Flexible direct current transformer valve side partition plate system supporting strip fixing structure

Abstract

The invention discloses a flexible direct-current transformer valve side partition plate system supporting strip fixing structure, and relates to the technical field of flexible direct-current transformer equipment, the flexible direct-current transformer valve side partition plate system supporting strip fixing structure comprises a partition plate system main body, the partition plate system main body is arranged in an ascending flanged base, and the partition plate system main body comprises an abutting part; the fixing assembly comprises a supporting strip and a locking assembly, the supporting strip is arranged between the partition plate system body and the ascending flanged base, the supporting strip is fixedly connected with the ascending flanged base through the locking assembly, the supporting strip comprises a wedge part, and the wedge part is matched with the abutting part in a friction abutting mode; according to the flexible direct current transformer valve side partition plate system supporting strip fixing structure, the supporting strip is arranged between the partition plate system body and the ascending flanged base, and the wedge part of the supporting strip abuts against the abutting part of the partition plate system body, so that tight supporting installation of the partition plate system body relative to the ascending flanged base is achieved, and the vibration influence generated in the transportation process is overcome.

Description

Technical Field

[0001] This invention belongs to the technical field of flexible DC transformer equipment, specifically relating to a support bar fixing structure for a valve-side partition system of a flexible DC transformer. Background Technology

[0002] Flexible DC transmission is an important piece of equipment for building smart grids. Compared with traditional methods, flexible DC transmission has strong technical advantages in areas such as isolated power supply, capacity expansion and upgrading of urban distribution networks, interconnection of AC systems, and grid connection of large-scale wind farms. It is a strategic choice to change the development pattern of large power grids.

[0003] With the continuous development of flexible DC transmission projects, the demand for flexible DC transformers, as the main equipment of converter stations, is also increasing. The valve-side lead plate system is one of the most critical components of a flexible DC transformer, and the connection of the valve-side leads is the core technology of the entire valve-side lead system. Due to its complex design, process, and manufacturing flow, it directly affects the overall development of my country's flexible DC transmission projects and restricts the development of the entire flexible DC transformer. Therefore, it is imperative to develop a new valve-side lead fixing structure. Summary of the Invention

[0004] The purpose of this invention is to provide a simple and reasonably designed support bar fixing structure for a flexible transformer valve side baffle system in order to solve the above-mentioned problems.

[0005] The present invention achieves the above objectives through the following technical solutions: A support bar fixing structure for a valve-side diaphragm system of a flexible DC transformer includes: The main body of the partition system is located inside the raised seat, and the main body of the partition system includes an abutment part; The fixing component includes a support bar and a locking component. The support bar is disposed between the main body of the partition system and the riser seat. The support bar is fixedly connected to the riser seat through the locking component. The support bar includes a wedge portion, which frictionally abuts against an abutment portion.

[0006] As a further optimization of the present invention, multiple support bars are provided, and the multiple support bars are correspondingly provided with locking components, and the multiple support bars are distributed circumferentially along the center line of the lifting seat.

[0007] As a further optimization of the present invention, the abutting part includes a socket and a support rod. The lower end of the support rod is fixedly installed in the socket, the upper end of the support rod has a first wedge surface, and the wedge part has a second wedge surface. The first wedge surface and the second wedge surface rub against each other.

[0008] As a further optimization of the present invention, the second wedge surface is disposed on the side facing the main body of the partition system.

[0009] As a further optimization of the present invention, the second wedge surface is disposed on the side away from the main body of the partition system.

[0010] As a further optimization of the present invention, the support bar also includes a vertical portion, the side of the vertical portion facing the inner wall of the lifting seat rubbing against the inner wall of the lifting seat.

[0011] As a further optimization of the present invention, the locking assembly includes a locking plate and a fastener, the upper end of the support bar has a slot, the locking plate is engaged with the support bar through the slot, and the locking plate is fixedly connected to the lifting seat through the fastener.

[0012] As a further optimization of the present invention, the card plate is provided with an axial elongated hole, and the fastener is fixedly connected to the card plate through the axial elongated hole.

[0013] As a further optimization of the present invention, the axial elongated holes are arranged in pairs, and when the clamping plate is in the locking position, the paired axial elongated holes are symmetrically distributed about the support bar.

[0014] The present invention has at least the following beneficial effects: The present invention provides a support bar fixing structure for a valve side diaphragm system of a flexible DC transformer, including a diaphragm system body and a fixing component. The diaphragm system body is disposed in a riser seat. The fixing component includes a support bar and a locking component. The support bar is disposed between the diaphragm system body and the riser seat. The support bar is fixedly connected to the riser seat through the locking component. The support bar includes a wedge portion, which frictionally abuts against the abutting portion. By disposing the support bar between the diaphragm system body and the riser seat, and by utilizing the abutting portion of the support bar against the abutting portion of the diaphragm system body, the diaphragm system body is tightened relative to the riser seat, thereby overcoming the vibration effects generated during transportation. Moreover, the locking assembly includes a locking plate and fasteners. The locking plate is installed onto the support bar through a slot on the support bar, and the fasteners are used to install the locking plate onto the riser. The circumferential distribution of multiple support bars allows each support bar to be independently adjusted in insertion depth when tightened, and ensures a tight fit in the entire circumference regardless of the gap distribution, further improving the versatility and assembly flexibility of the structure and reducing production and construction costs. The card plate has axial elongated holes, which are arranged in pairs. Fasteners are set in corresponding positions to the axial elongated holes. The card plate is locked by the paired fasteners, thereby realizing the symmetrical traction effect of the card plate on the support bar. That is, the card plate fixes the support bar in a clamp-like manner, so as to ensure the reliable installation of the support bar. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2; Figure 3 This is a schematic diagram of the front structure of the card plate of the present invention; Figure 4 This is a side view of the support bar structure of the present invention; Figure 5 This is the present invention. Figure 4 Right view structural diagram of the central support bar; Figure 6 This is the present invention. Figure 4 A schematic diagram of the structure from below for the central support bar.

[0016] In the diagram: 1. Support bar; 11. Wedge; 12. Vertical part; 13. Slot; 2. Clamping plate; 21. Axial elongated hole; 3. Main body of partition system; 31. Socket; 32. Support rod; 4. Elevator; 5. Fastener. Detailed Implementation

[0017] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0018] like Figure 1 and Figure 2 As shown, the present invention provides a support bar fixing structure for a valve-side diaphragm system of a flexible DC transformer, comprising: The partition system body 3 is disposed inside the lifting seat 4, and the partition system body 3 includes an abutment part; The fixing component includes a support bar 1 and a locking component. The support bar 1 is disposed between the main body 3 of the partition system and the lifting seat 4. The support bar 1 is fixedly connected to the lifting seat 4 through the locking component. The support bar 1 includes a wedge 11, which frictionally abuts against the abutting part.

[0019] It should be noted that the main body 3 of the baffle system, as the core load-bearing structure, has a reserved channel for the valve side lead wire inside, and the whole can be directly installed into the riser seat 4. The valve side lead wire is the key line connecting the transformer and the external converter valve. The riser seat 4 is cylindrical in shape, and the bottom of the riser seat 4 is connected to the transformer body to accommodate the baffle system.

[0020] In the above embodiment, there is a gap between the partition system body 3 and the lifting seat 4. By setting a support bar 1 between the partition system body 3 and the lifting seat 4, and by using the abutment of the wedge 11 of the support bar 1 and the abutment of the abutment of the partition system body 3, the partition system body 3 is tightened relative to the lifting seat 4, which solves the problem of tightening the partition system body 3 and the lifting seat 4, and also overcomes the vibration effect generated during transportation.

[0021] like Figure 1 and Figure 2 As shown, there are multiple support bars 1, which are correspondingly arranged with the locking assembly. The multiple support bars 1 are distributed circumferentially along the axis of the lifting seat 4.

[0022] In the above embodiment, the main body 3 of the diaphragm system serves as the core load-bearing structure for the valve-side lead wire and must withstand the forces of lead wire tension and equipment vibration over a long period of time. Multiple support bars 1 are evenly distributed circumferentially to form a ring support matrix. With the wedge-shaped friction contact between each support bar 1 and the contact part, as well as the fixing of the locking assembly, a comprehensive and seamless fixed protection is constructed. This disperses the external forces on the main body 3 of the diaphragm system to multiple support points, thus achieving multi-point support for the main body 3 of the diaphragm system. Even in the event of strong vibration, each support bar 1 works together and supports each other, effectively offsetting the impact of vibration and preventing the main body 3 of the diaphragm system from shifting relative to the raised seat 4. This ensures that the valve-side lead wire channel remains stable and avoids safety hazards such as poor lead wire contact and insulation damage. Moreover, the size, weight, and stress conditions of the main body 3 of the baffle system vary for flexible DC transformers of different voltage levels and specifications. The circumferential distribution design of multiple support bars 1 can be adapted to different specifications of equipment by adjusting the number and spacing of the support bars 1 without making major modifications to the overall structure. At the same time, multi-point support can better cope with the installation tolerance between the riser 4 and the main body 3 of the baffle system. The insertion depth of each support bar 1 can be adjusted independently to ensure that a tight fit can be achieved in the entire circumference regardless of the gap distribution, which further improves the versatility and assembly flexibility of the structure and reduces production and construction costs.

[0023] For example, see [link to relevant documentation]. Figure 2 The abutting part includes a socket 31 and a support rod 32. The lower end of the support rod 32 is fixedly installed in the socket 31. The upper end of the support rod 32 has a first wedge surface, and the wedge part 11 has a second wedge surface. The first wedge surface and the second wedge surface rub against each other.

[0024] The frictional contact between the first wedge surface of the strut 32 and the second wedge surface of the wedge 11 generates a lateral compressive force when subjected to force. When the locking assembly tightens and fixes the strut 1, the compressive force between the wedge surfaces will increase with the increase of the locking force, forming a self-locking effect. This avoids the problem of easy loosening in traditional planar contact. This cooperation method can efficiently convert the locking force of the strut 1 into the supporting force of the main body 3 of the partition system, and achieve the supporting and fixing of the main body 3 of the partition system. Even if it is subjected to equipment vibration for a long time, it can maintain a stable fit and eliminate the risk of displacement. Moreover, the double-wedge surface fit design increases the contact area of ​​the force-bearing surface, reduces the pressure per unit area, and effectively prevents the wedge surface from wearing or deforming due to stress concentration. At the same time, this modular contact structure makes the force transmission path clear and specific, from the support bar 1 through the double wedge surface to the support rod 32, and then evenly distributed to the main body 3 of the partition system via the socket 31, which significantly improves the load-bearing limit of the entire structure and is suitable for the force requirements of high voltage level flexible DC transformers.

[0025] Among them, such as Figure 2 and Figure 4 As shown, the support bar 1 also includes a vertical part 12. Under the action of the locking assembly, the side of the vertical part 12 facing the inner wall of the lifting seat 4 rubs against the inner wall of the lifting seat 4.

[0026] In the above embodiment, the vertical part 12 forms a surface contact with the inner wall of the lifting seat 4 to increase the abutment support surface between the support bar 1 and the lifting seat 4; Furthermore, the frictional contact between the vertical part 12 and the inner wall of the lifting seat 4, combined with the wedge surface of the wedge part 11, causes the support bar 1 to be simultaneously constrained in both the horizontal direction (the supporting force of the inner wall of the lifting seat 4) and the oblique direction (the compressive force of the first wedge surface), forming a two-way limiting structure. This design can effectively resist the lateral impact force generated by equipment vibration and transportation bumps, prevent the support bar 1 from shifting or loosening, and ensure the stability of the overall structure.

[0027] The second wedge surface is positioned on the side facing the main body 3 of the partition system, i.e. Figure 2 As shown, the back sides of both the vertical part 12 and the wedge part 11 abut against the inner wall of the riser 4. That is, the support bar 1 is located between the abutment part and the riser 4. The support bar 1 is inserted from top to bottom into the gap between the abutment part and the riser 4, and the support bar 1 presses against both, thus acting as a fixed bridge to achieve the fixed installation between the partition system body 3 and the riser 4. Furthermore, the position of the support bar 1 is locked by a locking assembly to prevent it from loosening due to vibration during equipment operation or transportation. It should be noted that the pressing force of the support bar 1 on the abutment part is directed towards the partition system body 3. It should also be noted that the back sides of the vertical part 12 and the wedge part 11 have an arc-shaped structure, as shown... Figure 6 As shown, the arc-shaped structure can be adapted to the inner arc-shaped surface of the riser 4.

[0028] In other embodiments, the second wedge surface is disposed on the side away from the main body 3 of the partition system, that is, the wedge 11 is located on the side of the abutment portion away from the lifting seat 4. The support bar 1 is inserted from top to bottom into the gap on the side of the abutment portion away from the lifting seat 4, and the support bar 1 is abutted against the inner wall of the lifting seat 4 by means of the locking assembly, so that the support bar 1 indirectly clamps and fixes the main body 3 of the partition system by squeezing and holding the abutment portion. It should be noted that at this time, the squeezing force of the support bar 1 on the abutment portion is in the direction away from the main body 3 of the partition system.

[0029] For example, see [link to relevant documentation]. Figure 2 and Figure 4 The locking assembly includes a locking plate 2 and a fastener 5. A slot 13 is provided at the upper end of the support bar 1. The locking plate 2 engages with the support bar 1 through the slot 13, and the locking plate 2 is fixedly connected to the riser 4 through the fastener 5. After the support bar 1 is positioned, the locking plate 2 is placed into the slot 13, forming a tight engagement with the support bar 1 through the slot 13. The fastener 5 then fixes the locking plate 2 to the riser 4, thus fixing the position of the support bar 1. The operation is simple and easy to understand, requiring no complex tools or professional skills. This convenience significantly shortens assembly time, improves construction efficiency, reduces human error during assembly, lowers construction costs and reduces the difficulty of later maintenance, and is suitable for large-scale engineering applications. For example, the fastener 5 is a combination of a bolt and a nut, with a diameter adapted to the axial elongated hole 21 of the locking plate 2. The material can be a rust-resistant and insulating metal, such as galvanized steel with an insulating coating.

[0030] For example, see [link to relevant documentation]. Figure 3 The clamping plate 2 has an axial elongated hole 21, and the fastener 5 is fixedly connected to the clamping plate 2 through the axial elongated hole 21. Axial refers to the direction of the axis of the lifting seat 4. The insertion depth of the support bar 1 is adjusted according to the magnitude of the squeezing force of the support bar 1 on the abutment part, which directly causes the height position of the clamping plate 2 to change. The axial elongated hole 21 provides sufficient adjustment space along the axis of the lifting seat. No matter how the insertion depth of the support bar 1 is adjusted, the fastener 5 can be accurately aligned with the mounting hole of the lifting seat 4 within the range of the elongated hole. That is, there is no need to accurately calibrate the height of the clamping plate 2 during assembly. After adjusting it according to the squeezing effect of the support bar 1, the fastener 5 can be directly locked within the range of the axial elongated hole 21, avoiding assembly jamming caused by height misalignment and ensuring stable fixation after the squeezing force is adjusted as needed.

[0031] It should be noted that, as Figure 2 and Figure 3 As shown, the axial elongated holes 21 are arranged in pairs. When the clamping plate 2 is in the locked position, the paired axial elongated holes 21 are symmetrically distributed about the support bar 1, and the fastener 5 is arranged correspondingly to the axial elongated holes 21.

[0032] In the above embodiment, the fasteners 5, arranged in pairs, lock the clamping plate 2. The paired symmetrical axial elongated holes and the fasteners form a bidirectional locking force, which generates a uniform and symmetrical traction effect on the support bar 1, avoiding the force offset caused by traditional unilateral fixing. This clamp-type fixing ensures that the support bar 1 is subjected to a balanced constraint force in the lateral direction, always maintaining a tight fit with the abutment part and the lifting seat 4, preventing loosening or tilting caused by excessive force on one side, and ensuring long-term stability of the tightened state.

[0033] It should be noted that, in use, the valve side diaphragm system support bar fixing structure of the flexible DC transformer is as follows: the diaphragm system body 3 is placed in the riser seat 4, and then the support bar 1 is vertically inserted into the gap between the diaphragm system body 3 and the riser seat 4, and the second wedge surface of the wedge portion 11 of the support bar 1 and the first wedge surface of the abutment portion of the diaphragm system body 3 are rubbed together. Then, the clamping plate 2 is inserted into the slot 13, and the clamping plate 2 and the riser seat 4 are fixed together by the fastener 5, thereby fixing the position of the support bar 1. The clamping plate 2 has an axial long hole 21, which is set in pairs. The fasteners 5 are set in corresponding positions to the axial long holes 21. By locking the clamping plate 2 with the pair of fasteners 5, the clamping plate 2 can achieve a symmetrical traction effect on the support bar 1, that is, the clamping plate 2 can fix the support bar 1 in a clamping manner.

[0034] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A support bar fixing structure for a valve-side diaphragm system of a flexible DC transformer, characterized in that, include: The fixing component includes a support bar (1) and a locking component. The support bar (1) is disposed between the main body (3) of the partition system and the lifting seat (4). The support bar (1) is fixedly connected to the lifting seat (4) through the locking component. The support bar (1) includes a wedge (11), which is in frictional contact with the abutment portion.

2. The support bar fixing structure for a flexible DC transformer valve side diaphragm system according to claim 1, characterized in that, The support bar (1) is provided in multiple ways, and the multiple support bars (1) are provided in correspondence with the locking component. The multiple support bars (1) are distributed circumferentially along the axis of the lifting seat (4).

3. The support bar fixing structure for a flexible DC transformer valve side diaphragm system according to claim 2, characterized in that, The abutting part includes a socket (31) and a support rod (32). The lower end of the support rod (32) is fixedly installed in the socket (31). The upper end of the support rod (32) has a first wedge surface, and the wedge (11) has a second wedge surface. The first wedge surface and the second wedge surface rub against each other.

4. The support bar fixing structure for a flexible DC transformer valve side diaphragm system according to claim 3, characterized in that, The second wedge surface is disposed on one side facing the main body (3) of the partition system.

5. The support bar fixing structure for a valve-side diaphragm system of a flexible DC transformer according to claim 3, characterized in that, The second wedge surface is positioned on the side away from the main body (3) of the partition system.

6. A support bar fixing structure for a valve-side diaphragm system of a flexible DC transformer according to claim 4 or 5, characterized in that, The support bar (1) also includes a vertical part (12), the side of the vertical part (12) facing the inner wall of the lifting seat (4) rubbing against the inner wall of the lifting seat (4).

7. The support bar fixing structure for a flexible DC transformer valve side diaphragm system according to claim 6, characterized in that, The locking assembly includes a locking plate (2) and a fastener (5). The upper end of the support bar (1) is provided with a slot (13). The locking plate (2) is engaged with the support bar (1) through the slot (13). The locking plate (2) is fixedly connected to the lifting seat (4) through the fastener (5).

8. The support bar fixing structure for a valve-side diaphragm system of a flexible DC transformer according to claim 7, characterized in that, The card plate (2) has an axial elongated hole (21), and the fastener (5) is fixedly connected to the card plate (2) through the axial elongated hole (21).

9. The support bar fixing structure for a valve-side diaphragm system of a flexible DC transformer according to claim 8, characterized in that, The axial elongated holes (21) are arranged in pairs. When the clamping plate (2) is in the locked position, the paired axial elongated holes (21) are symmetrically distributed about the support bar (1).

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