CN111112239A - Passive self-cleaning type antifouling current limiting device - Google Patents
Passive self-cleaning type antifouling current limiting device Download PDFInfo
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- CN111112239A CN111112239A CN201911353717.3A CN201911353717A CN111112239A CN 111112239 A CN111112239 A CN 111112239A CN 201911353717 A CN201911353717 A CN 201911353717A CN 111112239 A CN111112239 A CN 111112239A
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- Prior art keywords
- flow
- decontamination
- steel wire
- limiting device
- fouling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/02—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by distortion, beating, or vibration of the surface to be cleaned
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
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- Details Of Valves (AREA)
Abstract
The invention belongs to the antifouling technical field of a small hole structure of a mechanical fluid system, and discloses a passive self-cleaning antifouling current-limiting device, which is used for an antifouling current-limiting device of an airplane.A spacer frame is pressed on a sealing pad through a compression screw to realize the isolation of a high-pressure cavity and a low-pressure cavity of a flow passage, a decontamination steel wire can be tightly connected with a holding block and then passes through a throttling hole of the spacer frame, the inherent frequencies of the decontamination steel wire and the spacer frame have larger difference, the design can realize the relative motion of the decontamination steel wire in the throttling hole of the spacer frame by utilizing a vibration source of an engine on the airplane, so that the decontamination steel wire can be stirred at high frequency in the throttling hole to achieve the aim of real-time decontamination, meanwhile, an inlet and an outlet of the device can rotate around the axis of the device and appropriately move in the length direction to be butted with the flow passage of a valve according to, to ensure the sealing of the valve and the integrity of the flow passage.
Description
Technical Field
The invention belongs to the technical field of antifouling of small hole structures of mechanical fluid systems, and particularly relates to a passive self-cleaning type antifouling flow limiting device.
Background
In the design of many precise valve elements in aircraft systems, due to functional requirements, very small flow passages are provided inside the valve elements, and the pressure provided by the medium in these flow passages is generally used to ensure that the actuating components of the valve elements perform corresponding actions accurately when the pressure reaches a set pressure point.
Therefore, the requirement on the stability of the pressure of the flow passage is high, because of the severe requirement of aviation products on the weight, a complex pressure reducing or stabilizing structure is often not allowed to be adopted to ensure the pressure stability in the flow passage, a very small flow limiting hole is often directly adopted to realize the pressure reduction from a high-pressure cavity to a low-pressure cavity, the pressure value of the low-pressure cavity is ensured by adjusting the size of the aperture of the flow limiting hole according to the design requirement, the aperture of the flow limiting hole is generally small and even smaller than 0.5mm, in this case, the smoothness of the flow limiting hole is required to be ensured, impurities are not allowed to block the flow limiting hole, the aperture of the flow limiting hole is changed, and the cleanliness of the medium flowing through the flow passage often cannot meet the corresponding requirement.
The general approach is to improve the surface finish of the flow-restricting orifice; spraying smooth coating on the surface of the flow limiting hole; the flow-limiting orifice or the filtering device is cleaned regularly. These measures are not very reliable, and in particular the electrostatic attraction that occurs when the gaseous medium flows through the narrow passage is unavoidable, which is a great concern in relation to the cleanliness of the medium used in the aircraft, which increases the maintenance costs and reduces the availability of the equipment.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a passive self-cleaning type antifouling flow limiting device, which is more convenient and faster to maintain, even does not need to maintain and has high reliability, so that the defects of the conventional flow limiting device on an airplane are overcome, and the working reliability of an airplane valve is ensured.
In order to achieve the purpose, the invention provides the following technical scheme:
a passive self-cleaning anti-fouling flow-limiting device embedded in a valve member housing and interfacing with a flow passage in a valve member, the device comprising: the device comprises a compression screw 1, a sealing ring 2, a shell 3, a decontamination steel wire 4, an isolation frame 5, a clamping block 6 and a sealing gasket 7;
the sealing ring 2 and the shell 3 are fixed together;
the compression screw 1 compresses the isolation frame 5 and the sealing gasket 7 to form a high-pressure cavity and a low-pressure cavity;
the clamping block 6 is fixed with one end of the decontamination steel wire 4; and the other end of the decontamination steel wire 4 passes through a flow limiting hole in the isolation frame 5.
The technical scheme of the invention has the characteristics and further improvements that:
(1) the sealing ring 2 and the shell 3 are fixed together in a rubber vulcanization mode.
(2) The diameter of the decontamination steel wire 4 is smaller than the aperture of the flow limiting hole in the isolation frame 5.
(3) The device is provided with an air inlet and an air outlet;
the air inlet and the air outlet are respectively in butt joint with two ends of a flow channel in the valve piece.
(4) The air inlet and the air outlet are rotatable about an apparatus axis.
(5) The two sealing rings 2 are respectively fixed with two ends of the shell 3 and used for sealing the shell 3 and a flow passage in the valve member.
(6) After the device is embedded into the valve piece shell, the device is fixed in the valve piece shell by adopting an anti-disengagement part.
(7) The device removes dirt by vibrating the valve element to make the decontamination steel wire 4 move relatively in the flow-limiting hole in the isolation frame 5.
The technical scheme of the invention provides a current limiting device which utilizes the vibration energy of a mechanical system to automatically clean a current limiting structure, and comprises a sealing ring 2 and a shell 3 which are fixed together and butted with a flow channel of a valve in an installation groove of the valve; the isolation frame 5 and the sealing gasket 7 are tightly pressed to form a high-pressure cavity and a low-pressure cavity by pressing the screw 1 in the shell 3, the end C is the high-pressure cavity, and the end B is the low-pressure cavity; the clamping block 6 is fixed with the decontamination steel wire 4; the decontamination steel wire 4 passes through the throttling hole of the isolation frame 5; the invention uses the relative movement of the decontamination steel wire 4 in the orifice of the isolation frame 5 caused by the strong vibration of the aircraft engine to decontaminate.
Drawings
FIG. 1 is a schematic structural diagram of a passive self-cleaning type anti-fouling current-limiting device according to the present invention;
the device comprises a shell, a pressing screw, a sealing ring, a shell, a decontamination steel wire, an isolation frame, a clamping block and a sealing gasket, wherein the pressing screw is 1-the sealing ring is 2-the shell is 3-the decontamination steel wire is 4-the isolation frame is 5-the clamping block is 6-the sealing gasket is 7-the sealing gasket is.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The present invention is described in further detail below. Referring to fig. 1, the passive self-cleaning type anti-fouling current-limiting device of the invention comprises a sealing ring 2 and a shell 3 which are fixed together to form a flow channel with a mounting groove of a valve member; the isolation frame 5 and the sealing gasket 7 are tightly pressed to form a high-pressure cavity and a low-pressure cavity by pressing the screw 1 in the shell 3, the end C is the high-pressure cavity, and the end B is the low-pressure cavity; the clamping block 5 is fixed with the decontamination steel wire 4; the decontamination steel wire 4 passes through the orifice of the isolation block 5; the invention uses the relative movement of the decontamination steel wire 4 in the orifice of the isolation frame 5 caused by the strong vibration of the aircraft engine to decontaminate.
The sealing ring 2 and the shell 3 are fixed together in a rubber vulcanization mode, the protruding amount of the sealing ring is ensured by a vulcanization mold, the consistency of the sealing size of each flow limiting device can be ensured, so that good interchangeability is ensured, the sealing ring is fixed in a vulcanization mode, and the sealing ring cannot fall off from a sealing ring groove of the shell 3 or a rubber ring cannot be cut during assembling and disassembling.
According to different pressure requirements of different valve members on the high-pressure cavity and the low-pressure cavity or different flow requirements of the flow channel, the diameter of the decontamination steel wire 4 and the matching size of the aperture of the flow limiting hole of the isolation frame 5 can be adjusted to realize the decontamination steel wire flow limiting device, so that the device can be easily serialized.
The external dimension of the device can be designed to be smaller according to the requirement, the length can be controlled within 2cm, the device is easy to be embedded in the shell of the valve element, and a cover plate or an anti-falling part is required to be fixed on the shell of the valve element after the device is embedded in the shell of the valve element.
When the valve reaches the overhaul period or the product is in fault maintenance, the fixed part on the valve is dismounted for the component, the device is pulled out, and the shell 3 is provided with an interface butted with a dismounting tool, so that the disassembly is convenient.
The device can utilize a vibration source of an engine on an airplane to realize the purposes of decontamination and reliable flow limitation of a valve flow limiting structure; the device can realize quick assembly and disassembly and reliable sealing with the valve piece; the high-pressure cavity and the low-pressure cavity can be isolated in the device, so that the pressure can be adjusted.
The device can realize real-time decontamination, the inherent frequency difference of decontamination steel wire and isolation frame is great, and relative motion can be realized to the decontamination steel wire under same vibration source in the restricted aperture of isolation frame, makes the decontamination steel wire can be in the stirring of restricted aperture high frequency, reaches the purpose of real-time decontamination.
The device is reliably butted with a flow channel of the valve, and the vulcanized sealing ring on the shell is used for ensuring the sealing of the valve and the integrity of the flow channel.
The isolation frame is compressed on the sealing gasket through the compression screw in the device, so that the isolation of the high-pressure cavity and the low-pressure cavity is realized.
The decontamination steel wire and the holding block can be tightly connected and cannot fall out of the flow limiting hole.
The inlet and outlet of the device can rotate around the axis of the device and properly move in the length direction according to the design requirements of the valve element so as to be butted with a flow passage of the valve element.
The invention utilizes the vibration phenomenon of the aircraft engine to achieve the design purpose, because the vibration of the aircraft engine causes the vibration of all structures in the aircraft including the valve which is the object applied by the invention, and because the natural frequencies of the decontamination steel wire and the isolation frame are different, the vibration amplitudes excited under the same vibration source are different inevitably, so that the high-frequency relative vibration (displacement) of the decontamination steel wire in the throttling hole becomes possible, and the effect of real-time decontamination can be achieved. The device can not make tiny impurity gather in the orifice, can realize that pressure is stable in the low pressure chamber, and the pressure in low pressure chamber can not change because of life's extension, has improved the reliability of device. The inlet and outlet of the device can rotate around the axis of the device at will, and can be adjusted in the length direction as required, so long as the sealing ring can be tightly matched with the flow channel of the valve piece, and the device has strong universality. The device design is independent unit, generally can design the structure of inserting into of valve member outside, dismouting that can be convenient outside the valve member, change the device with the model when the product maintenance can, single can accomplish, avoided the loaded down with trivial details washing dismouting work of traditional throttling arrangement, this makes the device have fine maintainability.
Claims (8)
1. A passive self-cleaning anti-fouling flow-limiting device embedded in a valve member housing and interfacing with a flow passage in a valve member, the device comprising: the device comprises a compression screw (1), a sealing ring (2), a shell (3), a decontamination steel wire (4), an isolation frame (5), a clamping block (6) and a sealing gasket (7);
the sealing ring (2) is fixed with the shell (3);
the compression screw (1) compresses the isolation frame (5) and the sealing gasket (7) to form a high-pressure cavity and a low-pressure cavity;
the clamping block (6) is fixed with one end of the decontamination steel wire (4); and the other end of the decontamination steel wire (4) passes through a flow limiting hole in the isolation frame (5).
2. A passive self-cleaning anti-fouling flow-limiting device according to claim 1, characterized in that the sealing ring (2) and the housing (3) are fixed together by means of rubber vulcanization.
3. A passive self-cleaning anti-fouling flow-limiting device according to claim 1,
the diameter of the decontamination steel wire (4) is smaller than the aperture of the flow limiting hole in the isolation frame (5).
4. A passive self-cleaning anti-fouling flow-limiting device according to claim 1,
the device is provided with an air inlet and an air outlet;
the air inlet and the air outlet are respectively in butt joint with two ends of a flow channel in the valve piece.
5. A passive self-cleaning anti-fouling flow-limiting device according to claim 1,
the air inlet and the air outlet are rotatable about an apparatus axis.
6. A passive self-cleaning anti-fouling flow-limiting device according to claim 1,
the two sealing rings (2) are respectively fixed with two ends of the shell (3) and used for sealing the shell (3) and a flow passage in the valve.
7. A passive self-cleaning anti-fouling flow-limiting device according to claim 1,
after the device is embedded into the valve piece shell, the device is fixed in the valve piece shell by adopting an anti-disengagement part.
8. A passive self-cleaning anti-fouling flow-limiting device according to claim 1, characterized in that the device removes the fouling materials by causing relative movement of the fouling steel wire (4) in the flow-limiting hole in the isolation frame (5) by vibration of the mechanical equipment to which the valve member is mounted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911353717.3A CN111112239B (en) | 2019-12-24 | 2019-12-24 | Passive self-cleaning type antifouling current limiting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911353717.3A CN111112239B (en) | 2019-12-24 | 2019-12-24 | Passive self-cleaning type antifouling current limiting device |
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| CN111112239A true CN111112239A (en) | 2020-05-08 |
| CN111112239B CN111112239B (en) | 2022-08-12 |
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| CN201911353717.3A Active CN111112239B (en) | 2019-12-24 | 2019-12-24 | Passive self-cleaning type antifouling current limiting device |
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Citations (12)
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|---|---|---|---|---|
| US4022380A (en) * | 1973-05-11 | 1977-05-10 | Edgar Peter Scragg | Fluid flow control valve |
| CN101788067A (en) * | 2009-01-22 | 2010-07-28 | 裘苗全 | Self-closed anti-blocking water faucet |
| CN204399827U (en) * | 2014-12-10 | 2015-06-17 | 宝山钢铁股份有限公司 | Dry coke quenching vibra feeder ash discharging anti-blocking device |
| US20150260267A1 (en) * | 2014-03-11 | 2015-09-17 | Tricore Corporation | Anti-jam structure for linear actuator |
| CN205136691U (en) * | 2015-10-28 | 2016-04-06 | 中国石油天然气股份有限公司 | Self-cleaning conical one-way valve |
| CN206487917U (en) * | 2017-01-16 | 2017-09-12 | 浙江达威电子股份有限公司 | The waste water ratio electromagnetic valve of anti-blocking self-cleaning |
| CN206582381U (en) * | 2017-03-17 | 2017-10-24 | 泉州市纵能电磁阀有限公司 | A kind of Delayed self-closing flushing valve |
| CN108561587A (en) * | 2018-07-05 | 2018-09-21 | 青岛毕勤机电有限公司 | Vibrating membrane guide rod, vibrating membrane group and solenoid valve |
| CN208295265U (en) * | 2018-04-20 | 2018-12-28 | 金华市德诺电器有限公司 | A kind of anti-blocking solenoid valve |
| CN109139999A (en) * | 2018-11-07 | 2019-01-04 | 珠海格力电器股份有限公司 | Restriction water yield, anti-scaling choke valve, solenoid valve and purifier |
| CN209638420U (en) * | 2019-03-01 | 2019-11-15 | 浙江美硕电气科技股份有限公司 | A kind of anti-blocking waste water solenoid valve of low pressure water inlet |
| CN209638414U (en) * | 2019-01-28 | 2019-11-15 | 宁波佳音机电科技股份有限公司 | Waste water solenoid valve |
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2019
- 2019-12-24 CN CN201911353717.3A patent/CN111112239B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4022380A (en) * | 1973-05-11 | 1977-05-10 | Edgar Peter Scragg | Fluid flow control valve |
| CN101788067A (en) * | 2009-01-22 | 2010-07-28 | 裘苗全 | Self-closed anti-blocking water faucet |
| US20150260267A1 (en) * | 2014-03-11 | 2015-09-17 | Tricore Corporation | Anti-jam structure for linear actuator |
| CN204399827U (en) * | 2014-12-10 | 2015-06-17 | 宝山钢铁股份有限公司 | Dry coke quenching vibra feeder ash discharging anti-blocking device |
| CN205136691U (en) * | 2015-10-28 | 2016-04-06 | 中国石油天然气股份有限公司 | Self-cleaning conical one-way valve |
| CN206487917U (en) * | 2017-01-16 | 2017-09-12 | 浙江达威电子股份有限公司 | The waste water ratio electromagnetic valve of anti-blocking self-cleaning |
| CN206582381U (en) * | 2017-03-17 | 2017-10-24 | 泉州市纵能电磁阀有限公司 | A kind of Delayed self-closing flushing valve |
| CN208295265U (en) * | 2018-04-20 | 2018-12-28 | 金华市德诺电器有限公司 | A kind of anti-blocking solenoid valve |
| CN108561587A (en) * | 2018-07-05 | 2018-09-21 | 青岛毕勤机电有限公司 | Vibrating membrane guide rod, vibrating membrane group and solenoid valve |
| CN109139999A (en) * | 2018-11-07 | 2019-01-04 | 珠海格力电器股份有限公司 | Restriction water yield, anti-scaling choke valve, solenoid valve and purifier |
| CN209638414U (en) * | 2019-01-28 | 2019-11-15 | 宁波佳音机电科技股份有限公司 | Waste water solenoid valve |
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| CN111112239B (en) | 2022-08-12 |
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