CN101976936A - Explosion-proof and intrinsic safety type high-voltage variable-frequency governor - Google Patents
Explosion-proof and intrinsic safety type high-voltage variable-frequency governor Download PDFInfo
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- CN101976936A CN101976936A CN 201010518149 CN201010518149A CN101976936A CN 101976936 A CN101976936 A CN 101976936A CN 201010518149 CN201010518149 CN 201010518149 CN 201010518149 A CN201010518149 A CN 201010518149A CN 101976936 A CN101976936 A CN 101976936A
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Abstract
The invention discloses an explosion-proof and intrinsic safety type high-voltage variable-frequency governor which is characterized by comprising an explosion-proof and intrinsic safety type high-voltage variable frequency rectifier box, an explosion-proof high-voltage variable frequency inversion box and an explosion-proof and intrinsic safety type high-voltage variable frequency cooler, wherein the explosion-proof and intrinsic safety type high-voltage variable frequency rectifier box is electrically connected with the explosion-proof high-voltage variable frequency inversion box, and the explosion-proof and intrinsic safety type high-voltage variable frequency cooler is connected with the explosion-proof and intrinsic safety type high-voltage variable frequency rectifier box and the explosion-proof high-voltage variable frequency inversion box through an electric pipeline and a cooling pipeline. A high-voltage variable frequency technology is applied to the field of explosion-proof electrics, thus the explosion-proof and intrinsic safety type high-voltage variable-frequency governor has the pioneering property, belongs to the pioneering invention, fills the home and abroad technologies of the application o of the high-voltage variable-frequency governor to the explosion-proof field, provides a novel technology for the energy saving of the high-voltage explosion-proof motor in an explosive gas environment, and has wide social effect and economic effect.
Description
Technical field
The present invention relates to a kind of Flameproof and intrinsically safe high voltage variable frequency speed regulator, belong to explosion-proof electrification, power electronics applied technical field.
Background technology
Elevator, belt conveyer, water pump and blower fan are used very extensive under the coal mine, some elevator of down-hole, belt conveyer, water pump and blower motor adopt hv explosion-proof motor, speed governing part to hv explosion-proof motor adopts rotor series resistance speed or fluid power coupling mode of speed regulation at present, above-mentioned mode of speed regulation mainly is unnecessary electric energy to be converted into thermal energy consumption fall, and this mode of speed regulation power consumption is big, failure rate is high.Blower motor is not then adopted mode of speed regulation, is to rely on the adjusting of baffle opening or fan blade angle is finished to the adjusting of air quantity, and unnecessary air quantity then consumes by auxilliary road, and these all are the function modes of highly energy-consuming.High voltage converter is well confirmed the speed adjusting performance of high-voltage motor, high voltage converter has had a lot of successful examples on the ground, but, pertinent regulations according to national safety of coal mines, common high voltage converter is directly to be applied in the explosive gas atmosphere, must develop the high-voltage explosion-proof frequency converter that meets the explosion-proof electrification national standard, just can in explosive gas atmosphere under the coal mine, use.The colliery subsurface environment is abominable, performance requirement height to product, therefore, high voltage converter is applied in explosion-proof field, must solve the big devices of caloric value such as power cell under the high-power high voltage condition and reactor, heat dissipation problem in the flame proof housing, not in the flame proof housing be electrically connected flame proof or intrinsic safety is sent out the meter problem, each parts of high voltage converter location problem in the flame proof housing or the like.
High voltage converter is used in the explosive gas atmosphere, and the applicant belongs to the enterprise that domestic and international first hand is felt free to try, and process reaches the scientific research in 2 years, and the applicant has solved the various difficult problems of flameproof high-voltage frequency converter.
Summary of the invention
Technical problem to be solved by this invention provides a kind of flameproof high-voltage variable-frequency governor that can effectively move in explosive gas atmosphere.
In order to solve the problems of the technologies described above, the invention provides a kind of Flameproof and intrinsically safe high voltage variable frequency speed regulator, it is characterized in that this high voltage variable frequency speed regulator comprises a Flameproof and intrinsically safe high-pressure frequency conversion rectifier case, a flameproof high-voltage frequency conversion inversion case and a Flameproof and intrinsically safe high-pressure frequency-conversion cooler; Described Flameproof and intrinsically safe high-pressure frequency conversion rectifier case is by being electrically connected flameproof high-voltage frequency conversion inversion case, and described Flameproof and intrinsically safe high-pressure frequency-conversion cooler is by electric Flameproof and intrinsically safe high-pressure frequency conversion rectifier case and the flameproof high-voltage frequency conversion inversion case of being connected with cooling line;
Described Flameproof and intrinsically safe high-pressure frequency conversion rectifier case comprises rectifier bridge and the low voltage control dish that assembly rectification Flameproof box, current transformer, inlet wire reactor, voltage sensor, inlet wire filter capacitor, some SGCT constitute; Described current transformer and voltage sensor are connected on the three-phase alternating current bus, are connected inlet wire electric capacity on the ac bus between described inlet wire reactor and the rectifier bridge; One intrinsic safety electric source plate is arranged in the described low voltage control dish; Each SGCT of described rectifier bridge all adopts independent water-cooling, and described reactor adopts air cooling and the heat radiation of water-cooled compound mode;
Described flameproof high-voltage frequency conversion inversion case comprises inverter bridge, AC side Hall effect current instrument transformer, voltage sensor, the motor filter capacitor that assembly inversion Flameproof box, direct current reactor, DC side hall effect sensor, SGCT constitute; Dc bus passes described DC side hall effect sensor, the end of incoming cables of this inversion case connects direct current reactor, the output of this direct current reactor connects the inverter bridge input, this inverter bridge output AC bus passes AC side Hall effect current instrument transformer and connects voltage sensor, connects the motor filter capacitor on the described inverter bridge output ac bus;
Described Flameproof and intrinsically safe high-pressure frequency-conversion cooler comprises a pump rack and a heat exchanger; Described pump rack comprises two flame proof water pumps, the liquid-level switch in this pump rack be electrically connected the employing intrinsic safety electric source; Described heat exchanger comprises two flame proof cooling fans.
Further, the input of the output of described rectifier bridge and inverter bridge all is connected a reactor.
Further again, each SGCT that constitutes rectifier bridge and inverter bridge all has a cover independent driving circuits and a water cooling plant, and above-mentioned SGCT, drive circuit and water cooling plant are integrated on the support.
Further again, in the described flameproof high-voltage frequency conversion inversion case condensation transducer, condensation controller and heater are installed.
Beneficial effect of the present invention is:
1, the present invention is applied in the flame proof electric field with the high-pressure frequency-conversion technology, itself just has pioneering, belong to pioneering invention, filled up the domestic and international technological gap that high voltage converter is used in the flame proof field, provide a new technology for the hv explosion-proof motor in the explosive gas atmosphere is energy-conservation, had social effect and economic benefits widely;
2, the present invention adopts water-cooled to add the mode of air-cooled combination, has properly settled flame proof housing internal reactance device, power device heat dissipation problem, for high voltage converter provides reliable assurance in the flame proof environmental applications.
3, cooler of the present invention adopts two flame proof water pumps, and one is equipped with a usefulness, and Redundancy Design has satisfied the system reliability requirement.
4, in rectifier box of the present invention and the inversion case condensation transducer, condensation controller and heater are installed, under the long-time stopped status of system, condensation may occur in the case, system carried out heat treated before starting, guaranteed reliability of system operation.
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Description of drawings
Fig. 1 is the main TV structure schematic diagram of flameproof high-voltage variable-frequency governor of the present invention;
Fig. 2 is the plan structure schematic diagram of flameproof high-voltage variable-frequency governor of the present invention;
Fig. 3 is flameproof high-voltage variable-frequency governor rectifier input circuit figure of the present invention;
Fig. 4 is flameproof high-voltage variable-frequency governor rectifier circuit figure of the present invention;
Fig. 5 is a flameproof high-voltage variable-frequency governor inverter circuit diagram of the present invention;
Fig. 6 is flameproof high-voltage variable-frequency governor inverter outgoing line circuit figure of the present invention.
The Reference numeral note:
1 Flameproof and intrinsically safe high-pressure frequency conversion rectifier case; 2 Flameproof and intrinsically safe high-pressure frequency-conversion coolers; 3 flameproof high-voltage frequency conversion inversion casees; 4 pump racks; 5 heat exchangers.
Embodiment
As shown in Figure 1 and Figure 2, the invention provides a kind of Flameproof and intrinsically safe high voltage variable frequency speed regulator, this Flameproof and intrinsically safe high voltage variable frequency speed regulator is made up of three parts, comprising a Flameproof and intrinsically safe high-pressure frequency conversion rectifier case 1, a flame proof high-pressure frequency-conversion inversion case 3 and a Flameproof and intrinsically safe high-pressure frequency-conversion cooler 2, described Flameproof and intrinsically safe high-pressure frequency-conversion cooler 2 is to be made of a pump rack 4 and a heat exchanger 5; The inlet wire input of described Flameproof and intrinsically safe high-pressure frequency conversion rectifier case 1 is electrically connected with the 6KV three-phase alternating current by the explosion insulation connecting line cavity on the rectifier box, the dc bus output of this rectifier box 1 is connected by the input of explosion insulation connecting line cavity with flame proof high-pressure frequency-conversion inversion case 3, and the ac bus output of this inversion case 3 is connected with three phase electric machine; Water-cooling system pipelines in described rectifier box 1 and the inversion case 2 are connected the water side and the water inlet end of the pump rack 4 of described Flameproof and intrinsically safe high-pressure frequency-conversion cooler 2 by the stainless steel pipes that is placed on the flame proof housing, intrinsic safety electric source plate in the liquid-level switch of this pump rack 4 and the rectifier box 1 is connected, described pump rack 4 comprises two flame proof water pumps, described heat exchanger 5 comprises two flame proof cooling fans, and the aerial cooler input and output side in this pump rack 4 and the heat exchanger 5 is connected.
As shown in Figure 3, Figure 4, Flameproof and intrinsically safe high-pressure frequency conversion rectifier case comprises rectifier bridge and the low voltage control dish that assembly rectification Flameproof box, current transformer, inlet wire reactor DILR, voltage sensor VSB1, inlet wire filter capacitor LFC, some SGCT constitute; Pass described current transformer on the three-phase alternating current bus and connect voltage sensor, on the ac bus between described inlet wire reactor DILR and the rectifier bridge, be connected inlet wire electric capacity LFC; One intrinsic safety electric source plate is arranged in the described low voltage control dish; Each SGCT of described rectifier bridge all adopts independent water-cooling, and described reactor adopts air cooling and the heat radiation of water-cooled compound mode; Described current transformer adopts U phase current mutual inductor CT1U, W phase current mutual inductor CT1W and earth fault current instrument transformer GFCT, the output of described rectifier bridge all connects a reactor DRR, each SGCT that constitutes rectifier bridge all has a cover independent driving circuits and a water cooling plant, and above-mentioned SGCT, drive circuit and water cooling plant are integrated on the support.
As Fig. 5, shown in Figure 6, described flameproof high-voltage frequency conversion inversion case comprises inverter bridge, AC side Hall effect current instrument transformer HECSU and HECSW, voltage sensor VSB2, the motor filter capacitor MFC that assembly inversion Flameproof box, direct current reactor DCL, DC side hall effect sensor HECSDC1, SGCT constitute; Dc bus passes described DC side hall effect sensor HECSDC1, the end of incoming cables of this inversion case connects direct current reactor DCL, the output of this direct current reactor DCL connects the inverter bridge input, pass AC side Hall effect current instrument transformer on this inverter bridge output AC bus and connect voltage sensor, connect motor filter capacitor MFC on the described inverter bridge output ac bus; The input of described inverter bridge all connects a reactor DRI, each SGCT that constitutes inverter bridge all has a cover independent driving circuits and a water cooling plant, above-mentioned SGCT, drive circuit and water cooling plant are integrated on the support, in the described flameproof high-voltage frequency conversion inversion case condensation transducer, condensation controller and heater are installed.
The invention is not restricted to the described scope of the foregoing description, every technology distortion of being done according to the technical solution of the present invention know-why all falls within protection scope of the present invention.
Claims (4)
1. a Flameproof and intrinsically safe high voltage variable frequency speed regulator is characterized in that, this high voltage variable frequency speed regulator comprises a Flameproof and intrinsically safe high-pressure frequency conversion rectifier case, a flameproof high-voltage frequency conversion inversion case and a Flameproof and intrinsically safe high-pressure frequency-conversion cooler; Described Flameproof and intrinsically safe high-pressure frequency conversion rectifier case is by being electrically connected flameproof high-voltage frequency conversion inversion case, and described Flameproof and intrinsically safe high-pressure frequency-conversion cooler is by electric Flameproof and intrinsically safe high-pressure frequency conversion rectifier case and the flameproof high-voltage frequency conversion inversion case of being connected with cooling line;
Described Flameproof and intrinsically safe high-pressure frequency conversion rectifier case comprises rectifier bridge and the low voltage control dish that assembly rectification Flameproof box, current transformer, inlet wire reactor, voltage sensor, inlet wire filter capacitor, some SGCT constitute; Described current transformer and voltage sensor are connected on the three-phase alternating current bus, are connected inlet wire electric capacity on the ac bus between described inlet wire reactor and the rectifier bridge; One intrinsic safety electric source plate is arranged in the described low voltage control dish; Each SGCT of described rectifier bridge all adopts independent water-cooling, and described reactor adopts air cooling and the heat radiation of water-cooled compound mode;
Described flameproof high-voltage frequency conversion inversion case comprises inverter bridge, AC side Hall effect current instrument transformer, voltage sensor, the motor filter capacitor that assembly inversion Flameproof box, direct current reactor, DC side hall effect sensor, SGCT constitute; Dc bus passes described DC side hall effect sensor, the end of incoming cables of this inversion case connects direct current reactor, the output of this direct current reactor connects the inverter bridge input, this inverter bridge output AC bus passes AC side Hall effect current instrument transformer and connects voltage sensor, connects the motor filter capacitor on the described inverter bridge output ac bus;
Described Flameproof and intrinsically safe high-pressure frequency-conversion cooler comprises a pump rack and a heat exchanger; Described pump rack comprises two flame proof water pumps, the liquid-level switch in this pump rack be electrically connected the employing intrinsic safety electric source; Described heat exchanger comprises two flame proof cooling fans.
2. Flameproof and intrinsically safe high voltage variable frequency speed regulator according to claim 1 is characterized in that, the output of described rectifier bridge all is connected a reactor with the input of inverter bridge.
3. Flameproof and intrinsically safe high voltage variable frequency speed regulator according to claim 2, it is characterized in that, each SGCT that constitutes rectifier bridge and inverter bridge all has a cover independent driving circuits and a water cooling plant, and above-mentioned SGCT, drive circuit and water cooling plant are integrated on the support.
4. Flameproof and intrinsically safe high voltage variable frequency speed regulator according to claim 3 is characterized in that, in the described flameproof high-voltage frequency conversion inversion case condensation transducer, condensation controller and heater is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010518149 CN101976936A (en) | 2010-10-25 | 2010-10-25 | Explosion-proof and intrinsic safety type high-voltage variable-frequency governor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010518149 CN101976936A (en) | 2010-10-25 | 2010-10-25 | Explosion-proof and intrinsic safety type high-voltage variable-frequency governor |
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| CN101976936A true CN101976936A (en) | 2011-02-16 |
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| CN 201010518149 Pending CN101976936A (en) | 2010-10-25 | 2010-10-25 | Explosion-proof and intrinsic safety type high-voltage variable-frequency governor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102307000A (en) * | 2011-09-14 | 2012-01-04 | 江苏聚友电气有限公司 | Mining high-voltage frequency converter with explosion-proof type |
| CN103762830A (en) * | 2014-01-02 | 2014-04-30 | 江苏中联电气股份有限公司 | Mining high-voltage inverter |
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| CN2938567Y (en) * | 2006-08-15 | 2007-08-22 | 唐山开诚电器有限责任公司 | Explosive-proof compatible safe four-quadrant frequency converter speed regulation system of digital mine hoist |
| CN201341114Y (en) * | 2008-12-31 | 2009-11-04 | 焦作市明株自动化工程有限责任公司 | Explosion suppression type four-quadrant variable frequency speed regulator |
| CN201450485U (en) * | 2009-08-04 | 2010-05-05 | 西安华光信息技术有限责任公司 | Mining explosion-suppression and instinctive safety type combined variable frequency speed regulating device |
| CN201536226U (en) * | 2009-07-25 | 2010-07-28 | 安徽省电力公司阜阳供电公司 | Terminal box capable of automatically removing humidity |
| CN201821318U (en) * | 2010-10-25 | 2011-05-04 | 北京中矿华飞科技有限公司 | Flameproof and intrinsically safe high-voltage variable-frequency speed regulator |
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2010
- 2010-10-25 CN CN 201010518149 patent/CN101976936A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2938567Y (en) * | 2006-08-15 | 2007-08-22 | 唐山开诚电器有限责任公司 | Explosive-proof compatible safe four-quadrant frequency converter speed regulation system of digital mine hoist |
| CN201341114Y (en) * | 2008-12-31 | 2009-11-04 | 焦作市明株自动化工程有限责任公司 | Explosion suppression type four-quadrant variable frequency speed regulator |
| CN201536226U (en) * | 2009-07-25 | 2010-07-28 | 安徽省电力公司阜阳供电公司 | Terminal box capable of automatically removing humidity |
| CN201450485U (en) * | 2009-08-04 | 2010-05-05 | 西安华光信息技术有限责任公司 | Mining explosion-suppression and instinctive safety type combined variable frequency speed regulating device |
| CN201821318U (en) * | 2010-10-25 | 2011-05-04 | 北京中矿华飞科技有限公司 | Flameproof and intrinsically safe high-voltage variable-frequency speed regulator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102307000A (en) * | 2011-09-14 | 2012-01-04 | 江苏聚友电气有限公司 | Mining high-voltage frequency converter with explosion-proof type |
| CN103762830A (en) * | 2014-01-02 | 2014-04-30 | 江苏中联电气股份有限公司 | Mining high-voltage inverter |
| CN103762830B (en) * | 2014-01-02 | 2016-07-06 | 江苏中联电气股份有限公司 | Mining high-voltage converter |
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Application publication date: 20110216 |