CN102691835A - Double-ferrule type pipe joint - Google Patents
Double-ferrule type pipe joint Download PDFInfo
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- CN102691835A CN102691835A CN2011100671286A CN201110067128A CN102691835A CN 102691835 A CN102691835 A CN 102691835A CN 2011100671286 A CN2011100671286 A CN 2011100671286A CN 201110067128 A CN201110067128 A CN 201110067128A CN 102691835 A CN102691835 A CN 102691835A
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- cutting ferrule
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- nut
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Abstract
A double-ferrule type pipe joint comprises a joint, a pipe connected with the joint in a fitted manner, a nut for compactly connecting the joint with the pipe, a front ferrule and a rear ferrule, a wide mouth end of the nut being connected with the joint, and a narrow mouth end of the nut being adaptive to the diameter of the pipe. The double-ferrule type pipe joint is characterized in that: both of the front ferrule and the rear ferrule are metal parts; an external ring surface of a hollow annular convex stage of the front ferrule compactly fits with a joint chute, a front end cutting edge of an internal ring surface of the hollow annular convex stage penetrates into the pipe body, and an external ring step surface and an external ring horizontal surface of the front ferrule seal the gap between a front edge of the joint chute and a nut platform; a rear end chamfer surface of the rear ferrule compactly fits with a nut chute arranged at the narrow mouth side of the nut, a front end lug ring of the rear ferrule extends into a front ferrule platform and a front ferrule chute sequentially, and a front end cutting edge of the lug ring penetrates into the pipe body under the pressure of the front ferrule chute. The double-ferrule type pipe joint in the invention has the advantages of reliable sealing, good anti-shedding performance, good anti-vibration performance, convenient installation, high-temperature resistance ability, high-pressure resistance ability, wide application range and the like.
Description
Technical field:
The present invention relates to industrial Bite type fittings, particularly a kind of pair of Bite type fittings.
Background technique:
Bite type fittings specifically is divided into single deck tape-recorder shell type pipe joint and two Bite type fittingss, and single deck tape-recorder shell type pipe joint is replaced by two Bite type fittingss because defective is numerous now gradually.At present, common two Bite type fittingss have two kinds, and a kind of is the EO-2 type pipe joint (as shown in Figure 1) of Parker company, and another kind is that two cutting ferrule mechanical types of the big Luo Ke of generation company are firmly grasped pipe joint (as shown in Figure 2).
The structural feature of EO-2 type pipe joint is: sulfuration in the rubber seal on the metal positioning ring 12 between the outer wall of the inner cone of fittings body 3 and pipe 4; Blocked the unique leakage way of fittings body, cutting ferrule 5 front ends get in the skewed slot of seal ring 2 with skewed slot is closely knit and cooperate and cut in pipe 4 body surfaces.This pipe joint structure has good sealing, high pressure resistant and anti-pulling-and-doffing performance ability; But, use so be suitable for the connection of the pipe joint under the high-temperature work environment owing to therebetween rubber seal easy ageing or melt and cause occurring leakage phenomenon when running into high temperature.
The structural feature that two cutting ferrule mechanical types are firmly grasped pipe joint is: preceding cutting ferrule 1 is pushed into joint body 2 and forms primary seal with cutting ferrule pipe 3; Back cutting ferrule 4 inwardly produces hinge effect cutting ferrule pipe 3 is carried out lateral extrusion, and make cutting ferrule pipe 3 produce distortion and form strong promptly.This pipe joint structure has splendid gas seal and the cutting ferrule pipe is firmly grasped performance; But can not bear high pressure; Otherwise the reverse return of the deformation place that can make the cutting ferrule pipe and cause the back cutting ferrule phenomenon that occurs getting loose, thereby be not suitable for the connection use of the test instrumentation pipe joint the high-pressure work environment under.
Summary of the invention:
The objective of the invention is to overcome the deficiency of above-mentioned existing technology, provide a kind of seal reliable, the anticreep performance is good, the vibrationproof performance is strong, easy for installation and two Bite type fittingss that can be high temperature resistant and high pressure resistant, applied widely.
In order to realize the foregoing invention purpose, the present invention has adopted following technological scheme:
A kind of pair of Bite type fittings; The pipe that comprises joint, is connected with joint, be used for the closely knit nut that is connected of joint and pipe and before cutting ferrule and back cutting ferrule; Wide mouthful of end of nut is connected with joint screw thread; Nut slot one end and pipe caliber are suitable, and said preceding cutting ferrule is metallic article with the back cutting ferrule, and the outer ring surface of the hollow ring boss of said preceding cutting ferrule cooperates with the joint skewed slot is closely knit; In the front end cutting edge incision pipe body surface of the inner ring surface of hollow ring boss; The outer shroud step surface of preceding cutting ferrule and outer shroud horizontal plane are with the leading edge and the sealing of the gap between the nut platform of joint skewed slot, and the rear end chamfer surface of said back cutting ferrule and closely knit cooperation of nut skewed slot of nut slot one side, the front end lug ring of said back cutting ferrule gets in preceding cutting ferrule platform and the preceding cutting ferrule skewed slot in regular turn; And under the urging of preceding cutting ferrule skewed slot, in the front end cutting edge of the lug ring incision pipe body surface.
Cutting ferrule and back cutting ferrule are the stainless steel product of global formation before said.
The outer ring surface of said hollow ring boss is made up of a lead-in chamfered and a horizontal plane, and the inner ring surface of said hollow ring boss is provided with an inner groovy.
The outer ring surface front end of said lug ring is provided with a chamfer surface, and the inner ring surface of said lug ring is provided with an inner groovy.
Heat-treat through plasma low-temperature aura surface treatment stove when cutting ferrule is made with the back cutting ferrule before said.
The present invention has following advantage with respect to existing technology:
1, after forward and backward cutting ferrule is pressed into, is the drum shape distortion, plays spring action; Its front end cutting edge is cut tube surface simultaneously; The rear end then closely is connected with nut with pipe, thereby has greatly improved the stability of pipe joint anticreep, vibrationproof, has increased the reliability of line seal and connection.
2, since forward and backward cutting ferrule all be designed to can resistant to elevated temperatures metallic article; And two cutting ferrules are cut simultaneously and can be made it bear high pressure; So this pipe joint structure can be applicable to the connection of the test instrumentation pipe joint under pipeline pipe joint and high temperature, the high-pressure work environment and use that accommodation is extensive simultaneously.
3, reliable sealing performance, except two cutting ferrules are cut the tube surface simultaneously, forward and backward cutting ferrule is also respectively with joint with nut is closely knit cooperates.
4, easy for installation.
Description of drawings:
Fig. 1 is the structural representation of the EO-2 type pipe joint of Parker company.
Fig. 2 firmly grasps the structural representation of pipe joint for two cutting ferrule mechanical types of the big Luo Ke of generation company.
Fig. 3 is the structural representation of the two Bite type fittingss of the present invention.
Fig. 4 be among Fig. 3 before cutting ferrule with the back cutting ferrule structural representation.
Embodiment:
As shown in Figure 1; According to a kind of pair of Bite type fittings provided by the invention; The pipe 2 that comprises joint 1, is connected with joint 1, be used for joint 1 and the pipe 2 closely knit nuts that are connected 3 and before cutting ferrule 4 and back cutting ferrule 5; 3 wide mouthfuls of ends of nut are threaded with joint 1, and nut 3 slots, one end and pipe 2 calibers are suitable.Before cutting ferrule 4 and back cutting ferrule 5 be can resistant to elevated temperatures metallic article, thereby applicable to the connection use of the pipe joint high-temperature work environment under.The outer ring surface 411 and 11 closely knit cooperations of joint skewed slot of the hollow ring boss 41 of preceding cutting ferrule 4; In front end cutting edge 412 incision pipes 2 body surfaces of the inner ring surface of hollow ring boss 41, the outer shroud step surface 42 of preceding cutting ferrule 4 and outer shroud horizontal plane 43 seal the gap between the platform of the leading edge of joint skewed slot 11 and nut 3.31 closely knit cooperations of nut skewed slot of the rear end chamfer surface 51 of back cutting ferrule 5 and nut 3 slots one side; The front end lug ring 52 of back cutting ferrule 5 gets in preceding cutting ferrule platform 44 and the preceding cutting ferrule skewed slot 45 in regular turn; And under the urging of preceding cutting ferrule skewed slot 45, in front end cutting edge 521 incision pipes 2 body surfaces of lug ring 52.
As stated, preceding cutting ferrule 4 is preferably the stainless steel product of global formation with back cutting ferrule 5, and heat-treats through plasma low-temperature aura surface treatment stove when making, to improve the surface hardness of forward and backward cutting ferrule.The outer ring surface of hollow ring boss 41 is made up of a lead-in chamfered 414 and a horizontal plane 415; The inner ring surface of hollow ring boss 41 is provided with an inner groovy 413; The effect of lead-in chamfered 414 is that guiding hollow ring boss 41 gets into joint skewed slot 11 smoothly, and horizontal plane 415 makes hollow ring boss 41 bending distortion chucking when pressurized with 413 of inner groovies.
The outer ring surface front end of lug ring 52 is provided with a chamfer surface 524, and this chamfer surface 524 is used for guide lug ring 52 and enters into preceding cutting ferrule skewed slot 45, and the inner ring surface of lug ring 52 is provided with an inner groovy 523, so that lug ring 52 can pressurized bendings distortion chucking.
The foregoing description only supplies to explain the present invention's usefulness; And be not limitation of the present invention; The those of ordinary skill in relevant technologies field under the situation that does not break away from the spirit and scope of the present invention, can also be made various variations and modification; Therefore all technological schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be limited each claim.
Claims (5)
1. two Bite type fittings; The pipe that comprises joint, is connected with joint, be used for the closely knit nut that is connected of joint and pipe and before cutting ferrule and back cutting ferrule; Wide mouthful of end of nut is connected with joint screw thread; Nut slot one end and pipe caliber are suitable, it is characterized in that: cutting ferrule is metallic article with the back cutting ferrule before said, and the outer ring surface of the hollow ring boss of said preceding cutting ferrule cooperates with the joint skewed slot is closely knit; In the front end cutting edge incision pipe body surface of the inner ring surface of hollow ring boss; The outer shroud step surface of preceding cutting ferrule and outer shroud horizontal plane are with the leading edge and the sealing of the gap between the nut platform of joint skewed slot, and the rear end chamfer surface of said back cutting ferrule and closely knit cooperation of nut skewed slot of nut slot one side, the front end lug ring of said back cutting ferrule gets in preceding cutting ferrule platform and the preceding cutting ferrule skewed slot in regular turn; And under the urging of preceding cutting ferrule skewed slot, in the front end cutting edge of the lug ring incision pipe body surface.
2. pair Bite type fittings as claimed in claim 1 is characterized in that: cutting ferrule and back cutting ferrule are the stainless steel product of global formation before said.
3. pair Bite type fittings as claimed in claim 1 is characterized in that: the outer ring surface of said hollow ring boss is made up of a lead-in chamfered and a horizontal plane, and the inner ring surface of said hollow ring boss is provided with an inner groovy.
4. pair Bite type fittings as claimed in claim 1 is characterized in that: the outer ring surface front end of said lug ring is provided with a chamfer surface, and the inner ring surface of said lug ring is provided with an inner groovy.
5. pair Bite type fittings as claimed in claim 1 is characterized in that: heat-treat through plasma low-temperature aura surface treatment stove when cutting ferrule is made with the back cutting ferrule before said.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100671286A CN102691835A (en) | 2011-03-21 | 2011-03-21 | Double-ferrule type pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100671286A CN102691835A (en) | 2011-03-21 | 2011-03-21 | Double-ferrule type pipe joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102691835A true CN102691835A (en) | 2012-09-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100671286A Pending CN102691835A (en) | 2011-03-21 | 2011-03-21 | Double-ferrule type pipe joint |
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| Country | Link |
|---|---|
| CN (1) | CN102691835A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591402A (en) * | 2013-11-23 | 2014-02-19 | 江苏星河阀门有限公司 | Novel two-ferrule tube fitting |
| CN103807526A (en) * | 2012-11-13 | 2014-05-21 | 南车青岛四方机车车辆股份有限公司 | Clamping sleeve type metal sealing pipe joint and using method thereof |
| CN104110545A (en) * | 2013-07-09 | 2014-10-22 | 海盐县海管管件制造有限公司 | Quick-plugging pipe connector |
| CN105715884A (en) * | 2016-03-09 | 2016-06-29 | 张素平 | Air inlet pipe connector of experimental type vacuum coating equipment |
| CN106764145A (en) * | 2017-01-05 | 2017-05-31 | 宁波市鄞州纳沙液压器材有限公司 | Function nut and ferrule-type compression joint |
| CN110185864A (en) * | 2019-06-21 | 2019-08-30 | 海盐来福五金有限公司 | A kind of hardware line pipe road falls off the ferrule-type compression joint of automatic-diversion closure |
| 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 |
| CN111102408A (en) * | 2019-12-23 | 2020-05-05 | 北京航空航天大学 | Cathode pipeline insulating sealing joint of electric propulsion engine |
| CN113864545A (en) * | 2021-11-05 | 2021-12-31 | 易得福(浙江)流体科技有限公司 | Double-ferrule pipe joint |
| CN115234750A (en) * | 2022-06-20 | 2022-10-25 | 东北大学 | Winding fiber/metal/viscoelastic material mixed pipeline with complex pipe shape and vibration and pressure resisting function and manufacturing method thereof |
-
2011
- 2011-03-21 CN CN2011100671286A patent/CN102691835A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807526A (en) * | 2012-11-13 | 2014-05-21 | 南车青岛四方机车车辆股份有限公司 | Clamping sleeve type metal sealing pipe joint and using method thereof |
| CN103807526B (en) * | 2012-11-13 | 2017-02-22 | 中车青岛四方机车车辆股份有限公司 | Clamping sleeve type metal sealing pipe joint and using method thereof |
| CN104110545A (en) * | 2013-07-09 | 2014-10-22 | 海盐县海管管件制造有限公司 | Quick-plugging pipe connector |
| CN104110545B (en) * | 2013-07-09 | 2016-07-06 | 海盐县海管管件制造有限公司 | Quick-insertion type pipe joint |
| CN103591402A (en) * | 2013-11-23 | 2014-02-19 | 江苏星河阀门有限公司 | Novel two-ferrule tube fitting |
| CN105715884A (en) * | 2016-03-09 | 2016-06-29 | 张素平 | Air inlet pipe connector of experimental type vacuum coating equipment |
| CN106764145A (en) * | 2017-01-05 | 2017-05-31 | 宁波市鄞州纳沙液压器材有限公司 | Function nut and ferrule-type compression joint |
| 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 |
| CN110185864A (en) * | 2019-06-21 | 2019-08-30 | 海盐来福五金有限公司 | A kind of hardware line pipe road falls off the ferrule-type compression joint of automatic-diversion closure |
| CN110185864B (en) * | 2019-06-21 | 2024-03-22 | 嘉兴莱福精密机械有限公司 | Cutting ferrule formula coupling that automatic shutoff of pipeline drops for five metals pipeline |
| CN111102408A (en) * | 2019-12-23 | 2020-05-05 | 北京航空航天大学 | Cathode pipeline insulating sealing joint of electric propulsion engine |
| CN113864545A (en) * | 2021-11-05 | 2021-12-31 | 易得福(浙江)流体科技有限公司 | Double-ferrule pipe joint |
| CN113864545B (en) * | 2021-11-05 | 2023-02-03 | 易得福(浙江)流体科技有限公司 | Double-ferrule pipe joint |
| CN115234750A (en) * | 2022-06-20 | 2022-10-25 | 东北大学 | Winding fiber/metal/viscoelastic material mixed pipeline with complex pipe shape and vibration and pressure resisting function and manufacturing method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120926 |