CN206772013U - A kind of safety leak-proof magnetic Medium frequency induction steel shell furnace - Google Patents
A kind of safety leak-proof magnetic Medium frequency induction steel shell furnace Download PDFInfo
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- CN206772013U CN206772013U CN201720440234.7U CN201720440234U CN206772013U CN 206772013 U CN206772013 U CN 206772013U CN 201720440234 U CN201720440234 U CN 201720440234U CN 206772013 U CN206772013 U CN 206772013U
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- yoke
- crucible
- binding post
- faraday
- ring
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- 230000006698 induction Effects 0.000 title claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 17
- 239000010959 steel Substances 0.000 title claims abstract description 17
- 238000005259 measurement Methods 0.000 claims abstract description 13
- 230000005674 electromagnetic induction Effects 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 230000005611 electricity Effects 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims 1
- 239000010935 stainless steel Substances 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000010304 firing Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
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- 238000001764 infiltration Methods 0.000 description 2
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- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
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- 239000000498 cooling water Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
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- 230000000171 quenching effect Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a kind of safety leak-proof magnetic Medium frequency induction steel shell furnace, belong to firing equipment field, it includes steelframe, crucible is installed in steelframe, the periphery of crucible sets furnace lining, electromagnetic induction coil is set on furnace lining, and the periphery of electromagnetic induction coil is arranged yoke, and bell is set on the steelframe above crucible；It is characterised by：The top of yoke sets faraday's ring, faraday's ring be located at yoke top away from bell lower end distance 1/3rd at, faraday's ring is close to yoke setting；First binding post of connection crucible internal walls is set outside crucible；Lateral electrode is set outside furnace lining, lateral electrode connects the second binding post, dc source is connected between second binding post and the first binding post and forms measure loop, measurement resistance is set in measure loop, measure resistance connection alarm control circuit, when alarm control circuit detection measures the voltage signal of resistance and is higher than given threshold value, alarm control circuit sends alarm signal.This heating furnace reduces leakage field, and is hunted leak by current signal.
Description
Technical field
The utility model belongs to firing equipment field, and in particular to a kind of safety leak-proof magnetic Medium frequency induction steel shell furnace.
Background technology
Medium Frequency Induction Heating Furnace is due to firing rate is fast, production efficiency is high, operating environment is good, the de- charcoal of oxidation is few and section
The advantages of material saving, it is widely used in the PROCESS FOR TREATMENT such as welding, annealing, quenching, diathermanous, covering automobile, zero, motorcycle
The industries such as part, railway track, Aero-Space, weapons manufacture, machine-building, electrical equipment manufacture and specialty metal processing.
Medium Frequency Induction Heating Furnace be it is a hold molten metal material to be heated in crucible, crucible periphery sets stove
Lining, then in the periphery coiling of furnace lining, by intermediate frequency power supply to coil electricity, carried out using the electromagnetic induction principle of coil
Heat the device of fusing.The box hat of body of heater is generally made up of steelframe, yoke and bell positioned at steelframe top, and yoke is used for guiding
The magnetic field trend of induction coil.During actual use, often due to various reasons form crackle in furnace lining and caused
Leak accident.If this accident can not be found in time, the lighter damages induction coil and the insulating barrier of yoke, and severe one makes sensing
The copper pipe of coil is burnt out, and the cooling water of high-temperature metal liquation and induction coil is in contact, and causes serious equipment breakdown, or even draw
Blast is played, jeopardizes personal safety.
In addition, in the course of the work, the magnetic field of yoke upper end scattering causes box hat upper end to generate heat to equipment always, lowers
The service life of box hat；Portion of energy is also have lost simultaneously, causes energy waste.
The content of the invention
Technical problem to be solved in the utility model is to provide a kind of safety leak-proof magnetic Medium frequency induction steel shell furnace, is reducing
While energy waste, automatic detection current signal is simultaneously alarmed.
In order to solve the above technical problems, the technical solution of the utility model is：Invent a kind of safety leak-proof magnetic Medium frequency induction
Steel shell furnace, including steelframe, crucible is provided with steelframe, and the periphery of crucible sets furnace lining, sets electromagnetic induction coil on furnace lining, electricity
The periphery of magnetic induction coil is arranged yoke, and bell is set on the steelframe above crucible；It is characterized in that：The top of yoke sets method
Draw ring, faraday's ring be located at yoke top away from bell lower end distance 1/3rd at, faraday's ring is set close to yoke；
First binding post is set outside the crucible, and the first binding post connects the inwall of crucible；Lateral electrode, side are set outside furnace lining
Electrode connects the second binding post, and dc source is connected between the second binding post and the first binding post and forms measure loop, is detected back
Measurement resistance, measurement resistance connection alarm control circuit are set in road, alarm control circuit detects the voltage signal of measurement resistance,
When voltage signal is higher than given threshold value, alarm control circuit sends alarm signal.
Preferably, milliampere level ammeter is in series with the measure loop.
Preferably, faraday's ring is coaxially disposed with yoke.
Preferably, the internal diameter of faraday's ring is more than the external diameter of yoke.
Preferably, voltage comparator is set in the alarm control circuit, and the input connection of voltage comparator gives
Circuit, another input connection measurement resistance, the output end connection relay of voltage comparator, the contact of relay provides switch
Measure alarm signal.
Preferably, the lateral electrode is stainless (steel) wire.
Preferably, earth stud is additionally provided with, first binding post or the second binding post are connected by wire and be grounded
Bolt.
Compared with prior art, the beneficial effects of the utility model are：
1st, because the top of yoke is provided with faraday's ring, and faraday's ring is also referred to as " short-circuited turn " or " short circuit
Ring ", it with yoke in magnetic field interaction, can change and revolt the direction of the magnetic line of force in yoke, by magnetic field bounce back sense
The inside of coil is answered, acts on and is melt compound, accelerates the burn-off rate of material；Reduce effect of the magnetic line of force to bell simultaneously,
It is avoided by heat ageing, beneficial to its service life of extension；And the current loop in increased detection crucible and outside furnace lining can lead to
The size of overcurrent signal judges whether furnace lining and crucible have leakage phenomenon, avoid the generation of accident.
2nd, because faraday's ring and yoke are coaxially disposed, and the internal diameter of faraday's ring is more than the external diameter of yoke, can increase
The magnetic flux of faraday's ring bounce back, further speed up the burn-off rate of material.
3rd, due to being in series with milliampere level ammeter in measure loop, detection can intuitively be read by milliampere level ammeter
Current value in loop, to judge whether the insulating properties between furnace lining outer wall and crucible internal walls are intact.
4th, the size of set-point and detected value is judged by voltage comparator, so as to control whether output alarm signal, skill
Art is ripe, stable performance, is easy to implement.
5th, using stainless (steel) wire as lateral electrode, the consumptive material of saving lateral electrode while area of detection is expanded.
6th, to be connected because there is provided earth stud, the first binding post or the second binding post by wire with earth stud
Connect, improve the security of measure loop.
Brief description of the drawings
Fig. 1 is block schematic illustration of the present utility model；
Fig. 2 is internal structure schematic diagram of the present utility model；
Fig. 3 is electrical schematic diagram of the present utility model.
Marked in figure：1st, bell；2nd, faraday's ring；3rd, steelframe；4th, yoke；5th, furnace lining；6th, crucible；7th, lateral electrode；8th, in
Heart electrode；9th, the first binding post；10th, the second binding post；11st, earth stud；12nd, measure loop；13rd, alarm control circuit；14、
Given circuit；15th, milliampere level ammeter；16th, electromagnetic induction coil.
Embodiment
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
In the utility model, the side that will be close to central electrode 8 is defined as inner side, correspondingly will be far from central electrode 8
Opposite side is defined as outside；When the utility model is in into use state, lower end is defined as close to the one end on ground, and remotely
The one end in face is defined as upper end.
As depicted in figs. 1 and 2, the utility model is provided with crucible 6 in steelframe 3, is set on the steelframe 3 of the top of crucible 6
Bell 1.The periphery of crucible 6 is enclosed with furnace lining 5, and electromagnetic induction coil 16, the periphery set of electromagnetic induction coil 16 are wound with furnace lining 5
If yoke 4, yoke 4, steelframe 3 and bell 1 collectively form box hat of the present utility model.The top of yoke 4 sets faraday's ring 2,
Faraday's ring 2 is coaxially disposed with yoke 4, and its internal diameter is more than the external diameter of yoke 4.Faraday's ring 2 is located at the top of yoke 4 away from bell
At 1/3rd of 1 lower end distance, faraday's ring 2 is set close to yoke 4.This faraday's ring 2 be also referred to as " short-circuited turn " or
Person's " short-circuited conducting sleeve ", it with yoke 4 in magnetic field interaction, can change and revolt the direction of the magnetic line of force in yoke 4, by magnetic field
The inside of bounce back induction coil, material to be melted in crucible 6 is acted on, accelerate the burn-off rate of material；Reduce simultaneously
Effect of the magnetic line of force to bell 1, it is avoided by heat ageing, beneficial to its service life of extension.
The utility model also sets the first binding post 9 outside crucible 6, and the first binding post 9 connects the inwall of crucible 6, crucible 6
Interior metalliferous material connects the first binding post 9 as central electrode 8, such central electrode 8；Stainless (steel) wire is set outside furnace lining 5, no
The steel mesh that becomes rusty connects the second binding post 10 as the lateral electrode 7 around furnace lining 5, lateral electrode 7.As shown in figure 3, the He of the second binding post 10
Dc source is connected between first binding post 9 and forms measure loop 12, measurement resistance R, measurement resistance R are set in measure loop 12
Connect alarm control circuit 13, the detection measurement resistance of alarm control circuit 13 R voltage signal, when voltage signal is higher than given threshold
During value, alarm control circuit 13 sends alarm signal.Specifically voltage comparator A, voltage ratio are provided with alarm control circuit 13
The output end connection of input connection given circuit 14, the connection measurement of another input resistance R, voltage comparator A compared with device A
Relay K, relay K contact provide switching value alarm signal.
In order that above-mentioned detection more intuitively with safety, the utility model also connected in measure loop 12 milliampere level electricity
Flow table 15, the current value in measure loop 12 can be intuitively read by milliampere level ammeter 15, with judge the outer wall of furnace lining 5 and
Whether the insulating properties between the inwall of crucible 6 are intact.And earth stud 11 is provided with, the first binding post 9 is connected by wire and is grounded
Bolt 11, improve the security of measure loop 12.
In use, the metalliferous material in the magnetic force line cutting crucible 6 of electromagnetic induction coil 16, faraday's ring 2 changes yoke 4
The magnetic line of force direction of end, by its bounce back crucible 6, further speed up the fusing of metalliferous material, molten metal material shape
Into central electrode 8, the resistance value between being measured by the electric current in measure loop 12 outside furnace lining 5 and in crucible 6, if resistance
Value is very big, and insulating properties are good between illustrating the two, in the absence of Seepage；If resistance value drastically declines, illustrate the outer wall of furnace lining 5
There is the infiltration of molten metal material between the inwall of crucible 6, because infiltration reduces resistance, in addition two binding posts are short-circuit；This
When measure in resistance R because electric current increases, increase its pressure drop, treat that its voltage drop value reaches the given threshold value of alarm control circuit 13
When, alarm control circuit 13 sends alarm signal, and then the control signal as heating furnace operation, avoids dangerous situation.
It is described above, only it is preferred embodiment of the present utility model, is not that other forms are made to the utility model
Limitation, any person skilled in the art is combined, changes or retrofits possibly also with the technology contents of the disclosure above
It is equivalent embodiment of the present utility model.But it is every without departing from the content of the technical scheme of the utility model, it is new according to this practicality
Any simple modification, equivalent variations and the remodeling that the technical spirit of type is made to above example, still fall within the utility model skill
The protection domain of art scheme.
Claims (7)
1. a kind of safety leak-proof magnetic Medium frequency induction steel shell furnace, including steelframe, crucible is installed in steelframe, the periphery of crucible sets stove
Lining, sets electromagnetic induction coil on furnace lining, and the periphery of electromagnetic induction coil is arranged yoke, and stove is set on the steelframe above crucible
Lid；It is characterized in that：The top of yoke sets faraday's ring, and faraday's ring is located at three points of yoke top away from bell lower end distance
One of place, faraday's ring close to yoke set；
First binding post is set outside the crucible, and the first binding post connects the inwall of crucible；Lateral electrode, lateral electrode are set outside furnace lining
The second binding post is connected, dc source is connected between the second binding post and the first binding post and forms measure loop, in measure loop
Measurement resistance is set, measurement resistance connection alarm control circuit, the voltage signal of alarm control circuit detection measurement resistance, works as electricity
When pressure signal is higher than given threshold value, alarm control circuit sends alarm signal.
2. according to the safety leak-proof magnetic Medium frequency induction steel shell furnace described in claim 1, it is characterised in that：Gone here and there in the measure loop
It is associated with milliampere level ammeter.
3. according to the safety leak-proof magnetic Medium frequency induction steel shell furnace described in claim 2, it is characterised in that：Faraday's ring and magnetic
Yoke is coaxially disposed.
4. according to the safety leak-proof magnetic Medium frequency induction steel shell furnace described in claim 3, it is characterised in that：Faraday's ring it is interior
Footpath is more than the external diameter of yoke.
5. according to any described safety leak-proof magnetic Medium frequency induction steel shell furnace of Claims 1-4, it is characterised in that：The alarm
Voltage comparator, the input connection given circuit of voltage comparator, the connection measurement of another input are set in control circuit
Resistance, the output end connection relay of voltage comparator, the contact of relay provides switching value alarm signal.
6. according to the safety leak-proof magnetic Medium frequency induction steel shell furnace described in claim 5, it is characterised in that：The lateral electrode is stainless
Steel mesh.
7. according to the safety leak-proof magnetic Medium frequency induction steel shell furnace described in claim 6, it is characterised in that：It is additionally provided with ground connection spiral shell
Bolt, first binding post or the second binding post connect earth stud by wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720440234.7U CN206772013U (en) | 2017-04-25 | 2017-04-25 | A kind of safety leak-proof magnetic Medium frequency induction steel shell furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720440234.7U CN206772013U (en) | 2017-04-25 | 2017-04-25 | A kind of safety leak-proof magnetic Medium frequency induction steel shell furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206772013U true CN206772013U (en) | 2017-12-19 |
Family
ID=60635733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720440234.7U Expired - Fee Related CN206772013U (en) | 2017-04-25 | 2017-04-25 | A kind of safety leak-proof magnetic Medium frequency induction steel shell furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206772013U (en) |
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2017
- 2017-04-25 CN CN201720440234.7U patent/CN206772013U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171219 |