CN202164623U - Universal foundation structure of 220 kV transformer substation main transformer - Google Patents

Abstract

The utility model discloses a universal foundation structure of a 220 kV transformer substation main transformer. The universal foundation structure of the 220 kV transformer substation main transformer comprises a main transformer foundation, wherein oil pits are arranged on the periphery of the main transformer foundation; scree is paved in the pits; the main transformer foundation is machined into an integrated raft foundation; a full-length embedded member is arranged on the main transformer raft foundation; the periphery of the main transformer foundation is surrounded to form the oil pit through peripheral oil pit walls; the oil pit plane employs an integrated girder-type structure; the size of the main transformer foundation plane and the size of the oil pit plane are amplified; and the full-length embedded members arranged on the main transformer foundation are uniformly distributed in the longitudinal direction. Compared with the prior art, the implementation of the regular construction procedure is partially modified so that the working drawing of the 220 kV transformer substation cannot be limited by the equipment data and the engineering building is completed two months earlier; and the universal foundation structure of the 220 kV transformer substation main transformer has strong foundation adaptability and can accelerate engineering progress and save engineering investment without removing and rebuilding civil foundation under the situation of changing arrival of main transformer equipment.

Description

The omnipotent foundation structure of 220kV transforming plant main transformer depressor

Technical field

What the present invention relates to is a kind of 220kV transformer station endoadaptation in the main transformer omnipotent foundation structure of different main transformer capacities with different main transformer manufacturer, belongs to the design field of electric substation.

Background technology

Along with the rapid development of China's economy and the raising of living standards of the people, the power grid construction of China also obtained develop rapidly in nearly 15 years.In five-year-plan from now on,, will there be a large amount of 220kV transformer stations to need to build for satisfying national productive life electricity consumption.Process for the develop rapidly of satisfying China's power grid construction; Generally improve construction quality; State Grid Corporation of China and each province Utilities Electric Co. just began to carry out the universal design of 220kV transformer station as far back as 2005; In unified thinking and way that the whole province and even the whole nation are being arranged aspect the big principle such as system scale, general layout, connection type, make early stage of 220kV transformer station can grind and make smooth advances fast with preliminary design.

But the design of the working drawing of 220kV transformer station always " is made to measure " according to electric producer data; Especially main transformer, GIS equipment etc. are as the capital equipment of large-scale substation; Domestic, external manufacturer has formed own distinctive technical interface requirement in manufacturing process for many years; Can't in short several years, let these producers revise production lines, form the general-purpose interface of domestic and international equipment producer.That is to say that the design of present working drawing must can carry out after producer's data is here; Receive the restriction of too many levels such as the bid of electric producer, electric fixtures contract negotiation, the affirmation of electric fixtures data; Often to after preliminary design is accomplished, can carry out more than 2 months, can not satisfy the social economy of develop rapidly and the requirement of power grid construction.

Through collect state net company, collect at present domestic all 5 tame 220kV main transformer manufacturers, the interfacing data of the 3 tame 220kV main transformer manufacturers that abroad often have, concluding existing 220kV main transformer basis has 2 common ground:

1, also there is the beam foundation of employing form on the general board-like basis of steel concrete of adopting, main transformer basis when adopting pile foundation, and rail beam is established in order to shelve main transformer in raft plate or grade beam top;

2, oil-stored hole is set around main transformer, oil hole size is generally than the big 1.0m of equipment outer profile size, and 50～100mm above ground level around the oil hole lays cobble and oil storage tank in the hole.Small number of devices support or main transformer jack drop point are arranged in the oil hole.

The difference on existing 220kV main transformer basis has 4 points:

1, difference has uncertainty with concrete parameter such as producer's difference, main transformer capacity is different to be used to shelve radical, length, the spacing of the rail beam on main transformer basis;

Though 2, main transformer center, position of centre of gravity are basically near the You Keng center, difference has uncertainty with concrete parameter such as producer's difference, main transformer capacity is different;

3, main transformer equipment outer profile size is different and different with concrete parameter such as producer's difference, main transformer capacity, has uncertainty;

4, the equipment supporter position of drop point in the oil hole is different and different with concrete parameter such as producer's difference, main transformer capacity, has uncertainty;

In this case, proposed the notion on the 220kV transformer station omnipotent basis of capital equipment, the omnipotent basis of 220kV transforming plant main transformer depressor is wherein important one.

Summary of the invention

The objective of the invention is to overcome the deficiency of above-mentioned existence; And a kind of omnipotent foundation structure of 220kV transforming plant main transformer depressor is provided; This omnipotent foundation structure can be through taking some easy regulation measures, satisfies the technical interface requirement of any 220kV electric pressure main transformer manufacturer easily.Thereby make the restriction that no longer receives equipment data of carrying out of 220kV transformer station working drawing design.

The objective of the invention is to accomplish through following technical scheme; It includes main transformer basis, around the main transformer basis, is provided with the oil hole, is equipped with cobble in the hole at least; Whole raft foundation is made on described main transformer basis, and this main transformer raft foundation is provided with elongated built-in fitting; Enclose described oil hole through peripheral oil hole wall around the described main transformer basis, the integral beam type structure is adopted on the You Keng plane.

Described main transformer basic plane size is all made processing and amplifying with oil hole planar dimension, and the elongated built-in fitting that on the main transformer basis, is provided with is unified vertically to be arranged.

The high raft plate form of 1.4m is made on described main transformer basis, in join the double-layer double-direction reinforcing bar, chief editor oil hole base plate adopts the thick reinforced concrete structure plate form of 300mm, and base plate extends to the scope between the whole main transformer fire wall, links to each other with other several groups of main transformers.

Be embedded with member on the base plate of described oil hole, on this member, be welded with steel pipe support, be provided with the foundation to protect cap around the steel pipe support on the base plate of described oil hole as equipment supporter.

Main transformer (main transformer) basic plane size is done certain amplification, makes whole raft plate form; Change and cut down plate face embedded part mode, can satisfy the requirement of shelving of different manufacturers rail beam through taking some easy regulation measures; Oil hole planar dimension is done certain amplification, and changes the whole way of beam and slab type into, satisfies equipment supporter drop point in the oil hole through embedded part mode on the base plate of oil hole.

The basic plane size is amplified the main transformer center that can solve, position of centre of gravity is different because of producer, capacity parameter; The difference that elongated embedded part can solve different main transformer attachment rail radicals, length, spacing is established in the raft slab foundation; Oil hole planar dimension amplifies, the whole drop point that can solve main transformer equipment outer profile size difference and oil hole equipment supporter that waters of base plate beam slab.

The present invention compared with prior art through the local improvement procedure of capital construction, makes the restriction that does not receive equipment data of carrying out of 220kV transformer station working drawing design, can do sth. in advance the engineering construction progress more than 2 months; And basic compliance is strong, when running into situation such as main transformer equipment arrival change, need not foundation of civil work and removes and rebuild, and can speed up the work, and practices thrift construction investment.

Description of drawings

Fig. 1 is a main transformer general basic plan view of the present invention.

Fig. 2 is a main transformer general basic sectional drawing of the present invention.

The specific embodiment

To combine below accompanying drawing to the present invention make detailed introduction: Fig. 1, shown in 2; The present invention includes main transformer basis 1; Around main transformer basis 1, be provided with oil hole 2; At least be equipped with cobble 3 in the hole, whole raft foundation is made on described main transformer basis 1, and this main transformer raft foundation is provided with elongated built-in fitting 4; Enclose described oil hole 2 through peripheral oil hole wall 5 around the described main transformer basis 1, the integral beam type structure is adopted on 2 planes, oil hole.

Described main transformer basis 1 planar dimension is cheated planar dimension with oil and is all made processing and amplifying, the elongated built-in fitting 4 unified vertically layouts that on main transformer basis 1, are provided with.

The high raft plate form of 1.4m is made on described main transformer basis 1, in join the double-layer double-direction reinforcing bar, main transformer oil hole 2 base plates adopt the thick reinforced concrete structure plate form of 300mm, and base plate extends to the scope between the whole main transformer fire wall, link to each other with other several groups of main transformers.

Be embedded with member on 2 base plates of described oil hole, on this member, be welded with steel pipe support as equipment supporter, on the base plate of described oil hole steel pipe support around made the foundation to protect cap.

The present invention mainly is through the analysis to figure of main transformer foundation construction in the past and main transformer producer data; Found that all main transformer sole plates are raft plate form, rail beam is established at the top, and the radical of rail beam and spacing are according to producer's equipment data decision; What general basic will solve is exactly the uncertainty of rail beam quantity and spacing; General basic changes former top bar shaped rail beam into whole slab foundation exactly, on planar dimension, does certain amplification simultaneously, can satisfy the arrangement of domestic manufacturer's equipment; Main transformer basis in the past; All be on the bar shaped rail beam, built-in fitting to be set, or arrange usually, or one one block gap is arranged; General basic need solve the versatility of main transformer mounting points position; With the built-in fitting along lateral arrangement of former corresponding top equipment, change unified layout longitudinally into, the arrangement of equipment all has reliable tie point like this.

Visible by figure: that the high raft plate form of 1.4m is made on main transformer basis 1; In join the double-layer double-direction reinforcing bar; Main transformer oil hole base plate adopts the thick reinforced concrete structure plate form of 300mm, and base plate extends to the scope between the whole main transformer fire wall, links to each other with other several groups of main transformers.This general basic has designed last 2 groups of main transformers same period, and the main transformer basis that other one group of current period does not go up is not built, and oil hole base plate extends till 2 groups of fire walls between the main transformer, does not go up main transformer place reservation joint bar and also protects with the C15 plain concrete.Between base plate absolute altitude place, oil hole is with main transformer basis and fire wall foundation platform, draw grade beam to guarantee integral rigidity.The pre-buried vertically common band steel in top, main transformer basis, every 1m establishes one, to satisfy equipment requirements.

Equipment supporter around the main transformer is not done the basis in addition, and directly pre-buried embedded part on the base plate of oil hole is welded in steel pipe support on the embedded part, and makees the foundation to protect cap around the steel pipe in the bottom.

Through measuring and calculating, the not ultra design indicator limit of the target of budgetary estimate of present main transformer general basic skill warp.

Claims (4)

1. the omnipotent foundation structure of a 220kV transforming plant main transformer depressor; It includes main transformer basis; Around the main transformer basis, be provided with the oil hole; At least be equipped with cobble in the hole, it is characterized in that described main transformer basis makes whole raft foundation, this main transformer raft foundation is provided with elongated built-in fitting; Enclose described oil hole through peripheral oil hole wall around the described main transformer basis, the integral beam type structure is adopted on the You Keng plane.

2. the omnipotent foundation structure of 220kV transforming plant main transformer depressor according to claim 1 is characterized in that described main transformer basic plane size and oil hole planar dimension all make processing and amplifying, and the elongated built-in fitting that on the main transformer basis, is provided with is unified vertically to be arranged.

3. the omnipotent foundation structure of 220kV transforming plant main transformer depressor according to claim 1 and 2; It is characterized in that described main transformer basis makes the high raft plate form of 1.4m; In join the double-layer double-direction reinforcing bar; Chief editor oil hole base plate adopts the thick reinforced concrete structure plate form of 300mm, and base plate extends to the scope between the whole main transformer fire wall, links to each other with other several groups of main transformers.

4. the omnipotent foundation structure of 220kV transforming plant main transformer depressor according to claim 3; It is characterized in that being embedded with member on the base plate of described oil hole; Be welded with steel pipe support as equipment supporter at this member, be provided with the foundation to protect cap around the steel pipe support on the base plate of said oil hole.

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