Harmonic controller based on power electronic harmonic suppression technology

Abstract

The invention relates to a harmonic controller based on a power electronic harmonic suppression technology, and belongs to the technical field of harmonic controllers. Comprising a first mounting seat, a second mounting seat is slidably arranged on the first mounting seat, and a harmonic controller shell is inserted into the second mounting seat; the first mounting seat and the second mounting seat are connected through a locking mechanism; two damping mechanisms are arranged on the inner side of each of the first mounting seat and the second mounting seat, each damping mechanism comprises a damping cavity, an air bag and a moving cavity, a damping piston rod is slidably arranged in each damping cavity, a damping plate is fixedly arranged on each damping piston rod, and each damping cavity communicates with the corresponding air bag and the corresponding moving cavity through a connecting pipe; the damping plate in the first mounting seat is connected with the harmonic controller shell through a clamping mechanism, and the damping plate in the second mounting seat is fixedly connected with the harmonic controller shell; the problem that the connection of internal circuits of the harmonic controller and the normal operation of equipment are affected by long-term vibration at present is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of harmonic controllers, and in particular relates to a harmonic controller based on power electronic harmonic suppression technology. Background Art

[0002] Against the backdrop of the rapid development of modern industry and smart grids, a large number of nonlinear power electronic devices such as inverters and rectifiers are connected to the power grid. The harmonic currents and voltages generated by them seriously threaten the safe and stable operation of the power system. Harmonics not only cause overheating and increased losses in electrical equipment, but may also cause problems such as malfunction of relay protection devices and interference with communication systems, and even cause power grid collapse. Harmonic controllers are key equipment developed to solve this problem. Their core purpose is to monitor the harmonic parameters of the power grid in real time, and through active or passive compensation technology, suppress harmonic current injection, improve power quality, and ensure efficient and safe operation of the power system. Harmonic controllers are usually installed near the harmonic source, on the low-voltage side of the distribution system, such as the busbar side of the low-voltage distribution cabinet in a workshop or factory, to directly and centrally control harmonic-generating equipment such as inverters and arc furnaces.

[0003] After the existing harmonic controller is installed and put into use, the power devices inside the controller may vibrate due to periodic changes in electromagnetic force when working at high frequency. When the cooling fan runs at high speed, if the dynamic balance is poor or there is friction between the fan blades and the air duct, vibration will also be caused. Existing harmonic controllers are mostly fixed directly to the surface of a dedicated bracket inside the cabinet with screws. Long-term vibration may cause the connection of internal circuits to loosen, resulting in poor contact, affecting the normal operation of the equipment, accelerating the aging of components, and shortening the service life of the harmonic controller. Summary of the Invention

[0004] The present invention overcomes the deficiencies of the prior art and proposes a harmonic controller based on power electronic harmonic suppression technology; it solves the current problem that long-term vibration affects the connection of internal circuits of the harmonic controller and the normal operation of the equipment.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions.

[0006] A harmonic controller based on power electronic harmonic suppression technology includes a first mounting seat, a second mounting seat is slidably arranged on the first mounting seat, and a harmonic controller shell is inserted into the second mounting seat; the first mounting seat and the second mounting seat are connected by a locking mechanism; two groups of shock-absorbing mechanisms are arranged on the inner sides of the first mounting seat and the second mounting seat, and the shock-absorbing mechanism includes a shock-absorbing chamber, an airbag, and a moving chamber, a shock-absorbing piston rod is slidably arranged inside the shock-absorbing chamber, a shock-absorbing plate is fixedly arranged at one end of the outer side of the shock-absorbing piston rod, a pressing piston rod is slidably arranged inside the moving chamber, and a pressing block is fixedly arranged on the outer side of the pressing piston rod, the shock-absorbing chamber is connected to the airbag through a first connecting tube, and the shock-absorbing chamber is connected to the moving chamber through a second connecting tube; the shock-absorbing plate inside the first mounting seat is connected to the harmonic controller shell through a clamping mechanism, and the shock-absorbing plate inside the second mounting seat is fixedly connected to the harmonic controller shell.

[0007] Furthermore, the first mounting base includes a first rear side panel, a first left side panel, a first right side panel, and a top panel, the rear end of the top panel is fixedly connected to the upper end of the first rear side panel, the left and right ends of the top panel are respectively fixedly connected to the upper ends of the first left panel and the first right side panel, and the left and right ends of the first rear side panel are respectively fixedly connected to the rear ends of the first left panel and the first right side panel; the front and rear length of the top panel is greater than the front and rear length of the first left panel and the first right side panel, and the height of the first rear side panel is equal to the height of the first left panel and the first right side panel; the second mounting base includes a second rear side panel, a second left side panel, a second right side panel, and a bottom panel; the second left side panel and the second right side panel each include a front half and a rear half, and the front The first and second right panels are connected to each other with the left and right ends of the bottom panel, and the left and right ends of the bottom panel are fixedly connected to the lower ends of the second left panel and the second right panel, respectively, and the left and right ends of the second rear panel are fixedly connected to the rear ends of the rear half of the second left panel and the rear ends of the rear half of the second right panel, respectively; when the first mounting seat is connected to the second mounting seat, the first rear side panel coincides with the second rear side panel, the first left panel coincides with the second left panel, and the first right panel coincides with the second right panel, and the left and right ends of the top panel are in contact with the upper ends of the front half of the second left panel and the upper ends of the front half of the second right panel, respectively. At this time, the first mounting seat and the second mounting seat are combined into a square box structure with an open front end.

[0008] Furthermore, a group of locking mechanisms is provided between the front end of the first left plate of the first mounting seat and the rear end of the front half of the second left plate of the second mounting seat, and a group of locking mechanisms is also provided between the front end of the first right plate of the first mounting seat and the rear end of the front half of the second right plate of the second mounting seat; the locking mechanism includes a locking block and a locking rod; a semicircular groove is respectively provided at the front end of the first left plate and the front end of the first right plate of the first mounting seat, and a semicircular groove is respectively provided at the rear end of the front half of the second left plate and the rear end of the front half of the second right plate of the second mounting seat. A fan-shaped groove is respectively provided at one end of the inner side of each semicircular groove, and the semicircular grooves are connected to the fan-shaped grooves; a semicircular locking block is rotatably provided inside each semicircular groove, and a locking rod is fixedly provided in the middle of the outer arc surface of each locking block, and the locking rod is located on the inner side of the fan-shaped groove.

[0009] Furthermore, the locking mechanism also includes a rotating handle and a return spring; a return spring is fixedly provided on the inner wall of the lower end of the two fan-shaped grooves of the first mounting seat, and a return spring is fixedly provided on the inner wall of the upper end of the two fan-shaped grooves of the second mounting seat, and the end of the return spring is fixedly connected to the locking rod inside the fan-shaped groove; an arc-shaped toggle groove is provided on the outer wall of the two fan-shaped grooves of the first mounting seat, and a rotating handle is slidably provided inside each toggle groove, and the inner ends of the two rotating handles are fixedly connected to the ends of the two locking rods inside the first mounting seat away from the locking block.

[0010] Furthermore, the two shock-absorbing mechanisms inside the first mounting seat are arranged at the two corners on the upper side of the first rear side plate, and the two shock-absorbing mechanisms inside the second mounting seat are arranged at the two corners on the lower side of the second rear side plate; the shock-absorbing mechanism also includes a shock-absorbing spring; each group of shock-absorbing mechanisms includes two shock-absorbing chambers, and the two shock-absorbing chambers are interlocked; the front end of the shock-absorbing chamber remains open, and the rear end of the shock-absorbing chamber is fixedly connected to the first rear side plate or the second rear side plate; a shock-absorbing piston rod is slidably arranged inside each shock-absorbing chamber, and the same shock-absorbing plate is fixedly arranged at one end of the outer sides of the two shock-absorbing piston rods, and a shock-absorbing spring is arranged between the two shock-absorbing chambers, and the rear end of the shock-absorbing spring is fixedly connected to the first rear side plate or the second rear side plate, and the front end of the shock-absorbing plate is fixedly connected to the rear end surface of the shock-absorbing plate.

[0011] Furthermore, the two groups of airbags of the shock-absorbing mechanism inside the first mounting seat are respectively fixed on the inner walls of the first left plate and the first right plate, and the two groups of airbags of the shock-absorbing mechanism inside the second mounting seat are respectively fixed on the inner walls of the second left plate and the second right plate; the end of the first connecting tube away from the airbag is connected to the internal space of the shock-absorbing chamber at the rear end of the shock-absorbing piston rod.

[0012] Furthermore, the pressure block is an L-shaped structure, and the movable chambers of the two groups of shock-absorbing mechanisms inside the first mounting seat are fixedly arranged on the first rear side plate, and the pressure blocks of the two groups of shock-absorbing mechanisms inside the first mounting seat are respectively fixedly arranged at the two corners on the upper side of the first rear side plate; the movable chambers of the two groups of shock-absorbing mechanisms inside the second mounting seat are fixedly arranged on the second rear side plate, and the air bags of the two groups of shock-absorbing mechanisms inside the second mounting seat are respectively fixedly arranged at the two corners on the lower side of the second rear side plate; one end of the second connecting tube is connected to the internal space of the movable chamber at the rear end of the pressure piston rod, and the other end of the second connecting tube is connected to the internal space of the shock-absorbing chamber at the rear end of the shock-absorbing piston rod.

[0013] Furthermore, four connecting blocks arranged in a square array are fixedly provided on the rear end face of the harmonic controller housing. The two connecting blocks on the upper side are connected to the two shock-absorbing plates inside the first mounting seat through a clamping mechanism, and the two connecting blocks on the lower side are fixedly connected to the two shock-absorbing plates inside the second mounting seat.

[0014] Furthermore, the clamping mechanism includes a clamping block, an air cavity, a limiting piston rod, and a limiting spring; two left-right symmetrical sliding grooves are provided on the front end face of the shock-absorbing plate of the first mounting seat, a clamping block is slidably arranged inside each sliding groove, and a piston groove extending left and right is respectively provided on the end face of the two sliding grooves away from each other, a limiting piston rod is slidably arranged inside each piston groove, and a limiting spring is respectively sleeved on the outer side of the ends of the two limiting piston rods close to each other, and the end of the limiting spring away from the limiting piston rod is fixedly connected to the clamping block on the same side; an air cavity is provided inside the shock-absorbing plate of the first mounting seat, and the air cavity is connected to the ends of the two piston grooves away from each other.

[0015] Furthermore, two vertical first sliding grooves are provided inside the first rear side plate of the first mounting seat, and two vertical second sliding grooves are provided inside the second rear side plate of the second mounting seat, the first exposed groove is provided on the front side of the top end of the first sliding groove, and the second exposed groove is provided on the front side of the bottom end of the second sliding groove; a vertical fixing spring is fixedly provided on the top end of the first sliding groove and the bottom end of the second sliding groove; an L-shaped first fixing rod is slidably provided in each first sliding groove, the first fixing rod abuts against the fixing spring in the first sliding groove, and an L-shaped second fixing rod is slidably provided in each second sliding groove, the second fixing rod abuts against the fixing spring in the second sliding groove, and the first fixing rod and the second fixing rod both include a vertical section and a horizontal section; The upper end of the vertical section of a fixing rod is fixedly connected to the rear end of the horizontal section, the vertical section of the first fixing rod slides inside the first sliding groove, the lower end of the vertical section of the first fixing rod extends to the outside of the lower end of the first sliding groove, the horizontal section of the first fixing rod extends outward from the first exposed groove, and a first clamping groove is provided at the front end of the horizontal section of the first fixing rod, the first clamping groove is clamped with the upper end of the shock-absorbing plate inside the first mounting seat; the lower end of the vertical section of the second fixing rod is fixedly connected to the rear end of the horizontal section, the vertical section of the second fixing rod slides inside the second sliding groove, the upper end of the vertical section of the second fixing rod extends to the outside of the upper end of the second sliding groove, the horizontal section of the second fixing rod extends outward from the second exposed groove, and a second clamping groove is provided at the front end of the horizontal section of the second fixing rod, and the second clamping groove is clamped with the lower end of the shock-absorbing plate inside the second mounting seat.

[0016] The beneficial effects of the present invention compared to the prior art are: 1. The present invention provides a shock-absorbing mechanism that responds quickly when the harmonic controller generates vibration during operation, quickly offsets the impact force through elastic buffering, limits the displacement of the harmonic controller, prevents shaking, avoids loosening of internal circuits or damage to devices due to shaking, and ensures relative stability during vibration. The gas in the shock-absorbing chamber forms a resistance buffer structure to protect the shock-absorbing spring, slows down the aging of the shock-absorbing spring caused by long-term load, and improves the service life of the device; the shock-absorbing plate is squeezed by vibration to squeeze the shock-absorbing spring and the shock-absorbing piston rod, and the shock-absorbing piston rod compresses the gas, which passes through the first connecting pipe and the second connecting pipe, so that the pressing piston rod pushes the pressing block outward to fix the four corners of the harmonic controller housing. At the same time, the airbag expands rapidly and fits tightly against the side wall of the harmonic controller housing, further limiting the position of the harmonic controller housing from multiple directions, and improving the overall service life and operational reliability of the harmonic controller.

[0017] 2. The present invention provides a locking mechanism. When the harmonic controller is installed, the locking block can respond quickly, and the first mounting seat and the second mounting seat are fastened and locked at the moment the first mounting seat and the second mounting seat are in contact, thereby improving the installation efficiency, ensuring the stability of the harmonic controller during operation, and avoiding loosening problems caused by vibration. When the harmonic controller is disassembled, the first mounting seat and the second mounting seat are separated, and the fixing rod locks the shock-absorbing plate through the fixing groove, isolating the external force generated by the disassembly operation, avoiding the staff's disassembly action from causing damage to the shock-absorbing mechanism such as pulling and collision, reducing the risk of accidental damage to the shock-absorbing mechanism, extending the service life of the shock-absorbing mechanism, and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below with reference to the accompanying drawings: Figure 1 It is a schematic structural diagram of the present invention as a whole; Figure 2 This is a schematic diagram of the structure before the first mounting base is connected to the second mounting base Figure 1 ; Figure 3 This is a schematic diagram of the structure before the first mounting base is connected to the second mounting base Figure 2 ; Figure 4 It is a structural diagram of the harmonic controller housing; Figure 5 It is a structural diagram of the locking mechanism; Figure 6 yes Figure 5 A partial enlarged schematic diagram of point A in the middle; Figure 7 It is a structural diagram of the first mounting base and one set of shock absorbing mechanisms; Figure 8 is a schematic diagram of the connection between the first mounting base and the first fixing rod; Figure 9 is a partial connection diagram of the first fixing rod and the shock absorbing mechanism; Figure 10 It is a structural diagram of the clamping mechanism; Among them, 1 is the harmonic controller housing, 101 is the connecting block, 2 is the first mounting seat, 201 is the mounting hole, 202 is the locking block, 203 is the rotating handle, 204 is the return spring, 205 is the locking rod, 3 is the second mounting seat, 4 is the shock-absorbing plate, 401 is the shock-absorbing spring, 402 is the clamping block, 403 is the air cavity, 404 is the limiting piston rod, 405 is the limiting spring, 5 is the shock-absorbing cavity, 501 is the shock-absorbing piston rod, 6 is the air bag, 7 is the moving cavity, 701 is the pressing piston rod, 702 is the pressing block, 8 is the first fixing rod, 801 is the first clamping groove, 802 is the fixing spring, and 9 is the second fixing rod. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. The technical solutions of the present invention will be described in detail below with reference to the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

[0020] like Figure 1 As shown in —10, the present invention provides a harmonic controller based on power electronic harmonic suppression technology, including a first mounting seat 2, a second mounting seat 3 is slidably arranged on the first mounting seat 2, and a harmonic controller shell 1 is inserted into the second mounting seat 3; the first mounting seat 2 and the second mounting seat 3 are connected by a locking mechanism; two groups of shock-absorbing mechanisms are arranged on the inner sides of the first mounting seat 2 and the second mounting seat 3, and the shock-absorbing mechanism includes a shock-absorbing chamber 5, an airbag 6, and a movable chamber 7, a shock-absorbing piston rod 501 is slidably arranged inside the shock-absorbing chamber 5, a shock-absorbing plate 4 is fixedly arranged at one end of the outer side of the shock-absorbing piston rod 501, a pressing piston rod 701 is slidably arranged inside the movable chamber 7, and a pressing block 702 is fixedly arranged on the outer side of the pressing piston rod 701, the shock-absorbing chamber 5 is connected to the airbag 6 through a first connecting tube, and the shock-absorbing chamber 5 is connected to the movable chamber 7 through a second connecting tube; the shock-absorbing plate 4 inside the first mounting seat 2 is connected to the harmonic controller shell 1 through a clamping mechanism, and the shock-absorbing plate 4 inside the second mounting seat 3 is fixedly connected to the harmonic controller shell 1.

[0021] The first mounting base 2 includes a first rear side panel, a first left side panel, a first right side panel, and a top panel. The first left side panel is symmetrical with the first right side panel. The rear end of the top panel is fixedly connected to the upper end of the first rear side panel, and the left and right ends of the top panel are respectively fixedly connected to the upper ends of the first left side panel and the first right side panel. The left and right ends of the first rear side panel are respectively fixedly connected to the rear ends of the first left side panel and the first right side panel. The front-to-back length of the top panel is greater than the front-to-back length of the first left side panel and the first right side panel, and the height of the first rear side panel is equal to the height of the first left side panel and the first right side panel.

[0022] The second mounting base 3 includes a second rear side panel, a second left side panel, a second right side panel, and a bottom panel. The second left side panel is symmetrical with the second right side panel. Each of the second left side panel and the second right side panel includes a front section and a back section. The bottom ends of the front section and the back section overlap, and the height of the front section is greater than that of the back section. The left and right ends of the bottom panel are fixedly connected to the lower ends of the second left side panel and the second right side panel, respectively. The left and right ends of the second rear side panel are fixedly connected to the rear ends of the back sections of the second left side panel and the second right side panel, respectively.

[0023] When the first mounting seat 2 is connected to the second mounting seat 3, the first rear side plate of the first mounting seat 2 coincides with the second rear side plate of the second mounting seat 3, the first left side plate of the first mounting seat 2 coincides with the second left side plate of the second mounting seat 3, the first right side plate of the first mounting seat 2 coincides with the second right side plate of the second mounting seat 3, and the left and right ends of the top plate of the first mounting seat 2 respectively contact the upper end of the front half of the second left side plate and the upper end of the front half of the second right side plate of the second mounting seat 3. At this time, the first mounting seat 2 and the second mounting seat 3 are combined into a square box structure with an open front end.

[0024] Four mounting holes 201 arranged in a square array are provided on the first rear side plate of the first mounting seat 2. The first mounting seat 2 can be firmly fixed to the surface of the bracket by passing bolts through the four mounting holes 201 to form a solid basic support and avoid aggravated vibration due to unstable installation.

[0025] A locking mechanism is provided between the front end of the first left side panel of the first mounting seat 2 and the rear end of the front half of the second left side panel of the second mounting seat 3. A locking mechanism is also provided between the front end of the first right side panel of the first mounting seat 2 and the rear end of the front half of the second right side panel of the second mounting seat 3. The locking mechanism includes a locking block 202, a locking rod 205, a rotating handle 203, and a return spring 204.

[0026] A semicircular groove is provided at the front end of the first left side plate and the front end of the first right side plate of the first mounting seat 2, respectively. A semicircular groove is provided at the rear end of the front half of the second left side plate and the rear end of the front half of the second right side plate of the second mounting seat 3, respectively. A fan-shaped groove is provided at the inner end of each semicircular groove, and the semicircular grooves are connected to the fan-shaped grooves. A semicircular locking block 202 is rotatably mounted within each semicircular groove, and the outer arc surface of the locking block 202 is in sliding contact with the inner arc surface of the semicircular groove. A locking rod 205 is fixedly mounted in the middle of the outer arc surface of each locking block 202. The locking rod 205 is located inside the fan-shaped groove, and the length of the locking rod 205 is arranged along the radial direction of the locking block 202.

[0027] An arcuate first mounting groove is provided on the inner wall at one end of the lower side of the two fan-shaped grooves of the first mounting base 2. An arcuate return spring 204 is fixedly installed inside each first mounting groove. The return spring 204 extends outward from the first mounting groove and is fixedly connected to a locking rod 205 inside the fan-shaped groove. An arcuate toggle groove is provided on the outer wall of each fan-shaped groove of the first mounting base 2. A rotating handle 203 is slidably installed inside each toggle groove. The inner ends of the two rotating handles 203 are fixedly connected to the ends of the two locking rods 205 inside the first mounting base 2, away from the locking block 202. By toggling the two rotating handles 203, the two locking rods 205 can be controlled to rotate within the fan-shaped groove, and the two locking blocks 202 can be controlled to rotate within the semicircular groove.

[0028] An arc-shaped second mounting groove is respectively provided on the inner wall of one end of the upper side of the two fan-shaped grooves of the second mounting seat 3, and an arc-shaped return spring 204 is fixedly provided inside each second mounting groove. The return spring 204 extends to the outer end of the second mounting groove and is fixedly connected to the locking rod 205 inside the fan-shaped groove.

[0029] When the locking block 202 in the first mounting seat 2 is not subjected to external force, the upper end of the locking block 202 rotates outward from the semicircular groove due to the rebound force of the return spring 204. When the locking block 202 in the second mounting seat 3 is not subjected to external force, the lower end of the locking block 202 rotates outward from the semicircular groove due to the rebound force of the return spring 204.

[0030] When the second mounting seat 3 slides upward against the first mounting seat 2 for installation, the upper ends of the two locking blocks 202 on the first mounting seat 2 are squeezed by the second left plate and the second right plate of the second mounting seat 3 and rotated back into the semicircular groove, and the lower ends of the two locking blocks 202 on the second mounting seat 3 are squeezed by the first left plate and the first right plate of the first mounting seat 2 and rotated back into the semicircular groove. When the first mounting seat 2 and the second mounting seat 3 are assembled and connected, the locking block 202 inside the first mounting seat 2 and the locking block 202 inside the second mounting seat 3 are combined into a complete circular block structure. At this time, under the action of the rebound force of the reset spring 204, the upper end of the locking block 202 inside the first mounting seat 2 rotates to the inside of the semicircular groove of the second mounting seat 3, and the lower end of the locking block 202 inside the second mounting seat 3 rotates to the inside of the semicircular groove of the first mounting seat 2. The locking block 202 inside the first mounting seat 2 is engaged with the semicircular groove of the second mounting seat 3, and the locking block 202 inside the second mounting seat 3 is engaged with the semicircular groove of the first mounting seat 2. The two locking blocks 202 engage with each other, so that the first mounting seat 2 and the second mounting seat 3 are fixedly connected and cannot be automatically disengaged.

[0031] When it is necessary to disengage the first mounting seat 2 from the second mounting seat 3, the two rotating handles 203 are rotated to control the two locking rods 205 inside the first mounting seat 2 to rotate inside the fan-shaped groove, so that the return spring 204 inside the first mounting seat 2 is compressed, driving the two locking blocks 202 inside the first mounting seat 2 back to the two semicircular grooves of the first mounting seat 2, so that the two locking blocks 202 inside the second mounting seat 3 also return to the two semicircular grooves of the second mounting seat 3, and the first mounting seat 2 can be disengaged from the second mounting seat 3.

[0032] The two damping mechanisms inside the first mounting seat 2 are arranged at the two corners of the upper side of the first rear side plate, and the two damping mechanisms inside the second mounting seat 3 are arranged at the two corners of the lower side of the second rear side plate.

[0033] Each set of shock-absorbing mechanisms includes two L-shaped shock-absorbing chambers 5, which are interlocked with each other; the front end of the shock-absorbing chamber 5 remains open, and the rear end of the shock-absorbing chamber 5 is fixedly connected to the first rear side plate or the second rear side plate. An L-shaped shock-absorbing piston rod 501 is slidably arranged inside each shock-absorbing chamber 5, and the outer ends of the two shock-absorbing piston rods 501 are fixedly provided with the same shock-absorbing plate 4, which is a square plate-like structure located in the left and right vertical planes. A shock-absorbing spring 401 is arranged between the two shock-absorbing chambers 5, and the rear end of the shock-absorbing spring 401 is fixedly connected to the first rear side plate or the second rear side plate, and the front end of the shock-absorbing plate 4 is fixedly connected to the rear end surface of the shock-absorbing plate 4.

[0034] The two sets of airbags 6 for the shock-absorbing mechanism within the first mounting seat 2 are fixedly mounted on the inner walls of the first left and right panels, respectively. The two sets of airbags 6 for the shock-absorbing mechanism within the second mounting seat 3 are fixedly mounted on the inner walls of the second left and right panels, respectively. The end of the first connecting tube, remote from the airbags 6, communicates with the interior space of the shock-absorbing chamber 5 at the rear end of the shock-absorbing piston rod 501.

[0035] The pressure block 702 is an L-shaped structure, and the inner side of the front end surface of the pressure block 702 is a sloped structure. The two groups of movable chambers 7 of the shock-absorbing mechanism inside the first mounting seat 2 are fixedly arranged on the first rear side plate, and the two groups of pressure blocks 702 of the shock-absorbing mechanism inside the first mounting seat 2 are respectively fixedly arranged at the two corners on the upper side of the first rear side plate. The two groups of movable chambers 7 of the shock-absorbing mechanism inside the second mounting seat 3 are fixedly arranged on the second rear side plate, and the two groups of airbags 6 of the shock-absorbing mechanism inside the second mounting seat 3 are respectively fixedly arranged at the two corners on the lower side of the second rear side plate. One end of the second connecting tube is connected to the internal space of the movable chamber 7 at the rear end of the pressure piston rod 701, and the other end of the second connecting tube is connected to the internal space of the shock-absorbing chamber 5 at the rear end of the shock-absorbing piston rod 501.

[0036] Four connecting blocks 101 arranged in a square array are fixedly provided on the rear end face of the harmonic controller housing 1. The two connecting blocks 101 on the upper side are connected to the two shock-absorbing plates 4 inside the first mounting seat 2 through a clamping mechanism, and the two connecting blocks 101 on the lower side are fixedly connected to the two shock-absorbing plates 4 inside the second mounting seat 3.

[0037] The clamping mechanism includes a clamping block 402, an air cavity 403, a limiting piston rod 404, and a limiting spring 405. Two symmetrical sliding grooves are provided on the front end surface of the shock-absorbing plate 4 of the first mounting seat 2. A clamping block 402 is slidably installed in each sliding groove, and the front ends of the two clamping blocks 402 are separated from each other. A piston groove extending left and right is provided on the end surface of the two sliding grooves on the side away from each other. A limiting piston rod 404 is slidably installed in each piston groove. A limiting spring 405 is respectively sleeved on the outer side of the end of the two limiting piston rods 404 that are close to each other. The end of the limiting spring 405 that is away from the limiting piston rod 404 is fixedly connected to the clamping block 402 on the same side. An air cavity 403 is provided inside the shock-absorbing plate 4 of the first mounting seat 2. The air cavity 403 is connected to the end of the two piston grooves that are separated from each other.

[0038] Two vertical first sliding grooves are provided within the first rear side plate of the first mounting seat 2, and two vertical second sliding grooves are provided within the second rear side plate of the second mounting seat 3. A first exposed groove is provided at the front of the top end of the first sliding groove, and a second exposed groove is provided at the front of the bottom end of the second sliding groove. A vertical fixing spring 802 is fixedly provided at the top end of the first sliding groove and the bottom end of the second sliding groove. An L-shaped first fixing rod 8 is slidably provided within each first sliding groove, and the first fixing rod 8 abuts the fixing spring 802 within the first sliding groove. An L-shaped second fixing rod 9 is slidably provided within each second sliding groove, and the second fixing rod 9 abuts the fixing spring 802 within the second sliding groove. Both the first fixing rod 8 and the second fixing rod 9 include a vertical section and a horizontal section. The upper end of the vertical section of the first fixing rod 8 is fixedly connected to the rear end of the horizontal section. The vertical section of the first fixing rod 8 slides inside the first sliding groove. The lower end of the vertical section of the first fixing rod 8 extends to the outside of the lower end of the first sliding groove. The horizontal section of the first fixing rod 8 extends outward from the first exposed groove. A first engaging groove 801 is provided at the front end of the horizontal section of the first fixing rod 8. The first engaging groove 801 engages with the upper end of the shock-absorbing plate 4 inside the first mounting seat 2. The lower end of the vertical section of the second fixing rod 9 is fixedly connected to the rear end of the horizontal section. The vertical section of the second fixing rod 9 slides inside the second sliding groove. The upper end of the vertical section of the second fixing rod 9 extends to the outside of the upper end of the second sliding groove. The horizontal section of the second fixing rod 9 extends outward from the second exposed groove. A second engaging groove is provided at the front end of the horizontal section of the second fixing rod 9. The second engaging groove engages with the lower end of the shock-absorbing plate 4 inside the second mounting seat 3.

[0039] The working principle of the present invention is: When installing the harmonic controller based on power electronic harmonic suppression technology, firstly, bolts are passed through the four mounting holes 201 to firmly mount the first mounting base 2 on the surface of the dedicated bracket in the cabinet to construct the basic bearing platform of the system.

[0040] Then the two connecting blocks 101 on the lower side of the rear end of the harmonic controller housing 1 are fixedly connected to the two shock-absorbing plates 4 inside the second mounting seat 3, and then the harmonic controller housing 1 and the second mounting seat 3 are slid upward together against the first mounting seat 2. The upper ends of the two locking blocks 202 on the first mounting seat 2 are squeezed by the second left plate and the second right plate of the second mounting seat 3 and rotated back to the inside of the semicircular groove, and the lower ends of the two locking blocks 202 on the second mounting seat 3 are squeezed by the first left plate and the first right plate of the first mounting seat 2 and rotated back to the inside of the semicircular groove. When the first mounting seat 2 and the second mounting seat 3 are assembled and connected, the locking block 202 inside the first mounting seat 2 and the locking block 202 inside the second mounting seat 3 are combined into a complete circular block structure. At this time, under the action of the rebound force of the reset spring 204, the upper end of the locking block 202 inside the first mounting seat 2 rotates to the inside of the semicircular groove of the second mounting seat 3, and the lower end of the locking block 202 inside the second mounting seat 3 rotates to the inside of the semicircular groove of the first mounting seat 2. The locking block 202 inside the first mounting seat 2 is engaged with the semicircular groove of the second mounting seat 3, and the locking block 202 inside the second mounting seat 3 is engaged with the semicircular groove of the first mounting seat 2. The two locking blocks 202 engage with each other, so that the first mounting seat 2 and the second mounting seat 3 are fixedly connected and cannot be automatically disengaged.

[0041] When the first mounting base 2 and the second mounting base 3 are in contact with each other, the lower ends of the vertical sections of the two first fixing rods 8 are squeezed by the upper end of the second rear side plate of the second mounting base 3 and slide upward, thereby compressing the fixing spring 802 at the top end of the first sliding groove. At this time, the horizontal section of the first fixing rod 8 slides upward, causing the first engaging groove 801 at the end of the horizontal section of the first fixing rod 8 to disengage from the upper end of the shock-absorbing plate 4 inside the first mounting base 2, allowing the shock-absorbing plate 4 inside the first mounting base 2 to move freely. When the first mounting base 2 and the second mounting base 3 are in contact with each other, the upper ends of the vertical sections of the two second fixing rods 9 are squeezed by the lower end of the first rear side plate of the first mounting base 2 and slide downward, thereby compressing the fixing spring 802 at the bottom end of the second sliding groove. At this time, the horizontal section of the second fixing rod 9 slides downward, causing the second engaging groove at the end of the horizontal section of the second fixing rod 9 to disengage from the lower end of the shock-absorbing plate 4 inside the second mounting base 3, allowing the shock-absorbing plate 4 inside the second mounting base 3 to move freely.

[0042] As the harmonic controller housing 1 slides upward along with the second mounting base 3, the connection block 101 on the upper rear end of the harmonic controller housing 1 gradually enters between the two clamping blocks 402 of the clamping mechanism inside the first mounting base 2. The two limit springs 405 inside the clamping mechanism act in a manner that ensures that the two clamping blocks 402 are close to each other, thereby precisely clamping the connection block 101 and forming a stable mechanical constraint. When the connection block 101 and the clamping block 402 become worn and unevenly contacted due to long-term use, the clamping block 402 on the side with greater pressure will push the corresponding limit piston rod 404 to squeeze the gas in the air cavity 403 when under pressure. The pressure will be quickly transmitted to the limit piston rod 404 on the other side, driving the clamping block 402 on that side to slide outward, thereby achieving dynamic adaptive clamping of the connection block 101, ensuring that the clamping blocks 402 on both sides are always tightly fitted with the connection block 101, and avoiding vibration aggravation caused by loose connection.

[0043] When the harmonic controller generates vibration during operation, due to the clamping of the clamping block 402 and the limitation of the movement of the shock-absorbing piston rod 501 in the shock-absorbing chamber 5, the harmonic controller housing 1 first squeezes the shock-absorbing plate 4 laterally through the connecting block 101. The shock-absorbing plate 4 moves inward to squeeze the shock-absorbing spring 401 while pushing the shock-absorbing piston rod 501. The gas in the shock-absorbing chamber 5 forms a resistance buffer structure to protect the shock-absorbing spring 401, slowing down the aging of the shock-absorbing spring 401 caused by long-term load, and improving the service life of the device. The gas inside the damping chamber 5 is pressurized and enters the airbag 6 through the first connecting pipe, and at the same time enters the movable chamber 7 through the second connecting pipe, so that the airbag 6 expands and clings to the side wall of the harmonic controller housing 1. The gas entering the movable chamber 7 pushes the pressing piston rod 701 to slide outward, and the pressing piston rod 701 drives the pressing block 702 to slide outward, so that the four pressing blocks 702 are clamped at the four corners of the harmonic controller housing 1, further limiting the position of the harmonic controller housing 1 from multiple directions, thereby improving the overall service life and operational reliability of the harmonic controller.

[0044] When the harmonic controller needs to be disassembled, the two rotating handles 203 are rotated to control the two locking rods 205 inside the first mounting seat 2 to rotate inside the fan-shaped groove, so that the return spring 204 inside the first mounting seat 2 is compressed, driving the two locking blocks 202 inside the first mounting seat 2 to return to the two semicircular grooves of the first mounting seat 2, so that the two locking blocks 202 inside the second mounting seat 3 also return to the two semicircular grooves of the second mounting seat 3. At this time, the first mounting seat 2 can be detached from the second mounting seat 3. During the process of disengaging the first mounting seat 2 from the second mounting seat 3, under the action of the rebound force of the fixing spring 802, the first fixing rod 8 inside the first sliding groove slides downward, so that the first clamping groove 801 on the first fixing rod 8 clamps and fixes the upper end of the shock-absorbing plate 4 inside the first mounting seat 2, and the second fixing rod 9 inside the second sliding groove slides upward, so that the second clamping groove on the second fixing rod 9 clamps and fixes the lower end of the shock-absorbing plate 4 inside the second mounting seat 3, isolating the external force generated by the disassembly operation, avoiding the staff's disassembly action from causing pulling, collision and other damage to the shock-absorbing mechanism, reducing the risk of accidental damage to the shock-absorbing mechanism, extending the service life of the shock-absorbing mechanism, and reducing maintenance costs.

[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A harmonic controller based on power electronic harmonic suppression technology, characterized by: The invention comprises a first mounting seat (2), a second mounting seat (3) being slidably arranged on the first mounting seat (2), and a harmonic controller housing (1) being plugged into the interior of the second mounting seat (3); the first mounting seat (2) and the second mounting seat (3) being connected via a locking mechanism; two groups of shock absorbing mechanisms are arranged on the inner sides of the first mounting seat (2) and the second mounting seat (3), the shock absorbing mechanisms comprising a shock absorbing chamber (5), an air bag (6), and a moving chamber (7); a shock absorbing piston rod (501) being slidably arranged inside the shock absorbing chamber (5), and the shock absorbing piston rod (501) being externally movable. A damping plate (4) is fixedly provided at one end of the side, a pressing piston rod (701) is slidably provided inside the movable cavity (7), a pressing block (702) is fixedly provided outside the pressing piston rod (701), the damping cavity (5) is connected to the airbag (6) through a first connecting tube, and the damping cavity (5) is connected to the movable cavity (7) through a second connecting tube; the damping plate (4) inside the first mounting seat (2) is connected to the harmonic controller housing (1) through a clamping mechanism, and the damping plate (4) inside the second mounting seat (3) is fixedly connected to the harmonic controller housing (1).

2. The harmonic controller based on power electronic harmonic suppression technology according to claim 1, characterized in that: The first mounting seat (2) includes a first rear side panel, a first left side panel, a first right side panel, and a top panel. The rear end of the top panel is fixedly connected to the upper end of the first rear side panel, the left and right ends of the top panel are respectively fixedly connected to the upper ends of the first left side panel and the first right side panel, and the left and right ends of the first rear side panel are respectively fixedly connected to the rear ends of the first left side panel and the first right side panel; the front-to-back length of the top panel is greater than the front-to-back length of the first left side panel and the first right side panel, and the height of the first rear side panel is equal to the height of the first left side panel and the first right side panel; the second mounting seat (3) includes a second rear side panel, a second left side panel, a second right side panel, and a bottom panel; the second left side panel and the second right side panel each include a front half and a rear half, and the front half and the rear half are The bottom ends of the first and second left panels overlap, and the height of the front half is greater than that of the rear half; the left and right ends of the bottom plate are fixedly connected to the lower ends of the second left panel and the second right panel respectively, and the left and right ends of the second rear panel are fixedly connected to the rear end of the rear half of the second left panel and the rear end of the rear half of the second right panel respectively; when the first mounting seat (2) is connected to the second mounting seat (3), the first rear panel overlaps with the second rear panel, the first left panel overlaps with the second left panel, and the first right panel overlaps with the second right panel, and the left and right ends of the top plate are in contact with the upper end of the front half of the second left panel and the upper end of the front half of the second right panel respectively, and at this time, the first mounting seat (2) and the second mounting seat (3) are combined into a square box structure with an open front end.

3. The harmonic controller based on power electronic harmonic suppression technology according to claim 2, characterized in that: A set of locking mechanisms is provided between the front end of the first left side plate of the first mounting seat (2) and the rear end of the front half of the second left side plate of the second mounting seat (3), and a set of locking mechanisms is also provided between the front end of the first right side plate of the first mounting seat (2) and the rear end of the front half of the second right side plate of the second mounting seat (3); the locking mechanisms include a locking block (202) and a locking rod (205); a semicircular groove is provided at the front end of the first left side plate and the front end of the first right side plate of the first mounting seat (2), respectively, and a semicircular groove is provided at the rear end of the front half of the second left side plate and the rear end of the front half of the second right side plate of the second mounting seat (3), and a fan-shaped groove is provided at one end of the inner side of each semicircular groove, and the semicircular grooves are connected to the fan-shaped grooves; a semicircular locking block (202) is rotatably provided in each semicircular groove, and a locking rod (205) is fixedly provided in the middle of the outer arc surface of each locking block (202), and the locking rod (205) is located on the inner side of the fan-shaped groove.

4. The harmonic controller based on power electronic harmonic suppression technology according to claim 3, characterized in that: The locking mechanism further comprises a rotating handle (203) and a return spring (204); a return spring (204) is fixedly provided on the inner wall of one end of the lower side of the two fan-shaped grooves of the first mounting seat (2), and a return spring (204) is fixedly provided on the inner wall of one end of the upper side of the two fan-shaped grooves of the second mounting seat (3), and the end of the return spring (204) is fixedly connected to the locking rod (205) inside the fan-shaped groove; an arc-shaped toggle groove is provided on the outer wall of the two fan-shaped grooves of the first mounting seat (2), and a rotating handle (203) is slidably provided inside each toggle groove, and the inner ends of the two rotating handles (203) are fixedly connected to the ends of the two locking rods (205) inside the first mounting seat (2) away from the locking block (202).

5. The harmonic controller based on power electronic harmonic suppression technology according to claim 2, characterized in that: The two shock absorbing mechanisms inside the first mounting seat (2) are arranged at two corners on the upper side of the first rear side plate, and the two shock absorbing mechanisms inside the second mounting seat (3) are arranged at two corners on the lower side of the second rear side plate; the shock absorbing mechanisms also include shock absorbing springs (401); each group of shock absorbing mechanisms includes two shock absorbing chambers (5), and the two shock absorbing chambers (5) are interlocked; the front end of the shock absorbing chamber (5) remains open, and the rear end of the shock absorbing chamber (5) is fixedly connected to the first rear side plate or the second rear side plate; a shock absorbing piston rod (501) is slidably arranged inside each shock absorbing chamber (5), and the outer ends of the two shock absorbing piston rods (501) are fixedly provided with the same shock absorbing plate (4); a shock absorbing spring (401) is arranged between the two shock absorbing chambers (5), the rear end of the shock absorbing spring (401) is fixedly connected to the first rear side plate or the second rear side plate, and the front end of the shock absorbing plate (4) is fixedly connected to the rear end surface of the shock absorbing plate (4).

6. The harmonic controller based on power electronic harmonic suppression technology according to claim 5, characterized in that: The two groups of air bags (6) of the shock absorbing mechanism inside the first mounting seat (2) are fixedly arranged on the inner walls of the first left plate and the first right plate, respectively; the two groups of air bags (6) of the shock absorbing mechanism inside the second mounting seat (3) are fixedly arranged on the inner walls of the second left plate and the second right plate, respectively; the end of the first connecting tube away from the air bag (6) is connected to the internal space of the shock absorbing chamber (5) at the rear end of the shock absorbing piston rod (501).

7. The harmonic controller based on power electronic harmonic suppression technology according to claim 5, characterized in that: The pressing block (702) is an L-shaped structure. The two groups of movable chambers (7) of the shock absorbing mechanism inside the first mounting seat (2) are fixedly arranged on the first rear side plate. The two groups of pressing blocks (702) of the shock absorbing mechanism inside the first mounting seat (2) are respectively fixedly arranged at the two corners on the upper side of the first rear side plate; the two groups of movable chambers (7) of the shock absorbing mechanism inside the second mounting seat (3) are fixedly arranged on the second rear side plate. The two groups of air bags (6) of the shock absorbing mechanism inside the second mounting seat (3) are respectively fixedly arranged at the two corners on the lower side of the second rear side plate; one end of the second connecting tube is connected to the internal space of the movable chamber (7) at the rear end of the pressing piston rod (701), and the other end of the second connecting tube is connected to the internal space of the shock absorbing chamber (5) at the rear end of the shock absorbing piston rod (501).

8. The harmonic controller based on power electronic harmonic suppression technology according to claim 1, characterized in that: Four connecting blocks (101) arranged in a square array are fixedly provided on the rear end surface of the harmonic controller housing (1); the two connecting blocks (101) on the upper side are connected to the two damping plates (4) inside the first mounting seat (2) through a clamping mechanism; and the two connecting blocks (101) on the lower side are fixedly connected to the two damping plates (4) inside the second mounting seat (3).

9. The harmonic controller based on power electronic harmonic suppression technology according to claim 8, characterized in that: The clamping mechanism comprises a clamping block (402), an air cavity (403), a limiting piston rod (404), and a limiting spring (405); two left-right symmetrical sliding grooves are provided on the front end surface of the shock-absorbing plate (4) of the first mounting seat (2), a clamping block (402) is slidably provided in each sliding groove, a piston groove extending left-right is provided on the end surface of the two sliding grooves away from each other, a limiting piston rod (404) is slidably provided in each piston groove, a limiting spring (405) is respectively sleeved on the outer side of the ends of the two limiting piston rods (404) close to each other, and the end of the limiting spring (405) away from the limiting piston rod (404) is fixedly connected to the clamping block (402) on the same side; an air cavity (403) is provided inside the shock-absorbing plate (4) of the first mounting seat (2), and the air cavity (403) is connected to the ends of the two piston grooves away from each other.

10. The harmonic controller based on power electronic harmonic suppression technology according to claim 2, characterized in that: Two vertical first sliding grooves are provided inside the first rear side plate of the first mounting seat (2), and two vertical second sliding grooves are provided inside the second rear side plate of the second mounting seat (3), a first exposed groove is provided on the front side of the top end of the first sliding groove, and a second exposed groove is provided on the front side of the bottom end of the second sliding groove; a vertical fixing spring (802) is fixedly provided at the top end of the first sliding groove and the bottom end of the second sliding groove; an L-shaped first fixing rod (8) is slidably provided inside each first sliding groove, the first fixing rod (8) abuts against the fixing spring (802) inside the first sliding groove, and an L-shaped second fixing rod (9) is slidably provided inside each second sliding groove, the second fixing rod (9) abuts against the fixing spring (802) inside the second sliding groove, and the first fixing rod (8) and the second fixing rod (9) both include a vertical section and a horizontal section; the vertical section of the first fixing rod (8) The upper end of the segment is fixedly connected to the rear end of the horizontal segment, the vertical segment of the first fixed rod (8) slides inside the first sliding groove, the lower end of the vertical segment of the first fixed rod (8) extends to the outside of the lower end of the first sliding groove, the horizontal segment of the first fixed rod (8) extends outward from the first exposed groove, a first clamping groove (801) is provided at the front end of the horizontal segment of the first fixed rod (8), the first clamping groove (801) is clamped with the upper end of the shock-absorbing plate (4) inside the first mounting seat (2); the lower end of the vertical segment of the second fixed rod (9) is fixedly connected to the rear end of the horizontal segment, the vertical segment of the second fixed rod (9) slides inside the second sliding groove, the upper end of the vertical segment of the second fixed rod (9) extends to the outside of the upper end of the second sliding groove, the horizontal segment of the second fixed rod (9) extends outward from the second exposed groove, a second clamping groove is provided at the front end of the horizontal segment of the second fixed rod (9), the second clamping groove is clamped with the lower end of the shock-absorbing plate (4) inside the second mounting seat (3).

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