Box transformer substation foundation for transformer substation

Abstract

The utility model relates to the technical field of transformer substations, and provides a box transformer substation foundation for a transformer substation, which comprises an alloy frame, connecting rods are fixedly connected to corners of the alloy frame, a fixing ring is fixed at the other end of each connecting rod, and a concrete pouring plate is formed on the outer sides of the alloy frame, the connecting rods and the fixing ring in a pouring manner; the threaded columns are fixed to the corners of the top wall of the alloy frame. According to the technical scheme, the problems that in the prior art, a fixing mode that foundation bolts serve as main connecting parts of a box-type substation is adopted, due to continuous vibration generated by operation of electrical equipment in the box-type substation and frequent changes of the external environment temperature, bolts and nuts are gradually loosened, and the box-type substation is damaged are solved. In the prior art, the connection tightness between the box-type transformer station and the foundation is damaged, the overall displacement of the foundation and the box-type transformer station is easily caused, the inclination of the box-type transformer station is even possibly caused in a severe case, and the normal operation of internal electrical equipment and the safety of surrounding personnel are greatly threatened.

Description

Technical Field

[0001] This utility model relates to the field of substation technology, specifically to a box-type transformer foundation for substations. Background Technology

[0002] With the continuous development of the power industry, the application of prefabricated substations is becoming increasingly widespread. Prefabricated substations, with their advantages of small footprint, convenient installation, and high degree of integration, have become the preferred equipment for many substation constructions. The substation foundation, as a crucial supporting structure, directly affects the stability and safety of the substation's operation. In current power engineering practice, the common method for constructing prefabricated substation foundations is concrete pouring. After curing, the foundation is transported to the installation site for fixing. This foundation type can, to a certain extent, meet the load-bearing requirements of prefabricated substations and provide them with basic support.

[0003] Current methods for fixing the substation foundation to the ground are relatively simple. In most cases, during the concrete foundation construction, anchor bolts of a certain length are pre-embedded at the bottom of the foundation, and then the substation base is fastened to the anchor bolts using bolts and nuts. Some construction techniques involve laying a layer of cement mortar at the contact area between the foundation and the ground to attempt to enhance the adhesion between them. Furthermore, in some small substation projects, there is a practice of relying solely on the weight of the foundation itself and the friction with the ground to maintain the stability of the substation.

[0004] However, using anchor bolts as the primary connecting component for fixing can lead to gradual loosening of the bolts and nuts over long-term use due to continuous vibrations from the internal electrical equipment and frequent changes in ambient temperature. Once the bolts loosen, the tightness of the connection between the substation and the foundation is compromised, easily causing displacement of both the foundation and the substation as a whole. In severe cases, this can even lead to the substation tilting, posing a significant threat to the normal operation of the internal electrical equipment and the safety of surrounding personnel. Utility Model Content

[0005] This utility model proposes a prefabricated substation foundation, which solves the problem that in related technologies, prefabricated substations use anchor bolts as the main connecting components. During long-term use, due to the continuous vibration generated by the operation of the internal electrical equipment and the frequent changes in the external ambient temperature, the bolts and nuts gradually loosen, the tightness of the connection between the prefabricated substation and the foundation is compromised, and it is very easy to cause displacement of the foundation and the prefabricated substation as a whole. In severe cases, it may even cause the prefabricated substation to tilt, which greatly threatens the normal operation of the internal electrical equipment and the safety of surrounding personnel.

[0006] The technical solution of this utility model is as follows:

[0007] A box-type transformer foundation for a substation includes:

[0008] An alloy frame, wherein connecting rods are fixedly connected at the corners of the alloy frame, and a fixing ring is fixed at the other end of the connecting rod. A concrete slab is cast on the outside of the alloy frame, the connecting rods and the fixing ring.

[0009] The threaded column is provided in four sets. The threaded column is fixed at the corner of the top wall of the alloy frame. A first nut is screwed to the top of the threaded column and a second nut is screwed to the bottom of the threaded column.

[0010] A limiting mechanism is installed inside the threaded column, and a limiting sleeve that cooperates with the limiting mechanism is sleeved on the outside of the threaded column.

[0011] Preferably, the threaded post includes a lower post and an upper post, the upper post is fixed above the lower post, the lower post is fixed on the alloy frame, and the lower post and the upper post are integrally formed.

[0012] Preferably, the first nut is screwed onto the upper column, and the second nut is screwed onto the lower column, with the threads on the lower column and the upper column being opposite.

[0013] Preferably, the upper column has a cavity inside, and the limiting mechanism is installed inside the cavity of the upper column.

[0014] Preferably, the limiting mechanism includes a mounting column, which is fixed between the upper and lower walls of the cavity of the upper column, and a mounting seat is slidably sleeved on the outer side of the mounting column;

[0015] A number of rotating rods are symmetrically and rotatably mounted on the top of the side wall of the mounting base, and a spring is fixed between the bottom wall of the mounting base and the cavity bottom wall of the upper column.

[0016] The first spring is sleeved on the outside of the mounting post;

[0017] A No. 2 spring is fixed between the side wall of the rotating rod and the side wall of the mounting base;

[0018] A movable ring is fixed to the outside of the mounting base by a connecting block;

[0019] The movable ring is slidably sleeved on the outside of the upper column.

[0020] Preferably, the upper column sidewall has a through groove corresponding to the position of the rotating rod and the connecting block, and the rotating rod and the connecting block are slidably installed in the through groove.

[0021] Preferably, the limiting cylinder includes a cylinder body, an inner shell is fixed to the top wall of the inner cavity of the cylinder body, six locking blocks are symmetrically fixed to the side wall of the inner cavity of the cylinder body, and a through hole that cooperates with the upper column is opened through the center of the cylinder body.

[0022] Preferably, the side wall of the second nut has a groove that mates with the locking block.

[0023] The beneficial effects of this utility model are as follows:

[0024] In this invention, a rectangular alloy frame is used as the basic frame, and concrete is poured on the outside to increase the overall strength. The device can be fixed in a designated position by the fixed ring and the external ground nail. The threaded post, the first nut, the second nut, the limiting mechanism and the limiting cylinder can stably install the box-type substation on the device. Compared with the traditional bolt connection method, it can effectively prevent the connection position of the box-type substation from loosening, causing displacement and tilting, and creating safety hazards. Attached Figure Description

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0026] Fig. 1 This is a perspective view of the external structure of this utility model;

[0027] Fig. 2 This is a perspective view of the external structure of the alloy frame of this utility model;

[0028] Fig. 3 This is a perspective view of the external structure of the threaded column of this utility model;

[0029] Fig. 4 This is a perspective view of the external structure of the present invention in the separated state of the threaded column, the limiting cylinder, the first nut, and the second nut.

[0030] Fig. 5 This is a three-dimensional view of the limiting mechanism structure of this utility model;

[0031] Fig. 6 This is a three-dimensional view of the limiting cylinder structure of this utility model.

[0032] In the diagram: 1. Alloy frame; 2. Connecting rod; 3. Fixing ring; 4. Concrete slab; 5. Threaded column; 51. Lower column; 52. Upper column; 6. Nut No. 1; 7. Limiting mechanism; 71. Mounting column; 72. Mounting base; 73. Spring No. 1; 74. Rotating rod; 75. Spring No. 2; 76. Movable ring; 8. Limiting cylinder; 81. Cylinder body; 82. Inner shell; 83. Through hole; 84. Locking block; 9. Through groove; 10. Nut No. 2; 11. Locking groove. Detailed Implementation

[0033] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0034] Example 1

[0035] like Figs. 1-4 As shown, this embodiment proposes:

[0036] A box-type transformer foundation for a substation includes:

[0037] Alloy frame 1, connecting rod 2 is fixedly connected to the corner of alloy frame 1, and fixing ring 3 is fixed to the other end of connecting rod 2. Concrete slab 4 is cast on the outside of alloy frame 1, connecting rod 2 and fixing ring 3.

[0038] Threaded post 5, four sets of threaded post 5 are provided. The threaded post 5 is fixed at the corner of the top wall of the alloy frame 1. The top of the threaded post 5 is screwed with a first nut 6 and the bottom of the threaded post 5 is screwed with a second nut 10.

[0039] The limiting mechanism 7 is installed inside the threaded column 5, and the limiting cylinder 8 that cooperates with the limiting mechanism 7 is sleeved on the outside of the threaded column 5.

[0040] In this embodiment, a rectangular alloy frame 1 is used as the basic frame, and concrete is poured on the outside to increase the overall strength. The fixed ring 3, together with the external ground nails, can fix the device in the designated position. The threaded post 5, together with the first nut 6, the second nut 10, the limiting mechanism 7 and the limiting cylinder 8, can stably install the box-type substation on the device. Compared with the traditional bolt connection method, it can effectively prevent the connection position of the box-type substation from loosening, causing it to shift or tilt, and creating safety hazards.

[0041] Example 2

[0042] like Figs. 4-6 As shown, based on the same concept as Embodiment 1 above, this embodiment also proposes:

[0043] The threaded column 5 includes a lower column 51 and an upper column 52. The upper column 52 is fixed above the lower column 51, and the lower column 51 is fixed on the alloy frame 1. The lower column 51 and the upper column 52 are integrally formed.

[0044] Nut 6 is screwed onto the upper column 52, and nut 10 is screwed onto the lower column 51. The threads on the lower column 51 and the upper column 52 are opposite.

[0045] The upper column 52 has a cavity inside, and the limiting mechanism 7 is installed in the cavity of the upper column 52.

[0046] The limiting mechanism 7 includes a mounting post 71, which is fixed between the upper and lower walls of the cavity of the upper post 52, and a mounting seat 72 is slidably sleeved on the outside of the mounting post 71.

[0047] A number of rotating rods 74 are symmetrically and rotatably mounted on the top of the side wall of the mounting base 72, and a spring 73 is fixed between the bottom wall of the mounting base 72 and the cavity bottom wall of the upper column 52.

[0048] Spring No. 73 is sleeved on the outside of mounting post 71;

[0049] A No. 2 spring 75 is fixed between the side wall of the rotating rod 74 and the side wall of the mounting base 72;

[0050] A movable ring 76 is fixed to the outer side of the mounting base 72 by a connecting block;

[0051] The movable ring 76 is slidably sleeved on the outside of the upper column 52.

[0052] A through groove 9 is provided on the side wall of the upper column 52 corresponding to the position of the rotating rod 74 and the connecting block. The rotating rod 74 and the connecting block are slidably installed in the through groove 9.

[0053] The limiting cylinder 8 includes a cylinder body 81, an inner shell 82 fixed to the top wall of the inner cavity of the cylinder body 81, six locking blocks 84 symmetrically fixed to the side wall of the inner cavity of the cylinder body 81, and a through hole 83 that cooperates with the upper column 52 is opened through the center of the cylinder body 81.

[0054] The side wall of nut 10 has a groove 11 that mates with the locking block 84.

[0055] In this embodiment, the threaded post 5, together with the first nut 6, the second nut 10, the limiting mechanism 7 and the limiting cylinder 8, can stably install the box-type substation on this device, effectively preventing the bolts from loosening and shifting due to vibration during long-term use of the box-type substation. When installing the prefabricated substation on the threaded post 5, first insert the threaded post 5 into the mounting hole on the prefabricated substation, and screw the second nut 10 onto the lower post 51 until the second nut 10 is tightened and cannot move. Then, put the limiting cylinder 8 on the outside of the threaded post 5, and screw the first nut 6 onto the upper post 52. As the first nut 6 rotates and moves downward, the locking block 84 inside the cylinder 81 aligns with the locking groove 11, ensuring that the locking block 84 can smoothly engage with the locking groove 11. As the cylinder 81 moves downward, it will drive the movable ring 76 to move downward. As the movable ring 76 moves downward, it will drive the internal mounting seat 72 to move downward. As the mounting seat 72 moves downward, it will drive the rotating rod 74 to move downward until the bottom end of the rotating rod 74 contacts the bottom wall of the second nut 10, and the side wall is abutted by the bottom end of the inner shell 82. At this time, the installation of the prefabricated substation is completed. The first set of locking block 84 and locking slot 11 can effectively prevent the second nut 10 from being vibrated and deflected. At the same time, the set rotating rod 74 will press on the second nut 10 to prevent the second nut 10 from rotating and moving upward. Finally, the first nut 6 set to rotate in the opposite direction to the second nut 10 can further prevent the second nut 10 from loosening, thereby enabling the box-type substation to work stably for a long time.

[0056] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A box-type transformer foundation for a substation, characterized in that, include: Alloy frame (1), with connecting rods (2) fixedly connected at the corners of the alloy frame (1), and a fixing ring (3) fixed at the other end of the connecting rod (2). A concrete slab (4) is cast on the outside of the alloy frame (1), connecting rods (2) and fixing ring (3). Threaded column (5), the threaded column (5) is provided in four sets, the threaded column (5) is fixed at the corner of the top wall of the alloy frame (1), the top of the threaded column (5) is screwed with a first nut (6), and the bottom of the threaded column (5) is screwed with a second nut (10). The limiting mechanism (7) is installed inside the threaded column (5), and a limiting sleeve (8) that cooperates with the limiting mechanism (7) is sleeved on the outside of the threaded column (5).

2. The box-type transformer foundation for a substation according to claim 1, characterized in that, The threaded column (5) includes a lower column (51) and an upper column (52). The upper column (52) is fixed above the lower column (51), and the lower column (51) is fixed on the alloy frame (1). The lower column (51) and the upper column (52) are integrally formed.

3. A box-type transformer foundation for a substation according to claim 2, characterized in that, The first nut (6) is screwed onto the upper column (52), and the second nut (10) is screwed onto the lower column (51). The threads on the lower column (51) and the upper column (52) are opposite.

4. A box-type transformer foundation for a substation according to claim 2, characterized in that, The upper column (52) has a cavity inside, and the limiting mechanism (7) is installed in the cavity of the upper column (52).

5. A box-type transformer foundation for a substation according to claim 4, characterized in that, The limiting mechanism (7) includes a mounting post (71), which is fixed between the upper and lower walls of the cavity of the upper post (52), and a mounting seat (72) is slidably sleeved on the outside of the mounting post (71). A number of rotating rods (74) are symmetrically and rotatably mounted on the top of the side wall of the mounting base (72), and a spring (73) is fixed between the bottom wall of the mounting base (72) and the cavity bottom wall of the upper column (52). The first spring (73) is sleeved on the outside of the mounting post (71); A second spring (75) is fixed between the side wall of the rotating rod (74) and the side wall of the mounting base (72). A movable ring (76) is fixed to the outside of the mounting base (72) by a connecting block; The movable ring (76) is slidably sleeved on the outside of the upper column (52).

6. A box-type transformer foundation for a substation according to claim 5, characterized in that, The upper column (52) has a through groove (9) on its side wall corresponding to the position of the rotating rod (74) and the connecting block. The rotating rod (74) and the connecting block are slidably installed in the through groove (9).

7. A box-type transformer foundation for a substation according to claim 5, characterized in that, The limiting cylinder (8) includes a cylinder body (81), an inner shell (82) is fixed to the top wall of the inner cavity of the cylinder body (81), six locking blocks (84) are symmetrically fixed to the side wall of the inner cavity of the cylinder body (81), and a through hole (83) that cooperates with the upper column (52) is opened through the center of the cylinder body (81).

8. A box-type transformer foundation for a substation according to claim 7, characterized in that, The second nut (10) has a groove (11) on its side wall that cooperates with the locking block (84).

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