CN204300386U - Water takeoff and landing aircraft watertight compartment drain valve - Google Patents
Water takeoff and landing aircraft watertight compartment drain valve Download PDFInfo
- Publication number
- CN204300386U CN204300386U CN201420633437.4U CN201420633437U CN204300386U CN 204300386 U CN204300386 U CN 204300386U CN 201420633437 U CN201420633437 U CN 201420633437U CN 204300386 U CN204300386 U CN 204300386U
- Authority
- CN
- China
- Prior art keywords
- swivel nut
- plug screw
- hole
- seal ring
- hat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model patent relates to a water takeoff and landing aircraft watertight compartment drain valve, and this drain valve is made up of swivel nut, plug screw and seal ring.Described swivel nut is shape for hat, and the brim of a hat side is provided with a male flange, is provided with cylindrical hole and interior threaded hole inside shape for hat, and shape for hat district is uniformly distributed along the circumference four slotted holes, and in cutting off, border screw thread is four sections, and crown portion is provided with a small through hole and an inner spacing end face.Described plug screw one end external cylindrical surface is provided with square annular groove, and establishes blind square hole in this nose circle face; Middle part is provided with outside thread; The other end circle of position Transverse plane.Place seal ring in the square annular groove of described plug screw, coordinate with the cylindrical hole of swivel nut.The outside thread of described plug screw coordinates with the interior threaded hole of swivel nut, the nose circle plane of plug screw and the spacing end contact in inside of swivel nut spacing.Four slotted holes of described swivel nut and top small through hole are all drainage channels.The male flange of described swivel nut is the fixed bearing be connected with housing construction hull bottom wallboard, and they are fixedly connected with by circle (general 8) fastening piece.The blind square hole of described plug screw is the square toes instrument fixed hole of handling.
Description
Technical field
The utility model patent relates to water takeoff and landing aircraft watertight compartment drain valve.Especially adopt straight screw connection and the sealing of Axial and radial compression fit, Axial and radial compression fit increases frictional force, makes it bear the larger bump stroke of landing and vibration.
Background technique
Water takeoff and landing aircraft housing construction is provided with some watertight compartments and necessary water-stop, although have employed watertight technology and technique in airplane design and manufacture, but with using the change of duration and Environmental Conditions condition (as temperature), still can generate condensed water or having a small amount of water infiltrate from the external world and cause sealed compartment section water to be assembled.Therefore, generally drain valve is set at watertight compartment minimum position.And existing drain valve mainly relies on screw threads for fastening to connect press seal circle to ensure sealing, for straight thread, along with the vibration of airplane motion, the sealing effect after loosening that is threaded declines; For tapered thread, its working life is short, again can not the longevity same with body.
Summary of the invention
For the deficiencies in the prior art, the technical problem that the utility model patent will solve changes drain valve seal ring seal form on the basis adopting straight screw connection to fix, radial compaction fitted seal is changed into by axial compression fitted seal, thus do not affect sealing effect because screw thread slightly loosens, ensure and the body same longevity again.
The utility model patent solves the technological scheme that its technical problem adopts: drain valve is made up of swivel nut, plug screw and seal ring.Described swivel nut and aircraft body structure adopt mechanical connection manner to fix, and are connected between described swivel nut and plug screw by screw threads for fastening, and described seal ring is arranged between swivel nut and plug screw, and seal ring resiliently deformable produces appropriate value of interference fit, ensure sealing.Described swivel nut is shape for hat, and the brim of a hat side is provided with a male flange, is provided with cylindrical hole and interior threaded hole inside shape for hat, and shape for hat district is uniformly distributed along the circumference four slotted holes, and in cutting off, border screw thread is four sections, and crown portion is provided with a small through hole and an inner spacing end face.Described plug screw one end external cylindrical surface is provided with square annular groove, and establishes blind square hole in this nose circle face; Middle part is provided with outside thread; The other end circle of position Transverse plane.Place seal ring in the square annular groove of described plug screw, coordinate with the cylindrical hole of swivel nut.Described seal ring adopts navigation mark standard piece HB4-56J2-18H, is applicable to movable sealing and the fixing seal of linear reciprocating motion.The outside thread of described plug screw coordinates with the interior threaded hole of swivel nut, the nose circle plane of plug screw and the spacing end contact in inside of swivel nut spacing.Four slotted holes of described swivel nut and top small through hole are all drainage channels.The male flange of described swivel nut is the fixed bearing be connected with housing construction hull bottom wallboard, and they are fixedly connected with by circle (general 8) fastening piece.The blind square hole of described plug screw is the square toes instrument fixed hole of handling.
As the improvement to the utility model art solutions, can be applicable to the body linkage structure of different-thickness.Keep described swivel nut and described plug screw connecting thread length constant, adjust described swivel nut and described plug screw length of thread engagement size.If the housing construction thickness increase that drain valve is installed is enough large, can separately sets up the square annular groove of a circle on described plug screw and increase a described seal ring.
The beneficial effect of the utility model patent is, utilize radial compression seal ring between swivel nut and plug screw, thus do not rely on screw thread impacting force to ensure sealing, simultaneously the seal ring of radial compression can also prevent thread looseness, thus solve aircraft fuselage structure intake on a small quantity after drainage problem.
Accompanying drawing explanation
Fig. 1 is the assembly structure schematic diagram of the utility model patent water takeoff and landing aircraft watertight compartment drain valve;
Fig. 2 is the side direction view of Fig. 1;
Fig. 3 is swivel nut part schematic diagram;
Fig. 4 is plug screw part schematic diagram.
In figure, 1 is swivel nut; 2 is plug screw;
3 is seal ring; H is the adjustable size relevant with the housing construction thickness connected;
11 rivet holes connected for swivel nut; 12 is drainage channel slotted hole;
13 is internal thread; 14 is the spacing end face of plug screw;
15 is top through hole; 16 are and faying surface in seal ring and plug screw;
17 is coordinate faying surface with housing construction; 21 is seal ring mounting groove;
22 is outside thread; 23 for coordinating location end face;
24 for installing by interior cubic blind hole.
Embodiment
The embodiment of the utility model patent is further illustrated below in conjunction with accompanying drawing.
Refer to shown in Fig. 1, Fig. 2 and Fig. 3, the utility model patent water takeoff and landing aircraft watertight compartment drain valve comprises swivel nut 1, plug screw 2 and seal ring 3.The male flange face 17 of described swivel nut 1 contacts with housing construction face, and passing hole 11 and housing construction are riveted fixing; Described plug screw 2 uses special tool to utilize interior square blind hole 24 to be mounted in swivel nut 1; The internal thread 13 of described swivel nut 1 and the outside thread 22 of plug screw 2 coordinate, and when the end face 23 of plug screw 2 contacts with the interior edge face 14 of swivel nut 1, cooperation puts in place; Described seal ring 3 is placed in the groove 21 of plug screw 2, and when plug screw 2 and swivel nut 1 assemble, seal ring 3 fits tightly with the inner face 16 of swivel nut 1; Water can be discharged by four slotted holes 12 of described swivel nut 1 and end through hole 15 under drain valve open mode.
The adjustment mode of the utility model patent water takeoff and landing aircraft watertight compartment drain valve is: when the housing construction thickness that drain valve is installed changes, can the h size of corresponding adjustment swivel nut 1; The length of corresponding increase fitting surface 16; Interior cubic blind hole 24 degree of depth of corresponding lengthening plug screw 2, and the distance keeping seal ring 3 mounting groove 21 and end face 23.When the housing construction thickness increase that drain valve is installed is enough large, a circle seal ring 3 and mounting characteristic structure 21 thereof can be set up.
The above disclosed example being only the utility model patent, can not once limit the utility model patent interest field, therefore according to the equivalent variations that the utility model Patent Applications scope is done, the scope that the utility model patent contains still is belonged to.
Claims (2)
1. water takeoff and landing aircraft watertight compartment drain valve, comprise swivel nut, plug screw and seal ring, described swivel nut and aircraft body structure adopt mechanical connection manner to fix, connected by screw threads for fastening between described swivel nut and plug screw, described seal ring is arranged between swivel nut and plug screw, described seal ring resiliently deformable produces appropriate value of interference fit, ensure sealing, it is characterized in that: described swivel nut is shape for hat, the brim of a hat side is provided with a male flange, cylindrical hole and interior threaded hole is provided with inside shape for hat, shape for hat district is uniformly distributed along the circumference four slotted holes, in cutting off, border screw thread is four sections, crown portion is provided with a small through hole and an inner spacing end face, described plug screw one end external cylindrical surface is provided with square annular groove, and establishes blind square hole in this nose circle face, and middle part is provided with outside thread, the other end circle of position Transverse plane, place seal ring in the square annular groove of described plug screw, coordinate with the cylindrical hole of swivel nut, described seal ring adopts navigation mark standard piece HB4-56J2-18H, is applicable to movable sealing and the fixing seal of linear reciprocating motion, the outside thread of described plug screw coordinates with the interior threaded hole of swivel nut, the nose circle plane of plug screw and the spacing end contact in inside of swivel nut spacing, four slotted holes of described swivel nut and top small through hole are all drainage channels, the male flange of described swivel nut is the fixed bearing be connected with housing construction hull bottom wallboard, and they are fixedly connected with by a circle fastening piece, the blind square hole of described plug screw is the square toes instrument fixed hole of handling.
2. water takeoff and landing aircraft watertight compartment drain valve according to claim 1, it is characterized in that: the male flange end face distance h of swivel nut can change according to connected housing construction hull bottom wall panel thickness and adjust, and also can set up a circle seal groove on plug screw accordingly and increase seal ring quantity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420633437.4U CN204300386U (en) | 2014-10-28 | 2014-10-28 | Water takeoff and landing aircraft watertight compartment drain valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420633437.4U CN204300386U (en) | 2014-10-28 | 2014-10-28 | Water takeoff and landing aircraft watertight compartment drain valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204300386U true CN204300386U (en) | 2015-04-29 |
Family
ID=53105927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420633437.4U Withdrawn - After Issue CN204300386U (en) | 2014-10-28 | 2014-10-28 | Water takeoff and landing aircraft watertight compartment drain valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204300386U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626875A (en) * | 2014-10-28 | 2016-06-01 | 中航通飞研究院有限公司 | Drain valve for watertight compartment of water take-off and landing plane |
| CN107269661A (en) * | 2017-08-01 | 2017-10-20 | 上海亦聚塑胶科技有限公司 | A kind of new type nut component applied to closed drum |
| CN109611421A (en) * | 2018-12-28 | 2019-04-12 | 成都建工工业设备安装有限公司 | A kind of orifice plate as stress connector |
| CN111022468A (en) * | 2019-11-22 | 2020-04-17 | 陕西北方动力有限责任公司 | Novel threaded bushing for diesel engine and mounting method thereof |
-
2014
- 2014-10-28 CN CN201420633437.4U patent/CN204300386U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626875A (en) * | 2014-10-28 | 2016-06-01 | 中航通飞研究院有限公司 | Drain valve for watertight compartment of water take-off and landing plane |
| CN105626875B (en) * | 2014-10-28 | 2018-07-03 | 中航通飞研究院有限公司 | Water takeoff and landing aircraft watertight compartment drain valve |
| CN107269661A (en) * | 2017-08-01 | 2017-10-20 | 上海亦聚塑胶科技有限公司 | A kind of new type nut component applied to closed drum |
| CN109611421A (en) * | 2018-12-28 | 2019-04-12 | 成都建工工业设备安装有限公司 | A kind of orifice plate as stress connector |
| CN111022468A (en) * | 2019-11-22 | 2020-04-17 | 陕西北方动力有限责任公司 | Novel threaded bushing for diesel engine and mounting method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150429 Effective date of abandoning: 20180703 |
|
| AV01 | Patent right actively abandoned |