CN213334372U - Combustion heating system for mixing natural gas and air - Google Patents
Combustion heating system for mixing natural gas and air Download PDFInfo
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- CN213334372U CN213334372U CN202021473149.9U CN202021473149U CN213334372U CN 213334372 U CN213334372 U CN 213334372U CN 202021473149 U CN202021473149 U CN 202021473149U CN 213334372 U CN213334372 U CN 213334372U
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Abstract
The utility model relates to a combustion heating system for mixing natural gas and air, which comprises a gas mixing pipeline, a burner and a PLC control system; the gas mixing pipeline comprises a gas electromagnetic valve, and the burner comprises an igniter and a flame detector; the signal output end of the PLC control system is respectively connected with the signal receiving ends of the gas electromagnetic valve and the igniter, the signal receiving end of the PLC control system is connected with the signal output end of the flame detector, and the gas mixing pipeline is connected with the combustor through a pipeline. According to the utility model discloses a burning heating system of mixed natural gas and air realizes igniteing, closes the fire to control burning flame through adjusting two kinds of gaseous flow and pressure size, adjusts flame colour and height, makes the gas mixture fully burn, has improved the combustion efficiency of natural gas, the better environment that has protected, reduced operating personnel's intensity of labour, improved production efficiency and security.
Description
Technical Field
The utility model belongs to gas combustion heating field, more specifically, the utility model relates to a combustion heating system of mixed natural gas and air.
Background
In the continuous casting production of aluminum alloy or magnesium alloy, the mold is usually preheated by using the combustion of natural gas, air is used as an auxiliary combustion medium, and a burner is not specially designed, but a plurality of small holes with equal intervals are simply formed in the upward direction of a gas pipeline to serve as flame injection holes. The ignition process is ignited by manual open fire, so that certain potential safety hazard exists; the temperature of the die is measured manually and periodically, and if the heating is stopped due to accident, an operator cannot know the temperature at the first time, so that the die and the like are not preheated, and waste products of a certain batch are generated; when the heating speed is not ideal, the problem is usually solved by manually adjusting the size of a valve to increase the natural gas flow or enlarge a flame injection hole; meanwhile, the air contains certain moisture and dust, so that the natural gas is insufficiently combusted, the efficiency is low and the environment is polluted.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a burning heating system of mixed natural gas and air, realize automatic ignition, shut off fire and burning flame control, improved the combustion efficiency of natural gas.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a combustion heating system for mixing natural gas and air comprises a gas mixing pipeline, a combustor and a PLC control system; the gas mixing pipeline comprises a gas electromagnetic valve, and the burner comprises an igniter and a flame detector; the signal output end of the PLC control system is respectively connected with the signal receiving ends of the gas electromagnetic valve and the igniter, the signal receiving end of the PLC control system is connected with the signal output end of the flame detector, and the gas mixing pipeline is connected with the combustor through a pipeline.
Preferably, the system further comprises a temperature online monitoring device, and a signal output end of the temperature online monitoring device is connected with a signal receiving end of the PLC control system.
Preferably, the system further comprises a main device control system, and the signal output end and the signal receiving end of the PLC control system are respectively connected with the signal receiving end and the signal output end of the main device control system.
Preferably, the gas mixing pipeline comprises a compressed air pipeline, the compressed air pipeline is respectively connected with the natural gas pipeline and the mixed gas pipeline through a three-way joint, the compressed air pipeline is connected with a compressed air hose through a hose access port, and the mixed gas pipeline and the compressed air hose are directly connected to the combustor.
Preferably, the compressed air pipeline is sequentially connected with a ball valve, a pressure regulating valve, a valve with a pressure gauge and a button;
the natural gas pipeline is sequentially connected with a ball valve, a pressure regulating valve, a natural gas pressure regulating valve, a valve with a pressure gauge and a button, a natural gas electromagnetic valve and a check valve.
Preferably, the compressed air pipeline is further connected with a pressure switch and a fine adjustment valve, and the positions of the valve with the pressure gauge and the button and the pressure switch can be changed.
Preferably, the natural gas pipeline is further connected with a gas pressure switch and a fine adjustment valve, and the sequence of the valve with the pressure gauge and the button, the gas pressure switch and the fine adjustment valve can be changed.
Preferably, the natural gas pipeline may be replaced with a liquefied petroleum gas pipeline.
Compared with the prior art, the utility model discloses following beneficial effect has:
the combustion heating system of the utility model mixes the compressed air and the natural gas before combustion, which can effectively ensure that the two gases are mixed more fully; realize the intelligent control to whole burning heating system through PLC control system 14, realize igniteing, closing fire according to the actual measurement temperature on mould surface to control burning flame, through adjusting two kinds of gaseous flow and pressure size, adjust flame colour and height, make the mist fully burn, improved the combustion efficiency of natural gas, the better environment that has protected, reduced operating personnel's intensity of labour, improved production efficiency and security.
In the present invention, other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
FIG. 1 is a block diagram of a combustion heating system according to an embodiment of the present invention;
FIG. 2 is a piping diagram of a combustion heating system according to an embodiment of the present invention;
wherein: 1, compressing an air pipeline; 2 a natural gas pipeline; 3 a mixed gas pipeline; 4, a compressed air hose; 5, ball valve; 6 natural gas pressure regulating valve; 7 pressure regulating valve; 8, a valve with a pressure gauge and a button; 9 gas pressure switch; 10 gas electromagnetic valve; 11 a trim valve; 12 a check valve; 13 a pressure switch; 14 three-way joint, 15 hose inlet; 110 a burner; 111 an igniter; 112 a flame detector; 113 gas mixing line; 114 a PLC control system; 115 a master device control system; 116 temperature on-line monitoring device
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus consistent with certain aspects of the invention, as detailed in the following claims.
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and the embodiments.
As shown in fig. 1-2, an embodiment of the present invention provides a combustion heating system for mixing natural gas and air, including a gas mixing pipeline 113, a burner 110, and a PLC control system 114; the gas mixing pipeline 113 comprises a gas electromagnetic valve 10, and the burner 110 comprises an igniter 111 and a flame detector 112; the signal output end of the PLC control system 115 is respectively connected with the signal receiving ends of the gas electromagnetic valve 10 and the igniter 111, the signal receiving end of the PLC control system 114 is connected with the signal output end of the flame detector 112, and the gas mixing pipeline 113 is connected with the combustor 110 through a pipeline. The system further comprises a temperature online monitoring device 116, wherein a signal output end of the temperature online monitoring device 116 is connected with a signal receiving end of the PLC control system 114. The system further comprises a main device control system 115, and a signal output end and a signal receiving end of the PLC control system 114 are respectively connected with a signal receiving end and a signal output end of the main device control system 115. The gas mixing pipeline 113 comprises a compressed air pipeline 1, the compressed air pipeline 1 is respectively connected with a natural gas pipeline 2 and a mixed gas pipeline 3 through a three-way joint 14, the compressed air pipeline 1 is connected with an inlet 15 and a compressed air hose 4 through a hose, and the mixed gas pipeline 3 and the compressed air hose 4 are directly connected to the combustor 110. The compressed air pipeline 1 is sequentially connected with a ball valve 5, a pressure regulating valve 6, a valve 8 with a pressure gauge and a button; the natural gas pipeline 2 is sequentially connected with a ball valve 5, a pressure regulating valve 7, a natural gas pressure regulating valve 6, a valve 8 with a pressure gauge and a button, a natural gas electromagnetic valve 10 and a check valve 12. The compressed air pipeline 1 is also connected with a pressure switch 13 and a fine adjustment valve 11, and the positions of the valve 8 with the pressure gauge and the button and the pressure switch 13 can be changed. The natural gas pipeline 2 is also connected with a gas pressure switch 9 and a fine adjustment valve 11, and the sequence of the valve 8 with the pressure gauge and the button, the gas pressure switch 9 and the fine adjustment valve 11 can be changed. The natural gas pipeline 2 may be replaced with a liquefied petroleum gas pipeline.
The working principle is as follows: the combustion heating system works, detect the temperature on the surface of the mould through the online monitoring device 117 of the temperature, when the temperature is lower than the standard value, the online monitoring device 117 of the temperature outputs a signal for PLC control system 115, PLC control system sends a signal for gas solenoid valve 10 and igniter 111 after receiving the signal at the same time, the gas solenoid valve is opened, compressed air and natural gas become mixed gas after passing through three way connection 14, the mixed gas lets in the burner 110, the igniter 111 finishes igniting after receiving the signal, the compressed air that lets in the burner 110 through the compressed air hose 4 can play the combustion-supporting role, make the height of flame reach the required height. The flame detector 112 is responsible for detecting whether the gas is burning, and when the gas is not ignited or burning is interrupted, the flame detector 112 sends a signal to the PLC control system, and the PLC control system 114 controls the burner 110 to stop working and start detecting. The temperature of the mold surface can also be detected manually.
Wherein, the air is introduced into the compressed air pipeline 1, part of the compressed air meeting the standard is fully mixed with the natural gas through the three-way joint 14 finally through the regulation and detection of the pressure, and part of the compressed air is introduced into the combustor through the compressed air hose; the natural gas is introduced into the natural gas pipeline 2, filtered and pressure-regulated, and then fully mixed with the compressed air through the tee joint 14. The ball valve 5 may be closed when the combustion heating system is not operating or malfunctioning.
The PLC control system 114 may be externally connected to a main device control system 115, and the combustion heating system is controlled by the main device control system.
The combustion heating system for mixing the natural gas and the air mixes the compressed air and the natural gas before combustion, so that the two gases can be effectively and fully mixed; realize the intelligent control to whole burning heating system through PLC control system 14, realize igniteing, closing fire according to the actual measurement temperature on mould surface to control burning flame, through adjusting two kinds of gaseous flow and pressure size, adjust flame colour and height, make the mist fully burn, improved the combustion efficiency of natural gas, the better environment that has protected, reduced operating personnel's intensity of labour, improved production efficiency and security.
The above description is only exemplary of the invention, and is intended to enable those skilled in the art to understand and implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.
It is to be understood that the present invention is not limited to what has been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.
Claims (8)
1. A combustion heating system for mixing natural gas and air is characterized by comprising a gas mixing pipeline (113), a combustor (110) and a PLC control system (114);
the gas mixing pipeline (113) comprises a gas electromagnetic valve (10), and the burner (110) comprises an igniter (111) and a flame detector (112);
the signal output end of the PLC control system (114) is respectively connected with the signal receiving ends of the gas electromagnetic valve (10) and the igniter (111), the signal receiving end of the PLC control system (114) is connected with the signal output end of the flame detector (112), and the gas mixing pipeline (113) is connected with the combustor (110) through a pipeline.
2. A mixed natural gas and air fired heating system as claimed in claim 1 further comprising an on-line temperature monitoring device (116), the signal output of said on-line temperature monitoring device (116) being connected to the signal receiving end of the PLC control system (114).
3. A mixed natural gas and air fired heating system as claimed in claim 1 further comprising a main plant control system (115), the signal output and signal receiving ends of the PLC control system (114) being connected to the signal receiving end and signal output end of the main plant control system (115), respectively.
4. A natural gas and air mixed combustion heating system as in claim 1, wherein the gas mixing line (113) comprises a compressed air pipe (1), the compressed air pipe (1) is connected with the natural gas pipe (2) and the mixed gas pipe (3) through a tee joint (14), the compressed air pipe (1) is connected with a compressed air hose (4) through a hose inlet (15), and the mixed gas pipe (3) and the compressed air hose (4) are directly connected with the burner (110).
5. The combustion heating system for mixing natural gas and air according to claim 4, characterized in that a ball valve (5), a natural gas pressure regulating valve (6), a valve (8) with a pressure gauge and a button are connected to the compressed air pipeline (1) in sequence;
the natural gas pipeline (2) is sequentially connected with a ball valve (5), a pressure regulating valve (7), a natural gas pressure regulating valve (6), a valve (8) with a pressure gauge and a button, a gas electromagnetic valve (10) and a check valve (12).
6. A combustion heating system for mixing natural gas and air according to claim 5, characterized in that a pressure switch (13) and a trim valve (11) are also connected to the compressed air pipe (1).
7. A combustion heating system for mixing natural gas and air according to claim 5, characterized in that a gas pressure switch (9) and a micro-regulating valve (11) are further connected to the natural gas pipeline (2).
8. A mixed natural gas and air fired heating system according to claim 4 wherein the natural gas pipeline (2) is replaced with a liquefied petroleum gas pipeline.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021473149.9U CN213334372U (en) | 2020-07-23 | 2020-07-23 | Combustion heating system for mixing natural gas and air |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021473149.9U CN213334372U (en) | 2020-07-23 | 2020-07-23 | Combustion heating system for mixing natural gas and air |
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| CN213334372U true CN213334372U (en) | 2021-06-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115159816A (en) * | 2022-07-05 | 2022-10-11 | 佛山仙湖实验室 | Glass kiln oxy-fuel combustion control system and control method |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115159816A (en) * | 2022-07-05 | 2022-10-11 | 佛山仙湖实验室 | Glass kiln oxy-fuel combustion control system and control method |
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