CN203586277U - Electronic control device for ignition in kiln - Google Patents
Electronic control device for ignition in kiln Download PDFInfo
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- CN203586277U CN203586277U CN201320650623.4U CN201320650623U CN203586277U CN 203586277 U CN203586277 U CN 203586277U CN 201320650623 U CN201320650623 U CN 201320650623U CN 203586277 U CN203586277 U CN 203586277U
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- valve
- burner
- normally closed
- stove
- auxiliary contact
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Abstract
The utility model provides an electronic control device for ignition in a kiln. A PLC (programmable logic controller) is provided with a control module and a flame monitoring module, wherein the control module comprises a time delay relay; when ignition fails in a preset time period, the time delay relay delays an action, an auxiliary contact of a contactor is changed to normally open from normally closed, an auxiliary contact recovers normally open state, then an intermediate relay coil loses power, so that a burner rapid cut-off valve coil loses power and the valve is switched off immediately, and gas is cut off from entering a combustion chamber; and when ignition succeeds in the preset time period, the auxiliary contact is changed to normally closed from normally open, the intermediate relay coil gains power and works, the burner rapid cut-off valve coil gains power due to the fact that the auxiliary contact is changed to normally closed from normally open, the valve is switched on immediately, and gas is supplied to the combustion chamber. According to the electronic control device for ignition in the kiln, the operation status of a burner can be reflected in real time in the PLC and fault points can be determined rapidly, so that fast processing, production recovery and reduction of influence on lime production and product quality are facilitated.
Description
Technical field
The utility model relates to a kind of igniting electric control gear, particularly relates to a kind of stove igniting electric control gear.
Background technology
Stove is the equipment for the production of metallurgy lime, mainly for the production of high-quality active lime, to meet steel-making needs.Lime stone is transported to kiln top by monobucket winch hoister, through hopper, sealed gate and revolving top, enters in kiln.As shown in Figure 1, kiln comprises inner core 1a, lower inner core 1b, upper gap bridge 1c, lower gap bridge 1d, upper burner 2a, lower burner 2b, upper burner 2a, lower burner 2b are two-layerly evenly staggeredly arranged along upper and lower in kiln, every layer of burner 2a, 2b have six cylindrical combustion chambers, each combustion chamber have one with refractory material laying, from kiln hood, extend to the arch bridge of inner core 1b.High-temperature gas from combustion chamber out, the space forming below through arch bridge enters the bed of material.Two-layer burner is divided into two burning zones by kiln, and upper burning zone is adverse current, and lower burning zone is and flows.Material in kiln from top to bottom motion, air-flow by combustion chamber against logistics campaign, finally and flow calcination area by material (lime stone) calcine.The key component of whole control system is combustion system, is directly connected to output and the quality of the finished product of producing.The control system of existing gas control box comprises traditional relay 30K2～30K6, timer 30S3 and contactor 20K1, and as shown in Figure 2, its function is few and be difficult to realize complicated control; By hardwired logic control circuit complexity, due to wiring complexity, reliability is undesirable and easily break down, and original wiring and control system have been difficult to meet the demands, improve difficulty large.
Summary of the invention
The utility model object is to provide a kind of stove igniting electric control gear, can in programmable logic controller (PLC) (PLC) system, reflect burner operation conditions in real time, and the fast localization of faults, to fast processing, resume production and reduce the impact on lime production and product quality.
Stove igniting electric control gear of the present utility model, comprise sensor, multiple contactors, auxiliary reclay, delayer and programmable logic controller (PLC) (PLC), described PLC is provided with control module and flame monitoring module, described flame monitoring module is connected with described control module, described multiple contactor is normally open contactor, when sensor flame detection signal normal, the contact signal of described flame monitoring module by often open change into normally closed, when sensor detects that flare up fire is undesired, the contact signal of flame monitoring module recovers often to open, by the contact signal of described flame monitoring module, sending into described control module makes the valve open of burner repid cut-off valve and closes, described control module comprises time-delay relay, has normally closed delayed contact, and when burner is lighted a fire, reserved a period of time of described time-delay relay obtains electric work to guarantee auxiliary reclay, makes burner fast shut-off valve coil obtain electric and makes valve open, when no success of igniting in Preset Time section, time-delay relay deferred action, the auxiliary contact of contactor are left from normally closed often becoming, auxiliary contact recover often to open, auxiliary reclay coil losing electricity, so that burner repid cut-off valve coil losing electricity and valve is closed immediately enters combustion chamber to cut off combustion gas, when lighting a fire successfully in Preset Time section, auxiliary contact become normally closedly from often opening, and the coil of auxiliary reclay obtains electric work, make its auxiliary contact become normally closed and that burner fast shut-off valve coil is obtained is electric from often opening, and valve is opened to combustion chamber immediately for combustion gas.
Between described burner repid cut-off valve and stove, be provided with control valve, to regulate the valve opening of supplying with stove combustion gas.
Described stove igniting electric control gear also comprises: start button, change-over switch and button ignition switch.
The beneficial effects of the utility model are, can be in lime burning be produced to the reflection in time of the production status in stove with control, the localization of faults fast, accomplishes fast processing, resumes production, and reduces producing and the impact of output and quality.
Accompanying drawing explanation
Fig. 1 is the production technology schematic diagram of original stove lime calcining;
Fig. 2 is the schematic diagram of the combustion control system of original stove lime calcining;
Fig. 3 is burner control circuit Fig. 1 of the stove igniting electric control gear of an embodiment of the utility model;
Fig. 4 is burner control circuit Fig. 2 of the stove igniting electric control gear of an embodiment of the utility model;
Fig. 5 is burner control circuit Fig. 3 of the stove igniting electric control gear of an embodiment of the utility model;
Fig. 6 is the layout drawing of the stove igniting electric control gear of an embodiment of the utility model;
Fig. 7 is the block diagram that the stove igniting electric control gear of an embodiment of the utility model carries out flame monitoring.
The specific embodiment
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent, below in conjunction with accompanying drawing, the specific embodiment of the present utility model is elaborated.First it should be noted that, the utility model is not limited to the following specific embodiment, the spirit that those skilled in the art should embody from following embodiment is understood the utility model, and each technical term can be done the most wide in range understanding based on Spirit Essence of the present utility model.
The stove igniting electric control gear of an embodiment of the utility model, comprises sensor (not shown), multiple contactor 20K1～20K5(Fig. 3), multiple auxiliary reclay 30K2～30K6(Fig. 4), delayer 20S2, start button 20S1, change-over switch 30S3, button ignition switch 30S1 and programmable logic controller (PLC) (PLC) (not shown).PLC is provided with control module (not shown) and flame monitoring module 30A2(Fig. 4), flame monitoring module 30A2 is connected with control module.Multiple contactors are normally open contactor.As shown in Figure 7, the course of work of flame monitoring module comprises: when sensor flame detection signal normally has flame, the contact 1J signal of flame monitoring module by often open change into normally closed, when sensor detects that flare up fire is undesired during without flame, the contact 1J signal of flame monitoring module recovers often to open, and sends into described control module make the valve open of burner repid cut-off valve and close by the signal of contact.Control module comprises time-delay relay 30K1, has normally closed delayed contact 2J.Further as shown in Figure 7, when burner is lighted a fire, reserved a period of time of time-delay relay 30K1 obtains electric work to guarantee auxiliary reclay 30K2, makes burner fast shut-off valve coil obtain electric and makes valve open; When no success of igniting in Preset Time section, time-delay relay 30K1 deferred action, the auxiliary contact of time-delay relay 30K1 are left from normally closed often becoming, make auxiliary contact 1J recover often to open, auxiliary reclay 30K2 coil losing electricity, so that burner repid cut-off valve coil losing electricity and valve is closed immediately enters combustion chamber to cut off combustion gas; When lighting a fire successfully in Preset Time section, auxiliary contact 1J from often open become normally closed, the coil of auxiliary reclay 30K2 obtains electric work, makes its auxiliary contact become normally closed and that burner fast shut-off valve coil is obtained is electric from often opening, and valve is opened to combustion chamber immediately for combustion gas.
The stove igniting electric control gear of above-described embodiment, for when stove burner is in running order, obtains and monitors flame situation in combustion chamber, as normal in flame detection signal, the interior 1J contact signal of supervising device from often open become normally closed; Otherwise flare up fire is undesired as detected, in supervising device, 1J contact signal recovers often to open.By the variation of IJ signal, send into the object that control module reaches valve open and closes.Whole control module key component is to have increased a time-delay relay 30K1, the time adjusting range 0-30 minute of time-delay relay, now get normally closed delayed contact, when lighting a fire to burner, reserved a period of time guarantees that auxiliary reclay 30K2 obtains electric work, now burner fast shut-off valve coil obtains electric (see figure 5) valve open, combustion gas supplies combustion gas to combustion chamber by burner, operation can be lighted a fire, as no success of igniting in Preset Time section, time-delay relay 30K1 deferred action, the auxiliary contact of time-delay relay 30K1 are left from normally closed often becoming, in another flame monitoring equipment, auxiliary contact 1J recovers often to open, auxiliary reclay 30K2 coil losing electricity (see figure 4), according to Fig. 5, now burner repid cut-off valve coil losing electricity, valve is closed immediately, cut off combustion gas and enter combustion chamber.Otherwise as light a fire successfully in Preset Time section, in flame monitoring equipment auxiliary contact 1J from often open become normally closed, auxiliary reclay 30K2 coil obtains electric work, its auxiliary contact become normally closed (see figure 5) from often opening, burner fast shut-off valve coil obtains electric, and valve is opened to combustion chamber immediately for combustion gas.
As shown in Figure 6, between burner repid cut-off valve and stove, be provided with control valve, to regulate the valve opening of supplying with stove combustion gas.The combustion gas of flame monitoring module 30A2 monitoring stove gets the hang of.
Below further illustrate operation principle and the operating process of above-mentioned stove igniting electric control gear of the present utility model.
A. whether execute-in-place work detection burner meets ignition condition, if met, controls gas control valve (Fig. 6) and automatically opens, and aperture 10% can arrange in host computer picture.
B. ignition phase is shown in schematic diagram 3, presses start button 20S2, now contactor 20K1 coil obtain electric, by its auxiliary contact self-sustaining.It carries auxiliary contact 20F(and sees Fig. 4 label 4) by often opening, become normally closed, firing circuit is in SBR.When burner hearth internal temperature is spent lower than 750, need manual ignition, change-over switch 30S3 is placed in to manual position, press starting ignition button 30S1, now flame monitoring equipment normally drops into, it is normally closed that its auxiliary contact 2J keeps, auxiliary reclay 30K5 coil obtains electric, its carry auxiliary contact (label 14 in Fig. 4) from often open become normally closed, time-delay relay 30K1 auxiliary contact are normally closed, auxiliary reclay 30K2 coil obtains electric, its auxiliary contact (label 11 in Fig. 5) from often open become normally closed, 30K4 contact is normally closed, now burner fast shut-off valve coil obtains electric, valve standard-sized sheet, combustion gas enters combustion chamber.Now flame monitoring module 30A2 monitoring flame combustion chamber situation, as flame is normal, carry auxiliary contact 1J and become normally closedly from often opening, auxiliary reclay 30K2 coil obtains electric (Fig. 4 label 16) self-sustaining, burner fast shut-off valve coil keeps obtaining electricity condition, and stop valve is in fully open position.After igniting, flame detecting instrument should monitor flame, and as within the default time period for example 10 minutes, (can adjust the time by 30K1 time-delay relay) do not monitor flame, thinks loss of ignition, on-the-spot confirm after igniting again.When combustion system is normally worked in case of burner is flame-out, now as chamber temperature is greater than 750 degree, change-over switch can be placed in to automated location (Fig. 4 label 11), now auxiliary reclay 30K3 coil obtains electric, 30K4, the mutually deserved electricity of 30K6 auxiliary reclay coil simultaneously, burner fast shut-off valve coil recuperation electricity, valve standard-sized sheet, combustion gas enters combustion chamber.Suppose that combustion gas enters combustion chamber, flame monitoring equipment does not monitor flame, in flame monitoring equipment, auxiliary contact 1J recovers often to open, 30K2 auxiliary reclay coil losing electricity (seeing Fig. 4 label 16), according to Fig. 5, auxiliary reclay 30K2 auxiliary contact are for often opening, burner repid cut-off valve coil losing electricity, valve is closed immediately, stops combustion gas and enters combustion chamber.
C. the flame-out stage, operative employee presses burner control cabinet 20S1 button (seeing Fig. 3 label 5), now auxiliary reclay 20K1 coil losing electricity, it carries auxiliary contact (seeing Fig. 5 label 4) and is opened from normally closed often becoming, this is flame control loop and flame monitoring equipment dead electricity, 30K1,30K2,30K3,30K4,30K6 auxiliary reclay coil losing electricity (see figure 4), burner repid cut-off valve coil losing electricity, valve is closed immediately, stops combustion gas and enters combustion chamber.
In sum, whole flame monitoring module operation principle is when to be that stove burner is in running order monitored flame, its flame monitoring module 30A2 carries the 1J closing of contact, engage existing schematic diagram 4, now 30K2 relay coil obtains electricly, engages existing schematic diagram 5, and burner fast shut-off valve coil obtains electric, now stop valve is opened, and combustion gas enters kiln burning.When stove burner is in running order while monitoring without flame, its flame monitoring module 30A2 carries 1J contact and disconnects, and engages existing schematic diagram 4, now 30K2 relay coil dead electricity, engages existing schematic diagram 5, burner repid cut-off valve coil losing electricity, now stop valve cuts out, and combustion gas does not enter stove.
The utility model is connected by newly-increased monitoring module and control module, in PLC system, reflect in real time burner operation conditions, can timely reflection and the control to the production status in stove in lime burning is produced, the localization of faults fast, accomplish fast processing, resume production, reduce the impact on production and output and quality.
Should be understood that those skilled in the art can make various changes or modifications the utility model after having read above-mentioned instruction content of the present utility model, these equivalent form of values fall within the application's appended claims limited range equally.
Claims (3)
1. a stove igniting electric control gear, comprises sensor, multiple contactor, auxiliary reclay, delayer and programmable logic controller (PLC) (PLC), and described PLC is provided with control module, it is characterized in that, described multiple contactors are normally open contactor; Described PLC is also provided with flame monitoring module, described flame monitoring module is connected with described control module, and be arranged to: when sensor flame detection signal normal, the contact signal of described flame monitoring module by often open change into normally closed, when sensor detects that flare up fire is undesired, the contact signal of flame monitoring module recovers often to open, and sends into described control module make the valve open of burner repid cut-off valve and close by the contact signal of described flame monitoring module; Described control module comprises time-delay relay, there is normally closed delayed contact, with when burner is lighted a fire, reserved a period of time of described time-delay relay obtains electric work to guarantee auxiliary reclay, make burner fast shut-off valve coil obtain electric and make valve open, when no success of igniting in Preset Time section, time-delay relay deferred action, the auxiliary contact of contactor are left from normally closed often becoming, auxiliary contact recover often to open, auxiliary reclay coil losing electricity, so that burner repid cut-off valve coil losing electricity and valve is closed immediately enters combustion chamber to cut off combustion gas; When lighting a fire successfully in Preset Time section, auxiliary contact become normally closedly from often opening, and the coil of auxiliary reclay obtains electric work, make its auxiliary contact become normally closed and that burner fast shut-off valve coil is obtained is electric from often opening, and valve is opened to combustion chamber immediately for combustion gas.
2. stove igniting electric control gear according to claim 1, is characterized in that, is provided with control valve, to regulate the valve opening of supplying with stove combustion gas between described burner repid cut-off valve and stove.
3. stove igniting electric control gear according to claim 1 and 2, is characterized in that, described stove igniting electric control gear also comprises start button, change-over switch and button ignition switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320650623.4U CN203586277U (en) | 2013-10-21 | 2013-10-21 | Electronic control device for ignition in kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320650623.4U CN203586277U (en) | 2013-10-21 | 2013-10-21 | Electronic control device for ignition in kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203586277U true CN203586277U (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320650623.4U Expired - Fee Related CN203586277U (en) | 2013-10-21 | 2013-10-21 | Electronic control device for ignition in kiln |
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| Country | Link |
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| CN (1) | CN203586277U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108195589A (en) * | 2017-12-14 | 2018-06-22 | 中国航发沈阳发动机研究所 | A kind of starting ignition time measurement device |
-
2013
- 2013-10-21 CN CN201320650623.4U patent/CN203586277U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108195589A (en) * | 2017-12-14 | 2018-06-22 | 中国航发沈阳发动机研究所 | A kind of starting ignition time measurement device |
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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: 20140507 Termination date: 20161021 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |