Gas-liquid damper with built-in sensor

Abstract

The utility model belongs to mechanical damping technical field especially relates to a built -in sensor's gas -liquid buffer, including flange plate, oil storage jar, buffer assembly, piston rod, impact head and connecting shell, the outer circumferential place of oil storage jar upper end is installed with flange plate, piston rod is arranged in the inside of oil storage jar and slides, impact head is fixedly connected in piston rod top -end, and the buffer structure is arranged between oil storage jar and piston rod, and connecting shell is fixedly connected in the outside of oil storage jar, and flange plate is located above connecting shell. Through the pressure monitoring and early warning mechanism that pressure detector, detection rod, control module and signal transmitter are formed, the pressure change inside oil storage jar can be perceived in real time, timely alarm is sent before overpressure occurs, is convenient for operation and maintenance personnel to intervene in advance, effectively reduces the risk of sudden failure and the cost of unplanned maintenance.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical vibration reduction technology, and in particular relates to a gas-liquid damper with built-in sensors. Background Technology

[0002] With the increasing demands for operational safety and dynamic reliability in my country's high-speed trains, heavy-duty vehicles, and industrial buffer equipment, gas-liquid buffers, due to their excellent energy absorption and damping adjustment capabilities, are widely used in various applications requiring buffering of impact loads, suppression of sudden motion changes, or control of kinetic energy release. They play an important role in stabilizing motion processes, suppressing transient impacts, and ensuring structural integrity.

[0003] However, under long-term high-frequency operating conditions, the pressure inside the oil reservoir of existing gas-liquid dampers is prone to abnormal increase due to oil compression and temperature rise expansion. When the pressure exceeds the allowable range, it can easily lead to cylinder deformation, seal failure, and increased piston movement resistance, thereby affecting the normal working performance of the gas-liquid damper. If not intervened in time, it may lead to a decrease in buffering function and increase the risk of equipment operation.

[0004] Therefore, a gas-liquid buffer with a built-in sensor is particularly needed to solve the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of existing gas-liquid buffers, such as abnormal pressure rise in the oil storage cylinder due to long-term high-frequency operation, resulting in cylinder deformation and other malfunctions, affecting buffering performance and increasing equipment operation risks, this utility model provides a gas-liquid buffer with built-in sensor.

[0006] This utility model is achieved through the following technical means: a gas-liquid buffer with built-in sensors, including a flange, an oil reservoir, a buffer assembly, a piston rod, an impact head, and a connecting shell. The flange is installed on the outer periphery of the upper end of the oil reservoir. The piston rod is slidably disposed inside the oil reservoir. The impact head is fixedly connected to the top of the piston rod. The buffer structure is disposed between the oil reservoir and the piston rod. The connecting shell is fixedly connected to the outside of the oil reservoir. The flange is located above the connecting shell. It also includes a pressure detector, a detection rod, a control module, and a signal transmitter. The pressure detector is installed on one side of the lower part of the connecting shell. The detection rod is fixedly connected to the rear part of the pressure detector. The detection rod passes through the connecting shell and extends into the oil reservoir. The signal transmitter and the control module are installed sequentially from top to bottom on the front side wall of the connecting shell. Both the pressure detector and the signal transmitter are electrically connected to the control module.

[0007] In one embodiment, the buffer assembly includes an orifice plate, a piston block, a fixed plug, and a spring. The orifice plate is fixedly connected to the center of the oil reservoir. The upper end of the orifice plate passes through the lower end of the piston rod, and the two form a sealed sliding fit. The upper end of the orifice plate is open to communicate with the interior of the piston rod. Multiple equidistant throttling holes are opened at the front of the orifice plate. The piston block is slidably disposed inside the piston rod. The fixed plug is fixedly connected inside the piston rod. The piston block is located below the fixed plug. A vent hole is provided at the center of the fixed plug. The spring is fixedly connected between the piston rod and the oil reservoir.

[0008] In one embodiment, a vibration detection ring is also included. The vibration detection ring is installed on the outer periphery of the upper end of the oil reservoir and located above the flange. The vibration detection ring is electrically connected to the control module.

[0009] In one embodiment, the system further includes a temperature controller, a circulation pipe, and a temperature detector. The temperature controller is mounted on the rear side wall of the connecting housing, and a circulation pipe is fixedly connected to the temperature controller. Most of the circulation pipe is located inside the connecting housing and surrounds the oil reservoir. The temperature detector is mounted inside the oil reservoir. Both the temperature controller and the temperature detector are electrically connected to the control module.

[0010] In one embodiment, the oil storage cylinder is filled with oil, and part of the oil flows into the orifice plate through the throttling hole. The highest point of the oil level in the orifice plate is level with the highest point of the oil level in the oil storage cylinder.

[0011] In one embodiment, an appropriate distance is reserved between the highest point of the oil level in the oil reservoir and the bottom of the piston rod.

[0012] Beneficial effects: 1. Through the pressure monitoring and early warning mechanism composed of pressure detector, detection rod, control module and signal transmitter, the pressure change inside the oil reservoir can be sensed in real time, and an alarm can be issued in time before overpressure occurs, which can facilitate the early intervention of operation and maintenance personnel and effectively reduce the risk of sudden failure and unplanned maintenance costs.

[0013] 2. By setting up a vibration detection ring, the vibration amplitude and frequency changes of the piston rod can be monitored in real time, which helps to identify abnormal external excitation, loose installation or wear of internal components, thereby improving the ability to predict faults and operational reliability.

[0014] 3. The active temperature control structure, consisting of a temperature controller, circulation pipe, and temperature detector, can dynamically adjust the working temperature of the oil reservoir, effectively suppressing the decrease in oil viscosity and nonlinear pressure fluctuations caused by temperature rise, and ensuring long-term stable buffering performance. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2This is a three-dimensional structural diagram of the flange, piston rod, and impact head components of this utility model.

[0017] Figure 3 This is a three-dimensional structural diagram of the oil reservoir cylinder, piston rod, and impact head components of this utility model.

[0018] Figure 4 This is a partial sectional view of the flange, oil reservoir, and piston rod components of this utility model.

[0019] Figure 5 This is a partial sectional view of the oil reservoir cylinder and piston rod components of this utility model.

[0020] In the attached diagram, the following are the reference numerals: 1. Flange, 2. Oil reservoir, 3. Orifice plate, 4. Throttling orifice, 5. Piston rod, 6. Impact head, 7. Piston block, 8. Fixed plug, 9. Connecting shell, 10. Vibration detection ring, 11. Pressure detector, 12. Detection rod, 13. Control module, 14. Signal transmitter, 15. Temperature controller, 16. Circulation pipe, 17. Temperature detector, 18. Spring. Detailed Implementation

[0021] Example: A gas-liquid buffer with a built-in sensor, such as Figures 1-5 As shown, the device includes a flange 1, an oil reservoir 2, a buffer assembly, a piston rod 5, an impact head 6, and a connecting shell 9. The flange 1 is bolted to the outer periphery of the upper end of the oil reservoir 2 to facilitate installation of the oil reservoir 2 into the equipment. The piston rod 5 is slidably disposed inside the oil reservoir 2. The impact head 6 is fixedly connected to the top of the piston rod 5. The buffer structure is disposed between the oil reservoir 2 and the piston rod 5. The connecting shell 9 is fixedly connected to the outside of the oil reservoir 2. The flange 1 is located above the connecting shell 9. The device also includes a pressure detector 11, a detection rod 12, a control module 13, and a signal transmitter 14. The pressure detector 11 is bolted to the lower front side of the connecting shell 9. The detection rod 12 is fixedly connected to the rear of the pressure detector 11. The detection rod 12 passes through the connecting shell 9 and extends into the interior of the oil reservoir 2. The signal transmitter 14 and the control module 13 are bolted to the front side wall of the connecting shell 9 from top to bottom. Both the pressure detector 11 and the signal transmitter 14 are electrically connected to the control module 13.

[0022] like Figure 4 and Figure 5As shown, the buffer assembly includes an orifice plate 3, a piston block 7, a fixed plug 8, and a spring 18. An orifice plate 3 is fixedly connected to the center of the oil reservoir 2. The upper end of the orifice plate 3 passes through the lower end of the piston rod 5, forming a sealed sliding fit. The upper opening of the orifice plate 3 connects to the interior of the piston rod 5. Multiple equidistant throttling holes 4 are provided at the front of the orifice plate 3, allowing the interior of the orifice plate 3 to connect to the interior of the oil reservoir 2. The oil reservoir 2 is filled with oil, and some of the oil flows into the orifice plate 3 through the throttling holes 4. The highest point of the oil level in the orifice plate 3 is the same as the oil level in the oil reservoir 2. The highest position of the liquid level in the oil reservoir 2 is kept level with the bottom of the piston rod 5, and an appropriate distance is reserved between the highest position of the liquid level in the oil reservoir 2 and the bottom of the piston rod 5. This distance serves as a buffer distance to ensure that the oil can flow fully and form stable damping during the downward movement of the piston rod 5. The piston block 7 is slidably disposed inside the piston rod 5. Initially, the piston block 7 is located at the lowest position inside the piston rod 5. The fixed plug 8 is fixedly connected inside the piston rod 5, and the piston block 7 is located below the fixed plug 8. A vent hole is provided at the center of the fixed plug 8. The spring 18 is fixedly connected between the piston rod 5 and the oil reservoir 2.

[0023] like Figure 1 As shown, it also includes a vibration detection ring 10, which is fixed to the outer periphery of the upper end of the oil reservoir 2 by bolts and located above the flange 1. The vibration detection ring 10 is electrically connected to the control module 13.

[0024] like Figure 2 and Figure 4 As shown, it also includes a temperature controller 15, a circulation pipe 16, and a temperature detector 17. The temperature controller 15 is fixed to the rear side wall of the connecting shell 9 by bolts. The circulation pipe 16 is fixedly connected to the temperature controller 15. Most of the pipe section of the circulation pipe 16 is located inside the connecting shell 9 and surrounds the oil reservoir 2. The temperature detector 17 is fixed inside the oil reservoir 2 by bolts. Both the temperature controller 15 and the temperature detector 17 are electrically connected to the control module 13.

[0025] In use, the gas-liquid damper is installed in the equipment via flange 1. When the equipment vibrates or is subjected to external impact, the impact block transmits the force to the piston rod 5, causing the piston rod 5 to slide down into the oil reservoir 2. The spring 18 is compressed accordingly. During the sliding process, the piston rod 5 squeezes the oil in the oil reservoir 2. The pressurized oil flows into the orifice plate 3 through the throttling hole 4, which is lower than the bottom of the piston rod 5. At this time, the highest position of the oil level in the orifice plate 3 is higher than the highest position of the oil level in the oil reservoir 2. At the same time, the orifice plate 3 gradually slides into the piston rod 5 with the relative movement of the piston rod 5. The oil flowing into the orifice plate 3 flows out into the piston rod 5 through the opening at the upper end of the orifice plate 3 and the throttling hole 4, which is higher than the bottom of the piston rod 5, pushing the piston block 7 to move upward. When the piston block 7 rises, the gas inside the piston rod 5 is discharged through the vent hole of the fixed plug 8, thereby realizing the gas-liquid dual buffering mechanism with the synergistic effect of hydraulic damping and gas buffering. During the operation of the gas-liquid buffer, the internal pressure of the oil storage cylinder 2 changes dynamically with the load and frequency. The pressure detector 11 continuously collects pressure data through the detection rod 12. When the pressure exceeds the preset safety threshold, the pressure detector 11 transmits an abnormal signal to the control module 13. The control module 13 drives the signal transmitter 14 to send a warning message to the user terminal. At the same time, the vibration detection ring 10 continuously monitors the vibration amplitude and frequency of the piston rod 5. When the vibration parameter exceeds the set limit, the vibration detection ring 10 transmits a signal to the control module 13. The control module 13 synchronously controls the signal transmitter 14 to send the vibration abnormality information to the user terminal. When the external excitation weakens or disappears, the spring 18 gradually returns to its original state, pushing the piston rod 5 upward. After the piston rod 5 returns to its initial position, it no longer squeezes the oil in the oil reservoir 2. The oil that previously flowed into the piston rod 5 flows back into the orifice plate 3 through the upper opening of the orifice plate 3, and finally flows back into the oil reservoir 2 through the throttling hole 4. The piston block 7 slides downward under its own gravity and resets to the lowest position inside the piston rod 5, completing the buffer reset cycle.

[0026] In addition, the temperature detector 17 continuously monitors the oil temperature inside the oil reservoir 2. When the temperature exceeds the preset threshold, the temperature detector 17 sends a signal to the control module 13. The control module 13 activates the temperature controller 15, drives the cooling medium in the circulation pipe 16 to flow, and performs heat exchange on the outer wall of the oil reservoir 2, thereby reducing the overall temperature of the oil reservoir 2 and maintaining stable oil performance.

Claims

1. A gas-liquid buffer with a built-in sensor, comprising a flange (1), an oil reservoir (2), a buffer assembly, a piston rod (5), an impact head (6), and a connecting shell (9), wherein the flange (1) is installed on the outer periphery of the upper end of the oil reservoir (2), the piston rod (5) is slidably disposed inside the oil reservoir (2), the impact head (6) is fixedly connected to the top end of the piston rod (5), a buffer structure is disposed between the oil reservoir (2) and the piston rod (5), the connecting shell (9) is fixedly connected to the outside of the oil reservoir (2), and the flange (1) is located above the connecting shell (9), characterized in that, It also includes a pressure detector (11), a detection rod (12), a control module (13), and a signal transmitter (14). The pressure detector (11) is installed on the lower side of the connecting shell (9). The detection rod (12) is fixed to the rear of the pressure detector (11). The detection rod (12) passes through the connecting shell (9) and extends into the oil reservoir (2). The signal transmitter (14) and the control module (13) are installed sequentially from top to bottom on the front side wall of the connecting shell (9). The pressure detector (11) and the signal transmitter (14) are both electrically connected to the control module (13).

2. The gas-liquid buffer with a built-in sensor according to claim 1, characterized in that, The buffer assembly includes an orifice plate (3), a piston block (7), a fixed plug (8), and a spring (18). The orifice plate (3) is fixedly connected to the center of the oil reservoir (2). The upper end of the orifice plate (3) passes through the lower end of the piston rod (5), and the two form a sealed sliding fit. The upper end of the orifice plate (3) is connected to the interior of the piston rod (5). Multiple equidistant throttling holes (4) are provided at the front of the orifice plate (3). The piston block (7) is slidably disposed inside the piston rod (5). The fixed plug (8) is fixedly connected inside the piston rod (5). The piston block (7) is located below the fixed plug (8). A vent hole is provided at the center of the fixed plug (8). The spring (18) is fixedly connected between the piston rod (5) and the oil reservoir (2).

3. A gas-liquid buffer with a built-in sensor according to claim 2, characterized in that, It also includes a vibration detection ring (10), which is installed on the outer periphery of the upper end of the oil reservoir (2) and located above the flange (1). The vibration detection ring (10) is electrically connected to the control module (13).

4. A gas-liquid buffer with a built-in sensor according to claim 3, characterized in that, It also includes a temperature controller (15), a circulation pipe (16) and a temperature detector (17). The temperature controller (15) is installed on the rear side wall of the connecting shell (9). The circulation pipe (16) is fixed to the temperature controller (15). Most of the pipe section of the circulation pipe (16) is located inside the connecting shell (9) and surrounds the oil reservoir (2). The temperature detector (17) is installed inside the oil reservoir (2). Both the temperature controller (15) and the temperature detector (17) are electrically connected to the control module (13).

5. A gas-liquid buffer with a built-in sensor according to claim 4, characterized in that, The oil storage cylinder (2) is filled with oil, and some of the oil flows into the orifice plate (3) through the throttling hole (4). The highest position of the oil level in the orifice plate (3) is flush with the highest position of the oil level in the oil storage cylinder (2).

6. A gas-liquid buffer with a built-in sensor according to claim 5, characterized in that, An appropriate distance is reserved between the highest position of the oil level in the oil reservoir (2) and the bottom of the piston rod (5).

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