CN216790173U - Gas control system for glass microfiber production - Google Patents
Gas control system for glass microfiber production Download PDFInfo
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- CN216790173U CN216790173U CN202123430811.XU CN202123430811U CN216790173U CN 216790173 U CN216790173 U CN 216790173U CN 202123430811 U CN202123430811 U CN 202123430811U CN 216790173 U CN216790173 U CN 216790173U
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Abstract
The utility model discloses a gas control system for glass microfiber production, which comprises a natural gas pipeline, an air pipeline, a burner, a temperature transmitter, a pulse igniter and a PLC (programmable logic controller); the natural gas pipeline and the air pipeline are connected with the combustor, and the natural gas pipeline is provided with a natural gas flowmeter, a pressure transmitter, a natural gas cut-off valve and a natural gas regulating valve; the air pipeline is provided with an air flow meter, a pressure transmitter, an air cut-off valve and an air regulating valve; the temperature transmitter is arranged on the combustor, and the pulse igniter is connected with the combustor; the PLC controller is respectively connected with the natural gas flowmeter, the natural gas cut-off valve, the natural gas regulating valve, the air flow meter, the pressure transmitter, the air cut-off valve, the air regulating valve, the temperature transmitter and the pulse igniter. The utility model can realize the automatic control of the whole process of starting, igniting, running and flameout of the burner, effectively ensure the stability of flame and further effectively ensure the product quality.
Description
Technical Field
The utility model relates to the technical field of glass microfiber production equipment, in particular to a gas control system for glass microfiber production.
Background
At present, the production of glass microfiber mainly comprises a flame blowing method, wherein a crucible wire drawing method is generally adopted in the flame blowing method, glass balls are required to be secondarily melted, molten glass flows out from a leakage hole of a crucible and is drawn into primary filaments, and the primary filaments enter a high-temperature high-speed flame area sprayed from a combustion chamber to form the glass microfiber. In the flame injection process, factors such as temperature, speed, long and short states of flame of a burner, stability of the flame and the like have a decisive effect on the quality of the glass microfiber, and gas parameters such as gas quantity, air-fuel ratio and the like of the burner are decisive factors influencing the temperature, speed, long and short states of the flame and the stability of the flame. At present, the control of gas parameters such as gas quantity, air-fuel ratio and the like of a burner for producing the glass microfiber mainly depends on manual monitoring and manual adjustment, the adjustment precision is different due to different self experiences or skill levels of operators, flame sprayed by the burner cannot be kept stable easily, the consistency and stability of the quality of the glass microfiber are influenced while gas resources are wasted, and the technological conditions required for producing the high-quality glass microfiber are difficult to meet.
Therefore, it is necessary to develop a gas control system for producing glass microfibers, which can automatically and precisely control parameters such as gas amount, air amount, and air-fuel ratio of a burner.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a gas control system for producing glass microfiber, which can realize the automatic control of the whole process of starting, igniting, running and flameout of a burner, can effectively adjust the temperature, speed and state of flame of the burner, and ensure the stability of the flame of the burner, thereby effectively ensuring the long-term stability and consistency of the product quality.
In order to solve the problems, the technical scheme adopted by the utility model is as follows:
a gas control system for glass microfiber production comprises a natural gas pipeline, an air pipeline, a burner, a temperature transmitter, a pulse igniter and a PLC (programmable logic controller); the natural gas pipeline is connected with a natural gas inlet of the combustor, a natural gas flowmeter, a pressure transmitter, three natural gas cut-off valves and a natural gas regulating valve are arranged on the natural gas pipeline, and the natural gas regulating valve is arranged between the second natural gas cut-off valve and the third natural gas cut-off valve; the air pipeline is connected with an air inlet of the combustor, an air flow meter, a pressure transmitter, two air shut-off valves and an air regulating valve are arranged on the air pipeline, and the air regulating valve is arranged between the two air shut-off valves; the temperature transmitter is arranged on the combustor, and the pulse igniter is connected with the combustor; the PLC controller is respectively connected with the natural gas flowmeter, the natural gas cut-off valve, the natural gas regulating valve, the air flow meter, the pressure transmitter, the air cut-off valve, the air regulating valve, the temperature transmitter and the pulse igniter.
In a preferred embodiment of the present invention, a first bypass line is connected in parallel to each end of the first natural gas shutoff valve on the natural gas pipeline, and a bypass shutoff valve is provided on the first bypass line.
In a preferred embodiment of the present invention, a second bypass pipeline is connected in parallel to both ends of the second natural gas shutoff valve and the third natural gas shutoff valve on the natural gas pipeline, and a bypass ball valve is disposed on the second bypass pipeline.
As a preferred embodiment of the present invention, a pressure gauge is disposed between the natural gas pipeline and the pressure transmitter mounted on the natural gas pipeline.
In a preferred embodiment of the present invention, a third bypass line is connected in parallel to both ends of the two air shut-off valves on the air pipeline, and a bypass ball valve is disposed on the third bypass line.
The burner also comprises a flame detector which is arranged in the burner and is connected with the PLC control cabinet.
Further preferably, the flame detector is an infrared light flame detector.
In a preferred embodiment of the present invention, the natural gas flowmeter is a vortex flowmeter, and the natural gas flowmeter is a vortex shedding flowmeter; the natural gas regulating valve is a pneumatic regulating ball valve, and the air regulating valve is a pneumatic regulating butterfly valve.
As a preferred embodiment of the present invention, a touch display is provided on the PLC controller.
Compared with the prior art, the utility model has the beneficial effects that:
the gas control system of the utility model realizes the automatic control of the whole process of starting, igniting, running and flameout of the burner by adopting the PLC, controls the gas quantity, the air quantity and the air-fuel ratio by the PLC, enables the burning control of the burner to be more accurate, can effectively adjust the temperature, the speed and the length state of flame of the burner, ensures the stability of the flame of the burner, fully meets the thermodynamic conditions and the kinetic conditions required for producing glass microfibers of different varieties and different specifications, effectively ensures the long-term stability and the consistency of the product quality, saves energy, reduces consumption, reduces the labor intensity of workers, and well avoids the defect that the flame cannot be kept stable due to the manual operation and manual adjustment in the prior art.
Drawings
FIG. 1 is a schematic structural diagram of a gas control system according to the present invention;
the reference numbers illustrate: 1. a natural gas pipeline; 2. an air duct; 3. a burner; 4. a temperature transmitter; 5. a pulse igniter; 6. a PLC controller; 7. a natural gas flow meter; 8. a pressure transmitter; 9. a natural gas shut-off valve; 10. a natural gas regulating valve; 11. an air flow meter; 12. an air shut-off valve; 13. an air regulating valve; 14. a first bypass line; 15. a bypass cut-off valve; 16. a second bypass line; 17. a bypass ball valve; 18. a third bypass line; 19. a pressure gauge; 20. a flame detector.
Detailed Description
The utility model is described in further detail below with reference to the drawings and the detailed description.
As shown in fig. 1, the gas control system provided by the utility model is suitable for glass microfiber production, and the system automatically controls the regulating valves or switching valves on the natural gas pipeline 1 and the air pipeline 2 in the system through the PLC controller 6, thereby realizing accurate control of the gas quantity, the air quantity and the air-fuel ratio of the burner 3, and effectively regulating the temperature, the speed and the length state of the flame of the burner 3, thereby reducing manual error and improving product quality. Specifically, the gas control system includes a natural gas pipe 1, an air pipe 2, a burner 3, a temperature transmitter 4, a pulse igniter 5, and a PLC controller 6. The natural gas pipeline 1 is connected with a natural gas inlet of the combustor 3, a natural gas flowmeter 7, a pressure transmitter 8, three natural gas shut-off valves 9 and a natural gas regulating valve 10 are arranged on the natural gas pipeline 1, and the natural gas regulating valve 10 is arranged between a second natural gas shut-off valve 9 and a third natural gas shut-off valve 9 in the natural gas supply direction; a pressure gauge 19 is arranged between the natural gas pipeline 1 and the pressure transmitter 8. The air pipe 2 is connected with an air inlet of the burner 3, the air pipe 2 is provided with an air flow meter 11, a pressure transmitter 8, two air shut-off valves 12 and an air regulating valve 13, and the air regulating valve 13 is arranged between the two air shut-off valves 12. The temperature transmitter 4 is installed on the combustor 3 and used for outputting a standard signal with the measured temperature of 4-20 ma to the PLC 6. The pulse igniter 5 is connected to the burner 3 and serves as an ignition means for the gas. Natural gas flowmeter 7, natural gas trip valve 9, natural gas governing valve 10, air flowmeter 11, pressure transmitter 8, manometer 19, air trip valve 12, air control valve 13, temperature transmitter 4 and pulse igniter 5 all link to each other with PLC controller 6, and natural gas trip valve 9, natural gas governing valve 10, air trip valve 12, air control valve 13 and pulse igniter 5 all are controlled by PLC controller 6. The surface of the PLC controller 6 is provided with a touch display, the touch display is connected with a PLC in the PLC controller 6 through a communication cable, and the touch display screen is used for feeding back and displaying various data parameters for observation, operation and recording of an operator and can perform corresponding control operation. Preferably, the PLC controller 6 of the present invention is a DCS system; the natural gas flowmeter 7 is a vortex precession flowmeter, and the air flowmeter 11 is a vortex shedding flowmeter; the natural gas regulating valve 10 is a pneumatic regulating ball valve, and the air regulating valve 13 is a pneumatic regulating butterfly valve.
Furthermore, a first bypass pipeline 14 is connected in parallel to two ends of the first natural gas cut-off valve 9 on the natural gas pipeline 1, and a bypass cut-off valve 15 is arranged on the first bypass pipeline 14. In the event of a failure of the PLC control cabinet, the natural gas supply can be safely shut off by manually closing the bypass cut-off valve 15. Correspondingly, a second bypass pipeline 16 is connected in parallel at two ends of the second natural gas cut-off valve 9 and the third natural gas cut-off valve 9 on the natural gas pipeline 1, and a bypass ball valve 17 is arranged on the second bypass pipeline 16; and a third bypass pipeline 18 is connected in parallel at two ends of the two air shut-off valves 12 on the air pipeline 2, and a bypass ball valve 17 is arranged on the third bypass pipeline 18. When the natural gas regulating valve 10 or the air regulating valve 13 fails, the second bypass pipeline 16 and the third bypass pipeline 18 can ensure normal natural gas and air supply of the combustor 3, which is beneficial to maintaining the stability of flame and avoiding flameout.
The gas control system also comprises a flame detector 20 for detecting the flame of the combustor 3, the flame detector 20 is arranged in the combustor 3 or the detection point of the flame detector 20 is close to the combustion chamber, and the flame detector 20 is connected with the PLC control cabinet. Further preferably, the flame detector 20 is an infrared light flame detector 20.
As can be seen from the above, the present invention collects, records, monitors and operates the data of the controlled object in real time by using the PLC controller 6 and using the touch display screen, and can perform local fault maintenance of the system and four ways of configuration on-line modification, and at the same time, control functions of different devices can be conveniently distributed to different suitable control units according to the devices, and the operator can perform modular function modification, maintenance, downloading and debugging on a single control unit as required. When in production, when the energy of the combustor 3 needs to be changed, the flame can be accurately controlled by changing the gas quantity, the air quantity and the air-fuel ratio, the flame of the combustor 3 is ensured, thermodynamic conditions and kinetic conditions required by glass microfibers with different components and different specifications are fully met, and the long-term stability and consistency of the product quality are ensured.
This embodiment sets up four sets of independent gas control systems to carry out several kinds of controls through a PLC controller 6, every set of system independent operation, any one set of system is reported to the police, is adjusted, is interlocked, does not influence other systems independent operation, and every set of system operation control principle is as follows:
(1) and (3) ignition process: pressing an ignition button on the PLC 6 → operating the low-flow air draft fan at the rear part of the burner 3 (the operation time is more than or equal to 5s) → operating the pulse igniter 5 → opening the natural gas regulating valve 10 at a low flow rate (simultaneously opening the air regulating valve 13) → detecting the flame by the flame detector 20 → stopping the operation of the low-flow air draft fan at the rear part of the burner 3 (the ignition program is stopped).
(2) Misfire/gas off flow: the flame detector 20 detects that flame is not detected → the natural gas cut-off valve 9 cuts off natural gas intake in an interlocking manner → the small-flow exhaust fan at the rear part of the combustor 3 runs (the running time is more than or equal to 10 s); when natural gas shutoff valve 9 is closed, air adjustment valve 13 is not adjusted with the natural gas flow rate and is immediately opened to the maximum opening degree. When the natural gas shut-off valve 9 is in an open state, the air-natural gas flow ratio adjustment is effective.
(3) And (4) normal operation and regulation flow: the air regulating valve 13 is adjusted in a ratio of 1:10 according to the opening degree (natural gas flow rate) of the system input natural gas regulating valve 10. And a later-stage user needs to make a flame strength/temperature comparison table which can be provided by different valve openings of each natural gas pressure section according to actual requirements so as to facilitate control and operation.
(4) Power off (air off) system shutdown procedure: when a power failure condition occurs suddenly, the air pipeline 2 is in low-pressure alarm → the natural gas cut-off valve 9 is interlocked to cut off the natural gas intake.
(5) A shutdown process: an operator in the control system closes the natural gas cut-off valve 9 → the small-flow exhaust fan at the rear part of the combustor 3 runs (the running time is more than or equal to 10 s).
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (9)
1. A glass is gas control system for microfiber production which characterized in that: the device comprises a natural gas pipeline, an air pipeline, a burner, a temperature transmitter, a pulse igniter and a PLC (programmable logic controller); the natural gas pipeline is connected with a natural gas inlet of the combustor, a natural gas flowmeter, a pressure transmitter, three natural gas cut-off valves and a natural gas regulating valve are arranged on the natural gas pipeline, and the natural gas regulating valve is arranged between the second natural gas cut-off valve and the third natural gas cut-off valve; the air pipeline is connected with an air inlet of the combustor, an air flow meter, a pressure transmitter, two air shut-off valves and an air regulating valve are arranged on the air pipeline, and the air regulating valve is arranged between the two air shut-off valves; the temperature transmitter is arranged on the combustor, and the pulse igniter is connected with the combustor; the PLC controller is respectively connected with the natural gas flowmeter, the natural gas cut-off valve, the natural gas regulating valve, the air flow meter, the pressure transmitter, the air cut-off valve, the air regulating valve, the temperature transmitter and the pulse igniter.
2. The gas control system for glass microfiber production according to claim 1, wherein: the natural gas pipeline is provided with a first bypass pipeline connected in parallel at two ends of the first natural gas stop valve, and the first bypass pipeline is provided with a bypass stop valve.
3. The gas control system for glass microfiber production according to claim 1, wherein: and the two ends of the second natural gas cut-off valve and the third natural gas cut-off valve are connected with a second bypass pipeline in parallel on the natural gas pipeline, and a bypass ball valve is arranged on the second bypass pipeline.
4. The gas control system for glass microfiber production according to claim 1, wherein: and a pressure gauge is arranged between the natural gas pipeline and the pressure transmitter arranged on the natural gas pipeline.
5. The gas control system for glass microfiber production according to claim 1, wherein: and the two ends of the two air cut-off valves on the air pipeline are connected with a third bypass pipeline in parallel, and a bypass ball valve is arranged on the third bypass pipeline.
6. The gas control system for glass microfiber production according to claim 1, wherein: the burner is characterized by further comprising a flame detector, wherein the flame detector is arranged in the burner and connected with the PLC control cabinet.
7. The gas control system for glass microfiber production according to claim 6, wherein: the flame detector is an infrared flame detector.
8. The gas control system for glass microfiber production according to claim 1, wherein: the natural gas flowmeter is a vortex precession flowmeter, and the air flowmeter is a vortex street flowmeter; the natural gas regulating valve is a pneumatic regulating ball valve, and the air regulating valve is a pneumatic regulating butterfly valve.
9. The gas control system for glass microfiber production according to claim 1, wherein: and a touch display is arranged on the PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123430811.XU CN216790173U (en) | 2021-12-30 | 2021-12-30 | Gas control system for glass microfiber production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123430811.XU CN216790173U (en) | 2021-12-30 | 2021-12-30 | Gas control system for glass microfiber production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216790173U true CN216790173U (en) | 2022-06-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123430811.XU Active CN216790173U (en) | 2021-12-30 | 2021-12-30 | Gas control system for glass microfiber production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216790173U (en) |
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2021
- 2021-12-30 CN CN202123430811.XU patent/CN216790173U/en active Active
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