CN105403062B - A kind of heating and temperature control system of heating furnace - Google Patents
A kind of heating and temperature control system of heating furnace Download PDFInfo
- Publication number
- CN105403062B CN105403062B CN201510884291.XA CN201510884291A CN105403062B CN 105403062 B CN105403062 B CN 105403062B CN 201510884291 A CN201510884291 A CN 201510884291A CN 105403062 B CN105403062 B CN 105403062B
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- Prior art keywords
- contactor
- normally opened
- opened contact
- circulating fan
- heater
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/13—Smelting
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Control Of Resistance Heating (AREA)
Abstract
This application discloses a kind of heating and temperature control system of heating furnace, interlocked control is constituted by first contactor and the 3rd contactor, further, pass through the coil of second contactor in parallel on the power line between the first normally opened contact and the first air switch of first contactor, the normally opened contact for second contactor of being connected on circulating fan start and stop loop, so that when the first air switch failure disconnects, the coil losing electricity of second contactor, and then control the normally opened contact of second contactor to disconnect, so that in circulating fan start and stop loop first contactor coil losing electricity, the second normally opened contact of first contactor disconnects in heater start and stop loop, the coil losing electricity of 3rd contactor, the first normally opened contact of the 3rd contactor is controlled to disconnect, heater is stopped.Avoid when the disconnection of the first air switch causes circulating fan to be stopped, heater continues to work and causes the heated inequality of heating furnace, the problem of influenceing product quality.
Description
Technical field
The application is related to technical field of electric control, more specifically to a kind of heating and temperature control system of heating furnace
System.
Background technology
It is general during industrial smelting metal to carry out Metal Melting using heating furnace.Electric energy is turned by heater when carrying out melting
Heat energy is changed to, is heating furnace heat supply.General, in order to control the heating-up temperature of heating furnace, and guarantee heating furnace thermally equivalent,
Circulating fan can be configured simultaneously, and the wind produced by circulating fan drives heat to be heating stove heat.
In the prior art, heating furnace is individually controlled with circulating fan, and the two opening is independent of each other.The application
Inventor's research finds that this control mode has certain defect, i.e., in circulating fan and electric power loop because some reasons
And when disconnecting, circulating fan is stopped, but heater but keeps work, and this will cause the temperature liter in heating furnace burner hearth
Warm uneven, product hot-spot influences Product Process quality.
The content of the invention
In view of this, this application provides a kind of heating and temperature control system of heating furnace, for solving existing heating furnace
The mode individually controlled with circulating fan, easily occurs that circulating fan is stopped and heating furnace still works, cause heating furnace by
It is hot uneven, the problem of influenceing product quality.
To achieve these goals, it is proposed that scheme it is as follows：
A kind of heating and temperature control system of heating furnace, including：
Circulating fan, the circulating fan pass sequentially through the first normally opened contact of first contactor, the first air switch with
Three phase mains is connected, also, the power supply between the first normally opened contact and first air switch of the first contactor
The coil of second contactor is parallel with line；
Heater, the heater passes sequentially through the first normally opened contact, the second air switch and three-phase of the 3rd contactor
Power supply is connected；
Circulating fan start and stop loop, any phase power supply and zero line of the circulating fan start and stop circuit in series in three phase mains
Between, the circulating fan start and stop loop includes the normally opened contact and the coil of first contactor of the second contactor of series connection；
Heater start and stop loop, the heater start and stop circuit in series three phase mains any phase power supply and zero line it
Between, the heater start and stop loop includes the second normally opened contact and the coil of the 3rd contactor of the first contactor of series connection.
Preferably, the circulating fan start and stop loop also includes：
The first controlling switch connected with the normally opened contact of the second contactor, for controlling circulating fan start and stop loop
Conducting state.
Preferably, the heater start and stop loop also includes：
The second controlling switch connected with the second normally opened contact of the first contactor, for controlling heater start and stop to return
The conducting state on road.
Preferably, the second contactor is exchange AC380V contactor.
It can be seen from above-mentioned technical scheme that, the heating and temperature control system for the heating furnace that the embodiment of the present application is provided,
Interlocked control is constituted by first contactor and the 3rd contactor, first contactor is controlled when the coil of first contactor obtains electric
First normally opened contact and the second normally opened contact closure so that circulating fan accesses three phase mains, and turns on the 3rd contactor
Heater start and stop loop where coil, and then the first normally opened contact closure of the 3rd contactor is controlled, heater is accessed three
Phase power supply.It ensure that the interlocking that circulating fan is controlled with heater.
Further, by parallel on the power line between the first normally opened contact and the first air switch of first contactor
The coil of second contactor, the normally opened contact for second contactor of being connected on circulating fan start and stop loop so that when the first air
When switch fault disconnects, the coil losing electricity of second contactor, and then control the normally opened contact of second contactor to disconnect so that circulation
The second normally opened contact of first contactor breaks in the coil losing electricity of first contactor in blower fan start and stop loop, heater start and stop loop
Open, the coil losing electricity of the 3rd contactor, the first normally opened contact of the 3rd contactor of control disconnects, and heater is stopped.Avoid
The first air switch disconnect cause the circulating fan to be stopped when, heater continues to work and causes heating furnace heated not
, the problem of influenceing product quality.
Brief description of the drawings
, below will be to embodiment or existing in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of application, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is electrically connected schematic diagram for a kind of heating and temperature control system of heating furnace disclosed in the embodiment of the present application.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only some embodiments of the present application, rather than whole embodiments.It is based on
Embodiment in the application, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of the application protection.
Referring to Fig. 1, Fig. 1 shows for a kind of heating and temperature control system electrical connection of heating furnace disclosed in the embodiment of the present application
It is intended to.
As shown in figure 1, the system includes：
Circulating fan M, the circulating fan M pass sequentially through first contactor KM1 the first normally opened contact, the first air and opened
QF1 is closed to be connected with three phase mains, also, in the first normally opened contact and first air switch of the first contactor KM1
Second contactor KM2 coil is parallel with power line between QF1；
Heater R, the heater R pass sequentially through the 3rd contactor KM3 the first normally opened contact, the second air switch
QF2 is connected with three phase mains；
Circulating fan start and stop loop, any phase power supply (in Fig. 1 of the circulating fan start and stop circuit in series in three phase mains
By taking A phase power supplys as an example) and zero line between, the circulating fan start and stop loop include series connection second contactor KM2 it is normally opened touch
The coil of point and first contactor KM1；
Heater start and stop loop, the heater start and stop circuit in series three phase mains any phase power supply (with A in Fig. 1
Exemplified by phase power supply) and zero line between, the heater start and stop loop include series connection first contactor KM1 the second normally opened contact
With the 3rd contactor KM3 coil.
Optionally, the total air switch QF3 being connected on three phase mains is further illustrated in Fig. 1.
The heating and temperature control system for the heating furnace that the embodiment of the present application is provided, by first contactor and the 3rd contactor structure
Into interlocked control, the first normally opened contact and the second normally opened contact of first contactor are controlled when the coil of first contactor obtains electric
Closure so that circulating fan accesses three phase mains, and turns on the heater start and stop loop where the coil of the 3rd contactor, enters
And the first normally opened contact closure of the 3rd contactor is controlled, heater is accessed into three phase mains.It ensure that circulating fan and heating
The interlocking of device control.
Further, by parallel on the power line between the first normally opened contact and the first air switch of first contactor
The coil of second contactor, the normally opened contact for second contactor of being connected on circulating fan start and stop loop so that when the first air
When switch fault disconnects, the coil losing electricity of second contactor, and then control the normally opened contact of second contactor to disconnect so that circulation
The second normally opened contact of first contactor breaks in the coil losing electricity of first contactor in blower fan start and stop loop, heater start and stop loop
Open, the coil losing electricity of the 3rd contactor, the first normally opened contact of the 3rd contactor of control disconnects, and heater is stopped.Avoid
The first air switch disconnect cause the circulating fan to be stopped when, heater continues to work and causes heating furnace heated not
, the problem of influenceing product quality.
With further reference to Fig. 1, the present embodiment can also increase and the second contactor in circulating fan start and stop loop
First controlling switch of KM2 normally opened contact series connection, the conducting state for controlling circulating fan start and stop loop.Wherein, first
Controlling switch can be to switch TA1 and switch QA1 cooperation, and switch QA1 can be with the of first contactor KM1 in parallel
Three normally opened contacts.
Similarly, the present embodiment can also increase in heater start and stop loop with it is the second of the first contactor KM1 normally opened
Second controlling switch of contact series, the conducting state for controlling heater start and stop loop.Wherein, the second controlling switch can be with
Be with switch TA2 and switch QA2 cooperation, and switch QA2 can be with the 3rd contactor KM3 of parallel connection the second normally opened contact.
Optionally, above-mentioned second contactor KM2 can be the contactor for exchanging AC380V.First and the 3rd contactor voltage
Grade should be exchange AC220V.
Next, the operation principle of system shown in Figure 1 is introduced the present embodiment.
Switch QA1 and QA2 belongs to upspring type switch, is disconnected automatically after pressing.Switch under TA1 and TA2 normalities in closure
State, air switch QF1 and QF2 normality is also at closure state.Therefore second contactor KM2 coil obtains electric, control second
Contactor KM2 normally opened contact closure.When manually by compress switch QA1 after, first contactor KM1 coil obtains electric, control first
Contactor KM1 each normally opened contact closure, power supply is accessed by circulating fan.Further, manually by the QA2 that compresses switch after, heating
Device start and stop loop is turned on, and the 3rd contactor KM3 coil obtains electric, the 3rd contactor KM3 of control each normally opened contact closure, will
Heater accesses power supply.
As the first air switch QF1 because artificial origin does not close, or fan trouble is pushed up when jumping, and circulating fan loses
Electricity, second contactor KM2 dead electricity, control second contactor KM2 normally opened contact disconnects, the power-off of circulating fan start and stop loop, the
One contactor KM1 coil losing electricities, first contactor KM1 each normally opened contact disconnects, and causes heater start and stop loop to power off, the
Three contactor KM3 coil losing electricities, the 3rd contactor KM3 each normally opened contact disconnects, and causes heater dead electricity.Therefore, realize
When the first air switch failure disconnects, circulating fan is stopped, and controls heater to be also stopped, it is to avoid heater
Work independently the problem of causing the heated inequality of heating furnace, influence product quality.
Finally, in addition it is also necessary to explanation, herein, such as first and second or the like relational terms be used merely to by
One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operation
Between there is any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering including for nonexcludability, so that process, method, article or equipment including a series of key elements not only include that
A little key elements, but also other key elements including being not expressly set out, or also include be this process, method, article or
The intrinsic key element of equipment.In the absence of more restrictions, the key element limited by sentence "including a ...", is not arranged
Except also there is other identical element in the process including the key element, method, article or equipment.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Between the difference of embodiment, each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or use the application.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can in other embodiments be realized in the case where not departing from spirit herein or scope.Therefore, the application
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (4)
1. a kind of heating and temperature control system of heating furnace, it is characterised in that including：
Circulating fan, the circulating fan passes sequentially through the first normally opened contact, the first air switch and three-phase of first contactor
Power supply is connected, also, on the power line between the first normally opened contact and first air switch of the first contactor
It is parallel with the coil of second contactor；
Heater, the heater passes sequentially through the first normally opened contact, the second air switch and three phase mains of the 3rd contactor
Connection；
Circulating fan start and stop loop, the circulating fan start and stop circuit in series three phase mains any phase power supply and zero line it
Between, the circulating fan start and stop loop includes the normally opened contact and the coil of first contactor of the second contactor of series connection；
Heater start and stop loop, the heater start and stop circuit in series is between any phase power supply and zero line of three phase mains, institute
Stating heater start and stop loop includes the second normally opened contact and the coil of the 3rd contactor of first contactor of series connection.
2. system according to claim 1, it is characterised in that the circulating fan start and stop loop also includes：
The first controlling switch connected with the normally opened contact of the second contactor, for controlling leading for circulating fan start and stop loop
Logical state.
3. system according to claim 1, it is characterised in that the heater start and stop loop also includes：
The second controlling switch connected with the second normally opened contact of the first contactor, for controlling heater start and stop loop
Conducting state.
4. system according to claim 1, it is characterised in that the second contactor is exchange AC380V contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510884291.XA CN105403062B (en) | 2015-12-04 | 2015-12-04 | A kind of heating and temperature control system of heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510884291.XA CN105403062B (en) | 2015-12-04 | 2015-12-04 | A kind of heating and temperature control system of heating furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105403062A CN105403062A (en) | 2016-03-16 |
| CN105403062B true CN105403062B (en) | 2017-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510884291.XA Active CN105403062B (en) | 2015-12-04 | 2015-12-04 | A kind of heating and temperature control system of heating furnace |
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| CN (1) | CN105403062B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108731262A (en) * | 2018-08-07 | 2018-11-02 | 镇江力帆防爆电器有限公司 | Marine explosion-proof self-control safety type electric heater for pipeline |
| CN109710004A (en) * | 2018-12-07 | 2019-05-03 | 天津津航计算技术研究所 | A kind of temperature-control circuit applied to airborne equipment |
| CN109612266A (en) * | 2018-12-28 | 2019-04-12 | 株洲晨昕中高频设备有限公司 | A kind of vacuum furnace automatic control system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006284156A (en) * | 2005-04-05 | 2006-10-19 | Matsushita Electric Ind Co Ltd | Firing furnace |
| CN202649730U (en) * | 2012-05-30 | 2013-01-02 | 安徽理士电源技术有限公司 | Oven control circuit |
| CN103955246B (en) * | 2014-05-12 | 2016-03-02 | 珠海格力电器股份有限公司 | Electric heater control system and method |
| CN104133508B (en) * | 2014-08-04 | 2015-12-02 | 卡尔迈耶（中国）有限公司 | Tricot machine lathe bed and the interim heating control apparatus of floral disc |
| CN205209268U (en) * | 2015-12-04 | 2016-05-04 | 西南铝业（集团）有限责任公司 | Dual interlocking heating temperature control system of heating furnace |
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| CN105403062A (en) | 2016-03-16 |
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