CN212224845U - Anti-icing type corner iron tower for power transmission line - Google Patents

Abstract

The utility model discloses an anti-icing type is corner iron tower for transmission line, including body of the tower and cross arm, the cross arm includes two horizontal carriers that from top to bottom fixedly set up in proper order at the body of the tower upper segment, horizontal carrier is the truss structure, and horizontal carrier's chord member and web member all include insulating inner core and insulating outer layer, form the intermediate layer between insulating inner core and the insulating outer layer, pack insulating filler in the intermediate layer; the tower body includes four support columns and connects the connecting rod between each support column, support column and connecting rod are the angle steel and inboard all laminating is provided with the heat pipe that is used for heating the deicing. The utility model discloses the internal surface setting of support column and connecting rod is hugged closely to the heat pipe, with the heat transfer give support column and connecting rod can eliminate adnexed ice on support column and the connecting rod fast, alleviate the tower body heavy burden, also reduce the corruption of ice and snow to the tower body, improve the mechanical strength of tower body.

Description

Anti-icing type corner iron tower for power transmission line

Technical Field

The utility model relates to a basic electric power facility, in particular to angle iron tower for anti-icing type power transmission line.

Background

In high-voltage transmission facilities, overhead lines consisting of iron towers, insulators and wires play an important role in transmission systems.

The existing iron tower structure is mainly made of various section steels, an insulator string for supporting a lead is hung on the tower, because an overhead line is exposed in the field for a long time, the overhead line is inevitably threatened by natural adverse factors such as dirt, thunder and lightning and the like in operation, when the surface of an insulator of the insulator string is polluted, the dirt dust on the surface of the insulator is wetted under meteorological conditions such as fog, dew, rain, snow and the like, and because of the action of an external voltage, the lead is grounded through the surface of the insulator, a cross arm and an iron lap to cause an electric leakage accident, and even the insulator can be caused to generate a dirt flash phenomenon to cause line tripping or cause system collapse to cause huge loss when the lead is serious; in addition, when the tower top of the iron tower or the line is struck by lightning, the generated overvoltage can easily cause insulator flashover, so that the line trips, and the safe and stable operation of the power system is threatened.

Especially in extremely cold areas, when more ice is covered on the cross arm and the tower body, potential safety hazards are caused to the iron tower, the tower body serves as the only bearing foundation of the whole iron tower, the bearing requirement on the tower body is further increased due to the increase of the ice covering amount, common iron tower collapse is caused by the fact that the burden of the tower body is increased due to the fact that the excessive ice is covered on the surface of the tower body, the ice covered on the tower body can also cause great corrosion to a steel structure of the tower body in the process of gradually melting, and the service life of the iron tower is greatly shortened.

The corner iron tower is generally used for changing the path direction of a power transmission line, has wide application range, and therefore faces the threat of the unfavorable natural conditions, and aims at the defects of the prior art, the corner iron tower needs to be improved to improve the anti-icing capability, has good anti-icing capability when operating in an extremely cold icing area, avoids the mechanical damage of a tower body, and ensures the safe, stable and energy-saving operation of a power transmission system.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an anti-icing type is corner iron tower for power transmission line, this iron tower can effectively improve anti-icing ability, has good anti-icing ability when extremely cold icing district operation, avoids the body of the tower to take place mechanical damage, ensures transmission system safety, stable, energy-conserving operation.

The utility model discloses an anti-icing type corner iron tower for transmission line, including body of the tower and cross arm, the cross arm includes that two from top to bottom are fixed in proper order and are set up the horizontal supporter in the body of the tower upper segment, horizontal supporter is the truss structure, and horizontal supporter's chord member and web member all include insulating inner core and insulating skin, form the intermediate layer between insulating inner core and the insulating skin, pack insulating filler in the intermediate layer, insulating filler is fluororesin, nanometer silica, curing agent, acetate butyl fat etc. and constitutes according to the mixture of a certain proportion, and chord member and web member pass through insulating bolt and connect, and during the use, because the cross arm adopts insulating material to make, the same type iron tower of relatively conventional, the tower weight has alleviateed 15% ~ 30%, and the face dielectric strength between wire to the iron tower ground connection increases 100% ~ 180%, and transmission line's anti-icing ability is showing and improves, has effectively ensured transmission, Stable and energy-saving operation; the tower body includes four support columns and connects the connecting rod between each support column, support column and connecting rod are angle steel and inboard and all laminate and be provided with the heat pipe that is used for heating the deicing, and the heat pipe hugs closely the internal surface setting of support column and connecting rod, and it can eliminate adnexed ice on support column and the connecting rod fast to transfer the heat for support column and connecting rod, alleviates tower body heavy burden, also reduces the corruption of ice and snow to the tower body, improves the mechanical strength of tower body.

Further, the heat conduction pipe is a round pipe or a square pipe, can adapt to high-humidity and low-temperature environments, is light in weight, corrosion-resistant, anti-aging and good in heat conduction performance, can ensure good performance under extremely cold conditions, and generally adopts a copper pipe and an alloy pipe.

Furthermore, the end of the heat conduction pipe is externally connected with a hot air source and forms air flow circulation, the air flow circulation is achieved, heat is transferred to the ice and snow on the supporting columns and the connecting rods, the ice and snow are quickly ablated, the load of the supporting columns and the connecting rods is reduced, and the mechanical strength of the tower body is improved.

Furthermore, the end of the heat conduction pipe is externally connected with a hot water source and forms water flow circulation, and the water flow circulation is achieved, so that heat is transferred to ice and snow on the supporting columns and the connecting rods, the ice and snow are quickly ablated, the load of the supporting columns and the connecting rods is reduced, and the mechanical strength of the tower body is improved.

Furthermore, the anti-freezing solution is added in the hot water source of the heat conduction pipe, and the anti-freezing solution is mainly used for preventing the heat conduction pipe from being damaged due to the fact that hot water in the heat conduction pipe freezes ice when meeting cold, or preventing water flow circulation in the heat conduction pipe from being influenced due to the fact that the hot water freezes ice.

Furthermore, the insulating inner core is made of glass fiber reinforced plastic, epoxy resin or carbon fiber, and the glass fiber reinforced plastic not only can well meet the requirements of the transverse supporter on strength, impact resistance, corrosion resistance and heat resistance, but also is easy to obtain.

Furthermore, the insulating outer layer is made of silica gel, rubber or plastics, so that an excellent insulating effect is achieved, and the elastic characteristic of the insulating outer layer is favorable for fixing the insulator string.

Utility model's beneficial effect: the utility model discloses an anti-icing type corner iron tower for transmission line, including body of the tower and cross arm, the cross arm includes two horizontal carriers that from top to bottom fix the setting in proper order in the upper segment of the body of the tower, horizontal carrier is the truss structure, and horizontal carrier's chord member and web member all include insulating inner core and insulating outer, form the intermediate layer between insulating inner core and the insulating outer, pack insulating filler in the intermediate layer, during the use, because the cross arm adopts insulating material to make, not only have light in weight, mechanical strength height, shock resistance, corrosion resistance and heat resistance characteristics such as good relatively conventional same type iron tower, but also can increase the edge face insulating strength between high tension conductor and iron tower ground connection by about 100% -180%, has effectively improved the ability that anti-pollution flashover and thunderbolt are prevented to the iron tower, ensured transmission system safety, stable, energy-conserving operation, the body of the tower includes four support columns and connects the connecting rod between each support column, the support column and the connecting rod are angle steels and are all laminated on the inner sides of the angle steels and provided with heat conduction pipes used for heating and deicing, the heat conduction pipes are tightly attached to the inner surfaces of the support column and the connecting rod, heat is transferred to the support column and the connecting rod, ice attached to the support column and the connecting rod can be rapidly eliminated, weight of the tower body is reduced, corrosion of the ice and the snow to the tower body is reduced, and mechanical strength of the tower body is improved.

Drawings

The invention is further described with reference to the following figures and examples.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the cross arm chord and web members;

FIG. 3 is a schematic cross-sectional view of a support column (connecting rod) and a heat pipe;

fig. 4 is a schematic cross-sectional view of the support posts (connecting rods) and the heat pipes.

Detailed Description

Fig. 1 is the utility model discloses a structural schematic diagram, fig. 2 is the structural schematic diagram of cross arm body chord member and web member, and fig. 3 is the cross section schematic diagram of support column (connecting rod) and heat pipe, and fig. 4 is the cross section schematic diagram of support column (connecting rod) and heat pipe, as shown in the figure: the corner iron tower for the anti-icing power transmission line comprises a tower body 1 and a cross arm, wherein the cross arm comprises two cross supports 2 which are fixedly arranged on the upper section of the tower body 1 from top to bottom, the cross supports 2 are of a truss structure, the chord members 3 and the web members 4 of the cross supports 2 respectively comprise an insulating inner core 11 and an insulating outer layer 12, an interlayer is formed between the insulating inner core 11 and the insulating outer layer 12, an insulating filler 13 is filled in the interlayer, the insulating filler 13 is a mixture formed by fluororesin, nano silicon dioxide, a curing agent, butyl acetate and the like according to a certain proportion, the chord members 3 and the web members 4 are connected through insulating bolts, when the corner iron tower is used, the tower weight is reduced by 15-30% compared with a conventional similar iron tower, the insulating strength of the edge surface between a lead and a grounding iron tower is increased by 100-180%, and the anti-icing capacity of the power transmission line is remarkably improved, the safe, stable and energy-saving operation of the power transmission system is effectively guaranteed; the tower body 1 includes four support columns 5 and connects connecting rod 6 between each support column 5, support column 5 and connecting rod 6 are angle steel and inboard all laminate and are provided with heat pipe 7 that is used for heating the deicing, and support column 5 and connecting rod 6's internal surface setting are hugged closely to heat pipe 7, with the heat transfer give support column 5 and connecting rod 6 can eliminate adnexed ice on support column 5 and the connecting rod 6 fast, alleviate tower body 1 heavy burden, also reduce the corruption of ice and snow to tower body 1, improve tower body 1's mechanical strength.

In this embodiment, the heat pipe 7 is a circular pipe or a square pipe, the heat pipe 7 can adapt to a high-humidity low-temperature environment, and has the advantages of light weight, corrosion resistance, aging resistance, good heat conductivity, and capability of ensuring good performance under an extremely cold condition, and copper pipes and alloy pipes are generally used.

In this embodiment, the end of the heat conducting pipe 7 is externally connected with a hot air source to form an air flow circulation, and the air flow circulation transfers heat to the ice and snow on the supporting columns 5 and the connecting rods 6 to melt the ice and snow quickly, thereby reducing the load of the supporting columns 5 and the connecting rods 6 and improving the mechanical strength of the tower body 1.

In this embodiment, the end of the heat conducting pipe 7 is externally connected with a hot water source to form water circulation, and the water circulation transfers heat to the ice and snow on the supporting columns 5 and the connecting rods 6 to melt the ice and snow quickly, so that the loads of the supporting columns 5 and the connecting rods 6 are reduced, and the mechanical strength of the tower body 1 is improved.

In this embodiment, the anti-freezing solution is added to the hot water source of the heat conduction pipes 7, and the anti-freezing solution is mainly used to prevent the heat conduction pipes 7 from being damaged due to the ice formed by the cold hot water in the heat conduction pipes 7 or to prevent the water flow circulation in the heat conduction pipes 7 from being affected by the ice.

In this embodiment, the insulating inner core 11 is made of glass fiber reinforced plastic, epoxy resin or carbon fiber, and the glass fiber reinforced plastic not only can well meet the requirements of the transverse supporter 2 in strength, impact resistance, corrosion resistance and heat resistance, but also is easy to obtain.

In this embodiment, the insulating outer layer 12 is made of silica gel, rubber or plastic, so as to achieve an excellent insulating effect, and the elastic property of the insulating outer layer is also beneficial to fixing the insulator string.

Tower body 1 includes four support columns 5 and connects connecting rod 6 between each support column 5, support column 5 and connecting rod 6 are angle steel and inboard and all laminate and be provided with heat pipe 7 that is used for heating the deicing, and support column 5 and connecting rod 6 are hugged closely to heat pipe 7's internal surface setting, and it can eliminate adnexed ice on support column 5 and the connecting rod 6 fast to transfer the heat for support column 5 and connecting rod 6, alleviates tower body 1 and bears a burden, also reduces the corruption of ice and snow to tower body 1, improves tower body 1's mechanical strength.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims (7)

1. The utility model provides an anti-icing type corner iron tower for power transmission line, includes body of the tower and cross arm, its characterized in that: the cross arm comprises two cross arm bodies which are fixedly arranged on the upper section of the tower body from top to bottom, each cross arm body is of a truss structure, the chord members and the web members of each cross arm body comprise insulating inner cores and insulating outer layers, an interlayer is formed between each insulating inner core and each insulating outer layer, and insulating filling agents are filled in each interlayer; the tower body includes four support columns and connects the connecting rod between each support column, support column and connecting rod are the angle steel and inboard all laminating is provided with the heat pipe that is used for heating the deicing.

2. The angle iron tower for ice-proof transmission lines according to claim 1, wherein: the heat conduction pipe is a round pipe or a square pipe.

3. The anti-icing type corner iron tower for power transmission line according to claim 2, characterized in that: the end of the heat conduction pipe is externally connected with a hot air source and forms air circulation.

4. The anti-icing type corner iron tower for power transmission line according to claim 2, characterized in that: the end of the heat conduction pipe is externally connected with a hot water source and forms water circulation.

5. The angle iron tower for ice-proof transmission lines according to claim 4, wherein: and anti-freezing solution is added into the hot water source of the heat conduction pipe.

6. The angle iron tower for ice-proof transmission lines according to claim 1, wherein: the insulating inner core is made of glass fiber reinforced plastic, epoxy resin or carbon fiber.

7. The angle iron tower for ice-proof transmission lines according to claim 6, wherein: the insulating outer layer is made of silica gel, rubber or plastics.

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