CN117450100A - Anti-asthma valve control mechanism and control method - Google Patents
Anti-asthma valve control mechanism and control method Download PDFInfo
- Publication number
- CN117450100A CN117450100A CN202311394269.8A CN202311394269A CN117450100A CN 117450100 A CN117450100 A CN 117450100A CN 202311394269 A CN202311394269 A CN 202311394269A CN 117450100 A CN117450100 A CN 117450100A
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- valve
- port
- control mechanism
- controller
- asthma
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- 230000007246 mechanism Effects 0.000 title claims abstract description 38
- 230000001088 anti-asthma Effects 0.000 title claims abstract description 33
- 239000000924 antiasthmatic agent Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims description 10
- 230000001105 regulatory effect Effects 0.000 claims abstract description 36
- 238000006073 displacement reaction Methods 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 16
- 239000000446 fuel Substances 0.000 claims description 12
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 4
- 230000033228 biological regulation Effects 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 claims description 3
- 239000002828 fuel tank Substances 0.000 claims description 2
- 230000004044 response Effects 0.000 abstract description 3
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 13
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/02—Surge control
- F04D27/0207—Surge control by bleeding, bypassing or recycling fluids
- F04D27/0215—Arrangements therefor, e.g. bleed or by-pass valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/02—Surge control
- F04D27/0207—Surge control by bleeding, bypassing or recycling fluids
- F04D27/0223—Control schemes therefor
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lift Valve (AREA)
Abstract
The invention belongs to the technical field of design of air entraining devices of aeroengines, and particularly relates to an anti-asthma valve control mechanism, which comprises the following components: the device comprises a controller, an angular displacement sensor, a valve adjusting assembly and a valve; the shutter adjusting assembly includes: the valve seat, the rotating shaft, the driving shaft and the shell are arranged on the valve seat, four actuating cavities are formed between the rotating shaft and the valve seat, and two opposite actuating cavities in the four actuating cavities are communicated; the valve seat is arranged in the shell, and the shell is provided with a pressure regulating port and a constant pressure port; one of the two adjacent actuating cavities is communicated with the constant pressure port, the other actuating cavity is communicated with the pressure regulating port, the oil inlet amount of the pressure regulating port is controlled by the controller so as to realize rotation of the rotating shaft, the rotation is fixedly connected with the driving shaft, the driving shaft is connected with the valve, the opening of the valve can be regulated through rotation of the rotating shaft, and the angular displacement sensor detects the opening of the valve in real time and feeds back the opening to the controller. The invention has the advantages of continuously adjustable outlet flow and high control precision, and improves the sensitivity and response time of the anti-asthma valve control.
Description
Technical Field
The invention belongs to the design technology of air entraining devices of aero-engines, and relates to the design of an air entraining and anti-surge valve control mechanism of an aero-engine compressor.
Background
In order to prevent surge during take-off and landing of the aero-engine, the air release amount of the high-pressure compressor of the engine needs to be regulated, so that the surge margin of the high-pressure compressor during acceleration of the engine is improved, and the air-entraining anti-surge valve control mechanism of the aero-engine compressor is responsible for regulating the air flow of the outlet of the anti-surge valve. The traditional aeroengine bleed air anti-surge valve is mostly a linear motion control mechanism for pneumatic control and fuel control, the driving force can not directly drive the valve, the control mechanism is complex in structure and multiple in potential failure modes, the reliability of the anti-surge valve is seriously influenced, and particularly when the anti-surge valve encounters complex alternating pressure and alternating temperature, the problem of clamping stagnation can occur in a conversion rocker arm mechanism of the linear motion control mechanism.
Disclosure of Invention
The purpose of the invention is that: an anti-asthma valve control mechanism is provided to solve the technical problems in the background.
The technical scheme is as follows: in one aspect, the present invention provides an anti-asthma valve control mechanism, the control mechanism comprising: the device comprises a controller, an angular displacement sensor, a valve adjusting assembly and a valve;
the shutter adjusting assembly includes: the valve seat, the rotating shaft, the driving shaft and the shell are arranged on the valve seat, four actuating cavities are formed between the rotating shaft and the valve seat, and two opposite actuating cavities in the four actuating cavities are communicated; the valve seat is arranged in the shell, and the shell is provided with a pressure regulating port and a constant pressure port; one of the two adjacent actuating cavities is communicated with the constant pressure port, the other actuating cavity is communicated with the pressure regulating port, the oil inlet amount of the pressure regulating port is controlled by the controller so as to realize rotation of the rotating shaft, the rotation is fixedly connected with the driving shaft, the driving shaft is connected with the valve, the opening of the valve can be regulated through rotation of the rotating shaft, and the angular displacement sensor detects the opening of the valve in real time and feeds back the opening to the controller.
Further, an oil guiding groove is further formed in the shell, and when the valve is in a closed state, the oil guiding groove is communicated with each other through orifices in two adjacent control cavities; the cooling flow of the fuel oil can be effectively increased in the state, and the heat dissipation performance of the whole structure is improved.
Further, a one-way valve is arranged between the constant pressure port and the pressure regulating port, so that two groups of relatively arranged actuating cavities are prevented from being conducted, and the pressure required by sealing the upper end and the lower end of the rotating shaft is ensured.
Further, an oil leakage port is further formed in the shell, so that fuel leaked from the inside of the four actuating cavities is quickly led back to the fuel tank, and the fuel is prevented from leaking.
Furthermore, a temperature control valve is further arranged between the oil leakage port and the constant pressure port, and when the ambient temperature reaches a certain set value, the temperature control valve is automatically opened, so that the fuel flow is increased, and the heat dissipation performance of the whole structure is improved.
The invention also provides a control method of the anti-asthma valve, wherein the controller judges the actual rotation angle A of the butterfly plate by receiving the position signal of the butterfly plate in the channel of the anti-asthma valve fed back in real time by the angular displacement sensor; the controller also obtains the aircraft height simultaneously to judge the butterfly plate rotation angle A1 that actually prevents breathing freely needs to be adjusted according to the flight status, if butterfly plate aperture A is different with A1, the pressure of the valve pressure regulating mouth that prevents breathing freely is adjusted to the controller closed loop, makes pressure regulating mouth and constant pressure mouth produce different pressure differences, and the pivot rotates the rotatory certain angle of promotion valve butterfly plate that prevents breathing freely, in order to guarantee that the butterfly plate aperture reaches A1, the rotation angle of butterfly plate has decided the flow area of butterfly valve passageway, and the throttle effect of this flow area plays the purpose of regulation valve export flow that prevents breathing freely.
The invention has the technical effects that:
the invention relates to improvement of an aeroengine compressor bleed air butterfly valve control mechanism, and provides a novel aeroengine compressor bleed air anti-surge valve control mechanism and a novel aeroengine compressor bleed air anti-surge valve control method. The control mechanism is additionally provided with the one-way valve, so that the driving fuel is prevented from being mutually communicated during pressure conversion in the fuel cavity, the temperature control valve is arranged in the control mechanism, when the external temperature reaches the specified temperature, the temperature control valve is automatically opened, the fuel feeding capacity of the fuel is increased, heat generated by temperature rise is instantaneously taken away, the temperature rise of the control mechanism is prevented from being too high, the working reliability of components and parts in the control mechanism is influenced, and the use reliability of the anti-asthma valve is prolonged.
Said invention is characterized by that the outlet flow rate of said anti-asthma valve control mechanism is closed-loop controlled by controller, and its outlet flow rate is continuously adjustable, and its control accuracy is high, so that it can raise sensitivity and response time of anti-asthma valve control.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly explain the drawings required to be used in the embodiments of the present invention, and it is obvious that the drawings described below are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the anti-surge valve control mechanism of the present invention;
FIG. 2 is a schematic view showing an opened state of the anti-asthma door when the present invention is embodied;
FIG. 3 is a schematic view of the anti-surge gate in a closed state when the present invention is implemented;
the butterfly valve comprises a channel 1, a butterfly plate 2, a shaft 3, an actuating shell 4, a first sealing ring 5, a one-way valve 6, a temperature control valve 7, an angular displacement sensor 8, a second sealing ring 9, a sealing block 10, an upper valve seat 11, an upper valve seat sealing ring 12, a one-way valve 13, a rotating shaft 14, a lower valve seat 15, a lower valve seat sealing ring 16 and a sealing block 17.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without making any inventive effort are intended to fall within the scope of the present invention.
Features and exemplary embodiments of various aspects of the invention are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by showing examples of the invention. The present invention is in no way limited to any particular arrangement and method set forth below, but rather covers any adaptations, alternatives, and modifications of structure, method, and device without departing from the spirit of the invention. In the drawings and the following description, well-known structures and techniques have not been shown in detail in order not to unnecessarily obscure the present invention.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other, and the embodiments may be referred to and cited with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
The invention provides a novel aeroengine compressor bleed air anti-surge valve control mechanism which directly acts on a valve through a rotating mechanism to drive the valve to move, and the control structure principle is simple and reliable. The air entraining butterfly valve control mechanism of the aeroengine compressor is improved so as to prolong the use reliability of the anti-surge valve and improve the sensitivity and response time of the control of the anti-surge valve.
FIG. 1 is a schematic diagram of an embodiment of an anti-asthma valve control mechanism and a control method thereof.
Referring to fig. 1, the anti-asthma valve control mechanism is composed of a channel 1, a butterfly plate 2, a shaft 3, an actuating housing 4, a first sealing ring 5, a one-way valve 6, a temperature control valve 7, an angular displacement sensor 8, a second sealing ring 9, a sealing block 10, an upper valve seat 11, an upper valve seat sealing ring 12, a one-way valve 13, a rotating shaft 14, a lower valve seat 15, a lower valve seat sealing ring 16, a sealing block 17 and the like. In the closed state, the butterfly plate 2 divides the channel 1 into two sections, so that the inlet and the outlet of the butterfly valve are blocked, and the inlet pressure cannot be led to the outlet. Referring to fig. 2, when the butterfly valve butterfly plate 2 rotates by a certain angle, a flow passage is formed between the butterfly plate 2 and the passage 1, the inlet pressure can be led to the outlet, and the flow area of the flow passage is in a certain relation with the rotation angle of the butterfly plate 2; the larger the rotation angle of the butterfly plate 2, the larger the outlet flow rate, and the smaller the rotation angle of the butterfly plate 2, the smaller the outlet flow rate.
Referring to fig. 3, when the pressure regulating port pressure is smaller than the constant pressure port pressure, since the actuating chambers a and C are communicated with each other, the internal pressures of the actuating chambers a and C simultaneously push the rotary shaft 14 to rotate toward the closed position, the rotary shaft 14 drives the shaft 3 and the butterfly plate 2 to be in the closed position, and at this time, the actuating chambers a, C and B and D are communicated with each other through the orifice a and the orifice B, and the anti-asthma shutter control mechanism is in the closed state.
Referring to fig. 2, when the pressure regulating port pressure is greater than the constant pressure port pressure, since the actuating chambers D and B are communicated with each other, the internal pressures of the actuating chambers D and B simultaneously push the rotation shaft 14 to rotate toward the open position, the rotation shaft 14 drives the shaft 3 and the butterfly plate 2 to be in the open position, and at this time, the actuating chambers a, C and B and D cannot be communicated with each other, and the anti-asthma shutter control mechanism is in the open state. The opening angle of the butterfly plate 2 is fed back to the controller through the angular displacement sensor, and the controller controls the pressure of the pressure regulating port to enable the butterfly plate 2 to be opened to a specific angle, so that the requirement of the system on the air release amount is met. In some specific embodiments, the rotating shaft and the driving shaft are fixed into a whole through a bolt; to ensure consistency of rotation transmission; the controller, the angular displacement sensor and the valve adjusting component can be integrated in the same control shell; so as to reduce the weight of the whole structure and the volume of the space.
Referring to fig. 1, when the anti-surge valve is in an opened state or in a closed state, and the temperature reaches a set value as the temperature of the inside or outside environment of the anti-surge valve increases, the temperature control valve 7 in the anti-surge valve control mechanism is opened, and the oil flows out of the anti-surge valve through the oil leakage port, so that the circulation capacity of oil in the anti-surge valve is increased, and the temperature rise in the inside of the anti-surge valve is prevented from being too high.
The innovative design points of the invention are mainly embodied in the following aspects:
the core innovation design points are as follows: the controller adjusts the pressure of a pressure regulating port of the anti-surge valve in a closed loop by receiving a butterfly plate position voltage signal in an anti-surge valve channel fed back by the angular displacement sensor, so that the rotating shaft rotates by a certain angle, and the pressure regulating port is communicated with the constant pressure port through an orifice, thereby ensuring the flow of oil in the anti-surge valve control mechanism. The controller is through adjusting the pressure of pressure regulating mouth for pressure regulating mouth and constant voltage mouth produce different pressure differences, and the pivot rotates the rotatory certain angle of promotion anti-surge valve butterfly plate, and the rotation angle of butterfly plate has decided the flow area of butterfly valve passageway, and the throttle effect of this flow area plays the purpose of regulation anti-surge valve export flow.
Minor innovative design point 1: the rotation angle of the anti-asthma valve butterfly plate is fed back to the controller through the angular displacement sensor, and the controller enables the angle of the anti-asthma valve butterfly plate to reach a required value set by a system through adjusting the pressure difference between the pressure regulating port and the constant pressure port. If the angle of the anti-asthma valve butterfly plate is smaller than a set value, the controller increases the pressure of the pressure regulating port, and drives the rotating shaft to rotate towards the opening direction of the butterfly plate; if the angle of the butterfly plate of the anti-asthma valve is larger than a set value, the controller reduces the pressure of the pressure regulating port and drives the rotating shaft to rotate towards the closing direction of the butterfly plate.
Secondary innovative design point 2: when the anti-asthma valve is in a closed state, the pressure regulating port is communicated with the constant pressure port through the throttling hole, so that oil is in a circulation state in the anti-asthma valve.
Minor innovative design point 3: when the anti-asthma valve is in an open state, the throttle hole between the pressure regulating port and the constant pressure port is closed, so that the pressure difference between the pressure regulating port and the constant pressure port is ensured.
Secondary innovation design point 4: when the internal temperature of the anti-asthma valve or the ambient temperature reaches a set value, the temperature control valve in the anti-asthma valve control mechanism is opened, so that the circulation capacity of oil is improved, and the temperature rise in the anti-asthma valve is prevented from being too high.
Secondary innovative design point 5: when the constant pressure port is filled with oil with certain pressure, the one-way valve at one side of the constant pressure port is opened, and the one-way valve at one side of the pressure regulating port is closed, so that the sealing block is ensured to be sealed under certain pressure.
Secondary innovative design point 6: when the pressure regulating port is filled with oil with certain pressure, the one-way valve at one side of the pressure regulating port is opened, and the one-way valve at one side of the constant pressure port is closed, so that the sealing block is ensured to be sealed under certain pressure.
Secondary innovation design point 7: the angular displacement sensor is designed with double margin, and in the working process of the anti-asthma valve, the two-channel coil is electrified simultaneously to provide a channel butterfly plate corner position signal for the controller.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think about various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered in the scope of the present invention.
Claims (8)
1. An anti-surge valve control mechanism, said control mechanism comprising: the device comprises a controller, an angular displacement sensor, a valve adjusting assembly and a valve;
the shutter adjusting assembly includes: the valve seat, the rotating shaft, the driving shaft and the shell are arranged on the valve seat, four actuating cavities are formed between the rotating shaft and the valve seat, and two opposite actuating cavities in the four actuating cavities are communicated; the valve seat is arranged in the shell, and the shell is provided with a pressure regulating port and a constant pressure port; one of the two adjacent actuating cavities is communicated with the constant pressure port, the other actuating cavity is communicated with the pressure regulating port, the oil inlet amount of the pressure regulating port is controlled by the controller so as to realize rotation of the rotating shaft, the rotation is fixedly connected with the driving shaft, the driving shaft is connected with the valve, the opening of the valve can be regulated through rotation of the rotating shaft, and the angular displacement sensor detects the opening of the valve in real time and feeds back the opening to the controller.
2. The anti-asthma valve control mechanism of claim 1, wherein the housing is further provided with oil grooves which communicate with each other through orifices in adjacent two of the control chambers when the valve is in the closed position.
3. The anti-asthma valve control mechanism according to claim 1, wherein a one-way valve is arranged between the constant pressure port and the pressure regulating port to prevent the conduction of two sets of oppositely arranged actuating chambers and ensure the pressure required by the sealing of the upper end and the lower end of the rotating shaft.
4. The anti-surge valve control mechanism according to claim 1, wherein the casing is further provided with a fuel leakage port for rapidly guiding fuel leaked from the inside of the four actuating chambers back to the fuel tank to prevent the fuel from leaking.
5. The anti-asthma valve control mechanism according to claim 4, wherein a temperature control valve is further arranged between the oil leakage port and the constant pressure port, and when the ambient temperature reaches a certain set value, the temperature control valve is automatically opened to increase the fuel flow and improve the heat dissipation performance of the whole structure.
6. The anti-asthma valve control mechanism of claim 1, wherein the shaft is integrally fixed to the drive shaft by a latch.
7. The anti-surge valve control mechanism according to claim 1, wherein said controller, angular displacement sensor, valve adjustment assembly are integrated into the same control housing.
8. The anti-asthma valve control method is characterized in that a controller judges the actual rotation angle A of a butterfly plate by receiving a butterfly plate position signal in an anti-asthma valve channel fed back in real time by an angular displacement sensor; the controller also obtains the aircraft height simultaneously to judge the butterfly plate rotation angle A1 that actually prevents breathing freely needs to be adjusted according to the flight status, if butterfly plate aperture A is different with A1, the pressure of the valve pressure regulating mouth that prevents breathing freely is adjusted to the controller closed loop, makes pressure regulating mouth and constant pressure mouth produce different pressure differences, and the pivot rotates the rotatory certain angle of promotion valve butterfly plate that prevents breathing freely, in order to guarantee that the butterfly plate aperture reaches A1, the rotation angle of butterfly plate has decided the flow area of butterfly valve passageway, and the throttle effect of this flow area plays the purpose of regulation valve export flow that prevents breathing freely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311394269.8A CN117450100A (en) | 2023-10-25 | 2023-10-25 | Anti-asthma valve control mechanism and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311394269.8A CN117450100A (en) | 2023-10-25 | 2023-10-25 | Anti-asthma valve control mechanism and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117450100A true CN117450100A (en) | 2024-01-26 |
Family
ID=89581088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311394269.8A Pending CN117450100A (en) | 2023-10-25 | 2023-10-25 | Anti-asthma valve control mechanism and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117450100A (en) |
-
2023
- 2023-10-25 CN CN202311394269.8A patent/CN117450100A/en active Pending
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