CN103591402A - Novel two-ferrule tube fitting - Google Patents

Novel two-ferrule tube fitting Download PDF

Info

Publication number
CN103591402A
CN103591402A CN201310593161.1A CN201310593161A CN103591402A CN 103591402 A CN103591402 A CN 103591402A CN 201310593161 A CN201310593161 A CN 201310593161A CN 103591402 A CN103591402 A CN 103591402A
Authority
CN
China
Prior art keywords
cutting ferrule
ferrules
nuts
nut
angle
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.)
Pending
Application number
CN201310593161.1A
Other languages
Chinese (zh)
Inventor
朱义芳
张逢利
陆纪宏
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.)
Jiangsu Xinghe Valve Co Ltd
Original Assignee
Jiangsu Xinghe Valve Co Ltd
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 Jiangsu Xinghe Valve Co Ltd filed Critical Jiangsu Xinghe Valve Co Ltd
Priority to CN201310593161.1A priority Critical patent/CN103591402A/en
Publication of CN103591402A publication Critical patent/CN103591402A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00Joints 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
    • F16L19/08Joints 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 with metal rings which bite into the wall of the pipe
    • F16L19/10Joints 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 with metal rings which bite into the wall of the pipe the profile of the ring being altered
    • F16L19/103Joints 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 with metal rings which bite into the wall of the pipe the profile of the ring being altered with more than one ring per pipe end being used

Abstract

The invention provides a novel two-ferrule tube fitting which is formed by a fitting body, nuts, front ferrules and rear ferrules. The novel two-ferrule tube fitting is characterized in that the front ends of the front ferrules are matched with horn mouths of the fitting body, and the front ends of the rear ferrules make contact with the inner arc surfaces of the rear ends of the front ferrules. The nuts are screwed onto the fitting body, so that included angles are formed between the oblique planes at the bottommost portions of the nuts and the perpendicular surfaces of the rear ends of the rear ferrules. Tubes are inserted in from the tails of the nuts and abut against inner steps of the fitting body. When the nuts are screwed tightly, the nuts propel the front ferrules, enable the front ends of the front ferrules to shrink under the action of the horn mouths of the fitting body and enable the tubes to be pressed in, and then the first seal and the first tightening function are achieved. When the nuts are continuously fastened, the force exerted on the rear ferrules is increased, the arc surfaces of the front ends of the nuts and the inner arc surfaces of the rear ends of the rear ferrules are extruded to shrink, the included angles between the oblique planes at the bottommost portions of the nuts and the perpendicular surfaces of the rear ends of the rear ferrules are gradually eliminated to produce lever acting force and enable the front ends of the rear ferrules to be clamped into the tube better, and then the second seal and the second tightening function are achieved. Connecting strength and sealing performance are more reliable.

Description

Novel double card sleeve type pipe joint
Technical field
The present invention relates to connection between circular pipe, withstand voltage, sealing, design and manufacture, be widely used in the pipelines such as industry, machinery, engineering equipment.。
Background technique
At present, the metallic conduit Placement of extensive use has the pipe joints such as thread type, welding type, flared type, FERRULETYPE, according to different working condition requirements and condition, adopts different Connecting format and joint.But in industrialization, intensive today that has development, due to advantages such as Bite type fittings have connection, good seal, and fitting operation is convenient and swift, its application area and usage quantity constantly increase, and also have higher requirement.If original double card sleeve type pipe joint is to the having relatively high expectations of pipe precision and hardness, the unfavorable factor such as mounting technique is strong, and required mounting torque is larger, has affected wider popularization and application.
Summary of the invention
Novel double card sleeve type pipe joint has changed geometrical shape and the working principle of former front cutting ferrule and rear cutting ferrule, and join strength and sealability are more reliable, and mounting torque is little, is specially adapted in the connection of the stainless steel pipeline that hardness and toughness are higher.
Technological scheme of the present invention is:
1, a kind of novel double card sleeve type pipe joint, by fittings body, nut, front cutting ferrule, rear cutting ferrule, formed, it is characterized in that: the front end of front cutting ferrule coordinates with fittings body horn mouth, the front end of rear cutting ferrule contacts with the rear end inner arc surface of front cutting ferrule, and nut screws in fittings body makes the bottommost inclined-plane of nut and the rear end vertical surface of rear cutting ferrule form angle a; The pipe that needs are connected inserts and withstands step in fittings body from nut afterbody, in rotation during jack panel, after nut moves forward and advances, cutting ferrule drives in front cutting ferrule reach process, the front end G of front cutting ferrule shrinks under the bell-mouthed effect of fittings body, be pressed into pipe F, played first sealing and fastening effect; Along with constantly tightening of nut, the stressed of rear cutting ferrule progressively strengthens, in its front end circular arc and front cutting ferrule rear end, circular arc is squeezed and produces when shrinking, nut bottommost inclined-plane progressively disappears into H with the rear end angle a of rear cutting ferrule, the leverage power of its generation makes the front end of rear cutting ferrule snap in better pipe E, has formed second sealing and fastening effect.
2, there are the arc round angle of about R0.5 circular cone in the front end outside of described front cutting ferrule to middle bench, interior bore ends retains wedge angle, the circular arc that has about R1.5 in its rear end outwards with the arc transition of R0.25 left and right to end face, outer rounded ends leaves a small stair, also can not stay step.
3, there is the circular arc C of about R1.5 the front end outside of described rear cutting ferrule prolongs and is raised to step, and step is oblique angle P, and bore ends retains wedge angle; Ear end face is right angle.
4, front cutting ferrule and rear cutting ferrule all carry out cure process.
Advantage of the present invention and beneficial effect are:
1, the front and back cutting ferrule of pipe joint and pipe are realized two seals and twice clamping structure, make its sealability more reliable, and join strength is firmer, bears pressure more powerful.
2, adopt rear cutting ferrule rear end to coordinate with front cutting ferrule rear end circular arc with nut bottommost inclined-plane and rear cutting ferrule front end, structure, produces leverage power and snaps in pipe, makes pipe joint easier for installation easily.
3, reduced the harshness of pipe has been required and installation specification.
Accompanying drawing explanation
Fig. 1 is novel double card sleeve type pipe joint structural drawing;
Fig. 2 is the enlarged view of A in Fig. 1, and a is nut bottommost inclined-plane;
Fig. 3 is front cutting ferrule sectional drawing;
Fig. 4 is the enlarged view of B in Fig. 3;
Fig. 5 is rear cutting ferrule;
Fig. 6 is the enlarged view of C in Fig. 5;
Fig. 7 is that novel double card sleeve type pipe joint is installed the sectional drawing after connecting;
Fig. 8 is the enlarged view of A in Fig. 7.
In figure: 1, fittings body 2, nut 3, front cutting ferrule 4, rear cutting ferrule 5, pipe.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
1, a kind of novel double card sleeve type pipe joint, by fittings body (1), nut (2), front cutting ferrule (3), rear cutting ferrule (4), formed, it is characterized in that: the front end (B) of front cutting ferrule (3) coordinates with fittings body horn mouth, the front end (C) of rear cutting ferrule (4) contacts with the rear end inner arc surface of front cutting ferrule (3), and nut (2) screws in fittings body (1) makes the bottommost inclined-plane of nut (2) and the rear end of rear cutting ferrule (4) coincide and leave angle (a); The pipe (5) that needs are connected inserts and withstands the interior step of fittings body (1) from nut (2) afterbody, during jack panel in rotation (2), after nut (2) moves forward and advances, cutting ferrule (4) drives in front cutting ferrule (3) reach process, the front end (G) of front cutting ferrule (3) shrinks under the bell-mouthed effect of fittings body (1), be pressed into pipe (F), played first sealing and fastening effect; Along with constantly tightening of nut (2), the stressed of rear cutting ferrule (4) progressively strengthens, in its front end circular arc and front cutting ferrule (3) rear end, circular arc is squeezed and produces when shrinking, nut (2) bottommost inclined-plane progressively disappears into (H) with the rear end angle (a) of rear cutting ferrule (4), the leverage power of its generation makes the front end of rear cutting ferrule (4) snap in better pipe (E), has formed second sealing and fastening effect.
2, there are the arc round angle of about R0.5 circular cone in front end (B) outside of described front cutting ferrule (3) to middle bench, interior bore ends retains wedge angle, the circular arc that has about R1.5 in its rear end outwards with the arc transition of R0.25 left and right to end face, outer rounded ends leaves a small stair, also can not stay step.
3, there is the circular arc C of about R1.5 the front end outside of described rear cutting ferrule (4) prolongs and is raised to step, and step is oblique angle P, and bore ends retains wedge angle, and ear end face is right angle.
4, front cutting ferrule (3) and rear cutting ferrule (4) all carry out cure process.

Claims (4)

1. a novel double card sleeve type pipe joint, by fittings body (1), nut (2), front cutting ferrule (3), rear cutting ferrule (4), formed, it is characterized in that: the front end (B) of front cutting ferrule (3) coordinates with fittings body horn mouth, the front end (C) of rear cutting ferrule (4) contacts with the rear end inner arc surface of front cutting ferrule (3), and nut (2) screws in fittings body (1) makes the bottommost inclined-plane (a) of nut (2) and the rear end vertical surface of rear cutting ferrule (4) form angle (a); The pipe (5) that needs are connected inserts and withstands the interior step of fittings body (1) from nut (2) afterbody, during jack panel in rotation (2), after nut (2) moves forward and advances, cutting ferrule (4) drives in front cutting ferrule (3) reach process, the front end (G) of front cutting ferrule (3) shrinks under the bell-mouthed effect of fittings body (1), be pressed into pipe (F), played first sealing and fastening effect; Along with constantly tightening of nut (2), the stressed of rear cutting ferrule (4) progressively strengthens, in its front end circular arc and front cutting ferrule (3) rear end, circular arc is squeezed and produces when shrinking, nut (2) bottommost inclined-plane progressively disappears into (H) with the rear end angle (a) of rear cutting ferrule (4), the leverage power of its generation makes the front end of rear cutting ferrule (4) snap in better pipe (E), has formed second sealing and fastening effect.
2. a kind of novel double card sleeve type pipe joint according to claim 1, it is characterized in that: there are the arc round angle of about R0.5 circular cone in the front end outside of described front cutting ferrule (3) to middle bench, interior bore ends retains wedge angle, the circular arc that has about R1.5 in its rear end outwards with the arc transition of R0.25 left and right to end face, outer rounded ends leaves a small stair, also can not stay step.
3. a kind of novel double card sleeve type pipe joint according to claim 1, is characterized in that: there is the circular arc of R1.5 left and right the front end outside of described rear cutting ferrule (4) prolongs and is raised to step, and step is oblique angle P, and bore ends retains wedge angle, and ear end face is right angle.
4. a kind of novel double card sleeve type pipe joint according to claim 1, is characterized in that: described front cutting ferrule (3) and rear cutting ferrule (4) all carry out cure process.
CN201310593161.1A 2013-11-23 2013-11-23 Novel two-ferrule tube fitting Pending CN103591402A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310593161.1A CN103591402A (en) 2013-11-23 2013-11-23 Novel two-ferrule tube fitting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310593161.1A CN103591402A (en) 2013-11-23 2013-11-23 Novel two-ferrule tube fitting

Publications (1)

Publication Number Publication Date
CN103591402A true CN103591402A (en) 2014-02-19

Family

ID=50081646

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310593161.1A Pending CN103591402A (en) 2013-11-23 2013-11-23 Novel two-ferrule tube fitting

Country Status (1)

Country Link
CN (1) CN103591402A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110195470A (en) * 2019-06-17 2019-09-03 范拓 Building element connection structure
CN110500455A (en) * 2018-05-16 2019-11-26 深圳市飞托克实业有限公司 Double card covers connection component
CN110715123A (en) * 2019-10-22 2020-01-21 湖北瑞合轨道交通发展有限公司 Double-clamping sleeve sealing structure
CN111247364A (en) * 2017-10-12 2020-06-05 乔治费歇尔哈维尔有限责任公司 Development of Fuseal mechanical joints

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2154942Y (en) * 1993-05-14 1994-02-02 颜扬标 Double-clamping sleeve blow-out patch
CN201916622U (en) * 2010-12-21 2011-08-03 北京熊川阀门制造有限公司 Pipe joint
CN102691835A (en) * 2011-03-21 2012-09-26 浙江快科科技有限公司 Double-ferrule type pipe joint
CN203176578U (en) * 2013-03-21 2013-09-04 宁波恒普真空技术有限公司 Sealed type double-clamping-sleeve joint
CN203560626U (en) * 2013-11-23 2014-04-23 江苏星河阀门有限公司 Novel pipe joint with double ferrules

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2154942Y (en) * 1993-05-14 1994-02-02 颜扬标 Double-clamping sleeve blow-out patch
CN201916622U (en) * 2010-12-21 2011-08-03 北京熊川阀门制造有限公司 Pipe joint
CN102691835A (en) * 2011-03-21 2012-09-26 浙江快科科技有限公司 Double-ferrule type pipe joint
CN203176578U (en) * 2013-03-21 2013-09-04 宁波恒普真空技术有限公司 Sealed type double-clamping-sleeve joint
CN203560626U (en) * 2013-11-23 2014-04-23 江苏星河阀门有限公司 Novel pipe joint with double ferrules

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111247364A (en) * 2017-10-12 2020-06-05 乔治费歇尔哈维尔有限责任公司 Development of Fuseal mechanical joints
CN110500455A (en) * 2018-05-16 2019-11-26 深圳市飞托克实业有限公司 Double card covers connection component
CN110500455B (en) * 2018-05-16 2021-11-09 深圳市飞托克实业有限公司 Double-clamping sleeve connecting assembly
CN110195470A (en) * 2019-06-17 2019-09-03 范拓 Building element connection structure
CN110195470B (en) * 2019-06-17 2020-11-03 浙江皓睿建设有限公司 Building element connection structure
CN110715123A (en) * 2019-10-22 2020-01-21 湖北瑞合轨道交通发展有限公司 Double-clamping sleeve sealing structure

Similar Documents

Publication Publication Date Title
CN103591402A (en) Novel two-ferrule tube fitting
KR101181731B1 (en) Tube connecter with connecting protrusion
CN203940141U (en) A kind of pipe joint
CN207584216U (en) A kind of ferrule-type compression joint with inner card cage
CN203560626U (en) Novel pipe joint with double ferrules
CN105757367B (en) A kind of ferrule fitting device
CN201074712Y (en) Leak-proof quick joint for pipe
CN201053546Y (en) Ferrule type pipeline joint
CN203517102U (en) Flexible pipe connector
CN205877487U (en) PE manages connection structure
CN204739338U (en) Pipeline connecting device that no repaired mouth solderless connect
CN205716105U (en) A kind of ferrule fitting device
CN103807526A (en) Clamping sleeve type metal sealing pipe joint and using method thereof
CN204284723U (en) A kind of Large Chassis connection pipe fitting assembly
CN201180875Y (en) Detachable connecting pipe fitting
CN2924236Y (en) Pipeline connector
CN203147105U (en) Novel attachment joint
CN201434177Y (en) Aluminum-plastic pipe connecting structure
CN205689943U (en) A kind of attachment structure for metal tube
CN202056432U (en) Through terminal connector with double clamping sleeves
CN205479819U (en) Sealed cutting ferrule formula pipe joint who combines of soft or hard
CN214741642U (en) Reverse integrated adapter connector for engine oil cooler
CN203010089U (en) Water dividing and collecting device
CN203847851U (en) Metal and plastic composite pipe connection device
KR101165203B1 (en) Tube connecter

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20140219