CN104979790B - A kind of interphase spacer spring damping device - Google Patents

Abstract

The present invention relates to a phase-to-phase spacer spring damping device, which is particularly suitable for use in overhead power transmission lines of 35kV and above, and belongs to the technical field of overhead power transmission line equipment in the power industry. It includes a spring cylinder with an upper spring and a lower spring placed inside, and an upper connector for connecting the phase-to-phase spacer composite insulator is provided on the top of the spring cylinder. The upper spring and the lower spring are arranged vertically in the spring cylinder. The spring cylinder is composed of a semi-cylinder body I and a semi-cylinder body II that are connected to each other. The bottom of the spring cylinder is provided with a through hole for passing through a piston-type shaft rod. The piston-type shaft rod includes a piston arranged at both ends of the shaft rod and a lower connector for connecting line hardware. The piston is located in the spring cylinder and between the upper spring and the lower spring, and the lower connector is located outside the spring cylinder. The present invention has a rainproof function, and can function as both a compression spring and a tension spring.

Description

A kind of interphase spacer spring damping device

technical field

The invention relates to an interphase spacer bar spring damping device, which is especially suitable for use in overhead transmission lines of 35kV and above, and belongs to the technical field of overhead transmission line equipment in the electric power industry.

Background technique

In the windy season, when the wind blows to the wires of the transmission line of the power system, a certain amount of power will be generated, which will induce a self-excited vibration of the wires and galloping. At this time, it is necessary to use a A spacer bar with insulation and mechanical strength, the spacer bar mechanically connects the wires, so that the movement of the wires is mutually restricted, so as to achieve the purpose of suppressing galloping.

At present, some anti-dancing devices and spacers have appeared on the market. For example, the patent name is: a damping type anti-dancing device, and the publication number is: 201781254U utility model patent, which discloses a damping type anti-dancing device. The utility model comprises a spacer bracket, a spring damping component and a columnar damping element connected to the spacer bracket, which can release twisting force when the wire dances, and effectively improve the tensile and compressive strength and elastic effect of the spacer bracket. This patent does not involve a sleeve-type spring shock absorber, but uses a spring. The disadvantage is that when the spring is pulled, the connection between the spring and other connecting parts is not firm, and it is prone to breakage under large-tonnage tension.

The name of the patent is: a rotary spring interphase spacer, and the publication number is: 202663062U utility model patent. The spacer of this patent is connected with the interphase insulator through a T-shaped veneer, and the spacer is equipped with a spring as an elastic structure for energy storage. , when the wires between two phases of the line gallop, through the continuous expansion and contraction of the spring, the sufficient conditions for galloping of the two-phase wires are destroyed, and the purpose of controlling the galloping of the wires is achieved. This patent does not involve a sleeve-type spring shock absorber, but uses a spring. The disadvantage is that when the spring is pulled, the connection between the spring and other connecting parts is not firm, and it is prone to breakage under large-tonnage tension.

The name of the patent is: A spring shock-absorbing interphase anti-galling spacer, and the publication number is: 103594997A utility model patent. Galloping self-excited oscillation energy, this patent does not involve the sleeve type spring shock absorber, but uses the spring, the disadvantage is that when the spring is pulled, the connection between the spring and other connecting parts is not firm, and it is easy to appear under the tension of large tonnage Fracture phenomenon.

The name of the patent is: a double-spring-end vibration-absorbing type interphase spacer, and the publication number is: 203760992U utility model patent. Absorb and reduce the self-excited oscillation energy on the line in a short time, minimize the galloping energy transmitted along the interphase spacer, and avoid further force bending of the line. The content of this patent does not further introduce the internal structure and working principle of the telescopic spring shock absorber. After a large number of Internet searches and patent inquiries, the applicant retrieved the relevant description of the telescopic spring The shock absorber is only a concept, and the specific structure of the sleeve type spring shock absorber is not disclosed in the prior art.

Contents of the invention

The purpose of the present invention is to solve the technical problems in the prior art that the spring does not have the rainproof function and is not firmly connected with other connecting parts when the spring is pulled, and provides a rainproof function, which can not only play the function of the compression spring but also play the role of spring. Interphase spacer bar spring damper to extension spring function.

The interphase spacer bar spring damping device of the present invention is realized by the following technical solutions:

An interphase spacer spring damping device, which is special in that it includes a spring cylinder 16 with an upper spring 4 and a lower spring 5 inside, and the top of the spring cylinder 16 is provided with an upper connector for connecting the composite insulator of the interphase spacer. The spring 4 and the lower spring 5 are vertically arranged in the spring barrel 16, the spring barrel 16 is composed of the half-cylinder body I2 and the half-cylinder body II3, and the bottom of the spring barrel 16 is provided with a passage hole for passing through the piston shaft 1 , the piston-type shaft 1 includes a piston 8 located at both ends of the shaft 9, a lower connector for connecting line hardware, the piston 8 is located in the spring barrel 16 and between the upper spring 4 and the lower spring 5, and the lower connector is located the outside of the spring barrel 16;

For the convenience of dismounting and the better function of stage clip and extension spring, one end of the upper spring 4 contacts the top inner wall of the spring barrel 16, the other end contacts the upper surface of the piston 8, and one end of the lower spring 5 contacts with the top inner wall of the spring barrel 16. The lower surface of the piston 8 is in contact, and the other end of the lower spring 5 is in contact with the bottom inner wall of the spring barrel 16;

In order to displace the piston shaft 1 along the axial direction, a cylindrical fixed shaft hole 15 is installed at the bottom of the spring barrel 16 through the hole, and the shaft 9 is inserted into the cylindrical fixed shaft hole 15;

In order to quickly connect with the interphase spacer composite insulator, the upper connector includes a groove-shaped flat foot 12 that is arranged on the top of the half-cylinder I2 and half-cylinder II3 and is integrated with the two. The groove-shaped flat foot 12 There are two screw holes I13 for screwing bolts, and the spring barrel 16 is connected with the interphase spacer composite insulator through bolts;

In order to quickly connect with the line fittings, the lower connector includes a flat connecting foot 10 integrally structured with the shaft 9, and the flat connecting foot 10 is provided with screw holes II11 for connecting bolts;

The rod length of the shaft rod 9 located outside the spring barrel 16 is greater than the compression amount of the upper spring 4 or the lower spring 5;

In order to quickly connect the half-cylinder body I2 and the half-cylinder body II3 into one body, both sides of the half-cylinder body I2 and half-cylinder body II3 in the height direction are provided with connecting plates 17 extending outward, and the connecting plates 17 are provided with There are a plurality of screw holes II14 for passing through the fastening bolts 6;

In order to prevent water from entering the spring barrel 16 , a rubber sealing washer 7 is installed at the bottom of the spring barrel 16 .

The interphase spacer spring damping device of the present invention has an ingenious structural design, and is installed at one or both ends of the interphase spacer during use. During the dancing process of the wire, when the interphase spacer is pulled, the lower spring will be compressed, while the upper spring will not work; when the interphase spacer is pressed, the upper spring will be compressed, and the lower spring will not work, so no matter whether the interphase spacer is pulled or pressed, the interphase spacer spring damping device of the present invention will always consume the energy generated by the line galloping, thus Reduce the galloping range of the line and play an anti-galling effect. Through the perfect combination of the elastic deformation of the upper spring and the lower spring, a new balance is automatically achieved. The double function of the tension spring avoids the defect that the spring is not firmly connected with other connecting parts when the spring is under tension, and has a good application prospect in the technical field of overhead transmission line equipment in the power industry.

Description of drawings

Fig. 1: the structural representation of interphase spacer spring damping device of the present invention;

Figure 2: Schematic diagram of the structure of the piston shaft;

Figure 3: Schematic diagram of the structure of half cylinder I and half cylinder II;

Figure 4: Schematic diagram of the structure of the upper spring and the lower spring.

In the figure: 1. Piston-type shaft rod, 2. Half cylinder body I, 3. Half cylinder body II, 4. Upper spring, 5. Lower spring, 6. Fastening bolt, 7. Rubber sealing washer, 8. Piston, 9. Shaft rod, 10. Flat connecting foot, 11. Screw hole Ⅱ, 12. Slotted flat foot, 13. Screw hole Ⅰ, 14. Screw hole Ⅱ, 15. Cylindrical fixed shaft hole, 16. Spring barrel, 17. Connecting board.

detailed description

Specific embodiments of the present invention are given below in conjunction with the accompanying drawings, which are used to further describe the present invention.

Embodiment 1: Refer to Fig. 1-4. The interphase spacer spring damping device includes a piston-type shaft rod 1 with a flat connecting foot 10 at the bottom, a semi-cylindrical body I2 and a semi-cylindrical body II3 with a groove-shaped flat foot 12 on the symmetrical top, an upper spring 4, Lower spring 5, some fastening bolts 6 and rubber sealing gasket 7 etc. Among them, the half-cylinder I2 and half-cylinder II3 are located at the top, and the piston shaft 1 is located at the bottom to avoid corrosion of the upper spring 4 and the lower spring 5 due to water ingress. The piston shaft 1 is composed of a piston 8, a cylindrical shaft 9, a flat Connecting foot 10, screw hole Ⅱ 11, half cylinder Ⅰ 2 and half cylinder Ⅱ 3 are composed of groove flat foot 12, screw hole Ⅰ 13, screw hole Ⅱ 14 and small semi-cylindrical fixed shaft hole 15, small semi-cylindrical fixed shaft hole 15 Ensure that the piston-type shaft 1 with flat feet is displaced in the axial direction, and the length of the shaft 9 located outside the spring barrel 16 is greater than the compression of the upper spring 4 or lower spring 5, in order to facilitate disassembly and achieve a better pressure spring , extension spring function, one end of the upper spring 4 is in contact with the top inner wall of the spring barrel 16, the other end is in contact with the upper surface of the piston 8, one end of the lower spring 5 is in contact with the lower surface of the piston 8, and the other end of the lower spring 5 is in contact with the lower surface of the piston 8. One end is in contact with the bottom inner wall of the spring barrel 16; in order to quickly connect with the interphase spacer composite insulator, the upper connecting piece includes a groove-shaped flat on the top of the half-cylinder I2 and half-cylinder II3 and integrated with the two. Foot 12, groove-shaped flat foot 12 is provided with two screw holes I13 for screwing bolts, and the spring tube 16 is connected with the interphase spacer composite insulator through bolts; in order to quickly connect with line fittings, the lower connection The parts include a flat connecting foot 10 with an integral structure with the shaft rod 9, and the flat connecting foot 10 is provided with screw holes II11 for connecting bolts; in order to quickly connect the half cylinder I2 and the half cylinder II3 into one body, Both sides in the height direction of the semi-cylindrical body I2 and the semi-cylindrical body II3 are provided with connecting plates 17 extending outwards, and the connecting plates 17 are provided with a plurality of screw holes II14 for passing through the fastening bolts 6 .

When in use, first place the upper spring 4, the piston shaft 1 and the lower spring 5 in the spring barrel 16 respectively, then pad the rubber sealing gasket 7, and then use the symmetrical half cylinder II3 to fit the half cylinder I2 to form A sealed cylindrical cylinder. Finally, a number of fastening bolts 6 are used to fasten the symmetrical semi-cylindrical body I2 and semi-cylindrical body II3 into one body.

The device of the present invention is installed on one or both ends of the interphase spacer. During the galloping process of the wire, when the interphase spacer is pulled, the lower spring 5 will be compressed, while the upper spring 4 will not work; when the interphase spacer is pressed, the upper The spring 4 will be compressed, and the lower spring 5 will not work. Therefore, no matter whether the interphase spacer is under tension or compression, the interphase spacer spring damping device of the present invention will always consume the energy generated by the galloping of the line, thereby reducing the amplitude of the galloping of the line and preventing galloping. Function, through the perfect combination of the elastic deformation of the upper spring and the lower spring, a new balance is automatically achieved, which can not only play the function of the compression spring, but also play the function of the extension spring, realizing the dual functions of the compression spring and the extension spring, avoiding the spring The defect that it is not firmly connected with other connecting parts when it is pulled.

The scope of protection of the present invention is not limited to the above embodiments. For example, the spring barrel with the inner spring can be cylindrical or square, and any interphase spacer rod spring damping device that is the same or equivalent to the technical solution of the invention belongs to protection scope of the present invention.

Claims (5)

1. a kind of inter-phase spacer spring damping device, it is characterised in that be placed with upper spring including inside（4）, lower spring（5） Spring strut（16）, spring strut（16）Top be provided with and be used to connect the upper connector of inter-phase spacer composite insulator, upper bullet Spring（4）With lower spring（5）In spring strut（16）Interior vertical arrangement, spring strut（16）By half cylinder I connect relatively（2）, half cylinder Ⅱ（3）Constitute, spring strut（16）Bottom be provided with and be used for through piston type axostylus axostyle（1）Pass through hole, piston type axostylus axostyle（1）Including Located at axostylus axostyle（9）The piston at two ends（8）, lower connector for connection line gold utensil, piston（8）Positioned at spring strut（16）It is interior and In upper spring（4）With lower spring（5）Between, lower connector is located at spring strut（16）Outside；

The upper spring（4）One end and spring strut（16）Top inner wall be in contact, the other end and piston（8）Upper surface phase Contact, lower spring（5）One end and piston（8）Lower surface be in contact, lower spring（5）The other end and spring strut（16）Bottom Portion's inwall is in contact；

The upper connector includes being located at half cylinder I（2）, half cylinder II（3）Top and flat with groove profile that the two is structure as a whole Pin（12）, the flat pin of groove profile（12）On offer two and be used for the screw I of bolt of spinning（13）, by bolt by spring strut（16）With Inter-phase spacer composite insulator is connected as one；

The axostylus axostyle（9）Positioned at spring strut（16）Outside bar length is more than upper spring（4）Or lower spring（5）Decrement.

2. according to a kind of inter-phase spacer spring damping device described in claim 1, it is characterised in that the spring strut（16） Bottom by being provided with tubular fixed shaft hole at hole（15）, axostylus axostyle（9）It is inserted in tubular fixed shaft hole（15）It is interior.

3. according to a kind of inter-phase spacer spring damping device described in claim 1, it is characterised in that the lower connector bag Include and axostylus axostyle（9）The flat-shaped connecting pin being structure as a whole（10）, flat-shaped connecting pin（10）It is provided with the screw for connecting bolt Ⅱ（11）.

4. according to a kind of inter-phase spacer spring damping device described in claim 1, it is characterised in that half cylinder I（2）、 Half cylinder II（3）Short transverse both sides be equipped with the connecting plate stretched out（17）, connecting plate（17）It is used for provided with multiple Through fastening bolt（6）Screw II（14）.

5. according to a kind of inter-phase spacer spring damping device described in claim 1, it is characterised in that the spring strut（16） Bottom install rubber gasket（7）.