Device for integrally limiting highway transporter body of megawatt unit transformer

Abstract

The utility model discloses a device for integrally limiting a highway transporter body of a million unit transformer, which relates to the field of transformers, and comprises a transformer body and a limiting device for providing buffering for the transformer body, the transformer body comprises a transformer oil tank cover, a transformer oil tank side wall, a transformer oil tank bottom, an iron core web plate upper clamping piece and an iron core web plate lower clamping piece, the side face of the transformer body is provided with a damping limiting device used for being connected with the side wall of a transformer oil tank, the iron core web upper clamping piece and the iron core web lower clamping piece. According to the utility model, the transportation requirement of over 500t level of the ultra-large-capacity generator transformer is met, the supporting strength of the transformer body is ensured, and the possible impact displacement is fully considered, so that the risk that the transformer is damaged by impact in the transportation process is reduced.

Description

Technical Field

[0001] The utility model relates to the field of transformers, in particular to a device for limiting the overall position of a transformer body for highway transportation of a million-unit unit. Background Art

[0002] In order to change the current industrial situation of "one coal dominates" in the west and north, change the extensive economic model of mining and selling coal, extend the coal-fired power industry chain, promote the economic development of coal-producing areas, improve the on-site conversion of coal, and realize the output of clean energy, it is an important measure to build ultra-large capacity and ultra-high voltage coal-fired power generation projects. This will effectively alleviate the power demand for economic development in the power load center areas of East China, reduce the pressure of primary energy transportation, strengthen environmental protection and adapt to the requirements of green and low-carbon life. Ultra-large capacity and ultra-high voltage also means that the weight and volume of the step-up transformer will increase accordingly. Therefore, for transformer manufacturers, the safe transportation of ultra-large capacity generator transformers has become a top priority. It is particularly important to ensure the safety and reliability of the body and the entire oil tank shell in harsh transportation environments. The utility model optimizes the positioning device of the overall body to effectively offset the impact that may occur during transportation, thereby ensuring the safe transportation of the body and the oil tank shell.

[0003] Therefore, it is necessary to propose a device for limiting the overall position of the transformer body for highway transportation of a million-unit unit to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a device for limiting the overall position of a transformer body during highway transportation of a million-ton unit, which can not only meet the support strength of the internal body during the transportation of the 500t-class transformer body, but also offset the impact that may occur during transportation, thereby ensuring the safe transportation of the oil tank and the body.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for limiting the overall position of a transformer body for highway transportation of a million-unit unit, comprising a body and a limiting device for providing a buffer for the body, wherein the body comprises a transformer oil tank cover, a transformer oil tank side wall, a transformer oil tank bottom, a clamp on the core web and a clamp under the core web, wherein the transformer oil tank cover is arranged above the transformer oil tank side wall, the transformer oil tank bottom is arranged below the transformer oil tank side wall, and the clamp on the core web and the clamp under the core web are respectively installed at the upper and lower ends of the transformer oil tank side wall;

[0006] The side of the device body is provided with a damping limit device for connecting the side wall of the transformer oil tank, the clamp on the core web and the clamp under the core web. There are multiple groups of damping limit devices, and the multiple groups of damping limit devices are equidistantly distributed at the upper and lower ends of the side of the device body. The damping limit device includes a limit frame, a buffer piston, a buffer limit cylinder and a guide fastening rod. The limit frame is provided with a pair, and the buffer piston and the buffer limit cylinder are respectively fixedly installed on the side of a pair of limit frames close to each other. The buffer piston extends into the buffer limit cylinder, and the buffer limit cylinder is provided with a second buffer spring that abuts against the end of the buffer piston. A connecting flange is fixedly provided at the outer circle of one end of the pair of limit frames close to each other, and the two connecting flanges are connected by a guide fastening rod. Both ends of the guide fastening rod are connected with nuts through threaded cooperation. A first buffer spring is sleeved on the guide fastening rod, and the two ends of the first buffer spring are respectively fitted on the side of two corresponding nuts close to each other.

[0007] Preferably, a body support plate and a lower limit guide column are provided at the lower end of the side wall of the transformer oil tank, the bottoms of the body support plate and the lower limit guide column are attached to the bottom of the transformer oil tank, and a plurality of the body support plate and the lower limit guide column are provided.

[0008] Preferably, an upper limit guide column is provided at the upper end of the side wall of the transformer oil tank, and a plurality of upper limit guide columns are provided. The upper limit guide column is welded and fixed to the clamp on the core web, and an upper rotating eccentric limit device cover is welded on the transformer oil tank cover, and the upper rotating eccentric limit device cover is sleeved on the outside of the upper limit guide column.

[0009] Preferably, the number of the lower limit guide posts is halved relative to the upper limit guide posts.

[0010] Preferably, a rotating eccentric limit ring assembly is provided between the upper rotating eccentric limit device cover and the upper limit guide column, the rotating eccentric limit ring assembly is in a circular structure, a circular groove is provided at the eccentric position of the rotating eccentric limit ring assembly, and the upper limit guide column extends into the circular groove.

[0011] Preferably, the rotating eccentric limiting ring assembly is made of elastic material.

[0012] Preferably, the number of the damping limit devices at the upper end of the body is greater than the number of the damping limit devices at the lower end of the body.

[0013] Preferably, a lower limit device cover is fixedly mounted on the bottom of the transformer oil tank, a lower limit annular sleeve is arranged in the lower limit device cover, and a lower limit guide column extends into the corresponding lower limit annular sleeve to achieve limiting.

[0014] Technical effects and advantages of the utility model:

[0015] It meets the transportation requirements of ultra-large capacity generator transformers above 500t, ensures the supporting strength of the device body, and fully considers the possible impact displacement, thereby reducing the risk of impact damage to the transformer during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of the device for limiting the overall position of the transformer body for highway transportation of a million-unit unit according to the utility model.

[0017] Figure 2 It is a side view of the device for limiting the overall position of the transformer body for highway transportation of a million-unit unit according to the utility model.

[0018] Figure 3 This is a schematic diagram of the structure of the damping limit device of the utility model.

[0019] Figure 4 It is a structural schematic diagram of the upper rotating eccentric limiting device of the utility model.

[0020] Figure 5 It is a schematic diagram of the circular groove structure in the upper rotating eccentric limiting device of the utility model.

[0021] In the figure: transformer oil tank cover 1, transformer oil tank side wall 2, transformer oil tank bottom 3, core web upper clamp 4, upper rotary eccentric limit device cover 5, upper limit guide column 6, rotary eccentric limit ring assembly 7, rectangular limit block 8, body support plate 9, lower limit guide column 10, lower limit annular sleeve 11, side limit baffle 12, damping limit device 13, lower limit device cover 14, first buffer spring 15, buffer piston 16, second buffer spring 17, guide fastening rod 18, buffer limit cylinder 19, core web lower clamp 20, limit frame 21. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model provides Figure 1-Figure 5 The device shown is a device for limiting the overall position of a transformer body for highway transportation of a million-unit unit.

[0024] Refer to the attached Figure 1 , Figure 2The frame of the million-unit transformer road transport body (hereinafter referred to as the body) is composed of a transformer oil tank cover 1, a transformer oil tank side wall 2, a transformer oil tank bottom 3, a core web upper clamp 4 and a core web lower clamp 20. The transformer oil tank cover 1 is arranged above the transformer oil tank side wall 2, the transformer oil tank bottom 3 is arranged below the transformer oil tank side wall 2, and the core web upper clamp 4 and the core web lower clamp 20 are respectively installed at the upper and lower ends of the transformer oil tank side wall 2.

[0025] The overall frames of the device body are connected by limit devices in six directions. The lower end of the transformer oil tank side wall 2 is provided with a device body support plate 9 and a lower limit guide column 10. The bottoms of the device body support plate 9 and the lower limit guide column 10 are attached to the transformer oil tank bottom 3. There are multiple device body support plates 9 and lower limit guide columns 10. The weight of the device body of a large-capacity transformer is very large, so the weight of the entire device body is transmitted to the transformer oil tank bottom 3 through the device body support plate 9 and the lower limit guide column 10.

[0026] A lower limit device cover 14 is also fixedly mounted on the bottom 3 of the transformer oil tank. A lower limit annular sleeve 11 is arranged in the lower limit device cover 14. The lower limit guide column 10 extends into the corresponding lower limit annular sleeve 11 to achieve limiting. The lower limit annular sleeve 11 is made of elastic material.

[0027] An upper limit guide column 6 is arranged above the body; a damping limit device 13 is arranged on the side of the body, and multiple groups of damping limit devices 13 are arranged, and multiple groups of damping limit devices 13 are equidistantly distributed at the upper and lower ends of the side of the body. The damping limit device 13 includes a limit frame 21, a buffer piston 16, a buffer limit cylinder 19 and a guide fastening rod 18. The limit frame 21 is provided with a pair of buffer pistons 16 and buffer limit cylinders 19. They are respectively fixedly installed on the side of a pair of limit frames 21 close to each other, and the buffer pistons 16 extends into the buffer limit cylinder 19, and a second buffer spring 17 is arranged in the buffer limit cylinder 19 to abut against the end of the buffer piston 16. A pair of limit frames 21 are fixedly provided with connecting flanges at the outer circles of the ends close to each other. The two connecting flanges are connected by a guide fastening rod 18. Both ends of the guide fastening rod 18 are connected with nuts through threaded cooperation. A first buffer spring 15 is sleeved on the guide fastening rod 18, and the two ends of the first buffer spring 15 are respectively fitted on the sides of two corresponding nuts close to each other.

[0028] The body support plate 9 bears most of the weight transfer. Through calculation, it is known that the main force on this part is static friction, that is, the displacement is minimal. In this way, the number of lower limit guide posts 10 can be halved or less than that of the upper limit guide posts 6. The same principle can also be followed for the number of side damping limit devices 13.

[0029] The upper limit guide column 6 is effectively welded to the clamp 4 on the core web, and the upper rotation eccentric limit device cover 5 is effectively welded to the transformer oil tank cover 1. After the transformer oil tank cover 1 is buckled, the upper limit guide column 6 is ensured to be just inserted into the upper rotation eccentric limit device cover 5. In view of the manufacturing tolerance and assembly tolerance, a rotation eccentric limit ring assembly 7 is provided between the upper rotation eccentric limit device cover 5 and the upper limit guide column 6, which solves the problem of failure to assemble or buckle the cover caused by the new error. The material of the rotation eccentric limit ring assembly 7 can be elastic material, which can easily solve the permanent damage to the transformer oil tank cover 1 or the clamp 4 on the core web caused by the displacement of the upper part due to the impact.

[0030] Specifically, the rotating eccentric limiting ring assembly part 7 is of a circular structure, a circular groove is provided at an eccentric position of the rotating eccentric limiting ring assembly part 7, and the upper limit guide column 6 extends into the circular groove.

[0031] The damping limit device 13 is used to connect the transformer oil tank side wall 2, the core web upper clamp 4 and the core web lower clamp 20. When assembling the damping limit device 13, first install the two limit frames 21 on the transformer oil tank side wall 2, the core web upper clamp 4 and the core web lower clamp 20 respectively. When fixing the limit frame 21, put the second buffer spring 17 first, then put the first buffer spring 15 and fix it with the guide fastening rod 18. Adjust the nuts at both ends to make the buffer piston 16 extend into the buffer limit cylinder 19. Lock the nuts on both sides of the guide fastening rod 18 according to the different weights of the body and transportation conditions. The impact displacement suffered by the upper part of the body may be relatively large according to the transportation conditions. Therefore, the number of damping limit devices 13 set on the upper part of the body is more than that on the lower part. The damping limit devices 13 effectively offset the impact force.

[0032] The side of the transformer body is also provided with a side limit baffle 12, and the rectangular limit blocks 8 are placed at both ends of the transformer body and are clamped and limited by the side limit baffle 12 and the support plates on both sides of the transformer body to ensure that the transformer body will not be displaced in the long axis direction. In this way, a surrounding limit structure for the entire transformer body in all directions is formed, which improves the impact resistance of the heavy transformer, reduces the irreparable structural deformation caused by the slipping or swinging of the transformer body during transportation, and ensures production efficiency.

[0033] The utility model also discloses a method for limiting the overall position of a transformer body for highway transportation of a million-unit unit. The method uses a device for limiting the overall position of a transformer body for highway transportation of a million-unit unit to limit the position of the transformer body. The specific limiting method includes the following steps:

[0034] Step 1: First build the frame, build the body according to the specific composition of the body in the device for limiting the overall position of the body of the above-mentioned million-unit transformer road transport, and then assemble the body support plate 9, the lower limit guide column 10 and the upper limit guide column 6;

[0035] The second step: install the limit device, install the rotating eccentric limit ring assembly 7 between the upper rotating eccentric limit device cover 5 and the upper limit guide column 6, install a suitable number of damping limit devices 13 at the upper and lower ends of the side of the device body, assemble the damping limit devices 13 and the rectangular limit blocks 9 to form a surrounding limit structure for the device body in all directions.

[0036] The transformer body is fixed by the limit device arranged between the upper and lower clamps of the core (the clamp 4 on the core web and the clamp 20 on the core web) and the oil tank body. When the transformer body is transported, even if an impact occurs, the limit device can be used to offset the displacement of the transformer body and reduce the stress caused by the displacement, thereby solving the problem of permanent deformation or damage of the oil tank body caused by stress concentration due to impact.

[0037] The limit device set between the body and the oil tank has the function of absorbing vibration and impact force, reducing the irreversible damage caused by the displacement of the body. The limit device has the function of automatic adjustment and elastic constraint, providing the overall limit of the body with both reliability and strength requirements.

Claims

1. A device for limiting the overall position of a transformer body for highway transportation of a million-unit unit, comprising a body and a limiting device for providing buffering for the body, characterized in that: The transformer body comprises a transformer oil tank cover (1), a transformer oil tank side wall (2), a transformer oil tank bottom (3), an iron core web upper clamp (4) and an iron core web lower clamp (20), wherein the transformer oil tank cover (1) is arranged above the transformer oil tank side wall (2), the transformer oil tank bottom (3) is arranged below the transformer oil tank side wall (2), and the iron core web upper clamp (4) and the iron core web lower clamp (20) are respectively mounted at the upper and lower ends of the transformer oil tank side wall (2); The side of the transformer body is provided with a damping limit device (13) for connecting the transformer oil tank side wall (2), the core web upper clamp (4) and the core web lower clamp (20). The damping limit device (13) is provided with multiple groups, and the multiple groups of damping limit devices (13) are distributed at equal distances at the upper and lower ends of the side of the transformer body. The damping limit device (13) comprises a limit frame (21), a buffer piston (16), a buffer limit cylinder (19) and a guide fastening rod (18). The limit frame (21) is provided with a pair, and the buffer piston (16) and the buffer limit cylinder (19) are respectively fixedly mounted on a pair of limit frames (21). ) on a side close to each other, the buffer piston (16) extends into the buffer limit cylinder (19), and a second buffer spring (17) is arranged in the buffer limit cylinder (19) to abut against the end of the buffer piston (16). A pair of limit frames (21) are fixedly provided with connecting flanges at the outer rings of the ends close to each other, and the two connecting flanges are connected by a guide fastening rod (18), and both ends of the guide fastening rod (18) are connected with nuts through threaded matching. A first buffer spring (15) is sleeved on the guide fastening rod (18), and the two ends of the first buffer spring (15) are respectively fitted on the sides of the two corresponding nuts close to each other.

2. The device for limiting the overall position of a transformer body for highway transportation of a million-unit unit according to claim 1 is characterized by: A body support plate (9) and a lower limit guide column (10) are provided at the lower end of the transformer oil tank side wall (2); the bottoms of the body support plate (9) and the lower limit guide column (10) are attached to the bottom (3) of the transformer oil tank; and a plurality of the body support plate (9) and the lower limit guide column (10) are provided.

3. The device for limiting the overall position of a transformer body for highway transportation of a million-unit unit according to claim 2 is characterized by: An upper limit guide column (6) is arranged at the upper end of the transformer oil tank side wall (2), a plurality of upper limit guide columns (6) are arranged, and the upper limit guide column (6) is welded and fixed to the clamp (4) on the core web, and an upper rotating eccentric limiting device outer cover (5) is welded on the transformer oil tank cover (1), and the upper rotating eccentric limiting device outer cover (5) is sleeved on the outer side of the upper limit guide column (6).

4. The device for limiting the overall position of a transformer body for highway transportation of a million-unit unit according to claim 3 is characterized by: The number of the lower limit guide columns (10) is halved compared to the number of the upper limit guide columns (6).

5. The device for limiting the overall position of a transformer body for highway transportation of a million-unit unit according to claim 3 is characterized by: A rotating eccentric limiting ring assembly (7) is provided between the upper rotating eccentric limiting device outer cover (5) and the upper limit guiding column (6); the rotating eccentric limiting ring assembly (7) is of a circular structure; a circular groove is provided at an eccentric position of the rotating eccentric limiting ring assembly (7), and the upper limit guiding column (6) extends into the circular groove.

6. The device for limiting the overall position of a transformer body for highway transportation of a million-unit unit according to claim 5 is characterized by: The rotating eccentric limiting ring assembly (7) is made of elastic material.

7. The device for limiting the overall position of a transformer body for highway transportation of a million-unit unit according to claim 1 is characterized by: The number of the damping limit devices (13) at the upper end of the body is greater than the number of the damping limit devices (13) at the lower end of the body.

8. The device for limiting the overall position of a transformer body for highway transportation of a million-unit unit according to claim 2 is characterized by: A lower limit device outer cover (14) is also fixedly mounted on the bottom (3) of the transformer oil tank, a lower limit annular sleeve (11) is arranged in the lower limit device outer cover (14), and a lower limit guide column (10) extends into the corresponding lower limit annular sleeve (11) to achieve limit.

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