CN111911954A - Natural gas quantitative control system for float glass production line - Google Patents
Natural gas quantitative control system for float glass production line Download PDFInfo
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- CN111911954A CN111911954A CN202010989045.1A CN202010989045A CN111911954A CN 111911954 A CN111911954 A CN 111911954A CN 202010989045 A CN202010989045 A CN 202010989045A CN 111911954 A CN111911954 A CN 111911954A
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- Prior art keywords
- valve body
- air outlet
- shaft
- communicated
- pipe
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/02—Regulating fuel supply conjointly with air supply
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/235—Heating the glass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K5/00—Feeding or distributing other fuel to combustion apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/14—Arrangements of heating devices
- F27B14/143—Heating of the crucible by convection of combustion gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K5/00—Feeding or distributing other fuel to combustion apparatus
- F23K5/002—Gaseous fuel
- F23K5/005—Gaseous fuel from a central source to a plurality of burners
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2235/00—Valves, nozzles or pumps
- F23N2235/12—Fuel valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2239/00—Fuels
- F23N2239/04—Gaseous fuels
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The invention provides a natural gas quantitative control system of a float glass production line, and belongs to the technical field of float glass production equipment. The rotary valve is a spiral flow deflector arranged on the outer wall of the rotating shaft, an air inlet joint and an air outlet joint are respectively arranged on the side wall of the valve body, the air inlet joint is communicated with the upper end of an inner cavity of the valve body, the air outlet joint is communicated with the upper end of the valve body, the rotating shaft is fixedly connected with an output shaft of the control motor, the rotary valve is rotatably connected in the valve body, the air inlet joint is communicated with the main pipe, the air outlet joint is communicated with the air outlet end of the branch pipe, and a shell and the valve body of the control motor are both fixed on the mounting frame; and a pressure sensor is arranged on the branch pipe close to one end of the air outlet joint. The invention has the advantages of improving the control precision of the gas transmission pressure of each branch pipe and the like.
Description
Technical Field
The invention belongs to the technical field of float glass production equipment, and relates to a natural gas quantitative control system of a float glass production line.
Background
The melting furnace is one of three hot working equipments in the float glass production equipment. The melting process of the melting furnace requires a large amount of natural gas as a combustion medium. The cost of natural gas accounts for about 1/3 of the total cost of glass enterprises, and the saving of the cost of natural gas is a big problem in the industry at present.
Because the statistical measurement of the natural gas is a full-line measurement mode, the measurement in different areas can not be carried out, the accuracy of the independent control of each flame gun is low, particularly, the temperature control of the flame gun at the edge part in the production process of the super-thick glass has great influence on the forming of the glass, although the temperature of the area can be monitored by the temperature sensor at the corresponding part of the flame gun, and then the natural gas inlet pressure (namely the air inflow) is reversely controlled, the timeliness of the control process is poor, the outlet pressure of a natural gas main pipe of a kiln can be influenced by the change of the flow of any branch pipe, the inlet pressure of other branch pipes can be influenced by the gas pressure of the gas main pipe, and the gas pressure of each branch pipe also needs to; because the flow of each branch is interfered with each other, and under the condition that the flow of each branch needs accurate control, the current full-line metering control mode, not only the temperature control precision is lower, has the problem such as the natural gas is extravagant and regional quantity can't be monitored moreover, makes the natural gas quantity in each region can't regard as the reference index of glass production technology improvement.
Disclosure of Invention
The invention aims to provide a quantitative control system for natural gas in a float glass production line aiming at the problems in the prior art, and the technical problem to be solved by the invention is how to accurately control the outlet pressure of a branch pipe.
The purpose of the invention can be realized by the following technical scheme: a natural gas quantification control system for a float glass production line is characterized by comprising a header pipe and a plurality of branch pipes connected with the header pipe in parallel, wherein a control valve is arranged on each branch pipe, each control valve comprises a mounting frame, a tubular valve body, a control motor, a rotating shaft and a rotating valve outside the rotating shaft, each rotating valve is a spiral flow deflector arranged on the outer wall of the rotating shaft, an air inlet connector and an air outlet connector are respectively arranged on the side wall of each valve body, the air inlet connectors are communicated with the upper end of the inner cavity of the valve body, the air outlet connectors are communicated with the upper end of the valve body, the rotating shaft is fixedly connected with an output shaft of the control motor, the rotating valves are rotatably connected in the valve bodies, the air inlet connectors are communicated with the header pipe, the air outlet connectors are communicated with the air outlet ends of the; and a pressure sensor is arranged on the branch pipe close to one end of the air outlet joint.
Furthermore, the rotating shaft comprises a first half shaft and a second half shaft, the first half shaft is connected with one end of the output shaft of the control motor, the second half shaft is connected with the first half shaft, the lower end of the first half shaft is provided with an inserted rod, the upper end of the second half shaft is provided with an insertion pipe, the inserted rod is rotatably connected in the insertion pipe, and a torsion spring is connected between the inserted rod and the insertion pipe; the guide vane comprises an upper half section connected to the first half shaft and a lower half section connected to the second half shaft.
The control motor rotates to enable the flow deflector to rotate, the flow deflector rotates in the forward direction to extrude gas entering the valve body and then outputs the gas in a pressurization mode, the flow deflector rotates in the reverse direction to increase resistance to the gas entering the valve body and further enables the gas to output in a decompression mode, the pressure sensor on the branch pipe behind the gas outlet joint monitors the pressure of natural gas supplied to the fire gun, when the pressure sensor monitors that the pressure of the natural gas supplied to the fire gun is not a set pressure value, the control motor rotates at a certain rotating speed in the forward direction or the reverse direction through giving an instruction for controlling the rotating direction and the rotating speed of the motor, and the pressure of the natural gas supplied to one end of the fire gun tends to a set value.
All set up the control valve that can adjust this branch pipe pressure of giving vent to anger on each branch pipe to make the pressure variation of house steward or the pressure variation of each branch pipe can not interfere the output pressure of branch pipe, perhaps can eliminate each branch pipe and house steward interference to output pressure through the fact control of control valve.
At one end of a fire gun, the natural gas flow and the air input of combustion air are in direct proportion correlation, in order to alleviate the adverse effect caused by sudden pressure change at one end of the fire gun, a rotating shaft is arranged into a first half shaft and a second half shaft, the first half shaft is controlled by a control motor, when the rotating speed of the control motor changes suddenly, the second rotating shaft and the lower half section of a flow deflector positioned on the second rotating shaft have a rotating speed difference with the upper half section due to inertia force, and the rotating speed difference can interfere air pressure interference caused by the rotating speed change of the rotating shaft, so that the pressure at the air outlet end of a valve body is slowly adjusted until the first rotating shaft and the second rotating shaft are synchronous; the gas pressure change is alleviated, the gas supply amount of the natural gas can not be suddenly changed, the gas amount of the combustion-supporting gas can not be suddenly changed, the safety and the reliability are improved, and meanwhile, the natural gas is saved.
Drawings
Fig. 1 is a schematic configuration diagram of the present control system.
Fig. 2 is a schematic view of the structure of the control valve.
Fig. 3 is a schematic view of the internal structure of the control valve.
Fig. 4 is a cross-sectional view of the control valve.
In the figure, 1, a header pipe; 2. a branch pipe; 3. a control valve; 31. a valve body; 32. controlling the motor; 33. a rotating shaft; 34. a flow deflector; 35. an air inlet joint; 36. an air outlet joint; 37. a pressure sensor; 4. a mounting frame; 51. a first half shaft; 52. a second half shaft; 53. inserting a rod; 54. inserting a tube; 55. a torsion spring.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1 to 4, the device comprises a header pipe 1 and a plurality of branch pipes 2 connected in parallel with the header pipe 1, a control valve 3 is arranged on each branch pipe 2, each control valve 3 comprises a mounting frame 4, a tubular valve body 31, a control motor 32, a rotating shaft 33 and a rotating valve outside the rotating shaft 33, each rotating valve is a spiral flow deflector 34 arranged on the outer wall of the corresponding rotating shaft 33, an air inlet connector 35 and an air outlet connector 36 are respectively arranged on the side wall of each valve body 31, each air inlet connector 35 is communicated with the upper end of the inner cavity of the corresponding valve body 31, each air outlet connector 36 is communicated with the upper end of the corresponding valve body 31, the rotating shaft 33 is fixedly connected with an output shaft of the corresponding control motor 32, each rotating valve is rotatably connected in the corresponding valve body 31, each air inlet connector 35 is communicated with the corresponding header pipe; a pressure sensor 37 is provided on the branch pipe 2 near one end of the outlet joint 36.
The rotating shaft 33 comprises a first half shaft 51 connected with one end of the output shaft of the control motor 32 and a second half shaft 52 connected with the first half shaft 51, the lower end of the first half shaft 51 is provided with an inserting rod 53, the upper end of the second half shaft 52 is provided with an inserting pipe 54, the inserting rod 53 is rotatably connected in the inserting pipe 54, and a torsion spring 55 is connected between the inserting rod 53 and the inserting pipe 54; the guide vane 34 comprises an upper half connected to the first half-shaft 51 and a lower half connected to the second half-shaft 52.
The motor 32 is controlled to rotate, the deflector 34 is made to rotate, the deflector 34 rotates in the forward direction to extrude the gas entering the valve body 31 and then output the gas in a pressurization mode, the deflector 34 rotates in the reverse direction to increase resistance to the gas entering the valve body 31 and further output the gas in a decompression mode, the pressure sensor 37 on the branch pipe 2 behind the gas outlet joint 36 monitors the natural gas pressure supplied to the fire gun, when the pressure sensor 37 monitors that the natural gas pressure supplied to the fire gun is not a set pressure value, the motor 32 is made to rotate at a certain forward or reverse rotating speed by giving an instruction for controlling the rotating direction and the rotating speed of the motor 32, and the pressure of the natural gas supplied to one end of the fire gun is made to be close to a set value.
Each branch pipe 2 is provided with a control valve 3 capable of adjusting the outlet pressure of the branch pipe 2, so that the pressure change of the main pipe 1 or the pressure change of each branch pipe 2 does not interfere with the output pressure of the branch pipe 2, or the interference of each branch pipe 2 and the main pipe 1 on the output pressure can be eliminated through the fact control of the control valve 3.
At one end of the fire gun, the natural gas flow and the air intake quantity of combustion air are in direct proportion, in order to alleviate the adverse effect caused by sudden pressure change at one end of the fire gun, the rotating shaft 33 is arranged into a first half shaft 51 and a second half shaft 52, the first half shaft 51 is controlled by the control motor 32, when the rotating speed of the control motor 32 changes suddenly, the second rotating shaft 33 and the lower half section of the deflector 34 positioned on the second rotating shaft 33 have a rotating speed difference with the upper half section due to inertia force, and the rotating speed difference can interfere air pressure interference caused by the rotating speed change of the rotating shaft 33, so that the pressure at the air outlet end of the valve body 31 is slowly adjusted until the first rotating shaft 33 and the second rotating shaft 33 are synchronous; the gas pressure change is alleviated, the gas supply amount of the natural gas can not be suddenly changed, the gas amount of the combustion-supporting gas can not be suddenly changed, the safety and the reliability are improved, and meanwhile, the natural gas is saved.
Under the torsional spring natural state, first half section links up with second half section, and the air current can be smoothly derived, when there is the difference in rotational speed first semi-axis and second semi-axis, perhaps when having torsion between first semi-axis and the second semi-axis, the air current smoothness receives the interference, and this process just ends until first semi-axis and second semi-axis are synchronous, makes the change of pressure value of output pressure have a transition period, avoids atmospheric pressure catastrophe.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (2)
1. The natural gas quantification control system for the float glass production line is characterized by comprising a header pipe (1) and a plurality of branch pipes (2) connected with the header pipe (1) in parallel, wherein a control valve (3) is arranged on each branch pipe (2), each control valve (3) comprises a mounting frame (4), a tubular valve body (31), a control motor (32), a rotating shaft (33) and a rotating valve outside the rotating shaft (33), each rotating valve is a spiral flow deflector (34) arranged on the outer wall of the rotating shaft (33), an air inlet connector (35) and an air outlet connector (36) are respectively arranged on the side wall of the valve body (31), the air inlet connector (35) is communicated with the upper end of the inner cavity of the valve body (31), the air outlet connector (36) is communicated with the upper end of the valve body (31), the rotating shaft (33) is fixedly connected with an output shaft of the control motor (32), and the rotating valves are rotatably connected in the valve body (31), the air inlet connector (35) is communicated with the main pipe (1), the air outlet connector (36) is communicated with the air outlet end of the branch pipe (2), and the shell of the control motor (32) and the valve body (31) are fixed on the mounting frame (4); a pressure sensor (37) is arranged on the branch pipe (2) close to one end of the air outlet joint (36).
2. The float glass production line natural gas quantitative control system as claimed in claim 1, wherein the rotating shaft (33) comprises a first half shaft (51) connected with one end of the output shaft of the control motor (32) and a second half shaft (52) connected with the first half shaft (51), the lower end of the first half shaft (51) is provided with an inserted rod (53), the upper end of the second half shaft (52) is provided with an inserted pipe (54), the inserted rod (53) is rotatably connected in the inserted pipe (54), and a torsion spring (55) is connected between the inserted rod (53) and the inserted pipe (54); the guide vane (34) comprises an upper half section connected to the first half shaft (51) and a lower half section connected to the second half shaft (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010989045.1A CN111911954A (en) | 2020-09-18 | 2020-09-18 | Natural gas quantitative control system for float glass production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010989045.1A CN111911954A (en) | 2020-09-18 | 2020-09-18 | Natural gas quantitative control system for float glass production line |
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| Publication Number | Publication Date |
|---|---|
| CN111911954A true CN111911954A (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010989045.1A Pending CN111911954A (en) | 2020-09-18 | 2020-09-18 | Natural gas quantitative control system for float glass production line |
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| Country | Link |
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| CN (1) | CN111911954A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113149407A (en) * | 2021-04-19 | 2021-07-23 | 信义节能玻璃（芜湖）有限公司 | Natural gas automatic control system of float glass production flow |
-
2020
- 2020-09-18 CN CN202010989045.1A patent/CN111911954A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113149407A (en) * | 2021-04-19 | 2021-07-23 | 信义节能玻璃（芜湖）有限公司 | Natural gas automatic control system of float glass production flow |
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