 11. Then, the first telescopic cylinder 15 initiates linear telescopic motion, directly pulling the annular pressing frame 10 horizontally back and forth through rigid connection. The bearing seat 1 produces precise and controllable displacement sway (used to simulate quasi-static loads such as mooring pull). After the simulation is completed, the annular drive block 12 is rotated in the opposite direction to separate the abutment 16 from the pressing part 11, and then the first telescopic cylinder 15 is reset.

[0029] When the bearing seat 1 is in horizontal displacement, the bearing seat 1 is always vertically constrained by the steel rope 5 (the steel rope only provides vertical tension support and cannot limit the slight horizontal lifting). However, since the pressure member 11 is connected to the pressure frame 10 through the rear hinge structure, it can flexibly rotate downward around the hinge point. This design can effectively compensate for the positional deviation of the bearing seat caused by the slight lifting, so that the hook structure at the front end of the pressure member 11 always keeps in close contact with the abutment member 16, avoiding separation between the two during power transmission, and ultimately ensuring that the traction force is transmitted from the drive device to the bearing seat without interruption.

[0030] ② The composite swaying mode focuses on reproducing the multi-directional coupled motion of a ship under the influence of waves during navigation. When entering the multi-directional swaying transition, the drive motor drives the annular drive block 12 to rotate continuously counterclockwise along the track of the annular frame 8. After entering the multi-directional swaying transition stage, as the annular drive block 12 rotates counterclockwise, the non-hook surface of the abutment 16, away from the hook structure, will form periodic contact and compression with the front end of the pressing member 11. When the annular drive block 12 rotates once, it will exert a compression effect on the pressing members 11 on each side. When the abutment 16 contacts the pressing member 11, it will produce A rigid thrust is generated along the tangential direction of the ring. Under the action of this thrust, the pressing component drives the ring pressing frame 10 fixed with it to move synchronously. When the ring drive block 12 continues to rotate counterclockwise, after the pressing component 16 disengages, other pressing components that rotate with the ring drive block 12 will again form rigid compression in different directions on the pressing component 11, causing the pressing frame 10 to produce a continuous swaying motion. This periodic cycle of "contact compression - driving movement - disengagement - compression again" forms a periodic swaying motion, ultimately reproducing the multi-directional coupled motion generated by the waves during the ship's navigation.

[0031] In this embodiment, the steel rope 5 includes an upper connecting rope 41 and a lower connecting rope 19, and a vibration assembly is connected between the upper connecting rope 41 and the lower connecting rope 19. The upper connecting rope 41 is connected to a reel, and the other end of the lower connecting rope 19 is connected to a ball joint connector. The vibration assembly 18 includes a fixed rod 20, a movable rod 21, and two oppositely arranged upper conical springs 22 and lower conical springs 23 distributed in an hourglass shape. The top of the movable rod 21 has an insertion hole 24 that matches the fixed rod 20. The lower part of the fixed rod 20 is slidably inserted into the insertion hole 24. The upper conical spring 22 and the lower conical spring 23 are respectively located at the bottom of the fixed rod 20 and the top of the movable rod 21, and the upper conical spring 22 and the lower conical spring 23 are connected. The upper connecting rope 41 is connected to the fixed rod 20, and the lower connecting rope 19 is connected to the movable rod 21. The air valve port 25 is connected to the air pump through a pipe, and the air valve port 25 is connected to the bottom of the insertion hole 24.

[0032] When simulating tilting conditions, the air pump fills the socket 24 with high-pressure gas (0.3-0.6MPa). The gas pressure presses the fixed rod 20 and the movable rod 21 tightly. At this time, the upper and lower conical springs 23 are forcibly constrained and cannot produce elastic deformation, ensuring the stability of the bearing seat 1 during tilting adjustment. When performing vibration simulation, the air valve quickly exhausts the gas to release the pressure in the socket 24, the movable rod 21 regains its degree of freedom, and the upper and lower conical springs 23 form an "hourglass" vibration system, enabling the lower bearing seat 1 to vibrate up and down. At the same time, the upper and lower conical springs 23 amplify low-frequency energy through nonlinear deformation, reproducing the typical vibration spectrum of the ship's main engine.

[0033] In this embodiment, the impact assembly includes a movable seat 26, a second telescopic cylinder 27, and an impact member 28. The top of the arc-shaped base frame 9 has a sliding slot 29, and the movable seat 26 is slidably mounted on the sliding slot 29. Arc-shaped guide rods and rack rails 31 are respectively provided on the front and rear sides of the arc-shaped base frame 9. One end of the movable seat 26 is slidably mounted on the surface of the guide rod, and the other end is rotatably provided with a gear 30 that meshes with the arc-shaped rack. The movable seat 26 is provided with a motor 32 for driving the gear 30 to rotate. The second telescopic cylinder 27 is mounted on the movable seat 26, and the piston rod extends through to the upper end of the arc-shaped base frame 9. The impact member 28 includes an impact block 33, a push block 34, and several buffer springs 35. The push block 34 is mounted on the second telescopic cylinder 27, and its top surface is connected to the impact block 33 through the buffer springs 35. The buffer springs 35 are provided to avoid damage to the equipment due to rigid transmission and to simulate the deformation and energy absorption of the ship's structure.

[0034] In this embodiment, the push block 34 is provided with several auxiliary impact mechanisms. The auxiliary impact mechanisms include a frame 36, a sleeve, a push rod 37 and an electromagnet coil. The frame 36 is fixedly assembled to the side of the push block 34. The sleeve is disposed inside the frame 36. The electromagnet coil is sleeved on the outer wall of the sleeve. The push rod 37 is slidably disposed inside the sleeve and extends out of the outer side of the sleeve at both ends. The rear end of the push rod 37 is provided with an end cap 38. A return spring 39 sleeved on the surface of the push rod 37 is connected between the end cap 38 and the rear end face of the sleeve. The front end of the push rod 37 is connected to the impact block 40. When the electromagnet coil is energized, the push rod 37 is moved forward by magnetic attraction. The impact assembly is used to simulate collision events encountered by ships during operation, such as running aground. The movable seat 26 slides along the arc-shaped base 9, and the impact angle is infinitely adjustable via a gear and rack mechanism driven by a motor 32. This simulates the impact effect on the engine from different impact points. For example, based on the simulated grounding angle (e.g., a 45° lateral impact), the motor 32 drives the movable seat 26 to the target position, and then the impact simulation is performed. Main impact: The second telescopic cylinder 27 provides the basic impact force (simulating the direct impact force when hitting a reef); the second telescopic cylinder 27 outputs the impact force in the form of a trapezoidal wave (simulating the energy absorption of the ship's structural deformation).

[0035] Auxiliary impact: The electromagnet is activated synchronously at the peak moment, and the electromagnet coil is energized instantaneously, which drives the push rod 37 and the punch block 40 to generate an additional impact pulse (simulating the secondary scraping effect of the reef).

[0036] This embodiment also provides a power distribution board for the above-mentioned dual-fuel turbine simulator, including a main control module and a dynamic protection system. The main control module is electrically connected to the debugging motor 3, the drive motor and the first telescopic cylinder 15 via a CAN bus. The dynamic protection system integrates a bidirectional energy storage capacitor bank and a ground fault detection unit to match the power demand of the impact components in real time. The power distribution board is equipped with a 7-inch touch screen and a mechanical emergency stop button on its surface. The internal circuit adopts a dual protection structure of fuse and interlocking switch.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dual-fuel turbine simulator, characterized in that: The system includes a support, a fixed platform, and an impact simulation table. The support is positioned between the fixed platform and the impact simulation table and is used to house a dual-fuel turbine. The fixed platform has an opening in the middle that matches the support. Each of the four corners of the top of the fixed platform is equipped with a test motor, and each test motor has a spool fixed to its output shaft. A steel rope is wound on the spool. Each of the four corners of the side of the support is connected to a fixed seat, and a ball joint connector is provided on the fixed seat. One end of the steel rope extends vertically downward and is fixed to the corresponding ball joint connector to form a traction structure. By controlling the winding and unwinding of the steel rope by different test motors, the traction effect of the steel rope on the ball joint connector can be used to achieve multi-directional tilt adjustment of the support. The impact simulation platform includes a ring frame and an arc-shaped base frame connected to the bottom of the ring frame. A ring-shaped pressure frame is installed on the outer periphery of the support seat. Multiple pressure members are evenly distributed on the surface of the pressure frame. The ring frame is equipped with a drive device that can move along its track. The drive device can generate radial thrust by contacting the pressure members to achieve multi-directional swaying, or it can directly pull the pressure members to perform horizontal reciprocating motion. The arc-shaped base frame is equipped with an impact assembly that can move along its track. The impact assembly achieves controllable displacement through a servo drive system and performs directional impact on the bottom of the support seat during the movement.

2. The dual-fuel turbine simulator according to claim 1, characterized in that: The top of the annular frame is rotatably fitted with an annular drive block. The outer circumference of the annular frame has a through-hole extending to the side end of the annular drive block. A toothed ring is fitted on the annular drive block, and the toothed ring extends out of the outer side of the annular frame through the through-hole and is connected to the drive motor. The drive device includes a base and a first telescopic cylinder. The base is fixed to the top of the annular drive block, and the first telescopic cylinder is disposed on the base. The piston rod end of the first telescopic cylinder is provided with an abutment. When the abutment engages with the pressing member, the first telescopic cylinder can pull the bearing seat to move horizontally. As the drive block continues to rotate, the abutment changes to push the pressing member obliquely, generating multi-directional shaking excitation.

3. A dual-fuel turbine simulator according to claim 2, characterized in that: The rear end of the pressing member is hinged to the side of the pressing frame, allowing the pressing member to rotate up and down. A torsion spring is connected between the rotating shaft of the pressing member and the pressing frame. The front end of the pressing member has a hook structure, and the end of the abutting member away from the first telescopic cylinder has a hook structure that matches the pressing member.

4. A dual-fuel turbine simulator according to claim 1, characterized in that: The steel rope includes an upper connecting rope and a lower connecting rope, and a vibration assembly is connected between the upper connecting rope and the lower connecting rope. The upper connecting rope is connected to a reel, and the other end of the lower connecting rope is connected to a ball joint connector. The vibration assembly includes a fixed rod, a movable rod, and two opposing upper and lower conical springs arranged in an hourglass shape. The top of the movable rod has a socket adapted to the fixed rod, and the lower part of the fixed rod is slidably inserted into the socket. The upper and lower conical springs are respectively located at the bottom of the fixed rod and the top of the movable rod, and the upper and lower conical springs are connected. The upper connecting rope is connected to the fixed rod, and the lower connecting rope is connected to the movable rod.

5. A dual-fuel turbine simulator according to claim 4, characterized in that: The side end of the movable rod is provided with an air valve port, which is connected to an air pump through a pipe and is connected to the bottom of the insertion hole.

6. A dual-fuel turbine simulator according to claim 1, characterized in that: The impact assembly includes a movable base, a second telescopic cylinder, and an impact member. A sliding groove is provided at the top of the arc-shaped base frame, and the movable base is slidably mounted on the sliding groove. Arc-shaped guide rods and rack tracks are respectively provided on the front and rear sides of the arc-shaped base frame. One end of the movable base is slidably mounted on the surface of the guide rod, and the other end is rotatably equipped with a gear that meshes with the arc-shaped rack. A motor for driving the gear rotation is provided on the movable base. The second telescopic cylinder is mounted on the movable base, and its piston rod extends through to the upper end of the arc-shaped base frame. The impact member includes an impact block, a push block, and several buffer springs. The push block is mounted on the second telescopic cylinder, and its top surface is connected to the impact block through the buffer springs.

7. A dual-fuel turbine simulator according to claim 6, characterized in that: The push block is equipped with several auxiliary impact mechanisms, each including a frame, a sleeve, a push rod, and an electromagnet coil. The frame is fixedly mounted on the side of the push block, the sleeve is located inside the frame, the electromagnet coil is sleeved on the outer wall of the sleeve, the push rod is slidably disposed inside the sleeve and extends outward from the sleeve at both ends, the rear end of the push rod is provided with an end cap, a return spring sleeved on the surface of the push rod is connected between the end cap and the rear end face of the sleeve, the front end of the push rod is connected to the impact block, and the push rod is moved forward by magnetic attraction when the electromagnet coil is energized.

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