Modularized intelligent monitoring power transmission conductor spacer based on inerter vibration reduction

Abstract

The invention discloses a modularized intelligent monitoring power transmission conductor spacer based on inerter vibration reduction, and the spacer comprises a conductor connection clamp which is used for clamping a power transmission conductor; the inerter vibration reduction unit is connected with the wire connecting clamp and used for absorbing energy and reducing vibration; the inerter vibration reduction unit comprises a protective shell, a flywheel, a stiffness spring, a connecting bearing and a lead screw, the flywheel is connected with the protective shell through the connecting bearing, and the stiffness spring is arranged between the end of the lead screw and the protective shell; and the insulating connecting rod is connected with the inerter vibration reduction unit and is used for connecting and supporting the spacer assembly. The device can play a role in controlling wire galloping, caused by wind-induced excitation, of the wires of the high-voltage power transmission line, and meanwhile, the inerter synergistic mechanism is introduced, so that a large vibration control effect can be output under the condition of small relative vibration deformation between the wires.

Description

Technical Field

[0001] The invention belongs to the technical field of engineering vibration control technology, and in particular relates to a modular intelligent monitoring transmission line spacer based on inertia capacity vibration reduction. Background Art

[0002] Various vibration phenomena in nature, ranging from random pulsation to earthquakes and wind vibrations, will have adverse effects on engineering structures, and in serious cases, will even affect people's production and life. Structural vibration control technology was born to deal with this threat. The use of engineering structure vibration control technology can effectively prevent and deal with the damage caused by vibration phenomena on engineering structures.

[0003] At present, the common solution to the vibration of the conductors in power transmission line projects is to install a conductor anti-vibration hammer. However, as an additional conductor vibration reduction device, the inherent mass of the anti-vibration hammer should not be too large.

[0004] The transmission line phase spacers, as a device used to maintain the phase distance between conductors, can suppress the dancing of the conductors to a certain extent.

[0005] Common transmission line spacers have both insulation performance and mechanical strength, and the mechanism for suppressing conductor dancing is to form a secondary span between transmission lines and shorten the dancing length of transmission lines. As for the relative vibration of the wires between the connection points, vibration energy dissipation can only be achieved by relying on the damping elements contained therein. However, since transmission line spacers are engineering accessories, their inherent mass size is limited by installation, which indirectly limits their damping energy dissipation effect.

[0006] At present, an adjustable anti-dancing damping spacer (publication number: CN118645945B) proposes a damping spacer clamp with an additional fixed limit clamp, but it significantly improves the overall quality of the component and is difficult to meet the wire installation requirements under certain conditions.

[0007] Therefore, how to design a wire spacer that can improve the vibration energy dissipation capacity of the wire dancing without increasing the inherent mass of the device is a problem that technical personnel in this field need to solve urgently. Summary of the invention

[0008] In order to solve the above technical problems, the present invention proposes a modular intelligent monitoring transmission line spacer based on inertia capacity vibration reduction to solve the problems existing in the above prior art.

[0009] To achieve the above object, the present invention provides a modular intelligent monitoring transmission line spacer based on inertia capacity vibration reduction, comprising:

[0010] A conductor connection clamp, used to clamp a transmission conductor;

[0011] An inertia capacity vibration reduction unit is connected to the wire connection fixture and is used for energy absorption and vibration reduction; the inertia capacity vibration reduction unit includes a protective housing, a flywheel, a stiffness spring, a connecting bearing and a lead screw, the flywheel is connected to the protective housing through the connecting bearing, and the stiffness spring is arranged between the end of the lead screw and the protective housing;

[0012] The insulating connecting rod is connected to the inertia capacity vibration reduction unit and is used to connect and support the spacer rod assembly.

[0013] Preferably, the conductor connection fixture comprises a clamping end, a rubber clamping ring and a lock; the transmission line conductor passes through the rubber clamping ring and is fastened by the clamping end and then tightened by the lock.

[0014] Preferably, the space inside the protective shell is a damping working chamber, and damping fluid is encapsulated inside the damping working chamber.

[0015] Preferably, an intelligent monitoring module is provided between the insulating connecting rod and the inertia capacity vibration reduction unit, for determining the condition of the conductor by real-time monitoring of changes in its own absolute acceleration.

[0016] Preferably, the intelligent monitoring module includes:

[0017] Absolute acceleration sensor, used to obtain absolute acceleration data;

[0018] A data analysis unit, used to determine the vibration condition of the transmission line according to the absolute acceleration data;

[0019] An early warning unit, used to generate an early warning signal when the inertia capacity vibration reduction unit is in contact with the intelligent monitoring module for a long time;

[0020] The Bluetooth data transmission unit is used to transmit the vibration condition and early warning signal of the power transmission line.

[0021] Preferably, an insulating module is provided between the wire connection fixture and the inertial capacitance vibration reduction unit, and the insulating module is used to provide an insulating environment for the inertial capacitance vibration reduction unit and the intelligent monitoring module.

[0022] Preferably, the insulating connecting rod has a cylindrical cross-section, the inner core of the insulating connecting rod comprises a glass fiber epoxy resin core rod, and the protective layer comprises a silicone rubber insulating sheath.

[0023] Preferably, a combined connection hole is provided at the center of the insulating connecting rod.

[0024] Compared with the prior art, the present invention has the following advantages and technical effects:

[0025] The present invention discloses a modular intelligent monitoring transmission line spacer based on inertia capacity vibration reduction, comprising: a conductor connection fixture for clamping the transmission line; an inertia capacity vibration reduction unit connected to the conductor connection fixture for energy absorption and vibration reduction; the inertia capacity vibration reduction unit comprises a protective housing, a flywheel, a stiffness spring, a connecting bearing and a lead screw, the flywheel is connected to the protective housing through a connecting bearing, and the stiffness spring is arranged between the end of the lead screw and the protective housing; an insulating connecting rod connected to the inertia capacity vibration reduction unit for connecting and supporting the spacer assembly. The present invention can control the conductor dancing of the high-voltage transmission line due to wind-induced excitation, and at the same time introduces an inertia capacity enhancement mechanism, so that a larger vibration control effect can be output under the condition of smaller relative vibration deformation between the conductors.

[0026] The present invention provides vibration control while retaining the use function of the traditional transmission line phase spacer, that is, fixing the distance between conductors and the sub-spacing, and reduces the inherent mass compared with the traditional damping type phase spacer, thereby achieving the purpose of lightweight transmission line vibration control. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0028] Figure 1 This is a schematic diagram of the overall structure of the spacer bar according to an embodiment of the present invention;

[0029] Figure 2 A schematic diagram of a core end portion of a spacer rod according to an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the combined installation of the spacer bars according to an embodiment of the present invention;

[0031] Among them, 1. Wire connection fixture; 11. Clamping end; 12. Rubber clamping ring; 13. Lock; 2. Inertia damping unit; 21. Protective shell; 22. Damping working chamber; 23. Flywheel; 24. Stiffness spring; 25. Connecting bearing; 26. Lead screw; 3. Insulating connecting rod; 4. Insulating module; 5. Intelligent monitoring module. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and that, although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0034] In the mechanical rotation displacement amplification mechanism, its inertial components do not need to have a large inherent mass but can generate a large "virtual mass". This mass-enhancing effect of amplifying the apparent mass achieves a lightweight design on the traditional vibration reduction system. Among the inertial vibration reduction systems, the ball screw type is currently used more frequently. Its working principle is to convert the linear motion input to the system into rotational motion through a mechanical structure to generate an inertial coefficient.

[0035] Embodiment 1

[0036] like Figure 1-2 As shown, in this embodiment, a modular intelligent monitoring transmission line spacer based on inertia capacity vibration reduction is provided, comprising:

[0037] The conductor connection clamp 1 is a clamp-type module, including a clamping end 11 and a rubber clamping ring 12. During installation, the transmission line conductor to be controlled is passed through the rubber clamping ring 12, and is fastened by the clamping end 11, and then tightened by the lock 13 to provide the conductor holding force in the working state. In addition to having a certain insulating effect, the rubber clamping ring 12 also indirectly increases the conductor holding force by increasing the friction of the contact surface, preventing the clamping end 11 from loosening, so that the entire spacer rod falls off;

[0038] The inertia damping unit 2 is the core component of the present invention. The internal components are contained in the external protective shell 21 to ensure the service life. The space inside the protective shell 21 is the damping working chamber 22, which is filled with damping liquid. The interior is in turn a lead screw 26, a flywheel 23 sleeved on the lead screw 26, a stiffness spring 24 connected to the protective shell 21 at the end of the lead screw 26, and a connecting bearing 25 connecting the flywheel 23 and the protective shell 21. When the spacer rod performs vibration reduction work, the lead screw 26 moves linearly in the inertia damping unit 2 due to the relative dancing of the clamped phase conductors. Considering that the amplitude of the conductor dancing is not large, the activity space reserved for the lead screw 26 in the inertia damping unit 2 is limited. At this time, the flywheel 23 sleeved on the outside of the lead screw 26 will convert the linear motion of the lead screw 26 into the rotational motion of the flywheel 23 according to the inertia working mechanism, and output the inertia coefficient to provide the apparent mass. The damping liquid filled in the damping working chamber 22 is rotated and stirred by the flywheel 23 to provide a damping energy dissipation effect. The damping liquid is liquid silicone oil. When the dancing amplitude between the interphase conductors is too large, the lead screw 26 will provide a certain linear stiffness under the support of the stiffness spring 24 to limit the relative dancing between the interphase conductors. At the same time, when the interphase conductors are too close to each other and electromagnetic induction generates centripetal force, the limited reserved space for the lead screw 26 will limit the further movement of the lead screw 26, providing the spacer with overall anti-deformation ability.

[0039] The inertia damping unit 2 is connected to the wire connection fixture 1 through an insulating module 4. This connection method facilitates the maintenance and replacement of components in a live working environment. In addition to providing an insulating connection function, the insulating module 4 also has a damping effect.

[0040] The insulating connecting rod 3 is formed by a glass fiber epoxy resin core rod as the inner core and a silicone rubber insulating outer skin as the protective layer, which provides space support and connection for the spacer rod as a whole. The center is reserved for a combination connection hole, which is convenient for modular combination into a vibration-damping spacer rod suitable for a variety of different split-type interphase conductor models of power transmission lines. The combination includes Figure 3 In the form shown, the specific length of the insulating connecting rod 3 can be changed according to the interphase conductor spacing to be controlled. The cross section of the insulating connecting rod 3 is circular, and the overall appearance is streamlined to reduce the impact of wind resistance.

[0041] Intelligent monitoring module 5: Intelligent monitoring module 5 determines the conductor dancing by real-time monitoring of its own absolute acceleration changes, and transmits the data to the operation and maintenance terminal through the built-in Bluetooth module. When the insulating connecting rod 3 is in contact with the inertia capacity vibration reduction unit 2 for a long time, it means that the relative position between the conductors is abnormal at this time. The intelligent monitoring module 5 will provide an early warning alarm function to remind the operation and maintenance personnel to take timely countermeasures.

[0042] The present invention achieves the following technical effects:

[0043] The modular intelligent monitoring transmission line spacer based on inertia capacity vibration reduction of this embodiment utilizes the inertia capacity enhancement mechanism, the rotating damping element, the coaxial parallel arrangement mode and the modular design concept to improve the wire galloping vibration control capability of the traditional vibration reduction spacer and maintain a relatively low inherent mass. The present invention has the characteristics of reasonable structural design, strong vibration control effect and combined multi-adaptive working conditions.

[0044] The modular design concept enables the present invention to still work when dealing with wire combinations with different split numbers. The basic model is a two-split interphase wire design, which can be adapted to three-split interphase wires and common four-split interphase wire spacers by reserving combined connection holes.

[0045] The present invention utilizes the inertia enhancement mechanism. Under the condition of high-frequency relative dancing of the conductors, a relatively large tuning mass can be provided with a small relative displacement between the conductors, thereby achieving the purpose of energy absorption and vibration reduction. In addition, the electromagnetic adsorption phenomenon between the phase conductors is taken into consideration during the design. When the present invention is shrunk to a certain size, it can provide anti-compression stiffness to resist the centripetal force borne by the traditional spacer rod.

[0046] The damping energy dissipation effect provided by the present invention, in addition to the inertia capacity vibration reduction unit module as the main damping energy dissipation module, the insulation connection module also has a damping function as a safety redundant design guarantee.

[0047] The intelligent monitoring module installed by the present invention is based on an absolute acceleration sensor as the core, with an additional Bluetooth data transmission unit. The vibration of the transmission line is judged according to the acceleration changes of the insulating spacer rod and the inertial capacitance vibration reduction unit module during operation. The signal is transmitted to the ground data collection center of the transmission line, and then the data is uniformly transmitted to the operation and maintenance terminal. When the contact time between the insulating connecting rod and the inertial capacitance vibration reduction unit module exceeds the contact time caused by the dancing of the wire under normal circumstances, which is generally 3-5 seconds, it is considered that a large amplitude dancing occurs between the wires, and the intelligent monitoring module provides an alarm function.

[0048] The cross section of each module used in the present invention is approximately a circular cross section to reduce the influence of the wind resistance of the spacer rods.

[0049] The above are only preferred specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A modular intelligent monitoring transmission line spacer based on inertia capacity vibration reduction, characterized in that: include: A conductor connection clamp, used to clamp a transmission conductor; An inertia capacity vibration reduction unit is connected to the wire connection fixture and is used for energy absorption and vibration reduction; the inertia capacity vibration reduction unit includes a protective housing, a flywheel, a stiffness spring, a connecting bearing and a lead screw, the flywheel is connected to the protective housing through the connecting bearing, and the stiffness spring is arranged between the end of the lead screw and the protective housing; The insulating connecting rod is connected to the inertia capacity vibration reduction unit and is used to connect and support the spacer rod assembly.

2. The modular intelligent monitoring transmission line spacer according to claim 1 is characterized in that: The conductor connection fixture comprises a clamping end, a rubber clamping ring and a lock; the transmission line conductor passes through the rubber clamping ring and is fastened by the clamping end and then tightened by the lock.

3. The modular intelligent monitoring transmission line spacer according to claim 1, characterized in that: The space inside the protective shell is a damping working chamber, and damping fluid is encapsulated inside the damping working chamber.

4. The modular intelligent monitoring transmission line spacer according to claim 1, characterized in that: An intelligent monitoring module is provided between the insulating connecting rod and the inertia capacity vibration reduction unit, and is used to judge the condition of the conductor by real-time monitoring of the change of its own absolute acceleration.

5. The modular intelligent monitoring transmission line spacer according to claim 4, characterized in that: The intelligent monitoring module comprises: Absolute acceleration sensor, used to obtain absolute acceleration data; A data analysis unit, used to determine the vibration condition of the transmission line according to the absolute acceleration data; An early warning unit, used to generate an early warning signal when the inertia capacity vibration reduction unit is in contact with the intelligent monitoring module for a long time; The Bluetooth data transmission unit is used to transmit the vibration condition and early warning signal of the power transmission line.

6. The modular intelligent monitoring transmission line spacer according to claim 1, characterized in that: An insulating module is arranged between the wire connection fixture and the inertia capacitance vibration reduction unit, and the insulating module is used to provide an insulating environment for the inertia capacitance vibration reduction unit and the intelligent monitoring module.

7. The modular intelligent monitoring transmission line spacer according to claim 1, characterized in that: The cross section of the insulating connecting rod is cylindrical, the inner core of the insulating connecting rod comprises a glass fiber epoxy resin core rod, and the protective layer comprises a silicone rubber insulating outer sheath.

8. The modular intelligent monitoring transmission line spacer according to claim 1, characterized in that: A combined connection hole is arranged at the center of the insulating connection rod.

Images