Main transformer foundation for transformer substation

Abstract

The utility model provides a main transformer foundation for a transformer substation, which comprises a plurality of foundation beams which are arranged on a concrete cushion layer side by side, and first mounting holes are formed in the foundation beams; the multiple sets of supporting parts are arranged above the foundation beam at intervals, second mounting holes are formed in each set of supporting parts, and the positions of the second mounting holes correspond to the positions of the first mounting holes; each group of supporting parts comprises a plurality of strip-shaped buttresses which are stacked together in sequence; the connecting piece penetrates through the second mounting hole and the first mounting hole from top to bottom to connect the supporting part with the foundation beam; the foundation beams and the strip-shaped buttresses are prefabricated parts. The multiple foundation beams are arranged on the concrete cushion layer side by side, so that modular arrangement of the foundation beams is facilitated; the connecting piece penetrates through the second mounting hole and the first mounting hole to connect the supporting part with the foundation beam, so that the connecting strength of the supporting part and the connecting piece is improved; and the foundation beam and the strip-shaped buttresses are prefabricated parts, so that the construction period is shortened.

Description

Technical Field

[0001] The utility model belongs to the technical field of transformer substation equipment foundations, in particular to a main transformer foundation used in a transformer substation. Background Art

[0002] With the rapid development of the power industry, especially the rapid rise of the new energy power generation and energy storage industries, the overall scale and number of substation projects have continued to rise.

[0003] The main transformer, also known as the main transformer, is the main step-down transformer used for power transmission and transformation in a substation. It is also the core component of the substation and plays a key role in ensuring the safe and stable operation of the traction power supply system. The main transformer is installed on the main transformer foundation. Therefore, to ensure the stability and reliability of the main transformer, the construction of the main transformer foundation is crucial.

[0004] Currently, most substations' main transformer foundations are constructed using the traditional on-site concrete pouring method. The construction process involves scaffolding erection, formwork fabrication and support, steel bar fabrication and tying, concrete pouring and curing, and formwork removal. This complex construction process results in numerous steps, material waste, high labor requirements, environmental pollution, weather-related impacts, and significant difficulties in on-site quality management, making it difficult to guarantee both construction time and quality. Consequently, the present invention aims to design a technology that can shorten the construction period for main transformer foundations. Utility Model Content

[0005] The utility model provides a main transformer foundation for a transformer substation, which can shorten the construction period of the main transformer foundation.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0007] In one aspect, the present invention provides a main transformer foundation for a substation, comprising:

[0008] A plurality of foundation beams, wherein the plurality of foundation beams are arranged side by side on the concrete pad, and a first mounting hole is formed on the foundation beams;

[0009] Multiple groups of support parts, each group of support parts is spaced apart and arranged above the foundation beam, each group of support parts is formed with a second mounting hole, the second mounting hole corresponding to the position of the first mounting hole; each group of support parts includes a plurality of strip piers stacked together in sequence;

[0010] a connecting member, the connecting member passing through the second mounting hole and the first mounting hole from top to bottom to connect the supporting portion and the foundation beam together;

[0011] Wherein, the foundation beam and the strip pier are both prefabricated components.

[0012] In some embodiments of the present application, a protrusion is formed on one surface of two adjacent stacked strip-shaped piers, and a groove is formed on the other surface, and the protrusion is matched with the groove.

[0013] In some embodiments of the present application, an inner threaded sleeve is embedded in the first mounting hole, and the bottom of the connecting member is threadedly connected to the inner threaded sleeve.

[0014] In some embodiments of the present application, a recessed portion is formed at a position on the upper surface of the support portion corresponding to the second mounting hole, the connecting member extends into the recessed portion, and the connecting member does not protrude from the upper surface of the support portion.

[0015] In some embodiments of the present application, the recessed portion, the second mounting hole, and the first mounting hole are filled with grouting material.

[0016] In some embodiments of the present application, a steel plate is pre-embedded in the top of the support portion, and the steel plate is configured to fix the column angles at corresponding positions of the main transformer.

[0017] In some embodiments of the present application, the connecting member includes a steel screw or a steel bar.

[0018] In some embodiments of the present application, the support parts are provided in two, three or four groups, and the number of the strip-shaped piers in each group of the support parts is two, three or four.

[0019] In some embodiments of the present application, the strip piers and the foundation beams are both made of reinforced concrete.

[0020] In some embodiments of the present application, the length direction of the strip pier is perpendicular to the length direction of the foundation beam.

[0021] Compared with the prior art, the advantages and positive effects of the present invention are as follows: the main transformer foundation for the substation includes multiple foundation beams, multiple groups of support parts and connecting parts, and the multiple foundation beams are arranged side by side on the concrete cushion layer, which is conducive to the modular setting of the foundation beams; a first mounting hole is formed on the foundation beam, and a second mounting hole is formed on the support part, and the connecting part passes through the second mounting hole and the first mounting hole to connect the support part and the foundation beam together, thereby improving the connection strength between the support part and the connecting part; each group of support parts includes multiple strip piers stacked together in sequence, and the foundation beams and the strip piers are prefabricated components, which can be factory-produced and have controllable quality, which is conducive to ensuring the quality of the main transformer foundation; each component is assembled on site to avoid large-volume concrete pouring, which is conducive to shortening the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] Figure 1 A top view of the main transformer foundation for a substation provided by the utility model;

[0024] Figure 2 for Figure 1 Schematic diagram of the structure along AA direction;

[0025] Figure 3 for Figure 1 Schematic diagram of the structure along BB direction;

[0026] Figure 4 for Figure 3 A partial enlarged view of the middle C area;

[0027] Figure 5 A schematic diagram of the internal structure of the foundation beam for the main transformer foundation of a substation provided by the utility model;

[0028] Figure 6 This is one of the internal structure diagrams of the strip piers for the main transformer foundation of the substation provided by the utility model;

[0029] Figure 7 This is the second schematic diagram of the internal structure of the strip pier used for the main transformer foundation of the substation provided by the utility model.

[0030] Description of reference numerals:

[0031] 1. Foundation beam; 11. First mounting hole; 111. Internal threaded sleeve;

[0032] 2. Support portion; 21. Second mounting hole; 22. Strip pier; 221. Raised portion; 222. Grooved portion; 23. Recessed portion; 24. Steel plate; 241. Avoidance hole;

[0033] 3. Connectors;

[0034] 4. Concrete cushion layer. DETAILED DESCRIPTION

[0035] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] It should be noted that in the description of this utility model, terms such as "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, it should not be understood as limiting the utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0037] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; they can refer to mechanical connection or electrical connection; they can refer to direct connection or indirect connection through an intermediate medium; and they can refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0038] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0039] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but a person of ordinary skill in the art will recognize the application of other processes and / or the use of other materials.

[0040] At present, the main transformer foundation of substations is mainly constructed by on-site wet work. This method has many processes and is very likely to cause material waste. It has high requirements on the types and number of construction workers, making on-site management difficult. The construction period is long and the project quality is difficult to guarantee.

[0041] In one aspect, combined Figures 1 to 7 As shown, an embodiment of the present disclosure provides a main transformer foundation for a substation, which includes a plurality of foundation beams 1 , a plurality of support portions 2 and connectors 3 .

[0042] A plurality of foundation beams 1 are arranged side by side on the concrete cushion layer 4. According to the requirements of the equipment on the foundation bearing capacity, the plurality of foundation beams 1 are arranged at intervals or closely together.

[0043] Specifically, the foundation beam 1 is a rectangular parallelepiped structure.

[0044] Combine Figure 2 As shown, a first mounting hole 11 is formed on the foundation beam 1 along the vertical direction. The first mounting hole 11 is in the shape of a blind hole, and the opening of the first mounting hole 11 faces upward.

[0045] Multiple groups of support parts 2 are arranged at intervals above the foundation beam 1, and each group of support parts 2 is formed with a second mounting hole 21, and the position of the second mounting hole 21 corresponds to the position of the first mounting hole 11; each group of support parts 2 includes a plurality of strip piers 22 stacked together in sequence, and the plurality of strip piers 22 are stacked together in the vertical direction, and a plurality of second mounting holes 21 are formed at corresponding positions on each strip pier 22.

[0046] Exemplarily, three groups of second mounting holes 21 are formed on each strip-shaped pier 22 , and each group of second mounting holes 21 is provided with three holes.

[0047] The connecting member 3 passes through the second mounting hole 21 and the first mounting hole 11 from top to bottom to connect the support portion 2 and the foundation beam 1 together; wherein the foundation beam 1 and the strip pier 22 are both prefabricated components.

[0048] Specifically, the main transformer foundation for the substation includes multiple foundation beams 1, multiple groups of support parts 2 and connecting parts 3. The multiple foundation beams 1 are arranged side by side on the concrete cushion layer 4, which is conducive to realizing the modular setting of the foundation beams 1 and facilitating the standardization of the foundation beams 1; a first mounting hole 11 is formed on the foundation beam 1, and a second mounting hole 21 is formed on the support part 2. The connecting part 3 passes through the second mounting hole 21 and the first mounting hole 11 to connect the support part 2 and the foundation beam 1 together, thereby improving the connection strength between the support part 2 and the connecting part 3; each group of support parts 2 includes multiple strip piers 22 stacked together in sequence, and the foundation beams 1 and the strip piers 22 are prefabricated components, which can be factory-produced and have controllable quality, which is conducive to ensuring the quality of the main transformer foundation; the components are assembled on site to avoid large-volume concrete pouring, which is conducive to shortening the construction period.

[0049] In some embodiments of the present application, Figure 3 As shown, a protrusion 221 is formed on one surface of two adjacent stacked strip-shaped piers 22 , and a groove 222 is formed on the other surface, and the protrusion 221 is matched with the groove 222 .

[0050] Specifically, a protrusion 221 and a groove 222 are formed on the contact surfaces of two adjacent strip piers 22 stacked together, and the protrusion 221 is adapted to the groove 222. When the protrusion 221 is stuck in the groove 222, it is not easy for the two adjacent strip piers 22 to slip, which can ensure safety in use. At the same time, the overall load-bearing capacity of the support part 2 is improved, and the reliability is higher.

[0051] For example, combined Figure 3 As shown, among the two contacting strip piers 22 , a groove portion 222 is formed on the bottom surface of the upper strip pier 22 , and a protrusion 221 is formed on the top surface of the lower strip pier 22 , and the protrusion 221 is snapped into the groove portion 222 .

[0052] In some embodiments of the present application, an inner thread sleeve 111 is embedded in the first mounting hole 11 , and the bottom of the connector 3 is threadedly connected to the inner thread sleeve 111 .

[0053] Specifically, by embedding an inner threaded sleeve 111 in the first mounting hole 11, the bottom of the connector 3 is threadedly connected to the inner threaded sleeve 111. The inner threaded sleeve 111 has high hardness and corrosion resistance, strong bearing capacity, and can increase the connection strength.

[0054] In some embodiments of the present application, Figure 4 As shown, a recessed portion 23 is formed on the upper surface of the support portion 2 at a position corresponding to the second mounting hole 21 , and the connecting member 3 extends into the recessed portion 23 , and the connecting member 3 does not protrude from the upper surface of the support portion 2 .

[0055] Specifically, the connecting member 3 extends into the recessed portion 23 and does not protrude from the upper surface of the supporting portion 2 , thereby preventing the connecting member 3 from interfering with the installation of the main transformer equipment above the supporting portion 2 .

[0056] In some embodiments of the present application, the recessed portion 23 , the second mounting hole 21 and the first mounting hole 11 are filled with grouting material.

[0057] Specifically, by filling the recessed portion 23, the second mounting hole 21 and the first mounting hole 11 with grouting material, the grouting material can ensure the flatness of the upper surface of the support portion 2 after solidification, and can also protect the connecting member 3 and prevent the connecting member 3 from rusting.

[0058] At the same time, the grouting material fills the gaps between the connector 3 and the strip buttress 22 and the foundation beam 1 , which is beneficial to improving the connection strength between the connector 3 and the strip buttress 22 and the foundation beam 1 .

[0059] Grouting material is made of high-strength materials as aggregates, cement as binder, and supplemented with high-fluidity, micro-expansion, and anti-segregation materials. Add a certain amount of water at the construction site and stir evenly before use.

[0060] The grouting material has the characteristics of good self-flow, rapid hardening, early strength, high strength, no shrinkage, slight expansion, non-toxic, harmless, non-aging, no pollution to water quality and the surrounding environment, good self-tightness, and rust resistance. In terms of construction, it has the advantages of reliable quality, reduced costs, shortened construction period and easy use.

[0061] In some embodiments of the present application, a steel plate 24 is pre-embedded in the top of the support portion 2 , and the steel plate 24 is configured to fix the column angles at corresponding positions of the main transformer.

[0062] Specifically, by pre-embedding the steel plate 24 on the strip pier 22 at the top of the support portion 2, the steel plate 24 provides a structural basis for the installation of the main transformer, which is convenient for fixing the column angles at corresponding positions of the main transformer.

[0063] In some embodiments of the present application, an avoidance hole 241 is formed on the steel plate 24 at a position corresponding to the second mounting hole 21 to facilitate the connecting member 3 to pass through the steel plate 24 to connect the strip pier 22 and the foundation beam 1 together.

[0064] In some embodiments of the present application, the connecting member 3 includes a steel screw or a steel bar.

[0065] Specifically, the connecting member 3 includes a steel screw or a steel bar. The steel screw and the steel bar have high strength, strong bearing capacity, and flexible installation.

[0066] In some embodiments of the present application, the support parts 2 are provided in two, three or four groups, and the number of the strip-shaped piers 22 in each group of support parts 2 is two, three or four.

[0067] Specifically, each group of support parts 2 is provided with a plurality of strip piers 22, so that the support part 2 is split into a plurality of strip piers 22, and the plurality of strip piers 22 can be assembled into the support part 2 on site, which is convenient for prefabrication in the factory and reduces on-site wet operations.

[0068] For example, combined Figure 1 and Figure 3 As shown, two groups of support parts 2 are provided, and the two groups of support parts 2 are arranged at intervals, and the number of strip-shaped piers 22 in each group of support parts 2 is two.

[0069] In some embodiments of the present application, Figure 5 、 Figure 6 and Figure 7 As shown, the strip pier 22 and the foundation beam 1 are both made of reinforced concrete. Figure 5 The internal reinforcement of foundation beam 1 is shown. Figure 6 and Figure 7 The internal reinforcement of the strip pier 22 is shown.

[0070] Specifically, by making the strip pier 22 and the foundation beam 1 from reinforced concrete material, the structure has high strength and is easy to manufacture.

[0071] In some embodiments of the present application, the length direction of the strip pier 22 is perpendicular to the length direction of the foundation beam 1 .

[0072] Specifically, by arranging the strip pier 22 in a perpendicular direction to the length direction of the foundation beam 1, the integrity and regularity of the main transformer foundation can be ensured, the stress on each part of the structure can be more evenly distributed, and the overall structural strength and bearing capacity of the main transformer foundation can be improved.

[0073] Specifically, the construction process of the main transformer foundation for the substation is as follows:

[0074] In the first step, the foundation beam 1 and the strip pier 22 are prefabricated and ready for use;

[0075] The second step is to measure and lay out the lines on site, excavate the foundation pit, and construct the concrete cushion layer 4;

[0076] The third step is to transport the prefabricated foundation beam 1 and strip pier 22 to the site;

[0077] Step 4: hoist the foundation beam 1 and the strip pier 22 to appropriate positions in sequence;

[0078] Step 5: Insert the connector 3 into the second mounting hole 21 and the first mounting hole 11, thread the connector 3 into the inner threaded sleeve 111, inject grouting material into the recessed portion 23, and smooth the recessed portion 23;

[0079] Step 6: Acceptance.

[0080] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0081] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. A main transformer foundation for a substation, characterized in that: include: A plurality of foundation beams, wherein the plurality of foundation beams are arranged side by side on the concrete pad, and a first mounting hole is formed on the foundation beams; Multiple groups of support parts, each group of support parts is spaced apart and arranged above the foundation beam, each group of support parts is formed with a second mounting hole, the second mounting hole corresponding to the position of the first mounting hole; each group of support parts includes a plurality of strip piers stacked together in sequence; a connecting member, the connecting member passing through the second mounting hole and the first mounting hole from top to bottom to connect the support portion and the foundation beam together; Wherein, the foundation beam and the strip pier are both prefabricated components.

2. The main transformer foundation for a substation according to claim 1, characterized in that: A convex portion is formed on one surface of two adjacent stacked strip-shaped piers, and a concave portion is formed on the other surface, and the convex portion is matched with the concave portion.

3. The main transformer foundation for a substation according to claim 1, characterized in that: An inner thread sleeve is embedded in the first mounting hole, and the bottom of the connecting piece is threadedly connected to the inner thread sleeve.

4. The main transformer foundation for a substation according to claim 1, characterized in that: A recessed portion is formed at a position on the upper surface of the support portion corresponding to the second mounting hole, the connecting member extends into the recessed portion, and the connecting member does not protrude from the upper surface of the support portion.

5. The main transformer foundation for a substation according to claim 4, characterized in that: The recessed portion, the second mounting hole and the first mounting hole are filled with grouting material.

6. The main transformer foundation for a substation according to claim 1, characterized in that: A steel plate is pre-embedded in the top of the support portion, and the steel plate is configured to fix the column angles at corresponding positions of the main transformer.

7. The main transformer foundation for a substation according to claim 1, characterized in that: The connecting member includes a steel screw or a steel bar.

8. The main transformer foundation for a substation according to claim 1, characterized in that: The support parts are provided in two, three or four groups, and the number of the strip-shaped piers of each group of the support parts is two, three or four.

9. The main transformer foundation for a substation according to claim 1, characterized in that: The strip piers and the foundation beams are both made of reinforced concrete.

10. The main transformer foundation for a substation according to claim 1, characterized in that: The length direction of the strip pier is perpendicular to the length direction of the foundation beam.

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