A high and low pressure European transformer basic mold shell structure

Abstract

The present invention relates to the technical field of European transformer basic shells, and proposes a high- and low-pressure European transformer basic mold shell structure, including a bottom shell, the outer surface of the bottom shell is respectively provided with a short side shell and a long side shell, the outer surfaces of the long side shell and the short side shell are commonly connected to a top shell, a middle mortise and tenon structure is provided between the long side shell and the short side shell, an upper mortise and tenon assembly is provided between the top shell and the short side shell and the long side shell, a lower mortise and tenon assembly is provided between the bottom shell and the short side shell and the long side shell, the middle mortise and tenon structure includes a clamping block fixedly connected to the outer surface of the short side shell, the outer surface of the clamping block is provided with a reinforcement hole, the outer surface of the long side shell is provided with a clamping slot, the outer surface of the long side shell is provided with a reinforcement assembly near the clamping slot, and the reinforcement assembly includes a bolt hole provided on the outer surface of the side of the long side shell. Through the above technical solution, the problem of the connection and fixation of the existing European transformer basic mold shell in the prior art and the inability to conveniently install and disassemble the entire shell is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of European transformer basic shells, and in particular to a high- and low-pressure European transformer basic mold shell structure. Background Art

[0002] The high-voltage room of European-style box transformer is generally composed of high-voltage load switch, high-voltage fuse and lightning arrester, etc. It can perform power outage operation and has overload and short-circuit protection. The low-voltage room is composed of low-voltage air switch, current transformer, ammeter, voltmeter, etc. The transformer generally adopts S9 or dry type. The European-style transformer basic mold shell is a shell structure used to protect the European-style transformer box. The existing European-style transformer basic mold shell structure is fixed by welding. The side panels of the existing European-style transformer basic mold shell are connected and fixed, and the entire shell side panels cannot be conveniently installed and disassembled. For this reason, we proposed a high and low voltage European-style transformer basic mold shell structure. Summary of the Invention

[0003] The present invention proposes a high-low pressure European transformer basic mold shell structure, which solves the problem in the related art that the connection and fixation of the existing European transformer basic mold shell cannot be conveniently installed and disassembled.

[0004] The technical solutions of the present invention are as follows:

[0005] A high-low pressure European transformer basic mold shell structure includes a bottom shell, the outer surface of the bottom shell is respectively provided with a short side shell and a long side shell, the outer surfaces of the long side shell and the short side shell are commonly connected to a top shell, a middle mortise and tenon structure is provided between the long side shell and the short side shell, upper mortise and tenon components are provided between the top shell and the short side shell and the long side shell, and lower mortise and tenon components are provided between the bottom shell and the short side shell and the long side shell;

[0006] The middle mortise and tenon structure includes a clamping block fixedly connected to the outer surface of the short side shell, the outer surface of the clamping block is provided with a reinforcement hole, the outer surface of the long side shell is provided with a clamping groove, and the outer surface of the long side shell is provided with a reinforcement component near the clamping groove;

[0007] The reinforcing assembly includes a bolt hole opened on the outer surface of the side of the long side shell, a connecting groove is provided inside the long side shell near the bolt hole, a movable column is movably provided inside the long side shell, and the two ends of the movable column are respectively fixedly connected with a clamping column and a fitting block, a return spring is provided between one side of the fitting block connected to the movable column and the long side shell, a fixing bolt is provided inside the bolt hole, and the root of the fixing bolt is fixedly connected with a frustum block.

[0008] As a further technical solution of the present invention, the number of the short side shells and the long side shells are both two groups and are symmetrically distributed, and the four side outer surfaces of the top shell are provided with heat dissipation holes, and the number of the heat dissipation holes is several groups and is distributed in an array.

[0009] As a further technical solution of the present invention, the upper mortise and tenon assembly includes a No. 1 opening groove respectively opened on the outer surface of the upper end of the long side shell and the short side shell, and the upper ends of the long side shell and the short side shell are fixedly connected with a No. 1 clamping plate near the No. 1 opening groove, and the lower end outer surface of the top shell is provided with a No. 2 opening groove, and the lower end outer surface of the top shell is fixedly connected with a No. 2 clamping plate.

[0010] As a further technical solution of the present invention, the lower mortise and tenon assembly includes a fixing plate fixedly connected to the outer surface of the bottom shell, the outer surface of the fixing plate is provided with a positioning groove, the outer surfaces of the short side shell and the long side shell are both provided with a through groove, the outer surfaces of the long side shell and the short side shell are both provided with a connecting groove near the through groove, a locking block is provided inside the through groove, the outer surface of the locking block is provided with a detent groove, the outer surfaces of the short side shell and the long side shell are both provided with a plate-shaped groove, and the outer surfaces of the short side shell and the long side shell are both fixedly connected to the limiting plate.

[0011] As a further technical solution of the present invention, the card slot is matched with the card block, and the card block and the card slot are both integrated into a whole in pairs. A group of short side shells corresponds to several groups of card blocks, and the movable column, card column and fitting block are all slidably connected to the long side shell.

[0012] As a further technical solution of the present invention, one end of the clamping column matches the reinforcement hole, the movable column is a quadrangular prism structure, and the two ends of the main body are respectively connected to the clamping column and the bonding block, the area of ​​the two ends of the movable column is smaller than the area of ​​the connection surface between the clamping column and the bonding block and the movable column, the frustum block is a frustum-shaped structure, and the frustum block and the bonding block are in line contact when they are bonded.

[0013] As a further technical solution of the present invention, the return spring is sleeved on the outer surface of the movable column, and the two ends of the return spring are respectively connected to the long side shell and the fitting block. The return spring is used to disengage the clamping column from the reinforcement hole, and the pushing action of the frustum block is used to enable the clamping column to be engaged in the reinforcement hole. The connecting groove is connected to the reinforcement hole and the bolt hole.

[0014] As a further technical solution of the present invention, the No. 1 opening slot matches the No. 2 card plate, the No. 1 card plate matches the No. 2 opening slot, the No. 1 card plate and the top shell are slidably connected, and the No. 2 card plate and the short side shell and the long side shell are both slidably connected.

[0015] As a further technical solution of the present invention, the number of the fixing plates is four, corresponding to the plate-shaped grooves on the two groups of long side shells and the short side shells respectively, the plate-shaped grooves match the fixing plates, the positioning grooves match one end of the snap-fitting blocks, the snap-fitting blocks are all slidably connected to the fixing plates and the long side shells, and the connecting grooves are connected to the through grooves.

[0016] As a further technical solution of the present invention, one end of the locking block matches the through groove, the number of through grooves corresponding to a group of the long side shell and the short side shell is two groups, the number of positioning grooves corresponding to a group of the fixing plate is two groups and are symmetrically distributed, and the through grooves on the outer surfaces of the long side shell and the short side shell both penetrate the long side shell and the short side shell.

[0017] The working principle and beneficial effects of the present invention are:

[0018] 1. The present invention facilitates the connection between the long side shell and the short side shell through the role of the middle mortise and tenon structure, can strengthen the connection between the short side shell and the long side shell at the corner, can greatly enhance the stability of the connection, and can facilitate the disassembly between the long side shell and the short side shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a partial structural diagram of the long side shell disassembly and assembly of the present invention;

[0022] Figure 3 It is a schematic diagram of a partial structure of the mortise and tenon structure of the present invention;

[0023] Figure 4 It is a partial front cross-sectional view of the mortise and tenon structure of the present invention;

[0024] Figure 5 For the present invention Figure 2 A magnified view of A;

[0025] Figure 6 It is a schematic diagram of the local structure of the card slot of the present invention;

[0026] Figure 7 A schematic diagram of the partial structure of the top shell of the present invention for disassembly and assembly;

[0027] Figure 8 This is a partial structural diagram of the long side shell disassembly and assembly of the present invention;

[0028] Figure 9 This is a schematic diagram of the partial structure of the disassembly and assembly of the other end of the long side shell of the present invention.

[0029] In the figure: 1, bottom shell; 2, short side shell; 3, long side shell; 4, top shell;

[0030] 5. Middle mortise and tenon structure; 51. Clamping block; 52. Reinforcement hole; 53. Clamping slot; 54. Reinforcement assembly; 541. Bolt hole; 542. Connecting slot; 543. Movable column; 544. Clamping column; 545. Fitting block; 546. Return spring; 547. Fixing bolt; 548. Round table block;

[0031] 6. Upper mortise and tenon assembly; 61. Opening slot No. 1; 62. Clamping plate No. 1; 63. Clamping plate No. 2; 64. Opening slot No. 2;

[0032] 7. Lower mortise and tenon assembly; 71. Fixing plate; 72. Positioning slot; 73. Through slot; 74. Connecting slot; 75. Engaging block; 76. Snap slot; 77. Plate-shaped slot; 78. Limiting plate;

[0033] 8. Heat dissipation holes. DETAILED DESCRIPTION

[0034] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only 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 any creative efforts are within the scope of protection of the present invention.

[0035] Example 1

[0036] like Figure 1 and Figure 7 As shown, this embodiment proposes a high and low pressure European transformer basic mold shell structure, including a bottom shell 1, the outer surface of the bottom shell 1 is respectively provided with a short side shell 2 and a long side shell 3, the outer surfaces of the long side shell 3 and the short side shell 2 are commonly connected with a top shell 4, a middle mortise and tenon structure 5 is provided between the long side shell 3 and the short side shell 2, an upper mortise and tenon assembly 6 is provided between the top shell 4 and the short side shell 2 and the long side shell 3, a lower mortise and tenon assembly 7 is provided between the bottom shell 1 and the short side shell 2 and the long side shell 3, the number of the short side shells 2 and the long side shells 3 are both two groups and are symmetrically distributed, and the four side outer surfaces of the top shell 4 are provided with heat dissipation holes 8, and the number of the heat dissipation holes 8 is several groups and is distributed in an array.

[0037] Example 2

[0038] like Figures 2 to 6As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment further proposes that the middle mortise and tenon structure 5 includes a block 51 fixedly connected to the outer surface of the short side shell 2, the outer surface of the block 51 is provided with a reinforcement hole 52, the outer surface of the long side shell 3 is provided with a slot 53, the outer surface of the long side shell 3 is provided with a reinforcement component 54 near the slot 53, the reinforcement component 54 includes a bolt hole 541 provided on the outer surface of the side of the long side shell 3, the interior of the long side shell 3 is provided with a connecting groove 542 near the bolt hole 541, and the interior of the long side shell 3 is provided with a movable Column 543, both ends of the movable column 543 are fixedly connected with a clamping column 544 and a fitting block 545, a return spring 546 is provided between the fitting block 545 connecting the movable column 543 and the long side shell 3, a fixing bolt 547 is provided inside the bolt hole 541, and a frustum block 548 is fixedly connected to the root of the fixing bolt 547, the slot 53 matches the clamping block 51, the clamping block 51 and the slot 53 are two-by-two as a whole, and a group of short side shells 2 corresponds to the number of clamping blocks 51, the movable column 543, the clamping column 544 and the fitting block 545 The movable column 543 is a quadrangular prism-shaped structure, and the two ends of the main body are respectively connected to the clamping column 544 and the fitting block 545. The area of ​​the two ends of the movable column 543 is smaller than the area of ​​the connection surface between the clamping column 544 and the fitting block 545 and the movable column 543. The frustum block 548 is a frustum-shaped structure. When the frustum block 548 and the fitting block 545 are fitted, there is a line contact. The reset spring 546 is sleeved on the outer surface of the movable column 543, and the two ends of the reset spring 546 are respectively connected to the clamping column 544 and the fitting block 545. The long side shell 3 and the fitting block 545 are connected, and the reset spring 546 is used to make the clamping column 544 disengage from the reinforcement hole 52, and the pushing action of the frustum block 548 is used to make the clamping column 544 engage in the reinforcement hole 52. The connecting groove 542 is connected with the reinforcement hole 52 and the bolt hole 541. When in use, it can facilitate the connection between the long side shell 3 and the short side shell 2, and can strengthen the connection at the corner between the short side shell 2 and the long side shell 3, which can greatly enhance the stability of the connection and facilitate the disassembly between the long side shell 3 and the short side shell 2.

[0039] Example 3

[0040] like Figure 7As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment also proposes that the upper mortise and tenon assembly 6 includes a No. 1 opening groove 61 respectively opened on the outer surface of the upper end of the long side shell 3 and the short side shell 2, and the upper ends of the long side shell 3 and the short side shell 2 are fixedly connected to a No. 1 clamping plate 62 near the No. 1 opening groove 61, and the lower end outer surface of the top shell 4 is provided with a No. 2 opening groove 64, and the lower end outer surface of the top shell 4 is fixedly connected with a No. 2 clamping plate 63, the No. 1 opening groove 61 matches the No. 2 clamping plate 63, and the No. 1 clamping plate 62 matches the No. 2 opening groove 64, the No. 1 clamping plate 62 and the top shell 4 are slidingly connected, and the No. 2 clamping plate 63 and the short side shell 2 and the long side shell 3 are slidingly connected. During the installation and disassembly process, it is convenient to establish a firm connection between the top shell 4 and the long side shell 3 and the short side shell 2, which can make the installation of the top shell 4 more convenient, and at the same time, the top shell 4 can be disassembled more conveniently when it needs to be disassembled.

[0041] Example 3

[0042] like Figures 8 and 9 As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment further proposes that the lower mortise and tenon assembly 7 includes a fixing plate 71 fixedly connected to the outer surface of the bottom shell 1, the outer surface of the fixing plate 71 is provided with a positioning groove 72, the outer surfaces of the short side shell 2 and the long side shell 3 are provided with a through groove 73, the outer surfaces of the long side shell 3 and the short side shell 2 are provided with a connecting groove 74 near the through groove 73, the interior of the through groove 73 is provided with a snap block 75, the outer surface of the snap block 75 is provided with a buckling groove 76, the outer surfaces of the short side shell 2 and the long side shell 3 are provided with a plate-shaped groove 77, the outer surfaces of the short side shell 2 and the long side shell 3 are fixedly connected to the limiting plate 78, and the number of the fixing plates 71 is four groups, corresponding to the two groups of plate-shaped grooves 77 on the long side shell 3 and the short side shell 2 respectively. When the locking cam 75 is in the closed position, the locking cam 73 is locked and the locking cam 73 is in the closed position, so that the winch cam 73 is locked and the winch cam 73 is locked.

[0043] In summary, during installation, the user can place the bottom shell 1 at the position where it needs to be installed, and then insert the upper block 51 of a group of short side shells 2 into the position corresponding to the upper slot 53 of the long side shell 3, and fix the two groups of short side shells 2 through the two groups of long side shells 3. Then the user rotates and tightens the end of the fixing bolt 547 with the frustum block 548 corresponding to the position of the bolt hole 541, and pushes the fitting block 545 through the frustum block 548, so that the fitting block 545 squeezes the movable column 543, so that the other end of the movable column 543 pushes the fixing column 544 to be stuck in the reinforcement hole 52, thereby greatly strengthening the connection between the short side shell 2 and the long side shell 3.

[0044] When the connection between the two groups of long side shells 3 and the two groups of short side shells 2 is completed, the user can insert the plate-shaped grooves 77 at the lower ends of the two groups of short side shells 2 and the plate-shaped grooves 77 at the lower ends of the two groups of long side shells 3 downward corresponding to the upper end positions of the fixing plates 71. Through the action of the long side shells 3, the limiting plates 78 and the plate-shaped grooves 77, the connection between the fixing plates 71 and the short side shells 2 and the long side shells 3 is stabilized. Then, the locking block 75 is inserted into the position corresponding to the through groove 73, so that the other end of the through groove 73 is inserted into the interior of the positioning groove 72, thereby strengthening the connection between the fixing plate 71 and the short side shells 2 and the long side shells 3.

[0045] After the connection between the bottom shell 1 and the short side shell 2 and the long side shell 3 is completed, the user then places the second clamping plate 63 at the lower end of the top shell 4 corresponding to the position of the No. 1 opening groove 61, and at the same time places the No. 1 clamping plate 62 corresponding to the position of the No. 2 opening groove 64, and presses the top shell 4 vertically downward so that the top shell 4 and the short side shell 2 and the long side shell 3 are stably engaged to complete a stable connection.

[0046] It should be noted that when the shell structure needs to be disassembled, the user can grab the top shell 4 and pull it vertically upward to remove the top shell 4 from the upper ends of the short side shell 2 and the long side shell 3;

[0047] Then, insert your hand into the detent slot 76 from the connecting slot 74 and pull the snap block 75 outward horizontally to separate the snap block 75 from the fixing plate 71 until the snap block 75 is separated from the outer surface of the long side shell 3 and the short side shell 2 respectively. Then, pull the short side shell 2 vertically upward together with the long side shell 3 to remove the two sets of long side shells 3 and the short side shell 2 from the bottom shell 1.

[0048] Then, turn and loosen the fixing bolts 547 so that the frustum block 548 no longer squeezes the fitting block 545. Under the action of the return spring 546, the two sets of fitting blocks 545 will push the movable column 543 together with the clamping column 544 to the side away from the reinforcement hole 52, thereby separating the clamping column 544 from the clamping block 51. Then, pull the long side shell 3 outward from both sides of the short side shell 2 to separate the clamping block 51 from the long side shell 3, and the disassembly of the entire shell can be completed. The multiple sets of mortise and tenon structures not only facilitate the connection between the shell components, but also enhance the stability of the connection between the shell components, make it more convenient to assemble the shell when it is used, and make it easy to disassemble the shell.

[0049] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high and low pressure European transformer basic mold shell structure, characterized in that: The invention comprises a bottom shell (1), wherein the outer surface of the bottom shell (1) is respectively provided with a short side shell (2) and a long side shell (3), the outer surfaces of the long side shell (3) and the short side shell (2) are commonly connected to a top shell (4), a middle mortise and tenon structure (5) is provided between the long side shell (3) and the short side shell (2), an upper mortise and tenon assembly (6) is provided between the top shell (4) and the short side shell (2) and the long side shell (3), and a lower mortise and tenon assembly (7) is provided between the bottom shell (1) and the short side shell (2) and the long side shell (3); The middle mortise and tenon structure (5) comprises a clamping block (51) fixedly connected to the outer surface of the short side shell (2), the outer surface of the clamping block (51) is provided with a reinforcement hole (52), the outer surface of the long side shell (3) is provided with a clamping groove (53), and the outer surface of the long side shell (3) is provided with a reinforcement component (54) near the clamping groove (53); The reinforcing assembly (54) includes a bolt hole (541) provided on the outer surface of the side of the long side shell (3); a connecting groove (542) is provided inside the long side shell (3) near the bolt hole (541); a movable column (543) is movably provided inside the long side shell (3); a clamping column (544) and a fitting block (545) are fixedly connected at both ends of the movable column (543); a return spring (546) is provided between one side of the fitting block (545) connecting the movable column (543) and the long side shell (3); a fixing bolt (547) is provided inside the bolt hole (541); and a frustum block (548) is fixedly connected to the root of the fixing bolt (547); The upper mortise and tenon assembly (6) comprises a No. 1 opening groove (61) respectively provided on the outer surface of the upper end of the long side shell (3) and the short side shell (2); the upper end of the long side shell (3) and the short side shell (2) are both fixedly connected to a No. 1 clamping plate (62) near the No. 1 opening groove (61); the lower end outer surface of the top shell (4) is provided with a No. 2 opening groove (64); the lower end outer surface of the top shell (4) is fixedly connected to the No. 2 clamping plate (63); The lower mortise and tenon assembly (7) comprises a fixing plate (71) fixedly connected to the outer surface of the bottom shell (1), the outer surface of the fixing plate (71) is provided with a positioning groove (72), the outer surfaces of the short side shell (2) and the long side shell (3) are both provided with a through groove (73), the outer surfaces of the long side shell (3) and the short side shell (2) are both provided with a connecting groove (74) near the through groove (73), a locking block (75) is provided inside the through groove (73), the outer surface of the locking block (75) is provided with a buckling groove (76), the outer surfaces of the short side shell (2) and the long side shell (3) are both provided with a plate-shaped groove (77), and the outer surfaces of the short side shell (2) and the long side shell (3) are both fixedly connected to a limiting plate (78).

2. A high and low pressure European transformer basic mold shell structure according to claim 1, characterized in that: The number of the short side shells (2) and the long side shells (3) are both two groups and are symmetrically distributed. The four side outer surfaces of the top shell (4) are all provided with heat dissipation holes (8). The number of the heat dissipation holes (8) is several groups and is distributed in an array.

3. The high and low pressure European transformer basic mold shell structure according to claim 1, characterized in that: The card slot (53) matches the card block (51), and the card block (51) and the card slot (53) are both integrated into a whole in pairs. The number of card blocks (51) corresponding to one set of the short side shells (2) is several groups, and the movable column (543), the card column (544) and the fitting block (545) are all slidably connected to the long side shells (3).

4. A high and low pressure European transformer basic mold shell structure according to claim 3, characterized in that: One end of the clamping column (544) matches the reinforcement hole (52), the movable column (543) is a quadrangular prism structure, and the two ends of the main body are respectively connected to the clamping column (544) and the fitting block (545), the area of ​​the two ends of the movable column (543) is smaller than the area of ​​the connection surface between the clamping column (544) and the fitting block (545) and the movable column (543), the frustum block (548) is a frustum structure, and the frustum block (548) and the fitting block (545) are in line contact when they are fitted.

5. The high and low pressure European transformer basic mold shell structure according to claim 4, characterized in that: The return spring (546) is sleeved on the outer surface of the movable column (543), and the two ends of the return spring (546) are respectively connected to the long side shell (3) and the fitting block (545). The return spring (546) is used to disengage the clamping column (544) from the reinforcement hole (52), and the truncated block (548) is used to push the clamping column (544) into the reinforcement hole (52). The connecting groove (542) is connected to the reinforcement hole (52) and the bolt hole (541).

6. The high and low pressure European transformer basic mold shell structure according to claim 1, characterized in that: The first opening slot (61) matches the second card plate (63), the first card plate (62) matches the second opening slot (64), the first card plate (62) and the top shell (4) are in sliding connection, and the second card plate (63) and the short side shell (2) and the long side shell (3) are in sliding connection.

7. The high and low pressure European transformer basic mold shell structure according to claim 1, characterized in that: The number of the fixing plates (71) is four, corresponding to the plate-shaped grooves (77) on the two groups of long side shells (3) and the short side shells (2), respectively. The plate-shaped grooves (77) match the fixing plates (71), the positioning grooves (72) match one end of the engaging block (75), the engaging block (75) is slidably connected to the fixing plates (71) and the long side shells (3), and the connecting grooves (74) are connected to the through grooves (73).

8. The high and low pressure European transformer basic mold shell structure according to claim 7, characterized in that: One end of the engaging block (75) matches the through-groove (73), and the number of through-grooves (73) corresponding to one set of the long side shell (3) and the short side shell (2) is two. The number of positioning grooves (72) corresponding to one set of the fixing plate (71) is two and symmetrically distributed. The through-grooves (73) on the outer surfaces of the long side shell (3) and the short side shell (2) both penetrate the long side shell (3) and the short side shell (2).

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