Single-cylinder double-head high-pressure shock absorber capable of preventing wire from galloping

Abstract

The invention belongs to the field of high-pressure shock absorbers, and particularly relates to a single-barrel double-head high-pressure shock absorber capable of preventing a wire from galloping, a single head can work independently, and according to the scheme, the single-barrel double-head high-pressure shock absorber comprises an oil cylinder, floating pistons which are symmetrically arranged are installed on the inner side of the oil cylinder, and piston assemblies are installed on the sides, away from each other, of the two floating pistons; the piston assembly is in sliding connection with the inner wall of the oil cylinder, an inflation valve is fixedly installed at the bottom of the oil cylinder and communicated with the oil cylinder, guider assemblies are installed at the left end and the right end of the oil cylinder and matched with the piston assembly, and buffer springs are arranged on the left side and the right side of the inner side of the oil cylinder and matched with the piston assembly. The oil-gas separation double-end double-piston design is adopted, kinetic energy generated by wire galloping can be effectively absorbed and dispersed, the wire galloping problem is effectively solved, the kinetic energy of the wire is consumed through damping of the shock absorber and the rigidity of an internal spring, and breakage and damage of the wire due to large-amplitude movement are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of high-voltage shock absorbers, in particular to a single-tube double-head high-voltage shock absorber for preventing conductor dancing. Background Art

[0002] During the operation of the conductor, due to the influence of natural environmental factors such as strong wind, the conductor is prone to dancing. The conductor dancing will not only cause fatigue damage to the conductor itself, but may also lead to serious consequences such as conductor breakage and tower collapse, greatly affecting the safe and stable operation of the conductor system.

[0003] At present, although there are some solutions to the conductor galloping, they are all hard-connected structures and have no effective function of absorbing and consuming the conductor galloping. There are also problems such as insignificant effect, complex installation and high cost. Therefore, the present invention proposes a single-tube double-headed high-pressure shock absorber for preventing conductor galloping, which is used to solve the above problems. Summary of the invention

[0004] Based on the background technology, the existing solutions for wire galloping are all hard-connected structures, which have no effective function of absorbing and consuming the galloping of the wires, and there are also technical problems such as insignificant effect, complex installation and high cost. The present invention proposes a single-tube double-headed high-pressure shock absorber for preventing wire galloping.

[0005] The present invention proposes a single-tube double-head high-pressure shock absorber for preventing wire dancing, which includes an oil cylinder, wherein symmetrically arranged floating pistons are installed on the inner side of the oil cylinder, and piston assemblies are installed on the sides of the two floating pistons away from each other, and the piston assembly is slidably connected to the inner wall of the oil cylinder, and an inflation valve is fixedly installed on the bottom of the oil cylinder, and the inflation valve is connected to the oil cylinder, and guide assemblies are installed on the left and right ends of the oil cylinder, and the guide assembly cooperates with the piston rod, and buffer springs are provided on the left and right sides of the inner side of the oil cylinder, and the buffer springs cooperate with the piston assembly, and piston rods are fixedly installed on the sides of the two piston assemblies away from each other.

[0006] Through the above mechanism: the oil-gas separation double-head double-piston design can effectively absorb and disperse the kinetic energy generated by the dancing of the wire, so as to effectively solve the problem of wire dancing, and consume the kinetic energy of the wire through the piston assembly inside the shock absorber and the internal spring stiffness, so as to avoid the wire from breaking and being damaged due to large movement.

[0007] Preferably, high-pressure nitrogen is provided in the middle position of the inner side of the oil cylinder, and the high-pressure nitrogen cooperates with the two floating pistons. The high-pressure nitrogen compensates for the lost travel caused by the rapid movement of the piston assembly, and one air chamber compensates for the two independent shock absorbers at the same time.

[0008] Preferably, damping oil is provided on the left and right sides of the inner side of the oil cylinder. The damping oil cooperates with the piston assembly. The reciprocating motion of the piston assembly generates a damping force. The flow of the oil generates heat, which is dissipated through the surface of the oil cylinder, thereby effectively absorbing the kinetic energy of the wire.

[0009] Preferably, the ends of the two piston rods that are away from each other are both provided with threads, and the ends of the two piston rods that are away from each other are both threadedly connected with nuts.

[0010] Preferably, a pressure plate is sleeved on the ends of the two piston assemblies that are away from each other, and the pressure plate is locked and fixed with a nut to prevent the piston rod from bottoming out.

[0011] Preferably, a nitrogen inlet is provided at the bottom of the oil cylinder, and high-pressure nitrogen is injected into the air chamber from the inflation valve.

[0012] The beneficial effects of the present invention are: Highly efficient anti-dancing: The double-head design and high-pressure fluid technology can significantly reduce the dancing amplitude of the conductor, reduce the risk of conductor wear and breakage, and can be used in complex wind environments through damping adjustment; Double-head design: Both ends can work independently, and you can also design and decide which end to work first according to your needs; High-pressure nitrogen performance: The high-pressure nitrogen oil-gas distribution system can withstand greater impact force, effectively compensate for the high-speed vacuum of the oil, and prevent the shock absorber from operating at high speed and foaming quadrants; Compact structure: The single-tube double-head design makes the shock absorber structure more compact and easy to install and maintain; Long life: The exterior is treated with anti-corrosion treatment and made of high-strength wear-resistant materials, suitable for harsh outdoor environments; The oil-gas separation structure does not limit the installation direction of the shock absorber, which can avoid the damping force attenuation and oil foaming caused by the limitation of the installation direction; The present invention adopts an oil-gas separation double-head double-piston design, which can effectively absorb and disperse the kinetic energy generated by the dancing of the wire, so as to effectively solve the problem of wire dancing. The kinetic energy of the wire is consumed through the damping of the shock absorber and the internal spring stiffness, avoiding the wire from breaking and being damaged due to large movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the main cross-sectional view of the structure of a single-tube double-head high-pressure shock absorber for preventing conductor galloping proposed by the present invention; Figure 2 The present invention is a schematic diagram of the operation of a single-tube double-head high-pressure shock absorber for preventing conductor galloping.

[0014] In the figure: 1. Cylinder; 2. High-pressure nitrogen; 3. Charging valve; 4. Floating piston; 5. Piston assembly; 6. Spring; 7. Damping oil; 8. Guide assembly; 9. Buffer limit block; 10. Pressure plate; 11. Nut; 12. Piston rod. DETAILED DESCRIPTION

[0015] The present invention will be further explained below in conjunction with specific embodiments.

[0016] refer to Figure 1-2 In this embodiment, a single-tube double-head high-pressure shock absorber with anti-dancing wire is proposed, including an oil cylinder 1, a symmetrically arranged floating piston 4 is installed on the inner side of the oil cylinder 1, and a piston assembly 5 is installed on the side where the two floating pistons 4 are away from each other. The piston assembly 5 is slidably connected to the inner wall of the oil cylinder 1, and an inflation valve 3 is fixedly installed at the bottom of the oil cylinder 1. The inflation valve 3 is connected to the oil cylinder 1, and a guide 8 is installed on the left and right ends of the oil cylinder 1. The guide 8 cooperates with the piston rod 12. Buffer springs 6 are provided on the left and right sides of the inner side of the oil cylinder 1, and the buffer springs 6 cooperate with the piston assembly 5. The two piston assemblies 5 are fixedly installed with piston rods 12 on the side where the two piston assemblies 5 are away from each other.

[0017] By means of the above mechanism: the oil-gas separation double-head double-piston design can effectively absorb and disperse the kinetic energy generated by the dancing of the wire, so as to effectively solve the problem of the dancing of the wire, and consume the kinetic energy of the wire through the damping of the shock absorber and the internal spring 6, so as to avoid the wire from breaking and being damaged due to large movement.

[0018] In this embodiment, a high-pressure nitrogen 2 is provided in the middle of the inner side of the oil cylinder 1. The high-pressure nitrogen 2 cooperates with two floating pistons 4, and one air chamber compensates the shock absorbers at both ends at the same time.

[0019] In this embodiment, damping oil 7 is provided on the left and right sides of the inner side of the oil cylinder 1 , and the damping oil 7 cooperates with the piston assembly 5 to generate a damping force.

[0020] In this embodiment, threads are provided at the ends of the two piston assemblies 5 that are away from each other, and nuts 11 are threadedly connected at the ends of the two piston assemblies 5 that are away from each other.

[0021] In this embodiment, a pressure plate 10 is sleeved on the ends of the two piston assemblies 5 that are away from each other, and the pressure plate 10 is fixedly connected to a nut 11 .

[0022] In this embodiment, a nitrogen inlet is provided at the bottom of the oil cylinder 1 , and the nitrogen inlet cooperates with the inflation valve 3 .

[0023] Working principle: The external component consists of two buffer limit blocks 9, which are installed at both ends of the cylinder. The function is to limit the floating piston 4 and the piston assembly 5 to prevent the bottom. Two buffer springs 6 are installed inside, which are installed at both ends of the shock absorber. The function of the buffer spring 6 is to pull the two wires back to reset by elastic force. The function of the buffer spring 6 is to reduce the damping force of the floating piston 4 and the piston assembly 5. The final damping force is the elastic deformation force generated by the buffer spring 6 and the damping force of the floating piston 4 and the piston assembly 5 to absorb the kinetic energy of the wire together. The floating piston 4 and the piston assembly 5 converts vibration energy into heat energy through internal friction or fluid resistance and dissipates it through the oil cylinder 1, further consuming the kinetic energy of the wire. The limit structure can prevent excessive deformation of the elastic element and the damping element, ensuring the reliability and stability of the shock absorber. There are two floating pistons 4 inside, and the function of the floating piston 4 is to separate the oil and gas. High-pressure nitrogen 2 is filled between the two floating pistons 4. When the shock absorber is stretched quickly, the high-pressure nitrogen 2 quickly compensates for the oil reflux, which can avoid the attenuation of the damping force and the foaming of the oil due to the limitation of the installation direction.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A single-tube double-head high-pressure shock absorber for preventing conductor galloping, comprising a cylinder (1), characterized in that: The inner side of the oil cylinder (1) is respectively provided with symmetrically arranged floating pistons (4), and the sides of the two floating pistons (4) that are away from each other are respectively provided with piston assemblies (5), and the piston assemblies (5) are slidably connected to the inner wall of the oil cylinder (1). An air charging valve (3) is fixedly installed at the bottom of the oil cylinder (1), and the air charging valve (3) is connected to the oil cylinder (1). The left and right ends of the oil cylinder (1) are respectively provided with guide assemblies (8), and the guide assemblies (8) cooperate with the piston assemblies (5). The left and right sides of the inner side of the oil cylinder (1) are respectively provided with buffer springs (6), and the buffer springs (6) cooperate with the piston assemblies (5). The sides of the two piston assemblies (5) that are away from each other are respectively provided with piston rods (12).

2. A single-tube double-head high-pressure shock absorber for preventing conductor galloping according to claim 1, characterized in that: High-pressure nitrogen (2) is provided at the middle position inside the oil cylinder (1), and the high-pressure nitrogen (2) cooperates with two floating pistons (4).

3. A single-tube double-head high-pressure shock absorber for preventing conductor galloping according to claim 1, characterized in that: Damping oil (7) is provided on the left and right sides of the inner side of the oil cylinder (1), and the damping oil (7) cooperates with the piston assembly (5) to generate a damping force.

4. A single-tube double-head high-pressure shock absorber for preventing conductor galloping according to claim 1, characterized in that: The ends of the two piston rods (12) that are away from each other are both provided with threads, and the ends of the two piston rods (12) that are away from each other are both threadedly connected with nuts (11).

5. The single-tube double-head high-pressure shock absorber for preventing conductor galloping according to claim 1 is characterized in that: A pressing plate (10) is sleeved on the ends of the two piston rods (12) that are away from each other, and the pressing plate (10) is locked and connected to the nut (11).

6. A single-tube double-head high-pressure shock absorber for preventing conductor galloping according to claim 1, characterized in that: A nitrogen injection port is provided at the bottom of the oil cylinder (1), and nitrogen is injected from the inflation valve (3) to ensure that high-pressure nitrogen exists in the air chamber.

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