CN115234691B - High-altitude valve device of engine lubricating oil system and control method - Google Patents
High-altitude valve device of engine lubricating oil system and control method Download PDFInfo
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- CN115234691B CN115234691B CN202210910082.8A CN202210910082A CN115234691B CN 115234691 B CN115234691 B CN 115234691B CN 202210910082 A CN202210910082 A CN 202210910082A CN 115234691 B CN115234691 B CN 115234691B
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- 239000010687 lubricating oil Substances 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims description 10
- 238000004891 communication Methods 0.000 claims abstract description 25
- 230000007423 decrease Effects 0.000 claims description 8
- 239000010705 motor oil Substances 0.000 claims description 8
- 238000009423 ventilation Methods 0.000 claims description 8
- 239000007858 starting material Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 8
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
-
- 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
- F02C7/06—Arrangements of bearings; Lubricating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Safety Valves (AREA)
Abstract
The invention relates to a high-altitude valve device of an engine lubricating oil system, which comprises: an oil-gas separator interface, an atmosphere communication pipe orifice and an electromagnetic valve; the electromagnetic valve is connected between the oil-gas separator interface and the atmosphere communication pipe orifice; the side parts of the oil-gas separator interface and the atmospheric communication pipe orifice are also provided with bent pipes; one end of the bent pipe is connected with the interface of the oil-gas separator, and the other end of the bent pipe is connected with the opening of the atmosphere communication pipe; a differential pressure valve is arranged at one end of the bent pipe, which is connected with the interface of the oil-gas separator; the differential pressure valve comprises a large valve seat, a large spring, a small valve seat and a small spring; the large spring is matched with the large valve seat, and the small spring is matched with the small valve seat; the other end of the small spring is provided with a cone valve and a plane valve; the flat valve is sleeved outside the cone valve, and the side part is matched with the small valve seat.
Description
Technical Field
The invention relates to the technical field of aeroengines, in particular to an engine lubricating oil system high-altitude valve device and a control method.
Background
The free ventilation system is a commonly adopted mode of an aeroengine lubricating oil system, and the high-altitude valve device of the system can ensure that the engine lubricating oil system still meets smooth supply of a lubricating oil pump under the condition of extremely low external atmospheric pressure at high altitude, so that it is particularly important to master the working characteristics of a key component high-altitude valve assembly of the system. The existing engine high-altitude valve device comprises a bellows type bellows valve and an elastic valve, wherein the bellows valve comprises two open bellows and a closed bellows and is used for sensing the pressure in the atmosphere and a bearing cavity and temperature change, the bellows valve and an inner cavity vent pipe form a throttling channel, and the gas flow area is changed and regulated through the working stroke of the bellows.
The current high-altitude valve device is composed of a bellows type bellows valve and an elastic valve (shown in figure 4), two ends of the bellows are fixed on a bellows shell by welding, and a spring is arranged in the middle part of the bellows; a constant pressure valve is arranged in the cavity, and the gas flow area is changed and regulated through the working stroke of the corrugated pipe. The structure is complex to install, the pressure bellows is easy to age, sensitivity generated by damage is reduced, and the formed corrugated pipe is easy to generate plastic deformation and has axial instability risk under large pressure load. Therefore, it is particularly important to develop other high-altitude valves with simple structures and high safety.
Disclosure of Invention
According to the high-altitude valve device and the control method of the engine lubricating oil system, when the gas pressure difference between the lubricating oil tank and the outside reaches a design value, the balance can be carried out through the differential pressure valve, and when the differential pressure between the lubricating oil tank and the outside is normal, the lubricating oil tank is directly communicated with the outside by opening the electromagnetic valve.
The technical aim of the invention is realized by the following technical scheme:
in one aspect of the present disclosure, an engine oil system overhead shutter apparatus is disclosed, comprising:
an oil-gas separator interface, an atmosphere communication pipe orifice and an electromagnetic valve;
the electromagnetic valve is connected between the oil-gas separator interface and the atmosphere communication pipe orifice;
the oil-gas separator interface and the side part of the atmospheric communication pipe orifice are also provided with an elbow;
one end of the bent pipe is connected with the oil-gas separator interface, and the other end of the bent pipe is connected with the atmosphere communication pipe orifice;
the end of the bent pipe connected with the oil-gas separator interface is provided with a differential pressure valve;
the differential pressure valve comprises a large valve seat, a large spring, a small valve seat and a small spring;
the large spring is matched with the large valve seat, and the small spring is matched with the small valve seat;
the other end of the small spring is provided with a cone valve and a plane valve;
the flat valve is sleeved outside the cone valve, and the side part of the flat valve is matched with the small valve seat.
Further, an electrical connector is included, which is connected with the external starter box.
Further, an emergency channel is arranged on the side part of the differential pressure valve.
Further, a valve is arranged in the emergency channel.
Further, the elbow is connected with the differential pressure valve through a first nut.
Further, the bent pipe is connected with the connecting end of the atmosphere communication pipe orifice through a second nut.
Further, the small valve seat is provided with a first air passage and a second air passage, and after the flat valve is pushed away towards the direction of the large spring, the first air passage enables air to circulate in the differential pressure valve; and after the cone valve is pushed away in the direction away from the big spring, the second ventilation channel is communicated with the first ventilation channel.
In another aspect of the present disclosure, a method for controlling a high-altitude valve device of an engine lubricating oil system is disclosed, comprising the steps of:
when flying below the set height, the starting box controls the electromagnetic valve to be in an open state, so that the interface of the oil-gas separator and the opening of the atmosphere communication pipe are in a communicated state;
after the flying height reaches above the set height, the starting box controls the electromagnetic valve to be in a closed state, and the pressure difference valve regulates the on-off of the air flow;
as the flying height increases, the external air pressure gradually decreases, when the pressure difference between two ends of the lubricating oil tank is larger than the threshold value capable of extruding a large spring, the flat plate valve and the cone valve in the differential pressure valve are synchronously pushed away, and the air passage of the differential pressure valve is opened, so that high-pressure lubricating oil steam is discharged into the atmosphere through the bent pipe;
when the flying height suddenly decreases, the external air pressure gradually increases, and when the external pressure is larger, the pressure difference between two ends reaches the threshold value capable of extruding the small spring, the cone valve is pushed away from the flat valve by the pressure in the lubricating oil tank in the differential pressure valve, and the air passage of the differential pressure valve is opened, so that the lubricating oil tank is communicated with the atmosphere through the bent pipe.
Further, when the differential pressure valve fails, the pressure of the lubricating oil tank is alarmed, a valve on an emergency channel of the differential pressure valve receives a control signal of the starting tank and is placed in an open position, so that the interior of the lubricating oil tank is communicated with the atmosphere.
The beneficial effects of the invention are as follows:
according to the invention, through a simple structure, when the gas pressure difference between the lubricating oil tank and the outside reaches a design value, the balance can be performed through the differential pressure valve, and when the differential pressure between the lubricating oil tank and the outside is normal, the lubricating oil tank is directly communicated with the outside by opening the electromagnetic valve, so that the differential pressure safety between the lubricating oil tank and the outside can be quickly balanced, and the structure is simple, convenient and ingenious and is not easy to damage.
Drawings
FIG. 1 is a block diagram of a high altitude shutter apparatus;
FIG. 2 is a block diagram of a differential pressure valve;
FIG. 3 is a schematic illustration of the connection of the high-altitude valve assembly to the oil system;
fig. 4 is a structural view of a prior art high-altitude shutter device.
1. An interface of the oil-gas separator; 2. an atmosphere communication pipe orifice; 3. an electromagnetic valve; 4. bending the pipe; 5. a differential pressure valve; 6. an emergency channel; 7. an electrical connector; 51. a large valve seat; 52. a large spring; 53. a small valve seat; 54. a small spring; 55. a cone valve; 56. a flat plate valve; 61. a valve; 531. a first air duct; 532. and a second ventilation channel.
Detailed Description
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The objects, technical solutions and advantages of the present invention will become more apparent by the following detailed description of the present invention with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
As shown in fig. 1-4, the present invention discloses a high-altitude valve device of an engine lubricating oil system, comprising:
the oil-gas separator comprises an oil-gas separator interface 1, an atmosphere communication pipe orifice 2 and an electromagnetic valve 3;
the electromagnetic valve 3 is connected between the oil-gas separator interface 1 and the atmosphere communication pipe orifice 2;
the side parts of the oil-gas separator interface 1 and the atmosphere communication pipe orifice 2 are also provided with an elbow 4;
one end of the bent pipe 4 is connected with the oil-gas separator interface 1, and the other end is connected with the atmosphere communication pipe orifice 2;
the end of the bent pipe 4 connected with the oil-gas separator interface 1 is provided with a differential pressure valve 5;
the differential pressure valve 5 comprises a large valve seat 51, a large spring 52, a small valve seat 53 and a small spring 54;
the large spring 52 is matched with the large valve seat 51, and the other end of the large spring is matched with the flat valve 56; the small spring 54 is matched with the small valve seat 53, and the other end of the small spring is matched with the cone valve 55;
the other end of the small spring 54 is provided with a cone valve 55 and a plane valve 56;
the flat plate shutter 56 is sleeved outside the cone shutter 55, and the side part is matched with the small shutter seat 53.
Specifically, as shown in fig. 4, the oil tank is provided with a vent, air and oil vapor at the upper part of the oil tank enter the oil-gas separator along the vent pipe, after the oil gas is separated by the oil-gas separator, the gas enters the high-altitude valve assembly (namely the high-altitude valve device) through the oil-gas separator interface 1 and is discharged into the atmosphere from the atmosphere communication pipe orifice 2, and the oil flows back to the oil tank. In the differential pressure valve 5, the end of the large valve seat 51 is connected with the bent pipe 4 connected with the atmosphere communication pipe orifice 2, and the end of the small valve seat 53 is connected with the oil-gas separator interface 1. In the differential pressure shutter 5, when the pressure in the oil tank is large and the pressure difference between both ends reaches a threshold value capable of pressing the large spring 52, the pressure synchronously pushes the cone shutter 55 and the plate shutter 56 in a direction of compressing the large spring 52, so that the air passage is opened. When the external pressure is high, as the pressure difference is high to the threshold value capable of pushing the small spring 54, the pressure in the pressure difference valve 5 pushes the cone valve 55 towards the direction of compressing the small spring 54, so that the air path is opened, and the lubricating oil tank is communicated with the outside through the bent pipe 4 to balance the pressure difference.
In some embodiments, the overhead shutter assembly further comprises an electrical connector 7, the electrical connector 7 being connected to an external starter box.
The starting box can regulate and control the valve device, and when the valve device is normally used, the electromagnetic valve 3 is opened to enable the lubricating oil box to be directly communicated with the outside so as to balance the pressure difference; when the flying height is more than the set height or the flying height suddenly decreases, the air pressure difference between the lubricating oil tank and the outside is larger, the starting box closes the electromagnetic valve 3, and the differential pressure valve 5 balances the pressure difference.
In some embodiments, the differential pressure valve 5 is provided with an emergency channel 6 on the side.
In some embodiments, a valve 61 is provided in the emergency channel 6.
By adopting the technical scheme, the emergency channel 6 is arranged, and the valve 61 is arranged in the emergency channel 6, so that when the differential pressure valve 5 fails, the emergency channel 6 is opened by opening the valve 61 to enable the lubricating oil tank to be communicated with the outside, so that the differential pressure is balanced.
In some embodiments, the elbow 4 is connected to the differential pressure valve 5 by a first nut.
In some embodiments, the elbow 4 is connected to the connection end of the atmospheric air port 2 by a second nut.
By adopting the technical scheme, the connecting end of the bent pipe 4 is connected with the corresponding butt joint end in a nut connecting mode, so that the bent pipe 4 is convenient to detach and replace.
In some embodiments, the small shutter seat 53 has a first air passage 531 and a second air passage 532, and the first air passage 531 circulates air in the differential pressure shutter 5 after pushing open the flat shutter 56 toward the large spring 52; when the cone shutter 55 is pushed away in a direction away from the large spring 52, the second ventilation duct 532 communicates with the first ventilation duct 531.
With the above technical solution, in the differential pressure valve 5, when the pressure in the lubricant tank is large and the pressure difference between the two ends reaches the threshold value capable of squeezing the large spring 52, the pressure will push the cone valve 55 and the plate valve 56 synchronously in the direction of compressing the large spring 52, and the first air passage 531 is opened and communicated with the inside of the differential pressure valve 5. When the external air pressure is large, the pressure in the differential pressure valve 5 pushes the cone valve 55 towards the direction of compressing the small spring 54, the second air passage 532 is opened to be communicated with the first air passage 531 to the bent pipe 4, so that the air passage is opened, and the lubricating oil tank is communicated with the external environment through the bent pipe 4 to balance the pressure difference
The invention also discloses a control method of the high-altitude valve device of the engine lubricating oil system, which comprises the following steps:
when flying below the set height, the starting box controls the electromagnetic valve to be in an open state, so that the interface of the oil-gas separator and the opening of the atmosphere communication pipe are in a communicated state;
after the flying height reaches above the set height, the starting box controls the electromagnetic valve to be in a closed state, and the pressure difference valve regulates the on-off of the air flow;
as the flying height increases, the external air pressure gradually decreases, when the pressure difference between two ends of the lubricating oil tank is larger than the threshold value capable of extruding a large spring, the flat plate valve and the cone valve in the differential pressure valve are synchronously pushed away, and the air passage of the differential pressure valve is opened, so that high-pressure lubricating oil steam is discharged into the atmosphere through the bent pipe;
when the flying height suddenly decreases, the external air pressure gradually increases, and when the external pressure is larger, the pressure difference between two ends reaches the threshold value capable of extruding the small spring, the cone valve is pushed away from the flat valve by the pressure in the lubricating oil tank in the differential pressure valve, and the air passage of the differential pressure valve is opened, so that the lubricating oil tank is communicated with the atmosphere through the bent pipe.
Further, when the differential pressure valve fails, the pressure of the lubricating oil tank is alarmed, a valve on an emergency channel of the differential pressure valve receives a control signal of the starting tank and is placed in an open position, so that the interior of the lubricating oil tank is communicated with the atmosphere.
In a more specific implementation process, in order to ensure the stability of the lubricating oil system, when the pressure in the lubricating oil tank is larger, the safety pressure required for opening the differential pressure valve is 14-18 kPa, and 16kPa is taken in the embodiment; the required safety pressure for the differential valve to open when the atmospheric pressure is greater is 8 to 12kPa, 10kPa in this embodiment. And a large spring and a small spring in the differential pressure valve are designed according to the lubricating oil pressure safety value, and the caliber value is measured. The force balance at the flat plate valve in the differential pressure valve under the normal state is as follows:
F big size ＝F Small size +P.s+f, where F Big size Is of large spring force, F Small size The spring force of the small spring is that P is the opening pressure of the high-altitude valve, S is the area of the pressure acting on one end of the cone valve close to the small spring, and f is the friction force of the cone valve. The cone valve static friction force f is measured by test.
The force balance at the conical valve is as follows:
F small size +f=p×s, where S is the area where pressure acts on the end of the cone valve away from the small spring.
F Big size 、F Small size The spring is designed according to the material:wherein G = wire stiffness modulus; DM = spring pitch diameter; NC = total turns-2; d = wire diameter; k is the elastic coefficient; f=k (L-H); l = total spring length; h = spring compressed length.
As shown in fig. 1-4, below a certain flying altitude, the solenoid valve 3 in the overhead shutter assembly (i.e., the overhead shutter device) receives the trigger box control signal and is placed in an open position to vent the interior of the lubricant box to atmosphere. When the flying height is above a certain height, the electromagnetic valve 3 in the high-altitude valve assembly receives a starting box control signal and is placed at a closed position, and the pressure difference valve 5 controls the on-off of the lubricating oil box and the atmosphere. Along with the increase of the flying height, the external air pressure is gradually reduced, when the pressure in the lubricating oil tank is 16kPa greater than the external air pressure, the flat plate valve and the cone valve are synchronously pushed away in the differential pressure valve, and the air passage of the differential pressure valve is opened, so that high-pressure lubricating oil steam is discharged into the atmosphere through the bent pipe. Similarly, when the flying height suddenly decreases and the external atmospheric pressure gradually increases, when the external atmospheric pressure is 10kPa higher than the internal pressure of the lubricating oil tank, the cone valve is pushed away from the flat valve by the internal pressure of the lubricating oil tank in the differential pressure valve, and the air passage of the differential pressure valve is opened, so that the lubricating oil tank is communicated with the atmosphere through the bent pipe, and the internal pressure of the lubricating oil tank rises until balanced. When the differential pressure valve 5 fails, the pressure of the lubricating oil tank alarms, and the valve 61 on the bypass (namely the emergency channel 6) of the differential pressure valve 5 receives a control signal of the starting box and is placed in an open position, so that the interior of the lubricating oil tank is communicated with the atmosphere through the emergency channel 6.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and are in no way limiting of the invention. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present invention should be included in the scope of the present invention. Furthermore, the appended claims are intended to cover all such changes and modifications that fall within the scope and boundary of the appended claims, or equivalents of such scope and boundary.
Claims (9)
1. An engine oil system overhead shutter apparatus, comprising:
an oil-gas separator interface, an atmosphere communication pipe orifice and an electromagnetic valve;
the electromagnetic valve is connected between the oil-gas separator interface and the atmosphere communication pipe orifice;
the oil-gas separator interface and the side part of the atmospheric communication pipe orifice are also provided with an elbow;
one end of the bent pipe is connected with the oil-gas separator interface, and the other end of the bent pipe is connected with the atmosphere communication pipe orifice;
the end of the bent pipe connected with the oil-gas separator interface is provided with a differential pressure valve;
the differential pressure valve comprises a large valve seat, a large spring, a small valve seat and a small spring;
the large spring is matched with the large valve seat, and the small spring is matched with the small valve seat;
the other end of the small spring is provided with a cone valve and a plane valve;
the flat valve is sleeved outside the cone valve, and the side part of the flat valve is matched with the small valve seat.
2. An engine oil system overhead door assembly according to claim 1, wherein:
also included is an electrical connector that is connected with the external starter box.
3. An engine oil system overhead door assembly according to claim 2, wherein:
and an emergency passage is arranged at the side part of the differential pressure valve.
4. A high altitude valve apparatus for an engine oil system as claimed in claim 3, wherein:
and a valve is arranged in the emergency channel.
5. An engine oil system overhead door assembly according to claim 1, wherein:
the elbow pipe is connected with the differential pressure valve through a first nut.
6. An engine oil system overhead door assembly according to claim 1, wherein:
the bent pipe is connected with the connecting end of the atmosphere communication pipe orifice through a second nut.
7. An engine oil system overhead door assembly according to claim 1, wherein:
the small valve seat is provided with a first air passage and a second air passage, and after the flat valve is pushed away towards the direction of the large spring, the first air passage enables air to circulate in the differential pressure valve; and after the cone valve is pushed away in the direction away from the big spring, the second ventilation channel is communicated with the first ventilation channel.
8. A control method of an engine lubricating oil system high-altitude valve device, which is applied to the engine lubricating oil system high-altitude valve device according to any one of claims 1 to 7, and is characterized by comprising the following steps:
when flying below the set height, the starting box controls the electromagnetic valve to be in an open state, so that the interface of the oil-gas separator and the opening of the atmosphere communication pipe are in a communicated state;
after the flying height reaches above the set height, the starting box controls the electromagnetic valve to be in a closed state, and the pressure difference valve regulates the on-off of the air flow;
as the flying height increases, the external air pressure gradually decreases, when the pressure difference between two ends of the lubricating oil tank is larger than the threshold value capable of extruding a large spring, the flat plate valve and the cone valve in the differential pressure valve are synchronously pushed away, and the air passage of the differential pressure valve is opened, so that high-pressure lubricating oil steam is discharged into the atmosphere through the bent pipe;
when the flying height suddenly decreases, the external air pressure gradually increases, and when the external pressure is larger, the pressure difference between two ends reaches the threshold value capable of extruding the small spring, the cone valve is pushed away from the flat valve by the pressure in the lubricating oil tank in the differential pressure valve, and the air passage of the differential pressure valve is opened, so that the lubricating oil tank is communicated with the atmosphere through the bent pipe.
9. The control method of the engine lubricating oil system high-altitude valve device according to claim 8, wherein:
when the differential pressure valve fails, the pressure of the lubricating oil tank is alarmed, a valve on an emergency channel of the differential pressure valve receives a control signal of the starting tank and is placed in an opening position, so that the interior of the lubricating oil tank is communicated with the atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210910082.8A CN115234691B (en) | 2022-07-29 | 2022-07-29 | High-altitude valve device of engine lubricating oil system and control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210910082.8A CN115234691B (en) | 2022-07-29 | 2022-07-29 | High-altitude valve device of engine lubricating oil system and control method |
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| CN115234691A CN115234691A (en) | 2022-10-25 |
| CN115234691B true CN115234691B (en) | 2023-08-25 |
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| CN115750094A (en) * | 2022-11-10 | 2023-03-07 | 合肥江航飞机装备股份有限公司 | Pressure regulating valve for bearing cavity of aero-engine and testing method thereof |
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|---|---|---|---|---|
| US4319604A (en) * | 1980-02-19 | 1982-03-16 | Modern Engineering Company, Inc. | Safety shut-off valve |
| US6253708B1 (en) * | 1999-08-31 | 2001-07-03 | Dwight N. Johnson | Remote controlled drinker system and drinker line control valve |
| CN201116481Y (en) * | 2007-05-11 | 2008-09-17 | 北汽福田汽车股份有限公司 | Internal combustion engine and crankcase ventilating device thereof |
| CN203130512U (en) * | 2013-02-04 | 2013-08-14 | 何东 | Combination valve for screw air compressor |
| CN111350563A (en) * | 2018-12-24 | 2020-06-30 | 观致汽车有限公司 | Two-way valve for positive crankcase ventilation |
| CN113417746A (en) * | 2021-06-25 | 2021-09-21 | 东风商用车有限公司 | Diaphragm capsule type dual-fuel pressure coordination valve |
-
2022
- 2022-07-29 CN CN202210910082.8A patent/CN115234691B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4319604A (en) * | 1980-02-19 | 1982-03-16 | Modern Engineering Company, Inc. | Safety shut-off valve |
| US6253708B1 (en) * | 1999-08-31 | 2001-07-03 | Dwight N. Johnson | Remote controlled drinker system and drinker line control valve |
| CN201116481Y (en) * | 2007-05-11 | 2008-09-17 | 北汽福田汽车股份有限公司 | Internal combustion engine and crankcase ventilating device thereof |
| CN203130512U (en) * | 2013-02-04 | 2013-08-14 | 何东 | Combination valve for screw air compressor |
| CN111350563A (en) * | 2018-12-24 | 2020-06-30 | 观致汽车有限公司 | Two-way valve for positive crankcase ventilation |
| CN113417746A (en) * | 2021-06-25 | 2021-09-21 | 东风商用车有限公司 | Diaphragm capsule type dual-fuel pressure coordination valve |
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| CN115234691A (en) | 2022-10-25 |
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Denomination of invention: A high-altitude valve device and control method for engine oil system Granted publication date: 20230825 Pledgee: CITIC Bank Nanchang branch of Limited by Share Ltd. Pledgor: Jiangxi Zhongfa Tianxin Aero Engine Technology Co.,Ltd. Registration number: Y2024980008468 |