CN214581055U - Gas supply gas circuit and gas output control system of natural gas burner - Google Patents
Gas supply gas circuit and gas output control system of natural gas burner Download PDFInfo
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- CN214581055U CN214581055U CN202120403112.7U CN202120403112U CN214581055U CN 214581055 U CN214581055 U CN 214581055U CN 202120403112 U CN202120403112 U CN 202120403112U CN 214581055 U CN214581055 U CN 214581055U
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Abstract
The utility model discloses a gas supply circuit and gas output control system of a natural gas burner, which comprises a gas inlet pipe, the surface of the gas inlet pipe facing the outlet is sequentially provided with a gas minimum pressure switch, an inlet pressure gauge, a main fire valve V1, a leak detection pressure gauge, a leak detection pressure switch, a main fire valve V2, a gas outlet servo valve and a gas maximum pressure switch, a leak detection valve V11 and a leak detection valve V22 are sequentially arranged between the gas minimum pressure switch and the inlet pressure gauge and the main fire valve V1 and the main fire valve V2 through branch pipes, the outlet of the gas inlet pipe of the gas supply gas path and the gas outlet flow control system is sleeved on a burner main body of a fan air door opening servo, the system is more economical and practical on the premise of ensuring the safety standard, the adjusting mode of the air outlet flow control system is designed to be electric proportional type adjusting, and the control precision of the scheme is superior to that of a general mechanical adjusting mode and is suitable for popularization and use.
Description
Technical Field
The utility model relates to a technical field is adjusted to the natural gas burner, specifically is a gas feed gas circuit and air output control system of natural gas burner.
Background
Natural gas refers to a mixture of hydrocarbon and non-hydrocarbon gases that are naturally trapped in subterranean formations, and in petroleum geology, oil field gas and gas field gas are commonly referred to. It is mainly found in oil fields and natural gas fields, and also in coal seams in small quantities. Natural gas is mainly used as fuel.
The gas circuit flow control valve group of the natural gas burner in the current market is mostly in a mechanical adjusting mode, is low in control precision and is not suitable for better popularization and use.
SUMMERY OF THE UTILITY MODEL
The utility model provides a natural gas burner's air feed gas circuit and air output control system can effectively solve and propose the gas circuit flow control valves of natural gas burner on the existing market among the above-mentioned background art and mostly be mechanical type mode of regulation, and control accuracy is low, the unsuitable better problem of using widely.
In order to achieve the above object, the utility model provides a following technical scheme: a gas supply gas circuit and gas output control system of a natural gas burner comprises a gas inlet pipe, wherein a gas minimum pressure switch, an inlet pressure gauge, a main fire valve V1, a leak detection pressure gauge, a leak detection pressure switch, a main fire valve V2, a gas output servo valve and a gas maximum pressure switch are sequentially arranged on the surface of a pipeline of the gas inlet pipe towards an outlet;
a leak detection valve V11 and a leak detection valve V22 are sequentially arranged between the gas minimum pressure switch and the inlet pressure gauge and between the main fire valve V1 and the main fire valve V2 through branch pipes;
the air supply gas path and the outlet of the gas inlet pipe of the air outlet flow control system are sleeved on a burner host provided with an air blower air door opening servo.
Preferably, the leak detection pressure gauge and the leak detection pressure switch are connected with a gas inlet pipe through a branch pipe.
Preferably, the signal terminals of the leak detection valve V11 and the leak detection valve V22 are connected to a signal terminal of a leak detection controller.
Preferably, the signal ends of the air blower air door opening servo device and the fuel gas outlet servo valve are connected with the signal output end of the PLC, and the output end of the PLC is connected with the input end of the touch screen.
Preferably, the gas inlet pressure of the gas inlet pipe is 30-40kpa, the minimum setting value of the gas minimum pressure switch is 25kpa, and the maximum setting value of the gas maximum pressure switch is 42 kpa.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model has the advantages of being scientific and reasonable in structure, convenience safe in utilization, this system is under the prerequisite of guaranteeing safety standard, and economical and practical, and the flow control system regulation mode design of just giving vent to anger adjusts for electronic proportion formula, and this scheme control accuracy is superior to general mechanical type regulation mode and is fit for pushing away the use.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
In the drawings:
fig. 1 is a schematic structural diagram of the present invention;
reference numbers in the figures: 1. a gas inlet pipe; 2. a gas minimum pressure switch; 3. an inlet pressure gauge; 4. a leak detection pressure gauge; 5. a main fire valve V1; 6. a main fire valve V2; 7. leak detection valve V11; 8. leak detection valve V22; 9. a leak detection pressure switch; 10. a gas outlet servo valve; 11. a gas maximum pressure switch; 12. a blower air door opening degree server; 13. a PLC programmable controller; 14. a touch screen; 15. and a leak detection controller.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Example (b): as shown in fig. 1, the utility model provides a technical scheme, a gas feed gas circuit and air output control system of natural gas burner, including gas inlet pipe 1, gas inlet pipe 1 pipeline surface installs gas minimum pressure switch 2 towards the exit in proper order, entry manometer 3, main fire valve V15, leak hunting manometer 4, leak hunting pressure switch 9, main fire valve V26, gas servo valve 10 and the biggest pressure switch 11 of gas of giving vent to anger, leak hunting manometer 4 and leak hunting pressure switch 9 are connected with gas inlet pipe 1 through the three-way pipe to be convenient for better installation;
a leak detection valve V117 and a leak detection valve V228 are sequentially arranged between the gas minimum pressure switch 2 and the inlet pressure gauge 3 and between the main fire valve V15 and the main fire valve V26 through branch pipes;
the outlet of the gas inlet pipe 1 of the gas supply gas path and the gas outlet flow control system is sleeved with a burner host machine provided with an air blower air door opening servo 12.
Wherein, the signal end of leak detection valve V117 and leak detection valve V228 links to each other with the signal end of leak detection controller 15, the signal end of air blower air door aperture servo 12 and gas servo 10 of giving vent to anger links to each other with PLC programmable controller 13 signal output part, PLC programmable controller 13's output links to each other with the input of touch-sensitive screen 14, thereby be convenient for signal transmission and control, and gas inlet pipe 1 pressure of admitting air is at 30-40kpa, the minimum of gas minimum pressure switch 2 sets up to 25kpa, the biggest of gas maximum pressure switch 11 sets up to 42kpa, thereby be convenient for measure and piping system safety.
The utility model discloses a theory of operation and use flow: the system is used as a part of a burner system, after receiving a starting signal of a main electric control system of the burner, the system firstly detects the gas pressure entering the system through a gas minimum pressure switch 2 and a gas maximum pressure switch 11, and the system working condition is met only when the pressure entering the pipeline system is larger than the setting of an inlet minimum pressure switch and smaller than the setting of an outlet maximum pressure switch;
the inlet pressure gauge 3 can visually reflect the air supply pressure, so that the state of the air supply source can be known conveniently, the pipeline leakage detection program is started when the air supply pressure is normal, and the leakage detection controller 15LDU controls the feedback signals of the two leakage detection valves V117 and V228 and the leakage detection pressure switch 9 to complete the safe leakage detection of the pipeline system.
And (3) leak detection working process:
the valve group and the pipeline leakage test are divided into two stages:
the first stage is as follows:
the leak detection controller 15 opens the leak detection control valve V228 for a while to release the pressure of the intermediate pipeline Pmid composed of the main fire valve V15, the main fire valve V16, the leak detection valve V117 and the leak detection valve V228, detects the signal feedback of the leak detection pressure switch connected with the intermediate pipeline Pmid after the pressure release, and can judge that the main fire valve V15, the leak detection valve V117 and the upstream air supply pipeline have no leakage if the pressure of the intermediate pipeline Pmid does not rise after 22.5 seconds, the first-stage detection is passed, and the first-stage detection is passed and enters the second-stage test.
If the pressure of the middle pipeline Pmid rises to trigger a leakage detection pressure switch within 22.5 seconds, indicating that the main fire valve V15 and the leakage detection valve V117 or an upstream pipeline leaks, and when the leakage occurs, the leakage detection controller 15 sends a leakage detection failure signal to lock the PLC 13, so that the combustor stops working;
and a second stage:
the leak detection controller 15 opens the leak detection valve V117 for a short time to inflate the intermediate pipeline Pmid by the air pressure of the upstream air supply pipeline, the leak detection switch outputs a signal feedback after the inflation, and after 27.5 seconds, if the pressure of the intermediate pipeline Pmid is not reduced, it can be judged that the main fire valve V26, the leak detection valve V228 and the downstream pipeline are not leaked, and the second stage is completed.
If the pressure of the middle pipeline Pmid drops to trigger a leakage detection pressure switch within 27.5 seconds, the leakage detection pressure switch indicates that the downstream pipelines of the main fire valve V26 and the leakage detection valve V228 are leaked, and when the leakage occurs, the leakage detection controller 15 sends a leakage detection failure signal to lock the PLC 13, so that the combustor stops working.
When the two stages are completed, the leak detection is successful, the leak detection controller 15 sends a leak detection success signal to the main electric control system of the combustor, and the main electric control system finishes other steps of the ignition work of the combustor.
Leak hunting manometer 9, be used for monitoring the pressure state of middle pipeline in the leak hunting process:
after the main electric control system of the burner completes ignition work, the main fire valve V15 and the main fire valve V26 are opened simultaneously, the opening of the gas flow regulating valve 10 is adjusted, gas is supplied to the gas nozzle, the burner enters a normal working state, and the main fire valve V15 and the main fire valve V26 play a role in opening and closing a main gas pipeline;
the main fire valve V15 and the main fire valve V26 are opened, and after the burner is ignited to normally work, the gas output is controlled by adjusting the opening degree of the gas outlet servo valve 10, so that the fire power of the burner is controlled;
the gas outlet servo valve 10, the programmable controller 13 and the touch screen 14 form a gas outlet control system, and the working principle of the system is described as follows:
the opening size parameter of an air door opening servo 12 of the air blower and the preset parameter of the touch screen 14 during the operation of equipment are read through a PLC (programmable logic controller) 13, the PLC 13 calls the preset parameter in the touch screen after program operation processing, the opening of a gas outlet servo valve 10 is controlled through the preset parameter, the gas outlet flow of natural gas is controlled, and the purpose of controlling the firepower is achieved by matching with the amount of combustion-supporting air.
Because this gas servo valve of giving vent to anger adopts the automatically controlled scheme to design, so it is more convenient than other mechanical type tolerance adjusting valve adjustment, and control accuracy is higher, is more convenient for adjust gas combustion efficiency, only needs 14 fine setting aperture parameters of touch-sensitive screen can reach good result of use.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a natural gas burner's air feed gas circuit and air output control system, includes gas inlet pipe (1), its characterized in that: a gas minimum pressure switch (2), an inlet pressure gauge (3), a main fire valve V1(5), a leakage detection pressure gauge (4), a leakage detection pressure switch (9), a main fire valve V2(6), a gas outlet servo valve (10) and a gas maximum pressure switch (11) are sequentially arranged on the surface of the gas inlet pipe (1) facing the outlet;
a leak detection valve V11(7) and a leak detection valve V22(8) are sequentially arranged between the gas minimum pressure switch (2) and the inlet pressure gauge (3) and between the main fire valve V1(5) and the main fire valve V2(6) through branch pipes;
the outlet of the gas inlet pipe (1) of the gas supply gas circuit and the gas outlet flow control system is sleeved and installed on a burner main body provided with an air blower air door opening servo (12).
2. The gas supply path and gas output control system of the natural gas burner as claimed in claim 1, wherein the leak detection pressure gauge (4) and the leak detection pressure switch (9) are connected with the gas inlet pipe (1) through a branch pipe.
3. The gas supply circuit and gas output control system of the natural gas burner as claimed in claim 1, wherein the electrical signal terminals of the leak detection valve V11(7) and the leak detection valve V22(8) are connected to the signal terminal of a leak detection controller (15).
4. The gas supply path and gas output control system of the natural gas burner as claimed in claim 1, wherein the signal ends of the blower air door opening servo (12) and the gas outlet servo valve (10) are connected with the signal output end of a PLC (13), and the output end of the PLC (13) is connected with the input end of a touch screen (14).
5. The gas supply path and gas output control system of the natural gas burner as claimed in claim 1, wherein the gas inlet pressure of the gas inlet pipe (1) is 30-40kpa, the minimum setting value of the gas minimum pressure switch (2) is 25kpa, and the maximum setting value of the gas maximum pressure switch (11) is 42 kpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120403112.7U CN214581055U (en) | 2021-02-23 | 2021-02-23 | Gas supply gas circuit and gas output control system of natural gas burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120403112.7U CN214581055U (en) | 2021-02-23 | 2021-02-23 | Gas supply gas circuit and gas output control system of natural gas burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214581055U true CN214581055U (en) | 2021-11-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120403112.7U Active CN214581055U (en) | 2021-02-23 | 2021-02-23 | Gas supply gas circuit and gas output control system of natural gas burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214581055U (en) |
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2021
- 2021-02-23 CN CN202120403112.7U patent/CN214581055U/en active Active
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