CN103726705B - Transformer substation support - Google Patents

Abstract

The invention provides a substation support, which includes a steel pipe and a connector with a coating layer on the surface, the steel pipe is covered with an FRP layer, the FRP layer includes fibers and matrix materials, and the wall thickness of the steel pipe is 6-12mm. The substation support has excellent corrosion resistance. As the anticorrosion layer of the steel pipe, the FRP layer has higher corrosion resistance than the existing general anticorrosion coatings. The cost of construction and maintenance in the whole life cycle is low, and the insulation performance and electrical performance are superior. Especially It is suitable for the construction and transformation of substation structures in environments with harsh environments, severe environmental pollution, or environments with corrosive media.

Description

A substation support

technical field

The invention relates to a bracket, in particular to a substation bracket.

Background technique

With the rapid development of the economy, the requirements for urban beautification and power supply safety are also increasing.

Substation supports are mostly reinforced concrete poles and steel pipe poles, which can meet the design service life requirements in general environments, but in areas or environments with severe corrosive media, existing substation supports are easily damaged by corrosion and cannot reach the intended service life , or require full restoration to reach the intended useful life. Especially the steel structure substation support is very easy to rust in the polluted environment or the environment with corrosive media, the effective working time of the anti-corrosion layer is short, the cycle of anti-corrosion treatment is short, and the cost of anti-corrosion treatment in the whole use process is high. At the same time, there is a high safety risk in the substation support.

Contents of the invention

In order to overcome the above-mentioned defects of the prior art, the present invention provides an FRP substation support for the corrosion resistance of the substation support. The substation bracket has superior corrosion resistance, and achieves the purpose of lower construction and maintenance costs in the whole life cycle.

For realizing above-mentioned purpose of the invention, the technical scheme that the present invention takes is:

A substation support, the support includes a steel pipe and a connector with a coating layer on the surface, and the coating includes the following components in parts by weight: 10-13 parts of epoxy resin, 22-28 parts of epoxy curing agent, and 15-19 parts of antirust pigment 16-21 parts of extender pigment, 0.3-1 part of wetting and dispersing agent, 0.1-1 part of defoamer and 23-30 parts of solvent. The steel pipe is covered with FRP layer. The FRP layer includes fibers and matrix materials. It is 6 ~ 12mm.

The antirust pigment includes the following components in parts by weight: 27-34 parts of aluminum tripolyphosphate, 27-34 parts of zinc phosphate, 13-17 parts of zinc powder and 20-26 parts of iron oxide red;

The extender pigment includes the following components in parts by weight: 30-38 parts of barium sulfate, 28-35 parts of titanium dioxide, and 30-38 parts of talcum powder;

The solvent is deionized water or distilled water;

The steel pipe is a hollow cylindrical steel pipe made of steel.

The steel pipe has a high bearing capacity, and the outer FRP layer not only has a certain bearing capacity, but also has a certain restraint effect on the steel pipe, which can increase the buckling load of the steel pipe.

Further, the fiber is one or more of aramid fiber, glass fiber or carbon fiber.

Further, the matrix material is one or more of epoxy resin, unsaturated polyester or phenolic resin.

Further, the steel pipe is wound with fibers, and the fibers are single-layer or multi-layer, and the fibers are closely arranged and evenly cover the entire outer layer of the steel pipe.

Further, the fibers are multi-layered, and the fiber diameters are different. The fiber diameter of the inner layer is larger than that of the outer layer, or the interlayer uses a large-diameter fiber and the interlayer uses a small-diameter fiber.

Further, the thickness of the FRP layer is 1-9mm.

Further, the connecting piece is a circular end plate with a thickness of 3-12 mm made of steel plate, the diameter of the end plate is the same as the outer diameter of the steel pipe, and the end plate and the steel pipe are connected by welding.

Further, the surface of the substation support is coated with an anti-corrosion coating, and the coating is one or more of epoxy resin coating, novolac epoxy coating or polyurethane anti-corrosion coating.

Another object of the present invention provides a kind of method for preparing substation support, comprises the steps:

1) Preparation of steel pipes and connectors;

2) Surface treatment of the steel pipe and the connectors after welding the connectors;

3) Paint spraying: evenly spray anti-corrosion paint on the surface of the connection part and the junction of the steel pipe and the connection part;

4) Dip the fiber through the dipping tank to wrap the fiber;

5) Curing treatment;

6) After cooling, evenly spray anti-corrosion paint on the surface of the substation support.

Owing to adopting above-mentioned technical scheme, compared with prior art, the beneficial effect of the present invention comprises:

1. The substation support in the present invention has excellent corrosion resistance, and the FRP layer is used as the anticorrosion layer of the steel pipe, which has higher corrosion resistance than the existing general anticorrosion coatings, and is especially suitable for use in harsh environments, serious environmental pollution or corrosive media The construction and transformation of substation structure under the environment;

2. The substation support in the present invention has a strong load-bearing capacity, strong compressive and flexural load-bearing performance, and no creep;

3. The substation support in the present invention is resistant to aging, and the cost of construction and maintenance in the whole life cycle is relatively low;

4. The substation support in the present invention has superior insulation performance and electrical performance;

5. The substation support in the present invention has good dimensional stability and good shock absorption performance;

6. The thermal expansion coefficient of the FRP composite material of the substation support in the present invention is similar to that of concrete, so that when the ambient temperature changes, FRP and concrete work in harmony, and no large temperature stress will be generated between the two.

Description of drawings

Fig. 1 is the sectional view of substation support;

Fig. 2 is a sectional view of the substation support;

Among them, 1-steel pipe, 2-FRP layer, 3-end plate.

detailed description

Below in conjunction with example the present invention is described in detail.

Example 1:

As shown in Figure 1, a kind of substation support of the present invention, support surface is coated with epoxy resin coating, and this support comprises steel pipe and the connector that surface has coating layer, and coating comprises following components by weight: 10 parts of epoxy resin , 22 parts of epoxy curing agent, 19 parts of antirust pigment, 16 parts of extender pigment, 0.3 part of wetting and dispersing agent, 0.1 part of defoaming agent and 30 parts of solvent.

The antirust pigment comprises the following components in parts by weight: 27 parts of aluminum tripolyphosphate, 27 parts of zinc phosphate, 13 parts of zinc powder and 20 parts of iron oxide red;

The extender pigment includes the following components in parts by weight: 30 parts of barium sulfate, 28 parts of titanium dioxide, and 38 parts of talcum powder;

The solvent is deionized water;

The steel pipe is a hollow cylindrical steel pipe made of steel. The steel pipe is covered with an FRP layer. The FRP layer includes aramid fiber and epoxy resin. The thickness of the FRP layer is 1mm, and the wall thickness of the steel pipe is 6mm. , The fibers are closely arranged and evenly covered the outer layer of the steel pipe. The connecting piece is a 3mm thick circular end plate made of steel plate. The diameter of the end plate is the same as the outer diameter of the steel pipe. The end plate and the steel pipe are welded.

Preparation of substation support: prepare steel pipes and connectors; after welding the connectors, carry out surface treatment on the steel pipes and connectors; The fiber is soaked in glue through the dipping tank, and the fiber is wound; solidified; after cooling, the surface of the substation support is evenly sprayed with anti-corrosion paint.

Example 2:

As shown in Figure 1, a substation support of the present invention includes a steel pipe and a connector with a coating on the surface,

The paint comprises the following components in parts by weight: 12 parts of epoxy resin, 25 parts of epoxy curing agent, 17 parts of antirust pigment, 19 parts of extender pigment, 0.5 part of wetting and dispersing agent, 0.4 part of defoaming agent and 28 parts of solvent.

The antirust pigment comprises the following components in parts by weight: 30 parts of aluminum tripolyphosphate, 30 parts of zinc phosphate, 15 parts of zinc powder and 24 parts of iron oxide red;

The extender pigment comprises the following components in parts by weight: 35 parts of barium sulfate, 32 parts of titanium dioxide, and 34 parts of talcum powder;

The solvent is distilled water;

The steel pipe is a hollow cylindrical steel pipe made of steel. The steel pipe is covered with an FRP layer. The FRP layer includes glass fiber and phenolic resin. The thickness of the FRP layer is 5mm, and the wall thickness of the steel pipe is 7mm. Closely arranged and evenly covered the outer layer of the steel pipe, the fiber diameter of the inner layer is larger than the fiber diameter of the outer layer, the connecting piece is a 7mm thick circular end plate made of steel plate, the diameter of the end plate is the same as the outer diameter of the steel pipe, and the end plate and the steel pipe are welded .

Preparation of substation support: prepare steel pipes and connectors; after welding the connectors, carry out surface treatment on the steel pipes and connectors; uniformly spray phenolic epoxy coating on the surface of the connectors and the joints between the steel pipes and connectors, and dip the fibers through the dipping tank Glue, winding fiber; curing treatment, cooling.

Example 3:

As shown in Figure 1, a kind of substation support of the present invention, the support surface is coated with polyurethane anticorrosion coating, and this support comprises steel pipe and the connector that surface has coating layer, and coating comprises following components by weight: 13 parts of epoxy resin, 28 parts of epoxy curing agent, 15 parts of antirust pigment, 21 parts of extender pigment, 1 part of wetting and dispersing agent, 1 part of defoaming agent and 23 parts of solvent.

The antirust pigment comprises the following components in parts by weight: 34 parts of aluminum tripolyphosphate, 34 parts of zinc phosphate, 17 parts of zinc powder and 26 parts of iron oxide red;

The extender pigment comprises the following components in parts by weight: 38 parts of barium sulfate, 35 parts of titanium dioxide, and 30 parts of talcum powder;

The solvent is distilled water;

The steel pipe is a hollow cylindrical steel pipe made of steel. The steel pipe is covered with an FRP layer. The FRP layer includes carbon fiber and unsaturated polyester. The thickness of the FRP layer is 9mm, and the wall thickness of the steel pipe is 12mm. The fibers are closely arranged and evenly cover the outer layer of the steel pipe. The fiber interlayer is made of large-diameter fibers and the interlayer is made of small-diameter fibers. The connector is a 12mm thick circular end plate made of steel plate. It is welded connection with steel pipe.

Preparation of substation support: prepare steel pipes and connectors; after welding the connectors, carry out surface treatment on the steel pipes and connectors; uniformly spray polyurethane anti-corrosion coating on the surface of the connectors and the interface between steel pipes and connectors, and dip the fibers through the dipping tank , winding fibers; curing treatment, after cooling, the surface of the substation support is evenly sprayed with polyurethane anti-corrosion coating.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the present invention can still be Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention shall be covered by the scope of the claims of the present invention.

Claims (3)

1. a kind of transformer substation support, this support includes steel pipe and surface have coat connector it is characterised in that：Transformer station props up Frame surface coats anticorrosive paint, and described coating is in epoxy coating, epoxy novolac coating or anti-corrosion polyurethane coating Plant or multiple, coating includes following parts by weight of component：10～13 parts of epoxy resin, 22～28 parts of epoxy hardener, rust resisting pigment 15～19 parts, 16～21 parts of extender pigment, 0.3～1 part of wetting dispersing agent, 0.1～1 part of defoamer and 23～30 parts of solvent, institute State steel pipe outer cladding FRP layer, described FRP layer includes fiber and matrix material, described thickness of steel pipe is 6～12mm, described steel pipe Outer winding fiber, fiber is single or multiple lift, and described fiber is multilayer, and fibre diameter is different, and inner fiber is with diameter greater than outer layer Fibre diameter or interlayer select small diameter fibers from its interlayer of large-diameter fiber；

Described FRP thickness degree is 1～9mm；

Described fiber is one or more of aramid fiber, glass fibre or carbon fiber；

Described matrix material is one or more of epoxy resin, unsaturated polyester (UP) or phenolic resin.

2. as claimed in claim 1 a kind of transformer substation support it is characterised in that：Described connector for steel plate make 3～ The thick circular end plate of 12mm, described end plate and steel pipe are to be welded to connect.

3. a kind of method preparing transformer substation support as claimed in claim 1 is it is characterised in that methods described comprises the steps：

1) steel pipe and connector are prepared；

2) after welded connections, steel pipe and connector are surface-treated；

3) coating spraying：Surface even application coat by connector and the junction of steel pipe and connector；

4) fiber is passed through steeping vat impregnation, be wound around fiber；

5) curing process；

6) by the surface even application anticorrosive paint of transformer substation support after cooling down.