A transformer heat dissipation and cooling pipe support structure

Abstract

The present invention relates to a support structure for transformer laminations and cooling manifolds, belonging to the field of transformer manufacturing. The lamination support structure comprises a lamination fastening structure fixedly mounted on the laminations and a lamination diagonal structure located between the laminations and the cooling manifolds. The cooling manifold support structure comprises an upper support for the cooling manifolds, a middle support for the cooling manifolds, and a lower support for the cooling manifolds. The lamination fastening structure is fixedly mounted on the upper and lower sides of several groups of laminations, respectively. The lamination fastening structure comprises a fixing plate A and a fixing plate B. The lamination diagonal structure comprises a hanging plate, a clamping ring, a tie rod, and a fixing plate C. The hanging plate is welded at an inclined angle to the upper end of the cooling manifolds. The fixing plate C is mounted on the lower side of a group of laminations away from the cooling manifolds. The upper end of the tie rod is fixedly connected to the hanging plate via a clamping ring, and the lower end of the tie rod is fixedly connected to the fixing plate C. The present invention can improve the seismic performance of the transformer laminations and cooling manifolds, thereby improving the overall seismic resistance level of the transformer.

Description

Technical Field

[0001] The invention relates to a seismic-resistant transformer lamination and cooling pipe support structure, belonging to the technical field of transformer manufacturing. Background Art

[0002] In areas with higher seismic intensity, transformers require higher seismic performance. For State Grid Corporation projects, transformer seismic performance must be considered if the installation area has a seismic intensity exceeding 7. This is especially true for areas with a seismic intensity of 9.

[0003] For transformers, there are two main factors that affect seismic performance. The first is the bushing, which is mainly due to its high installation height and high seismic resistance requirements. By selecting special bushings that meet the seismic resistance level of level 9, the bushing requirements of this project can be met. The other is the cooling fins and their cooling couplings, which are cantilever beam structures with poor seismic performance. Therefore, it is necessary to invent a seismic-resistant transformer fin and cooling coupling support structure to improve the seismic resistance of the fins and cooling couplings, thereby ensuring that the transformer as a whole meets the seismic resistance requirements of level 9. Summary of the Invention

[0004] To address the problem that the transformer heat sink and cooling pipe are cantilever beam structures with poor seismic performance, the present invention adopts the following technical solutions:

[0005] A seismic-resistant transformer lamination and cooling coupling support structure, wherein the lamination support structure comprises a lamination fastening structure fixedly mounted on the lamination and a lamination inclined-tension structure located between the lamination and the cooling coupling, and the cooling coupling support structure comprises an upper cooling coupling support, a middle cooling coupling support, and a lower cooling coupling support;

[0006] The sheet-dispersed fastening structure is respectively fixedly installed on the upper and lower sides of several groups of sheet-dispersed sheets. The sheet-dispersed fastening structure includes a fixing plate A and a fixing plate B. A pair of fixing plates A are welded and fixed together at the middle position. A pair of fixing plates A are cross-crossed at 90°. Mounting holes are respectively opened at both ends of a pair of fixing plates A. Mounting bases with internal threads are welded and installed at the positions of the corresponding mounting holes of two adjacent groups of sheet-dispersed sheets. The mounting bolts are screwed into the mounting base through the mounting holes of the fixing plate A. The fixing plates B are welded and fixedly installed at the edge positions of the sheet-dispersed sheets on both sides of the fixing plate A; the sheet-dispersed oblique-pull structure includes: a hanging plate, a clamping ring, a pull rod and a fixing plate C. A hanging plate with an inclined angle is welded at the upper end of the cooling link pipe. The fixing plate C is fixedly installed on the lower side of a group of sheet-dispersed sheets away from the cooling link pipe. The upper end of the pull rod is fixedly connected to the hanging plate through a clamping ring, and the lower end of the pull rod is fixedly connected to the fixing plate C.

[0007] Preferably, a connecting hole 1 is provided on the hanging plate, and a connecting hole 2 is provided on the upper end of the pull rod. The hanging plate and the pull rod are fixedly connected by a retaining ring passing through the connecting hole 1 and the connecting hole 2. The fixing plate C adopts an equilateral angle steel. The horizontal opening of the fixing plate C is fixedly installed to a group of scattered lower side surfaces of the cooling coupling far away by a full-thread screw 1 and a fixing nut. The lower end of the pull rod is welded with a fixing plate D with an internal threaded hole. The pull rod and the fixing plate D pass through the fixing plate C. The upper end of the full-thread screw 2 is screwed into the internal threaded hole of the fixing plate D. The lower end of the full-thread screw 2 is fastened by a fastening nut, and a fixing block is provided before the fastening nut.

[0008] Preferably, the pull rod is made of seamless steel pipe.

[0009] Preferably, the fixing plate A is an equilateral angle steel, and the fixing plate B is a long strip of equilateral angle steel.

[0010] Preferably, the upper support of the cooling link includes an upper fixing plate, an upper support base and an upper support rod. The upper fixing plate is fixedly installed on the upper part of the cooling link by welding. The upper support base is fixedly installed on the upper part of the oil tank body by welding. Upper connecting holes are respectively opened on the upper fixing plate and the upper support base. Holes are respectively opened at both ends of the upper support rod. The upper support rod is fixedly connected to the upper fixing plate and the upper support base by bolts.

[0011] Preferably, the middle support of the cooling link includes a middle support rod and a middle support base. The middle support base is fixedly installed on the side wall of the oil tank body by welding, and the two ends of the middle support rod are respectively fixedly connected to the middle of the cooling link and the middle support base by welding.

[0012] Preferably, the lower support of the cooling connecting pipe includes a lower support bracket and a lower support base. The lower support base is fixedly installed on the side wall of the oil tank body by welding. The lower support bracket is a rectangular structure with different thicknesses at both ends. The end of the lower support bracket with a larger thickness is fixedly connected to the lower support base by welding.

[0013] Preferably, a lower support block 1 is arranged between the lower support bracket and the cooling connecting pipe, and a lower support block 2 is arranged between the lower support bracket and the sheet disperser. The lower support block 1 and the lower support block 2 are fixedly installed on the upper surface of the lower support bracket by bolt connection.

[0014] The advantages of the present invention are as follows:

[0015] The present invention designs a seismic-resistant transformer lamination and cooling tube support structure, which can improve the seismic performance of the transformer lamination and cooling tube, thereby improving the overall seismic resistance level of the transformer, which is of great significance to the safe and stable operation of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings described below are some specific embodiments of the present invention. For those of ordinary skill in the art, without inventive effort, other drawings within the scope of protection of this application can be derived from these drawings.

[0017] Figure 1 Schematic diagram of a transformer heat sink and cooling pipe support structure according to an embodiment of the present invention;

[0018] Figure 2 A schematic diagram of a sheet-dispersed fastening structure according to an embodiment of the present invention;

[0019] Figure 3 A schematic diagram of a sheet-dispersed oblique-stayed structure according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic structural diagram of a snap ring according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic structural diagram of the upper support of the cooling coupling according to an embodiment of the present invention;

[0022] Figure 6 This is a schematic structural diagram of the middle support of the cooling pipe according to an embodiment of the present invention;

[0023] Figure 7 This is a schematic structural diagram of the lower support of the cooling coupling according to an embodiment of the present invention;

[0024] Among them, 1-sheet scatter, 2-fixed plate A, 3-fixed plate B, 4-hanging plate, 5-clamping ring, 6-pull rod, 7-fixed plate C, 8-fixed block, 9-cooling coupling upper support, 10-cooling coupling middle support, 11-cooling coupling lower support, 12-cooling coupling. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, but not all of the embodiments.

[0026] like Figure 1 The figure shows a seismic-resistant transformer lamination and cooling header support structure, which consists of two parts: the lamination support structure 1 and the cooling header support structure 12. The lamination support structure 1 includes a lamination fastening structure mounted on the lamination 1 and a lamination diagonal structure located between the lamination 1 and the cooling header 12. The cooling header 12 support structure includes an upper cooling header support 9, a middle cooling header support 10, and a lower cooling header support 11.

[0027] like Figure 2 The figure shows a top view of the sheet-dispersed fastening structure, which is fixedly mounted on the upper and lower sides of several groups of sheet-dispersed 1. The sheet-dispersed fastening structure includes a fixing plate A2 and a fixing plate B3. The fixing plates A2 and B3 are preferably equilateral angle steels rather than flat steels. Equilateral angle steels have better mechanical strength than flat steels. A pair of fixing plates A2 are welded and fixed together at their middle positions. The pair of fixing plates A2 are cross-crossed at 90 degrees. Mounting holes are respectively provided at both ends of the pair of fixing plates A2. Mounting bases with internal threads are welded and mounted on the corresponding mounting holes of the two adjacent groups of sheet-dispersed 1. The mounting bolts are screwed into the mounting bases through the mounting holes of the fixing plates A2, and the pair of fixing plates A2 are fixedly mounted on the two adjacent groups of sheet-dispersed 1. In this way, a tight and fixed connection between each two adjacent groups of sheet-dispersed 1 is achieved. Fixed plates B3 are welded and fixed to the edges of several groups of loose pieces 1 on both sides of the fixed plate A2. The fixed plates B3 are equilateral angle steels with long strip structures. The loose piece fastening structure composed of the fixed plates B3 and the fixed plates A2 fully ensures the tight and fixed connection between the several groups of loose pieces 1.

[0028] like Figure 3 As shown, several groups of sheet 1 are fully fixed on the cooling link 12 through the sheet oblique structure, reducing the stress on the upper pipe joint of the sheet 1. The sheet oblique structure includes six parts, namely, a hanging plate 4, a clamping ring 5, a pull rod 6, a fixing plate C7, a fixing block 8 and a fastener. A hanging plate 4 with a certain tilt angle is welded to the upper end of the cooling link 12. A connecting hole 1 is provided on the hanging plate 4, and a connecting hole 2 is provided on the upper end of the pull rod 6. The hanging plate 4 and the pull rod 6 are fixedly connected through the clamping ring 5 passing through the connecting hole 1 and the connecting hole 2. The clamping ring 5 is provided to facilitate the adjustment of the length of the sheet oblique structure. The structure of the clamping ring 5 is a prior art, wherein Figure 4 A typical structure is shown. Fixing plate C7 is preferably made of equilateral angle steel, and tie rod 6 is preferably made of seamless steel pipe. The horizontal opening of fixing plate C7 is fixed to the lower side of a group of scattered pieces 1 located away from the cooling pipe 12 via a full-thread screw 1 and a fixing nut. The lower end of tie rod 6 is welded to a fixing plate D with an internally threaded hole. Tie rod 6 and fixing plate D pass through fixing plate C7. The upper end of full-thread screw 2 is screwed into the internally threaded hole of fixing plate D. The lower end of full-thread screw 2 is tightened with a fastening nut. A fixing block 8 is added before the fastening nut to increase the contact area.

[0029] like Figure 5As shown, the cooling link upper support 9 includes an upper fixing plate, an upper support base and an upper support rod. The upper fixing plate is fixedly installed on the upper part of the cooling link 12 by welding, and the upper support base is fixedly installed on the upper part of the oil tank body by welding. Upper connecting holes are respectively opened on the upper fixing plate and the upper support base, and holes are respectively opened at both ends of the upper support rod. The upper support rod is fixedly connected to the upper fixing plate and the upper support base by bolts.

[0030] like Figure 6 As shown, the cooling link middle support 10 includes a middle support rod and a middle support base. The middle support base is fixedly installed on the side wall of the oil tank body by welding. The two ends of the middle support rod are respectively fixedly connected to the middle of the cooling link 12 and the middle support base by welding.

[0031] like Figure 7 As shown, the cooling link lower support 11 includes a lower support bracket and a lower support base, the lower support base is fixedly installed on the side wall of the oil tank body by welding, the lower support bracket is a rectangular structure with different thicknesses at both ends, the end with the larger thickness of the lower support bracket is fixedly connected to the lower support base by welding, a lower support block 1 is arranged between the lower support bracket and the cooling link 12, and a pair of cooling link 12 is reliably supported by the lower support bracket and the lower support block, a lower support block 2 is arranged between the lower support bracket and the sheet disperser 1, and a pair of sheet disperser 1 is reliably supported by the lower support bracket and the lower support block 2, the lower support block 1 and the lower support block 2 are fixedly installed on the upper surface of the lower support bracket by bolt connection, and the structure of the lower support block 1 and the lower support block 2 is the existing technology.

[0032] In the embodiment of the present invention, the stress on the sheet-dispersed pipe joints and the cooling-connected pipe joints due to the gravity of the sheet-dispersed pipe 1 and the cooling-connected pipe 12 is fully reduced through the cooling-connected pipe upper support 9, the cooling-connected pipe middle support 10 and the cooling-connected pipe lower support 11.

[0033] In the embodiment of the present invention, the supporting structure of the heat sink 1 and the supporting structure of the cooling link 12 fully reduce the stress on the pipe joints due to the cantilever beam structure of the heat sink 1 and the cooling link 12, improve their seismic performance, and thus improve the overall seismic performance of the transformer.

[0034] In the embodiments of the present invention, technical features not described in detail are all existing technologies or conventional technical means and will not be described in detail here.

[0035] Finally, it should be noted that the above embodiments are only specific implementation methods of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them, and the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that any person skilled in the art can modify or easily think of changes to the technical solutions described in the above embodiments within the technical scope disclosed by the present invention, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A transformer heat sink and cooling pipe support structure, characterized in that: The support structure of the sheet disperser (1) includes a sheet disperser fastening structure fixedly mounted on the sheet disperser (1) and a sheet disperser inclined structure located between the sheet disperser (1) and the cooling link pipe (12); the support structure of the cooling link pipe (12) includes a cooling link pipe upper support (9), a cooling link pipe middle support (10) and a cooling link pipe lower support (11); The sheet-dispersing fastening structure is fixedly mounted on the upper side and lower side of a plurality of groups of sheet-dispersing (1), and the sheet-dispersing fastening structure includes a fixing plate A (2) and a fixing plate B (3). The middle positions of a pair of fixing plates A (2) are welded and fixed together. The pair of fixing plates A (2) are cross-crossed at 90 degrees. Mounting holes are respectively provided at both ends of the pair of fixing plates A (2). Mounting bases with internal threads are welded and mounted at the positions of the corresponding mounting holes of the two adjacent groups of sheet-dispersing (1). The mounting bolts pass through the mounting holes of the fixing plates A (2) and are screwed into the mounting base. The fixed plate B (3) is welded and fixedly installed at the edge positions of the sheet-dispersed (1) on both sides of the fixed plate A (2); the sheet-dispersed inclined structure comprises: a hanging plate (4), a clamping ring (5), a pull rod (6) and a fixed plate C (7); the hanging plate (4) is welded at an inclined angle at the upper end of the cooling link pipe (12); the fixed plate C (7) is fixedly installed on the lower side of a group of sheet-dispersed (1) away from the cooling link pipe (12); the upper end of the pull rod (6) is fixedly connected to the hanging plate (4) through the clamping ring (5); the lower end of the pull rod (6) is fixedly connected to the fixed plate C (7); The cooling pipe upper support (9) comprises an upper fixing plate, an upper support base and an upper support rod, the upper fixing plate is fixedly mounted on the upper part of the cooling pipe (12) by welding, the upper support base is fixedly mounted on the upper part of the oil tank body by welding, upper connection holes are respectively provided on the upper fixing plate and the upper support base, holes are respectively provided at both ends of the upper support rod, and the upper support rod is respectively fixedly connected to the upper fixing plate and the upper support base by bolts; The cooling pipe middle support (10) comprises a middle support rod and a middle support base, the middle support base is fixedly mounted on the side wall of the oil tank body by welding, and the two ends of the middle support rod are respectively fixedly connected to the middle of the cooling pipe (12) and the middle support base by welding; The cooling pipe lower support (11) comprises a lower support bracket and a lower support base. The lower support base is fixedly mounted on the side wall of the oil tank body by welding. The lower support bracket is a rectangular parallelepiped structure with different thicknesses at both ends. The end with the larger thickness of the lower support bracket is fixedly connected to the lower support base by welding.

2. A transformer heat sink and cooling pipe support structure according to claim 1, characterized in that: A connection hole 1 is provided on the hanging plate (4), and a connection hole 2 is provided on the upper end of the pull rod (6). The hanging plate (4) and the pull rod (6) are fixedly connected by a clamping ring (5) passing through the connection hole 1 and the connection hole 2. The fixing plate C (7) is made of equilateral angle steel. The horizontal opening of the fixing plate C (7) is fixedly installed to the lower side surface of a group of scattered pieces (1) of the cooling pipe (12) away from the cooling pipe (12) through a full-thread screw 1 and a fixing nut. The lower end of the pull rod (6) is welded with a fixing plate D with an internal threaded hole. The pull rod (6) and the fixing plate D pass through the fixing plate C (7). The upper end of the full-thread screw 2 is screwed into the internal threaded hole of the fixing plate D. The lower end of the full-thread screw 2 is fastened by a fastening nut. A fixing block (8) is set before the fastening nut.

3. A transformer heat sink and cooling pipe support structure according to claim 2, characterized in that: The pull rod (6) is made of seamless steel pipe.

4. The transformer heat sink and cooling pipe support structure according to claim 1, characterized in that: The fixing plate A (2) is an equilateral angle steel, and the fixing plate B (3) is a long strip of equilateral angle steel.

5. The transformer heat sink and cooling pipe support structure according to claim 1, characterized in that: A lower support block 1 is provided between the lower support bracket and the cooling connecting pipe (12), and a lower support block 2 is provided between the lower support bracket and the sheet disperser (1). The lower support block 1 and the lower support block 2 are fixedly mounted on the upper surface of the lower support bracket by means of bolt connection.

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