CN203589658U - Spring damping type interphase anti-galloping spacer - Google Patents

Abstract

The utility model belongs to the field of design, operation and maintenance of overhead transmission lines in power systems, in particular to a spring shock-absorbing interphase anti-galling spacer, which is mainly used for transmission lines with voltage levels of 66kV and above. The utility model is that the middle part of two interphase spacer insulators is connected with an anti-galling shock absorber through connecting fittings; the outer two ends of the two interphase spacer insulators are respectively connected with a wire clip gland through connecting fittings. The utility model can withstand pressure or tension, the guide rod can guide the spacer bars to move along the axial direction of the spring, and the convex buckle baffle can organize the damping spring to bear excessive tension. It can effectively improve the force distribution of the wire clip joint when the torque is increased after the wire is covered with ice, can effectively suppress the line breeze vibration and sub-gap vibration, and provide a quick release of galloping self-excited oscillation energy when galloping is caused by very bad weather conditions. significantly. It has the characteristics of simple and practical structure, convenient installation, low cost and maintenance-free, and has wide application prospects.

Description

A spring shock-absorbing type phase-to-phase anti-galling spacer

technical field

The utility model belongs to the field of design, operation and maintenance of overhead transmission lines in electric power systems, in particular to a spring shock-absorbing interphase anti-galling spacer, which is mainly used for transmission lines with voltage levels of 66kV and above.

Background technique

When the wind blows to the overhead transmission line with a non-circular cross-section due to ice coating, it will generate a certain amount of aerodynamic force, and it is easy to induce a low-frequency, large-amplitude self-excited oscillation of about 0.1-3 Hz in the line. The upper performance is that there is only one or a few half-waves in a span, which is called galloping. Galloping is extremely harmful to overhead transmission lines. It will cause line flashover, tripping, loosening and falling off of tower bolts, and in severe cases, damage to hardware and insulators, broken strands, broken wires, and even tower collapses, resulting in major power grid accidents. . Therefore, it is very necessary to take certain anti-galling measures.

Various anti-galling devices have been used in the current transmission lines, and the common ones are composite interphase spacers, which have a certain anti-galling effect. At present, these composite interphase spacers are generally connected by ordinary rod insulators and ordinary clamp fittings, which can only limit galloping to a certain extent, and are not effective in suppressing wind vibration and sub-gap vibration. When the weather conditions are very bad, once the line gallop occurs, the ordinary composite interphase spacer lacks a way to release the line gallop energy, and cannot quickly eliminate the line gallop. At the same time, dancing for a long time may also easily cause defects such as loose clamp bolts and crushed lines, which require regular maintenance. Such equipment has potential safety hazards, which will directly affect the safe and stable operation of transmission lines and increase maintenance costs.

Contents of the invention

In order to overcome the defects existing in the prior art, the utility model provides a spring shock-absorbing interphase anti-galling spacer, the purpose of which is to effectively suppress line galloping and sub-gap oscillation and provide quick release when galloping is caused by very bad weather conditions. The way to dance energy, so as to ensure the safe and stable operation of the power system and reduce operation and maintenance costs.

In order to achieve the above-mentioned purpose of the invention, the technical solution adopted by the utility model is as follows:

A spring shock-absorbing interphase anti-galling spacer, which is connected to the anti-gallop shock absorber through connecting fittings in the middle of two interphase spacer insulators; the outer two ends of the two interphase spacer insulators are respectively pressed by connecting fittings and wire clamps. The cover is attached.

The wire clip gland is respectively provided with a double ear structure of the wire clip gland or a single ear structure of the connecting fitting.

The anti-swinging shock absorber is located at the ends of the two interphase spacer bar insulators.

The anti-galling shock absorber is provided with a guide rod with a convex buckle baffle in the shock absorber sleeve shell, a damping spring is set on the guide rod, and one end of the guide rod is connected with a shock absorber sleeve anti-icing A damping sealing rubber pad is provided between the water cover, the shock absorber sleeve shell and the anti-icing water cover of the shock absorber sleeve; the two ends of the shock absorber sleeve shell are respectively connected with the connecting hardware.

The radius of the shock absorber sleeve shell is smaller than the radius of the shed of the insulator.

One end of the damping spring is connected to the inner wall of the shock absorber sleeve shell, and the other end of the damping spring is connected to the upper part of the convex buckle baffle plate on the guide rod.

The convex buckle baffle is circular, and its radius is smaller than the inner diameter of the shock-absorbing damping spring. the

The utility model is a spring shock-absorbing type interphase anti-galling spacer. Its effective effect is: the utility model adopts a damping spring shock-absorbing structure, and the damping spring has a large expansion space in the shock absorber sleeve shell, which can withstand Pressure or tension, the guide rod can guide the interphase spacers to move along the axial direction of the spring, and the convex buckle baffle can prevent the damping spring from bearing excessive tension. The damping spring shock absorbing structure can effectively improve the force distribution of the wire clip joint when the torque increases after the wire is covered with ice, can effectively suppress the breeze vibration of the line and the vibration of the sub-gap, and provide a quick release of galloping automatically when galloping is caused by very bad weather conditions. The effect of exciting vibration energy is remarkable. At the same time, the utility model has the characteristics of simple and practical structure, convenient installation, low cost and maintenance-free, and has wide application prospects.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

Fig. 1 is the front view of the utility model;

Figure 2 is a side view of Figure 1;

Figure 3 is a top view of Figure 1;

Figure 4 is a structural schematic diagram of the anti-galling shock absorber in the utility model.

In the figure: anti-galling shock absorber 1, insulator 2, wire clamp gland 3, wire clamp fastening bolt pin 4, wire clamp fastening bolt nut 5, spacer bar fastening bolt pin 6, spacer bar fastening bolt nut 7 , connecting fittings 8, insulator umbrella skirt 9, clamp gland double-ear structure 10, connecting fittings single-ear structure 11, damping spring 12, guide rod 13, convex buckle baffle 14, shock absorber sleeve anti-icing water cover 15, shock absorber sleeve shell 16, damping sealing rubber pad 17.

Detailed ways

The utility model is a spring shock-absorbing interphase anti-galling spacer, as shown in Figures 1 to 4, the utility model includes a sleeve type anti-galling shock absorber 1, two interphase spacer insulators 2, two sets of Wire clamp gland 3, two groups of wire clamp fastening bolt pins 4 and wire clamp fastening bolt nuts 5, two groups of spacer bar fastening bolt pins 6 and spacer bar fastening bolt nuts 7 form. Specifically, the anti-galling shock absorber 1 is connected to the middle of the two interphase spacer insulators 2 through connecting fittings 8;

The clamp gland 3 is respectively provided with a double ear structure 10 of the clamp gland or a single ear structure 11 of the connecting hardware.

The anti-galling shock absorber 1 described in the utility model is provided with a guide rod 13 with a convex buckle baffle 14 in the shock absorber sleeve shell 16, and a shock absorber damping spring 12 is set on the guide rod 13, guiding One end of the rod 13 is connected with a shock absorber sleeve anti-icing water cover plate 15, and a damping sealing rubber pad 17 is arranged between the shock absorber sleeve shell 16 and the shock absorber sleeve anti-icing water cover plate 15; Both ends of the sleeve shell 16 are respectively connected with the connecting fittings 8 . One end of the shock absorber damping spring 12 is connected with the inner wall of the shock absorber sleeve shell 16 , and the other end of the shock absorber damping spring 12 is connected with the top of the convex buckle baffle plate 14 on the guide rod 13 . In a natural state, the convex buckle baffle plate 14 is located at a lower position in the middle of the shock absorber sleeve shell 16 . When the wind blows the line, the damping spring 12 can withstand pressure or tension, and is guided in the damping spring 12 by the guide rod 13, which can effectively reduce the energy of the line galloping and avoid the overall bending under force.

During specific implementation, the anti-galling shock absorber 1 described in the utility model includes a shock-absorbing damping spring 12, a guide rod 13 with a circular convex buckle baffle plate 14 whose radius is smaller than the inner diameter of the spring, and a spacer bar that can be connected with each other. The shock absorber sleeve shell 16 buckled by the connecting hardware 8, a shock absorber sleeve anti-icing water cover 15 located between the other interphase spacer connecting hardware 8 and the guide rod 13, and the shock absorber sleeve shell The damping sealing rubber pad 17 between 16 and the shock absorber sleeve anti-icing water cover plate 15, this damping sealing rubber pad 17 can effectively prevent water vapor and dirt from entering the shock absorber sleeve shell 16, avoiding the damping damping spring 12 Structural corrosion failure.

During specific implementation, the anti-galling shock absorber 1 described in the utility model can be positioned at the middle part or the end position of a spring shock-absorbing type interphase anti-gallop spacer of the utility model. The shock absorber sleeve shell 16 The radius of the cylinder is smaller than the radius of the shed 9 of the insulator, and the two ends are respectively connected with the spacer bar insulator 2 between phases.

When installing a spring shock-absorbing type interphase anti-galling spacer of the utility model, two sets of clamp glands 3 are respectively installed on the wires of the transmission line, and the clamp fastening bolt pin 4 and the clamp fastening bolt nut are used. 5 fastening, the clamp gland double ear structure 10 of the wire clamp gland 3 is connected to the interphase spacer bar to connect the metal fittings 8, the interphase spacer rods are connected to the single ear structure 11 of the fittings, and the spacer rods are used to fasten the bolt pin 6 and the spacer rod fastening screw The bolt nut 7 is fastened.

The specific implementation described above is a preferred embodiment of the present utility model, and cannot limit the present utility model. Any other changes made to deviate from the technical solution of the present utility model or other equivalent replacement methods are included in this utility model. within the scope of the new protection.

Claims (7)

1. A spring shock-absorbing interphase anti-galling spacer, which is characterized in that: the middle part of the two interphase spacer insulators (2) is connected to the anti-gallop shock absorber (1) through the connecting fitting (8); the two phases are spaced The outer two ends of the rod insulator (2) are respectively connected to the wire clamp gland (3) through connecting fittings (8). 2. A spring shock-absorbing type interphase anti-galling spacer according to claim 1, characterized in that: the clamp gland (3) is respectively provided with a wire clamp gland double-ear structure (10) or a connection Gold tool monaural structure (11). 3. A spring-shock-absorbing interphase anti-galling spacer according to claim 1, characterized in that: the anti- galloping shock absorber (1) is located at the ends of two interphase spacer insulators (2). 4. A spring shock-absorbing type interphase anti-galling spacer according to claim 1, characterized in that: the anti-galling shock absorber (1) is provided in the shock absorber sleeve shell (16) There is a guide rod (13) with a convex buckle baffle (14), a damping spring (12) is set on the guide rod (13), and one end of the guide rod (13) is connected with a shock absorber sleeve anti-icing water cover ( 15), there is a damping sealing rubber pad (17) between the shock absorber sleeve shell (16) and the anti-icing water cover plate (15) of the shock absorber sleeve (15); the two ends of the shock absorber sleeve shell (16) Connect with connecting fittings (8) respectively. 5. A spring shock-absorbing interphase anti-galling spacer according to claim 4, characterized in that: the radius of the shock absorber sleeve shell (16) is smaller than the radius of the insulator shed (9). 6. A spring damping type interphase anti-galling spacer according to claim 5, characterized in that: one end of the damping spring (12) is connected to the inner wall of the shock absorber sleeve (16), and the damping spring The other end of (12) is connected with the convex buckle baffle plate (14) top on the guide bar (13). 7. A spring shock-absorbing type interphase anti-galling spacer according to claim 5, characterized in that: the convex buckle baffle (14) is circular, and its radius is smaller than that of the shock-absorbing damping spring (12) inner diameter.

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