CN210827549U - Transformer installation foundation structure - Google Patents

Abstract

The utility model discloses a transformer mounting base structure, which belongs to the field of power plant transformer mounting structures and provides a transformer mounting base structure capable of improving bearing capacity, comprising a base anchor plate, a steel lattice layer and a steel backing plate, wherein the base anchor plate is anchored in a concrete layer, the surface of the base anchor plate is exposed out of the surface of the concrete layer, the steel lattice layer is laid above the concrete layer and is fixedly connected with the base anchor plate, the steel backing plate is laid above the steel lattice layer, and a transformer mounting area is arranged above the steel backing plate; the steel lattice layer is formed by connecting profile steel pieces which are arranged in a criss-cross mode. Through setting up the steel lattice layer that the one deck formed by the steel member connection, can play the homogenization effect to the transformer load with the help of steel lattice layer, and then make finally to use the load on the concrete layer to obtain homodisperse to this can improve its bearing capacity on the basis that does not change original concrete layer, with the installation that satisfies the transformer bears the weight of the requirement.

Description

Transformer installation foundation structure

Technical Field

The utility model relates to a power plant transformer mounting structure field especially relates to an installation foundation structure of power plant transformer installation usefulness.

Background

The transformer is one of the important equipments of the power plant, the weight of the equipment varies from tens to hundreds of tons, and the requirement on the installation infrastructure of the transformer is high. The traditional transformer installation is generally directly arranged on a large-volume or plate-girder concrete structure, and the concrete structure needs to be designed and constructed according to the weight of the transformer so as to meet the requirements of operation and maintenance.

In the process of transforming an old power plant, because the whole upgrading of the power plant needs to replace an old transformer, the overall dimension and the load of a new transformer are often greatly different from those of original equipment, and the arrangement positions of the new transformer can also be different, the existing transformer foundation or bearing structure is contradictory to the arrangement of the new equipment, and the bearing requirement can not be met; on the other hand, the bearing capacity of the original bearing structure is reduced due to the fact that the original bearing structure operates for years. Therefore, in the transformation process, if the transformer is directly installed on the concrete structure by simply adopting the original installation mode, the situation of safety accidents caused by insufficient bearing capacity can occur, and the defects of large interference, difficult construction, large investment and the like exist under the limitation of the operation of a power plant and the existing conditions.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem provide a can improve bearing capacity's transformer installation foundation structure.

The utility model provides a technical scheme that its technical problem adopted is: the transformer mounting foundation structure comprises a foundation anchor plate, a steel lattice layer and a steel backing plate, wherein the foundation anchor plate is anchored and arranged in a concrete layer, the surface of the foundation anchor plate is exposed out of the surface of the concrete layer, the steel lattice layer is laid above the concrete layer and fixedly connected with the foundation anchor plate, the steel backing plate is laid above the steel lattice layer, and a mounting area of a transformer is arranged above the steel backing plate; the steel lattice layer is formed by connecting profile steel pieces which are arranged in a criss-cross mode.

Further, the method comprises the following steps: and the size of the outer contour of the steel lattice layer is not smaller than that of the outer contour of the transformer along the overlooking direction.

Further, the method comprises the following steps: the section steel parts forming the steel lattice layer are I-shaped steel.

Further, the method comprises the following steps: the foundation anchor slab is anchored in the concrete layer through the embedded steel bars.

Further, the method comprises the following steps: the steel members are welded, the steel lattice layer and the foundation anchor plate are welded, and the steel backing plate and the steel lattice layer are welded.

Further, the method comprises the following steps: the oil storage tank is formed by enclosing the oil blocking bank and the peripheral edge of the steel lattice layer, a layer of reinforcing steel bar grid grate is arranged at the upper part of the oil storage tank, the outer edge of the reinforcing steel bar grid grate is lapped on the oil blocking bank, and the inner edge of the reinforcing steel bar grid grate is lapped on the steel lattice layer.

Further, the method comprises the following steps: the inner side of the oil blocking ridge is provided with a step, and the outer edge of the steel bar grid grate in lap joint with the oil blocking ridge is in lap joint with the step.

Further, the method comprises the following steps: a pebble layer is laid on the reinforcing bar grid grate.

The utility model has the advantages that: through setting up the steel lattice layer that the one deck formed by the steel member connection, can play the homogenization effect to the transformer load with the help of steel lattice layer, and then make finally to use the load on the concrete layer to obtain homodisperse to this can improve its bearing capacity on the basis that does not change original concrete layer, with the installation that satisfies the transformer bears the weight of the requirement. In addition, owing to increased between transformer and concrete layer and set up installation infrastructure, consequently the installation of transformer can hardly receive the influence of original concrete layer structure, be particularly useful for among the old power plant transformation process because of transformer model specification etc. change the back with the unmatched condition in the structural installation position of original concrete layer, can simplify the transformer installation operation degree of difficulty, improve the installation effectiveness. Additionally, the utility model discloses still through setting up corresponding oily bank of blocking and reinforcing bar net grate isotructure to the storage is collected to the oil leak of realization to the transformer, prevents the oil leak the condition of overflow everywhere.

Drawings

Fig. 1 is a top view of a transformer mounting base structure according to the present invention;

FIG. 2 is a cross-sectional view of section A-A of FIG. 1;

labeled as: the steel reinforcement cage comprises a foundation anchor plate 1, a steel lattice layer 2, a steel base plate 3, a concrete layer 4, a transformer 5, a steel part 6, a steel bar planting 7, an oil blocking ridge 8, an oil storage tank 9, a steel bar lattice grate 10, a step 11 and a pebble layer 12.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

As shown in fig. 1 and fig. 2, the transformer installation foundation structure of the present invention comprises a foundation anchor plate 1, a steel lattice layer 2 and a steel backing plate 3, wherein the foundation anchor plate 1 is anchored and arranged in a concrete layer 4, the surface of the foundation anchor plate 1 is exposed from the surface of the concrete layer 4, the steel lattice layer 2 is laid above the concrete layer 4, the steel lattice layer 2 is fixedly connected with the foundation anchor plate 1, the steel backing plate 3 is laid above the steel lattice layer 2, and an installation area of a transformer 5 is arranged above the steel backing plate 3; the steel lattice layer 2 is formed by connecting steel parts 6 which are arranged in a criss-cross mode.

The utility model discloses a set up one deck steel lattice layer 2, can convert the concentrated load of transformer 5 into the equipartition load in the certain limit by this steel lattice layer 2 to make the size of equipartition load satisfy the requirement that bears of concrete layer 4 corresponding structure. More specifically, in order to improve the load distribution effect of the steel lattice layer 2 on the transformer 5, the outer dimension of the steel lattice layer 2 along the overlooking direction is preferably set to be not smaller than the outer dimension of the transformer 5; i.e. the footprint of the steel lattice layer 2 is preferably set to be no smaller than the footprint of the transformer 5 to improve the distribution effect on the load bearing load.

The utility model provides a steel lattice layer 2 specifically can adopt 6 concatenations of shaped steel such as I-steel or H shaped steel to form to in assembling the in-process, the preferred concatenation mode that adopts vertically and horizontally staggered, as shown in figure 1. Of course, the sections 6 can be connected by welding to form an integral steel lattice layer 2. Of course, without loss of generality, when the steel section 6 is actually selected, the steel section 6 of the corresponding specification and model should be selected according to the actual bearing requirement of the transformer 5, and the self weight of the steel lattice layer 2 should be reduced as much as possible under the condition that the bearing requirement is met.

Additionally, the utility model provides a basic anchor slab 1 is on anchor and concrete layer 4 to as the installation fixed connector of steel lattice layer 2, with fixed steel lattice layer 2. Specifically, referring to fig. 2, the basic anchor plate 1 of the present invention can be anchored in the concrete layer 4 by means of the embedded steel bars 7; corresponding embedded bars 7 are anchored in the concrete layer 4, and the foundation anchor plate 1 is arranged on the surface layer close to the concrete layer 4 and is fixedly connected with the embedded bars 7. Without loss of generality, the utility model provides a steel lattice layer 2 can be directly and basic anchor slab 1 between welded connection to fixed steel lattice layer 2.

Additionally, the utility model provides a steel backing plate 3 for lay with just each layer 2 tops, its effect is for being used for direct mount transformer 5. As shown in fig. 2, the transformer 5 is directly mounted on the steel backing plate 3. Without loss of generality, some mounting structures for mounting the transformer 5, such as screw holes or rectangular holes, can be arranged on the steel backing plate 3. More specifically, the utility model provides a steel backing plate 3 can be directly and steel lattice layer 2 between welded connection to fixed steel backing plate 3.

Referring to as shown in the attached drawing 2, the utility model discloses in further can be provided with the round outside the periphery border of steel lattice layer 2 and block oily bank 8, enclose between the periphery border of blocking oily bank 8 and steel lattice layer 2 and close and form oil storage tank 9, oil storage tank 9 is for being used for collecting and storing the oil leak of transformer 5 seepage in the use to avoid the oil leak overflow everywhere. More specifically, a layer of reinforcing mesh grates 10 may be further disposed on the upper portion of the oil storage tank 9, the outer edges of the reinforcing mesh grates 10 are lapped on the oil blocking ridge 8, and the inner edges of the reinforcing mesh grates 10 are lapped on the steel mesh layer 2. By arranging the mesh reinforcement grates 10, a screen layer is formed at the upper part of the oil reservior 9, on one hand, leaked oil can be collected from the lower part conveniently, and on the other hand, a structure which is convenient to pass through can be formed above the mesh reinforcement grates 10.

More specifically, for the specific installation structure of the steel bar grid perforated strainer 10, a step 11 may be provided on the inner side of the oil bar bank 8, and the outer edge of the steel bar grid perforated strainer 10 in lap joint with the oil bar bank 8 is lap joint with the step 11.

In addition, the utility model is further provided with a pebble layer 12 laid on the reinforcing grid grate 10; the pebble layer 12 can be directly paved on the reinforcing grid grate 10.

Claims (8)

1. Transformer installation foundation structure, its characterized in that: the transformer foundation structure comprises a foundation anchor plate (1), a steel lattice layer (2) and a steel base plate (3), wherein the foundation anchor plate (1) is anchored and arranged in a concrete layer (4), the surface of the foundation anchor plate (1) is exposed out of the surface of the concrete layer (4), the steel lattice layer (2) is laid above the concrete layer (4), the steel lattice layer (2) is fixedly connected with the foundation anchor plate (1), the steel base plate (3) is laid above the steel lattice layer (2), and an installation area of a transformer (5) is arranged above the steel base plate (3); the steel lattice layer (2) is formed by connecting profile steel pieces (6) which are arranged in a criss-cross mode.

2. The transformer mounting infrastructure of claim 1, wherein: the outer contour dimension of the steel lattice layer (2) is not smaller than the outer contour dimension of the transformer (5) along the overlooking direction.

3. The transformer mounting infrastructure of claim 1, wherein: the section steel pieces (6) forming the steel lattice layer (2) are I-shaped steel.

4. The transformer mounting infrastructure of claim 1, wherein: the foundation anchor plate (1) is anchored in the concrete layer (4) through the embedded bars (7).

5. The transformer mounting infrastructure of claim 1, wherein: the steel parts (6) are welded, the steel lattice layer (2) and the foundation anchor plate (1) are welded, and the steel backing plate (3) and the steel lattice layer (2) are welded.

6. The transformer mounting infrastructure of any one of claims 1 to 5, wherein: the oil storage tank is characterized in that a circle of oil blocking ridge (8) is arranged outside the peripheral edge of the steel lattice layer (2), an oil storage tank (9) is formed by enclosing the oil blocking ridge (8) and the peripheral edge of the steel lattice layer (2), a layer of reinforcing steel bar grid grate (10) is arranged on the upper portion of the oil storage tank (9), the outer edge of the reinforcing steel bar grid grate (10) is lapped on the oil blocking ridge (8), and the inner edge of the reinforcing steel bar grid grate (10) is lapped on the steel lattice layer (2).

7. The transformer mounting infrastructure of claim 6, wherein: the inner side of the oil blocking ridge (8) is provided with a step (11), and the outer edge of the steel bar grid grate (10) in lap joint with the oil blocking ridge (8) is lapped on the step (11).

8. The transformer mounting infrastructure of claim 6, wherein: a pebble layer (12) is laid on the reinforcing mesh grate (10).

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