CN219494094U - Environment self-adaptive combustion control system for oil field - Google Patents
Environment self-adaptive combustion control system for oil field Download PDFInfo
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- CN219494094U CN219494094U CN202320826560.7U CN202320826560U CN219494094U CN 219494094 U CN219494094 U CN 219494094U CN 202320826560 U CN202320826560 U CN 202320826560U CN 219494094 U CN219494094 U CN 219494094U
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Abstract
The utility model relates to the technical field of combustors, and discloses an environment self-adaptive combustion control system for an oil field, which is applied to the combustors and comprises a controller: the combustion control system comprises a plurality of fan pressure detection sensors, a gas flowmeter, a gas valve and a throttle valve; the fan pressure detection sensor is used for detecting the wind pressure at the air inlet of the fan in the combustor; the gas flowmeter is used for detecting the flow of the gas in the main gas inlet pipeline of the burner; the gas valve is used for adjusting the opening and closing degree of the gas valve according to the control of the controller so as to control the gas inflow of the gas; the air door valve is used for adjusting the opening and closing degree of the air door valve according to the control of the controller so as to control the air inflow of air. The system can adjust the air inflow of the fuel gas and the air according to the detected gas flow and the detected air pressure, thereby realizing self-adaptive control, ensuring the combustion efficiency of the burner to be always in an optimal state and reducing energy waste and environmental pollution.
Description
Technical Field
The utility model belongs to the technical field of the combustor, concretely relates to environment self-adaptation combustion control system for oil field.
Background
With the development of society, environmental problems are increasingly prominent, and the international society is increasingly concerned about the influence and the consequences of environmental pollution. In China, along with the development of economic construction, environmental problems caused by the large-scale use of fossil energy are particularly prominent, acid rain, haze and the like of air pollution and bleed air continuously cause serious harm to social development and human health, and the national requirements on energy conservation and environmental protection are increasingly strict, so that the large-scale use of fuel gas causes environmental protection requirements on energy conservation and emission, and the high-efficiency combustor becomes a key factor for solving the contradictions. Therefore, a design for precisely controlling the combustion ratio is particularly important for organizing combustion and reducing pollutant emission.
The air quantity control of the burner is a key of the whole combustion, and too high or too low air quantity can lead to incomplete combustion of fuel gas, so that great energy waste and environmental pollution are caused.
The existing control modes of the burner are divided into mechanical control and electronic ratio control, and most of the current markets adopt electronic ratio control combustion. To ensure adequate combustion, the burner needs to be measured by an on-site technician through instrumentation, manually to tune the burner's ratio curve. The control mode ensures accurate combustion in a short time, but the oxygen content in the air is changed in volume along with the change of time and air pressure, so that the deviation of the combustion air-fuel ratio is easy to cause, and the energy waste is caused. Therefore, how to design a control for reducing the oxygen concentration of tail flue gas and ensuring stable and full combustion is an urgent problem to be solved by the current research and development technicians.
Disclosure of Invention
The purpose of the utility model is that: the environment self-adaptive combustion control system for the oil field aims to realize accurate adjustment of fuel gas and air in a combustor through the synergistic effect of a plurality of sensors and an executing mechanism, so that the combustion process is more stable and efficient.
In order to achieve the technical purpose, the technical scheme adopted by the novel device is as follows:
an environment self-adaptive combustion control system for an oil field is applied to a combustor and comprises a controller:
the combustion control system comprises a plurality of fan pressure detection sensors, a gas flowmeter, a gas valve and a throttle valve;
the fan pressure detection sensor is arranged at the air inlet of the fan in the combustor and is used for detecting the wind pressure at the air inlet of the fan in the combustor and transmitting a detected wind pressure signal to the controller;
the gas flowmeter is arranged in a gas inlet pipe of the burner and is used for detecting the flow of gas in a main gas inlet pipeline of the burner and transmitting detected flow signals to the controller;
the gas valve is arranged in the gas inlet pipe of the burner and is used for adjusting the opening and closing degree of the gas valve according to the control of the controller so as to control the gas inflow of the gas;
the air door valve is arranged at the air inlet of the fan in the combustor and is used for adjusting the opening and closing degree of the air door valve according to the control of the controller so as to control the air inflow of air;
the fan pressure detection sensor, the gas flowmeter, the gas valve and the air door valve are all connected with the controller.
Further, the combustion control system comprises a plurality of burner nozzle pressure monitoring sensors, wherein the burner nozzle pressure monitoring sensors are arranged at the burner nozzle and are used for detecting the position pressure of the burner nozzle and transmitting detected nozzle pressure signals to the controller, and the burner nozzle pressure monitoring sensors are connected with the controller.
Further, the combustion control system includes a plurality of ambient pressure detection sensors for detecting ambient atmospheric pressure and delivering an ambient atmospheric pressure signal to the controller; the ambient temperature detection sensor is used for detecting ambient temperature and transmitting an ambient temperature signal to the controller.
Further, the combustion control system comprises a controller control cabinet, wherein the controller control cabinet is arranged in the middle of the combustor, and the controller is arranged in the controller control cabinet.
Further, the number of the fan pressure detection sensors is 4.
Further, the number of the ambient pressure detection sensors is 4, and the number of the ambient temperature detection sensors is 1.
Further, the gas valve is a gas butterfly valve; the throttle valve is a throttle butterfly valve.
The utility model adopting the technical scheme has the following advantages:
1. the method is suitable for the operation of the low-nitrogen burner at different altitudes;
2. the ratio of air to fuel gas is enhanced, the combustion efficiency is improved, and the thermal efficiency of the boiler is increased.
3. The time of field technology and after-sales personnel is greatly reduced, and the stability of the whole operation period of the burner is improved, so that the waste of energy sources and the pollution to the environment are greatly reduced.
Drawings
The utility model can be further illustrated by means of non-limiting examples given in the accompanying drawings;
FIG. 1 is a schematic diagram of an environmental adaptive combustion control system for an oilfield.
The main reference numerals are as follows:
1-ambient pressure detection sensor, 2-ambient temperature detection sensor, 3-fan pressure detection sensor, 4-combustor shower nozzle pressure monitoring sensor, 5-gas flowmeter, 6-controller, 7-controller switch board, 8-air door butterfly valve, 9-gas butterfly valve, 10-combustor.
Detailed Description
The present utility model will be described in detail below with reference to the drawings and the specific embodiments, wherein like or similar parts are designated by the same reference numerals throughout the drawings or the description, and implementations not shown or described in the drawings are in a form well known to those of ordinary skill in the art. In addition, directional terms such as "upper", "lower", "top", "bottom", "left", "right", "front", "rear", etc. in the embodiments are merely directions with reference to the drawings, and are not intended to limit the scope of the present utility model.
As shown in fig. 1, an environment adaptive combustion control system for oil field is applied to a combustor 10 and comprises a controller 6;
the combustion control system comprises a plurality of fan pressure detection sensors 3, a gas flowmeter 5, a gas valve and a throttle valve; the fan pressure detection sensor 3 is arranged at the air inlet of the fan in the combustor 10 and is used for detecting the air pressure at the air inlet of the fan in the combustor 10 and transmitting a detected air pressure signal to the controller 6; in this embodiment, the fan pressure detecting sensor 3 is preferably installed on the side plate cover of the air inlet of the air door of the burner 10, fixed by using internal screw threads, and connected with the controller 6 by adopting a double-core 1 flat shielding cable.
The gas flowmeter 5 is arranged in a gas inlet pipe of the combustor 10 and is used for detecting the flow of gas in a main gas inlet pipeline of the combustor 10 and transmitting detected flow signals to the controller 6; in this embodiment, the gas flowmeter 5 is preferably mounted on the main gas inlet pipe of the burner 10, and is connected to the controller 6 using a 4-core shielded cable by using flange connection.
The gas valve is arranged in a gas inlet pipe of the combustor 10 and is used for adjusting the opening and closing degree of the gas valve according to the control of the controller 6 so as to control the gas inflow; the air door valve is arranged at an air inlet of the air blower in the combustor 10 and is used for adjusting the opening and closing degree of the air door valve according to the control of the controller 6 so as to control the air inflow of air; the fan pressure detection sensor 3, the gas flowmeter 5, the gas valve and the air door valve are all connected with the controller 6.
The controller 6, the fan pressure detecting sensor 3, the gas flowmeter 5, the gas valve and the air door valve related to the combustion control system are all in the prior art, a wind pressure flow database with a fan before leaving the factory is built in the controller 6, and the wind quantity and wind pressure point matched after the deviation coefficient is calculated according to the flow meter of the load power section and the proportion is calculated according to the power of the field boiler.
When the burner 10 equipment is installed on site, the controller 6 firstly calculates the maximum load to minimum load power section according to the set boiler power, and calculates the wind volume and wind pressure point position according to the flowmeter of the load power section. After the calculation of the air quantity and the air pressure is finished, the controller 6 firstly starts the fan to control the air door valve to be opened slowly, the air pressure signal detected by the fan pressure detection sensor 3 is received simultaneously in the purging stage before operation, after the purging stage before operation is finished, the controller 6 controls the gas valve and the air door valve to perform ignition operation according to the set ignition parameters, after the ignition is normally and stably operated for one minute, the controller 6 reads the flow signal detected by the gas flowmeter 5 and corrects the power, and if the flow signal value in the actual operation is lower than the calculated power load, the controller 6 controls the gas valve to be opened slowly. If the flow signal value is higher than the calculated power load during actual operation, the controller 6 controls the gas valve to be slowly closed. Meanwhile, the controller 6 controls the air door valve to reach the corresponding air quantity and air pressure curve point according to the air pressure signal detected by the fan pressure detection sensor 3 and the flow signal detected by the gas flowmeter 5, so that the effect of accurately controlling the air-fuel ratio is achieved.
Compared with the prior art, the utility model has the following advantages:
and (3) self-adaptive control: the system can adjust the air inflow of the fuel gas and the air according to the detected fuel gas flow and the detected air pressure, thereby realizing self-adaptive control. This ensures that the combustion efficiency and the thermal efficiency of the burner 10 are always in the optimum state.
The combustion efficiency is high: by monitoring and adjusting the amounts of gas and air in real time, the system can ensure that the combustion efficiency of the burner 10 is always in an optimal state, thereby maximizing the combustion efficiency of the burner 10.
Energy saving and environmental protection: because the system can realize self-adaptive control, unnecessary energy waste can be reduced, and energy sources can be saved. In addition, the system can ensure that the gas emission in the combustion process is always at the minimum level, so that the pollution to the environment can be reduced.
The reliability is high: the system adopts a plurality of sensors and valves, so that the air inflow of the fuel gas and the air can be ensured to be always in the optimal state. In addition, the controller 6 of the system can comprehensively monitor and control the whole system, so that the reliability and stability of the whole system can be ensured.
In some embodiments, the combustion control system includes a plurality of burner nozzle pressure monitoring sensors 4, where the burner nozzle pressure monitoring sensors 4 are disposed at the burner 10 nozzle, and are used for detecting the nozzle position pressure of the burner 10 and transmitting the detected nozzle pressure signal to the controller 6, where the burner nozzle pressure monitoring sensors 4 are connected to the controller 6, and in this embodiment, the burner nozzle pressure monitoring sensors 4 are preferably installed at the position of the gas nozzle inside the burner 10, and are fixed by using a clamp, and are connected to the controller 6 by adopting a flat shielded cable with a dual core 1.
The controller 6 detects the numerical value of the nozzle pressure signal detected by the burner nozzle pressure monitoring sensor 4 in real time, and when the pressure rises due to severe changes of the on-site altitude environment and the hearth environment, the controller 6 can give an early warning or flameout and furnace shutdown protection. In addition, the addition of the burner nozzle pressure monitoring sensor 4 to the burner 10 can achieve finer control, further improving combustion efficiency and stability. By detecting the pressure at the burner 10 tip, the rate and amount of fuel injection can be more accurately determined, thereby better controlling the mixing ratio of fuel and air, making the burner 10 more efficient and stable in combustion, and reducing pollutant emissions. In addition, the burner nozzle pressure monitoring sensor 4 can also help to detect and eliminate faults such as nozzle blockage, thereby ensuring the normal operation and safety of the burner 10. Therefore, the burner tip pressure monitoring sensor 4 plays an important role in improving the control accuracy and stability of the burner 10.
In some embodiments, the combustion control system comprises a plurality of ambient pressure detection sensors 1 and an ambient temperature detection sensor 2, the ambient pressure detection sensors 1 for detecting ambient atmospheric pressure and delivering an ambient atmospheric pressure signal to a controller 6; the ambient temperature detection sensor 2 is configured to detect an ambient temperature and to transmit an ambient temperature signal to the controller 6. In this embodiment, the ambient pressure detecting sensor 1 is preferably mounted at the left side plate of the air inlet of the fan of the burner 10, and is fixed by using a clamp, and is connected with the controller 6 by adopting a flat shielded cable with a double core 1. The ambient temperature detection sensor 2 is arranged at the right side plate of the fan air inlet of the burner 10, is fixed by using a clamp, and is connected with the controller 6 by adopting a double-core 1 flat shielding cable.
Because the field environments of different use scenes are different, the wind pressure and wind volume data can deviate under the influence of the factors such as the ambient temperature, the ambient atmospheric pressure and the like. Therefore, after the burner 10 equipment is installed on site, the controller 6 firstly calculates the maximum load to minimum load power section according to the set boiler power, then reads the actual measurement data of the site environment pressure sensor and the temperature detection sensor, calculates the offset coefficient of the wind pressure and wind volume database before the fan leaves the factory according to the atmospheric pressure temperature actual measurement data under the site elevation, and finally controls the air door valve and the gas valve to reach the wind volume and wind pressure curve point which corresponds to the wind pressure and wind volume after the offset coefficient is multiplied, thereby achieving the effect of accurately controlling the air-fuel ratio. This allows for more intelligent and automated combustion control systems and enables more accurate combustion control. In different usage scenarios, since changes in ambient atmospheric pressure and ambient temperature can affect the combustion process, timely and accurate detection and monitoring of ambient atmospheric pressure and ambient temperature is important to maintain the stability and efficiency of the combustion process. Meanwhile, the combustion control system is also suitable for more different working environments, so that the time of field technology and after-sales personnel is greatly reduced, the stability of the operation period of the whole combustor 10 is improved, and the waste of energy sources and the pollution to the environment are greatly reduced.
In some embodiments, the combustion control system comprises a controller control cabinet 7, the controller control cabinet 7 being arranged in the middle of the burner 10, the controller 6 being mounted in the controller control cabinet 7. The controller 6 is installed in the controller control cabinet 7, so that the length of the control signal line can be shortened, which helps to reduce interference and signal loss during signal transmission, thereby improving the control accuracy and stability of the system. While allowing for greater integration and compactness of the overall combustor 10 system for ease of maintenance and service. If the controller 6 is separately provided at a position remote from the burner 10, additional labor and time costs are required for maintenance and repair, and the maintenance and repair can be more conveniently performed by installing the controller 6 in the controller cabinet 7.
In some embodiments, the number of fan pressure detection sensors 3 is 4. The 4 sensors may provide multiple data points to more accurately monitor the pressure change of the fan. This helps to ensure that the fan does not experience too high or too low a pressure during operation. In addition, using multiple sensors to monitor the pressure of the fan may improve the reliability of the system. If one of the sensors fails, the other sensor may continue to monitor the pressure of the blower, thereby preventing system failure. It should be noted that the use of 4 sensors is not necessary, and the number and positions of the sensors need to be determined according to specific requirements and situations in practical applications.
In some embodiments, the number of the ambient pressure detection sensors 1 is 4, and the number of the ambient temperature detection sensors 2 is 1. The use of 4 ambient pressure sensors allows the pressure at different locations to be monitored, thereby providing a better understanding of the ambient pressure changes. This helps to ensure the accuracy of the environmental conditions and provides reliable data support for subsequent decisions.
In some embodiments, the gas valve is a gas butterfly valve 9; the throttle valve is a throttle butterfly valve 8. Using the gas butterfly valve 9 as the gas valve and the damper butterfly valve 8 as the damper valve, this arrangement saves space: butterfly valves have a relatively small volume and weight compared to conventional valves and thus can be used in situations where space is limited. The butterfly valve can save the occupied area of equipment, thereby improving the field utilization rate. It should be noted that butterfly valves are not a universal solution for all situations. When the valve type is selected, factors such as control precision, pressure loss, maintenance cost and safety of the valve are comprehensively considered according to specific application requirements and scene characteristics.
The environment self-adaptive combustion control system for the oil field provided by the utility model is described in detail. The description of the specific embodiments is only intended to aid in understanding the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.
Claims (7)
1. An environment self-adaptive combustion control system for an oil field is applied to a combustor (10) and comprises a controller (6), and is characterized in that:
the combustion control system comprises a plurality of fan pressure detection sensors (3), a gas flowmeter (5), a gas valve and a throttle valve;
the fan pressure detection sensor (3) is arranged at the air inlet of the fan in the combustor (10) and is used for detecting the air pressure at the air inlet of the fan in the combustor (10) and transmitting a detected air pressure signal to the controller (6);
the gas flowmeter (5) is arranged in a gas inlet pipe of the burner (10) and is used for detecting the flow of gas in a gas inlet pipeline of the burner (10) and transmitting a detected flow signal to the controller (6);
the gas valve is arranged in a gas inlet pipe of the burner (10) and is used for adjusting the opening and closing degree of the gas valve according to the control of the controller (6) so as to control the gas inflow of the gas;
the air door valve is arranged at an air inlet of the fan in the combustor (10) and is used for adjusting the opening and closing degree of the air door valve according to the control of the controller (6) so as to control the air inflow of air;
the fan pressure detection sensor (3), the gas flowmeter (5), the gas valve and the air door valve are all connected with the controller (6).
2. An oilfield environment adaptive combustion control system according to claim 1, wherein:
the combustion control system comprises a plurality of burner nozzle pressure monitoring sensors (4), wherein the burner nozzle pressure monitoring sensors (4) are arranged at the burner (10) nozzle and are used for detecting the position pressure of the burner (10) nozzle and transmitting detected nozzle pressure signals to the controller (6), and the burner nozzle pressure monitoring sensors (4) are connected with the controller (6).
3. An oilfield environment adaptive combustion control system according to claim 2, wherein:
the combustion control system comprises a plurality of ambient pressure detection sensors (1) and an ambient temperature detection sensor (2), wherein the ambient pressure detection sensors (1) are used for detecting ambient atmospheric pressure and transmitting ambient atmospheric pressure signals to a controller (6); the ambient temperature detection sensor (2) is used for detecting the ambient temperature and transmitting an ambient temperature signal to the controller (6).
4. An oilfield environmental adaptive combustion control system according to claim 3, wherein:
the combustion control system comprises a controller control cabinet (7), wherein the controller control cabinet (7) is arranged in the middle of the combustor (10), and the controller (6) is arranged in the controller control cabinet (7).
5. An oilfield environment adaptive combustion control system according to claim 4, wherein:
the number of the fan pressure detection sensors (3) is 4.
6. An oilfield environment adaptive combustion control system according to claim 5, wherein:
the number of the ambient pressure detection sensors (1) is 4, and the number of the ambient temperature detection sensors (2) is 1.
7. An oilfield environment adaptive combustion control system according to claim 6, wherein:
the gas valve is a gas butterfly valve (9); the throttle valve is a throttle butterfly valve (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320826560.7U CN219494094U (en) | 2023-04-14 | 2023-04-14 | Environment self-adaptive combustion control system for oil field |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320826560.7U CN219494094U (en) | 2023-04-14 | 2023-04-14 | Environment self-adaptive combustion control system for oil field |
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| CN219494094U true CN219494094U (en) | 2023-08-08 |
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| CN202320826560.7U Active CN219494094U (en) | 2023-04-14 | 2023-04-14 | Environment self-adaptive combustion control system for oil field |
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