CN203881129U - Vacuum induction melting furnace - Google Patents
Vacuum induction melting furnace Download PDFInfo
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- CN203881129U CN203881129U CN201320782756.7U CN201320782756U CN203881129U CN 203881129 U CN203881129 U CN 203881129U CN 201320782756 U CN201320782756 U CN 201320782756U CN 203881129 U CN203881129 U CN 203881129U
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- thermal insulation
- insulation board
- vacuum
- pressure sensor
- control unit
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Abstract
The utility model relates to a vacuum induction melting furnace. The vacuum induction melting furnace comprises a furnace body, a power supply control unit, a vacuum pump, a first thermal insulation board, a main pressure sensor, and a processing controller. The key points are that the top surface of the first thermal insulation board is fixedly connected with the bottom surface of a crucible; the main pressure sensor is fixedly disposed at the center of gravity of the bottom surface of the first thermal insulation board; the processing controller is electrically connected with the power supply control unit and the main pressure sensor; and the processing controller controls power supply input values of the power supply control unit on the basis of crucible pressure signals measured by the main pressure sensor. Through the above scheme, when furnace burdens different in weight are melt in the vacuum melting furnace, the needed power supply and input power, corresponding to the different furnace burdens, can be controlled in a reasonable manner, so that unnecessary energy loss is reduced, and then the melting rate of the vacuum melting furnace is relatively improved.
Description
Technical field
The utility model relates to a kind of crucible furnace that is applicable to process furnace charge in vacuum environment, especially relates to a kind of vacuum induction melting furnace that adopts electromagnetic induction heating.
Background technology
Vacuum induction melting furnace refers to that a kind of electromagnetic induction that utilizes under vacuum condition produces the smelting furnace that eddy current adds thermal material in conductor.
Refer to Fig. 1, Fig. 1 is the structural representation of prior art vacuum melting furnace.Vacuum induction melting furnace 10 in Fig. 1 comprises body of heater 11, power control unit 12 and vavuum pump 13.The crucible 111 that these body of heater 11 inside are provided with sensed coil winding with and outer wall be provided with vacuum valve.This power control unit 12 is arranged on the outside of this body of heater 11 and is electrically connected to this induction coil, and this vavuum pump 13 is arranged on these body of heater 11 outsides and the vacuum valve by pipeline and this body of heater 11 is tightly connected.Although this vacuum induction melting furnace is widely used in processing multiple furnace charge, its ubiquity such defect: the power-supply system in power control unit is perfect not.The input voltage of power control unit and input power is constant or the state that can not be sintered according to the weight of furnace charge in crucible and furnace charge judges and regulates it is carried out to melting required suitable input voltage and input power when processing the furnace charge of Different Weight.When input voltage and input power are excessive, lead this vacuum melting furnace 10 and in the process of melting furnace charge, consume energy too much, cause unnecessary energy loss.When input voltage and input power are too small, can affect by the quality of the furnace charge of melting, and reduce the efficiency of melting.
Utility model content
The purpose of this utility model is that the shortcoming that overcomes prior art is with not enough, for vacuum melting furnace reasonably having been controlled to its corresponding required input power supply and input power when the furnace charge of melting Different Weight, reduce unnecessary energy loss and also relatively improve thus the melting speed of vacuum melting furnace, a kind of vacuum induction melting furnace is provided.
The utility model is achieved through the following technical solutions: a kind of vacuum induction melting furnace, body of heater, power control unit and vavuum pump.The crucible that is provided with sensed coil winding in this body of heater with and sidewall be provided with vacuum valve; This power control unit is arranged on the outside of this body of heater and is electrically connected to this induction coil, and this vavuum pump is arranged on this body of heater outside and its import vacuum valve by pipeline and this body of heater and is tightly connected.Importantly: this vacuum induction melting furnace also comprises the first thermal insulation board, total pressure sensor and processing controller.The end face of this first thermal insulation board is fixedly connected with this crucible bottom surface; This total pressure sensor is fixedly installed on the center of gravity place of this first thermal insulation board bottom surface; This processing controller is electrically connected to this power control unit and this total pressure sensor respectively, and the crucible pressure signal that records according to this total pressure sensor of this processing controller is controlled the power supply input value of this power control unit.Pass through such scheme, the utility model has reasonably been controlled its corresponding required input power supply and input power to vacuum melting furnace when the furnace charge of melting Different Weight, has reduced unnecessary energy loss and has relatively improved thus the melting speed of vacuum melting furnace.
This vacuum induction melting furnace also comprises the second thermal insulation board and four partial pressure sensors that are electrically connected to this processing controller.This second thermal insulation board is fixedly installed between this crucible bottom surface and this first thermal insulation board.Four described partial pressure sensors are separately positioned on the place, four angles of this second thermal insulation board bottom surface, and its lower end is fixedly connected on the end face of this first thermal insulation board.The crucible pressure signal that this processing controller records according to this partial pressure sensor is further controlled the power supply input value of this power control unit and closing of this power control unit.Four partial pressure sensors are herein provided with and are beneficial to vacuum induction melting furnace Raw by the process instantiated of melting, realized the further control to the power supply input value of this power control unit in the utility model, further reduce the melting power consumption of vacuum induction melting furnace, save the energy.
As preferably, this first thermal insulation board is aerogel blanket thermal insulation board or vacuum insulation panel.Aerogel blanket thermal insulation board and vacuum insulation panel all have good effect of heat insulation.The characteristic such as wherein, this aerogel blanket thermal insulation board has that the easy Cai Jian of Rou Ruan ﹑ ﹑ density is little, hydrophobic Wu machine Fang Huo ﹑ integral body, environmental protection, thermal conductivity factor are low; This vacuum insulation panel is composited by filling core and vacuum protection top layer, does not contain any OD(ODS) material, there is environmental protection and energy-efficient characteristic.Therefore, the use of this aerogel blanket thermal insulation board and this vacuum insulation panel is conducive to environmental protection and reduces its impact on the melting environment in smelting furnace, and it has avoided the heat in body of heater to total pressure sensor transmission effectively, further guaranteed the stability of the operating temperature of total pressure sensor, made not Yin Wendu and affect certainty of measurement of this total pressure sensor.
As preferably, this second thermal insulation board is aerogel blanket thermal insulation board or vacuum insulation panel.Aerogel blanket thermal insulation board and vacuum insulation panel all have good effect of heat insulation.The use of this aerogel blanket thermal insulation board and this vacuum insulation panel is conducive to environmental protection and reduces its impact on the melting environment in smelting furnace, and it has avoided the heat in body of heater to partial pressure sensor transmission effectively, further guaranteed the stability of the operating temperature of partial pressure sensor, made not Yin Wendu and affect certainty of measurement of this partial pressure sensor.
Between the inwall of this body of heater and outer wall, be provided with vacuum layer.
In order to understand better and to implement, below in conjunction with accompanying drawing, describe the utility model in detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art vacuum induction melting furnace.
Fig. 2 is the structural representation of the utility model vacuum induction melting furnace.
Fig. 3 is the utility model vacuum induction melting furnace body of heater internal structure partial enlarged drawing.
Fig. 4 is the total pressure sensor upward view of looking up at toward total pressure sensor direction in the utility model vacuum induction smelting furnace body.
Fig. 5 is the partial pressure sensor upward view of looking up at toward partial pressure sensor direction in the utility model vacuum induction smelting furnace body.
The specific embodiment
Please refer to Fig. 2 and Fig. 3, wherein, Fig. 2 is the structural representation of the utility model vacuum induction melting furnace; Fig. 3 is the utility model vacuum induction melting furnace body of heater internal structure partial enlarged drawing.Vacuum induction melting furnace 20 in the utility model, comprises body of heater 21, power control unit 22, vavuum pump 23, the second thermal insulation board 24, four partial pressure sensors 25, the first thermal insulation board 26, total pressure sensor 27 and processing controllers 28.This power control unit 22 is arranged on these body of heater 21 outsides and is electrically connected to this body of heater 21, and this vavuum pump 23 is arranged on the outside of this body of heater 21 and is connected by pipeline and this body of heater 21.This second thermal insulation board 24, this partial pressure sensor 25, this first thermal insulation board 26 and this total pressure sensor 27 are all arranged in this body of heater 21.
Please refer to Fig. 4 and Fig. 5, wherein, Fig. 4 is the total pressure sensor upward view of looking up at toward total pressure sensor direction in the utility model vacuum induction smelting furnace body, and Fig. 5 is the partial pressure sensor upward view of looking up at toward partial pressure sensor direction in the utility model vacuum induction smelting furnace body.Wherein, four described partial pressure sensors 25 are fixedly installed between this second thermal insulation board 24 and this first thermal insulation board 26, and four described partial pressure sensors 25 are distributed in respectively the place, four angles of the bottom surface of this second thermal insulation board 24, to measure, in stove, need the pressure to these four angles by the furnace charge of melting.This total pressure sensor 27 is fixedly installed on the center of gravity place of these the first thermal insulation board 26 bottom surfaces, to measure the gross pressure of furnace charge in stove.This processing controller 28 is electrically connected to this power control unit 22, this partial pressure sensor 25 and this total pressure sensor 27 respectively, its furnace charge pressure signal recording according to this total pressure sensor 27 is controlled the power supply input value of this power control unit 22 when vacuum induction melting furnace 20 has just brought into operation, further, the furnace charge pressure signal that it records according to described partial pressure sensor 25 carries out difference processing, thereby changes the power supply input value of this power control unit 22 in the fusion process of this vacuum induction melting furnace 20.
Particularly, the crucible 211 that is provided with sensed coil winding in this body of heater 21 with and sidewall be provided with vacuum valve.The induction coil of these crucible 211 peripheries is electrically connected on this power control unit 22, and this vacuum valve is connected in the import of this vavuum pump 23 by seal for pipe joints.Further, between the inwall of this body of heater 21 and outer wall, be provided with vacuum layer.
Particularly, in this body of heater 21, the bottom surface of crucible 211 is fixedly installed on the end face of this second thermal insulation board 24, this second thermal insulation board 24 is pushed down tightly by this crucible 211, the partial pressure sensor 25, the first thermal insulation board 26 and the total pressure sensor 27 that are successively set under this second thermal insulation board 24 are all pushed down by this crucible 211 simultaneously tightly, thereby realize this partial pressure sensor 25 and 27 pairs of crucibles of this total pressure sensor, 211 pressure force measurements.
As preferably, this first thermal insulation board 26 is aerogel blanket thermal insulation board or vacuum insulation panel, and this second thermal insulation board 24 is aerogel blanket thermal insulation board or vacuum insulation panel.
When vacuum melting furnace 20 of the present utility model carries out vacuum melting, first furnace charge is put into the crucible 211 in body of heater 21, until by required while being all put into 211 li, crucible by the furnace charge of melting, close the door fire door open vacuum valve on body of heater 21 sidewalls and the switch of vavuum pump 23, allow in 23 pairs of bodies of heater 21 of vavuum pump and vacuumize, make thus vacuum in stove meet the standard of capacity environment.
Importantly, when the vacuum in stove reaches standard melting vacuum, open the switch of total pressure sensor 27 and processing controller 28.At this moment, total pressure sensor 27 just can constantly be measured the pressure of the crucible 211 of furnace charge is housed, and sends its measured all crucible pressure signal to processing controller 28.This processing controller 28 is processed all crucible pressure signals that receive from total pressure sensor 27, and pick out the highest data of the frequency of occurrences from all crucible signals that receive, and these data are decided to be to the gross weight of this crucible that furnace charge is housed 211, this processing controller 28 determines accurately after signal data, and this signal data is converted to corresponding Weight control signal, thereby according to the input value of this Weight control signal control power supply control module 22.So this processing controller 28 is controlled the switch opens of power control unit 22, control input voltage and the input power of power control unit 22 simultaneously.In this processing controller 28, be provided with three threshold ranges, its each threshold range is to having an input voltage and input power; For example, when the gross weight recording when total pressure sensor 27 belongs to first threshold scope, processing controller 28 just can be controlled corresponding input voltage and the input power of power control unit 22 this threshold range of input; When the gross weight recording when total pressure sensor 27 belongs to Second Threshold scope, processing controller 28 just can be controlled corresponding input voltage and the input power of power control unit 22 this threshold range of input; When the gross weight recording when total pressure sensor 27 belongs to the 3rd threshold range, processing controller 28 just can be controlled corresponding input voltage and the input power of power control unit 22 this threshold range of input.The setting of this processing controller 28 and this total pressure sensor 27 has greatly reduced the energy consumption of the utility model vacuum induction melting furnace.
Further, after this processing controller 28 is controlled the input voltage of this power control unit 22 well, then after 40 minutes, this processing controller device 28 just starts this partial pressure sensor.Owing to putting the magnet raw material of crucible 211 into, it is inhomogeneous bulk, put it into crucible 211 when interior, its inhomogeneities and its deviation at crucible 211 interior placement locations can cause crucible 211 bottom discontinuity, be magnet raw material while being not exclusively melted, the bottom of crucible 211 is stressed inhomogeneous all the time.While only having magnet raw material in crucible 211 to melt completely, the bottom of crucible 211 is stressed just can be evenly, and its bottom each point is stressed about the same.So the pressure of described 25 pairs of these crucibles 211 of 4 partial pressure sensors is measured in real time, thereby indirectly realize the monitoring to stove internal magnet raw material states of matter change procedure; And its own force value communication that each records 4 different points of crucible 211 bottom surfaces is constantly to this processing controller 28.This processing controller 28 is just analyzed and is processed this force value information, thereby further in fusion process, changes the power supply input value of this power control unit 22.
Particularly, first, this processing controller 28 is analyzed for the crucible 211 force value information that transmitted by 4 described partial pressure sensors 25 each time, each time, this processing controller 28 compares 4 described force value information, the pressure data that every two different information in each force value are shown subtracts each other, and draws 4 differences.Then, this processing controller 28 is according to obtaining maximum difference information in these 4 difference information; Wherein, this difference information secondary indication be magnet raw material in this crucible 211 liquid degree after melting a period of time, maximum difference is larger, represents that magnet raw material liquid degree is less, on the contrary, maximum difference is less, represents that magnet raw material approaches liquid state.Therefore, maximum difference is less, and this processing controller 28 just correspondingly reduces the power supply input value of this power control unit according to this maximum difference information.When maximum difference is during in complete liquid threshold value, this processing controller 28 is controlled these power control unit 22 powered-downs.Described partial pressure sensor 25 is the very important part of monitoring fusion process, and it realizes to melting power supply input value the data of controlling for processing controller 28 provides, and has further reduced the energy consumption of this vacuum induction melting furnace.
With respect to prior art, the utility model has reasonably been controlled its corresponding required input power supply and input power to vacuum melting furnace when the furnace charge of melting Different Weight, reduces unnecessary energy loss and relatively improves thus the melting speed of vacuum melting furnace.
The utility model is not limited to above-mentioned embodiment, if various changes of the present utility model or distortion are not departed to spirit and scope of the present utility model, within if these changes and distortion belong to claim of the present utility model and equivalent technologies scope, the utility model is also intended to comprise these changes and distortion.
Claims (5)
1. a vacuum induction melting furnace, comprises body of heater, power control unit and vavuum pump; The crucible that is provided with sensed coil winding in this body of heater with and sidewall be provided with vacuum valve; This power control unit is arranged on the outside of this body of heater and is electrically connected to this induction coil, and this vavuum pump is arranged on this body of heater outside and its import vacuum valve by pipeline and this body of heater and is tightly connected; It is characterized in that: also comprise the first thermal insulation board, total pressure sensor and processing controller;
The end face of this first thermal insulation board is fixedly connected with this crucible bottom surface; This total pressure sensor is fixedly installed on the center of gravity place of this first thermal insulation board bottom surface; This processing controller is electrically connected to this power control unit and this total pressure sensor respectively, and the crucible pressure signal that records according to this total pressure sensor of this processing controller is controlled the power supply input value of this power control unit.
2. vacuum induction melting furnace according to claim 1, is characterized in that: also comprise the second thermal insulation board and four partial pressure sensors that are electrically connected to this processing controller; This second thermal insulation board is fixedly installed between this crucible bottom surface and this first thermal insulation board; Four described partial pressure sensors are separately positioned on the place, four angles of this second thermal insulation board bottom surface, and its lower end is fixedly connected on the end face of this first thermal insulation board; The crucible pressure signal that this processing controller records according to this partial pressure sensor is further controlled the power supply input value of this power control unit and closing of this power control unit.
3. vacuum induction melting furnace according to claim 1, is characterized in that: this first thermal insulation board is aerogel blanket thermal insulation board or vacuum insulation panel.
4. vacuum induction melting furnace according to claim 2, is characterized in that: this second thermal insulation board is aerogel blanket thermal insulation board or vacuum insulation panel.
5. vacuum induction melting furnace according to claim 1, is characterized in that: between the inwall of this body of heater and outer wall, be provided with vacuum layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320782756.7U CN203881129U (en) | 2013-12-02 | 2013-12-02 | Vacuum induction melting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320782756.7U CN203881129U (en) | 2013-12-02 | 2013-12-02 | Vacuum induction melting furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203881129U true CN203881129U (en) | 2014-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320782756.7U Expired - Fee Related CN203881129U (en) | 2013-12-02 | 2013-12-02 | Vacuum induction melting furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN203881129U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737743A (en) * | 2019-01-14 | 2019-05-10 | 陶水芳 | A kind of vacuum induction melting furnace bridge formation is automatic to abolish device |
| CN109059567B (en) * | 2017-03-03 | 2019-11-15 | 平湖市超凯科技有限公司 | A kind of smelting apparatus with Waste Heat Recovery |
-
2013
- 2013-12-02 CN CN201320782756.7U patent/CN203881129U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109059567B (en) * | 2017-03-03 | 2019-11-15 | 平湖市超凯科技有限公司 | A kind of smelting apparatus with Waste Heat Recovery |
| CN109737743A (en) * | 2019-01-14 | 2019-05-10 | 陶水芳 | A kind of vacuum induction melting furnace bridge formation is automatic to abolish device |
| CN109737743B (en) * | 2019-01-14 | 2020-04-14 | 杨智萍 | Automatic bridging breaking device for vacuum induction smelting furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141015 Termination date: 20181202 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |