High power rotary rectifier components

Abstract

The utility model discloses a high-power rotating rectifier component, including a heat sink made of metal, the top of the heat sink fits two rectifier diodes, the lower end face of the rectifier diode is a positive electrode or a negative electrode, the upper end face of each rectifier diode fits a heat sink block, the heat sink block is a hollow round block, the outer portion of the heat sink block radially penetrates a plurality of heat dissipation holes connected to the inner portion thereof, the top surface of each heat sink block is vertically connected to a heat dissipation duct, the end of each heat dissipation duct is rotatably connected to an L-shaped tube, the outer portions of the two heat dissipation ducts are movably sleeved with a pressure plate, and the pressure plate is fixed to the top surface of the heat sink by bolts. The utility model realizes the function of heat dissipation of the rectifier diodes, and at the same time, by rotating the L-shaped tube, the L-shaped tube can adjust the direction of the L-shaped tube according to the external wind direction, so that the cold wind can smoothly enter the heat dissipation duct.

Description

Technical Field

[0001] The utility model relates to the technical field of rectifier components, in particular to a high-power rotating rectifier component. Background Art

[0002] In the past 10 years, due to the low efficiency and high pollutant emissions of small and medium-power generating units, relevant national departments have encouraged the construction of large (i.e., units above 1000MW) and limited the construction of small (units below 300MW) new power plants. However, the rotating rectifier diode components used in the exciters of existing synchronous generators above 1000MW are large in size, heavy in weight, have many fixing points, and have poor heat dissipation, resulting in a short service life, high failure rate, and low reliability. Utility Model Content

[0003] The utility model aims to solve the shortcomings in the prior art and proposes a high-power rotating rectifier component.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high-power rotating rectifier component, including a heat sink made of metal, the top of the heat sink is fitted with two rectifier diodes, the lower end face of the rectifier diode is a positive pole or a negative pole, the upper end face of each of the rectifier diodes is fitted with a heat dissipation block, the heat dissipation block is a hollow round block, the outside of the heat dissipation block radially penetrates a plurality of heat dissipation holes connected to the inside thereof, the top surface of each heat dissipation block is vertically connected to a heat dissipation duct, the end of each heat dissipation duct is rotatably connected to an L-shaped tube, the outsides of the two heat dissipation ducts are movably sleeved with a pressure plate, and the pressure plate is fixed to the top surface of the heat sink by bolts.

[0005] As a further description of the above technical solution: the bottom surfaces at both ends of the pressure plate are respectively abutted against a lower pressure sleeve, the lower pressure sleeve is installed on the top surface of the heat sink, the top surface of the pressure plate is abutted against an upper pressure sleeve, and the top surfaces at both ends of the heat sink each vertically penetrate a through hole that is concentric and has the same diameter as the upper pressure sleeve, the upper pressure sleeve, the lower pressure sleeve and the through hole are jointly penetrated by an insulating sleeve, the insulating sleeve is movably sleeved on the outside of the bolt, a threaded groove is provided on the top surface of the heat sink, the end of the bolt extends into the threaded groove and is threadedly connected to it.

[0006] As a further description of the above technical solution: the top surface of the rectifier diode is fixedly connected to an insulating support plate, and a plurality of equidistant annular third blind holes are axially opened on the top surface of the support plate, and a third positioning pin is axially inserted in each of the third blind holes, and the third positioning pin is fixed to the bottom surface of the heat dissipation pressing block, and the top surface of the pressing plate vertically passes through two sleeve holes adapted to the heat dissipation air ducts, and the two heat dissipation air ducts are respectively connected in the two sleeve holes.

[0007] As a further description of the above technical solution: a countersunk hole connected to the interior of the heat dissipation block is axially opened on the top surface, an internal thread is opened on the inner wall of the large diameter end of the countersunk hole, an external thread matching the internal thread is opened on the outside of the end of the heat dissipation air duct, and the heat dissipation air duct is threadedly connected to the countersunk hole through the external thread.

[0008] As a further description of the above technical solution: an annular dovetail groove is provided at the top of the heat dissipation air duct, a dovetail ring is rotatably connected in the annular dovetail groove, and the dovetail ring is concentrically fixed to the bottom surface of the L-shaped tube.

[0009] As a further description of the above technical solution: a plurality of disc springs are vertically stacked on the top surface of the heat dissipation block, and the plurality of disc springs are sleeved on the outside of the heat dissipation duct, and the uppermost disc spring abuts against the lower edge of the pressure plate, and a plurality of second locating pins equidistantly distributed in an annular manner are axially fixed at the upper and lower ends of the lower pressure sleeve, a plurality of second blind holes matching the second locating pins are provided on the top surface of the heat dissipation seat, and a plurality of first blind holes equidistantly distributed in annular manner are vertically provided at the upper and lower ends of the pressure plate, the second locating pins on the top surface of the lower pressure sleeve are axially inserted into the first blind holes at the lower end, and a plurality of first locating pins are vertically fixed on the bottom surface of the upper pressure sleeve, and the first locating pins are matched with the first blind holes on the upper end of the pressure plate.

[0010] The utility model has the following beneficial effects:

[0011] 1. Compared with the prior art, the high-power rotary rectifier assembly achieves heat dissipation for the rectifier diode by setting the rectifier diode on a heat sink made of a metal material, setting a heat dissipation block in the form of a hollow circular block on the top surface of the rectifier diode, penetrating a plurality of heat dissipation holes in communication with the inside of the heat dissipation block on the outside, connecting a heat dissipation duct on the top surface of the heat dissipation block, and rotatingly connecting an L-shaped tube at the end of the heat dissipation duct, thereby achieving heat dissipation for the rectifier diode. At the same time, by rotating the L-shaped tube, the L-shaped tube can be adjusted in direction according to the external wind direction, so that cold air can smoothly enter the heat dissipation duct;

[0012] 2. Compared with the prior art, the high-power rotary rectifier assembly realizes the positioning installation of the heat dissipation pressing block by installing the heat dissipation pressing block on the rectifier diode through the support plate, the third blind hole and the third positioning pin, thereby avoiding the displacement of the connection position between the heat dissipation pressing block and the rectifier diode, and the heat dissipation pressing block and the heat dissipation air duct are connected by threads, and the two are set into a split structure, so that the heat dissipation pressing block and the heat dissipation air duct can be easily disassembled and assembled;

[0013] 3. Compared with the prior art, the high-power rotary rectifier assembly, by installing the pressure plate on the top surface of the heat sink using multiple disc springs and multiple blind holes and locating pins, ensures the firmness of the connection between the pressure plate and the heat sink while facilitating the disassembly of the pressure plate and the heat sink. At the same time, multiple blind holes and locating pins are arranged on both sides of the upper pressure sleeve, the lower pressure sleeve and the pressure plate to limit the rotation direction of the three when installed on the heat sink, thereby preventing the pressure sleeve from rotating when the rotating bolt is fixed, thereby affecting the firmness of the connection between the pressure sleeve and the heat sink. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a half-section diagram of the overall structure of the high-power rotary rectifier assembly proposed by the utility model;

[0015] Figure 2 The utility model provides a high-power rotary rectifier component Figure 1 A magnified view of the structure at center A;

[0016] Figure 3 The utility model provides a high-power rotary rectifier component Figure 1 A magnified view of the structure at B in the middle;

[0017] Figure 4 The utility model provides a high-power rotary rectifier component Figure 1 A magnified view of the structure at C in the middle;

[0018] Figure 5 The utility model provides a high-power rotary rectifier component Figure 1 Enlarged view of the structure at D in the middle.

[0019] Legend:

[0020] 1. Heat sink; 2. Rectifier diode; 3. Lower pressure sleeve; 4. Support plate; 5. Pressure plate; 6. Heat dissipation hole; 7. Upper pressure sleeve; 8. Bolt; 9. Disc spring; 10. L-shaped tube; 11. Heat dissipation duct; 12. Sleeve hole; 13. Insulation sleeve; 14. Thread groove; 15. Annular dovetail groove; 16. Dovetail ring; 17. Through hole; 18. First locating pin; 19. First blind hole; 20. Second locating pin; 21. Second blind hole; 22. Countersunk hole; 23. Internal thread; 24. Third blind hole; 25. Third locating pin; 100. Heat dissipation block. DETAILED DESCRIPTION

[0021] 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.

[0022] Reference Figures 1 to 5 The utility model provides a high-power rotating rectifier component: it includes a heat sink 1 made of metal, two rectifier diodes 2 are attached to the top of the heat sink 1, the lower end surface of the rectifier diode 2 is a positive electrode or a negative electrode, and the upper end surface of each rectifier diode 2 is attached to a heat dissipation block 100, the heat dissipation block 100 is a hollow round block, and the outer portion of the heat dissipation block 100 radially penetrates a plurality of heat dissipation holes 6 connected to the inner portion thereof, and the top surface of each heat dissipation block 100 is vertically connected to a heat dissipation duct 11, and the end of each heat dissipation duct 11 is rotatably connected to an L-shaped tube 10, and an annular dovetail groove 15 is provided at the top of the heat dissipation duct 11, and a dovetail ring 16 is rotatably connected in the annular dovetail groove 15, and the dovetail ring 16 is concentrically fixed to the bottom surface of the L-shaped tube 10, and the outer portions of the two heat dissipation ducts 11 are movably sleeved with a pressing plate 5, and the pressing plate 5 is fixed to the top surface of the heat sink 1 by bolts 8;

[0023] By setting the rectifier diode 2 on the heat sink 1 made of metal, setting the top surface of the rectifier diode 2 as a hollow circular heat sink 100, penetrating a plurality of heat dissipation holes 6 connected to the inside of the heat sink 100 on the outside, connecting the heat dissipation duct 11 on the top surface of the heat sink 100, and rotating the L-shaped tube 10 at the end of the heat dissipation duct 11, the heat dissipation of the rectifier diode 2 is achieved. At the same time, by rotating the L-shaped tube 10, the L-shaped tube 10 can adjust the direction of the L-shaped tube 10 according to the external wind direction, so that the cold wind can smoothly enter the heat dissipation duct 11, and the heat of the rectifier diode 2 will be transferred to the heat sink 100, and the external air will enter the heat dissipation duct 11 through the L-shaped tube 10. The air entering the heat dissipation duct 11 enters the heat sink 100 through the countersunk hole 22, and then the air will carry the heat on the heat sink 100 and be discharged through the heat dissipation hole 6. At the same time, the heat sink 1 synchronously dissipates the heat of the rectifier diode 2, and dissipates and cools the rectifier diode 2.

[0024] Reference Figure 1 and Figure 5The top surface of the rectifier diode 2 is fixedly connected to an insulating support plate 4, and a plurality of third blind holes 24 equidistantly distributed in an annular manner are axially provided on the top surface of the support plate 4, and a third positioning pin 25 is axially inserted in each third blind hole 24, and the third positioning pin 25 is fixed to the bottom surface of the heat dissipation pressing block 100, and a countersunk hole 22 communicating with the interior thereof is axially provided on the top surface of the heat dissipation pressing block 100, and an internal thread 23 is provided on the inner wall of the large-diameter end of the countersunk hole 22, and an external thread matching the internal thread 23 is provided on the outer end of the heat dissipation air duct 11, and the heat dissipation air duct 11 is threadedly connected to the countersunk hole 22 through the external thread, and the top surface of the pressing plate 5 vertically penetrates two sleeve holes 12 matching the heat dissipation air duct 11, and the two heat dissipation air ducts 11 are respectively connected in the two sleeve holes 12;

[0025] By installing the heat dissipation pressing block 100 on the rectifier diode 2 through the support plate 4, the third blind hole 24 and the third positioning pin 25, the positioning installation of the heat dissipation pressing block 100 is achieved, and the connection position of the heat dissipation pressing block 100 and the rectifier diode 2 is prevented from being offset. The heat dissipation pressing block 100 and the heat dissipation air duct 11 are connected by threads, and the two are set into a split structure, so that the heat dissipation pressing block 100 and the heat dissipation air duct 11 can be easily disassembled and assembled;

[0026] Reference Figure 1 , Figure 3 and Figure 4 The bottom surfaces of both ends of the pressing plate 5 are respectively abutted against a lower pressing sleeve 3, and the lower pressing sleeve 3 is installed on the top surface of the heat sink 1. The top surface of the pressing plate 5 is abutted against an upper pressing sleeve 7. The top surfaces of both ends of the heat sink 1 are vertically penetrated by a through hole 17 which is concentric and has the same diameter as the upper pressing sleeve 7. The upper pressing sleeve 7, the lower pressing sleeve 3 and the through hole 17 are jointly penetrated by an insulating sleeve 13. The insulating sleeve 13 is movably sleeved on the outside of the bolt 8. The top surface of the heat sink 1 is provided with a thread groove 14, and the end of the bolt 8 extends into the thread groove 14 and is threadedly connected thereto; a plurality of disc springs 9 are vertically stacked on the top surface of the heat sink pressing block 100, and the plurality of disc springs 9 are sleeved on The outside of the heat dissipation duct 11, and the disc spring 9 at the uppermost end abuts against the lower edge of the pressure plate 5, the upper and lower ends of the lower pressure sleeve 3 are axially fixed with a plurality of second positioning pins 20 distributed in an annular manner with equal distances, the top surface of the heat dissipation seat 1 is provided with a plurality of second blind holes 21 adapted to the second positioning pins 20, the upper and lower ends of the pressure plate 5 are vertically provided with a plurality of first blind holes 19 distributed in an annular manner with equal distances, the second positioning pins 20 on the top surface of the lower pressure sleeve 3 are axially inserted into the first blind holes 19 at the lower end, and the bottom surface of the upper pressure sleeve 7 is vertically fixed with a plurality of first positioning pins 18, and the first positioning pins 18 are adapted to the first blind holes 19 at the upper end of the pressure plate 5;

[0027] By installing the pressure plate 5 on the top surface of the heat sink 1 using multiple disc springs 9 and multiple blind holes and locating pins, it is possible to ensure the firmness of the connection between the pressure plate 5 and the heat sink 1 while facilitating the disassembly of the pressure plate 5 and the heat sink 1. At the same time, multiple blind holes and locating pins are set on both sides of the upper pressure sleeve 7, the lower pressure sleeve 3 and the pressure plate 5 to limit the rotation direction of the three when installed on the heat sink 1, thereby preventing the pressure sleeve from rotating when the rotating bolt 8 is fixed, thereby affecting the firmness of the connection between the pressure sleeve and the heat sink 1.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-power rotary rectifier assembly, comprising a heat sink (1) made of metal, characterized in that: Two rectifier diodes (2) are attached to the top of the heat sink (1), the lower end surface of the rectifier diode (2) is a positive electrode or a negative electrode, and the upper end surface of each rectifier diode (2) is attached to a heat sink block (100), the heat sink block (100) is a hollow round block, the outside of the heat sink block (100) is radially penetrated by a plurality of heat dissipation holes (6) connected to the inside thereof, the top surface of each heat sink block (100) is vertically connected to a heat dissipation duct (11), the end of each heat dissipation duct (11) is rotatably connected to an L-shaped tube (10), the outside of the two heat dissipation ducts (11) are movably sleeved with a pressure plate (5), and the pressure plate (5) is fixed to the top surface of the heat sink (1) by bolts (8).

2. The high-power rotating rectifier assembly according to claim 1, characterized in that: The bottom surfaces at both ends of the pressure plate (5) are respectively abutted against a lower pressure sleeve (3), and the lower pressure sleeve (3) is installed on the top surface of the heat sink (1). The top surface of the pressure plate (5) is abutted against an upper pressure sleeve (7). The top surfaces at both ends of the heat sink (1) are respectively vertically penetrated by a through hole (17) which is concentric and has the same diameter as the upper pressure sleeve (7). The upper pressure sleeve (7), the lower pressure sleeve (3) and the through hole (17) are commonly penetrated by an insulating sleeve (13). The insulating sleeve (13) is movably sleeved on the outside of the bolt (8). The top surface of the heat sink (1) is provided with a thread groove (14), and the end of the bolt (8) extends into the thread groove (14) and is threadedly connected thereto.

3. The high-power rotating rectifier assembly according to claim 1 is characterized in that: The top surface of the rectifier diode (2) is fixedly connected to an insulating support plate (4); a plurality of third blind holes (24) equidistantly distributed in an annular manner are axially provided on the top surface of the support plate (4); a third positioning pin (25) is axially inserted into each of the third blind holes (24); the third positioning pin (25) is fixed to the bottom surface of the heat dissipation pressing block (100); the top surface of the pressing plate (5) vertically penetrates two sleeve holes (12) adapted to the heat dissipation air duct (11); and the two heat dissipation air ducts (11) are respectively connected to the two sleeve holes (12).

4. The high-power rotating rectifier assembly according to claim 1, characterized in that: A countersunk hole (22) communicating with the interior of the heat dissipation pressing block (100) is axially provided on the top surface thereof, an internal thread (23) is provided on the inner wall of the large diameter end of the countersunk hole (22), an external thread matching the internal thread (23) is provided on the outer end of the heat dissipation air duct (11), and the heat dissipation air duct (11) is threadedly connected to the countersunk hole (22) via the external thread.

5. The high-power rotating rectifier assembly according to claim 1 is characterized in that: An annular dovetail groove (15) is provided at the top of the heat dissipation air duct (11), a dovetail ring (16) is rotatably connected in the annular dovetail groove (15), and the dovetail ring (16) is concentrically fixed to the bottom surface of the L-shaped tube (10).

6. The high-power rotating rectifier assembly according to claim 2, characterized in that: A plurality of disc springs (9) are vertically stacked on the top surface of the heat dissipation block (100), and the plurality of disc springs (9) are sleeved on the outside of the heat dissipation duct (11), and the uppermost disc spring (9) abuts against the lower edge of the pressure plate (5); a plurality of second positioning pins (20) equidistantly distributed in an annular manner are axially fixed at the upper and lower ends of the lower pressure sleeve (3); a plurality of second blind holes (21) adapted to the second positioning pins (20) are provided on the top surface of the heat dissipation seat (1); a plurality of first blind holes (19) equidistantly distributed in annular manner are vertically provided at the upper and lower ends of the pressure plate (5); the second positioning pins (20) on the top surface of the lower pressure sleeve (3) are axially inserted into the first blind holes (19) at the lower end; a plurality of first positioning pins (18) are vertically fixed on the bottom surface of the upper pressure sleeve (7), and the first positioning pins (18) are adapted to the first blind holes (19) at the upper end of the pressure plate (5).

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