CN108506607B - Cutting sleeve type pipe joint - Google Patents
Cutting sleeve type pipe joint Download PDFInfo
- Publication number
- CN108506607B CN108506607B CN201810600305.4A CN201810600305A CN108506607B CN 108506607 B CN108506607 B CN 108506607B CN 201810600305 A CN201810600305 A CN 201810600305A CN 108506607 B CN108506607 B CN 108506607B
- Authority
- CN
- China
- Prior art keywords
- nut
- push rod
- hole
- fixing bolt
- joint body
- 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.)
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Classifications
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- 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
- F16L19/0206—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the collar not being integral with the pipe
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- 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
- F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
- F16L15/04—Screw-threaded joints; Forms of screw-threads for such joints with additional sealings
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- 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
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- 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
- F16L19/0237—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member specially adapted for use with attachments, e.g. reduction units, T-pieces, bends or the like
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints With Sleeves (AREA)
- Joints With Pressure Members (AREA)
Abstract
The invention discloses a clamping sleeve type pipe joint which comprises a joint body, a nut, a fixing bolt, a pressure head, a clamping sleeve, a control bolt, a push rod and a connected pipe, wherein first through holes are respectively formed in the upper end and the lower end of the nut, a nut inclined surface portion is arranged on the inner side of the left end of the nut, a step propped against the right end of the connected pipe is arranged on the inner side of the joint body, the left end of the step is connected with the step inclined surface portion, the clamping sleeve comprises a pointed portion, an introduction portion and a control portion, a second through hole is formed in the upper end of the control portion, a long through hole is formed in the middle of the push rod, the connected pipe is primarily fixed through an elastic rubber ring, the push rod is pushed by screwing in the nut on the joint body, the clamping sleeve is pushed, the pointed portion of the clamping sleeve is gradually inserted into the surface of the connected pipe until the control bolt props against the joint body to secondarily fix the connected pipe, the end is screwed down through adjusting the screwing-out length of the control bolt, and the push rod is pushed down to be inserted into the surface of the connected pipe for three times through the fixing bolt.
Description
Technical Field
The invention relates to the technical field of pipe joints, in particular to the technical field of a clamping sleeve type pipe joint.
Background
The installation operation that the cutting ferrule formula coupling was connected the pipeline is very convenient, at present, in automobile-used natural gas feed system, and fuel pipeline's connected mode is usually connected with cutting ferrule formula, but because vibration, pipeline surface quality and the liquefied natural gas pipeline's that the vehicle produced when the operation change reasons such as very big, very easily cause the leakproofness of pipeline to drop and lead to the fuel leakage, consequently effectively guarantee the leakproofness of pipeline joint is the key of natural gas vehicle feed system safe and reliable operation.
The cutting sleeve type pipe joint generally requires a precise seamless pipe with specified hardness to be used as a connected pipe, and has the connecting characteristic that the cutting edge of the cutting sleeve is used for tightly biting the pipe wall of a pipeline so as to seal high-pressure fluid in the pipe; in addition, compared with a welded pipe joint, the clamping sleeve type pipe joint can not generate oxide skin in the installation process to cause pipeline pollution, so that the clamping sleeve type pipe joint is widely applied to small-pipe-diameter high-low pressure common pipeline systems.
In the common single-ferrule type structure, no abrupt force change is caused to an operator in the process of connecting the connected pipes, and the operator cannot feel the 'end' of the tightening operation, so that the operator cannot feel that the fastening connection is finished, and often the clamping ferrule cuts the joint surface of the connected pipes more deeply and more concavely, the tightness of the connection is better, but the pressure-bearing capacity of the connected pipes is very easy to be reduced due to the fact that the cutting is too deep; in addition, in the tensioning and pushing process of the clamping sleeve, the force acting on the nut is completely transmitted to the clamping sleeve, and when the driving force of the nut to the rotation of the clamping sleeve is greater than the resistance of the joint body and the connected pipe to the rotation of the clamping sleeve, the clamping sleeve can scratch or damage the sealing joint surface along with the rotation of the nut, so that the fuel leakage accident is caused.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a cutting sleeve type pipe joint, which can preliminarily fix a connected pipe through an elastic rubber ring, push a pusher through screwing a nut on a joint body so as to push a cutting sleeve, enable a pointed part of the cutting sleeve to gradually insert into the surface of the connected pipe until a control bolt abuts against the joint body to secondarily fix the connected pipe, adjust a screwing-out end through adjusting the screwing-out length of the control bolt, and push a pressing head to insert into the surface of the connected pipe to secondarily fix the connected pipe through downwards screwing a fixing bolt.
In order to achieve the above purpose, the invention provides a ferrule-type pipe joint, which comprises a joint body, a nut, a fixing bolt, a pressure head, a ferrule, a control bolt, a push rod and a connected pipe, wherein the surface of the left end of the joint body is provided with an external thread part, the inner side of the nut is provided with an internal thread, the upper end and the lower end of the nut are respectively provided with a first through hole, the inner side of the left end of the nut is provided with a nut inclined surface part, the inner side of the joint body is provided with a step propped against the right end of the connected pipe, the left end of the step is connected with the step inclined surface part, the ferrule comprises a pointed part, an introduction part and a control part, the upper end of the control part is provided with a second through hole, the right end of the push rod is provided with a push head, the push head is L-shaped, the middle part of the push rod is provided with a long through hole, and the left end of the push rod is provided with a push rod inclined surface part.
Preferably, an elastic rubber ring is arranged on the inner side of the step, and the number of the elastic rubber rings is 3 to 6.
Preferably, a retainer ring is arranged at the right end of the tip part.
Preferably, a sealing rubber ring is arranged at the right end of the retainer ring.
Preferably, a cutting groove is arranged at the bottom end of the joint of the tip part and the leading-in part.
Preferably, the press head is inserted into the long through hole, and the diameter of the top end of the press head is smaller than the diameter of the screw rod of the fixing bolt.
Preferably, the first through hole and the second through hole are both internally provided with internal threads, the fixing bolt is screwed into the first through hole, and the control bolt is screwed into the second through hole.
The invention has the beneficial effects that: according to the invention, the connected pipe is preliminarily fixed through the elastic rubber ring, the nut is screwed in on the connector body to push the push rod so as to push the clamping sleeve, so that the pointed end of the clamping sleeve is gradually inserted into the surface of the connected pipe until the control bolt abuts against the connector body to secondarily fix the connected pipe, the screwing-out length of the control bolt is adjusted to screw the end, and the fixing bolt is screwed downwards to push the pressure head to be inserted into the surface of the connected pipe to tertiary fix the connected pipe.
The features and advantages of the present invention will be described in detail by way of example with reference to the accompanying drawings.
Drawings
Fig. 1 is a front cross-sectional view of a ferrule type tube fitting of the present invention.
In the figure: 1-joint body, 11-elastic rubber ring, 12-external screw thread portion, 13-step bevel portion, 14-step, 2-nut, 21-first through hole, 22-nut bevel portion, 31-fixing bolt, 32-pressure head, 4-cutting ferrule, 41-tip portion, 42-leading-in portion, 43-control portion, 44-second through hole, 5-control bolt, 6-push rod, 61-push head, 62-long through hole, 63-push rod bevel portion, 7-connected pipe, 8-check ring and 9-sealing rubber ring.
Detailed Description
Referring to fig. 1, the ferrule-type pipe joint of the invention comprises a joint body 1, a nut 2, a fixing bolt 31, a pressure head 32, a ferrule 4, a control bolt 5, a push rod 6 and a connected pipe 7, wherein the left end surface of the joint body 1 is provided with an external thread 12, the inner side of the nut 2 is provided with an internal thread, the upper end and the lower end of the nut 2 are respectively provided with a first through hole 21, the inner side of the left end of the nut 2 is provided with a nut inclined surface 22, the inner side of the joint body 1 is provided with a step 14 abutted against the right end of the connected pipe 7, the left end of the step 14 is connected with a step inclined surface 13, the ferrule 4 comprises a tip part 41, a guide part 42 and a control part 43, the upper end of the control part 43 is provided with a second through hole 44, the right end of the push rod 6 is provided with a push rod 61, the push rod 61 is L-shaped, the middle part of the push rod 6 is provided with a long through hole 62, the left end of the push rod 6 is provided with a push rod inclined surface 63, the inner side of the step 14 is provided with a rubber ring 11, the number of the rubber ring 11 is 3, the number of the rubber ring 11 is the tip part 3 is screwed into the tip part 6 to the right end of the second through hole 21, the tip part is provided with the second through hole 21, the diameter is fixed at the tip part 31, the diameter of the tip part is fixed at the tip part is equal to the diameter of the second through hole 32, and the tip part is provided with the diameter of the second through hole 32, and the tip part is fixed at the tip part 32, and the diameter is screwed into the second through hole 32 is provided with the tip part is provided with the hole 3 and is provided with the hole is 31, and is screwed into the hole is 31.
The working process of the invention comprises the following steps:
in the working process of the sleeve-type pipe joint, firstly, a connected pipe 7 is inserted into a joint body 1, the right end of the connected pipe 7 is propped against a step 14 of the joint body 1, an elastic rubber ring 11 is compressed to generate rebound force pointing to the axis to press the connected pipe 7, a control bolt 5 is screwed into a second through hole 44, the length of a screw extension control part 43 of the control bolt 5 is determined according to the thickness and the diameter of the connected pipe 7, a sleeve 4, a push rod 6 and a nut 3 are sleeved on the connected pipe 7 in sequence, the nut 2 is gradually screwed right, a nut inclined surface part 22 of the nut 2 is propped against a push rod inclined surface part 63 of the push rod 6 and drives the push rod 6 to move right, the right side of the upper end of the push rod 61 is propped against the left side of the control part 43, the right end protruding part of the push rod 61 is propped against the lower surface of an introducing part 42, the push rod 6 pushes the cutting sleeve 4 to move rightwards, the inclined top surface of the leading-in part 42 of the cutting sleeve 4 is abutted against the step inclined surface part 13, as the bottom end of the joint of the tip part 41 and the leading-in part 42 is provided with a groove, the tip part 41 bends downwards and gradually inserts into the surface of the connected pipe 7 until the right end of the control bolt 5 abuts against the joint body 1 along with the pushing of the cutting sleeve 4 to move rightwards, the sealing rubber ring 9 provides sealing between the tip part 41, the connected pipe 7 and the joint body 1, the retainer ring 8 abuts between the sealing rubber ring 9 and the tip part 41 to provide supporting and auxiliary sealing, the pressure head 32 is inserted into the long through hole 62, the fixing bolt 31 is screwed into the first through hole 21, and the fixing bolt 31 pushes the pressure head 32 to gradually press into the surface of the connected pipe 7 along with the gradual screwing of the fixing bolt 31 to the axle center.
According to the invention, the connected pipe is preliminarily fixed through the elastic rubber ring, the nut is screwed in on the connector body to push the push rod so as to push the clamping sleeve, so that the pointed end of the clamping sleeve is gradually inserted into the surface of the connected pipe until the control bolt abuts against the connector body to secondarily fix the connected pipe, the screwing-out length of the control bolt is adjusted to screw the end, and the fixing bolt is screwed downwards to push the pressure head to be inserted into the surface of the connected pipe to tertiary fix the connected pipe.
The above embodiments are illustrative of the present invention, and not limiting, and any simple modifications of the present invention fall within the scope of the present invention.
Claims (5)
1. A ferrule-type pipe joint, characterized in that: including joint body (1), nut (2), fixing bolt (31), pressure head (32), cutting ferrule (4), control bolt (5), push rod (6) and by connecting pipe (7), the left end surface of joint body (1) be equipped with external screw thread portion (12), the inboard of nut (2) is equipped with the internal screw thread, nut (2) cover is outside external screw thread portion (12), the upper and lower both ends of nut (2) respectively are equipped with first through-hole (21), the left end inboard of nut (2) is equipped with nut inclined plane portion (22), the inboard of joint body (1) be equipped with by the right-hand member tight step (14) of connecting pipe (7), the left end of step (14) is connected with step inclined plane portion (13), cutting ferrule (4) are equipped with second through-hole (44) including tip portion (41), leading-in portion (42) and control portion (43), in control bolt (5) screw in second through-hole (44), the right-hand member of push rod (6) is equipped with push rod (61), push rod (61) "is inclined plane portion (62', push rod (6) is long font, the right end of the tip part (41) is provided with a check ring (8), and the right end of the check ring (8) is provided with a sealing rubber ring (9); when the nut (2) is used, the nut bevel part (22) of the nut (2) is gradually screwed right to prop against the push rod bevel part (63) of the push rod (6) and drive the push rod (6) to move right, the right side of the upper end of the push head (61) is propped against the left side of the control part (43), the right end protruding part of the push head (61) is propped against the lower surface of the guide part (42), the push rod (6) pushes the clamping sleeve (4) to move right, and the inclined top surface of the guide part (42) of the clamping sleeve (4) is propped against the step bevel part (13); when in use, the pointed part (41) is bent downwards and gradually inserted into the surface of the connected pipe (7) until the right end of the control bolt (5) abuts against the joint body (1); when the pressure head (32) is used, the pressure head is inserted into the long through hole (62), the fixing bolt (31) is screwed into the first through hole (21), and the pressure head (32) is pushed by the fixing bolt (31) to be gradually pressed into the surface of the connected pipe (7) along with the gradual screwing of the fixing bolt (31) to the axis.
2. A ferrule type pipe fitting as defined in claim 1, wherein: the inner side of the step (14) is provided with elastic rubber rings (11), and the number of the elastic rubber rings (11) is 3 to 6.
3. A ferrule type pipe fitting as defined in claim 1, wherein: the bottom end of the joint of the tip part (41) and the leading-in part (42) is provided with a cutting groove.
4. A ferrule type pipe fitting as defined in claim 1, wherein: the pressing head (32) is inserted into the long through hole (62), and the diameter of the top end of the pressing head (32) is smaller than the diameter of a screw rod of the fixing bolt (31).
5. A ferrule type pipe fitting as defined in claim 1, wherein: the first through hole (21) and the second through hole (44) are internally provided with internal threads, the fixing bolt (31) is screwed into the first through hole (21), and the control bolt (5) is screwed into the second through hole (44).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810600305.4A CN108506607B (en) | 2018-06-12 | 2018-06-12 | Cutting sleeve type pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810600305.4A CN108506607B (en) | 2018-06-12 | 2018-06-12 | Cutting sleeve type pipe joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108506607A CN108506607A (en) | 2018-09-07 |
| CN108506607B true CN108506607B (en) | 2023-09-26 |
Family
ID=63403295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810600305.4A Active CN108506607B (en) | 2018-06-12 | 2018-06-12 | Cutting sleeve type pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108506607B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102143432B1 (en) * | 2018-10-11 | 2020-08-11 | 세메스 주식회사 | Swing nozzle unit |
| CN110318707A (en) * | 2019-07-04 | 2019-10-11 | 中国石油集团渤海钻探工程有限公司 | Oil pipe external seal cock valve connector |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2286334A1 (en) * | 1974-09-27 | 1976-04-23 | Kubota Ltd | Pipe connector for telescoped pipe ends - has retaining ring compressed against surface of tube by radial screws |
| JP2007162742A (en) * | 2005-12-09 | 2007-06-28 | Daikin Ind Ltd | Flareless type pipe joint and refrigerating cycle device using the same |
| EP3096059A1 (en) * | 2015-05-19 | 2016-11-23 | Freudenberg Oil & Gas, LLC | Rotary coupling |
| CN208442419U (en) * | 2018-06-12 | 2019-01-29 | 海盐六里液压管件有限公司 | A kind of ferrule-type compression joint |
-
2018
- 2018-06-12 CN CN201810600305.4A patent/CN108506607B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2286334A1 (en) * | 1974-09-27 | 1976-04-23 | Kubota Ltd | Pipe connector for telescoped pipe ends - has retaining ring compressed against surface of tube by radial screws |
| JP2007162742A (en) * | 2005-12-09 | 2007-06-28 | Daikin Ind Ltd | Flareless type pipe joint and refrigerating cycle device using the same |
| EP3096059A1 (en) * | 2015-05-19 | 2016-11-23 | Freudenberg Oil & Gas, LLC | Rotary coupling |
| CN208442419U (en) * | 2018-06-12 | 2019-01-29 | 海盐六里液压管件有限公司 | A kind of ferrule-type compression joint |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108506607A (en) | 2018-09-07 |
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