CN205347191U - Glass substrate kiln combustion system and prevent flame -out pipeline thereof - Google Patents
Glass substrate kiln combustion system and prevent flame -out pipeline thereof Download PDFInfo
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- CN205347191U CN205347191U CN201521131756.6U CN201521131756U CN205347191U CN 205347191 U CN205347191 U CN 205347191U CN 201521131756 U CN201521131756 U CN 201521131756U CN 205347191 U CN205347191 U CN 205347191U
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Abstract
The utility model discloses a glass substrate kiln combustion system and prevent flame -out pipeline thereof, the glass substrate kiln combustion system prevents that flame -out pipeline includes instrument air supply line, air pipe for the instrument, air pipe and instrument air supply line are linked together for the instrument, be provided with first relief pressure valve on the instrument air supply line, wherein, instrument air supply line and for the instrument between the air pipe still the intercommunication have an emergent gas piping who has emergent gas holder, the second check valve that is provided with the second relief pressure valve that is located emergent gas holder low reaches on this emergency gas piping and is located these second relief pressure valve low reaches, the decompression pressure of second relief pressure valve is less than the decompression pressure of first relief pressure valve, the second check valve can allow gas to keep away from the flow of second relief pressure valve. When the tray for combustion air feed was unusual, the second check valve was by being opened under the effect of its both sides pressure differential, and then got into the normal aperture of air pipe in order to replace compressed air to maintain the combustion system control valve instrument for by emergent gaseous, had avoided above -mentioned control valve to close, leaded to burning the situation that the rifle stalls.
Description
Technical field
This utility model relates to glass substrate and produces apparatus field, in particular it relates to a kind of glass substrate kiln combustion system and anti-stall pipeline thereof.
Background technology
In liquid crystal glass substrate production line furnace equipment, fuel is delivered to each bye-pass after the filtration of main line tray for combustion, decompression, delivers to after burning rifle mixes in burner block and enter tank furnace space combustion after being adjusted valve control and detecting flow.Simultaneously by oxygen being fired the adjustment of ratio, controlling length and the luminosity of combustion flame, making flame meet the needs of technique.Natural gas relief valve on tray for combustion, oxygen safety valve, natural gas flow control valve and oxygen flux control valve are all that air is pneumatic to be controlled by compressing, regulate valve seat opening, once compressed air pressure fluctuation moment is lower than certain value, such as 4.5bar, natural gas relief valve, oxygen safety valve, natural gas flow control valve and oxygen flux control valve are unable to maintain that normal aperture may turn off, after causing that burning rifle stops working, Central Control Room arranges personnel to need manually opened emergency nitrogen ball valve at the scene, close compressed air inlet ball valve, complete whole process to need within five minutes, to recover burning, kiln temperature within five minutes, can be caused to decline 5～10 DEG C, kiln temperature declines and directly influences the refining quality of glass, after glass melting deterioration, product there will be calculus, the bad defect such as bubble, product quality, yield is degradation in a long time.
Utility model content
A purpose of the present utility model is to provide a kind of glass substrate anti-stall pipeline of kiln combustion system, and this glass substrate anti-stall pipeline of kiln combustion system can when combustion system tray for combustion instrument supply be abnormal, it is to avoid burns rifle and stops working.
Another purpose of the present utility model is to provide a kind of glass substrate kiln combustion system, and this glass substrate kiln combustion system includes the glass substrate anti-stall pipeline of kiln combustion system that this utility model provides.
According to an aspect of the present utility model, a kind of glass substrate anti-stall pipeline of kiln combustion system is provided, including for being connected to the instrument supply air line on air compressor machine, for being connected to the instrument air pipe on tray for combustion, described instrument air pipe is connected with described instrument supply air line, described instrument supply air line is provided with the first air relief valve, wherein, the emergent gas piping with emergent air accumulator also it is communicated with between described instrument supply air line and described instrument air pipe, this emergent gas piping is provided with the second air relief valve being positioned at described emergent air accumulator downstream and the second check valve being positioned at this second air relief valve downstream, the decompressed pressure of described second air relief valve is less than the decompressed pressure of described first air relief valve, described second check valve can allow for gas away from described second air relief valve flowing.
Preferably, described instrument supply air line being additionally provided with the first check valve being positioned at described first air relief valve downstream, this first check valve can allow for gas away from described first air relief valve flowing.
Preferably, the gas stored in described emergent air accumulator is liquid nitrogen.
Preferably, the decompressed pressure of described first air relief valve ranges for 5.3-5.9bar, and the decompressed pressure of described second air relief valve ranges for 4.8-5.1bar.
Preferably, the decompressed pressure of described first air relief valve is 5.5bar, and the decompressed pressure of described second air relief valve is 5.0bar.
According to another aspect of the present utility model, it is provided that a kind of glass substrate kiln combustion system, this combustion system uses the glass substrate anti-stall pipeline of kiln combustion system that this utility model provides.
Pass through technique scheme, when tray for combustion supply is normal, the gas pressure of emergent gas piping is less than the gas pressure of instrument air pipe, second check valve can only uniaxially flow towards instrument air pipe, instrument air pipe can only be flowed to from the compression air of air compressor machine manufacture uniquely after the first air relief valve decompression, thus control the aperture of valve without influence on various combustion systems；When tray for combustion supply is abnormal, such as, when combustion system is too low at compressed air pressure or compression air stops pressing, owing to the gas pressure of emergent gas piping is more than the gas pressure of instrument air pipe, second check valve is opened under the effect of its both sides pressure reduction, and then entered instrument air pipe to replace compression air to maintain the normal aperture of natural gas relief valve, oxygen safety valve, natural gas flow control valve and oxygen flux control valve by emergent gas, avoid above-mentioned by the combustion system control valve closedown of pneumatic control, cause burning the situation that rifle is flame-out.When the pressure of instrument supply air line recovers normal, the gas pressure of emergent gas piping is less than the gas pressure of instrument air pipe, thus the second check valve is automatically switched off, and emergent gas stops entering instrument air pipe.To sum up, whole anti-stall pipeline structure is simple, easy to use, has stopped to burn the flame-out extreme influence that process stabilizing and product quality and yield are caused of rifle quickly and effectively.
Other feature and advantage of the present utility model will be described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to offer and is further appreciated by of the present utility model, and constitutes a part for description, is used for explaining this utility model, but is not intended that restriction of the present utility model together with detailed description below.In the accompanying drawings:
Fig. 1 is the structural representation of the glass substrate anti-stall pipeline of kiln combustion system that this utility model preferred implementation provides.
Description of reference numerals
10 instrument air pipe 11 first air relief valve 12 first check valve
20 instrument air pipe 21 second air relief valve 22 second check valve
30 anxious gas pipings
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail.It should be appreciated that detailed description of the invention described herein is merely to illustrate and explains this utility model, it is not limited to this utility model.
In this utility model, when not making contrary explanation, the noun of locality of use typically refers to for the flow direction of gas such as " upstream, downstream ", specifically, is downstream towards the flow direction of gas, and the flow direction deviating from gas is upstream.
As shown in Figure 1, this utility model provides a kind of glass substrate anti-stall pipeline of kiln combustion system, including for being connected to the instrument supply air line 10 on air compressor machine, for being connected to the instrument air pipe 20 on tray for combustion, instrument air pipe 20 is connected with instrument supply air line 10, instrument supply air line 10 is provided with the first air relief valve 11, excessive with the pressure that prevents pipeline, wherein, the emergent gas piping 30 with emergent air accumulator also it is communicated with between instrument supply air line 10 and instrument air pipe 20, this emergent gas piping 30 is provided with the second air relief valve 21 being positioned at emergent air accumulator downstream and the second check valve 22 being positioned at this second air relief valve 21 downstream, the decompressed pressure of the second air relief valve 21 is less than the decompressed pressure of the first air relief valve 11, second check valve 22 can allow for gas and flows away from the second air relief valve 21.
Wherein, " decompressed pressure " herein refers to that gas is when flowing through corresponding air relief valve, if entering the admission pressure before corresponding air relief valve more than decompressed pressure, the outlet pressure then flowed out from corresponding air relief valve remains the size of decompressed pressure, if entering back into the admission pressure before corresponding air relief valve less than decompressed pressure, then the decompressed pressure flowed out from corresponding air relief valve remains the size of admission pressure.
That is, when tray for combustion normally supplies, the decompressed pressure of the second air relief valve 21 is less than the decompressed pressure of the first air relief valve 11, mean, from the outlet pressure of the first air relief valve 11 outflow more than the outlet pressure flowed out from the second air relief valve 21, therefore, the second check valve 22 is constantly in the state of closedown.
When tray for combustion supply is normal, the gas pressure of emergent gas piping 30 is less than the instrument gas pressure with air pipe 20, second check valve 22 can only uniaxially flow towards instrument air pipe 20, instrument air pipe 20 can only be flowed to from the compression air of air compressor machine manufacture uniquely after the first air relief valve 11 decompression, thus control the aperture of valve without influence on various combustion systems；When tray for combustion supply is abnormal, such as, when combustion system is too low at compressed air pressure or compression air stops pressing, owing to the gas pressure of emergent gas piping 30 is more than the gas pressure of instrument air pipe 20, second check valve is opened under the effect of its both sides pressure reduction, and then entered instrument air pipe 20 to replace compression air to maintain the normal aperture of natural gas relief valve, oxygen safety valve, natural gas flow control valve and oxygen flux control valve by emergent gas, avoid above-mentioned by the combustion system control valve closedown of pneumatic control, cause burning the situation that rifle is flame-out.When the pressure of instrument supply air line 10 recovers normal, the gas pressure of emergent gas piping 30 is less than the instrument gas pressure with air pipe 20, thus the second check valve 22 is automatically switched off, and emergent gas stops entering instrument air pipe.To sum up, whole anti-stall pipeline structure is simple, easy to use, has stopped to burn the flame-out extreme influence that process stabilizing and product quality and yield are caused of rifle quickly and effectively.
During for preventing tray for combustion supply abnormal, emergent gas is run off by instrument supply air line 10, and instrument supply air line 10 is additionally provided with the first check valve 12 being positioned at the first air relief valve 11 downstream, and this first check valve 12 can allow for gas and flows away from the first air relief valve 11.That is, the first check valve 12 and second check valve 22 path direction in pipeline are contrary, and have and only one of which is in open mode.In other words, the first check valve 12 flow to instrument air pipe 20 from instrument supply air line 10 with can only allowing gas unidirectional.So, when the second check valve 22 is opened, emergent gas can only flow to instrument air pipe 20 uniquely, in order to emergent gas supplies in time and supplements compression air extremely normal production value.
For convenience of storage, the gas stored in emergent air accumulator is liquid nitrogen.So, when the abnormal case such as air compressor machine breaks down, power failure cause compressed air pressure extremely low, it is possible to use the extremely low liquid nitrogen of fault rate is as emergent gas, to maintain stable compressed-air actuated pressure.
Adapting for the normal combustion with combustion system, the decompressed pressure of the first air relief valve 11 ranges for 5.3-5.9bar, and the decompressed pressure of the second air relief valve 21 ranges for 4.8-5.1bar.
Further, the decompressed pressure of the first air relief valve 11 is 5.5bar, and the decompressed pressure of the second air relief valve 21 is 5.0bar.
Specifically, when normally producing, pipeline keeps compressed air pressure (about 5.5bar) > state of emergent nitrogen pressure (about 5.0bar), now the first check valve 12 path is open mode, and the second check valve 22 path is closed mode.When compressing air lower than 5.0bar, the second check valve 22 is backed down automatically by the nitrogen of 5.0bar pressure, and a part of nitrogen enters into instrument air pipe 20, plays constant compression air pressure effect.When supply gas pressure recovers normal (compressed air pressure is higher than 5.0bar and reaches 5.5bar), the second check valve 22 is higher than the compression air of 5.0bar pressure and automatically pushes up closedown, and emergency nitrogen stops entering into compressed air line.
When compressing air and stopping the supple of gas or steam because without air pressure (less than emergent nitrogen pressure), instrument supply air line 10 causes that the first check valve 12 cannot be opened, path is blocked and closes.Meanwhile the inlet pressure of the second check valve 22 is because being opened more than instrument air pipe 20 pressure, and nitrogen enters into instrument air pipe 20, it is provided that the air pressure of 5.0bar, substitutes compression air and maintains the combustion system control normal aperture of valve.Burn gun burner normally will not stop working.When compressed air pressure recovers supply (reaching about 5.5bar), because recovering compressed air pressure (about 5.5bar) > state of emergent nitrogen pressure (about 5.0bar), first check valve 12 is opened, second check valve 22 is closed, emergency nitrogen stops, and recovers normally compressed air for gaseity.
This utility model also provides for a kind of glass substrate kiln combustion system, and wherein, glass substrate kiln combustion system includes the glass substrate anti-stall pipeline of kiln combustion system mentioned above.
Preferred implementation of the present utility model is described in detail above in association with accompanying drawing; but; this utility model is not limited to the detail in above-mentioned embodiment; in technology concept of the present utility model; the technical solution of the utility model can being carried out multiple simple variant, these simple variant belong to protection domain of the present utility model.
It is further to note that, each concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, it is possible to be combined by any suitable mode, in order to avoid unnecessary repetition, various possible compound modes are no longer illustrated by this utility model separately.
Additionally, can also carry out combination in any between various different embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (6)
1. the glass substrate anti-stall pipeline of kiln combustion system, including for being connected to the instrument supply air line (10) on air compressor machine, for being connected to the instrument air pipe (20) on tray for combustion, described instrument air pipe (20) is connected with described instrument supply air line (10), described instrument supply air line (10) is provided with the first air relief valve (11), it is characterized in that, the emergent gas piping (30) with emergent air accumulator also it is communicated with between described instrument supply air line (10) and described instrument air pipe (20), this emergent gas piping (30) is provided with the second air relief valve (21) being positioned at described emergent air accumulator downstream and the second check valve (22) being positioned at this second air relief valve (21) downstream, the decompressed pressure of described second air relief valve (21) is less than the decompressed pressure of described first air relief valve (11), described second check valve (22) can allow for gas and flows away from described second air relief valve (21).
2. the glass substrate anti-stall pipeline of kiln combustion system according to claim 1, it is characterized in that, being additionally provided with the first check valve (12) being positioned at described first air relief valve (11) downstream on described instrument supply air line (10), this first check valve (12) can allow for gas and flows away from described first air relief valve (11).
3. the glass substrate anti-stall pipeline of kiln combustion system according to claim 1, it is characterised in that the gas stored in described emergent air accumulator is liquid nitrogen.
4. the glass substrate anti-stall pipeline of kiln combustion system according to claim 1, it is characterized in that, the decompressed pressure of described first air relief valve (11) ranges for 5.3-5.9bar, and the decompressed pressure of described second air relief valve (21) ranges for 4.8-5.1bar.
5. the glass substrate anti-stall pipeline of kiln combustion system according to claim 4, it is characterised in that the decompressed pressure of described first air relief valve (11) is 5.5bar, and the decompressed pressure of described second air relief valve (21) is 5.0bar.
6. a kiln combustion system, it is characterised in that described kiln combustion system includes the glass substrate anti-stall pipeline of kiln combustion system according to any one of claim 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521131756.6U CN205347191U (en) | 2015-12-29 | 2015-12-29 | Glass substrate kiln combustion system and prevent flame -out pipeline thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521131756.6U CN205347191U (en) | 2015-12-29 | 2015-12-29 | Glass substrate kiln combustion system and prevent flame -out pipeline thereof |
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| CN205347191U true CN205347191U (en) | 2016-06-29 |
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| CN201521131756.6U Active CN205347191U (en) | 2015-12-29 | 2015-12-29 | Glass substrate kiln combustion system and prevent flame -out pipeline thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108218197A (en) * | 2018-03-28 | 2018-06-29 | 深圳市创世纪机械有限公司 | Nitrogen system and glass heat bender |
-
2015
- 2015-12-29 CN CN201521131756.6U patent/CN205347191U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108218197A (en) * | 2018-03-28 | 2018-06-29 | 深圳市创世纪机械有限公司 | Nitrogen system and glass heat bender |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Glass substrate kiln combustion system and prevent flame -out pipeline thereof Effective date of registration: 20200713 Granted publication date: 20160629 Pledgee: Beijing State Owned Financial Leasing Co., Ltd Pledgor: WUHU TUNGHSU PHOTOELECTRIC SCIENCE AND TECHNOLOGY Co.,Ltd. Registration number: Y2020990000738 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |