A gas inertia damper device

Abstract

The present application relates to a kind of gas inertial damper device, comprising: internal hollow and fill in pressurized working gas cylinder (6);With the piston (1) of cylinder (6) connection, and the piston rod (2) of the horizontal movement of push piston (1);With the cylinder (6) connection two parallel cylindrical gas valve (7), its surface is equipped with several positive gas valve (11) and the reverse gas valve (10) of the working gas flow rate enhancement of making working gas flow rate slow down;Rotatable flywheel (8) between two cylindrical gas valve (7).Compared with prior art, the present application has the advantages of simple structure, light weight, small space, stable speed-related damping force and relative acceleration-related inertia force can be generated.

Description

Technical Field

[0001] This invention relates to the field of vibration control technology, and in particular to a gas inertial capacitance vibration damping device. Background Technology

[0002] Existing gas inertial-capacitance devices mainly achieve inertia through external pipes connected to a cylinder. The mechanism involves the horizontal movement of a piston causing gas in the cylinder to push liquid within the pipe. The inertial coefficient is primarily related to the characteristics and length of the liquid in the pipe, leading to complex detailed construction. Furthermore, the inertial-capacitance mechanism ceases to function once liquid enters the cylinder. Besides individual gas inertial-capacitance devices, existing gas inertial-capacitance vibration damping devices are complex in construction, typically requiring an external damper, which occupies a large space and is inconvenient to use. Therefore, there is an urgent need for a gas inertial-capacitance vibration damping device that is simple in structure, lightweight, and requires minimal space. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art by providing a gas inertial capacitance damping device. It has a simple structure, is lightweight, requires little space, and can generate stable velocity-dependent damping force and relative acceleration-dependent inertial force.

[0004] The objective of this invention can be achieved through the following technical solutions:

[0005] A gas inertial capacitance vibration damping device, comprising:

[0006] A hollow cylinder filled with pressurized working gas;

[0007] A piston connected to the cylinder, and a piston rod that pushes the piston to move horizontally;

[0008] Two parallel cylindrical gas valves connected to the cylinder are provided on their surfaces with a number of forward gas valves that increase the flow rate of the working gas and reverse gas valves that decrease the flow rate of the working gas.

[0009] A rotatable flywheel located between two cylindrical gas valves.

[0010] Furthermore, the pressurized working gas includes pressurized nitrogen or helium.

[0011] Furthermore, the cylindrical gas valve divides the cylinder into a first gas chamber, a second gas chamber, and a third gas chamber.

[0012] Furthermore, the piston and piston rod are located in the first gas chamber. When the piston rod pushes the piston to move horizontally, the working gas flows inside the cylinder, which can change the volume of the working gas inside the cylinder and generate a damping force.

[0013] Furthermore, there is a gap between the piston and the cylinder. When the working gas passes through the gap, it will flow and generate a nonlinear damping force.

[0014] Furthermore, the flywheel is located in the second gas chamber, and the center of rotation of the flywheel is colinear with the central axis of the second gas chamber.

[0015] Furthermore, the flywheel is fixed between two cylindrical gas valves via a flywheel shaft, and rotates through the airflow at the outlet of the positive gas valve. The flywheel is rotatably connected to the flywheel shaft via a bearing structure.

[0016] Furthermore, the flywheel includes a disc rotatably connected to the flywheel shaft and several blades fixed on the disc.

[0017] Furthermore, the number of blades is 4 to 10.

[0018] Furthermore, the third gas chamber is connected to the cylindrical gas valve and is located on the side of the cylinder barrel away from the first gas chamber.

[0019] Furthermore, the forward gas valve is a forward-oriented Tesla valve, with 2 to 6 valves provided on each cylindrical gas valve.

[0020] Furthermore, the reverse gas valve is a Tesla valve arranged in reverse, with 2 to 6 valves provided on each cylindrical gas valve.

[0021] The working gas flow rate is enhanced through the forward gas valve, while the working gas flow rate is reduced through the reverse gas valve, resulting in turbulence. At the same time, the turbulence of the working gas will significantly consume the energy of the external input device.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] (1) The gas inertial capacitance vibration damping device of the present invention can realize the mass amplification effect, adjust the frequency of the structure, and improve the vibration resistance. At the same time, the device is mainly based on gas flow to realize transmission, and the realization mechanism is more reliable than the traditional realization mechanism based on mechanical transmission. The device consumes energy through the friction between the gas and the cavity wall and the heat generated by the gas volume change. Compared with the traditional viscous damper with dimethyl silicone oil as the working fluid, the weight of the device is greatly reduced and the economic efficiency of the device is improved.

[0024] (2) The working gas in the gas inertial capacity damping device of the present invention will generate turbulence in the cylindrical gas valve, thereby consuming a large amount of energy in the input device, and achieving low speed exponential nonlinear damping force in a small space.

[0025] (3) The gas inertial volume damping device shown in this invention achieves a mass amplification effect by driving the working gas to flow in pipes with different cross sections and the rotation of the flywheel through the horizontal movement of the piston, thereby improving the apparent mass amplification factor of the device.

[0026] (4) The gas inertial volume damping device shown in this invention has a simple structure and is lightweight, and can be applied to various objects such as building structures and automobiles.

[0027] (5) When the gas inertial-capacitive vibration damping device shown in this invention is installed on the external structure, the frequency of the external structure can be adjusted and the vibration energy input to the external structure can be absorbed and dissipated, realizing the integration of the inertial-capacitive device and the damping device, and reducing the complex mechanical connection structure.

[0028] (6) The gas inertial capacity damping device of the present invention can achieve a variable inertial capacity coefficient by changing the pressure of the working gas inside the device.

[0029] (7) The gas inertial volume damping device shown in this invention uses gas transmission instead of mechanical transmission, which reduces maintenance costs and space requirements, and lowers the processing requirements of the device. Attached Figure Description

[0030] Figure 1 This is a schematic cross-sectional view of the gas inertial capacitance vibration damping device shown in Example 1;

[0031] Figure 2 This is a three-dimensional structural schematic diagram of the flywheel shown in Example 1;

[0032] Figure 3 This is a schematic diagram of the end face of the cylindrical gas valve shown in Example 1;

[0033] Figure 4 This is a front view of the cylindrical gas valve and flywheel assembly shown in Example 1;

[0034] Figure 5 This is a top view of the cylindrical gas valve and flywheel assembly shown in Example 1;

[0035] Figure 6 This is a three-dimensional structural schematic diagram of the cylindrical gas valve and flywheel assembly shown in Example 1.

[0036] Explanation of markings in the diagram:

[0037] 1-Piston, 2-Piston rod, 3-First gas chamber, 4-Second gas chamber, 5-Third gas chamber, 6-Cylinder, 7-Cylindrical gas valve, 8-Flywheel, 9-Flywheel shaft, 10-Reverse gas valve, 11-Forward gas valve. Detailed Implementation

[0038] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are based on the technical solutions of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments. In the following embodiments or examples, unless otherwise specified, the functional components or structures are conventional components or structures used in the art to achieve the corresponding functions.

[0039] Example 1

[0040] A gas inertial capacitance vibration damping device, such as Figure 1 As shown, it includes:

[0041] A hollow cylinder 6 filled with pressurized working gas;

[0042] The piston 1 connected to the cylinder 6, and the piston rod 2 that pushes the piston 1 to move horizontally;

[0043] Two parallel cylindrical gas valves 7 connected to the cylinder 6 are respectively provided with three forward gas valves 11 that increase the working gas flow rate and three reverse gas valves 10 that decrease the working gas flow rate.

[0044] A rotatable flywheel 8 located between two cylindrical gas valves 7.

[0045] In this embodiment, the cylindrical gas valve 7 divides the cylinder 6 into a first gas chamber 3, a second gas chamber 4, and a third gas chamber 5. The piston 1 and piston rod 2 are located in the first gas chamber 3. When the piston rod 2 pushes the piston 1 to move horizontally, the working gas flows within the cylinder 6, causing a change in the volume of the working gas within the cylinder 6 and generating a damping force. There is a gap between the piston 1 and the cylinder 6; when the working gas passes through the gap, it will flow and generate a nonlinear damping force. The flywheel 8 is located in the second gas chamber 4, and the rotation center of the flywheel 8 is coaxial with the central axis of the second gas chamber 4. The flywheel 8 is fixed between the two cylindrical gas valves 7 via a flywheel shaft 9, and rotates through the airflow at the outlet of the positive gas valve 11. The flywheel 8 is rotatably connected to the flywheel shaft 9 via a bearing structure. Figure 2 As shown, the flywheel 8 includes a disc rotatably connected to the flywheel shaft 9 and six blades fixed on the disc. The third gas chamber 5 is connected to the cylindrical gas valve 7 and is located on the side of the cylinder 6 away from the first gas chamber 3.

[0046] like Figures 3-6As shown, the forward gas valve 11 is a Tesla valve configured in the forward direction. The reverse gas valve 10 is a Tesla valve configured in the reverse direction. When the working gas passes through the forward gas valve 11, it splits into two paths at each return port, and then the two paths converge at the next junction, accelerating the flow. Conversely, when the working gas passes through the reverse gas valve 10, it also splits into two paths at the first junction and converges again at the second junction. However, the flow directions of the two paths are opposite, creating significant resistance and reducing the flow velocity.

[0047] The working process of the device is as follows: pressurized nitrogen is filled into the first gas chamber 3, the second gas chamber 4, and the third gas chamber 5. During operation, the piston rod 2 moves horizontally, causing the piston 1 to move horizontally as well. Simultaneously, a portion of the working gas in the first gas chamber 3 flows through the gap between the piston 1 and the cylinder 6, generating a nonlinear damping force. The horizontal movement of the piston 1 pushes the working gas in the first gas chamber 3 into the second gas chamber 4 through the cylindrical gas valve 7. The working gas flow rate is enhanced through the forward gas valve 11 and reduced through the reverse gas valve 10. The turbulence of the working gas significantly consumes the energy input to the device. The process of the working gas entering the third gas chamber 5 from the second gas chamber 4 is the same as the process of the working gas entering the second gas chamber 4 from the first gas chamber 3.

[0048] The horizontal movement of piston 1 drives the flywheel 8 to rotate through the airflow at the outlet of the forward gas valve 11, achieving an inertial mechanism at both ends and contributing a portion of the inertial volume coefficient of the device. Simultaneously, the working gas flows between the first gas chamber 3, the second gas chamber 4, and the third gas chamber 5 through the forward gas valve 11 and the reverse gas valve 10 on the cylindrical gas valve 7. Furthermore, according to Kawamata's theory of "liquid mass pumps," the flow of fluid through narrow pipes between different chambers generates a small portion of the inertial volume coefficient. Since the cross-sectional areas of the forward gas valve 11 and the reverse gas valve 10 are much smaller than the cross-sectional area of ​​the piston, they can also contribute a portion of the inertial volume coefficient.

[0049] The working mechanism of the device is as follows: the translational motion of the piston 1 compresses the working gas and pushes it into the cylindrical gas valve 7. A portion of the working gas flows through the reverse gas valve 10 within the cylindrical gas valve 7, generating a damping force and dissipating external energy input into the device. A portion of the working gas is accelerated through the forward gas valve 11, driving the flywheel 8 to rotate and generating the inertial force required by the device. This device has a simple structure, is lightweight, requires little space, and can generate stable velocity-dependent damping force and relative acceleration-dependent inertial force.

[0050] Although the present invention has been described in detail above with general descriptions, specific embodiments, and experiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A gas inertial capacitance vibration damping device, characterized in that, include: A hollow cylinder filled with pressurized working gas (6); The piston (1) connected to the cylinder (6) and the piston rod (2) that pushes the piston (1) to move horizontally. Two parallel cylindrical gas valves (7) connected to the cylinder (6) have several forward gas valves (11) that increase the flow rate of the working gas and reverse gas valves (10) that decrease the flow rate of the working gas. A rotatable flywheel (8) located between two cylindrical gas valves (7); The forward gas valve (11) is a Tesla valve that is set in the forward direction; The reverse gas valve (10) is a Tesla valve configured in reverse.

2. The gas inertial capacitance vibration damping device according to claim 1, characterized in that, The cylindrical gas valve (7) divides the cylinder (6) into a first gas chamber (3), a second gas chamber (4) and a third gas chamber (5).

3. The gas inertial capacitance vibration damping device according to claim 2, characterized in that, The piston (1) and piston rod (2) are located in the first gas chamber (3).

4. The gas inertial capacitance vibration damping device according to claim 3, characterized in that, There is a gap between the piston (1) and the cylinder (6). When the working gas passes through the gap, it will flow and generate a nonlinear damping force.

5. A gas inertial capacitance vibration damping device according to claim 2, characterized in that, The flywheel (8) is located in the second gas chamber (4), and the rotation center of the flywheel (8) is co-linear with the central axis of the second gas chamber (4).

6. A gas inertial capacitance vibration damping device according to claim 5, characterized in that, The flywheel (8) is fixed between two cylindrical gas valves (7) via a flywheel shaft (9) and rotates through the airflow at the outlet of the positive gas valve (11). The flywheel (8) is rotatably connected to the flywheel shaft (9) via a bearing structure.

7. A gas inertial capacitance vibration damping device according to claim 6, characterized in that, The flywheel (8) includes a disc rotatably connected to the flywheel shaft (9) and several blades fixed on the disc.

8. A gas inertial capacitance vibration damping device according to claim 6, characterized in that, The third gas chamber (5) is connected to the cylindrical gas valve (7) and is located on the side of the cylinder (6) away from the first gas chamber (3).

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