CN112994477B - Frequency converter safety protection device and protection method thereof - Google Patents
Frequency converter safety protection device and protection method thereof Download PDFInfo
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- CN112994477B CN112994477B CN202110370257.6A CN202110370257A CN112994477B CN 112994477 B CN112994477 B CN 112994477B CN 202110370257 A CN202110370257 A CN 202110370257A CN 112994477 B CN112994477 B CN 112994477B
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000000428 dust Substances 0.000 claims abstract description 102
- 238000007790 scraping Methods 0.000 claims abstract description 47
- 238000006243 chemical reaction Methods 0.000 claims abstract description 42
- 238000009423 ventilation Methods 0.000 claims abstract description 32
- 238000007789 sealing Methods 0.000 claims description 9
- 230000005484 gravity Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 12
- 238000004140 cleaning Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
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Classifications
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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
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/68—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements
- B01D46/681—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements by scrapers, brushes or the like
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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
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0213—Venting apertures; Constructional details thereof
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a safety protection device and a protection method for a frequency converter, and belongs to the field of frequency converters. The utility model provides a converter safety device, is including the built-in frequency conversion device that has radiator fan, be equipped with vent, lower vent on the frequency conversion device, its characterized in that still includes: the sliding frame is connected to the upper ventilation opening in a sliding mode, and a lower dustproof net matched with the upper ventilation opening is fixedly connected to the sliding frame; one end of the dustproof spring is fixedly connected to the sliding frame, and the other end of the dustproof spring is attached to the sliding frame; two groups of limiting components are arranged up and down and used for limiting the up-and-down sliding of the sliding frame; the scraping frame is connected to the frequency conversion device in a sliding mode; according to the invention, the upper dust screen and the lower dust screen are arranged, so that gas dust entering the frequency conversion device can be filtered, the dust on the lower dust screen can be cleaned, the cleaning operation can be repeatedly realized, the replacement frequency of the lower dust screen is low, and the dust removal effect is good.
Description
Technical Field
The invention relates to the technical field of frequency converters, in particular to a safety protection device and a protection method for a frequency converter.
Background
The frequency converter is an electric control device which applies a frequency conversion technology and a microelectronic technology and controls an alternating current motor by changing the frequency mode of a working power supply of the motor;
the frequency converter mainly comprises a rectifying unit, a filtering unit, an inverting unit, a braking unit, a driving unit, a detecting unit and a microprocessing unit, the frequency converter adjusts the voltage and the frequency of an output power supply by switching on and off of an internal IGBT (insulated gate bipolar transistor), provides the required power supply voltage according to the actual requirement of the motor, and further achieves the purposes of energy saving and speed regulation;
need maintain it when the converter uses, including removing dust to the upper and lower vent of converter, because the converter can produce the heat in the use, lead to the dust to concentrate on upper and lower vent, if not in time clear up, can influence the use of converter.
Disclosure of Invention
The invention aims to solve the problems that when a frequency converter is used, maintenance is required, the frequency converter comprises an upper vent and a lower vent for removing dust, and the frequency converter generates heat in the using process, so that dust is concentrated on the upper vent and the lower vent, and the use of the frequency converter is influenced if the frequency converter is not cleaned in time.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a converter safety device, is including the built-in frequency conversion device that has radiator fan, be equipped with vent, lower vent on the frequency conversion device, its characterized in that still includes: the sliding frame is connected to the upper ventilation opening in a sliding mode, and a lower dustproof net matched with the upper ventilation opening is fixedly connected to the sliding frame; one end of the dustproof spring is fixedly connected to the sliding frame, and the other end of the dustproof spring is attached to the sliding frame; two groups of limiting components are arranged up and down and used for limiting the up-and-down sliding of the sliding frame; the scraping frame is connected to the frequency conversion device in a sliding mode and used for scraping dust on the lower dustproof net; the lower dust screen is subjected to weight increase after dust, the limiting component on the upper side is opened to enable the lower dust screen to move downwards, the dust-proof spring is compressed, the lower dust screen is scraped by the scraping frame at the moment, the limiting component on the lower side is opened by the scraping frame, and the lower dust screen is enabled to reset under the effect of the dust-proof spring.
In order to facilitate the specific use of the limiting mechanism, preferably, the limiting member comprises: the upper limiting block and the lower limiting block slide on the frequency conversion device, a limiting groove is formed in a side plate of the sliding frame, and the limiting groove is matched with the upper limiting block and the lower limiting block; the upper limiting block and the lower limiting block are both fixedly connected with limiting springs, and the other ends of the limiting springs are fixedly connected to the frequency conversion device; and the driven block is fixedly connected to the lower limiting block and is matched with the scraping frame.
For the convenience of moving back drive limit slide down at the carriage, it is preferred, sliding connection has limit slide on the frequency conversion device, fixedly connected with connects the rope on the limit slide, connect the one end fixedly connected with drive block that the limit slide was kept away from to the rope, drive block and carriage phase-match, be equipped with on the scraping frame with limit slide assorted spacing spout.
In order to facilitate driving of the piston shaft, preferably, the variable frequency device further comprises a piston groove arranged on the variable frequency device, the piston groove is connected with the piston shaft in a sliding manner, the piston shaft is fixedly connected with the scraping frame, the lower vent is connected with a ventilation pipe, the piston groove is connected to the ventilation pipe in an inserting manner, a flow dividing component is arranged in the ventilation pipe to enable gas in the ventilation pipe to enter the piston groove, a piston spring is sleeved on the piston shaft, and two ends of the piston spring are fixedly connected to the variable frequency device and the piston shaft respectively.
In order to facilitate the use of the flow dividing member, preferably, the flow dividing member includes a rotary sealing plate disposed at a joint of the ventilation pipe and the piston groove, the rotary sealing plate is fixedly connected with a U-shaped elastic sheet, and the other end of the U-shaped elastic sheet is fixedly connected to the frequency conversion device.
In order to facilitate the discharge of the gas in the piston groove, preferably, one end of the piston groove close to the scraping frame is communicated with a connecting groove, and one end of the connecting groove far away from the piston groove is connected to the vent pipe.
In order to promote the scraping effect of the scraping frame, preferably, the interval type rack is fixedly connected to the frequency conversion device, the rotating brush and the rotating gear which are fixedly connected are rotatably connected to the scraping frame, the rotating gear is meshed with the interval type rack gear, the elastic ropes are fixedly connected to the two sides of the rotating brush, and one end of each elastic rope, far away from the rotating brush, is fixedly connected to the scraping frame.
In order to discharge the scraped dust, preferably, the frequency conversion device is provided with a dust falling port, and the dust falling port is matched with the rotary brush.
In order to prevent the upper vent from not being filtered when the lower dust screen moves downwards, an upper scraper is fixedly connected to the frequency converter, an upper dust screen matched with the upper vent is fixedly connected to the sliding frame, and the upper scraper is matched with the upper dust screen.
A safety protection method for a frequency converter mainly comprises the following steps:
s1, driving the gas in the frequency conversion device to flow through a heat dissipation fan in the frequency conversion device, so that the gas enters from the upper vent and is discharged through the lower vent and the ventilation pipe;
s2, when the gas passes through the ventilation pipe, the gas is firstly led into the piston groove under the action of the flow dividing component, so that the gas in the piston groove is increased in pressure and then flows out of the ventilation pipe;
s3, when the gas passes through the lower dust screen, dust is adsorbed on the lower dust screen, so that the lower dust screen moves downwards after the lower dust screen is subjected to the action of gravity and moves up the limiting block, the limiting spring is extruded, and meanwhile, the scraping frame is not limited by the limiting slide block;
s4, under the action of the gas in the piston groove in the step S2, the scraping frame slides to clean ash on the lower dust screen;
meanwhile, the spaced racks and the rotating gear enable the rotating brush to rotate in a reciprocating manner when rotating, so that the lower dust screen is cleaned;
s5, when the scraping frame slides to the maximum distance, the driven block slides to reset without blocking the sliding frame, the sliding frame moves upwards under the dustproof spring, and the lower dustproof net moves upwards to reset and block the upper ventilation opening;
when the scraping frame slides to the maximum distance, the gas in the piston groove is released through the connecting groove, so that the piston shaft is convenient to reset.
Compared with the prior art, the invention provides a frequency converter safety protection device and a protection method thereof, and the frequency converter safety protection device has the following beneficial effects:
1. according to the frequency converter safety protection device and the protection method thereof, when the lower dustproof net moves downwards, the upper dustproof net is matched with the upper vent, the standby dust removal effect is started, the dust on the upper dustproof net is less, and the upper dustproof net is easy to scrape by the dust on the upper scraper when moving upwards;
2. when the sliding frame moves downwards, the sliding frame can extrude the driving block to move downwards, so that the driving block pulls the connecting rope and the limiting sliding block to slide, the limiting sliding block is not clamped in the limiting sliding groove, and the scraping frame can slide conveniently;
3. according to the frequency converter safety protection device and the protection method thereof, when the scraping frame slides, the spaced rack and the rotating gear can slide relatively, so that the rotating gear rotates under the action of the gear, the rack is arranged in a spaced mode, the rotating gear rotates intermittently, and meanwhile, the rotating brush can rotate in a reciprocating mode when rotating and sliding by matching with the arranged elastic rope, so that the dust removing effect on the lower dust screen is good;
the device has the advantages that the parts which are not involved are the same as or can be realized by adopting the prior art, the gas dust entering the frequency conversion device can be filtered by the upper dust screen and the lower dust screen, the dust on the lower dust screen can be cleaned, the cleaning operation can be realized in a reciprocating way, the replacement frequency of the lower dust screen is low, and the dust removal effect is good.
Drawings
Fig. 1 is a schematic structural diagram of a frequency converter safety protection device and a protection method thereof according to the present invention;
fig. 2 is a schematic cross-sectional structural diagram of a frequency converter safety protection device and a protection method thereof according to the present invention;
fig. 3 is a second schematic cross-sectional structural diagram of a frequency converter safety protection device and a protection method thereof according to the present invention;
fig. 4 is a schematic structural diagram of a sliding frame of a transducer safety protection device and a protection method thereof according to the present invention;
fig. 5 is a third schematic cross-sectional structural diagram of a frequency converter safety protection device and a protection method thereof according to the present invention;
fig. 6 is a schematic structural diagram of a shunt member of a safety protection device and a protection method for a frequency converter according to the present invention;
FIG. 7 is a schematic structural diagram of a spaced rack of a frequency converter safety protection device and a protection method thereof according to the present invention;
fig. 8 is a second schematic structural diagram of a frequency converter safety protection device and a protection method thereof according to the present invention.
In the figure: 1. a frequency conversion device; 101. a lower vent; 102. an upper vent; 103. a dust falling port; 104. a vent pipe; 105. rotating the sealing plate; 106. a U-shaped elastic sheet; 2. a carriage; 201. a lower dust screen; 202. mounting a dust screen; 203. an upper scraper plate; 204. a dust-proof spring; 205. a lower limiting block; 206. an upper limit block; 207. a limiting spring; 208. a driven block; 3. a piston shaft; 3001. a piston groove; 3002. connecting grooves; 301. a piston spring; 302. a scraping frame; 303. a spaced rack; 304. a rotating gear; 305. rotating the brush; 306. a limiting slide block; 307. connecting ropes; 308. the block is driven.
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.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example 1:
referring to fig. 1-8, a converter safety device, including built-in frequency conversion device 1 that has radiator fan, when radiator fan work dispels the heat, can drive the gas flow in the frequency conversion device 1, be equipped with vent 102, lower vent 101 on the frequency conversion device 1, specifically, the vent 102 is used for gaseous entering on, and lower vent 101 is used for gaseous emission, still includes:
the sliding frame 2 is connected to the upper ventilation opening 102 in a sliding mode, a lower dust screen 201 matched with the upper ventilation opening 102 is fixedly connected to the sliding frame 2, and the lower dust screen 201 can filter dust in gas on the upper ventilation opening 102;
one end of the dustproof spring 204 is fixedly connected to the sliding frame 2, and the other end of the dustproof spring 204 is attached to the sliding frame 2, namely the sliding frame 2 is not attached to the dustproof spring 204, so that the dustproof spring 204 can be separated from the sliding frame 2 when the sliding frame 2 moves upwards, and the dustproof spring can continuously move upwards to reset under inertia;
the upper and lower limiting members are provided with two groups and used for limiting the up-and-down sliding of the sliding frame 2, specifically, the limiting members are an upper limiting block 206 and a lower limiting block 205 which slide on the frequency conversion device 1, a side plate of the sliding frame 2 is provided with a limiting groove, and the limiting groove is matched with the upper limiting block 206 and the lower limiting block 205; wherein, the upper limit block 206 and the lower limit block 205 are both fixedly connected with a limit spring 207, and the other end of the limit spring 207 is fixedly connected to the frequency conversion device 1; the driven block 208 is fixedly connected to the lower limiting block 205 and matched with the scraping frame 302;
it should be understood that wedge surfaces are arranged on the upper limit block 206 and the lower limit block 205, so that the sliding frame 2 can drive the upper limit block 206 and the lower limit block 205 conveniently;
the scraping frame 302 is connected to the frequency conversion device 1 in a sliding manner and is used for scraping dust on the lower dust screen 201; wherein, weight increases after dust screen 201 receives the dust down, opens the stop component of upside and makes lower dust screen 201 move down, and dust spring 204 compresses, scrapes frame 302 and scrapes dust screen 201 down this moment, and scrapes frame 302 and open the stop component of downside for dust screen 201 resets under dust spring 204's effect down.
Sliding connection has limiting slide block 306 on frequency conversion device 1, rope 307 is connected to fixedly connected with on limiting slide block 306, connect the one end fixedly connected with drive block 308 that rope 307 kept away from limiting slide block 306, drive block 308 and 2 phase-matchs of carriage, be equipped with on the cursory frame 302 with limiting slide block 306 assorted spacing spout, when carriage 2 moves down, carriage 2 can extrude drive block 308 and move down, make drive block 308 pulling connect rope 307, limiting slide block 306 slides, make limiting slide block 306 not joint in spacing spout, and then be convenient for the slip of cursory frame 302, it is connected to be convenient for limiting slide block 306, the reset of cursory frame 302, fixedly connected with is used for the spring that resets on limiting slide block 306, and the one end that limiting slide block 306 is close to driven block 208 is the scarf setting.
The variable frequency device further comprises a piston groove 3001 arranged on the variable frequency device 1, a piston shaft 3 is connected in the piston groove 3001 in a sliding manner, the piston shaft 3 is fixedly connected with the scraping frame 302, a vent pipe 104 is connected to the lower vent 101, the piston groove 3001 is connected to the vent pipe 104 in a plugging manner, a one-way valve is further arranged in the piston groove 3001 to prevent gas from escaping from the piston groove 3001, a flow dividing member is arranged in the vent pipe 104 to enable gas in the vent pipe 104 to enter the piston groove 3001, specifically, the flow dividing member comprises a rotary sealing plate 105 arranged at the joint of the vent pipe 104 and the piston groove 3001, a U-shaped elastic sheet 106 is fixedly connected to the rotary sealing plate 105, the other end of the U-shaped elastic sheet 106 is fixedly connected to the variable frequency device 1, a piston spring 301 is sleeved on the piston shaft 3, and two ends of the piston spring 301 are respectively and fixedly connected to the variable frequency device 1 and the piston shaft 3;
when gas is exhausted from the lower vent hole 101, the gas in the lower vent hole 101 enters the piston groove 3001 through the vent pipe 104, and when the gas pressure in the piston groove 3001 reaches the maximum value, the gas cannot enter the piston groove 3001, so that the gas extrudes the rotary sealing plate 105 to rotate, the U-shaped elastic sheet 106 is compressed, and the vent pipe 104 is communicated, so that the gas can flow out conveniently;
when the scraping frame 302 is not limited by the limiting slide block 306, the piston shaft 3 slides under the action of gas pressure, the piston shaft 3 extrudes the scraping frame 302 to slide, and then the scraping frame 302 scrapes the lower dustproof net 201.
One end of the piston groove 3001 close to the scraping frame 302 is communicated with a connecting groove 3002, one end of the connecting groove 3002 far away from the piston groove 3001 is connected to the vent pipe 104, and when the piston groove 3001 slides to the maximum distance, the gas with pressure can be discharged from the connecting groove 3002, so that the piston shaft 3 can be conveniently reset.
Fixedly connected with interval formula rack 303 on frequency conversion device 1 rotates on the frame 302 and is connected with fixed rotation brush 305, the rotating gear 304 that link to each other, and rotating gear 304 meshes with interval formula rack 303 gear mutually, rotates the both sides fixedly connected with elasticity rope of brush 305, and the one end fixed connection that rotation brush 305 was kept away from to the elasticity rope is on scraping frame 302.
When the scraping frame 302 slides, the spaced rack 303 and the rotating gear 304 can slide relatively, so that the rotating gear 304 rotates under the action of the gear, and the racks are arranged in a spaced manner, so that the rotating gear 304 intermittently rotates, and meanwhile, the rotating brush 305 can rotate in a reciprocating manner when rotating and sliding by matching with the arranged elastic rope, so that the dust cleaning effect on the lower dust screen 201 is good;
the frequency conversion device 1 is provided with a dust falling port 103, and the dust falling port 103 is matched with the rotating brush 305, so that dust can fall conveniently.
The upper scraper 203 is fixedly connected to the frequency conversion device 1, the upper dustproof net 202 matched with the upper vent 102 is fixedly connected to the sliding frame 2, the upper scraper 203 is matched with the upper dustproof net 202, when the lower dustproof net 201 moves downwards, the upper dustproof net 202 is matched with the upper vent 102, the standby dust removal effect is started, dust on the upper dustproof net 202 is less, and when the upper dustproof net 202 moves upwards, the dust on the upper scraper 203 is easily scraped.
According to the invention, the upper dust screen 202 and the lower dust screen 201 are arranged, so that gas dust entering the frequency conversion device 1 can be filtered, the dust on the lower dust screen 201 can be cleaned, the cleaning operation can be realized in a reciprocating manner, the replacement frequency of the lower dust screen 201 is low, and the dust removal effect is good.
Example 2:
referring to fig. 1 to 8, a safety protection method for a frequency converter mainly includes the following steps:
s1, driving the air in the frequency conversion device 1 to flow through a cooling fan in the frequency conversion device 1, so that the air enters from the upper vent 102 and is discharged through the lower vent 101 and the vent pipe 104;
s2, when the gas passes through the ventilation pipe 104, the gas is acted by the flow dividing member, so that the gas firstly enters the piston slot 3001, and the gas in the piston slot 3001 is increased in pressure and then flows out from the ventilation pipe 104: when gas is exhausted from the lower vent hole 101, the gas in the lower vent hole 101 enters the piston groove 3001 through the vent pipe 104, and when the gas pressure in the piston groove 3001 reaches the maximum value, the gas cannot enter the piston groove 3001, so that the gas extrudes the rotary sealing plate 105 to rotate, the U-shaped elastic sheet 106 is compressed, and the vent pipe 104 is communicated, so that the gas can flow out conveniently;
s3, when the gas passes through the lower dustproof net 201, dust is adsorbed on the lower dustproof net 201, so that the lower dustproof net 201 moves downwards after the limiting block 206 is limited by gravity, the limiting spring 207 is extruded, meanwhile, the scraping frame 302 is not limited by the limiting slide block 306, the sliding frame 2 moves downwards, the lower dustproof net 201 falls, and the dustproof spring 204 is compressed;
s4, under the action of the gas in the piston groove 3001 in the step S2, the scraping frame 302 slides to perform ash removal on the lower dust screen 201;
the interval type rack 303 and the rotating gear 304 which are arranged simultaneously enable the rotating brush 305 to rotate in a reciprocating manner when rotating, and dust removal is carried out on the lower dust screen 201: when the scraping frame 302 slides, the spaced rack 303 and the rotating gear 304 can slide relatively, so that the rotating gear 304 rotates under the action of the gear, and the racks are arranged in a spaced manner, so that the rotating gear 304 intermittently rotates, and meanwhile, the rotating brush 305 can rotate in a reciprocating manner when rotating and sliding by matching with the arranged elastic rope, so that the dust cleaning effect on the lower dust screen 201 is good;
s5, when the scraper 302 slides to the maximum distance, the driven block 208 slides to reset, the sliding frame 2 is not blocked, the sliding frame 2 moves upwards under the dustproof spring 204, the lower dustproof net 201 moves upwards to reset the upper vent 102;
when the wiper holder 302 slides to the maximum distance, the gas in the piston groove 3001 is released through the connecting groove 3002, facilitating the restoration of the piston shaft 3.
According to the invention, the upper dust screen 202 and the lower dust screen 201 are arranged, so that gas dust entering the frequency conversion device 1 can be filtered, the dust on the lower dust screen 201 can be cleaned, the cleaning operation can be realized in a reciprocating manner, the replacement frequency of the lower dust screen 201 is low, and the dust removal effect is good.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The utility model provides a converter safety device, is including built-in frequency conversion device (1) that has radiator fan, be equipped with vent (102), lower vent (101) on frequency conversion device (1), its characterized in that still includes:
the sliding frame (2) is connected to the upper ventilation opening (102) in a sliding mode, and a lower dust screen (201) matched with the upper ventilation opening (102) is fixedly connected to the sliding frame (2);
one end of the dustproof spring (204) is fixedly connected to the sliding frame (2), and the other end of the dustproof spring is attached to the sliding frame (2);
two groups of limiting components are arranged up and down and used for limiting the up-and-down sliding of the sliding frame (2);
the scraping frame (302) is connected to the frequency conversion device (1) in a sliding mode and is used for scraping dust on the lower dustproof net (201);
wherein,
when the weight of the lower dust screen (201) is increased after dust is received, the limiting component on the upper side is opened to enable the lower dust screen (201) to move downwards, the dust-proof spring (204) is compressed, the scraping frame (302) scrapes the lower dust screen (201), and the scraping frame (302) opens the limiting component on the lower side, so that the lower dust screen (201) is reset under the action of the dust-proof spring (204);
the stop member includes:
the upper limiting block (206) and the lower limiting block (205) slide on the frequency conversion device (1), a limiting groove is formed in a side plate of the sliding frame (2), and the limiting groove is matched with the upper limiting block (206) and the lower limiting block (205);
the upper limiting block (206) and the lower limiting block (205) are both fixedly connected with a limiting spring (207), and the other end of the limiting spring (207) is fixedly connected to the frequency conversion device (1);
the driven block (208) is fixedly connected to the lower limiting block (205) and matched with the scraping frame (302);
sliding connection has stop block (306) on frequency conversion device (1), fixedly connected with connects rope (307) on stop block (306), connect one end fixedly connected with drive block (308) that stop block (306) were kept away from in rope (307), drive block (308) and carriage (2) phase-match, be equipped with on scraping frame (302) with stop block (306) assorted spacing spout.
2. The frequency converter safety device according to claim 1, further comprising a piston groove (3001) arranged on the frequency converter (1), wherein a piston shaft (3) is slidably connected in the piston groove (3001), the piston shaft (3) is fixedly connected with the scraping frame (302), the lower ventilation opening (101) is connected with a ventilation pipe (104), the piston groove (3001) is connected with the ventilation pipe (104) in an inserting manner, a shunting member is arranged in the ventilation pipe (104) to enable gas in the ventilation pipe (104) to enter the piston groove (3001), a piston spring (301) is sleeved on the piston shaft (3), and two ends of the piston spring (301) are respectively and fixedly connected to the frequency converter (1) and the piston shaft (3).
3. The frequency converter safety protection device according to claim 2, wherein the shunt member comprises a rotary sealing plate (105) arranged at the joint of the ventilation pipe (104) and the piston groove (3001), a U-shaped spring (106) is fixedly connected to the rotary sealing plate (105), and the other end of the U-shaped spring (106) is fixedly connected to the frequency converter (1).
4. The frequency converter safety device according to claim 3, wherein an end of the piston groove (3001) close to the scraping frame (302) is communicated with a connecting groove (3002), and an end of the connecting groove (3002) far away from the piston groove (3001) is connected to the ventilation pipe (104).
5. The frequency converter safety protection device according to claim 2, characterized in that a spacing rack (303) is fixedly connected to the frequency conversion device (1), a rotating brush (305) and a rotating gear (304) are fixedly connected to the scraping frame (302) in a rotating manner, the rotating gear (304) is meshed with the gear of the spacing rack (303), elastic ropes are fixedly connected to two sides of the rotating brush (305), and one ends of the elastic ropes, far away from the rotating brush (305), are fixedly connected to the scraping frame (302).
6. A transducer safety guard according to claim 5, characterized in that the transducer device (1) is provided with a dust drop (103), and the dust drop (103) is adapted to the rotating brush (305).
7. The frequency converter safety protection device according to claim 1, characterized in that an upper scraper (203) is fixedly connected to the frequency conversion device (1), an upper dust screen (202) matched with the upper ventilation opening (102) is fixedly connected to the sliding frame (2), and the upper scraper (203) is matched with the upper dust screen (202).
8. A frequency converter safety protection method comprising the frequency converter safety protection device of any one of claims 2 to 7, characterized by mainly comprising the following steps:
s1, driving the air in the frequency conversion device (1) to flow through a cooling fan in the frequency conversion device (1), so that the air enters from the upper vent (102) and is discharged through the lower vent (101) and the ventilation pipe (104);
s2, when the gas passes through the ventilation pipe (104), the gas is acted by the flow dividing component, so that the gas firstly enters the piston groove (3001), and the gas in the piston groove (3001) flows out of the ventilation pipe (104) after the gas pressure is increased;
s3, when the gas passes through the lower dust screen (201), dust is adsorbed on the lower dust screen (201), so that the lower dust screen (201) moves downwards after the limiting block (206) is acted by gravity, the limiting spring (207) is extruded, and meanwhile, the scraping frame (302) is not limited by the limiting slide block (306);
s4, under the action of the gas in the piston groove (3001) in the step S2, the scraping frame (302) slides to perform ash removal on the lower dust screen (201);
meanwhile, the rotating brush (305) rotates in a reciprocating manner by the aid of the spaced racks (303) and the rotating gear (304) so as to clean ash of the lower dust screen (201);
s5, when the scraping frame (302) slides to the maximum distance, the driven block (208) slides to reset without clamping the sliding frame (2), the sliding frame (2) moves upwards under the dustproof spring (204), and the lower dustproof net (201) moves upwards to reset and block the upper ventilation opening (102);
when the scraping frame (302) slides to the maximum distance, gas in the piston groove (3001) is released through the connecting groove (3002), and the piston shaft (3) is convenient to reset.
Priority Applications (1)
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| CN108854399A (en) * | 2018-07-25 | 2018-11-23 | 徐州好百年家具有限公司 | A kind of deduster for avoiding dust from inversely spreading |
| CN209787026U (en) * | 2019-03-28 | 2019-12-13 | 南京奥博电气有限公司 | Special undisturbed two-path switching type frequency converter for elevator |
| CN211930473U (en) * | 2020-05-20 | 2020-11-13 | 徐州丹佛尼电气科技有限公司 | Mining frequency converter mounting shell |
| CN112492854A (en) * | 2020-12-09 | 2021-03-12 | 西安海云物联科技有限公司 | 5G communication equipment with dual-protection structure |
| CN112582912A (en) * | 2020-12-01 | 2021-03-30 | 周宇 | Heat radiation structure of outdoor transformer case of 5G communication base station |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212724937U (en) * | 2020-09-09 | 2021-03-16 | 苏州晟捷特机电设备有限公司 | Novel high-impedance isolation transformer |
| CN112333942A (en) * | 2020-10-27 | 2021-02-05 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Novel cabinet resistant to wind and sand |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108854399A (en) * | 2018-07-25 | 2018-11-23 | 徐州好百年家具有限公司 | A kind of deduster for avoiding dust from inversely spreading |
| CN209787026U (en) * | 2019-03-28 | 2019-12-13 | 南京奥博电气有限公司 | Special undisturbed two-path switching type frequency converter for elevator |
| CN211930473U (en) * | 2020-05-20 | 2020-11-13 | 徐州丹佛尼电气科技有限公司 | Mining frequency converter mounting shell |
| CN112582912A (en) * | 2020-12-01 | 2021-03-30 | 周宇 | Heat radiation structure of outdoor transformer case of 5G communication base station |
| CN112492854A (en) * | 2020-12-09 | 2021-03-12 | 西安海云物联科技有限公司 | 5G communication equipment with dual-protection structure |
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