CN201063889Y - Intermediate frequency power supply induction heater - Google Patents
Intermediate frequency power supply induction heater Download PDFInfo
- Publication number
- CN201063889Y CN201063889Y CNU2007200637797U CN200720063779U CN201063889Y CN 201063889 Y CN201063889 Y CN 201063889Y CN U2007200637797 U CNU2007200637797 U CN U2007200637797U CN 200720063779 U CN200720063779 U CN 200720063779U CN 201063889 Y CN201063889 Y CN 201063889Y
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- intermediate frequency
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Abstract
The utility model belongs to a frequency conversion, fixed frequency and energy saving intermediate frequency power supply induction heating device; the intension of the utility model is to provide a intermediate frequency power supply induction heating device, which is widely applied to complete equipment in casting and heat treatment such as intermediate frequency smelting, through-heating, quenching, annealing, soldering, sintering and heat preservation, etc. and replaces the first generation and the second generation similar products. The utility model comprises a power cabinet and is characterized in that the power cabinet is provided inside with a whole circuit consisting of a rectifying bridge, an inverter, a current converter, an LC series resonance circuit, a voltage transformer, a main control board, a driver, a three phase power supply and a protective link. The utility model has the advantages of high efficiency and energy conservation, frequency conversion and fixed frequency, small volume, light weight, multifunctional regulation, multi-protection, low noise, no environmental pollution and easy starting, maintenance and operation, and has substantive characteristics and technical progresses.
Description
Technical field
The utility model belongs to the frequency conversion energy-conservation mid-frequency power inductive heating device of frequency surely.
Background technology
In casting and heat treatment industry, the Frequency Induction Heating of intermediate frequency (IF) smelting, diathermanous, quenching, annealing, welding, sintering, insulation etc. is to use electromagnetic induction principle, put workpiece in alternating magnetic field, generate heat owing to kelvin effect directly produces eddy current at workpiece self, reach the requirement of heating such as melting, diathermanous, quenching.It has that heating is fast, scaling loss is few, be convenient to control temperature, guarantee heating quality, improve the work working condition, be easy to make up characteristic such as transfer matic production, is used widely on production lines such as smelting, Forge Heating, quenching, annealing, welding, sintering, insulation.First generation product is to become a unit with intermediate frequency generator of a motor band, and it can not the frequency modulation Power Regulation, and power consumption is big, and noise is big, and floor space is big; Second generation product is to do intermediate frequency power supply with controllable silicon, be called static frequency-conversion, when high band (6-9KHz), job insecurity, the failure rate height, startup is to adopt self-exciting starting, frequency changes with load, controlled frequency conversion scope can only be done among a small circle and to adjust, though efficient than first generation product height, load variations makes the operating frequency instability during work.
Summary of the invention
At the problems referred to above, the purpose of this utility model provides a kind of mid-frequency power inductive heating device, be to be widely used in complete set of equipments such as the intermediate frequency (IF) smelting in casting and the heat treatment, diathermanous, quenching, annealing, welding, sintering, insulation, the replacement first generation, second generation like product.The utility model is realized with following mode: a kind of mid-frequency power inductive heating device, it comprises power cabinet, it is characterized in that having the integrated circuit that is made of rectifier bridge, inverter, power pack, LC series resonant tank, voltage transformer, master board, driver and three phase mains, protection link in power cabinet; Above-mentioned rectifier bridge connects inverter, connects power pack, LC series resonant tank, voltage transformer more successively; The protection link connects master board, driver, inverter successively; Power pack connects with master board; Voltage transformer connects with master board; Above-mentioned rectifier bridge connects three phase mains.The utility model is energy-efficient, frequency conversion frequency, little, in light weight, the multi-functional adjusting of volume, many protections, low noise, non-environmental-pollution, easily startup, easily maintenance, easy to operate surely, and substantive distinguishing features and technological progress are arranged.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model.
Fig. 2 is integrated circuit figure of the present utility model.
Embodiment
Now the utility model is described in further detail in conjunction with the accompanying drawings.With reference to Fig. 1, Fig. 2, operation principle of the present utility model: the frequency conversion energy-conservation intermediate frequency power supply of frequency surely is to adopt the novel electric power power device as inverter circuit, and commutating circuit adopts three-phase half control rectifier bridge, and the intermediate frequency loop is a LC series resonance mode.After the three-phase voltage that exchanges 380V is by rectification, becomes a direct current voltage and be added in inverter bridge two ends.At this moment main control loop produces the rectangle square wave of two tunnel phase phasic differences, 180 degree by resonance, amplify the after-applied control utmost point through drive circuit to the IGBT pipe, make four IGBT pipes be divided into two groups (half-bridge then is that two IGBT are divided into two groups), conducting is supplied with an alternating voltage to the LC series loop in turn, thereby produces the work that an alternating current is finished processing work.The frequency of voltage is determined that by the resonance frequency of control loop the size of voltage is decided by the control direct voltage.This product also has the kinds of protect function simultaneously, comprises protections such as over-voltage over-current protection, hydraulic pressure protection, power component superhigh temperature, short circuit, and the operation that this product can be safe and reliable is used.
Service condition:
Indoor installation, and should under following condition, use: 1, height above sea level should be no more than 1500 meters.2, ambient temperature be no more than+40 ℃, in 24 hours periods mean temperature be no more than+35 ℃, minimum ambient temperature be+5 ℃, the storage minimum temperature is-30 ℃ (should remove cooling fluid).3, relative air humidity is no more than 50% when maximum temperature is+40 ℃, when lower temperature, allows higher relative humidity.Can be no more than 90% in the time of for example below 20 ℃.Dust, acid, salt, corrosivity and the damp that 4, must not contain conduction in the air.5, device should be vertically mounted on the place of no high vibration and impact, and its gradient must not surpass 5 degree.6, the inlet temperature of cooling water is+5 ℃～+ 35 ℃, and quality of cooling water requires to meet the service condition of water-cooled half guiding element, and acidity-basicity ph value is in 6～9 scopes.Hardness is not more than 10 degree (every degree is to contain the 10mg calcium oxide in 1 premium on currency); Resistivity is greater than 20K Ω .CM.
Main technical detail:
Technical data and explanation subordinate list:
Equipment is installed:
1, equipment transport to or devan after should inspect each electric elements and have or not and come off by damaged evil idea and the phenomenon of making moist, should repair or dry if any above-mentioned situation, treat that defective is eliminated after, can use.2, equipment is installed in the well-ventilated, is not subjected to the place of rainwater invasion and attack, and equipment should keep certain distance with wall.3, crust of the device all should reliable ground.4, check that each water route tie point has not loosening or the disengagement phenomenon, whether water pipe bends and stops up, if there is above-mentioned situation to repair, will can use after whole water pipe water outlets normally.Three phase mains should be connected on respectively on the respective terminal of this device when 5, equipment is installed and used, the end of a thread should be solid and reliable.6, every phase cross section of inlet wire copper core cable:
| Installed capacity (Kw) | 100 | 160～200 | 250 | 500 |
| The cross-section of cable (mm) | ＞100 | ＞140 | ＞185 | ＞360 |
If use aluminium cable, answer 1.3 times of sectional areas of corresponding increase, three-phase inlet wire length can not surpass 30 meters, otherwise will increase line loss.7, before device uses, drive water valve earlier into institute's water pressure gauge of adorning is indicated between 0.1～0.15MPa.Install required cooling water and should satisfy 6 of binomials institute and make demands, when device was used for melting, water system should still can provide the standby water cooling of sufficient amount to smelting furnace when grid power blackout.This device water consumption sees Table.
Power supply characteristic:
1, native system has in use random frequency adjustable, adjustable extent 1-5KHz, 5-10KHz, and this is that other any intermediate frequency power supplies do not possess.2, control system is divided into plurality of modules by function, reduces fault, is convenient to safeguard.3, three-phase half controlled bridge pressure regulation Power Regulation is partly adopted in the native system rectification, and reliability height, fault are few.4, control board adopts digitizer to make system have regulating characteristicss such as high constant current, constant voltage, permanent merit, permanent power factor (PF).5, native system possesses zero-pressure is arranged, partly presses and the full voltage starting characteristic; can need and setting arbitrarily with the user; the formula frequent starting work of can also starting shooting, shut down, start shooting greatly makes things convenient for the user to use having under the loading condition of various different needs, and this is that other intermediate frequency power supply is not available.6, native system adopts Hall voltage and current sensor nuclear to survey, and accomplishes the control precision height, and speed is fast.7, native system has extremely low operation noise, and the operation noise is lower than 65 decibels in 1-5KHz, and the operation noise is lower than 30 decibels in the 5-10KHz, has not almost had what noise more than the 12KHz.8, native system has the complete protection function: comprise protections such as line voltage is too high, line voltage is low excessively, water temperature is high, hydraulic pressure is low, discharge is low, system's overcurrent, power component superhigh temperature, short circuit, select for the user.9, the native system type of cooling all adopts water-cooled, and power component cooler and water lines all adopt red copper manufacturing, good cooling results, long service life.10, native system has complete fault Presentation Function, when occurring a certain important fault in the system, all has corresponding indicator light to show on its panel, keeps in repair to make things convenient for the user, has greatly shortened the maintenance cycle of equipment.11, all main components and parts of native system all are the world name factory product (as IGBT, driver etc.) of imported with original packaging.12, native system adopts separately driven circuit, so its frequency stability is fabulous, can substitutes the replacement of intermediate frequency unit fully and use, and its power consumption saves about 40% than intermediate frequency unit.(with constant power output).13, native system is easy to operate, adjusts simple.Allly used the user of intermediate frequency unit all to know, its adjustment process is very complicated, and native system makes it become very simple when adjusting because have four of IF-FRE, voltage of intermediate frequency, capacitor group, the induction hardening transformer turn ratioes etc. to adjust point.14, native system is simple in structure, volume is little, its capacitor for electric induction heating system is installed in the frequency conversion tank, and knife switch combination in any condenser capacity arranged, make it easy to adjust, it only has one of power supply frequency conversion tank in quenching, one in mid frequency induction hardening transformer, and its floor space is minimum, and (200KW complete set of equipments floor space is less than 2m
2), so just having increased workshop widely effectively uses the place.15, because of the native system major loop adopts series resonant circuit, so its resonance current is little, and the long distance electric loss is little, and the diameter of cable can reduce, thereby has reduced the production cost of investment, and series resonant circuit also is adapted to the diathermanous of multistation especially and quenches.16, because of its make-and-break time of import high-power IGBT is the ns level, so apply to middle and high frequency circuit especially, its reliability is much higher than thyristor intermediate frequency electric source.
Using method (being suitable for the 100/8000IGPS intermediate frequency power supply):
1, installs when product, with exchange the power supply of 380V and load connect good and check errorless after, at first connect the water source and check whether the normally closed interlock of water-pressure relay is opened, determine cooling water inflow whether enough (water-pressure relay just mixes up) in delivery test with this; 2, close primary air switch behind the cabinet, the cabinet inner control of closing power supply air switch K
2, press reset switch on the cabinet face, have only power supply indicator bright on the cabinet internal controller this moment.3, the power adjustments on the cabinet face is on earth left-handed, cabinet face upper frequency is regulated dextrorotation (power setting of this moment is minimum, and frequency setting is for the highest) on earth; 4, by start button, by the energize main contactor, press play button, this moment power supply enter operating state.5, regulate the power adjusting knob, make it reach power demand, (voltage of intermediate frequency * electric current of intermediate frequency), the regulating frequency adjusting knob makes it reach required frequency.6, when the power factor in intermediate frequency power supply loop can not meet the demands, can close respectively or draw back is installed in one group of interior knife switch of capacitor panel, regulates the intermediate frequency power factor value.Perhaps also rotatable frequency modulation potentiometer changes power factor by the size of regulating IF-FRE, when noting adopting first method to regulate the intermediate frequency power factor, can carry out behind the disconnection voltage of intermediate frequency earlier; 7, after a workpiece completion of processing, the stand-by period can be pressed stop button, and this moment, voltage of intermediate frequency disconnected, but major loop and control loop are still charged; 8, when after hours, can press the stop button that is contained on the cupboard panel, press cut-off button again, this moment, main contactor disconnected, the control mains switch of leaving behind, and all power supplys disconnect in the primary air switch behind the cabinet of leaving behind at last, cabinet; 9, when system works is undesired, three red light emitting diodes that are contained on the cabinet inner control box can be luminous, respectively indication mechanism overvoltage, overcurrent, IGBT power component short-circuit protection.The worker should show according to corresponding fault, finds out reason, and gets rid of immediately, presses reset button then, and system just can lift a blockade, and recovers operate as normal; 10, after the work of this equipment process certain hour, should check on time that dust and dirt in the elimination machine is changed the deterioration part, fastening loosening parts check whether cooling water is unimpeded, tightens leakage area, in time rebuild equipment, so that make its normal operation.
Different steels are the diameter or the sheet metal thickness selected frequency term of reference of part in addition
| Frequency Hz | 50 | 500 | 1000 | 2500 | 4000 | 8000 |
| Diameter mm | ＞160 | 70～160 | 55～120 | 35～80 | 30～60 | 20～40 |
| Thickness of slab mm | ＞160 | 65～160 | 45～80 | 25～60 | 20～50 | 15～40 |
The contour size of the unit(s) of the utility model embodiment: long 1000 millimeters, wide 600 millimeters, high 2000 millimeters.
Claims (1)
1. Frequency power induction heater in a kind, it comprises power cabinet, it is characterized in that having the integrated circuit that is made of rectifier bridge, inverter, power pack, LC series resonant tank, voltage transformer, master board, driver and three phase mains, protection link in power cabinet; Above-mentioned rectifier bridge connects inverter, connects power pack, LC series resonant tank, voltage transformer more successively; The protection link connects master board, driver, inverter successively; Power pack connects with master board; Voltage transformer connects with master board; Above-mentioned rectifier bridge connects three phase mains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200637797U CN201063889Y (en) | 2007-07-10 | 2007-07-10 | Intermediate frequency power supply induction heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200637797U CN201063889Y (en) | 2007-07-10 | 2007-07-10 | Intermediate frequency power supply induction heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201063889Y true CN201063889Y (en) | 2008-05-21 |
Family
ID=39452276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200637797U Expired - Fee Related CN201063889Y (en) | 2007-07-10 | 2007-07-10 | Intermediate frequency power supply induction heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201063889Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435856A (en) * | 2011-09-01 | 2012-05-02 | 阳春丽 | Method for measuring induction heating load inductance |
| CN105515433A (en) * | 2015-12-27 | 2016-04-20 | 哈尔滨米米米业科技有限公司 | High-precision intermediate-frequency power source |
| CN108461872A (en) * | 2018-02-28 | 2018-08-28 | 北京国能电池科技股份有限公司 | Connect the interlocking protective device of heating circuit and system |
| CN109929975A (en) * | 2017-12-18 | 2019-06-25 | 上海北特科技股份有限公司 | The method of putty monitoring and eliminating system and putty monitoring and rejecting |
-
2007
- 2007-07-10 CN CNU2007200637797U patent/CN201063889Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435856A (en) * | 2011-09-01 | 2012-05-02 | 阳春丽 | Method for measuring induction heating load inductance |
| CN105515433A (en) * | 2015-12-27 | 2016-04-20 | 哈尔滨米米米业科技有限公司 | High-precision intermediate-frequency power source |
| CN109929975A (en) * | 2017-12-18 | 2019-06-25 | 上海北特科技股份有限公司 | The method of putty monitoring and eliminating system and putty monitoring and rejecting |
| CN109929975B (en) * | 2017-12-18 | 2024-03-26 | 上海北特科技股份有限公司 | Blocking material monitoring and removing system and blocking material monitoring and removing method |
| CN108461872A (en) * | 2018-02-28 | 2018-08-28 | 北京国能电池科技股份有限公司 | Connect the interlocking protective device of heating circuit and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shenzhen Huaguan Electric Co., Ltd. Assignor: Xiangtan Kechuang Electromechanical Co., Ltd. Contract fulfillment period: 2008.11.8 to 2015.11.8 Contract record no.: 2009440000003 Denomination of utility model: Maximum power factor control method of intermediate frequency power supply induction heating apparatus Granted publication date: 20080521 License type: Exclusive license Record date: 20081229 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.11.8 TO 2015.11.8; CHANGE OF CONTRACT Name of requester: SHENZHEN CITY HUAGUAN ELECTRIC APPLICANCE CO., LTD Effective date: 20081229 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080521 Termination date: 20110710 |