CN112228227A - Control system and control method for electric control regulating valve - Google Patents
Control system and control method for electric control regulating valve Download PDFInfo
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- CN112228227A CN112228227A CN202011191699.6A CN202011191699A CN112228227A CN 112228227 A CN112228227 A CN 112228227A CN 202011191699 A CN202011191699 A CN 202011191699A CN 112228227 A CN112228227 A CN 112228227A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
- F02C9/26—Control of fuel supply
- F02C9/263—Control of fuel supply by means of fuel metering valves
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/02—Form or structure of the vessel
- C12M23/06—Tubular
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/12—Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
- C12M41/18—Heat exchange systems, e.g. heat jackets or outer envelopes
- C12M41/24—Heat exchange systems, e.g. heat jackets or outer envelopes inside the vessel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/22—Fuel supply systems
- F02C7/222—Fuel flow conduits, e.g. manifolds
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
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- Combustion & Propulsion (AREA)
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Abstract
The invention relates to the field of aircraft engine control systems, and discloses an electric control regulating valve control system and a control method thereof, wherein the electric control regulating valve control system comprises a central processing unit, and an analog quantity module, a small relay, a pressure sensor, a flow meter and an electric control valve which are respectively connected with the central processing unit; the electric control valve, the pressure sensor and the flow meter are all arranged in the fuel oil pipeline, and the flow meter and the pressure sensor are electrically connected with the central processing unit through the analog quantity module; the electric control valve comprises a PS intelligent actuator, and the PS intelligent actuator comprises a microprocessor and a valve position resistor connected with the microprocessor; the valve position resistor is arranged on the valve; the microprocessor is electrically connected with the miniature relay. The invention effectively improves the control precision.
Description
Technical Field
The invention relates to the field of aircraft engine control systems, in particular to an electric control regulating valve control system and a control method thereof.
Background
Along with the continuous development of aerospace in China, the growth of airplane fleets and the continuous increase of flying hours, the problems and faults exposed by a fuel oil system are older and more in the field operation process.
The existing engine fuel simulation control system has a plurality of defects. In the engine fuel oil analog control system, an electric control regulating valve is the key of accurate control. However, the control precision of the electrically controlled regulating valve in the existing engine fuel simulation control system is low, and the requirements of an aircraft engine cannot be met.
The existing electric control regulating valve is provided with an industrial electric regulating valve and a Programmable Logic Controller (PLC), so that the opening and closing of the industrial electric regulating valve are controlled, and the PID control of the flow and the pressure of a fuel oil way is realized. The PS intelligent controller inside the existing electric control valve is a PSL (performance Specification Language, Language dedicated to hardware feature description) straight stroke controller or a PSQ angular stroke controller, and the controller is composed of a main control circuit board, a power supply unit, a sensor, an operation key with an LED, a subentry capacitor, a connection terminal, and the like. The PS intelligent controller is based on special single-chip microprocessor, converts analog signals and valve position resistance signals of an input loop into digital signals, and displays results or outputs control signals after the microprocessor passes through intelligent control software according to sampling results.
The precision of the sensor in the PS intelligent controller is +/-0.5-1%, and the regulation precision of the flow and the pressure of the fuel oil line is +/-1%, so the control precision of the analog quantity of the PS intelligent controller cannot meet the use requirement of regulating the flow and the pressure of the fuel oil line.
In addition, because the fuel oil is a mixed liquid and is not a single pure liquid, after the fuel oil is heated at high temperature in operation, the high-temperature fuel oil is gasified, part of the fuel oil is gasified into small molecular gas, and the small molecular gas can not be controlled by a valve, so that errors are brought to the control and adjustment of the whole fuel oil.
Disclosure of Invention
The invention provides an electronic control regulating valve control system which is used for solving the problem of low accuracy of the existing electronic control regulating valve control system.
The technical scheme adopted by the invention for solving the technical problems is as follows: an electric control regulating valve control system comprises a central processing unit, and an analog quantity module, a small relay, a pressure sensor, a flow meter and an electric control valve which are respectively connected with the central processing unit; the electric control valve, the pressure sensor and the flow meter are all arranged in the fuel oil pipeline, and the flow meter and the pressure sensor are electrically connected with the central processing unit through the analog quantity module; the electric control valve comprises a PS intelligent actuator, and the PS intelligent actuator comprises a microprocessor and a valve position resistor connected with the microprocessor; the valve position resistor is arranged on the valve; the microprocessor is electrically connected with the miniature relay.
The invention has the advantages that:
through PS intelligent actuator, be different from current automatically controlled valve control structure, can carry out automatically controlled valve regulation and control more accurately. When each device is installed in the pipeline, the flow is intercepted through the small hole, so that each detection device including the pressure sensor and the flowmeter can accurately detect the condition of the fuel in the pipeline. The invention can effectively improve the precision of fuel regulation control.
Furthermore, the microprocessor is also connected with a temperature sensor, the temperature sensor is arranged in the fuel oil pipeline, and the temperature sensor is connected with the analog quantity module.
The temperature change condition in the fuel pipeline can be detected conveniently and timely.
Furthermore, an automatic regulation strategy and an emergency treatment strategy are arranged in the central processing unit; the central processing unit controls the small relay and the electric control valve to work by receiving signals transmitted by the analog quantity module from the pressure sensor and the flowmeter.
Through a preset automatic regulation strategy, the work of the electric control valve and the small relay is automatically controlled through a central processing unit directly through signals detected by electronic devices arranged on a fuel oil pipeline.
Further, the central processing unit controls the small relay and the electric control valve to work according to an emergency treatment strategy by receiving signals transmitted by the analog quantity module from the pressure sensor, the flow meter and the temperature sensor.
When an emergency occurs, the internal of the fuel pipeline shows the changes of physical quantities such as temperature, pressure and the like, and when the signals are detected to be abnormal, the small relay and the electric control valve are directly controlled to work through a preset emergency strategy, so that the generation and expansion of danger are avoided as much as possible.
Further, a protective layer used for oil-gas separation is arranged in the fuel oil pipeline, and a temperature control circuit connected with the central processing unit is arranged in the protective layer.
The protective layer can be ensured to be basically in a certain temperature range through the temperature control circuit, and the formation of the biological membrane on the protective layer is facilitated.
Further, the protective layer comprises a protective net for covering the fuel pipeline, and the temperature control circuit is arranged on the protective net.
The protection net is a framework of the protection layer and is arranged along the inner wall of the fuel pipeline, so that the formed protection net is also arranged along the inner wall of the fuel pipeline, and a biological membrane is conveniently formed to separate oil from gas.
Furthermore, each grid of the protection net is connected with a culture tube filled with a biological sample, and two ends of the culture tube are provided with culture ports for the biological sample to grow outwards and extend out.
Through the biological sample, on the basis of the protective net, protective layers which are mutually interwoven and stacked can be formed by the growth of the biological sample extending out of the culture opening. Compared with the protective layers of other fixed structures, the protective layer has automatic repairability, and can resist the adverse effects caused by external impact pressure, extreme weather and the like.
Further, the temperature control circuit comprises a thermistor and a refrigerating sheet which extend into each culture tube.
The external environment is dealt with by the thermistor heating or the refrigeration of the refrigeration piece, so that the local environment temperature suitable for the growth and maintenance of the biological sample is always kept in the culture tube.
The invention also provides a control method of the electric control regulating valve, which comprises the following steps:
the method comprises the following steps that firstly, a pressure sensor and a flowmeter which are arranged in a fuel pipeline transmit pressure signals and flow signals in the fuel pipeline of the area to a central processing unit;
step two, the central processing unit controls the electric control valve to work according to a preset automatic regulation strategy;
and step three, the electric control valve controls the opening and closing state of the valve through a PS intelligent actuator.
The method has the advantages that:
the condition in the fuel pipeline is directly detected through the pressure sensor and the flowmeter, the central processing unit controls the opening and closing state of a valve in the electric control valve through a preset automatic adjustment strategy, and the overall precision of electric control dispensing control is improved through the precision of the central processing unit and each detection terminal.
Further, the central processing unit starts a temperature control circuit connected with the central processing unit according to a preset emergency strategy, and the production of the biological sample in the culture tube is promoted through the thermistor or the refrigerating sheet and extends out of the culture port, so that the protection net is covered by the biological sample to form a protection layer.
When the fuel pipeline is impacted by external force or encounters an extreme temperature environment, the temperature control circuit is started through an emergency strategy to enable the biological sample in the culture tube on the protection net to grow and extend out of the culture tube, and a protection layer is formed to protect and repair the biological sample.
Drawings
Fig. 1 is a control flow chart according to a first embodiment of the present invention.
Fig. 2 is a schematic diagram of a connection circuit of a cpu according to a first embodiment of the present invention.
Fig. 3 is a schematic circuit diagram of an analog module according to a first embodiment of the invention.
Detailed Description
The following is further detailed by way of specific embodiments:
example one
The embodiment is substantially as shown in figures 1, 2 and 3 of the accompanying drawings: the electric control regulating valve control system comprises a central processing unit, and an analog quantity module, a small relay, a pressure sensor, a flow meter and an electric control valve which are respectively and electrically connected with the central processing unit. The electronic control valve is internally provided with a PS intelligent actuator, and the PS intelligent actuator comprises a microprocessor and a valve position resistor connected with the microprocessor.
The PS intelligent actuator is connected with the central processing unit through a miniature relay, and sensing detection elements such as a flowmeter, a pressure sensor and the like are connected with the central processing unit through an analog quantity module.
In this embodiment, the central processing unit may be a general CPU programmable controller, and in this embodiment, ST20 is used.
The central processing unit controls the opening of the electric control valve through the analog quantity module, the small relay, the pressure sensor and the flowmeter. The PS intelligence of the electric control valve is based on special single-chip microprocessing, analog signals of an input loop and valve position resistance signals are converted into digital signals, and a microprocessor displays results or outputs control signals after passing through intelligent control software according to sampling results.
The signal input and output on the main circuit board of the PS intelligent actuator are analog quantity control terminals, the PS intelligent actuator is not used, a manual control button is pressed to enable an electric control valve to be in a manual control state, and remote uplink and remote downlink terminals on the main circuit board of the PS intelligent actuator are connected with a miniature relay. And a pressure sensor and a flowmeter are arranged on the fuel oil circuit and are connected with an expansion module.
Because the small relay is controlled by the CPU, the pull-in time of the small relay can be controlled by programming the CPU. The shorter the actuation time of the miniature relay is, the shorter the action time of the electric control valve is, so the opening change of the electric control valve is smaller. Finally, the flow and pressure regulation precision of the fuel oil circuit can be controlled within +/-1 per thousand.
Example two
In this embodiment, a protection layer for oil-gas separation is arranged in the fuel oil pipeline, the protection layer includes a protection net for covering the fuel oil pipeline, and the temperature control circuit is arranged on the protection net. The protective layer is arranged behind the existing protective net, and the protective net is a framework of the protective layer. Each grid of the protection net is connected with a culture tube filled with a biological sample, and two ends of the culture tube are provided with culture ports for the biological sample to grow outwards and extend out. Through the biological sample, on the basis of the protective net, protective layers which are mutually interwoven and stacked can be formed by the growth of the biological sample extending out of the culture opening. Compared with protective layers of other fixed structures, the protective layer has automatic repairability, can resist external impact pressure, more importantly, the protective layer is formed by biological sample growth on a protective net, the biological film can separate oil and gas of high-temperature gasified fuel oil in the formation process, the gasified gas is absorbed as nutrient for biological sample growth, and the rest of all liquefied fuel oil can be accurately controlled by the electric control valve.
And a temperature control circuit connected with the central processing unit is arranged in the protective layer. The temperature control circuit comprises a thermistor and a refrigerating piece which extend into each culture tube. The thermistor and the refrigerating piece are arranged in different circuit loops, and the external environment is dealt with by heating the thermistor or refrigerating the piece by the thermistor respectively, so that the local environment temperature suitable for the growth and maintenance of the biological sample is kept in the culture tube all the time. The protective layer can be ensured to be basically in a certain temperature range through the temperature control circuit, and the formation of the biological membrane on the protective layer is facilitated.
In order to accelerate the formation and repair of the protective layer, the biological sample can be a fungus sample with crazy reproductive performance, or other biological samples capable of forming a biological membrane material.
EXAMPLE III
In this embodiment, the protective layer only sets up on the top surface of burning oil pipe inner wall, and need not cover the burning oil pipe inner wall comprehensively, can effectively save the cost and reduce the installation degree of difficulty, does not influence oil-gas separation simultaneously again. Since the gas will rise more away from the liquid surface after heating, the protection layer mounted on the inner wall of the top surface can be well contacted with the gasified gas for absorption.
Example four
In this embodiment, the protective layer sets up in being close to near the fuel pipeline of automatically controlled valve, can effectively save the cost like this, and carries out oil-gas separation in the region of automatically controlled valve control, under the prerequisite of saving the cost, can not influence the accurate control of automatically controlled valve yet.
The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (10)
1. An electric control regulating valve control system is characterized by comprising a central processing unit, and an analog quantity module, a small relay, a pressure sensor, a flow meter and an electric control valve which are respectively connected with the central processing unit; the electric control valve, the pressure sensor and the flow meter are all arranged in the fuel oil pipeline, and the flow meter and the pressure sensor are electrically connected with the central processing unit through the analog quantity module; the electric control valve comprises a PS intelligent actuator, and the PS intelligent actuator comprises a microprocessor and a valve position resistor connected with the microprocessor; the valve position resistor is arranged on the valve; the microprocessor is electrically connected with the miniature relay.
2. The electronically controlled regulator valve control system of claim 1, wherein the microprocessor is further coupled to a temperature sensor disposed within the fuel line, the temperature sensor coupled to the analog module.
3. The electrically controlled regulator valve control system according to claim 1, wherein an automatic regulation strategy and an emergency treatment strategy are provided within the central processor; the central processing unit controls the small relay and the electric control valve to work by receiving signals transmitted by the analog quantity module from the pressure sensor and the flowmeter.
4. The electronically controlled regulator valve control system of claim 3, wherein the central processor controls the operation of the miniature relay and the electronically controlled valve in accordance with an emergency handling strategy by receiving signals from the analog module transmitted from the pressure sensor, the flow meter, and the temperature sensor.
5. The electrically controlled regulating valve control system according to claim 1, wherein a protective layer for oil-gas separation is provided in the fuel oil pipeline, and a temperature control circuit connected to the central processing unit is provided in the protective layer.
6. The electronically controlled regulator valve control system of claim 5, wherein the protective layer comprises a protective mesh for covering within the fuel conduit, and the temperature control circuit is disposed on the protective mesh.
7. The electric control regulating valve control system according to claim 6, wherein each grid of the protective net is connected with a culture tube filled with a biological sample, and both ends of the culture tube are provided with culture ports through which the biological sample can grow outwards.
8. The electronically controlled regulator valve control system of claim 7, wherein the temperature control circuit comprises a thermistor and a cooling fin extending into each of the plurality of culture tubes.
9. The control method of the electric control regulating valve is characterized by comprising the following steps of:
the method comprises the following steps that firstly, a pressure sensor and a flowmeter which are arranged in a fuel pipeline transmit pressure signals and flow signals in the fuel pipeline of the area to a central processing unit;
step two, the central processing unit controls the electric control valve to work according to a preset automatic regulation strategy;
and step three, the electric control valve controls the opening and closing state of the valve through a PS intelligent actuator.
10. The control method of the electric control regulating valve according to claim 9, wherein the central processing unit starts a temperature control circuit connected with the central processing unit according to a preset emergency strategy, and the biological sample in the culture tube is promoted to be produced through a thermistor or a refrigerating sheet and extends out of the culture port so that the protective net is covered by the biological sample to form a protective layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011191699.6A CN112228227A (en) | 2020-10-30 | 2020-10-30 | Control system and control method for electric control regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011191699.6A CN112228227A (en) | 2020-10-30 | 2020-10-30 | Control system and control method for electric control regulating valve |
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| CN112228227A true CN112228227A (en) | 2021-01-15 |
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| CN202011191699.6A Pending CN112228227A (en) | 2020-10-30 | 2020-10-30 | Control system and control method for electric control regulating valve |
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