CN112751492A - Three-phase grid-connected inverter adopting optical fiber transmission - Google Patents
Three-phase grid-connected inverter adopting optical fiber transmission Download PDFInfo
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 13
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 25
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- 238000007789 sealing Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 239000007769 metal material Substances 0.000 claims description 5
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20909—Forced ventilation, e.g. on heat dissipaters coupled to components
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20927—Liquid coolant without phase change
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Abstract
The invention discloses a three-phase grid-connected inverter adopting optical fiber transmission, which comprises a fixed main body, wherein the outer surface of the front end of the fixed main body is fixedly connected with a sealing cover through screws, the fixed main body is distributed in an annular structure, the fixed main body is made of high-strength metal, a protection mechanism is arranged in the fixed main body, four groups of supporting mechanisms are distributed on the outer surface of the fixed main body at equal intervals in an annular shape, the structure of the device aims to modularly connect and fix the main body of the traditional plate-type inverter, each module is connected through a detachable wire, once a fault occurs, a maintainer can complete maintenance only by replacing the corresponding module, the inspection and maintenance difficulty is reduced, the period is shortened, the maintenance cost is reduced, the reliability and the stability of the device are improved by adopting a modularized design, and the stability of the device in a severe strong wind environment can be effectively ensured by matching with, and meanwhile, heat dissipation and cooling are provided for the equipment.
Description
Technical Field
The invention relates to the technical field of inverters, in particular to a three-phase grid-connected inverter adopting optical fiber transmission.
Background
A grid-connected inverter (GTI for short) is a special inverter, which can convert dc power to ac power, and the output ac power can be synchronized with the frequency and phase of the commercial power, so that the output ac power can be returned to the commercial power. Grid-tied inverters are commonly used in some applications where a dc voltage source (e.g., solar panels or small wind generators) is connected to the grid.
The utility model provides an adopt optic fibre transmission's three-phase grid-connected inverter, it includes rectifier unit, contravariant unit, sampling module and digital control module, the rectifier unit is connected with the contravariant unit, the contravariant unit is connected with sampling module, sampling module is connected with digital control module, still be equipped with drive protection module between digital control module and the contravariant unit, be equipped with fiber generator on the digital control module, be equipped with the optic fibre acceptor on the drive protection module, adopt fiber connection between fiber generator and the optic fibre acceptor, the utility model discloses an optic fibre transmission design utilizes optic fibre conduction signal, greatly reduced the electromagnetic interference in the transmission course, has strengthened the stability of system.
The prior patent (publication number: CN203261246U) discloses a three-phase grid-connected inverter, which comprises a box body, wherein an input module, a boosting module, an inversion module, a filtering module, a control module and an output module are arranged in the box body, the input module is sequentially connected with the boosting module, the inversion module, the filtering module and the output module, the control module is bidirectionally connected with the boosting module and the inversion module, a power supply module supplies power to the control module, each module is independently arranged in the box body, each module is fixed in a movable connection mode, movable and detachable wire connections are adopted between the modules, the utility model adopts a modular design, and the modules are detachably connected by wires, so that maintenance personnel can complete maintenance only by replacing the corresponding modules once a fault occurs, the inspection and maintenance difficulty is reduced, the cycle is shortened, the maintenance cost is reduced, and the modular design is adopted, so that the reliability and the stability of the system are improved.
In the process of implementing the invention, the inventor finds that at least the following problems in the prior art are not solved: 1. with the aggravation of energy crisis and greenhouse effect, renewable, clean, pollution-free and safe solar energy becomes the first choice for new energy development, and a photovoltaic power station becomes an important way for utilizing solar energy due to the advantages of safety, reliability, no pollution, simple maintenance, unattended operation and abundant resources. The photovoltaic power generation has good compatibility, can be mixed with other energy sources for use, and even can gradually replace the traditional energy sources, the existing three-phase grid-connected inverter adopts a single-plate design, once a fault occurs, the fault point is difficult to judge, so that the overhaul difficulty and the overhaul period are prolonged, and when certain part of the inverter is damaged and cannot be repaired, the whole inverter is scrapped, and the maintenance cost is increased; 2. aiming at the construction environment of solar power generation and photovoltaic power stations, the environment where the three-phase grid-connected inverter is located is mostly an open area without a shelter, the wind power is larger under the environment again, a small part of cables are still arranged outside in the process of building the three-phase grid-connected inverter, under the blowing of the wind power, the cables are easy to rub against other objects, and the cables are also easy to wind to cause cable damage and equipment short circuit damage.
Therefore, a three-phase grid-connected inverter adopting optical fiber transmission is provided.
Disclosure of Invention
The invention aims to provide a three-phase grid-connected inverter adopting optical fiber transmission, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a three-phase grid-connected inverter adopting optical fiber transmission comprises a fixed main body, wherein the outer surface of the front end of the fixed main body is fixedly connected with a sealing cover through a screw, the fixing main body is distributed in an annular structure, the fixing main body is made of high-strength metal, a protection mechanism is arranged in the fixing main body, four groups of supporting mechanisms are annularly and equidistantly distributed on the outer surface of the fixing main body, and the supporting mechanisms are internally provided with unit modules, a buffer mechanism is arranged between every two adjacent supporting mechanisms, an elastic compensation mechanism is arranged between the unit modules and the fixed main body, when the elastic compensation mechanism is used for supporting the unit module by the supporting mechanism, the elastic compensation module is synchronously utilized to stabilize the stability of the supporting mechanism in the state of supporting the unit module by the supporting mechanism in the process of elastically buffering the external impact force by the buffering mechanism, meanwhile, the elastic deformation of the part of the buffer mechanism and the support mechanism in a matching state is further compensated;
the protection mechanism comprises an expansion film, arc-shaped metal strips, balls, clamping grooves and cables, wherein the expansion film is in an annular structure and is fixedly glued inside a fixed main body distributed in an annular structure, the expansion film is in an inflated state in a silent state, the transverse cross section of the expansion film is distributed in a U-shaped structure, the inner surface of the expansion film is glued with a plurality of arc-shaped metal strips, the plurality of arc-shaped metal strips are distributed annularly and equidistantly, the clamping grooves are formed inside the arc-shaped metal strips, the balls are arranged inside the clamping grooves equidistantly, the balls are located on the inner surfaces of the arc-shaped metal strips and are fixedly connected in an embedded mode, the cables are arranged inside the clamping grooves, and the cables are attached to the surfaces of the clamping grooves formed on the inner surfaces of the arc-shaped;
the supporting mechanism comprises a right fixing plate, a left fixing plate, a fixing strip, a first sliding block, a first sliding groove and a fixing groove, wherein the left fixing plate and the right fixing plate are symmetrically distributed on the outer surface of the fixing main body, a unit module is positioned between the left fixing plate and the right fixing plate, the structural sizes of the left fixing plate and the right fixing plate are the same, the adjacent surfaces of the left fixing plate and the right fixing plate, which are attached to the unit module, are fixedly connected with the first sliding block, the left side and the right side of the unit module are respectively provided with the first sliding groove, the first sliding block is positioned in the first sliding groove in a sliding and clamping connection mode, the front part and the rear part of the outer surface of the upper end of the unit module are symmetrically distributed with the fixing strip made of high-toughness metal materials, the fixing strip is distributed in a U-shaped structure, the two ends of the, fixing grooves are formed in the annular side surface of the fixing main body and are close to the lower end regions of the left fixing plate and the right fixing plate, and the lower ends of the left fixing plate and the right fixing plate are located inside the fixing grooves;
the buffer mechanism comprises an elastic plate, an expansion airbag, a buffer strip and an air pipe, wherein the elastic plate is distributed in an annular curling shape, one end of the elastic plate is fixedly connected with a fixed part of the outer surface of a left fixed plate, the other end of the elastic plate is a free movable end, the expansion airbag is glued inside the elastic plate and is distributed in a cylindrical structure, the front end of the expansion airbag is fixedly connected with the air pipe, the other end of the air pipe penetrates through the fixed main body to extend into the internal protection mechanism to be fixedly connected with the inner part of the expansion film, the buffer mechanisms are arranged on the outer surfaces of the left fixed plate and the right fixed plate in the adjacent supporting mechanism on the annular side surface of the fixed main body, and the elastic plates in the;
the first sliding groove is formed by stamping a heat-conducting copper metal material and is connected to two sides of the unit module in an embedded mode, the elastic plate in the buffering mechanism, the fixing portion of the left fixing plate and the right fixing plate in the supporting mechanism and the first sliding block are all made of heat-conducting copper, and the first sliding groove is matched with the expansion air bag in the buffering mechanism to form a heat dissipation mechanism.
Preferably, the lower extreme one side longitudinal symmetry fixed mounting of left side fixed plate has the guide block, and the inside of fixed slot corresponds the position with the guide block and has seted up the guide way, the guide block is pegged graft and is fixed in the inside of guide way, the fixture block is gone up to the lower extreme surface equidistance fixedly connected with a plurality of left side fixed plate and right fixed plate, and fixed slot internal surface corresponds position fixedly connected with lower fixture block with last fixture block, it is the design of right trapezoid cross-section and crisscross grafting each other fixedly to go up the fixture block, the mounting hole has been seted up to the position that left side fixed plate lower extreme surface and fixed slot internal surface are close.
Preferably, the surface of left side fixed plate is close to the position fixedly connected with baffle at both ends around the elastic plate, the baffle is circular structure and distributes, and its diameter is greater than opening diameter around the elastic plate under the crimp state, the baffle is hollow out construction design, the surface of left side fixed plate is close to elastic plate free activity end position and has seted up spout two, and elastic plate free activity end fixedly connected with slider two, slider two sets up inside spout two, and its both are T type structural design and match each other and sliding connection.
Preferably, the inside of inflation gasbag is provided with the water film, the water film also is the inside central point that cylindricality structure distributes at the inflation gasbag and puts, and both ends and the seamless cementing of inflation gasbag are fixed around it, form the water cavity between inflation gasbag and the water film, the inside formation air chamber of cylindricality structure water film, tracheal one end is connected with the air chamber, the surface upper end of inflation gasbag is provided with the water injection valve, and the upper end of water injection valve runs through the surface that extends to the elastic plate.
Preferably, the elastic compensation mechanism comprises a guide rod, a spherical end, a wiring groove, an elastic clamping block and a through groove, the upper end of the guide rod is fixedly connected with the center of the lower end of the unit module, the lower end of the guide rod is fixedly connected with the spherical end, the guide rod is connected with the spherical end in an integrated manner, the wiring groove is formed in the spherical end and the guide rod, the elastic clamping block made of rubber is arranged in the wiring groove in the spherical end, the through groove is formed in the fixing body, and the cable in the unit module is clamped and extended to the inside of the fixing body in a penetrating manner to be fixed in the clamping groove in the protecting mechanism.
Preferably, the elastic compensation mechanism further comprises an elastic strip and a linking groove, the position of the through groove close to the spherical end is in a circular structure and is in mutual matching and movable connection with the spherical end, the two sides of the outer surface of the spherical end are symmetrically provided with a plurality of linking grooves, the elastic strip is prevented from being inserted in the linking groove and is fixedly connected with the inner surface of the through groove, the radian of the elastic strip is gradually reduced from top to bottom, and the directions of the elastic strips on the left side and the right side of the inner surface of the through groove are designed in opposite directions.
Compared with the prior art, the invention has the beneficial effects that:
1. when the device is used, when external wind power is large and blows the unit module main body, the impact force generated by the wind power blowing unit module main body is primarily buffered and fixed through the left fixing plate and the right fixing plate in the buffering mechanism, due to different wind directions, the left fixing plate and the right fixing plate not only buffer and absorb shock through self deformation in the deformation process, meanwhile, when the left fixing plate and the right fixing plate are bent and deformed, the elastic plate in the buffering mechanism on one side is compressed, the elastic plate bends in a guiding manner under the action of the sliding block II and the sliding groove II and compresses the internal expansion airbag to buffer and absorb shock again, then the elastic plate in the adjacent buffering further uniformly disperses the buffer force to other buffering mechanisms and supporting mechanisms through pulling the elastic strip again, the overall buffering and the shock absorption of the whole device are realized, and the overall stability of the unit module device in the operation process is ensured, meanwhile, the elastic plate, the expansion airbag, the baffle plate, the left fixing plate and the right fixing plate in the buffer mechanism are matched with the material of the first sliding block and the material of the first sliding chute in the shape, so that heat generated in the operation process of the unit modules can be conducted as much as possible, the device has a good heat dissipation function, the temperature of the device is ensured not to rise rapidly, and the normal operation of the device is influenced, the structure of the device aims to modularly connect and fix the main body of the traditional plate-type inverter, all the modules are connected by adopting detachable wires, once a fault occurs, maintenance personnel can complete maintenance only by replacing the corresponding modules, the inspection and maintenance difficulty is reduced, the period is shortened, the maintenance cost is reduced, the reliability and the stability of the device are improved by adopting a modularized design, and the device is matched with the support mechanism and the buffer mechanism to be used, so that the stability of the, meanwhile, heat dissipation and cooling are provided for the equipment;
2. by adding the protection mechanism in the device, when the buffer mechanism is matched with the supporting mechanism to use, the expansion airbag in the buffer mechanism is matched with the guiding elastic deformation of the elastic plate to compress the expansion airbag in the left fixing plate under the deformation action, so that the gas in the expansion airbag is compressed and conveyed to the expansion film in the protection mechanism through the air pipe, the expansion film expands at the moment, a plurality of groups of cables in the expansion film are tightened and fixed, the arc-shaped metal strips with fixed surfaces are deformed in the expansion process of the expansion film, the cable is further limited by the matching of the clamping grooves and the balls, the cable is clamped and fixed, meanwhile, the design of the balls avoids the damage to the surface caused by slight pulling of the displacement friction force angle in the cable tightening process, the friction resistance between the cable and the arc-shaped metal strips can be reduced through the rolling of the balls, and the cable is further protected, the device structure aim at solves the great regional use of wind-force, and the cable suffers wind-force to blow to rock and the foreign object friction, and the winding phenomenon of knoing takes place between the adjacent cable, effectually protects the cable, reduces the damage probability, guarantees the normal operating of equipment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is an overall structural view of the present invention;
FIG. 2 is an enlarged view of the invention at A in FIG. 1;
FIG. 3 is an enlarged view of the invention at B of FIG. 1;
FIG. 4 is an enlarged view of the invention at C of FIG. 1;
FIG. 5 is an enlarged view of the invention at D of FIG. 1;
FIG. 6 is a combination view of the elastic strip of the present invention with an adjacent elastic panel;
FIG. 7 is a view of the combination of the spring plate and the baffle of the present invention;
FIG. 8 is a top view of a unit module of the present invention;
FIG. 9 is a cross-sectional view of the interior of the inflatable bladder of the present invention;
figure 10 is a cross-sectional view of a fixation body of the present invention.
Description of reference numerals:
1. a fixed body; 11. a sealing cover;
2. a protection mechanism; 21. an intumescent film; 22. an arc-shaped metal strip; 23. a ball bearing; 24. a clamping groove; 25. a cable;
3. a support mechanism; 31. a right fixing plate; 32. a left fixing plate; 33. a fixing strip; 34. a first sliding block; 35. a first sliding chute; 36. fixing grooves;
311. mounting holes; 312. an upper clamping block; 313. a lower clamping block; 314. a guide block; 315. a guide groove;
4. a buffer mechanism; 41. an elastic plate; 411. a baffle plate; 42. inflating the balloon; 43. a buffer strip; 44. an air tube; 45. a second sliding block; 46. a second chute;
421. an air chamber; 422. a water chamber; 423. a water film; 424. a water injection valve;
5. a unit module;
6. an elastic compensation mechanism; 61. a guide bar; 62. a spherical end; 63. wiring grooves; 64. an elastic clamping block; 65. an elastic strip; 66. a joining groove; 67. a through groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 10, the present invention provides a technical solution:
a three-phase grid-connected inverter adopting optical fiber transmission comprises a fixed main body 1, wherein the outer surface of the front end of the fixed main body 1 is fixedly connected with a sealing cover 11 through screws, the fixed main body 1 is distributed in an annular structure, the fixed main body 1 is composed of high-strength metal, a protection mechanism 2 is arranged in the fixed main body 1, four groups of supporting mechanisms 3 are distributed on the outer surface of the fixed main body 1 in an annular and equidistant mode, unit modules 5 are arranged in the supporting mechanisms 3, a buffer mechanism 4 is arranged between every two adjacent supporting mechanisms 3, an elastic compensation mechanism 6 is arranged between each unit module 5 and the fixed main body 1, when the elastic compensation mechanism 6 is used for supporting the unit modules 5 by the supporting mechanisms 3, the elastic compensation module is synchronously used for stabilizing the stability of the supporting mechanisms 3 in the state of supporting the unit modules 5 in the process of responding to external impact force elastic, meanwhile, the elastic deformation of the part of the buffer mechanism 4 and the support mechanism 3 in the matching state is further compensated;
the protection mechanism 2 comprises an expansion film 21, arc-shaped metal strips 22, balls 23, clamping grooves 24 and cables 25, wherein the expansion film 21 is fixedly connected in an annular structure inside the fixing main body 1 distributed in an annular structure, the expansion film 21 is in an inflated state in a silent state, the transverse section of the expansion film 21 is distributed in a U-shaped structure, the inner surface of the expansion film 21 is fixedly connected with a plurality of arc-shaped metal strips 22, the arc-shaped metal strips 22 are distributed in an annular and annular shape at equal intervals, the clamping grooves 24 are formed inside the arc-shaped metal strips 22, the balls 23 are arranged inside the clamping grooves 24 at equal intervals, the balls 23 are positioned on the inner surface of the arc-shaped metal strips 22 and are fixedly connected in an embedded manner, the cables 25 are arranged inside the clamping grooves 24, and the cables 25 are attached to the surfaces of the clamping grooves 24 formed on the inner surface of;
the supporting mechanism 3 comprises a right fixing plate 31, a left fixing plate 32, a fixing strip 33, a first sliding block 34, a first sliding groove 35 and a fixing groove 36, wherein the left fixing plate 32 and the right fixing plate 31 are symmetrically distributed on the outer surface of the fixing main body 1, the unit module 5 is positioned between the left fixing plate and the right fixing plate, the left fixing plate 32 and the right fixing plate 31 are same in structural size, the adjacent surfaces of the left fixing plate 32 and the right fixing plate 31, which are attached to the unit module 5, are fixedly connected with the first sliding block 34, the left side and the right side of the unit module 5 are respectively provided with the first sliding groove 35, the first sliding block 34 is positioned in the first sliding groove 35 and is connected in a sliding and clamping manner, the fixing strips 33 are symmetrically distributed on the front and back of the outer surface of the upper end of the unit module 5, the fixing strips 33 are made of high-toughness metal materials, the fixing strips 33 are distributed, the upper half part of the fixing body 1 is a fixing part, the lower half part of the fixing body is a flexible deformation part, fixing grooves 36 are formed in the annular side surface of the fixing body 1 close to the lower end regions of the left fixing plate 32 and the right fixing plate 31, and the lower ends of the left fixing plate 32 and the right fixing plate 31 are located inside the fixing grooves 36;
the buffer mechanism 4 comprises an elastic plate 41, an expansion airbag 42, a buffer strip 43 and an air pipe 44, wherein the elastic plate 41 is distributed in an annular curling shape, one end of the elastic plate is fixedly connected with a fixed part of the outer surface of the left fixing plate 32, the other end of the elastic plate is a free movable end, the expansion airbag 42 is glued inside the elastic plate 41, the expansion airbag 42 is distributed in a cylindrical structure, the front end of the expansion airbag 42 is fixedly connected with the air pipe 44, the other end of the air pipe 44 penetrates through the fixing main body 1 and extends into the internal protection mechanism 2 to be fixedly connected with the inside of the expansion membrane 21, the buffer mechanisms 4 are arranged on the outer surfaces of the left fixing plate 32 and the right fixing plate 31 in the adjacent supporting mechanism 3 on the annular side surface of the fixing main body 1, and the elastic plates 41 in;
the first sliding groove 35 is formed by stamping a heat-conducting copper metal material and is connected to two sides of the unit module 5 in an embedded manner, the elastic plate 41 in the buffer mechanism 4, a fixing part of the left fixing plate 32 and the right fixing plate 31 in the supporting mechanism 3 and the first sliding block 34 are all made of heat-conducting copper, and the heat-radiating mechanism is formed by matching with the expansion air bag 42 in the buffer mechanism 4.
As an embodiment of the present invention, a guide block 314 is vertically and symmetrically fixedly installed on one side of the lower end of the left fixing plate 32, a guide groove 315 is formed in the fixing groove 36 at a position corresponding to the guide block 314, the guide block 314 is inserted and fixed in the guide groove 315, a plurality of upper latch blocks 312 are fixedly connected to the outer surfaces of the lower ends of the left fixing plate 32 and the right fixing plate 31 at equal intervals, a lower latch block 313 is fixedly connected to the inner surface of the fixing groove 36 at a position corresponding to the upper latch block 312, the upper latch block 312 and the lower latch block 313 are designed in a right trapezoid cross section and are inserted and fixed in a staggered manner, and a mounting hole 311 is formed in the outer surface of the lower end of the left fixing plate 32 and the inner surface.
During operation, when installing left fixed plate 32, right fixed plate 31 on fixed main part 1, at first correspond with the preliminary direction displacement of guide way 315 through guide block 314, it corresponds with lower fixture block 313 dislocation cross to go up fixture block 312 this moment, and utilize mounting hole 311 to squeeze into the bolt, with its monolithic stationary, the design of this structure is convenient for follow-up supporting mechanism 3 and buffer gear 4 use can increase left fixed plate 32, stability between right fixed plate 31 and the fixed main part 1, last fixture block 312 through the dislocation distribution can increase the external stress between left fixed plate 32 and fixed plate and the fixed main part 1 with lower fixture block 313 and drag, guarantee that equipment possesses excellent fixed effect.
As an embodiment of the present invention, the positions of the outer surface of the left fixing plate 32 near the front and rear ends of the elastic plate 41 are fixedly connected with baffles 411, the baffles 411 are distributed in a circular structure, the diameter of the baffles 411 is larger than the diameter of the front and rear openings of the elastic plate 41 in a curled state, the baffles 411 are designed in a hollow structure, the position of the outer surface of the left fixing plate 32 near the free movable end of the elastic plate 41 is provided with a second sliding slot 46, the free movable end of the elastic plate 41 is fixedly connected with a second sliding block 45, the second sliding block 45 is arranged inside the second sliding slot 46, and the two sliding blocks are mutually matched and slidably connected in a T.
When the buffer mechanism 4 works, in the using process, under the external wind blowing, one of the left fixing plate 32 and the right fixing plate 31 pulls one elastic deformation to correspond to the impact force under the wind blowing according to the wind direction, and the elastic plate 41 also generates deformation to correspond to the impact force in the elastic deformation process, but the deformation of the elastic plate 41 is not only used for buffering and damping but also used for curling and compressing the internal expansion air bag 42, so that in order to avoid the dislocation of the expansion air bag 42, the sliding block II 45 and the sliding groove II 46 are added on the basis of the structure to be connected in a sliding manner to further guide displacement compression, and in order to ensure that the front end and the rear end of the expansion air bag 42 are not deformed before and after being compressed, the internal gas compression error is avoided, and simultaneously, the front end opening and the rear end opening are in an air circulation state to perform good heat dissipation in the subsequent using process of, the design of fretwork formula baffle 411 can inject the inside gas of inflation gasbag 42 mistake deformation and can not normally quote the inside problem of inflation membrane 21, also can ensure the inside ventilation cooling of elastic plate 41 simultaneously.
As an embodiment of the present invention, a water film 423 is disposed inside the inflatable air bag 42, the water film 423 is also distributed in a cylindrical structure at the center of the inside of the inflatable air bag 42, the front end and the rear end of the water film 423 are fixed to the inflatable air bag 42 by seamless bonding, a water cavity 422 is formed between the inflatable air bag 42 and the water film 423, an air chamber 421 is formed inside the cylindrical structure water film 423, one end of the air tube 44 is connected to the air chamber 421, a water injection valve 424 is disposed at the upper end of the outer surface of the inflatable air bag 42, and the upper end of the water injection valve 424 extends to the outer surface of the elastic plate 41.
During operation, the effect of cooling the heat conduction temperature by natural air flowing only in the process of conducting heat to the main body of the unit module 5 through the elastic plate 41 in cooperation with the left fixing plate 32 and the right fixing plate 31 is obviously not ideal, so that a water cavity 422 is designed in the contact area of the expansion airbag 42 and the elastic plate 41, a proper amount of cold water is injected into the water cavity 422, the heat transferred between the elastic plate 41 and the left fixing plate 32 or the right fixing plate 31 is absorbed by the cold water, and then the temperature is naturally cooled in the air outside, so that an excellent cooling effect is achieved, meanwhile, noise is inevitably generated due to deformation and bending of the elastic plate 41, and the structure can also reduce noise and avoid noise pollution.
As an embodiment of the present invention, the elastic compensation mechanism 6 includes a guide rod 61, a spherical end 62, a wiring groove 63, an elastic engaging block 64, and a through groove 67, the upper end of the guide rod 61 is fixedly connected to the central position of the lower end of the unit module 5, and the lower end of the guide rod 61 is fixedly connected to the spherical end 62, the guide rod 61 and the spherical end 62 are integrally connected, the wiring groove 63 is formed inside the spherical end 62 and the guide rod 61, the elastic engaging block 64 made of rubber material is disposed inside the wiring groove 63 inside the spherical end 62, the through groove 67 is formed inside the fixing body 1, and the cable 25 inside the unit module 5 is clamped by the elastic engaging block 64 in the wiring groove 63 and is inserted into the elastic engaging block 64 in the fixing body 1 to be engaged and fixed inside the engaging groove 24 inside the protection mechanism 2.
During operation, when buffer gear 4 cooperation supporting mechanism 3 fixes buffer unit module 5, unit module 5 must also produce slight displacement, in order to avoid the cable 25 of being connected with unit module 5 to appear with external device overstretching or friction, consequently hide cable 25 design in guide bar 61 and the inside wiring groove 63 of spherical end 62 and through elasticity block 64 block fixed, can enough guarantee that cable 25 can not excessively drag the displacement, also can reduce cable 25 and expose the oxidation, reduce the probability with external equipment friction damage.
As an embodiment of the present invention, the elastic compensation mechanism 6 further includes an elastic strip 65 and a connection groove 66, the through groove 67 is movably connected with the spherical end 62 in a circular structure in a manner of being matched with the spherical end 62, a plurality of connection grooves 66 are symmetrically formed on two sides of the outer surface of the spherical end 62, the elastic strip 65 is prevented from being inserted into the connection groove 66, the elastic strip 65 is distributed in an arc structure and is fixedly connected with the inner surface of the through groove 67, the radian of the elastic strip is gradually reduced from top to bottom, and the directions of the elastic strips 65 on the left side and the right side of the inner surface of the through groove 67 are oppositely designed.
In the working process, in the use process of the buffer mechanism 4 matched with the support mechanism 3, the unit module 5 must generate slight displacement, in order to reduce the stress pulling of the fixed strip 33 and reduce the probability of breakage of the fixed strip, therefore, the elastic compensation mechanism 6 is structurally added, in the process of buffering and damping, the displacement pulling of the unit module 5 can be synchronously transmitted to the spherical end 62 through the guide rod 61, the stress pulling of external equipment is further relieved by utilizing the elastic strip 65 and the connection groove 66 at the spherical end 62, the deviation process is guided, the wrong displacement is avoided, the left fixing plate 31 and the right fixing plate 31 are irregularly bent, the irreversible damage is caused, the structure can also be matched with the support mechanism 3 to effectively fix the unit module 5, and the balance of the running state is ensured.
The working principle is as follows:
by adding the supporting mechanism 3 to match with the buffering mechanism 4 in the device, when in use, when the external wind force is large to blow the main body of the unit module 5, the impact force generated by the main body of the wind force blowing unit module 5 is primarily buffered and fixed by the left fixing plate 32 and the right fixing plate 31 in the buffering mechanism 4, due to different wind directions, the left fixing plate 32 and the right fixing plate 31 are not only buffered and damped by self-deformation in the deformation process, meanwhile, when the two plates are bent and deformed, the elastic plate 41 in the buffering mechanism 4 on one side is compressed, the elastic plate 41 bends in a guiding manner under the action of the second sliding block 45 and the second sliding groove 46 and compresses the inner expansion air bag 42 to buffer and damp again, then the elastic plate 41 in the adjacent buffering space further uniformly disperses the buffering force to other buffering mechanisms 4 and the supporting mechanism 3 by pulling the elastic strip 65 again, thereby realizing the buffering and damping of the whole device, the device ensures the integral stability of the unit module 5 equipment in the operation process, simultaneously, the elastic plate 41, the expansion air bag 42, the baffle 411, the left fixing plate 32 and the right fixing plate 31 in the buffer mechanism 4 can conduct heat generated in the operation process of the unit module 5 as much as possible by matching the material of the upper half part of the fixing part with the material of the first slide block 34 and the material of the first slide groove 35, has good heat dissipation function, ensures that the temperature of the equipment can not rise rapidly and influences the normal operation of the equipment, has the structural aim of connecting and fixing the traditional plate type inverter main body in a modularized way, can complete the maintenance by only replacing the corresponding modules by maintenance personnel by adopting a detachable wire connection among the modules once a fault occurs, reduces the difficulty of inspection and maintenance, shortens the period, reduces the maintenance cost, and adopts the modularized design to improve the reliability and the stability of the unit, meanwhile, the supporting mechanism 3 and the buffering mechanism 4 are matched for use, so that the stability of the equipment in a severe strong wind environment can be effectively ensured, and heat dissipation and cooling are provided for the equipment; by adding the protection mechanism 2 in the device, when the buffer mechanism 4 is matched with the support mechanism 3 to be used, the inflatable airbag 42 in the buffer mechanism 4 is matched with the guiding elastic deformation of the elastic plate 41 under the deformation action of the left fixing plate 32 to compress the inflatable airbag 42 therein, so that the gas in the inflatable airbag 42 is compressed and is conveyed to the inflatable membrane 21 in the protection mechanism 2 through the air pipe 44, at the moment, the inflatable membrane 21 is inflated, so that a plurality of groups of cables 25 in the inflatable membrane 21 are tightened and fixed, meanwhile, the arc-shaped metal strip 22 with the fixed surface is deformed in the inflation process of the inflatable membrane 21, the clamping groove 24 is matched with the ball 23 to further limit the cable 25 and clamp and fix the cable, meanwhile, the design of the ball 23 avoids slight pulling displacement friction force in the tightening process of the cable 25 to damage the surface, and the friction resistance between the cable 25 and the arc-shaped metal strip 22 can be reduced through the rolling of the ball 23, further protect cable 25, the device structure aim at solves the great regional use of wind-force, and cable 25 suffers wind-force and blows and rock and the foreign object friction, and the winding phenomenon of knoing takes place between the adjacent cable 25, effectually protects cable 25, reduces the damage probability, guarantees the normal operating of equipment.
The using method comprises the following steps: when in use, a user primarily fixes the unit module 5 between the left fixing plate 32 and the right fixing plate 31 through the first sliding block 34 and the first sliding slot 35, then the fixing strip 33 is used for binding and fixing again to finish the preliminary connection and fixation of the value supporting mechanism 3 and the buffer mechanism 4, then, the user inserts the bottom ends of the left fixing plate 32 and the right fixing plate 31 into the fixing groove 36 through the guide block 314 and the guide groove 315 for preliminary fixing, at this time, the upper latch 312 and the lower latch 313 are engaged and fixed in a staggered manner, the user inserts the bolts into the mounting holes 311 to fix the unit module 5 and the supporting mechanism 3 to the fixing body 1 integrally, then the air tube 44 and the inflatable air bag 42 are connected with the interior of the inflatable membrane 21, the cable 25 is built into the protection mechanism 2 for clamping and fixing, then the sealing cover 11 is covered on the upper end of the fixed main body 1 in a sealing way, and the fixed main body 1 is integrally fixed on other fixed equipment or a bracket to complete the integral installation work of the equipment.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. The utility model provides an adopt optic fibre transmission's three-phase grid-connected inverter, includes fixed main part (1), its characterized in that: the outer surface of the front end of the fixed main body (1) is fixedly connected with a sealing cover (11) through screws, the fixed main body (1) is distributed in an annular structure, the fixed main body (1) is made of high-strength metal, a protection mechanism (2) is arranged in the fixed main body, four groups of supporting mechanisms (3) are distributed on the outer surface of the fixed main body (1) in an annular and equidistant mode, unit modules (5) are arranged in the supporting mechanisms (3), a buffer mechanism (4) is arranged between every two adjacent supporting mechanisms (3), an elastic compensation mechanism (6) is arranged between each unit module (5) and the fixed main body (1), when the elastic compensation mechanism (6) is used for supporting the unit modules (5) through the buffer mechanism (4), the elastic compensation module is synchronously used for stabilizing the supporting mechanism (3) to support the stability of the unit modules (5) in the elastic buffer process of responding to external impact force through the buffer mechanism (4), meanwhile, the elastic deformation of the part of the buffer mechanism (4) and the support mechanism (3) in the matching state is further compensated;
protection machanism (2) are including inflation membrane (21), arc metal strip (22), ball (23), block groove (24), cable (25), inflation membrane (21) are the fixed main part (1) inside that the annular structure distributes that the annular structure is glued to annular structure, and inflation state is in under inflation film (21) silence state, inflation membrane (21) transverse section becomes U type structure and distributes, and inflation membrane (21) internal surface glued a plurality of arc metal strip (22), a plurality of arc metal strip (22) annular equidistance distributes, and arc metal strip (22) are inside to form block groove (24), and the inside equidistance of block groove (24) sets up ball (23), ball (23) are located arc metal strip (22) internal surface and embedded connection is fixed, the inside in block groove (24) sets up cable (25), cable (25) laminate arc metal strip (22) internal surface formed block groove (24) surface and with cable (25) surface The balls (23) are movably connected;
the supporting mechanism (3) comprises a right fixing plate (31), a left fixing plate (32), fixing strips (33), a first sliding block (34), a first sliding groove (35) and a fixing groove (36), wherein the left fixing plate (32) and the right fixing plate (31) are symmetrically distributed on the outer surface of the fixing main body (1), the unit module (5) is located between the left fixing plate and the right fixing plate, the left fixing plate (32) and the right fixing plate (31) are the same in structural size, the adjacent surfaces of the left fixing plate (32) and the right fixing plate (31) attached to the unit module (5) are fixedly connected with the first sliding block (34), the left side and the right side of the unit module (5) are respectively provided with the first sliding groove (35), the first sliding block (34) is located in the first sliding groove (35) and connected in a sliding clamping manner, the fixing strips (33) are symmetrically distributed on the front and back of the outer surface of the, the fixing strips (33) are distributed in a U-shaped structure, two ends of each fixing strip are fixedly connected with the upper ends of the left fixing plate (32) and the right fixing plate (31) respectively, the left fixing plate (32) is distributed in an arc-shaped structure, the upper half part of each fixing strip is a fixing part, the lower half part of each fixing strip is a toughness deformation part, fixing grooves (36) are formed in the annular side surface of the fixing main body (1) close to the lower end regions of the left fixing plate (32) and the right fixing plate (31), and the lower ends of the left fixing plate (32) and the right fixing plate (31) are located inside;
the buffer mechanism (4) comprises an elastic plate (41), an expansion air bag (42), a buffer strip (43) and an air pipe (44), the elastic plate (41) is distributed in an annular curling shape, one end of the left fixing plate is fixedly connected with the outer surface fixing part of the left fixing plate (32), the other end is a free movable end, the inner part of the elastic plate (41) is glued with an expansion air bag (42), the expansion air bag (42) is distributed in a cylindrical structure, the front end of the air pipe (44) is fixedly connected with an air pipe, the other end of the air pipe (44) penetrates through the fixing main body (1) and extends into the internal protection mechanism (2) to be fixedly connected with the inside of the expansion film (21), the outer surfaces of a left fixing plate (32) and a right fixing plate (31) in the adjacent supporting mechanism (3) on the annular side surface of the fixing main body (1) are both provided with a buffer mechanism (4), elastic plates (41) in the corresponding position buffer mechanisms (4) are fixedly connected through buffer strips (43);
the first sliding groove (35) is formed by punching a heat-conducting copper metal material and is connected to two sides of the unit module (5) in an embedded mode, the elastic plate (41) in the buffering mechanism (4), a fixing portion of the left fixing plate (32) and the right fixing plate (31) in the supporting mechanism (3), and the first sliding block (34) are all made of heat-conducting copper, and the first sliding groove and the second sliding block are matched with an expansion air bag (42) in the buffering mechanism (4) to form a heat dissipation mechanism.
2. The three-phase grid-connected inverter adopting optical fiber transmission according to claim 1, wherein: the utility model discloses a clamping block, including left side fixed plate (32), lower extreme one side longitudinal symmetry fixed mounting of left side fixed plate (32) has guide block (314), and the inside of fixed slot (36) corresponds the position with guide block (314) and has seted up guide way (315), guide block (314) are pegged graft and are fixed in the inside of guide way (315), fixture block (312) are gone up to the lower extreme surface equidistance fixedly connected with a plurality of left side fixed plate (32) and right fixed plate (31), and fixed slot (36) internal surface and last fixture block (312) correspond position fixedly connected with down fixture block (313), it is the design of right trapezoid cross section and crisscross grafting fixed each other to go up fixture block (312) and lower fixture block (313), mounting hole (311) have been seted up to the position that left side fixed plate (32) lower extreme external surface and fixed slot.
3. The three-phase grid-connected inverter adopting optical fiber transmission according to claim 1, wherein: the surface of left side fixed plate (32) is close to position fixedly connected with baffle (411) at elastic plate (41) front and back both ends, baffle (411) are circular structure and distribute, and its diameter is greater than opening diameter around elastic plate (41) under the crimping state, baffle (411) are the hollow out construction design, the surface of left side fixed plate (32) is close to elastic plate (41) free activity end position and has seted up spout two (46), and elastic plate (41) free activity end fixedly connected with slider two (45), slider two (45) set up inside spout two (46), and its both are T type structural design and match each other and sliding connection.
4. The three-phase grid-connected inverter adopting optical fiber transmission according to claim 1, wherein: the inside of inflation gasbag (42) is provided with water film (423), water film (423) also are the inside central point that the cylindricality structure distributes in inflation gasbag (42) and puts, and both ends and the seamless cementing of inflation gasbag (42) are fixed around it, form water cavity (422) between inflation gasbag (42) and water film (423), the inside formation air chamber (421) of cylindricality structure water film (423), the one end and the air chamber (421) of trachea (44) are connected, the surface upper end of inflation gasbag (42) is provided with water injection valve (424), and the upper end of water injection valve (424) runs through the surface that extends to elastic plate (41).
5. The three-phase grid-connected inverter adopting optical fiber transmission according to claim 1, wherein: the elastic compensation mechanism (6) comprises a guide rod (61), a spherical end (62), a wiring groove (63), an elastic clamping block (64) and a through groove (67), the upper end of the guide rod (61) is fixedly connected with the central position of the lower end of the unit module (5), the lower end of the guide rod is fixedly connected with a spherical end (62), the guide rod (61) and the spherical end (62) are connected in an integrated manner, a wiring groove (63) is arranged inside the spherical end (62) and the guide rod (61), a rubber elastic clamping block (64) is arranged inside the wiring groove (63) positioned inside the spherical end (62), a through groove (67) is formed in the fixing main body (1), and the cable (25) in the unit module (5) is clamped by the elastic clamping block (64) in the wiring groove (63) and extends to the inside of the fixing main body (1) in a penetrating mode to be clamped and fixed in the clamping groove (24) in the protection mechanism (2).
6. The three-phase grid-connected inverter adopting optical fiber transmission according to claim 5, wherein: elasticity compensation mechanism (6) still include elasticity strip (65) and link up groove (66), the position that logical groove (67) is close to spherical end (62) is circular structure and spherical end (62) and matches swing joint each other, and the surface bilateral symmetry of spherical end (62) has seted up a plurality of and has linked up groove (66), it has elasticity strip (65) to avoid pegging graft in groove (66), elasticity strip (65) are arc structural distribution and lead to groove (67) internal surface fixed connection, and its radian from last down degressive step by step, it designs in opposite directions to lead to groove (67) internal surface left and right sides elasticity strip (65) direction.
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| CN203261246U (en) * | 2013-03-26 | 2013-10-30 | 湖北特雷斯科技有限公司 | Three-phase grid-connected inverter |
| CN207039467U (en) * | 2017-08-14 | 2018-02-23 | 山东源创智能科技有限公司 | A kind of inverter protection device of micro-capacitance sensor |
| CN110729877A (en) * | 2019-10-30 | 2020-01-24 | 徐州恒诚自动化科技有限公司 | Pressure-resistant and impact-resistant frequency converter |
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| JP2012028402A (en) * | 2010-07-20 | 2012-02-09 | Denso Corp | Power unit |
| CN202931217U (en) * | 2012-11-30 | 2013-05-08 | 湖北特雷斯科技有限公司 | Three-phase grid-connected inverter employing optical fiber transformation |
| CN203261246U (en) * | 2013-03-26 | 2013-10-30 | 湖北特雷斯科技有限公司 | Three-phase grid-connected inverter |
| CN207039467U (en) * | 2017-08-14 | 2018-02-23 | 山东源创智能科技有限公司 | A kind of inverter protection device of micro-capacitance sensor |
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