CN105403062A - Heating temperature control system for heating furnace - Google Patents
Heating temperature control system for heating furnace Download PDFInfo
- Publication number
- CN105403062A CN105403062A CN201510884291.XA CN201510884291A CN105403062A CN 105403062 A CN105403062 A CN 105403062A CN 201510884291 A CN201510884291 A CN 201510884291A CN 105403062 A CN105403062 A CN 105403062A
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- China
- Prior art keywords
- contactor
- normally opened
- circulating fan
- opened contact
- heater
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Classifications
-
- 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)
- Control Of Resistance Heating (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The application of the invention discloses a heating temperature control system for a heating furnace. According to the heating temperature control system, interlocking control is formed by a first contactor and a third contactor; furthermore, a coil of a second contactor is connected to a power line between a first normally open contact of the first contactor and a first air switch in parallel; a start-stop loop of of a circulating fan is connected with the normally open contact of the second contactor in series, so that when the first air switch is switched off due to faults, the coil of the second contactor loses power, and the normally open contact of the second contactor is further controlled to be switched off, so that the coil of the first contactor in the start-stop loop of the circulating fan loses power, and the second normally open contact of the first contactor in a start-stop loop of a heater is switched off; and the coil of the third contactor loses power, so that the first normally open contact of the third contactor is switched off, and the heater stops working. The problem that when the circulating fan stops working due to switch-off of the first air switch, the heater still continues working, so that the heating furnace is not heated uniformly, and the quality of a product is affected is solved.
Description
Technical field
The application relates to technical field of electric control, more particularly, relates to a kind of heating and temperature control system of heating furnace.
Background technology
Heating furnace is generally used to carry out Metal Melting during industry smelting metal.Converting electrical energy into heat energy when carrying out melting by heater, is heating furnace heat supply.General, in order to control the heating-up temperature of heating furnace, and ensure heating furnace thermally equivalent, meeting is configuration cycles blower fan simultaneously, and the wind produced by circulating fan drives heat to be heating furnace heating.
In prior art, heating furnace and circulating fan are all control separately, and the two opening is independent of each other.Present inventor studies discovery, there is certain defect in this control mode, namely when circulating fan and electric power loop disconnect because of some reason, circulating fan quits work, but heater but keeps work, this will cause the temperature in heating furnace burner hearth uneven, and product hot-spot, affects Product Process quality.
Summary of the invention
In view of this, this application provides a kind of heating and temperature control system of heating furnace, for solving the mode that existing heating furnace and circulating fan control separately, easily occurring that circulating fan quits work and heating furnace still works, cause heating furnace to be heated inequality, affect the problem of product quality.
To achieve these goals, the existing scheme proposed is as follows:
A heating and temperature control system for heating furnace, comprising:
Circulating fan, described circulating fan is connected with three phase mains by the first normally opened contact of the first contactor, the first air switch successively, further, the power line between first normally opened contact and described first air switch of described first contactor is parallel with the coil of the second contactor;
Heater, described heater is connected with three phase mains by the first normally opened contact of the 3rd contactor, the second air switch successively;
Circulating fan start and stop loop, described circulating fan start and stop circuit in series is between arbitrary phase power supply and zero line of three phase mains, and described circulating fan start and stop loop comprises the normally opened contact of the second contactor of series connection and the coil of the first contactor;
Heater start and stop loop, described heater start and stop circuit in series is between arbitrary phase power supply and zero line of three phase mains, and described heater start and stop loop comprises the second normally opened contact of the first contactor of series connection and the coil of the 3rd contactor.
Preferably, described circulating fan start and stop loop also comprises:
First gauge tap of connecting with the normally opened contact of described second contactor, for the conducting state in controlled circulation blower fan start and stop loop.
Preferably, described heater start and stop loop also comprises:
Second gauge tap of connecting with the second normally opened contact of described first contactor, for the conducting state in control heater start and stop loop.
Preferably, described second contactor is the contactor exchanging AC380V.
As can be seen from above-mentioned technical scheme; the heating and temperature control system of the heating furnace that the embodiment of the present application provides; interlocked control is formed by the first contactor and the 3rd contactor; the first normally opened contact and the second normally opened contact that control the first contactor when the coil of the first contactor obtains electric close; circulating fan is made to access three phase mains; and the heater start and stop loop at the coil place of conducting the 3rd contactor; and then the first normally opened contact controlling the 3rd contactor closes, and heater is accessed three phase mains.Ensure that the interlocking that circulating fan and heater control.
Further, by the coil of the second contactor in parallel on the power line between first normally opened contact and the first air switch of the first contactor, to connect in circulating fan start and stop loop the normally opened contact of the second contactor, make when the first air switch fault disconnects, the coil losing electricity of the second contactor, and then the normally opened contact controlling the second contactor disconnects, make the coil losing electricity of the first contactor in circulating fan start and stop loop, in heater start and stop loop, the second normally opened contact of the first contactor disconnects, the coil losing electricity of the 3rd contactor, the first normally opened contact controlling the 3rd contactor disconnects, heater quits work.Avoid the first air switch disconnect cause circulating fan to quit work time, heater still works on and causes heating furnace to be heated inequality, affects the problem of product quality.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only the embodiment of the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The heating and temperature control system electrical connection schematic diagram of Fig. 1 a kind of heating furnace disclosed in the embodiment of the present application.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present application, be clearly and completely described the technical scheme in the embodiment of the present application, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the application's protection.
See the heating and temperature control system electrical connection schematic diagram of Fig. 1, Fig. 1 a kind of heating furnace disclosed in the embodiment of the present application.
As shown in Figure 1, this system comprises:
Circulating fan M, described circulating fan M is connected with three phase mains by first normally opened contact of the first contactor KM1, the first air switch QF1 successively, further, the power line between first normally opened contact and described first air switch QF1 of described first contactor KM1 is parallel with the coil of the second contactor KM2;
Heater R, described heater R are connected with three phase mains by first normally opened contact of the 3rd contactor KM3, the second air switch QF2 successively;
Circulating fan start and stop loop, described circulating fan start and stop circuit in series is between arbitrary phase power supply (for A phase power supply in Fig. 1) and zero line of three phase mains, and described circulating fan start and stop loop comprises the normally opened contact of the second contactor KM2 of series connection and the coil of the first contactor KM1;
Heater start and stop loop; described heater start and stop circuit in series is between arbitrary phase power supply (for A phase power supply in Fig. 1) and zero line of three phase mains, and described heater start and stop loop comprises second normally opened contact of the first contactor KM1 of series connection and the coil of the 3rd contactor KM3.
Optionally, the total air switch QF3 be connected on three phase mains is further illustrated in Fig. 1.
The heating and temperature control system of the heating furnace that the embodiment of the present application provides; interlocked control is formed by the first contactor and the 3rd contactor; the first normally opened contact and the second normally opened contact that control the first contactor when the coil of the first contactor obtains electric close; circulating fan is made to access three phase mains; and the heater start and stop loop at the coil place of conducting the 3rd contactor; and then the first normally opened contact controlling the 3rd contactor closes, and heater is accessed three phase mains.Ensure that the interlocking that circulating fan and heater control.
Further, by the coil of the second contactor in parallel on the power line between first normally opened contact and the first air switch of the first contactor, to connect in circulating fan start and stop loop the normally opened contact of the second contactor, make when the first air switch fault disconnects, the coil losing electricity of the second contactor, and then the normally opened contact controlling the second contactor disconnects, make the coil losing electricity of the first contactor in circulating fan start and stop loop, in heater start and stop loop, the second normally opened contact of the first contactor disconnects, the coil losing electricity of the 3rd contactor, the first normally opened contact controlling the 3rd contactor disconnects, heater quits work.Avoid the first air switch disconnect cause circulating fan to quit work time, heater still works on and causes heating furnace to be heated inequality, affects the problem of product quality.
With further reference to Fig. 1, the present embodiment can also increase by first gauge tap of connecting with the normally opened contact of described second contactor KM2, for the conducting state in controlled circulation blower fan start and stop loop in circulating fan start and stop loop.Wherein, the first gauge tap can be with the cooperation of switch TA1 and switch QA1, and the 3rd normally opened contact of all right first contactor KM1 in parallel of switch QA1.
In like manner, the present embodiment can also increase by second gauge tap of connecting with second normally opened contact of described first contactor KM1, for the conducting state in control heater start and stop loop in heater start and stop loop.Wherein, the second gauge tap can be with the cooperation of switch TA2 and switch QA2, and second normally opened contact of all right 3rd contactor KM3 in parallel of switch QA2.
Optionally, above-mentioned second contactor KM2 can be the contactor exchanging AC380V.First to should be with the 3rd contactor electric pressure and exchanges AC220V.
Next, the operation principle of the present embodiment to system shown in Figure 1 is introduced.
Switch QA1 and QA2 belongs to upspring type switch, automatically disconnects after pressing.Be in closure state under switch TA1 and TA2 normality, air switch QF1 and QF2 normality are also in closure state.Therefore the coil of the second contactor KM2 obtains electric, and the normally opened contact controlling the second contactor KM2 closes.After manually by the QA1 that compresses switch, the coil of the first contactor KM1 obtains electric, and each normally opened contact controlling the first contactor KM1 closes, and circulating fan is accessed power supply.Further, manually by after the QA2 that compresses switch, heater start and stop loop conducting, the coil of the 3rd contactor KM3 obtains electric, and each normally opened contact controlling the 3rd contactor KM3 closes, and heater is accessed power supply.
As the first air switch QF1 because artificial origin does not close; or when fan trouble is pushed up jumping, circulating fan dead electricity, the second contactor KM2 dead electricity; the normally opened contact controlling the second contactor KM2 disconnects; circulating fan start and stop loop power-off, the first contactor KM1 coil losing electricity, each normally opened contact of the first contactor KM1 disconnects; cause heater start and stop loop power-off; 3rd contactor KM3 coil losing electricity, each normally opened contact of the 3rd contactor KM3 disconnects, and causes heater dead electricity.Therefore, achieve when the first air switch fault disconnects, circulating fan quits work, and control heater also quits work, and avoids heater to work independently causing heating furnace to be heated inequality, affects the problem of product quality.
Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the application.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from the spirit or scope of the application, can realize in other embodiments.Therefore, the application can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (4)
1. a heating and temperature control system for heating furnace, is characterized in that, comprising:
Circulating fan, described circulating fan is connected with three phase mains by the first normally opened contact of the first contactor, the first air switch successively, further, the power line between first normally opened contact and described first air switch of described first contactor is parallel with the coil of the second contactor;
Heater, described heater is connected with three phase mains by the first normally opened contact of the 3rd contactor, the second air switch successively;
Circulating fan start and stop loop, described circulating fan start and stop circuit in series is between arbitrary phase power supply and zero line of three phase mains, and described circulating fan start and stop loop comprises the normally opened contact of the second contactor of series connection and the coil of the first contactor;
Heater start and stop loop, described heater start and stop circuit in series is between arbitrary phase power supply and zero line of three phase mains, and described heater start and stop loop comprises the second normally opened contact of the first contactor of series connection and the coil of the 3rd contactor.
2. system according to claim 1, is characterized in that, described circulating fan start and stop loop also comprises:
First gauge tap of connecting with the normally opened contact of described second contactor, for the conducting state in controlled circulation blower fan start and stop loop.
3. system according to claim 1, is characterized in that, described heater start and stop loop also comprises:
Second gauge tap of connecting with the second normally opened contact of described first contactor, for the conducting state in control heater start and stop loop.
4. system according to claim 1, is characterized in that, described second contactor is the contactor exchanging AC380V.
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 true CN105403062A (en) | 2016-03-16 |
| CN105403062B 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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| Country | Link |
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| CN (1) | CN105403062B (en) |
Cited By (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 |
| 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 |
| 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 |
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| 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 |
| CN103955246A (en) * | 2014-05-12 | 2014-07-30 | 珠海格力电器股份有限公司 | Electric heater control system and method |
| CN104133508A (en) * | 2014-08-04 | 2014-11-05 | 卡尔迈耶（中国）有限公司 | Lathe bed and disc chuck temporary heating control device for warp knitting machine |
| 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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2015
- 2015-12-04 CN CN201510884291.XA patent/CN105403062B/en active Active
Patent Citations (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 |
| CN103955246A (en) * | 2014-05-12 | 2014-07-30 | 珠海格力电器股份有限公司 | Electric heater control system and method |
| CN104133508A (en) * | 2014-08-04 | 2014-11-05 | 卡尔迈耶（中国）有限公司 | Lathe bed and disc chuck temporary heating control device for warp knitting machine |
| 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 |
Cited By (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 |
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| Publication number | Publication date |
|---|---|
| CN105403062B (en) | 2017-08-08 |
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