Box-type substation

Abstract

The invention belongs to the field of substations, and particularly provides a box-type substation. The box-type substation comprises a box body, the box body comprises a first base, a second base and a third base which are sequentially arranged, a transformer support is fixed to the second base, a transformer is installed on the transformer support, and a supporting frame is arranged on the sides, close to the second base, of the first base and the third base; the transformer support or the second base is provided with a jacking mechanism, the jacking mechanism comprises supporting legs which can vertically move to jack the supporting frame so as to support the second base, and the bottom ends of the supporting legs are provided with moving structures used for moving along the upper surface of the supporting frame. When the transformer is overhauled or replaced, the supporting legs in the jacking and supporting mechanism can move downwards and respectively jack and press the supporting frames on the first base and the third base so as to support the second base, then the second base is pulled to move outwards, and after the transformer is moved out of the box body, the second base can serve as a stable platform to be placed on the ground. And maintenance or replacement operation can be directly carried out conveniently and quickly.

Description

Technical Field

[0001] The invention belongs to the field of transformer substations, and in particular relates to a box-type transformer substation. Background Art

[0002] The box-type substation is basically composed of a box body, high-voltage distribution equipment, low-voltage distribution equipment and a transformer. The box body includes a base, side panels around it and a top plate on the top. The high-voltage distribution equipment, low-voltage distribution equipment and transformer are arranged in a chamber inside the box body. The chamber where the high-voltage distribution equipment is arranged can be defined as a high-voltage chamber, and the chamber where the low-voltage distribution equipment is arranged can be defined as a low-voltage chamber. The transformer is generally located between the high-voltage chamber and the low-voltage chamber.

[0003] When inspecting or replacing a transformer, due to the limited internal space of the substation, it is difficult to work inside the transformer box without removing the high-voltage and low-voltage distribution equipment, and the transformer generally needs to be moved out of the box as a whole. To facilitate the removal of the transformer from the box, conventional technical means are to add guide rails to the base of the box and install the transformer on a pulley that can be guided and moved relative to the guide rails, such as the box-type substation disclosed in the utility model patent with authorization announcement number CN201528142U. When inspecting or replacing a transformer, the pulley can be pulled to move along the guide rails, thereby bringing the transformer out of the box.

[0004] However, the conventional technical means mentioned above only consider how to remove the transformer from the box. In fact, after the transformer is removed from the box, it also needs to be repaired or replaced on a relatively stable platform. In conventional technical means, the pulley is actually higher than the base. After being removed from the box, it is often necessary to use an auxiliary bracket to support the pulley, and a braking device is also required to prevent it from moving relative to the bracket during maintenance work, which is inconvenient to operate. Summary of the invention

[0005] The object of the present invention is to provide a box-type substation to solve the technical problem in the prior art that the box-type substation is inconvenient to operate, repair or replace after the transformer is moved out of the box.

[0006] To achieve the above purpose, the technical solution of the box-type substation provided by the present invention is: A box-type substation comprises a box body, wherein the box body comprises a first base, a second base and a third base arranged in sequence, a transformer support is fixed on the second base, a transformer is mounted on the transformer support, a support frame is provided on one side of the first base and the third base close to the second base, a supporting mechanism is installed on the transformer support or the second base, the supporting mechanism comprises a support leg which can be vertically moved to press the supporting frame to prop up the second base, and a movable structure for moving along the upper surface of the supporting frame is provided at the bottom end of the support leg.

[0007] As a further improvement, the mobile structure includes a wheel frame installed on the supporting legs, and at least two rollers are installed on the wheel frame.

[0008] As a further improvement, the supporting mechanism is installed on the transformer support, and the transformer support is provided with a through hole adapted to the shape of the wheel frame for guiding the wheel frame to pass up and down.

[0009] As a further improvement, a guide cylinder is installed on the transformer support, and the inner hole of the guide cylinder is consistent with the shape and size of the perforation to provide guidance for the wheel frame to move up and down.

[0010] As a further improvement, the supporting mechanism includes a fixing frame fixed on the transformer support, on which a guide sleeve and a guide rod with one end inserted into the guide sleeve and cooperating with the guide sleeve are installed, the guide rod constitutes the support leg, the guide sleeve has an external threaded section, the external threaded section is connected to a pressing nut, and a force transmission member is connected between the pressing nut and the guide rod to push the guide rod downward by screwing the pressing nut.

[0011] As a further improvement, the force transmission member is a spring.

[0012] As a further improvement, the support frame includes a vertical section and a horizontal section, the vertical section is connected to the corresponding first base or third base, and the horizontal section is at least partially located on a side of the vertical section close to the second base.

[0013] As a further improvement, the moving direction of the moving structure is defined as the longitudinal direction, and the horizontal section is provided with a limiting structure that abuts and cooperates with a corresponding matching structure on the transformer support to limit the lateral position of the transformer support.

[0014] As a further improvement, the limiting structure includes an inner limiting plate arranged below the horizontal section, and the corresponding matching structure includes an outer limiting plate located laterally outside the inner limiting plate.

[0015] As a further improvement, one of the horizontal section and the transformer support is provided with a vertically extending limit column, and the other is provided with a limit hole for inserting the limit column, and the moving stroke of the support leg is sufficient to allow the limit column to completely withdraw from the limit hole.

[0016] As a further improvement, two partitions arranged at intervals are provided inside the box body, and the partitions divide the box body into independent high-voltage chamber, low-voltage chamber, and transformer chamber, and the transformer is located in the transformer chamber.

[0017] As a further improvement, the door of the high voltage chamber is located on the side of the high voltage chamber away from the transformer chamber, and the door of the low voltage chamber is located on the side of the low voltage chamber away from the transformer chamber.

[0018] As a further improvement, a detachable reinforcement frame is connected between the high-pressure chamber and the low-pressure chamber.

[0019] The present invention is a pioneering invention, and its beneficial effects are: when inspecting or replacing the transformer, the legs in the supporting mechanism can move downward and press the support frames on the first base and the third base respectively to support the second base (separated from the fixed foundation), and then pull the second base outward. During the pulling process, the legs can move along the upper surface of the support frame through the moving structure, and then move the transformer out of the box. After the transformer is moved out of the box, the second base can be placed on the ground as a stable platform, and the inspection or replacement operation can be carried out directly, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional diagram of one of the viewing angles of an embodiment of a box-type substation (with a hidden room door) in the present invention; Figure 2 A three-dimensional diagram of another perspective of the box-type substation embodiment (hidden room door) of the present invention; Figure 3 A three-dimensional diagram of another viewing angle of the box-type substation embodiment (with hidden room door) of the present invention; Figure 4 for Figure 3 A partial enlarged view of the middle A; Figure 5 It is an assembly diagram of a transformer, a transformer support, a first base, a second base, and a third base in an embodiment of a box-type substation in the present invention; Figure 6 It is a schematic diagram of the assembly of the transformer and the transformer support in the embodiment of the box-type substation of the present invention; Figure 7 It is a structural schematic diagram of the top support mechanism in the embodiment of the box-type substation in the present invention; Figure 8 It is a three-dimensional diagram of an embodiment of a box-type substation (display room door) in the present invention.

[0021] Description of reference numerals: 1. Top cover; 2. High-voltage chamber; 3. Strengthening frame; 4. First base; 5. Support frame; 6. Inner limit plate; 7. Guide cylinder; 8. Third base; 9. Second base; 10. Low-voltage chamber; 11. Transformer; 12. Extension plate; 13. U-shaped frame; 14. Stud; 15. Horizontal frame; 16. Fixed frame; 17. Guide sleeve; 18. Top pressure nut; 19. Pressure ring; 20. Spring; 21. Limit column; 22. Fastening nut; 23. External limit plate; 24. Limit column mounting plate; 25. Roller; 26. Perforation; 27. Limit hole; 28. Guide rod; 29. ​​Roller mounting plate; 30. Ear frame; 31. Low-voltage chamber door; 32. Transformer chamber door; 33. High-voltage chamber door. DETAILED DESCRIPTION

[0022] In order to provide a box-type substation that is convenient for repairing or replacing transformers, the basic technical concept of the present invention is to divide the base into three blocks and install the transformer on the middle block. When the transformer needs to be repaired or replaced, the middle block can be pulled out of the box to drive the transformer out of the box. After being moved out of the box, the middle block can be used as a fixed foundation for repairing or replacing the transformer without the need for other auxiliary brackets. The present invention is further described in detail below in conjunction with the embodiments.

[0023] As a basic example, Figure 1-Figure 3 As shown, the box-type substation includes a box body, which is a closed structure as a whole, including a base, side panels around it and a top cover 1. The base serves as a fixed foundation and can be fixed to the installation position of the corresponding box-type substation (such as a cement pier) when in use. Specifically, the base of the box body actually includes three parts, namely, a first base 4, a second base 9 and a third base 8 arranged in sequence. The three parts basically correspond to the high-voltage chamber 2, the low-voltage chamber 10 and the transformer 11 chamber respectively. A transformer support is fixed on the second base 9, that is, a base structure that supports and fixes the transformer 11, and the transformer 11 is installed on the transformer support.

[0024] As an optional implementation of the transformer support, Figure 3-Figure 6 As shown, the transformer support includes a transverse frame 15 (specifically, channel steel can be used) fixed on the second base 9, and two U-shaped frames 13 fixed on the transverse frame 15. The openings of the two U-shaped frames 13 are opposite to each other and face outward. A stud 14 can be set on the transformer 11. Both ends of the stud 14 pass through the through holes on the two U-shaped frames 13, and the stud 14 and the U-shaped frames 13 are locked with a fastening nut 22. In order to facilitate the installation of the top support mechanism, an extension plate 12 is also fixed on the U-shaped frame 13.

[0025] It should be noted that the above only exemplifies a form of the transformer support. In fact, according to the actual shape and structure of the transformer 11, the transformer support can also be other structures, such as a frame-shaped structure or a box-shaped structure, etc., which can fix and support the transformer 11.

[0026] like Figure 1-Figure 5As shown, a support frame 5 is provided on one side of the first base 4 and the third base 8 close to the second base 9, where the support frame 5 can play a supporting role when the second base 9 needs to be pulled out. Under normal conditions, the second base 9 also needs to be fixed in a corresponding fixed installation position. In order to smoothly pull out the second base 9, the box-type substation should also be equipped with a top support mechanism. When the transformer 11 needs to be repaired or replaced, the top support mechanism will prop up the second base 9 so that the second base 9 is separated from the corresponding fixed position. Specifically, the top support mechanism can be installed on the transformer support or directly on the second base 9. It is not difficult to understand from the analysis of the above principles that the top support mechanism should basically include a vertically movable leg. The leg moves downward to press on the support frame 5 to prop up the second base 9, and the second base 9 can be pulled out in the propped-up state. Therefore, the bottom end of the leg should also be provided with a movable structure for moving along the upper surface of the support frame 5.

[0027] From the analysis of the above structure, it can be known that when the transformer 11 needs to be repaired or replaced, the top support mechanism can be adjusted to lift up the second base 9, and directly pull (manually or using tools) the second base 9 to move outward. This process is supported by the support frame 5. The outward movement of the second base 9 also drives the transformer 11 to move outward, and the second base 9 can be directly used as a stable foundation for the staff to repair or replace the transformer 11, which is convenient and efficient. After the repair or replacement operation is completed, the second base 9 can be sent back, and after it is sent back, the top support mechanism can be adjusted to lower the second base 9.

[0028] To facilitate the movement of the second base 9, as a preferred embodiment, the moving structure moving along the upper surface of the support frame 5 can adopt a wheeled moving structure, which can reduce the friction of the movement of the second base 9 compared with the sliding moving structure. Figure 7 As shown, the mobile structure includes a wheel frame mounted on the supporting legs, and at least two rollers 25 are mounted on the wheel frame. Basically, the two rollers 25 can play a basic supporting role. Of course, if space permits, more rollers 25 can be installed on the wheel frame. Specifically, the wheel frame includes a roller mounting plate 29 and an ear frame 30, and multiple rollers 25 can be mounted on the same roller mounting plate 29 through the ear frame 30.

[0029] For the case where the supporting mechanism is installed on the transformer support, as a more preferred embodiment, Figure 4-Figure 6 As shown, the transformer support (specifically the extension plate 12) is also provided with a through hole 26 that matches the shape of the wheel frame for the wheel frame to guide and pass through up and down. In this way, when the leg moves up and down, under the restriction and guidance of the through hole 26, the leg will not be subjected to excessive lateral force, thereby ensuring that the leg can move up and down stably.

[0030] In order to improve the guiding effect of the transformer support on the support legs, it is better to Figure 5-Figure 7As shown, a guide cylinder 7 is also installed on the transformer support. The guide cylinder 7 is a square structure, and its inner hole is consistent with the size and shape of the through hole 26 to provide guidance for the wheel frame to move up and down. This is equivalent to extending the inner hole structure on the transformer support that can cooperate with the wheel frame guide, making the up and down movement of the support leg more stable.

[0031] Based on any of the above embodiments, considering the limited space inside the box, as a preferred embodiment that saves more space and is convenient for adjustment, as Figure 4 and Figure 7 As shown, the supporting mechanism includes a fixing frame 16 fixed on the transformer support (specifically, the extension plate 12), and the fixing frame 16 can be an inverted L shape as shown in the figure, or an inverted U shape. A guide sleeve 17 and a guide rod 28 with one end inserted into the guide sleeve 17 and guidingly matched with the guide sleeve 17 are installed on the fixing frame 16. In fact, the guide rod 28 can move up and down relative to the guide sleeve 17, that is, the guide rod 28 constitutes a leg. In order to drive the guide rod 28 to move downward, this embodiment is based on the principle of the screw nut mechanism, and an external thread section is provided on the guide sleeve 17. The external thread section is connected with a pressing nut 18, and a force transmission member is connected between the pressing nut 18 and the guide rod 28. Screwing the pressing nut 18 can move downward along the external thread section and push the guide rod 28 downward through the force transmission member, so as to play the role of pressing the support frame 5 and then supporting the second base 9.

[0032] On the basis of the above embodiments, preferably, Figure 4 and Figure 7 As shown, the above-mentioned force transmission member can adopt a spring 20, and the spring 20 needs to have sufficient rigidity. After completing the maintenance or replacing the transformer 11, the top pressure nut 18 is screwed upward, and the spring 20 can reset itself to drive the guide rod 28 to move upward.

[0033] Optionally, in order to increase the contact area between the pressing nut 18 and the force transmission member, a pressing ring 19 located below the pressing nut 18 may be added to the guide sleeve 17 .

[0034] It should be noted that, in other embodiments, the supporting mechanism may also adopt a manual jack, one end of the jack is fixed on the transformer support, and the other end is movable and constitutes a support leg.

[0035] As another preferred embodiment, Figure 4As shown, in this embodiment, the support frame 5 includes a vertical section and a horizontal section. The vertical sections of the two support frames 5 are respectively connected to the corresponding first base 4 or the third base 8 to play a supporting role. At least part of the horizontal section is located on the side of the vertical section close to the second base 9. The figure shows an example of a situation where all the horizontal sections are located on the side of the vertical section close to the second base 9. At this time, the support frame 5 is equivalent to an inverted L-shaped structure. Of course, other embodiments do not exclude the situation where a part of the horizontal section is located on the side of the vertical section away from the second base 9, that is, the support frame 5 is a T-shaped structure. The support frame 5 of this structure will not take up too much space, and can also provide a large support area for supporting the second base 9. However, it should be noted that in other alternative embodiments, the support frame 5 can also be a long columnar structure.

[0036] On the basis of the above embodiment, preferably, in order to ensure that the second base 9 can move stably in the process of pulling out the second base 9 and pushing the second base 9 inward, the horizontal section of the support frame 5 is also provided with a limiting structure to limit the movement direction of the second base 9. Specifically, the movement direction of the second base 9 is defined as the longitudinal direction, and the limiting structure provided in the horizontal section abuts and cooperates with the corresponding matching structure on the transformer support to limit the lateral position of the transformer support.

[0037] As an optional implementation of the limiting structure, Figure 4 As shown, the limiting structure includes an inner limiting plate 6 disposed below the horizontal section, and the corresponding matching structure disposed on the transformer support includes an outer limiting plate 23 disposed laterally outside the inner limiting plate 6. The inner limiting plate 6 has an L-shaped cross section, and is in abutment with the outer limiting plate 23, thereby forming a structure in which the support frame 5 "internally supports" the transformer support to achieve limiting.

[0038] Of course, the limiting structure may also be in other forms, such as the above-mentioned "external limiting plate 23" and "internal limiting plate 6" are interchanged to form a structure in which the support frame 5 "clamps" the transformer support to achieve limiting.

[0039] Furthermore, if Figure 4 and Figure 8 As shown, the transformer support is provided with a vertically extending limit hole 27 (either a through hole or a blind hole), and accordingly, the support frame 5 is provided with a limit column 21 that can be inserted into the limit hole 27. Specifically, a limit column mounting plate 24 can be provided, and the limit column 21 is mounted on the limit column mounting plate 24. Under normal circumstances, the limit column 21 is inserted into the limit hole 27 to limit the position of the transformer 11 and prevent the transformer 11 from accidentally moving, which is equivalent to a safety measure. In this case, in order to enable the second base 9 to be smoothly moved out, the moving stroke of the supporting mechanism needs to be sufficient to enable the limit column 21 to completely withdraw from the limit hole 27.

[0040] It is not difficult to understand that in other embodiments, the positions of the limiting holes 27 and the limiting columns 21 can also be interchanged, that is, the limiting columns 21 are arranged on the transformer support, and the limiting holes 27 are arranged on the support frame 5, which can achieve the same effect.

[0041] In addition, if Figure 1-Figure 3 As shown, two partitions are arranged at intervals inside the box, which divide the box into independent high-voltage room 2, low-voltage room 10 and transformer room 11. The high-voltage power distribution equipment is located in the high-voltage room 2, the low-voltage power distribution equipment is located in the low-voltage room 10, and the transformer 11 is located in the transformer room 11. The necessary cables can be connected through the partition. In this way, each electrical room is independent, and when the transformer 11 is removed, it will not affect the related equipment in other electrical rooms.

[0042] Furthermore, if Figure 8 As shown, the high voltage chamber door 33 is located on the side of the high voltage chamber 2 away from the transformer 11 chamber, and the low voltage chamber door 31 is located on the side of the low voltage chamber 10 away from the transformer 11 chamber. Accordingly, the transformer chamber door 32 is located on one or both sides of the moving direction of the transformer 11. Compared with arranging the chamber doors on the same side, this is convenient for separate maintenance of equipment in different electrical chambers.

[0043] In order to make the box have enough strength, Figure 2 As shown, a reinforcement frame 3 is connected between the high-voltage chamber 2 and the low-voltage chamber 10. The reinforcement frame 3 is detachable and can be connected by bolts. While improving the strength of the box body, it does not affect the normal removal of the transformer 11.

[0044] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A box-type substation, characterized in that: The utility model comprises a box body, which comprises a first base, a second base and a third base arranged in sequence, a transformer support is fixed on the second base, a transformer is installed on the transformer support, a support frame is provided on the side of the first base and the third base close to the second base, a supporting mechanism is installed on the transformer support or the second base, the supporting mechanism comprises a support leg which can be vertically moved to press the supporting frame to prop up the second base, and a movable structure for moving along the upper surface of the supporting frame is provided at the bottom end of the support leg.

2. The box-type substation according to claim 1 is characterized in that: The mobile structure comprises a wheel frame installed on the supporting legs, and at least two rollers are installed on the wheel frame.

3. The box-type substation according to claim 2 is characterized in that: The supporting mechanism is installed on a transformer support, and the transformer support is provided with a through hole which is adapted to the shape of the wheel frame and is used for guiding the wheel frame to pass upward and downward.

4. The box-type substation according to claim 3 is characterized in that: A guide cylinder is installed on the transformer support, and the inner hole of the guide cylinder is consistent with the shape and size of the perforation to provide guidance for the wheel frame to move up and down.

5. The box-type substation according to any one of claims 1 to 4, characterized in that: The supporting mechanism comprises a fixing frame fixed on the transformer support, on which a guide sleeve and a guide rod having one end inserted into the guide sleeve and cooperating with the guide sleeve for guiding are installed, the guide rod constitutes the supporting leg, the guide sleeve has an external thread section, the external thread section is connected with a pressing nut, a force transmission member is connected between the pressing nut and the guide rod, so as to push the guide rod to move downward by screwing the pressing nut.

6. The box-type substation according to claim 5 is characterized in that: The force transmission member is a spring.

7. The box-type substation according to any one of claims 1 to 4, characterized in that: The support frame includes a vertical section and a horizontal section, the vertical section is connected to the corresponding first base or the third base, and the horizontal section is at least partially located on a side of the vertical section close to the second base.

8. The box-type substation according to claim 7 is characterized in that the moving direction of the movable structure is defined as the longitudinal direction, and the horizontal section is provided with a limiting structure that abuts and cooperates with the corresponding matching structure on the transformer support to limit the lateral position of the transformer support.

9. The box-type substation according to claim 8 is characterized in that: The limiting structure includes an inner limiting plate arranged below the horizontal section, and the corresponding matching structure includes an outer limiting plate located laterally outside the inner limiting plate.

10. The box-type substation according to claim 7, characterized in that: One of the horizontal section and the transformer support is provided with a vertically extending limit column, and the other is provided with a limit hole for the limit column to be inserted, and the moving stroke of the support leg is sufficient to allow the limit column to completely withdraw from the limit hole.

11. The box-type substation according to any one of claims 1 to 4, characterized in that: Two partitions arranged at intervals are arranged inside the box, and the partitions divide the box into independent high-voltage chamber, low-voltage chamber and transformer chamber, and the transformer is located in the transformer chamber.

12. The box-type substation according to claim 11, characterized in that: The door of the high voltage chamber is located at a side of the high voltage chamber away from the transformer chamber, and the door of the low voltage chamber is located at a side of the low voltage chamber away from the transformer chamber.

13. The box-type substation according to claim 11, characterized in that: A detachable reinforcement frame is also connected between the high-pressure chamber and the low-pressure chamber.

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