CN107763335A - A kind of joint ferrule assemblies - Google Patents

A kind of joint ferrule assemblies Download PDF

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Publication number
CN107763335A
CN107763335A CN201610684597.5A CN201610684597A CN107763335A CN 107763335 A CN107763335 A CN 107763335A CN 201610684597 A CN201610684597 A CN 201610684597A CN 107763335 A CN107763335 A CN 107763335A
Authority
CN
China
Prior art keywords
oil pipe
hydraulic oil
sealing
sealing area
joint
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Withdrawn
Application number
CN201610684597.5A
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Chinese (zh)
Inventor
郭强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201610684597.5A priority Critical patent/CN107763335A/en
Publication of CN107763335A publication Critical patent/CN107763335A/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
    • F16L19/0218—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means comprising only sealing rings
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/06—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends
    • F16L19/07—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends adapted for use in socket or sleeve connections

Abstract

The invention discloses a kind of joint ferrule assemblies, including joint body, hydraulic oil pipe and nut, joint body is set on hydraulic oil pipe, inner conical surface interface is provided with the connection end of joint body and hydraulic oil pipe, loose slot is provided with one end of joint body described in nut face, cutting ferrule is arranged in loose slot and its inwall is bonded with hydraulic oil pipe outer circle wall, cutting ferrule is made up of buffer part and sealing, axis direction of the sealing along cutting ferrule is towards extending in inner conical surface interface, annular space between primary sealing area and secondary sealing area and hydraulic oil pipe.Primary sealing area is brought into close contact with hydraulic oil pipe outer circle wall, annular space is kept between secondary sealing area and hydraulic oil pipe outer circle wall, the inwall of sealing body is brought into close contact with hydraulic oil pipe outer circle wall, and side wall of the arc enlarged portion on the side wall of buffer part and its outer wall respectively with loose slot is brought into close contact, ensure air-tightness of the ferrule assemblies under high-temperature and high-pressure conditions.

Description

A kind of joint ferrule assemblies
Technical field
The present invention relates to a kind of hydraulic tube, in particular to a kind of joint ferrule assemblies.
Background technology
Traditional hydraulic pipe joint sleeve only has a sealing cutting edge in structure, belongs to metal contact seal, its function It is in oil pipe and pipe joint assembly connection, tightening nuts, by the extruding of the hydraulic fitting body taper hole conical surface, connects hydraulic tube The cutting edge incision oil pipe top layer of head cutting ferrule reaches metal contact seal, if tightening nuts overexertion, may result in hydraulic tube and connects Excessively incision damages oil pipe to head cutting ferrule cutting edge, causes hydraulic pipe joint sleeve to rupture；And traditional hydraulic pipe joint sleeve institute The operating pressure that can be born is no more than 40Mpa, and hydraulic pipe joint sleeve break accident may occur after exceeding.
Traditional hydraulic pipe joint sleeve in impulsive force and higher oscillation intensity and temperature be up to more than 100 DEG C and Vibration frequency in more than 60Mpa and acidity, mine working environment, easily deforms in more than 40Hz, pressure, ftractures and occur Leakage, service life are short, it is impossible to reach high-end hydraulic fitting pressure in more than 60Mpa, acidity, mine, temperature at 100 DEG C Above and the job requirement that is used in more than 40Hz harsh and unforgiving environments of vibration frequency.
The content of the invention
It is an object of the invention to provide a kind of joint ferrule assemblies, improve the sealing being fastened under high temperature, condition of high voltage Property or reliability, avoid being fastened in rupture under heavy duty and adverse circumstances, leakage.
The purpose of the present invention is achieved through the following technical solutions：
A kind of joint ferrule assemblies, including joint body, hydraulic oil pipe and the nut coordinated with hydraulic oil pipe screw thread, joint sheet Body is set on hydraulic oil pipe, inner conical surface interface is provided with the connection end of the joint body and hydraulic oil pipe, in nut face One end of the joint body is provided with loose slot, and cutting ferrule is arranged in loose slot and its inwall pastes with hydraulic oil pipe outer circle wall Close, the cutting ferrule is made up of buffer part and sealing, and the buffer part is eyelet, and the outer circle wall of buffer part is provided with Radially outstanding and section is the enlarged portion of arc, and the arc top of enlarged portion contacts with loose slot upper wall, the sealing Be connected with buffer part side wall and along the axis direction of cutting ferrule towards inner conical surface interface in extend, the elongated end outer wall of the sealing with Inner conical surface interface inwall is adapted, and the elongated end inwall of sealing is provided with primary sealing area and secondary sealing area, sealing sheet The inwall of body is bonded with hydraulic oil pipe, annular space between primary sealing area and secondary sealing area and hydraulic oil pipe, and primary sealing area Longitudinal cross-section be horizontal plane, the longitudinal cross-section of secondary sealing area is the curved surface being radially outward recessed along cutting ferrule.
During present invention work, regulating nut is allowed to move towards close to the direction of joint body along the axis direction of hydraulic oil pipe Dynamic, when the side wall of loose slot contacts with the side wall of buffer part, nut movement can directly drive and be fastened in the cylindrical of hydraulic oil pipe Moved on perisporium, now the elongated end of sealing is initially entered in inner conical surface interface, and keep the outer wall of elongated end with it is interior Conical surface interface inwall is engaged, due to annular space between primary sealing area and secondary sealing area and hydraulic oil pipe outer circle wall, and Two sealing surfaces are the curved surface being radially outward recessed along cutting ferrule, and the curved surface active force that its own is subject to after extruding can inwardly expand , while the deformation that the elongated end of sealing can be moved in moving process so that primary sealing area and hydraulic oil pipe Outer circle wall is bonded completely, and then is realized and held hydraulic oil pipe tightly；When the elongated end of sealing is moved to its extreme position, cutting ferrule with The mated condition of hydraulic oil pipe is that primary sealing area is brought into close contact with hydraulic oil pipe outer circle wall, secondary sealing area and hydraulic oil Annular space is kept between pipe outer circle wall, inwall and the hydraulic oil pipe outer circle wall of sealing body are brought into close contact, and buffer part Side wall of the arc enlarged portion respectively with loose slot in side wall and its outer wall is brought into close contact, that is, realizes cutting ferrule, joint body And being fully sealed between nut three, ensure air-tightness of the joint ferrule assemblies under high-temperature and high-pressure conditions, avoid cutting ferrule Rupture, leakage under heavy duty and adverse circumstances.Wherein, buffer part is eyelet so that can when being extruded by nut A certain amount of deformation is produced, while the enlarged portion of its arc is extruded into and contacted with loose slot upper wall, and the lower end of buffer part is then Contacted with hydraulic oil pipe, can not only increase the buffering effect impacted during nut movement to sealing, avoid the extension of sealing It is excessively mobile impaired, moreover it is possible to further to improve the seal between cutting ferrule, joint body and nut three.
Also include sealing ring, the sealing ring is arranged in the annular space of secondary sealing area and hydraulic oil pipe.In sealing During elongated end stress, applied stress inward expansion that secondary sealing area is subject to, and then realize primary sealing area and sealing sheet Holding between body bottom surface and hydraulic oil pipe, while sealing ring is installed in the annular space of secondary sealing area and hydraulic oil pipe, utilize The elastic deformation ability of sealing ring can prevent secondary sealing area from excessive compressional deformation is occurring, to ensure joint ferrule assemblies Job stability.
The taper of the inner conical surface interface is 0.1 ~ 0.2.Preferably, the taper of inner conical surface interface is arranged to 0.1 ~ 0.2, ensure that the elongated end of sealing enters in inner conical surface interface within a short period of time, while ensure primary sealing area and hydraulic pressure Possess enough contact surfaces between oil pipe outer circle wall to realize the maximum sealing effectiveness in the first sealing stage.
The present invention compared with prior art, has the following advantages and advantages：
1st, buffer part of the invention is eyelet so that a certain amount of deformation can be produced when being extruded by nut, together When its arc enlarged portion be extruded into and contacted with loose slot upper wall, and the lower end of buffer part then contacts with hydraulic oil pipe, not only The buffering effect impacted during nut movement to sealing can be increased, avoid the extension of sealing excessively mobile impaired, moreover it is possible to enter One step improves the seal between cutting ferrule, joint body and nut three；
2nd, the applied stress inward expansion of the invention that in the elongated end stress of sealing, secondary sealing area is subject to, and then realize Holding between primary sealing area and sealing body bottom surface and hydraulic oil pipe, while in secondary sealing area and hydraulic oil pipe Installation sealing ring in annular space, it can prevent secondary sealing area from excessive extruding shape is occurring using the elastic deformation ability of sealing ring Become, to ensure the job stability of joint ferrule assemblies；
3rd, the taper of inner conical surface interface is arranged to 0.1 ~ 0.2 by the present invention, ensures that the elongated end of sealing enters within a short period of time Enter into inner conical surface interface, while ensure to possess between primary sealing area and hydraulic oil pipe outer circle wall enough contact surfaces with reality The maximum sealing effectiveness in existing first sealing stage.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, forms one of the application Point, do not form the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is the structural representation of the present invention；
Mark and corresponding parts title in accompanying drawing：
1- joint bodies, 2- hydraulic oil pipes, 3- inner conical surfaces interface, 4- sealings, 5- sealing rings, 6- buffer parts, 7- nuts, 8- One sealing surface, 9- secondary sealing areas, 10- loose slots.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make For limitation of the invention.
Embodiment 1
As shown in figure 1, the present embodiment includes joint body 1, hydraulic oil pipe 2 and the nut 7 coordinated with the screw thread of hydraulic oil pipe 2, Joint body 1 is set on hydraulic oil pipe 2, and inner conical surface interface 3 is provided with the connection end of the joint body 1 and hydraulic oil pipe 2, Loose slot 10 is provided with one end of joint body 1 described in the face of nut 7, cutting ferrule is arranged in loose slot 10 and its inwall and hydraulic pressure The outer circle wall of oil pipe 2 is bonded, and the cutting ferrule is made up of buffer part 6 and sealing 4, and the buffer part 6 is eyelet, buffering The outer circle wall in portion 6 is provided with the enlarged portion that radially outstanding and section is arc, the arc top of enlarged portion and loose slot 10 upper walls contact, and the sealing 4 is connected with the side wall of buffer part 6 and extended along the axis direction of cutting ferrule towards inner conical surface interface 3 is interior, The elongated end outer wall of the sealing 4 is adapted with the inwall of inner conical surface interface 3, and the elongated end inwall of sealing 4 is provided with first Sealing surface 8 and secondary sealing area 9, the inwall of the body of sealing 4 are bonded with hydraulic oil pipe 2, primary sealing area 8 and secondary sealing area Annular space between 9 and hydraulic oil pipe 2, and the longitudinal cross-section of primary sealing area 8 is horizontal plane, the longitudinal cross-section of secondary sealing area 9 is The curved surface being radially outward recessed along cutting ferrule.
During work, regulating nut is allowed to move towards the direction close to joint body 1 along the axis direction of hydraulic oil pipe 2, when When the side wall of loose slot 10 contacts with the side wall of buffer part 6, the movement of nut 7 can directly drive and be fastened in the cylindrical of hydraulic oil pipe 2 Moved on perisporium, now the elongated end of sealing 4 is initially entered in inner conical surface interface 3, and keep the outer wall of elongated end with The inwall of inner conical surface interface 3 is engaged, due to ring between primary sealing area 8 and secondary sealing area 9 and the outer circle wall of hydraulic oil pipe 2 Sky, and secondary sealing area 9 is the curved surface that is radially outward recessed along cutting ferrule, the curved surface active force that its own is subject to after extruding Can inward expansion, while the deformation that the elongated end of sealing 4 can be moved in moving process so that primary sealing area 8 with The outer circle wall of hydraulic oil pipe 2 is bonded completely, and then is realized and held hydraulic oil pipe 2 tightly；When the elongated end of sealing 4 is moved to its pole Extreme position, the mated condition of cutting ferrule and hydraulic oil pipe 2 are that primary sealing area 8 is brought into close contact with the outer circle wall of hydraulic oil pipe 2, the Annular space, inwall and the outer circle wall of hydraulic oil pipe 2 of the body of sealing 4 are kept between two sealing surfaces 9 and the outer circle wall of hydraulic oil pipe 2 It is brought into close contact, and side wall of the arc enlarged portion on the side wall of buffer part 6 and its outer wall respectively with loose slot 10 is brought into close contact, Being fully sealed between cutting ferrule, joint body 1 and the three of nut 7 is realized, ensures joint ferrule assemblies in HTHP Under the conditions of air-tightness, avoid being fastened in rupture under heavy duty and adverse circumstances, leakage.Wherein, buffer part 6 is eyelet, So that a certain amount of deformation can be produced when being extruded by nut, while the enlarged portion of its arc is extruded into and loose slot 10 Upper wall contacts, and the lower end of buffer part 6 then contacts with hydraulic oil pipe 2, can not only increase sealing 4 is impacted during nut movement Buffering effect, avoid the extension of sealing 4 excessively mobile impaired, moreover it is possible to further to improve cutting ferrule, joint body 1 and nut Seal between 7 threes.
In the elongated end stress of sealing 4, applied stress inward expansion that secondary sealing area 9 is subject to, and then realize Holding between one sealing surface 8 and the body bottom surface of sealing 4 and hydraulic oil pipe 2, while in secondary sealing area 9 and hydraulic oil pipe Installation sealing ring 5 in 2 annular space, it can prevent secondary sealing area 9 from excessive squeeze is occurring using the elastic deformation ability of sealing ring 5 Swaging becomes, to ensure the job stability of joint ferrule assemblies.
Preferably, the taper of inner conical surface interface 3 is arranged into 0.1 ~ 0.2, ensure the elongated end of sealing 4 when shorter In enter in inner conical surface interface 3, while ensure to possess between primary sealing area 8 and the outer circle wall of hydraulic oil pipe 2 enough Contact surface is to realize the maximum sealing effectiveness in the first sealing stage.
Above-described embodiment, the purpose of the present invention, technical scheme and beneficial effect are carried out further Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., all should include Within protection scope of the present invention.

Claims (3)

1. a kind of joint ferrule assemblies, including joint body（1）, hydraulic oil pipe（2）And and hydraulic oil pipe（2）What screw thread coordinated Nut（7）, joint body（1）It is set in hydraulic oil pipe（2）On, it is characterised in that：In the joint body（1）With hydraulic oil pipe （2）Connection end be provided with inner conical surface interface（3）, in nut（7）Joint body described in face（1）One end be provided with loose slot （10）, cutting ferrule is arranged on loose slot（10）Interior and its inwall is bonded with hydraulic oil pipe outer circle wall, and the cutting ferrule is by buffer part（6） And sealing（4）Composition, the buffer part（6）For eyelet, buffer part（6）Outer circle wall be provided with radially to Outer protrusion and section are the enlarged portion of arc, the arc top of enlarged portion and loose slot（10）Upper wall contacts, the sealing（4）With delaying Rush portion（6）Side wall connects and along the axis direction of cutting ferrule towards inner conical surface interface（3）Interior extension, the sealing（4）Elongated end Outer wall and inner conical surface interface（3）Inwall is adapted, sealing（4）Elongated end inwall be provided with primary sealing area（8）With second Sealing surface（9）, sealing（4）The inwall and hydraulic oil pipe of body（2）Fitting, primary sealing area（8）With secondary sealing area（9）With Hydraulic oil pipe（2）Between annular space, and primary sealing area（8）Longitudinal cross-section be horizontal plane, secondary sealing area（9）Longitudinal cross-section For the curved surface being radially outward recessed along cutting ferrule.
A kind of 2. joint ferrule assemblies according to claim 1, it is characterised in that：Also include sealing ring（5）, the sealing Circle（5）Installed in secondary sealing area（9）With hydraulic oil pipe（2）Annular space in.
A kind of 3. joint ferrule assemblies according to claim 1, it is characterised in that：The inner conical surface interface（3）Taper For 0.1 ~ 0.2.
CN201610684597.5A 2016-08-18 2016-08-18 A kind of joint ferrule assemblies Withdrawn CN107763335A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610684597.5A CN107763335A (en) 2016-08-18 2016-08-18 A kind of joint ferrule assemblies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610684597.5A CN107763335A (en) 2016-08-18 2016-08-18 A kind of joint ferrule assemblies

Publications (1)

Publication Number Publication Date
CN107763335A true CN107763335A (en) 2018-03-06

Family

ID=61262870

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610684597.5A Withdrawn CN107763335A (en) 2016-08-18 2016-08-18 A kind of joint ferrule assemblies

Country Status (1)

Country Link
CN (1) CN107763335A (en)

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WW01 Invention patent application withdrawn after publication
WW01 Invention patent application withdrawn after publication

Application publication date: 20180306