CN210245172U - Strut type windproof insulator - Google Patents

Abstract

The utility model belongs to the electroceramics field especially relates to a post type insulator of preventing wind, including the insulator body, be provided with the full skirt on the insulator body, insulator body upper end is provided with the unwrapping wire groove, and unwrapping wire groove both sides are provided with prevent wind the wall, and unwrapping wire groove top is provided with the dress line mouth, and the dress line mouth is less than the unwrapping wire groove, insulator body are provided with interior axle, and interior off-axial is provided with the windproof cover, and the windproof cover is the oval cylindric of cavity, prevent wind cover protrusion radius and be greater than the another side on one side, prevent wind the cover in interior rotation is connected, prevent wind to sheathe in and is provided with prevent wind full skirt, prevent wind full skirt both sides and. The wind-proof sleeve is mechanically streamlined, can rotate along with the wind direction to be streamlined direction when strong wind, reduces the resistance, reduces the damage of wind power to the insulator, prevents the insulator from being blown off by strong wind, can resist 8-10 grade strong wind, is safer and more reliable to use in strong wind region, and has long service life.

Description

Strut type windproof insulator

Technical Field

The utility model belongs to the electroceramics field especially relates to a post type windproof insulator.

Background

The post insulator is a special insulating control and can play an important role in an overhead transmission line. The early-year post insulator is mostly used for telegraph poles, and one end of a high-voltage wire connecting tower which is gradually developed is hung with a plurality of suspended insulators, so that the insulator is used for increasing creepage distance and is usually made of silica gel or ceramics, namely the insulator. The insulator plays two basic roles in an overhead transmission line, namely supporting a wire and preventing current from flowing back to the ground, and the two roles must be ensured, the insulator cannot generate flashover breakdown caused by change of environmental and electrical load conditions to fail, otherwise, the insulator can lose the function and the service life of the whole line can be damaged. One end of the high-voltage wire connection tower is hung with a plurality of disc-shaped insulators, which are made of glass or ceramic or rubber, so as to increase the creepage distance, and the insulators are called insulators. In order to prevent dirt such as floating dust from attaching to the surface of the insulator, a path is formed and is broken down by flashover at two ends of the insulator, namely creepage, the surface distance, namely creepage distance, is increased, the creepage distance along the insulating surface is called creepage distance, namely creepage distance, the creepage distance is the surface distance/the highest voltage of a system, and according to different dirt degrees, the creepage distance is generally 31 mm/kilovolt in heavily-polluted areas. A zero value insulator refers to an insulator where the potential distribution across the insulator is near zero or equal to zero in operation. Influence of zero or low value insulator: the insulation of line conductors depends on insulators, due to manufacturing defects or external effects, such as: the surface of the insulator is excessively dirty, struck by lightning and the like. The insulation performance of the insulator is continuously deteriorated, and the insulator is called a low-value or zero-value insulator when the insulation resistance is reduced or zero. The insulator is smooth, and can reduce the capacitive reactance effect between wires so as to reduce the loss of current.

Along with the construction of the ultrahigh voltage AC/DC line in China and the continuous improvement of the use requirement on the mechanical strength, the problems of the pure porcelain post insulator are more and more prominent, and the problems in the ultrahigh voltage DC converter station are more prominent and mainly expressed as follows:

①, the problem of external insulation, along with the gradual deterioration of the operating environment, the porcelain post insulator has insufficient anti-pollution flashover capacity, for extra-high voltage direct current, the pure porcelain post insulator requires a large creepage distance and structure, and the over-high post insulator is difficult to achieve strong bending resistance and anti-seismic strength.

② earthquake-resistant problem, high-voltage equipment using an electric porcelain post insulator as an insulating part, namely, electric porcelain type high-voltage equipment for short, the earthquake-resistant problem of the equipment is difficult to be well solved, in the Wenchuan earthquake of 2008, most reasons for the damage of the high-voltage equipment are the breakage of a porcelain sleeve, for an extra-high voltage direct current system, the post insulator for a smoothing reactor requires the whole height of 12m and the supporting quality of 40t, and the place of a converter station is in Yunnan Chuxiong of a frequently occurring earthquake area, so obviously, the porcelain post insulator is very difficult to meet the earthquake-resistant requirement.

③, the porcelain post insulator has great difficulty in manufacturing due to the limitations of complex process, equipment conditions, raw material quality problems and the like, and the accident situation of the porcelain post insulator is counted according to technical reasons on the basis of a large amount of research by a high-voltage post porcelain insulator accident investigation working group of the transmission and operation department of the original national power company, so as to obtain the conclusion that the post porcelain insulator is broken and the product quality reasons account for most of the porcelain post insulator.

The general topography of Xinjiang is 'three mountains sandwiching two basins', a Tarim basin is arranged between Kunlun mountains and Tianshan mountains, and a quasi-Pascal basin is arranged between Tianshan mountains and Altai mountains. The special topography makes that many places in Xinjiang are 'tuyeres' of China. The wind resources in the nine-large wind area of Xinjiang are equivalent to four half three gorges power stations. The wind is much, and the wind is urgent, so that the Xinjiang has a remarkable characteristic different from other provinces. Especially, after winter, storm snow abuses in wind gap areas, and people feel that the storm snow is not a common soul. The wind in the mouth of Alshan is very strong. The Alashan people can not say that Sinkiang cannot know how much Chinese is, and the Alashan people cannot know how much wind is, which is the most important reason. It is the chinese wind reservoir, and the top wind reservoir of china, though a very visual metaphor, it is even appropriate for the alashans mouth between alashans and barrerkshire. The Alashan has the flavor of essence, and the fifth grade and the sixth grade do not calculate the wind. The seven-grade and eight-grade are the minor winds, and the eighteen-grade major winds are also common. In Alashan, more than 180 days of a stroke of more than eight grades of gale are always blown in each year, the maximum wind speed can reach fifty-five meters per second, and the violent degree of the stroke is just more than twelve grades of typhoon. The air opening is a narrow valley land which can not be observed at a glance, is spacious and is in a vast area. It is this particular open image that allows for the large airflow that is produced by the downed northern ocean. In the years, strong energy is gathered on the way from the middle Asia to Xinjiang, and the fierce direct pushing Alashan opening is rapidly pushed to spread all around from the air opening channel in an unprecedented and powerful manner, releases and pushes the air opening channel to always push the air opening channel to a remote Pacific, and the air opening channel is converged and fused with the warm Pacific monsoon, and is like a galloping iron ride of Wan Besturn and cannot be blocked. "one year wind blows from spring to winter, and the wind blows stones to run and birds can not fly. "the special condition of the said natural balladry to form the said wind in Alashan mouth is not suitable.

In the construction process of extra-high voltage transmission engineering in the Ala mountain area in Xinjiang, the existing national standard GB/T1001.1 upright post type insulator (shown in figure 2) is poor in windproof performance, the phenomenon that an electric wire is easily blown off and the insulator is blown off exists, and the use requirement in a strong wind area cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an insulator is prevent wind to pillar type to solve above-mentioned problem, an insulator is prevent wind to pillar type, including the insulator body, be provided with the full skirt on the insulator body, insulator body upper end is provided with wire casing, wire casing both sides are provided with prevent wind wall, wire casing top is provided with the wiring mouth, the wiring mouth is less than wire casing, it is provided with the solidus cap to prevent wind the wall matching, solidus cap top is the hemisphere, solidus cap top is provided with wind speed detection portion. The wind-proof wire fixing cap can resist 8-10 grade strong wind, is safer and more reliable to use in a strong wind area, can prevent dust from being accumulated and frozen, improves safety and prolongs the service life.

Further, the lower end of the insulator body is provided with a fixing support, and the fixing support and the insulator body are provided with an adhesive. The insulator body and the fixing support are more firmly installed.

Further, the bottom of the insulator body and the joint of the fixing support are provided with gaskets, and the bottom of the fixing support is provided with fixing columns. The insulator is more firmly installed and used.

Further, the fixed column is provided with two, be provided with the stationary blade between two fixed columns. The insulator is more firmly installed on the high-voltage wire support.

Further, the inner wall of the wire releasing groove is provided with an anti-skid bulge. The antiskid bulges can reduce the sliding and friction of the electric wire, reduce the loss and prolong the service life of the insulator and the electric wire.

Furthermore, the anti-skid bulges are provided with anti-skid pads. The sliding and friction of the wire are reduced, the loss is reduced, and the service lives of the insulator and the wire are prolonged.

Further, wall threads are arranged on the outer wall of the windproof wall. The binding rope can be prevented from falling off when the high-voltage wire is bound on the top end of the insulator.

Furthermore, a compression head is arranged at the inner top of the line fixing cap, a compression pad is arranged at the lower end of the compression head, cap threads are arranged on the inner side wall of the line fixing cap, and the cap threads are matched with the wall threads. The fixed electric wire is more convenient, can test the wind speed in real time, is convenient for maintain and overhaul, increases the security, increase of service life.

Further, the insulator body is provided with an inner shaft, a windproof sleeve is arranged outside the inner shaft and is in a hollow elliptic cylinder shape, one side of the convex radius of the windproof sleeve is larger than the other side of the windproof sleeve, the windproof sleeve is rotatably connected with the inner shaft, a windproof umbrella skirt is arranged on the windproof sleeve, two sides of the windproof umbrella skirt are in an elliptic shape, and one side of the convex radius of the windproof umbrella skirt is larger than the other side of the windproof umbrella skirt. The wind-proof sleeve is in a rotatable mechanical streamline shape, can rotate along with the wind direction in strong wind to form a streamline direction, reduces resistance, reduces damage of wind power to the insulator, prevents the insulator from being blown off by the strong wind, enables pushed dust and rainwater to slide down due to the wind power of the centrifugal machine in different directions in the process that the wind-proof sleeve rotates along with the wind direction, prevents dust from being accumulated and frozen, further increases safety, and prolongs the service life of the insulator.

Furthermore, at least one umbrella skirt is respectively arranged at the upper end and the lower end of the inner shaft, and the windproof sleeve is arranged between the umbrella skirt at the upper end and the umbrella skirt at the lower end. The wind-proof sleeve is protected, and the danger that rainwater enters the wind-proof sleeve to cause high-voltage breakdown is prevented.

When the wind-proof sleeve is manufactured, firstly, a middle-strength porcelain raw material is used for manufacturing an insulator body blank with an inner shaft, the insulator body comprises an insulator body, umbrella skirts at the upper end and the lower end of the insulator body, a wire placing groove and a wind-proof wall at the upper end of the insulator body and the like, then, a glaze layer is coated on the manufactured blank, an isolation layer such as felt paper and the like is wrapped on the inner shaft, a glaze layer is further coated on the isolation layer, a blank body of the wind-proof sleeve is manufactured on the surface of the coated enamel layer, the glaze layer of the wind-proof sleeve is further coated after the blank body is manufactured, and finally, the blank body is placed in a. The enamel layer between the inner shaft and the windproof sleeve is contacted, so that the friction force is small and the rotation is flexible.

Has the advantages that:

1. the arrangement of the wire arrangement groove and the windproof wall enables the insulator to be suitable for being used in a strong wind area, the installation is convenient, 8-10-level strong wind can be resisted, the safety and the reliability are realized, and the service life is long.

2. The fixed column makes the insulator installation firm, and non-slip raised, slipmat etc. make between electric wire and the insulator not slide and friction loss, the life of extension insulator and electric wire.

3. The wire fixing cap is more convenient to fix the wires firmly, dust can be prevented from being accumulated and frozen by the hemispherical wire fixing cap, safety is improved, and the service life is prolonged.

4. The wind-proof sleeve is in a rotatable mechanical streamline shape, can rotate along with the wind direction in strong wind to form a streamline direction, reduces resistance, reduces damage of wind power to the insulator, prevents the insulator from being blown off by the strong wind, enables pushed dust and rainwater to slide down due to the wind power of the centrifugal machine in different directions in the process that the wind-proof sleeve rotates along with the wind direction, prevents dust from being accumulated and frozen, further increases safety, and prolongs the service life of the insulator.

5. The wind speed detection part on the wire fixing cap can test the wind speed in real time, and is convenient to maintain and overhaul.

6. The wind gap can be widely used in plateau and desert wind gap, places with typhoon or strong wind by seaside, and can prevent wires from falling off and the like, thereby greatly reducing the accident.

Drawings

FIG. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is a schematic cross-sectional view of a prior art national standard;

fig. 3 is a schematic view of an upper end front section of an insulator according to an embodiment of the present invention;

fig. 4 is a schematic view of a front section of a lower end of an insulator according to an embodiment of the present invention;

FIG. 5 is a schematic front sectional view of the wire fixing cap of the present invention;

FIG. 6 is a schematic front sectional view of the structure of the wind-proof cover of the present invention;

FIG. 7 is a schematic top view of the wind-proof cover of the present invention;

FIG. 8 is a diagram showing the detection results of the size, lightning strike resistance, and withstand voltage of the product according to the embodiment of the present invention;

FIG. 9 is a graph showing the bending failure stress and temperature tolerance test results of the product according to the embodiment of the present invention, wherein the insulator includes 1-an insulator body, 2-an umbrella skirt, 3-a fixing support, 4-a wire-releasing groove, 5-a wind-proof wall, 6-a wire-fixing cap, 7-a wind-proof sleeve, 11-an inner shaft, 31-an adhesive, 32-a gasket, 33-a fixing column, 34-a spring pad, 35-a fixing sheet, 36-a nut, 51-a wire-installing port, 52-an anti-slip bulge, 53-an anti-slip pad, 54-a wall thread, 61-a compression head, 62-a compression pad, 63-a cap thread, 64-a wind speed test part, and 71-a wind-proof umbrella skirt.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

As shown in the attached figure 1, the support type windproof insulator is made of medium-strength porcelain and comprises an insulator body 1, wherein an umbrella skirt 2 is arranged on the insulator body 1, a wire releasing groove 4 is formed in the upper end of the insulator body 1, windproof walls 5 are arranged on two sides of the wire releasing groove 4, a wire loading port 51 is formed above the wire releasing groove 4 and is smaller than the wire releasing groove 4, a KTH370-10 iron cap fixing support 3 is arranged at the lower end of the insulator body 1, an adhesive 31 made of 525# cement and sand washing concrete is arranged between the fixing support 3 and the insulator body 1, a felt paper gasket 32 is arranged at the joint of the bottom of the insulator body 1 and the fixing support 3, a fixing column 33 is arranged at the bottom of the fixing support 3, and an elastic gasket 34, a fixing sheet 35 and a nut 36 are matched. Firstly, the elastic pad 34 is sleeved into the fixed column 33, then the fixed column 33 is inserted into a hole position to be installed, the fixed sheet 35 is sleeved on the fixed column, the screw cap 36 is screwed, and the electric wire is placed into the wire placing groove 4 to be fixed.

The insulator manufactured in the embodiment is subjected to detection tests in fig. 8-9, and the results show that the size, lightning resistance, withstand voltage, bending failure stress and temperature tolerance degree all conform to national GB/T1001.1, GB/T21206-2007 standard, and mechanical bending failure load: 12.5kN, power frequency wet withstand voltage: 50kV, lightning impulse withstand voltage: 125kV, nominal creepage distance: 400mm, and the anti-wind and anti-wind are more than or equal to grade 8. The product is tried in the Ala mountainous area in Xinjiang, can be safely used under the condition of 8-grade strong wind, and is free from any damage. The wind-proof and wind-proof shield can be widely applied to plateau and sand mo tuyeres and places with typhoon or strong wind at seaside, can prevent wires from falling off and the like, and can greatly reduce accidents.

Example 2

In this embodiment, with reference to embodiment 1 and fig. 3 and 4, on the basis of embodiment 1, two fixing posts 33 are provided, a fixing piece 35 is provided between the two fixing posts 33, an anti-skid protrusion 52 is provided on an inner wall of the pay-off groove 4, an anti-skid pad 53 is provided on the anti-skid protrusion 52, and a wall thread 54 is provided on an outer wall of the windproof wall 5. The wires are placed into the non-slip mat 53 and fixed.

The installation of this embodiment is more firm, reduces the slip and the friction of electric wire, reduces the loss, prolongs the life of insulator and electric wire, and it is better to prevent wind the effect.

Example 3

In this embodiment, with reference to embodiment 2 and fig. 5, on the basis of embodiment 2, the windproof wall 5 is provided with a line fixing cap 6 in a matching manner, the top of the line fixing cap 6 is hemispherical, the top of the line fixing cap 6 is provided with a GT8907 type wind power monitor manufactured by shenzhen maozao technologies ltd as a wind speed detecting part 64, the top inside the line fixing cap 6 is provided with a compression head 61, the lower end of the compression head 61 is provided with a compression pad 62, the inner side wall of the line fixing cap 6 is provided with a cap thread 63, and the cap thread 63 is matched with the wall thread 54. The electric wire is put into the anti-slip mat 53, covered with the wire fixing cap 6 and screwed down.

The fixed electric wire of this embodiment is more convenient, can the real-time test wind speed, is convenient for maintain and overhaul, and the hemisphere solidus cap can prevent that the dust from piling up and freezing, increases the security, increase of service life.

Example 4

In this embodiment, with reference to embodiment 1 and fig. 6 and 7, on the basis of embodiment 1, an inner shaft 11 is provided on an insulator body 1, a windproof sleeve 7 is provided outside the inner shaft 11, the windproof sleeve 7 is in a hollow elliptic cylinder shape, one side of the convex radius of the windproof sleeve 7 is larger than the other side, the windproof sleeve 7 is rotatably connected to the inner shaft 11, a windproof shed 71 is provided on the windproof sleeve 7, both sides of the windproof shed 71 are in an elliptic shape, one side of the convex radius of the windproof shed 71 is larger than the other side, and the windproof sleeve 7 and the windproof shed 71 are made of porcelain and are directly molded during firing.

During manufacturing, firstly, a blank body of an insulator body 1 with an inner shaft 11 is manufactured by using medium-strength porcelain raw materials, the blank body comprises the insulator body 1, an umbrella skirt 2 at the upper end and the lower end of the insulator body 1, a wire laying groove 4 at the upper end of the insulator body 1, a windproof wall 5 and the like, then, a glaze layer is coated on the manufactured blank body, an isolation layer such as oil felt paper and the like is coated on the inner shaft 11, a glaze layer is further coated on the isolation layer, a blank body of the windproof sleeve 7 is manufactured on the surface of the coated enamel layer, a glaze layer of the windproof sleeve 7 is further coated after the blank body is manufactured, and finally, the blank body is calcined in a kiln, and the isolation layer in the middle. The inner shaft 11 is in contact with the enamel layer between the windproof sleeve 7, so that the friction force is small and the rotation is flexible.

The wind-proof sleeve is mechanically streamlined, can rotate to the streamlined direction along with the wind direction during strong wind, reduces the resistance, reduces the damage of wind-force to the insulator, prevents that the insulator from being blown by strong wind and cuts off.

Example 5

In this embodiment, in combination with embodiment 4, on the basis of embodiment 4, the upper end and the lower end of the inner shaft 11 are respectively provided with a shed 2, and the windproof sleeve 7 is arranged between the upper shed 2 and the lower shed 2, and is made of porcelain, and is directly molded during firing.

The wind-proof sleeve is protected, the danger that rainwater enters the wind-proof sleeve to cause high-voltage breakdown is prevented, and the use safety of the insulator is improved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims (10)

1. The utility model provides a post type insulator of preventing wind, its characterized in that, includes insulator body (1), be provided with full skirt (2) on insulator body (1), insulator body (1) upper end is provided with wire casing (4), wire casing (4) both sides are provided with prevent wind wall (5), wire casing (4) top is provided with wiring mouth (51), wiring mouth (51) are less than wire casing (4), prevent wind wall (5) matching and be provided with solidus cap (6), solidus cap (6) top is the hemisphere, solidus cap (6) top is provided with wind speed detection portion (64).

2. A post-type wind break insulator according to claim 1, wherein said insulator body (1) is provided at its lower end with a fixing bracket (3), said fixing bracket (3) and said insulator body (1) being provided with a glue (31).

3. The strut type windproof insulator according to claim 2, wherein a gasket (32) is arranged at the joint of the bottom of the insulator body (1) and the fixing support (3), and a fixing column (33) is arranged at the bottom of the fixing support (3).

4. A post-type wind break insulator according to claim 3, wherein there are two of said fixing posts (33), and a fixing piece (35) is provided between said two fixing posts (33).

5. The column type windproof insulator according to claim 1, wherein the inner wall of the wire-laying groove (4) is provided with an anti-slip bulge (52).

6. The post-type windproof insulator according to claim 5, characterized in that said anti-slip projections (52) are provided with anti-slip pads (53).

7. Post type wind break insulator according to claim 6, characterised in that said wind break wall (5) is provided with wall threads (54) on its outer wall.

8. The post-type windproof insulator according to claim 7, wherein the top of the inside of the wire-fixing cap (6) is provided with a compression head (61), the lower end of the compression head (61) is provided with a compression pad (62), the inside wall of the wire-fixing cap (6) is provided with cap threads (63), and the cap threads (63) are matched with the wall threads (54).

9. The post type windproof insulator according to any one of claims 1 to 8, wherein the insulator body (1) is provided with an inner shaft (11), a windproof sleeve (7) is arranged outside the inner shaft (11), the windproof sleeve (7) is hollow elliptic cylinder, the convex radius of the windproof sleeve (7) is larger on one side than on the other side, the windproof sleeve (7) is rotatably connected with the inner shaft (11), a windproof shed (71) is arranged on the windproof sleeve (7), both sides of the windproof shed (71) are elliptic, and the convex radius of the windproof shed (71) is larger on one side than on the other side.

10. A post-type wind break insulator according to claim 9, wherein said inner shaft (11) is provided with at least one shed (2) at each of the upper and lower ends thereof, and said wind-proof cover (7) is provided between said upper shed (2) and said lower shed (2).

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