CN206130355U - Aviation fluid pipeline connects - Google Patents

Aviation fluid pipeline connects Download PDF

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Publication number
CN206130355U
CN206130355U CN201621119635.4U CN201621119635U CN206130355U CN 206130355 U CN206130355 U CN 206130355U CN 201621119635 U CN201621119635 U CN 201621119635U CN 206130355 U CN206130355 U CN 206130355U
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China
Prior art keywords
pipeline
joint
sealing
seal groove
nut
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CN201621119635.4U
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Chinese (zh)
Inventor
何志林
孟晓滨
景乾英
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何志林
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Priority to CN201621119635.4U priority Critical patent/CN206130355U/en
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Abstract

The utility model provides an it has the seal groove to process on the fitting surface, will that aviation fluid pipeline connects is connecting and the pipeline the sealing washer inlays the dress in this seal groove. To put down the mouthpiece suit on the outer circumference of pipeline to the interior conical surface that makes this tie mouthpiece one end with pipeline conic section's surface laminating. The one end of nut is passed through the screw suit and is in the outer peripheral surface who connects, another end pressure of nut is in on the outer peripheral surface of flat mouthpiece constant diameter section. The utility model discloses a sealing washer is sealed with the cooperation formation second level of pipeline, has strengthened the sealing performance of structure. Simultaneously under the condition that more tube replacement did not say, connect promptly can the repair system through directly changing, accomplish the maintenance upgrading.

Description

A kind of aerofluid pipe joint
Technical field
The present invention relates to aerofluid pipeline joint structure.
Background technology
At present the standard of 74 degree of flared fitting structure references conventional in hydraulic air pipeline structure is《HB-4-1 expands Mouth pipe connections general specification》.The type of attachment of wherein pipeline and joint is:Using punch die to pipeline is carried out into expanding, It is processed into horn-like, 74 degree of inner conical surfaces of formation;Joint is processed into into 74 to be outside one's consideration the conical surface;By additional nut and flat ozzle, make Apply thrust with helicitic texture, interior male cone (strobilus masculinus) is compressed, so as to form Hermetical connecting structure.
It is using subject matter present in process:In the case where repeating to assemble, pipeline material deformation is more and more difficult. To realize sealing structure, the mounting torque of needs constantly increases, until bearing the limit more than nut, still occurring cannot be completely close The phenomenon of envelope.When this occurs, the method for reparation can only change pipeline.And this kind of restorative procedure is in machine in-vivo procedures It is sufficiently complex.
To improve sealing property and recoverability, prior art is such as《The cone sealing of GB/T3758-2008 ferrule-type compression joints Welding adapter》In a kind of fluid sealing mode for mentioning:Increase sealing ring in cone sealing structure;Sealing ring is arranged on into welding In the groove of cone;Welding cone so-called " male " is connected between pipeline by way of welding.The technology is only applicable to welding Adapter.A kind of existing patent (notification number:CN 205013907U) mention a kind of be related to what aero-engine technology field was mentioned Improved structure:Sealing ring is placed in the groove of inner conical surface so-called " female ".Therefore the patented technology is equally only applicable to inner conical surface The structure that so-called " female " is connected with pipeline welding.
The content of the invention
To overcome the shortcomings of that sealing effectiveness present in prior art is poor, it is difficult to change pipeline, the present invention proposes one kind Aerofluid pipe joint.
The present invention includes nut, pipeline, joint and flat ozzle, and flat ozzle is sleeved on the excircle of pipeline, and makes this The outer surface that the inner conical surface of flat ozzle one end bores section with the pipeline is fitted.One end of nut is by thread set in the joint External peripheral surface, the other end of nut is pressed on the external peripheral surface of isometrical section of the flat ozzle;Characterized in that, also including Sealing ring.Seal groove is machined with the mating surface of joint and pipeline, the sealing ring is inlaid in the seal groove.
The cross section of the seal groove is semicircle or rectangle or triangle or trapezoidal.
The coated with adhesive between the sealing ring and joint, the sealing ring is fixed in seal groove.
For the deficiencies in the prior art, technical scheme is applied to the sealing that inner conical surface is made up of tube wall Structure.In 74 degree of flared fitting references《HB-4-1 enlarging pipe connections general specifications》The basis of original conical surface sealing structure On, increase primary seal structure.In the case where original sealing structure fails, second level sealing structure can realize original sealing Function.
Technical scheme is machined with seal groove in joint male cone (strobilus masculinus), and in the seal groove sealing ring is placed.Pass through The sealing ring cooperatively forms second level sealing with pipeline, enhances the sealing property of structure.The structure of sealing ring is to original First order sealing structure does not produce negative influence.
Compared with prior art, the present invention has advantages below:
1st, double sealing structure, improves the reliability of system sealing;
2nd, when original 74 degree of flared fitting structures go wrong, under conditions of pipeline is changed without, by direct Changing joint can complete maintenance upgrading with repair system.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
1 is nut, and 2 is pipeline, and 3 is sealing ring, and 4 is joint, and 5 is flat ozzle.
Specific embodiment
The present embodiment is a kind of aerofluid pipeline joint structure component, prior art is improved and is obtained.
The present embodiment includes nut 1, pipeline 2, sealing ring 3, joint 4 and flat ozzle 5.
During improvement, seal groove is machined with the mating surface of the joint 4 and pipeline 2, sealing ring 3 is inlaid in into this close In seal groove.The mating surface of the pipeline 2 is fitted with the mating surface of joint.Flat ozzle 5 is sleeved on the excircle of pipeline 2, And make the outer surface that the inner conical surface of the flat ozzle one end bores section with the pipeline fit.One end of nut 1 is existed by thread set The external peripheral surface of the joint 4, the other end of nut is pressed on the external peripheral surface of isometrical section of the flat ozzle, so as to connect Head is connected with pipeline.
Described pipeline 2, nut 1 and flat ozzle 5 are prior art.
The cross section of the seal groove, according to the characteristic of sealing ring, can be semicircle or rectangle or triangle or trapezoidal. In the present embodiment, sealing ring 3 is rubber "O"-ring.
To prevent sealing ring 3 from slipping from joint 4, the coated with adhesive between sealing ring 3 and joint 4, by the sealing ring It is fixed in seal groove.
In the present embodiment, the conical surface between pipeline 2 and joint 4 forms first order sealing surface.Sealing ring 3 is arranged on joint 4 Seal groove in, by the sealing ring 3 formed between pipeline 2 and joint 4 second level sealing.
When first order sealing surface because repeating to assemble and deformation is more difficult, when causing seal failure, by sealing cast Into the second level sealing can play a part of sealing.
When the joint of prior art is leaked, prior art is replaced to connect using the joint 4 and sealing ring 3 of the present embodiment Head, without replacing pipeline 2, nut 1 and flat ozzle 5, you can repair structure, realize the sealing of pipe joint.

Claims (3)

1. a kind of aerofluid pipe joint, including nut, pipeline, joint and flat ozzle, by flat ozzle the outer of pipeline is sleeved on On circumference, and the outer surface that the inner conical surface of the flat ozzle one end bores section with the pipeline is set to fit;One end of nut passes through screw thread The external peripheral surface of the joint is sleeved on, the other end of nut is pressed on the external peripheral surface of isometrical section of the flat ozzle;Its It is characterised by, also including sealing ring;Seal groove is machined with the mating surface of joint and pipeline, the sealing ring is inlaid in In the seal groove.
2. aerofluid pipe joint as claimed in claim 1, it is characterised in that the cross section of the seal groove is semicircle Or rectangle or triangle or trapezoidal.
3. aerofluid pipe joint as claimed in claim 1, it is characterised in that coat between the sealing ring and joint viscous Knot agent, the sealing ring is fixed in seal groove.
CN201621119635.4U 2016-10-13 2016-10-13 Aviation fluid pipeline connects Active CN206130355U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621119635.4U CN206130355U (en) 2016-10-13 2016-10-13 Aviation fluid pipeline connects

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621119635.4U CN206130355U (en) 2016-10-13 2016-10-13 Aviation fluid pipeline connects

Publications (1)

Publication Number Publication Date
CN206130355U true CN206130355U (en) 2017-04-26

Family

ID=58574660

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201621119635.4U Active CN206130355U (en) 2016-10-13 2016-10-13 Aviation fluid pipeline connects

Country Status (1)

Country Link
CN (1) CN206130355U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109084102A (en) * 2017-06-14 2018-12-25 班博鲁工贸有限公司 A kind of assembling pipe joint
WO2019042269A1 (en) * 2017-08-28 2019-03-07 艾默生环境优化技术(苏州)有限公司 Sealed connection structure, functional component, thermal expansion valve, and system
CN111350890A (en) * 2018-12-20 2020-06-30 中核北方核燃料元件有限公司 Device and method for hydraulic blasting detection of annular fuel assembly guide pipe
CN111351714A (en) * 2018-12-20 2020-06-30 中核北方核燃料元件有限公司 Device and method for hydraulic blasting detection of annular fuel assembly buffer tube

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109084102A (en) * 2017-06-14 2018-12-25 班博鲁工贸有限公司 A kind of assembling pipe joint
WO2019042269A1 (en) * 2017-08-28 2019-03-07 艾默生环境优化技术(苏州)有限公司 Sealed connection structure, functional component, thermal expansion valve, and system
CN111350890A (en) * 2018-12-20 2020-06-30 中核北方核燃料元件有限公司 Device and method for hydraulic blasting detection of annular fuel assembly guide pipe
CN111351714A (en) * 2018-12-20 2020-06-30 中核北方核燃料元件有限公司 Device and method for hydraulic blasting detection of annular fuel assembly buffer tube

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