An APF active power filter with high heat dissipation function

Abstract

The present invention discloses an APF active power filter with high heat dissipation function, which belongs to the technical field of APF active power filters, and includes a box body, a reciprocating jet assembly and a driving assembly installed on the top of the box body, and an air intake assembly installed on the side of the box body; the driving assembly drives the reciprocating jet assembly to rotate to realize reciprocating jet injection; the driving assembly simultaneously drives the air intake structure of the air intake assembly to intake air, and at the same time, the driving assembly drives the dust removal structure of the air intake assembly to remove dust. Through the above-mentioned method, the present invention can realize that the gas enters the box body after being filtered, and avoids dust from entering the chassis and affecting the normal use of the APF active power filter; at the same time, the dust removal structure scrapes off the dust accumulated at the filter hole, which can avoid dust clogging the filter hole and affecting the intake air flow rate; the present invention can realize reciprocating jet injection by driving the reciprocating jet assembly through the driving assembly, thereby realizing cooling and heat dissipation of the components in the chassis, and avoiding the APF active power filter malfunctioning due to excessive component temperature.

Description

Technical Field

[0001] The present invention relates to the technical field of APF active power filters, in particular to an APF active power filter with high heat dissipation function. Background Art

[0002] APF is a new type of power electronic device used to dynamically suppress harmonics and compensate for reactive power. It can compensate for harmonics that vary in magnitude and frequency, as well as reactive power. Traditional APFs suffer from issues such as high component heat generation, high power consumption, large size, and complex installation.

[0003] To address these issues, Chinese utility model patent CN201520463605.4 discloses an APF active power filter. However, the following issues remain: First, component heat generation is ineffective, allowing heat to accumulate within the chassis, potentially causing APF failure when component temperatures are too high. Second, the lack of dust filtering means dust easily accumulates in the air intake during operation, affecting the APF's proper operation.

[0004] Based on this, the present invention designs an APF active power filter with high heat dissipation function to solve the above problems. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides an APF active power filter with high heat dissipation function.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] An APF active power filter with high heat dissipation function includes a box, an intelligent converter, terminals, a filter reactor, a capacitor and a zero-sequence reactor. An outlet hood for exhausting air is fixedly installed on the side wall of the box; a reciprocating jet assembly and a drive assembly are installed on the top of the box, and an air intake assembly is also installed on the side of the box; the drive assembly drives the reciprocating jet assembly to rotate to realize reciprocating jet injection;

[0008] The air intake assembly includes an air intake structure, a filtering structure and an ash removal structure, wherein the filtering structure and the ash removal structure are both installed inside the air intake structure; the driving assembly simultaneously drives the air intake structure of the air intake assembly to intake air, and at the same time drives the ash removal structure of the air intake assembly to remove ash;

[0009] The reciprocating jet assembly includes a nozzle drive assembly and a plurality of nozzles. The nozzle drive assembly is connected to the drive assembly, and the nozzles are connected to the nozzle drive assembly. The drive assembly drives the nozzle drive assembly to move, and the nozzle drive assembly drives the nozzles to reciprocate.

[0010] Furthermore, the intelligent converter and terminals are installed on the mounting plate at the lower part of the box, the filter inductor is installed on the mounting plate in the middle part of the box, and the capacitor, zero-sequence inductor, contactor I, molded case circuit breaker, miniature circuit breaker, contactor II, resistor I, resistor II, transformer and contactor I are installed on the mounting plate at the upper part of the box.

[0011] Furthermore, the air intake structure includes an air intake cylinder, a base, an air outlet pipe, a mounting ring, a straight shaft, a cross support seat and fan blades; the upper end of the air intake cylinder is fixedly mounted on the box body through the mounting ring, and the lower end of the air intake cylinder is threadedly connected to the base; the upper end of the straight shaft is connected to the drive assembly, and the fan blades are fixedly mounted on the straight shaft, the cross support seat is fixedly mounted inside the air intake cylinder, the middle part of the straight shaft is rotatably connected to the cross support seat through a bearing, and the side wall of the air intake cylinder is connected to the air outlet pipe, and the air outlet pipe is connected to the reciprocating jet assembly.

[0012] Furthermore, the filtering structure includes a filter cartridge, which is installed inside the air inlet cartridge, the bottom of the filter cartridge is fixedly connected to the base, and the filter cartridge is located below the horizontal support seat; the lower end of the straight axis is located inside the filter cartridge.

[0013] Furthermore, the dust removal structure includes a dust collecting cover, a scraper, a reciprocating threaded groove and a guide rod; a reciprocating threaded groove is opened on the outer wall of the lower end of the straight shaft, the lower end of the straight shaft is threadedly connected to the scraper, and the scraper is also movably connected to the guide rod, the upper end of the guide rod is fixedly connected to the horizontal support seat, and the lower end of the base is threadedly connected to the dust collecting cover.

[0014] Furthermore, the inner diameter of the filter cartridge is equal to the diameter of the leakage hole opened in the middle of the base, the outer wall of the scraper is in contact with the inner wall of the filter cartridge, and the scraper adopts a hollow shape.

[0015] Furthermore, the drive assembly includes a mounting frame, a drive motor, a first pulley, a belt and a second pulley, and the drive motor is electrically connected to the transformer through an electric wire; the mounting frame is fixedly installed on the top of the box, the drive motor is fixedly connected to the mounting frame, the output end of the drive motor is fixedly connected to the second pulley, the second pulley is connected to the first pulley through a belt, and the first pulley is fixedly connected to the upper end of the straight shaft.

[0016] Furthermore, the nozzle drive assembly includes a gear ring, a cross tube, a gear plate, a limit slider, a guide rail, a straight rod, a square frame, a push rod and a rotating plate; the bottom of the output end of the driving motor is also fixedly connected to the rotating plate, the lower end of the rotating plate is fixedly connected to the push rod, the lower end of the push rod is movably connected to the inside of the square frame, one end of the square frame is fixedly connected to a side wall of the gear plate, and the other side of the gear plate is provided with several groups of tooth grooves that mesh with several gear rings, the bottom of the gear plate is fixedly connected to several limit sliders, the limit slider is slidably connected to the guide rail, and the guide rail is fixedly installed on the top of the box body; the lower end of the gear ring is fixedly connected to the straight rod, the straight rod is rotatably connected to the box body through a bearing, the lower end of the straight rod is fixedly connected to the nozzle, the bottom of the nozzle is connected to the cross tube, and the air outlet pipe is connected to the cross tube.

[0017] Beneficial effects

[0018] The present invention can realize that the gas enters the outlet pipe after being filtered by the filter cartridge, thereby preventing dust from entering the chassis and affecting the normal use of the APF active power filter;

[0019] The present invention drives the scraper to move up and down reciprocatingly through a straight shaft, so that the scraper moves up and down along the guide rod, scraping off the dust accumulated at the filter holes on the inner wall of the filter cartridge, and the dust falls into the dust collecting cover below. When cleaning is needed, the dust collecting cover can be removed, which can further achieve dust removal and cleaning of the filter holes, preventing dust from clogging the filter cartridge and affecting the air intake velocity, and further preventing dust from entering the chassis and affecting the normal use of the APF active power filter;

[0020] The present invention delivers filtered gas to the horizontal pipe through the outlet pipe, and then delivers it to each nozzle through the horizontal pipe, and ejects the gas outward through the air vents provided on the nozzle. At the same time, the driving motor drives the rotating plate to rotate, and the rotating plate drives the gear plate to move back and forth along the guide rail through the square frame. The gear plate drives each gear ring to rotate back and forth, and each gear ring drives each nozzle to rotate back and forth through the straight rod to realize reciprocating air injection, thereby realizing cooling and heat dissipation of components in the chassis. The heat can be dissipated through the air outlet cover. The present invention has a good heat dissipation effect, and can avoid the APF active power filter malfunction caused by excessive component temperature.

[0021] This application sets up a drive component that can simultaneously realize air intake, filtration, filter hole cleaning, and reciprocating air jet, which is more energy-efficient and has stable operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0023] Figure 1 The present invention is an APF active power filter with high heat dissipation function. Figure 1 ;

[0024] Figure 2 This is a front view of an APF active power filter structure with high heat dissipation function according to the present invention;

[0025] Figure 3 It is a left side view of the structure of the present invention;

[0026] Figure 4 The present invention is an APF active power filter with high heat dissipation function. Figure 2 ;

[0027] Figure 5 The present invention is an APF active power filter with high heat dissipation function. Figure 3 ;

[0028] Figure 6 To follow Figure 2 AA direction cross-sectional view;

[0029] Figure 7 To follow Figure 3 BB direction cross-sectional view;

[0030] Figure 8 for Figure 6 Enlarged view of point C in the middle.

[0031] The numbers in the figure represent:

[0032] 1. Housing 2. Intelligent Converter 3. Terminals 4. Air Exhaust Hood 5. Filter Reactor 6. Capacitor 7. Zero-Sequence Reactor 8. Reciprocating Jet Assembly 81. Ring Gear 82. Nozzle 83. Cross Pipe 84. Tooth Plate 85. Limit Slider 86. Guide Rail 87. Straight Rod 88. Square Frame 89. Push Rod 810. Rotating Plate 9. Drive Assembly 91. Mounting Bracket 92. Drive Motor 93. First Pulley 94. Belt 95. Second Pulley 10. Inlet Assembly 101. Inlet Cylinder 102. Ash Collector Hood 103. Base 104. Air Exhaust Pipe 105. Mounting Ring 106. Straight Shaft 107. Filter Cartridge 108. Scraper 109. Reciprocating Thread Groove 1010. Guide Rod 1011. Cross Support 1012. Fan Blade 11. Molded Case Circuit Breaker 12. Miniature Circuit Breaker 13. Contactor II 14. Resistor I 15. Resistor II 16. Transformer 17. Contactor I. DETAILED DESCRIPTION

[0033] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0034] The present invention will be further described below with reference to the embodiments.

[0035] Example 1

[0036] Please refer to the instruction manual Figure 1-8 , an APF active power filter with high heat dissipation function, including a box 1, an intelligent converter 2, a terminal 3, a filter reactor 5, a capacitor 6 and a zero-sequence reactor 7. The intelligent converter 2 and the terminal 3 are installed on the mounting plate at the lower part of the box 1, the filter reactor 5 is installed on the mounting plate in the middle part of the box 1, and the capacitor 6, the zero-sequence reactor 7, the contactor I17, the molded case circuit breaker 11, the miniature circuit breaker 12, the contactor II13, the resistor I14, the resistor II15, the transformer 16 and the contactor I17 are installed on the mounting plate at the upper part of the box 1;

[0037] The transformer 16 is electrically connected to the contactor I17 on its right side. The intelligent converter 2 is connected to the filter reactor 5 through the terminal 3. The filter reactor 5 is connected to the contactor I17 through the capacitor 6. The capacitor 6 is connected to the zero-sequence reactor 7. The zero-sequence reactor 7 is connected to the molded case circuit breaker 11 through the resistor I14. The molded case circuit breaker 11 is connected to the miniature circuit breaker 12 through the contactor II13. The miniature circuit breaker 12 is connected to the transformer 16 through the resistor II15.

[0038] An air outlet hood 4 for air outlet is fixedly mounted on the side wall of the box body 1;

[0039] A reciprocating jet assembly 8 and a drive assembly 9 are installed on the top of the box 1, and an air intake assembly 10 is also installed on the side of the box 1; the drive assembly 9 drives the reciprocating jet assembly 8 to rotate to achieve reciprocating jet cooling;

[0040] The air intake assembly 10 includes an air intake structure, a filtering structure, and an ash removal structure, and the filtering structure and the ash removal structure are both installed inside the air intake structure; the driving assembly 9 simultaneously drives the air intake structure of the air intake assembly 10 to intake air, and at the same time, the driving assembly 9 drives the ash removal structure of the air intake assembly 10 to remove ash;

[0041] The air intake structure includes an air intake cylinder 101, a base 103, an air outlet pipe 104, a mounting ring 105, a straight shaft 106, a horizontal support seat 1011 and a fan blade 1012; the upper end of the air intake cylinder 101 is fixedly mounted on the box body 1 through the mounting ring 105, and the lower end of the air intake cylinder 101 is threadedly connected to the base 103; the upper end of the straight shaft 106 is connected to the drive assembly 9, and the fan blade 1012 is fixedly mounted on the straight shaft 106, and the horizontal support seat 1011 is fixedly mounted on the air intake cylinder 101 Inside, the horizontal support seat 1011 adopts a hollow structure, the middle part of the straight shaft 106 is rotatably connected to the horizontal support seat 1011 through a bearing, and the side wall of the air inlet cylinder 101 is connected to the outlet pipe 104, and the outlet pipe 104 is connected to the reciprocating jet assembly 8; the straight shaft 106 is driven to rotate by the driving assembly 9, and the straight shaft 106 drives the fan blades 1012 to rotate, thereby realizing air intake, and the gas passes through the horizontal support seat 1011 and enters the reciprocating jet assembly 8 through the outlet pipe 104;

[0042] The filtering structure includes a filter cartridge 107, which is installed inside the air inlet cartridge 101. The bottom of the filter cartridge 107 is fixedly connected to the base 103, and the filter cartridge 107 is located below the cross support seat 1011. The lower end of the straight shaft 106 is located inside the filter cartridge 107. After entering through the fan blades 1012 above, the gas is filtered by the filter cartridge 107 and then enters the outlet pipe 104, preventing dust from entering the chassis and affecting the normal use of the APF active power filter.

[0043] The ash removal structure includes an ash collecting cover 102, a scraper 108, a reciprocating thread groove 109 and a guide rod 1010; a reciprocating thread groove 109 is provided on the outer wall of the lower end of the straight shaft 106, and the scraper 108 is threadedly connected to the lower end of the straight shaft 106, and the scraper 108 is also movably connected to the guide rod 1010, and the guide rod 1010 is vertically arranged, and the upper end of the guide rod 1010 is fixedly connected to the horizontal support seat 1011; the lower end of the base 103 is threadedly connected to the ash collecting cover 102, preferably, the inner diameter of the filter cartridge 107 is equal to the diameter of the leakage hole opened in the middle of the base 103; the outer wall of the scraper 108 is in contact with the inner wall of the filter cartridge 107; the scraper 108 adopts a hollow shape to facilitate dust falling;

[0044] The scraper 108 is driven by the straight shaft 106 to move back and forth, so that the scraper 108 moves up and down along the guide rod 1010, scraping off the dust accumulated at the filter holes on the inner wall of the filter cartridge 107, and the dust falls into the dust collecting cover 102 below. When cleaning is needed, the dust collecting cover 102 can be removed, which can further achieve dust removal and cleaning of the filter holes, preventing dust from clogging the filter cartridge 107 and affecting the air intake velocity, and further preventing dust from entering the chassis and affecting the normal use of the APF active power filter;

[0045] The drive assembly 9 includes a mounting frame 91, a drive motor 92, a first pulley 93, a belt 94 and a second pulley 95. The drive motor 92 is electrically connected to the transformer 16 through an electric wire; the mounting frame 91 is fixedly mounted on the top of the box body 1, the drive motor 92 is fixedly connected to the mounting frame 91, the output end of the drive motor 92 is fixedly connected to the second pulley 95, the second pulley 95 is transmission-connected to the first pulley 93 through the belt 94, and the first pulley 93 is fixedly connected to the upper end of the straight shaft 106 of the air intake structure; the drive motor 92 drives the second pulley 95 to rotate, the second pulley 95 drives the first pulley 93 to rotate through the belt 94, and the first pulley 93 drives the straight shaft 106 to rotate, thereby achieving air intake, dust removal, etc.

[0046] The reciprocating jet assembly 8 includes a nozzle drive assembly and a plurality of nozzles 82. The nozzle drive assembly is connected to the drive assembly 9, and the nozzles 82 are connected to the nozzle drive assembly. The drive assembly 9 drives the nozzle drive assembly to move, and the nozzle drive assembly drives the nozzles 82 to reciprocate.

[0047] The nozzle drive assembly includes a gear ring 81, a cross tube 83, a tooth plate 84, a limit slider 85, a guide rail 86, a straight rod 87, a square frame 88, a push rod 89 and a rotating plate 810; the bottom of the output end of the drive motor 92 is also fixedly connected to the rotating plate 810, the lower end of the rotating plate 810 is fixedly connected to the push rod 89, the lower end of the push rod 89 is movably connected to the inside of the square frame 88, one end of the square frame 88 is fixedly connected to one side wall of the tooth plate 84, and the other side of the tooth plate 84 is provided with Several groups of tooth grooves mesh with several gear rings 81. The bottom of the gear plate 84 is fixedly connected to several limit sliders 85. The limit sliders 85 are slidably connected to the guide rails 86. The guide rails 86 are fixedly installed on the top of the box body 1. The lower end of the gear ring 81 is fixedly connected to a straight rod 87. The straight rod 87 is rotatably connected to the box body 1 through a bearing. The lower end of the straight rod 87 is fixedly connected to the nozzle 82. The bottom of the nozzle 82 is rotatably connected to the cross pipe 83. The outlet pipe 104 is connected to the cross pipe 83.

[0048] The air outlet pipe 104 delivers the filtered gas to the cross pipe 83, and then delivers it to each nozzle 82 through the cross pipe 83, and ejects the gas outward through the air vents provided on the nozzle 82. At the same time, the driving motor 92 drives the rotating plate 810 to rotate. The rotating plate 810 pushes the square frame 88 to move back and forth during the rotation. Due to the limiting effect of the guide rail 86 and the limit slider 85, the square frame 88 drives the gear plate 84 to move back and forth along the guide rail 86, and the gear plate 84 drives each gear ring 81 to rotate back and forth. Each gear ring 81 drives each nozzle 82 to rotate back and forth through the straight rod 87 to realize reciprocating air jetting, thereby realizing cooling and heat dissipation of the components inside the chassis. The heat can be dissipated through the air outlet hood 4. The present application has a good heat dissipation effect, which can avoid the APF active power filter malfunctioning due to excessive component temperature.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An APF active power filter with high heat dissipation function, comprising a housing (1), an intelligent converter (2), terminals (3), a filter reactor (5), a capacitor (6) and a zero-sequence reactor (7), characterized in that: An air outlet hood (4) for air outlet is fixedly mounted on the side wall of the box body (1); a reciprocating jet assembly (8) and a drive assembly (9) are mounted on the top of the box body (1); an air intake assembly (10) is also mounted on the side of the box body (1); the drive assembly (9) drives the reciprocating jet assembly (8) to rotate to realize reciprocating jet injection; The air intake assembly (10) comprises an air intake structure, a filtering structure and an ash removal structure, wherein the filtering structure and the ash removal structure are both installed inside the air intake structure; the driving assembly (9) simultaneously drives the air intake structure of the air intake assembly (10) to intake air, and at the same time, the driving assembly (9) drives the ash removal structure of the air intake assembly (10) to remove ash; The reciprocating jet assembly (8) includes a nozzle drive assembly and a plurality of nozzles (82), the nozzle drive assembly is connected to the drive assembly (9), the nozzles (82) are connected to the nozzle drive assembly, the drive assembly (9) drives the nozzle drive assembly to move, and the nozzle drive assembly drives the nozzles (82) to reciprocate; An intelligent converter (2) and a terminal (3) are mounted on a mounting plate at the lower portion of the box (1), a filter reactor (5) is mounted on a mounting plate at the middle portion of the box (1), and a capacitor (6), a zero-sequence reactor (7), a contactor I (17), a molded case circuit breaker (11), a miniature circuit breaker (12), a contactor II (13), a resistor I (14), a resistor II (15), a transformer (16), and a contactor I (17) are mounted on a mounting plate at the upper portion of the box (1); The air intake structure comprises an air intake cylinder (101), a base (103), an air outlet pipe (104), a mounting ring (105), a straight shaft (106), a transverse support seat (1011) and a fan blade (1012); the upper end of the air intake cylinder (101) is fixedly mounted on the box body (1) via the mounting ring (105), and the lower end of the air intake cylinder (101) is threadedly connected to the base (103); the upper end of the straight shaft (106) is connected to the drive assembly (9), the fan blade (1012) is fixedly mounted on the straight shaft (106), the transverse support seat (1011) is fixedly mounted inside the air intake cylinder (101), the middle part of the straight shaft (106) is rotatably connected to the transverse support seat (1011) via a bearing, the air outlet pipe (104) is connected to the side wall of the air intake cylinder (101), and the air outlet pipe (104) is connected to the reciprocating jet assembly (8).

2. The APF active power filter with high heat dissipation function according to claim 1 is characterized in that: The filtering structure comprises a filter cartridge (107), the filter cartridge (107) being installed inside the air inlet cartridge (101), the bottom of the filter cartridge (107) being fixedly connected to the base (103), and the filter cartridge (107) being located below the transverse support seat (1011); and the lower end of the straight shaft (106) being located inside the filter cartridge (107).

3. The APF active power filter with high heat dissipation function according to claim 2 is characterized in that: The ash removal structure comprises an ash collecting cover (102), a scraper (108), a reciprocating thread groove (109) and a guide rod (1010); a reciprocating thread groove (109) is provided on the outer wall of the lower end of the straight shaft (106); the lower end of the straight shaft (106) is threadedly connected to the scraper (108), and the scraper (108) is also movably connected to the guide rod (1010); the upper end of the guide rod (1010) is fixedly connected to the horizontal support seat (1011), and the lower end of the base (103) is threadedly connected to the ash collecting cover (102).

4. The APF active power filter with high heat dissipation function according to claim 3 is characterized in that: The inner diameter of the filter cartridge (107) is equal to the diameter of the leakage hole opened in the middle of the base (103); the outer wall of the scraper (108) is in contact with the inner wall of the filter cartridge (107); and the scraper (108) is hollow.

5. The APF active power filter with high heat dissipation function according to claim 4 is characterized in that: The driving assembly (9) includes a mounting frame (91), a driving motor (92), a first pulley (93), a belt (94) and a second pulley (95); the mounting frame (91) is fixedly mounted on the top of the box (1), the driving motor (92) is fixedly connected to the mounting frame (91), the output end of the driving motor (92) is fixedly connected to the second pulley (95), the second pulley (95) is transmission-connected to the first pulley (93) via the belt (94), and the first pulley (93) is fixedly connected to the upper end of the straight shaft (106).

6. The APF active power filter with high heat dissipation function according to claim 5, characterized in that: The nozzle drive assembly includes a gear ring (81), a transverse tube (83), a tooth plate (84), a limit slider (85), a guide rail (86), a straight rod (87), a square frame (88), a push rod (89) and a rotating plate (810); the bottom of the output end of the drive motor (92) is also fixedly connected to the rotating plate (810), the lower end of the rotating plate (810) is fixedly connected to the push rod (89), the lower end of the push rod (89) is movably connected to the inside of the square frame (88), one end of the square frame (88) is fixedly connected to a side wall of the tooth plate (84), and the other side of the tooth plate (84) is provided with There are a plurality of groups of tooth grooves meshing with a plurality of gear rings (81), the bottom of the tooth plate (84) is fixedly connected to a plurality of limit sliders (85), the limit sliders (85) are slidably connected to the guide rails (86), and the guide rails (86) are fixedly installed on the top of the box body (1); the lower end of the gear ring (81) is fixedly connected to a straight rod (87), the straight rod (87) is rotatably connected to the box body (1) through a bearing, the lower end of the straight rod (87) is fixedly connected to the nozzle (82), the bottom of the nozzle (82) is connected to the transverse pipe (83), and the air outlet pipe (104) is connected to the transverse pipe (83).

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