CN204612505U - A kind of total oxygen melting furnaces flue air compensation device and apply its pressure control device - Google Patents
A kind of total oxygen melting furnaces flue air compensation device and apply its pressure control device Download PDFInfo
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- CN204612505U CN204612505U CN201520138155.1U CN201520138155U CN204612505U CN 204612505 U CN204612505 U CN 204612505U CN 201520138155 U CN201520138155 U CN 201520138155U CN 204612505 U CN204612505 U CN 204612505U
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Abstract
The utility model discloses a kind of total oxygen melting furnaces flue air compensation device and apply its pressure control device, air compensation device comprises secondary air channel road, its air inlet is connected with air blast, and its air outlet is connected with the flue collector of total oxygen melting furnaces, and the air outlet on secondary air channel road is arranged at the front of rotating sluice; Secondary air channel road is provided with air inlet for subsequent use near one end of flue collector; Secondary air channel road is provided with temperature compensation means and secondary air channel road flowmeter; Flue collector is also provided with thermocouple in the anterior position near rotating sluice; Pressure control device comprises on the basis of described air compensation device, furnace pressure measurement mechanism and rotating sluice, described air compensation device is easy to installation and maintenance, cost is low, production is not affected under the abnormal conditions such as power failure, by the regulation and control of temperature in flue, furnace pressure is stablized controlled, described pressure control device accurately can control furnace pressure, improves the quality of glass.
Description
Technical field
The utility model belongs to float glass technical field, relates in particular to the flue air compensation device for total oxygen melting furnaces in a kind of float glass.
Background technology
Float glass process is flat glass production process most advanced and ripe at present, in this production technology, total oxygen high temperature melting furnaces are development in recent years a kind of core heat power equipments rapidly, this high temperature melting furnaces can well control NOx discharge and waste heat is recycled, and adopt this high temperature melting furnaces significantly can reduce microbubble in glass, produce various high-quality glass.
Carry out in the process of glass melting at use total oxygen high temperature melting furnaces, except glass melting temperature, glass liquid level are on except the impact of melting quality, the stability of Melter pressure is also a vital influence factor, if furnace pressure is excessive, melting furnaces will be made seriously to burn with anger, not only can increase fuel consumption, also can aggravate the scaling loss of kiln body, be unfavorable for clarification and the cooling of glass metal; And furnace pressure too small time, melting furnaces will suck cold air, make temperature distributing disproportionation in melting furnaces even, cause glass quality to be affected.Comparatively simple method utilizes the aperture of the flashboard be arranged on flue to control furnace pressure at present, but the burnt gas temperature entering flue can reach about 1600 DEG C, if it is directly drained from flue, flashboard not only in easy scaling loss flue, in hot environment melting furnaces, the glass of volatilization also can cause flue blockage.
For this reason, Chinese patent literature CN202226768U discloses a kind of pressure-regulating device of pure oxygen glass furnace: arrange flue in smelting furnace side, flue arranges air channel, and side, air channel is communicated with air blast; Also be provided with controller, air blast is connected with the output of pressure controller, is provided with device for pressure measurement in boiler, and its output is connected with the input of controller by wire, in air channel, surrounding is provided with nozzle, the air inlet of nozzle is communicated with blower export; In the process that above-mentioned pressure-regulating device can be derived through flue at molten inner flue gas of the stove, by air blast to air blast in flue, high-temperature flue gas is diluted, reduce the temperature of flue gas and the volatilization degree of glass ingredient, prevent flue blockage, controller and device for pressure measurement with the use of, regulate the benefit air quantity of air blast according to the burning load of melting furnaces and pressure measuring value, thus furnace pressure controlled.But above-mentioned pressure-regulating device need arrange the air channel be communicated with external blower in the inside of flue vertical section (i.e. high temperature section), must transform flue, equipment investment is higher, and the material requirements of the environment in high temperature section flue to air channel is high, more add the cost of equipment; Nozzle in air channel is very easily at high temperature burnt when air quantity is less or coking and blocking nozzle, need destroy flue during replacing, adds difficulty and the cost of plant maintenance; Flashboard on the other hand in above-mentioned pressure-regulating device is manual flashboard, the dynamically accurate switch degree adjusting flashboard cannot be realized in real time according to kiln temperature, pressure, effectively can not control the stable discharge of high-temperature flue gas in kiln, easily there is fluctuation in furnace pressure, affects the quality of glass; If there is the situations such as power failure or blower fault, above-mentioned pressure-regulating device then cannot run, and have impact on production efficiency; And above-mentioned pressure-regulating device is by means of only the benefit air quantity of the pressure measuring value adjustment air blast of melting furnaces, and in fact in flue the change of temperature also significantly can affect the furnace pressure of melting furnaces, temperature in the non-accuracy controlling flue of this device, therefore the furnace pressure in melting furnaces cannot accurately be controlled, make furnace pressure remain at stable state, still can affect the quality of output glass.
Utility model content
For this reason, technical problem to be solved in the utility model is in float glass, the problem that existing oxy-fuel glass furnace flue air compensation device production cost is high, and the benefit air quantity that accurately cannot control air blast causes the problem of klin pressure fluctuation, thus propose a kind of total oxygen melting furnaces flue air compensation device being easy to installation and maintenance, and further provide and a kind ofly use above-mentioned air compensation device can the total oxygen melting furnaces regulator of accuracy controlling furnace pressure.
For solving the problems of the technologies described above, the technical solution of the utility model is:
The utility model provides a kind of total oxygen melting furnaces flue air compensation device, it comprises secondary air channel road, the air inlet on described secondary air channel road is connected with air blast, and the air outlet on described secondary air channel road is connected with the flue collector of described melting furnaces, and the air outlet on described secondary air channel road is arranged at the front of rotating sluice;
Described secondary air channel road is provided with air inlet for subsequent use near one end of described flue collector;
Described secondary air channel road is provided with temperature compensation means and secondary air channel road flowmeter;
Described flue collector is also provided with thermocouple in the anterior position near described rotating sluice.
Further, described secondary air channel road comprises the air main and branch wind pipe that are communicated with and arrange, the air outlet of described branch wind pipe forms the air outlet on described secondary air channel road, the air inlet of described branch wind pipe comprises the air inlet described for subsequent use forming described secondary air channel road and the air air inlet being connected described air main air outlet, described air air inlet is arranged on the sidewall of described branch wind pipe, and described air main air inlet forms the air inlet on described secondary air channel road; Described temperature compensation means and described secondary air channel road flowmeter are arranged on described air main.
Further, described branch wind pipe is perpendicular to the vertical gas pass of described total oxygen melting furnaces.
Described total oxygen melting furnaces flue comprises the vertical gas pass being positioned at the described relative both sides of total oxygen melting furnaces, with the branch flue being connected described vertical gas pass, and collects the flue collector of flue gas in described branch flue.
The entrance point of described flue collector is provided with wind-supplying mouth, in order to connect the air outlet on described secondary air channel road.
Described branch flue is just provided with wind-supplying mouth on the sidewall of the import of described flue collector, in order to connect the air outlet on described secondary air channel road.
Described air inlet for subsequent use is connected with butterfly valve or blind plate; Described air blast is frequency conversion air blast, is flexible coupling between described air blast and described air main by canvas or rubber.
The utility model additionally provides a kind of pressure control device, comprises described total oxygen melting furnaces flue air compensation device, is arranged at total oxygen melting furnaces sidewall and partly gos deep into the furnace pressure measurement mechanism of described total oxygen melting furnaces and be arranged at the rotating sluice of flue collector inside.
Described furnace pressure measurement mechanism comprises differential pressure transmitter.
Described rotating sluice comprises axis and is arranged at two plates on described axis, and described plate can around described central axis, and described axis two ends are fixedly connected on the upper and lower wall of described flue collector respectively.
Technique scheme of the present utility model has the following advantages compared to existing technology:
(1) total oxygen melting furnaces flue air compensation device described in the utility model, comprise, secondary air channel road, its air inlet is connected with air blast, its air outlet is connected with the flue collector of melting furnaces, and the air outlet on secondary air channel road is arranged at the front of rotating sluice, and the air blast that secondary air channel road end connects can to blow air in flue collector, cool and dilute the high-temperature flue gas that melting furnaces discharge, making melting furnaces furnace pressure keep stable; Secondary air channel road is provided with air inlet for subsequent use near one end of flue collector, it can be opened when having a power failure or air blast breaks down, under the effect of the draft caused at flue inside and outside temperature difference, extraneous air is introduced flue, cooling high temperature flue gas, under avoiding special status, high-temperature flue gas burns rotating sluice, ensure that the continuity of production; Secondary air channel road is also provided with temperature compensation means and secondary air channel road flowmeter, due to the gas of different temperatures enter flue after volumetric expansion degree different, cause pressure intensity of variation in flue different, can by the temperature value of design temperature compensation arrangement, when difference variation exceedes certain limit, air blast carries out finely tuning and revises to intake automatically, ensure that the stable of gas volume in flue, and then ensure that stablizing of kiln inner pressure; Flue collector is provided with thermocouple in rotating sluice front, thermocouple is positioned at rotating sluice front, effectively can monitor the temperature of rotating sluice place flue gas, rotating sluice is prevented to be burnt, by carrying out temperature setting to thermocouple, according to the temperature fluctuation situation of thermocouple, the intake of air blast can adjust the temperature stabilization ensureing thermocouple automatically, thus accurately control the constant melting furnaces furnace pressure that finally makes of temperature in flue and remained on stable state, improve the quality of output glass.
(2) total oxygen melting furnaces flue air compensation device described in the utility model, secondary air channel road is fixed on flue collector or branch flue sidewall, this fixed form is without the need to transforming flue internal structure, simple installation, can operate at normal temperatures, equipment cost is cheap, move towards the direction contrary with secondary air channel road under the effect of the air that the high-temperature flue gas simultaneously in flue passes on secondary air channel road and extraneous draft, high temperature scaling loss can not be caused to secondary air channel road.
(3) total oxygen melting furnaces flue air compensation device described in the utility model, be flexible coupling by canvas or rubber between air blast and secondary air channel road, this connected mode can sound attenuation and vibration isolation, and this bi-material has with low cost, waterproof and dustproof, the advantage such as grease proofing, corrosion-resistant, wear-resistant.
(4) pressure control device described in the utility model, on the basis of total oxygen melting furnaces flue air compensation device, also comprise the furnace pressure measurement mechanism being arranged on total oxygen melting furnaces sidewall and the rotating sluice being arranged on flue collector inside, when furnace pressure measurement mechanism detects that in melting furnaces, furnace pressure changes, rotating sluice regulates folding degree automatically, the size of the amount of flue gas is discharged in adjustment, thus have adjusted furnace pressure, achieve the real-time dynamic regulation to furnace pressure, ensure that furnace pressure maintains in stable scope all the time, make melting furnaces stable conditions, the glass quality of output is good.
Accompanying drawing explanation
In order to make content of the present utility model be more likely to be clearly understood, below according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein
Fig. 1 is the structural representation of pressure control device described in the utility model;
Fig. 2 is the left view of Fig. 1.
In figure, Reference numeral is expressed as: 1-branch flue; 2-air main; 3-branch wind pipe; 4-air blast; 5-air inlet for subsequent use; 6-rotating sluice; 7-flue collector; 8-furnace pressure measurement mechanism; 9-total oxygen melting furnaces; 10-temperature compensation means; 11-thermocouple; 12-secondary air channel road flowmeter; 13-vertical gas pass; 14-chimney.
Detailed description of the invention
Embodiment 1
The present embodiment provides a kind of total oxygen melting furnaces flue air compensation device, as depicted in figs. 1 and 2, comprise secondary air channel road, the air inlet on described secondary air channel road connects an air blast 4 by canvas, and described air blast 4 is frequency conversion air blast, and the air outlet on described secondary air channel road is connected with the flue collector 7 of described melting furnaces, the air outlet on described secondary air channel road is arranged at the front of rotating sluice 6, in order to the convenience described, the front described in the application refers to the direction that flue gas flows into, and corresponding rear refers to the direction that flue gas flows out;
Described secondary air channel road is provided with air inlet 5 for subsequent use near one end of described flue collector 7, and described air inlet 5 for subsequent use is connected with a butterfly valve;
Described secondary air channel road is provided with temperature compensation means 10 and secondary air channel road flowmeter 12;
Described flue collector is also provided with thermocouple 11 in the anterior position near described rotating sluice 6;
In the present embodiment, described air blast 4 for blow air in flue collector, cools and dilutes the high-temperature flue gas that melting furnaces discharge, making melting furnaces furnace pressure keep stable; Open the butterfly valve at air inlet 5 place for subsequent use when having a power failure or air blast breaks down, under the effect of the draft caused at flue inside and outside temperature difference, extraneous air is introduced into flue, cooling high temperature flue gas, and under avoiding special status, high-temperature flue gas burns rotating sluice; By the temperature value of design temperature compensation arrangement, when difference variation exceedes certain limit, air blast carries out finely tuning and revises to intake automatically, ensure that the stable of gas volume in flue, and then ensures stablizing of kiln inner pressure; Thermocouple 11 is positioned at rotating sluice front, effectively can monitor the temperature of rotating sluice place flue gas, rotating sluice is prevented to be burnt, according to the temperature fluctuation situation of thermocouple, the intake of air blast can adjust automatically, thus accurately control the constant melting furnaces furnace pressure that finally makes of temperature in flue and remained on stable state, improve the quality of output glass.
In total oxygen melting furnaces flue air compensation device described in the present embodiment, described secondary air channel road comprises the air main 2 and branch wind pipe 3 that are communicated with and arrange, the air outlet of described branch wind pipe 3 forms the air outlet on described secondary air channel road, the air inlet of described arm 3 comprises the air inlet 5 described for subsequent use and the air air inlet being connected described air main 2 air outlet that form described secondary air channel road, described air air inlet is arranged on the sidewall of described branch wind pipe 3, and described air main 2 air inlet forms the air inlet on described secondary air channel road; Described temperature compensation means 10 and described secondary air channel road flowmeter 12 are arranged on described air main 2.
In the present embodiment, the flue of described total oxygen melting furnaces 9 comprises the vertical gas pass 13 being positioned at the relative both sides of described total oxygen melting furnaces 9, with the branch flue 1 being connected described vertical gas pass 13, and collect the flue collector 7 of flue gas in described branch flue 1, described branch wind pipe 3 is arranged perpendicular to described vertical gas pass 13.
Further, in the present embodiment, the entrance point of described flue collector 7 is provided with wind-supplying mouth, in order to connect the air outlet on described secondary air channel road.
Embodiment 2
The present embodiment provides a kind of total oxygen melting furnaces flue air compensation device, as depicted in figs. 1 and 2, comprise secondary air channel road, the air inlet on described secondary air channel road connects an air blast 4 by canvas, and described air blast 4 is frequency conversion air blast, and the air outlet on described secondary air channel road is connected with the flue collector 7 of described melting furnaces, the air outlet on described secondary air channel road is arranged at the front of rotating sluice 6, in order to the convenience described, the front described in the application refers to the direction that flue gas flows into, and corresponding rear refers to the direction that flue gas flows out;
Described secondary air channel road is provided with air inlet 5 for subsequent use near one end of described flue collector 7, and described air inlet 5 for subsequent use is connected with a butterfly valve;
Described secondary air channel road is provided with temperature compensation means 10 and secondary air channel road flowmeter 12;
Described flue collector is also provided with thermocouple 11 in the anterior position near described rotating sluice 6;
In the present embodiment, described air blast 4 for blow air in flue collector, cools and dilutes the high-temperature flue gas that melting furnaces discharge, making melting furnaces furnace pressure keep stable; Open the butterfly valve at air inlet 5 place for subsequent use when having a power failure or air blast breaks down, under the effect of the draft caused at flue inside and outside temperature difference, extraneous air is introduced into flue, cooling high temperature flue gas, and under avoiding special status, high-temperature flue gas burns rotating sluice; By the temperature value of design temperature compensation arrangement, when difference variation exceedes certain limit, air blast carries out finely tuning and revises to intake automatically, ensure that the stable of gas volume in flue, and then ensures stablizing of kiln inner pressure; Thermocouple 11 its be positioned at rotating sluice front, effectively can monitor the temperature of rotating sluice place flue gas, rotating sluice is prevented to be burnt, according to the temperature fluctuation situation of thermocouple, the intake of air blast can adjust automatically, thus accurately control the constant melting furnaces furnace pressure that finally makes of temperature in flue and remained on stable state, improve the quality of output glass.
In total oxygen melting furnaces flue air compensation device described in the present embodiment, described secondary air channel road comprises the air main 2 and branch wind pipe 3 that are communicated with and arrange, the air outlet of described branch wind pipe 3 forms the air outlet on described secondary air channel road, the air inlet of described arm 3 comprises the air inlet 5 described for subsequent use and the air air inlet being connected described air main 2 air outlet that form described secondary air channel road, described air air inlet is arranged on the sidewall of described branch wind pipe 3, and described air main 2 air inlet forms the air inlet on described secondary air channel road; Described temperature compensation means 10 and described secondary air channel road flowmeter 12 are arranged on described air main 2.
In the present embodiment, the flue of described total oxygen melting furnaces 9 comprises the vertical gas pass 13 being positioned at the relative both sides of described total oxygen melting furnaces 9, with the branch flue 1 being connected described vertical gas pass 13, and collect the flue collector 7 of flue gas in described branch flue 1, described branch wind pipe 3 is arranged perpendicular to described vertical gas pass 13.
Further, in the present embodiment, described branch flue 1 is just provided with wind-supplying mouth on the sidewall of the import of described flue collector 7, in order to connect the air outlet on described secondary air channel road.
Embodiment 3
Present embodiments provide a kind of pressure control device, as shown in Figure 1, comprise total oxygen melting furnaces flue air compensation device as described in Example 1, also comprise and be arranged at total oxygen melting furnaces 9 sidewall and partly go deep into the furnace pressure measurement mechanism 8 of described total oxygen melting furnaces 9 and be arranged at the rotating sluice 6 of flue collector 7 inside, wherein, described furnace pressure measurement mechanism 8 comprises differential pressure transmitter; Described rotating sluice 6 comprises axis and is arranged at two plates on described axis, and described plate can around described central axis, and described axis two ends are fixedly connected on the upper and lower wall of described flue collector 7 respectively.The air compensation device adopted in the pressure control device of other embodiment can also be the variant of the total oxygen melting furnaces flue air compensation device described in embodiment 2 or the air compensation device based on embodiment 1 or 2.
One as the present embodiment is out of shape, rotating sluice 6 can also be set to the telescopic flashboard vertical with flow of flue gas direction, by changing the folding degree of its flexible amplitude adjusted flashboard, and then the size of the amount of flue gas is discharged in adjustment, thus have adjusted furnace pressure.
When furnace pressure measurement mechanism 8 detects that in melting furnaces, furnace pressure changes, rotating sluice 6 regulates folding degree automatically, the size of the amount of flue gas is discharged in adjustment, thus have adjusted furnace pressure, achieve the real-time dynamic regulation to furnace pressure, ensure that furnace pressure maintains in stable scope all the time, make melting furnaces stable conditions, the nature of glass quality of output is good.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still among the protection domain that the utility model creates.
Claims (10)
1. a total oxygen melting furnaces flue air compensation device, it is characterized in that, comprise secondary air channel road, the air inlet on described secondary air channel road is connected with air blast (4), the air outlet on described secondary air channel road is connected with the flue collector (7) of described total oxygen melting furnaces (9), and the air outlet on described secondary air channel road is arranged at the front of rotating sluice (6);
Described secondary air channel road is provided with air inlet for subsequent use (5) near one end of described flue collector (7);
Described secondary air channel road is provided with temperature compensation means (10) and secondary air channel road flowmeter (12);
Described flue collector is also provided with thermocouple (11) in the anterior position near described rotating sluice (6).
2. total oxygen melting furnaces flue air compensation device according to claim 1, it is characterized in that, described secondary air channel road comprises the air main (2) and branch wind pipe (3) that are communicated with and arrange, the air outlet of described branch wind pipe (3) forms the air outlet on described secondary air channel road, the air inlet of described branch wind pipe (3) comprises the air inlet described for subsequent use (5) forming described secondary air channel road and the air air inlet being connected described air main (2) air outlet, described air air inlet is arranged on the sidewall of described branch wind pipe (3), the air inlet of described air main (2) forms the air inlet on described secondary air channel road, described temperature compensation means (10) and described secondary air channel road flowmeter (12) are arranged on described air main (2).
3. total oxygen melting furnaces flue air compensation device according to claim 2, is characterized in that, described branch wind pipe (3) is perpendicular to the vertical gas pass (13) of described total oxygen melting furnaces (9).
4. according to the arbitrary described total oxygen melting furnaces flue air compensation device of claim 1-3, it is characterized in that, the flue of described total oxygen melting furnaces (9) comprises the vertical gas pass (13) being positioned at the relative both sides of described total oxygen melting furnaces (9), with the branch flue (1) being connected described vertical gas pass (13), and collect the flue collector (7) of flue gas in described branch flue (1).
5. total oxygen melting furnaces flue air compensation device according to claim 4, it is characterized in that, the entrance point of described flue collector (7) is provided with wind-supplying mouth, in order to connect the air outlet on described secondary air channel road.
6. total oxygen melting furnaces flue air compensation device according to claim 4, it is characterized in that, described branch flue (1) is just provided with wind-supplying mouth on the sidewall of the import of described flue collector (7), in order to connect the air outlet on described secondary air channel road.
7. the total oxygen melting furnaces flue air compensation device according to claim 5 or 6, is characterized in that, described air inlet for subsequent use (5) is connected with butterfly valve or blind plate; Described air blast (4) is frequency conversion air blast, is flexible coupling between described air blast (4) and described air main (2) by canvas or rubber.
8. a pressure control device, it is characterized in that, comprise the total oxygen melting furnaces flue air compensation device described in any one of claim 1-7, be arranged at total oxygen melting furnaces (9) sidewall and partly go deep into the furnace pressure measurement mechanism (8) of described total oxygen melting furnaces (9) and be arranged at the inner rotating sluice (6) of flue collector (7).
9. pressure control device according to claim 8, is characterized in that, described furnace pressure measurement mechanism (8) comprises differential pressure transmitter.
10. pressure control device according to claim 9, it is characterized in that, described rotating sluice (6) comprises axis and is arranged at two plates on described axis, described plate can around described central axis, and described axis two ends are fixedly connected on the upper and lower wall of described flue collector (7) respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520138155.1U CN204612505U (en) | 2015-03-11 | 2015-03-11 | A kind of total oxygen melting furnaces flue air compensation device and apply its pressure control device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520138155.1U CN204612505U (en) | 2015-03-11 | 2015-03-11 | A kind of total oxygen melting furnaces flue air compensation device and apply its pressure control device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197045A (en) * | 2016-07-15 | 2016-12-07 | 武汉都市环保工程技术股份有限公司 | Afterheat boiler system, rotary hearth furnace high-temperature dust-containing flue gas processing system and method |
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2015
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197045A (en) * | 2016-07-15 | 2016-12-07 | 武汉都市环保工程技术股份有限公司 | Afterheat boiler system, rotary hearth furnace high-temperature dust-containing flue gas processing system and method |
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Granted publication date: 20150902 Termination date: 20200311 |