CN200950008Y - Control system for aluminum alloy gas insulation furnace - Google Patents
Control system for aluminum alloy gas insulation furnace Download PDFInfo
- Publication number
- CN200950008Y CN200950008Y CN 200620045832 CN200620045832U CN200950008Y CN 200950008 Y CN200950008 Y CN 200950008Y CN 200620045832 CN200620045832 CN 200620045832 CN 200620045832 U CN200620045832 U CN 200620045832U CN 200950008 Y CN200950008 Y CN 200950008Y
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- lower position
- temperature controller
- temperature
- aluminium
- control system
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Abstract
An aluminium alloy gas maintaining furnace control system includes an ignition controller7, a temperature control device, a gas pressure protecting device, a low position limit detecting device, a wind pressure protecting device, and a blower activate button. The utility model is characterized in that an aluminium liquid temperature controller31 and an atmosphere temperature controller31'which realize temperature control are arranged in the system, wherein, the temperature controller31 is arranged in an aluminium liquid output chamber30 in a furnace body27 and the temperature controller31'is arranged in the atmosphere of an insulation chamber which can monitor the insulation heating atmosphere temperature in the furnace body27.
Description
Technical field
The utility model relates to a kind of combustion gas holding furnace control system, refers in particular to the combustion gas holding furnace control that is used for the molten aluminium alloy holding furnace, belongs to aluminium alloy and melts the heat preservation technology class.
Background technology
On the domestic conventional combustion gas molten aluminium alloy holding furnace, generally all only establish one and detect the controller that aluminium liquid is scooped out mouthful temperature of aluminum liquid, the result, when after initial use or blowing out, reusing, can't carry out the baker operation to holding furnace heating clamber burner hearth accurately, can only roughly estimate the temperature of holding furnace heating clamber according to the temperature of liquid outlet, do like this and might cause refractory material to grasp the improper cracking that causes because of oven drying temperature; Also have, in normal the use, when the temperature of aluminum liquid that enters holding furnace is crossed when low, control system no matter the temperature of holding furnace heating clamber how, continue high combustion to the heating of holding furnace heating clamber, can cause that the molten aluminium alloy surface is overheated, scaling loss increases and holding furnace heating clamber refractory material damages.Before the igniting of combustion gas holding furnace, need purge burner hearth, with the fuel gas that prevents to exist in the stove, especially behind loss of ignition repeatedly, may gather more fuel gas in the burner hearth, at this moment, to there be imflammable gas to discharge as untimely, when in this relative sealed combustion chamber, lighting a fire once more, very easily blast, detonation is when igniting, for the safety that guarantees to light a fire, gas flow must be minimum during igniting, so when igniting, control system must detect the flow valve servomotor at lower position? in order to prevent the generation of this danger, in general fuel gas combustion system, the time-delay purging adds the chain measure of lower position switch before all having introduced igniting, but the lower position switch of servomotor changes sometimes, and lower position location transfer too low the time, in the time of can causing servomotor to arrive lower position, the lower position switch is not connected, and causes control system to light a fire.So, generally all the lower position switch is connected in advance, in case grasp badly, when very easily causing servomotor also not arrive lower position, because of the lower position switch is connected in advance, right air-flow did not also cause advanced ignition to minimum flow and caused danger this moment; There has been the colleague that this reason took place and caused blast.
The utility model content
The purpose of the present utility model: be intended to propose that a kind of serviceability is good, energy consumption is low, have the aluminium alloy combustion gas preservation and controlling system of security reliability.
This aluminium alloy combustion gas holding furnace control system, comprise ignition controller 7, attemperating unit and gas pressure protective device, lower position limit detection device, blast protective device, fan starting button, it is characterized in that: in this system, be provided with two realize temperature controlled aluminium liquid temperature controllers 31 and atmosphere temperature controller 31 ', an aluminium liquid temperature controller 31 wherein is located in the aluminium water liquid outtake chamber 30 of body of heater 27, another atmosphere temperature controller 31 ' then be located in the atmosphere space that can monitor the moist closet 29 that is incubated the heating atmosphere temperature of body of heater 27; In electrical control operating system, the lower position switch is transferred to simultaneously in advance about 15 degree, and between lower position switch and burner, inserts a delayer of 30 seconds.
Three interfaces of described ignition controller 7 are connected on the magnetic valve 8 of burner 1 with ignition transformer 2, flame detector 3 and one group respectively; Described aluminium liquid temperature controller 31 and atmosphere temperature controller 31 ' and connect together and control motor 22 and be connected; Described gas pressure protective device is formed by ball valve 7 and with the Pressure gauge 10 of this ball valve coupling and pressure switch 11 and is arranged in the connecting line of proportioning valve 9 and another ball valve 12; Described lower position limit detection device is made up of lower position switch and control motor 22; Described blast protective device is by placing pressure switch 11 and Pressure gauge 10 on burning blower fan 21 export pipelines to form; Described fan starting button then is installed in the power supply circuits of burning blower fan.
This aluminium alloy combustion gas holding furnace control system according to above technical scheme proposition, because aluminium water liquid outtake chamber and moist closet at body of heater are provided with aluminium liquid temperature controller and atmosphere temperature controller respectively, therefore can both keep the required temperature of aluminium water liquid outtake chamber by in good time temperature adjusting very goodly, made the temperature maintenance of moist closet again in appropriate scope simultaneously; And shift to an earlier date about 15 degree by the lower position switch in the electrical control operating system is transferred to again, between lower position switch and burner, insert a delayer of 30 seconds simultaneously.Abovementioned technology not only keeps the temperature in the stove to be in normal operating conditions all the time, improves the whole service life of body of heater; And provide technical support for the security performance in using.
Description of drawings
Accompanying drawing 1 is a temperature controller scheme of installation of the present utility model;
Accompanying drawing 2 is combustion gas holding furnace system piping diagram.
Among the figure 1, burner, 2, ignition transformer 3, flame monitor 5, Pressure gauge 6, flexible pipe 7, ball valve 8, magnetic valve 9, proportioning valve 10, Pressure gauge 11, pressure switch 12, ball valve 13, pressure-reducing valve 14, filter 15, flowmeter 16, ball valve 17, butterfly valve 18, heat exchanger 19, flexible pipe 20, control butterfly valve 21, burning blower fan 22, control motor 23, butterfly valve 25, nozzle 26, injector 27 bodies of heater 28, molten aluminium chamber 29, moist closet 30, aluminium water liquid outtake chamber 31, aluminium liquid temperature controller 31 ', the atmosphere temperature controller
The specific embodiment
This aluminium alloy combustion gas holding furnace control system shown in Fig. 1-2, it is that existing aluminium alloy combustion gas holding furnace control system is got a kind of inventive improvements, this improvement mainly shows two aspects:
One, in this system, be provided with two temperature controllers 31,31 '; Wherein one is located in the aluminium water liquid outtake chamber 30 of body of heater 27, and another then is located in the moist closet 29 that can monitor insulation heating atmosphere temperature of body of heater 27; When its purpose is normally to use, allow burner accept to be located at the signal of aluminium liquid temperature controller 31 in the aluminium water liquid outtake chamber 30,, the PID ratio is carried out in the burning two of burner regulate according to the mensuration temperature and the design temperature difference of aluminium water in the aluminium water liquid outtake chamber 30; Another atmosphere temperature controller 31 ' be suspended at the moist closet 29 interior spaces of heating furnace is monitored the atmosphere temperature of moist closet; In case the atmosphere temperatures in this moist closet 29 surpass this temperature controller 5 ' design temperature, just send forced burning and instruct to burner, temporarily quantity combusted is controlled to than low degree; In case when moist closet 29 temperature were lower than desirable atmosphere temperature, this temperature controller 31 ' can require again to have burnt and strengthen quantity combusted improved the atmosphere temperature of moist closet.
They are two years old, in electrical control operating system, the lower position switch is transferred in advance about 15 degree, and between lower position switch and burner, insert a delayer of 30 seconds, and to guarantee to wait upon the clothes motor and reach the igniting in 30 seconds of delaying time again behind the lower position, the guarantee point fire safety is reliable.
According to the requirement of aluminium alloy combustion gas holding furnace work, the purging of will delaying time before the burner igniting is in order to guarantee that waiing upon the clothes motor returns lower position automatically.The present invention program for the lower position limit switch that guarantees to control this program accurately and reliably, in the debugging before product export, this lower position limit switch is transferred to setting about 15 degree in advance, and do not allow this lower position limit switch directly connect burner, but insert a timing of 30 seconds (adaptation wait upon clothes motor return maximum duration be 30 seconds function needs) again, after treating the timing arrival of this timer, burner just can be opened by igniting.Like this, though wait upon clothes motor position switch set improper, even when a high position is connected, the burner igniting that also can not be unlocked.Because only after covering 30 seconds perdurabgility of timer, wait upon this moment the clothes motor position certainly naturally the arrival extreme lower position except.Dual setting by lower position limit switch and 30 seconds time-delay mechanisms just, thereby guarantee that burner is igniting in extreme lower position has effectively prevented the generation of blast, deflagration accident having.
The concrete scheme of above-mentioned this inventive improvements is as follows: this aluminium alloy combustion gas holding furnace control system, it is characterized in that: in this system, be provided with two realize temperature controlled aluminium liquid temperature controllers 31 and atmosphere temperature controller 31 ', wherein one is located in the aluminium water liquid outtake chamber 30 of body of heater 1, and another then is located in the atmosphere space of the moist closet 29 that can monitor insulation heating atmosphere temperature of body of heater 27; In electrical control operating system, the lower position switch is transferred to simultaneously in advance about 15 degree, and between lower position switch and burner, inserts a delayer of 30 seconds.
Three interfaces of wherein said ignition controller 7 are connected on the magnetic valve 8 of burner 1 with ignition transformer 2, flame detector 3 and one group respectively; Described aluminium liquid temperature controller 31 and atmosphere temperature controller 31 ' and connect together and control motor 22 and be connected; Described gas pressure protective device is formed by ball valve 7 and with the Pressure gauge 10 of this ball valve coupling and pressure switch 11 and is arranged in the connecting line of proportioning valve 9 and another ball valve 12; Described lower position limit detection device is made up of lower position switch and control motor 22; Described blast protective device is by placing pressure switch 11 and Pressure gauge 10 on burning blower fan 21 export pipelines to form; Described fan starting button then is installed in the power supply circuits of burning blower fan.
Claims (2)
1, a kind of aluminium alloy combustion gas holding furnace control system, comprise ignition controller 7, attemperating unit and gas pressure protective device, lower position limit detection device, blast protective device, fan starting button, it is characterized in that: the attemperating unit that is provided with in this system is made up of aluminium liquid temperature controller (31) and atmosphere temperature controller (31 '), an aluminium liquid temperature controller (31) wherein is located in the aluminium water liquid outtake chamber (30) of body of heater (27), and another atmosphere temperature controller (31 ') then is located in the moist closet (29) that can monitor insulation heating atmosphere temperature of body of heater (27); In electrical control operating system, will wait upon simultaneously clothes motor lower position switch and be transferred in advance about 15 degree, and between lower position switch and burner, insert a delayer of 30 seconds.
2, a kind of aluminium alloy combustion gas holding furnace control system as claimed in claim 1 is characterized in that: three interfaces of described ignition controller (7) are connected on the magnetic valve (8) of burner (1) with ignition transformer (2), flame detector (3) and one group respectively; Described aluminium liquid temperature controller (31) and atmosphere temperature controller (31 ') also connect together and control motor (22) and be connected; Described gas pressure protective device is formed by ball valve (7) and with the Pressure gauge (10) of this ball valve coupling and pressure switch (11) and is arranged in the connecting line of proportioning valve (9) and another ball valve (12); Described lower position limit detection device is made up of lower position switch and control motor (22); Described blast protective device is by placing pressure switch (11) and Pressure gauge (10) on burning blower fan (21) export pipeline to form; Described fan starting button then is installed in the power supply circuits of burning blower fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620045832 CN200950008Y (en) | 2006-09-15 | 2006-09-15 | Control system for aluminum alloy gas insulation furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620045832 CN200950008Y (en) | 2006-09-15 | 2006-09-15 | Control system for aluminum alloy gas insulation furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200950008Y true CN200950008Y (en) | 2007-09-19 |
Family
ID=38892549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620045832 Expired - Fee Related CN200950008Y (en) | 2006-09-15 | 2006-09-15 | Control system for aluminum alloy gas insulation furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200950008Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105423766A (en) * | 2015-12-02 | 2016-03-23 | 安徽马钢重型机械制造有限公司 | Method for preventing overtemperature of heating furnace under DCS control |
-
2006
- 2006-09-15 CN CN 200620045832 patent/CN200950008Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105423766A (en) * | 2015-12-02 | 2016-03-23 | 安徽马钢重型机械制造有限公司 | Method for preventing overtemperature of heating furnace under DCS control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070919 Termination date: 20120915 |