CN103511772A - Telescopic and rotatable metal tube connector - Google Patents
Telescopic and rotatable metal tube connector Download PDFInfo
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- CN103511772A CN103511772A CN201310475411.1A CN201310475411A CN103511772A CN 103511772 A CN103511772 A CN 103511772A CN 201310475411 A CN201310475411 A CN 201310475411A CN 103511772 A CN103511772 A CN 103511772A
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- piston
- cylinder barrel
- assembly
- tube connector
- cylinder
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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
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/12—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement
- F16L27/125—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement having longitudinal and rotary movement
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Abstract
The invention provides a telescopic and rotatable metal tube connector. The telescopic and rotatable metal tube connector comprises a tube connector assembly and a connecting tube assembly, wherein the connecting tube assembly comprises a piston assembly and a cylinder matched with the piston assembly, one end of the cylinder is in sliding sealing fit with the piston assembly, and the other end of the cylinder is connected with the tube connector assembly; the piston assembly comprises a hollow tubular piston rod, one end of the piston rod is a piston head, the piston head is arranged in the cylinder and provided with a center through hole, and the other end of the piston rod is located outside the cylinder and connected with the tube connector body. The front end of the cylinder is a front end socket matched with the piston rod, a gas vent is formed in the junction position of the front end socket and the cylinder, an inner threaded hole connected with the tube connector assembly is formed in the rear end of the cylinder, an annular end face corresponding to the tube connector assembly is arranged on the outer side of the inner threaded hole, and a V-shaped annular groove is formed in the annular end face. The tube connector assembly comprises a thread connecting part connected with the cylinder and a standard tube connector connected with a pipeline, the thread connecting part and the standard tube connector are connected into a whole. The piston head of the piston assembly comprises two annular grooves and two sealing rings installed on the annular grooves. The telescopic and rotatable metal tube connector is simple in structure, low in cost and reliable in work.
Description
Technical field
The invention belongs to the constituent elements of pneumatic gearing system, be specifically related to a kind of scalable rotatable pipe joint.
Background technique
In pneumatic gearing system, pipeline, pipe joint are conventional pneumatic elements, play the function that pneumatic gearing system each several part is coupled together.In the pneumatic system of elevated pressures (more than 3MPa), conventional pipeline is metallic hose, metal hard pipeline, and pipe joint is generally metal, and metallic material is generally stainless steel, aluminum alloy, titanium alloy.The internal layer of metallic hose is generally nonmetallic material and makes, and surface is comparatively coarse, and under identical pipeline internal diameter, the gas communication ability of metallic hose is significantly lower than the comparatively smooth metal hard pipeline of inwall.For guaranteeing the negotiability of gas element, in pneumatic gearing system, conventionally adopt metal hard pipeline, metallic pipe coupling.
Under specific operation, pneumatic gearing system and corresponding product are connected to metal hard pipeline, the ability that simultaneously requires this pipeline position to there is in the course of the work larger axial stretching (more than 10mm), rotate (as 360 °) around pipeline axis, for example air bag can produce larger axial stretching in inflation/deflation process, and follow definite shape distortion and produce rotation, when the metallic pipe coupling of pneumatic system and the air inlet connecting ozzle of air bag are connected, metallic pipe coupling need to possess scalable rotatable function.
Utility model patent CN2097939U pipe joint, utilizes the structural type of the waveform expansion and contraction pipe of plastic material making to realize the scalability at pipe joint position, with the operating function of expanding with heat and contract with cold of compensation conduit.Due to the narrow limitation of material and structural type, this pipe joint can not be for high pressure, and scalable scope is minimum, and can not rotate.The telescopic corrugated tube joint of utility model patent CN201320026726, adopts bellows to solve pipe coupling position because of the internal stress effect of expanding with heat and contract with cold, and causes the pipe coupling place problem that easily infiltration is leaked.Bellows can possess certain axial stretching, lateral displacement, angular displacement, but the scalable scope of this pipe joint is little, substantially can not rotate.Invention CN201210519022 flexible rotating expansion pipe joint, comprise link joint, positioning ring, caging bolt, locating flange, outer cylinder and inner cylinder tube, together with described link joint is welded and fixed with positioning ring, link joint and positioning ring are welded on inner cylinder tube, locating flange is welded on outer cylinder, caging bolt is connected between link joint and locating flange, and outer cylinder is fixedly connected with by gland nut with inner cylinder tube.In the situation that not affecting pump testing requirement and performance data and measuring, solve the time cost that closed loop test-bed pump testing pipeline rigid connection causes too high, financial cost is too high, and pump testing pipe arrangement is too much and the low professional difficult problem of pump testing working efficiency.This invention is to be used in assembly process, can not realize in the course of the work rotatable scalable.
Summary of the invention
The invention provides a kind of scalable rotatable metallic pipe coupling, object is to solve the axial scalable circumferential rotatable problem in high pressure resistant metal hard pipeline.
Technological scheme of the present invention: a kind of scalable rotatable metallic pipe coupling of the present invention comprises tube joint assembly and connecting pipe component, connecting pipe component comprises piston assembly and the cylinder barrel coordinating with it, one end of cylinder barrel coordinates with piston assembly slipper seal, and the other end of cylinder barrel is connected with tube joint assembly; Piston assembly comprises the piston rod of hollow tubular, and one end of piston rod is the piston head with central through bore that is placed in cylinder barrel, and the other end of piston rod is connected with pipe joint outside cylinder barrel.
The front end of described cylinder barrel is the front head coordinating with piston rod, front head and cylinder barrel intersection have exhaust port, the rear end of cylinder barrel is the interior threaded hole being connected with tube joint assembly, and there is the annular end face corresponding with tube joint assembly in interior threaded hole outside, has V-arrangement circumferential groove on annular end face.
Described tube joint assembly comprises be threaded part and the standard pipe joint being connected with pipeline that are connected with cylinder barrel being connected as a single entity.
The piston head of described piston assembly comprises the first circumferential groove and is arranged on the seal ring in the first circumferential groove.
The piston head of described piston assembly comprises the second circumferential groove and is arranged on the piston head guide ring in circumferential groove.
There is inner ring type groove the front head inner side of described cylinder barrel, establishes piston rod guide ring in inner ring type groove, establishes the second seal washer between the annular end face of the rear end of cylinder barrel and tube joint assembly.
The piston rod guide ring of establishing in described inner ring type groove adopts red copper to make, and thickness is 0.5mm～3mm.
The cross section of the V-arrangement circumferential groove of opening on the annular end face of the rear end of described cylinder barrel is equilateral triangle, and leg-of-mutton height is 0.3mm～0.8mm.
The ring of described piston head guide ring for not sealing, adopts material wear-resisting and that friction factor is lower to be made.
Described seal ring is general plug sealing ring, and when assembling, the U-shaped open end of general plug sealing ring is to high pressure admission end.
Advantage of the present invention:
Metallic pipe coupling of the present invention can extend in the course of the work+rotate, shrink+rotate, stretches+rotation, can realize and rotate in a circumferential direction 360 °.There is simple in structure, with low cost, reliable operation, feature applied widely, can meet comparatively severe vibration, shock environment requirement.Each parts machining good manufacturability of the present invention, has adopted the component of producing in batches as far as possible, is convenient to batch production.
Accompanying drawing explanation
Fig. 1 is the exploded view of the embodiment of the present invention;
Fig. 2 is the structural representation of embodiment of the present invention elongation state;
Fig. 3 is the structural representation of embodiment of the present invention contraction state;
Fig. 4 is the cylinder barrel schematic diagram of inventive embodiments;
Fig. 5 is the I place partial enlarged drawing of Fig. 4;
Fig. 6 is the exploded view of piston assembly;
Fig. 7 is piston head partial schematic diagram;
Fig. 8 is the general plug sealing ring part enlarged view of piston head.
Fig. 9 is the exploded view of tube joint assembly;
Figure 10 is that the present invention is applied in the schematic diagram in air bag device.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 6, a kind of scalable rotatable metallic pipe coupling of the present invention comprises tube joint assembly 4, the connecting pipe component that can be assembled together.Described connecting pipe component comprises piston assembly 1 and the cylinder barrel 2 coordinating with it, and one end of cylinder barrel 2 coordinates with piston assembly 1 slipper seal, and the other end of cylinder barrel 2 is connected with tube joint assembly 4; Piston assembly 1 comprises the piston rod 1a of hollow tubular, and piston rod 1a one end is the piston head 1b with central through bore that is placed in cylinder barrel 2, and the other end of piston rod 1a is connected with pipe joint 3 outside cylinder barrel 2.Piston rod 1a aperture is 14mm, and external diameter is 18.3mm, and the diameter of piston head 1b central through bore is 14mm, and axial length is 15mm.
As shown in Figure 4, Figure 5, the front end of described cylinder barrel 2 is the front head 2a with piston rod 1a Spielpassung, front head 2a and cylinder barrel 2 intersections have exhaust port 2b, exhaust port 2b is the tapped hole of 2 M5, gas in the cavity of the interior one end of cylinder barrel 2 can be drained into atmosphere, when piston assembly 1 is during in the interior motion of cylinder barrel 2, can not form the closed cavity that affects piston assembly 1 motion.The quantity of exhaust port, size design with reference to single-acting cylinder.
It is M27 * 1.5-7H that the rear end of described cylinder barrel 2 has the interior threaded hole 2c being connected with tube joint assembly 4, and there is the annular end face 2d corresponding with tube joint assembly 4 in internal thread through hole outside, has V-arrangement circumferential groove 2e on annular end face 2d.
There is inner ring type groove 2a1 the front head 2a inner side of described cylinder barrel 2, in inner ring type groove 2a1, establishes piston rod guide ring 5, between the annular end face 2d of the rear end of cylinder barrel 2 and tube joint assembly 4, establishes seal washer 6.
The dimensional accuracy of cylinder barrel 2 inner chambers and piston head 1b matching part is high, form and position tolerance is little, surface quality is high.Cylinder barrel 2 adopts stainless steel 1Cr18Ni9Ti to make, and internal diameter is 25mm(8 class precision), external diameter 33.5mm, axial length L is 72.5mm, the cylindricity 0.01mm of inwall; The roughness Ra of inwall is 1.6 μ m, meets the ability that is assemblied in piston assembly 1 rapid movement wherein.
The V-arrangement circumferential groove 2E cross section of opening on the annular end face 2d of the rear end of described cylinder barrel 2 is equilateral triangle, and leg-of-mutton height is 0.5mm.The effect of V-arrangement circumferential groove 2E is the sealing effect that improves seal washer 6.
The annular end face 2d of the rear end of described cylinder barrel 2 establishes seal washer 6, and seal washer 6 forms distortion after being compressed by tube joint assembly 4 at V-arrangement circumferential groove 2E position, obtain good sealing effect.Seal washer 6 adopts red copper to make, and thickness is 2mm, internal diameter 28mm, external diameter 33.5mm.
The piston head 1b of described piston assembly 1 and cylinder barrel 2 inner chambers are Spielpassung, and gap is 0.1mm～0.15mm.
The piston head 1b of described piston assembly 1 comprises the first circumferential groove and is arranged on the seal ring 1c in circumferential groove.The first circumferential groove is wide is 4.8mm, is 3.1mm deeply.
The piston head 1b of described piston assembly 1 comprises the second circumferential groove and is arranged on the piston head guide ring 1d in circumferential groove.The second circumferential groove is wide is 5.5mm, is 2.2mm deeply.
Described piston rod guide ring 5, the piston head guide ring 1d ring for not sealing, adopts the wear-resisting and lower teflon of friction factor to be made.The effect of piston rod guide ring 5, piston head guide ring 1d be for piston rod 1a, piston head 1b rapid movement be steadily, the gap size of fitting surface is stable, heating value is little.
As Fig. 7, Fig. 8, the general plug sealing ring of the special health of the M2 type of the preferred Te Ruibao of described seal ring 1c, according to the seal ring of cylinder barrel 2 internal diameter 25mm choice criteria series.The general plug sealing ring of the type can meet movement velocity and be not more than the operating mode that 15m/s, rotational speed are not more than 1m/s.When assembling, the U-shaped open end of general plug sealing ring is to high pressure admission end g.In the teflon annular part in general plug sealing ring WeiUXing cross section, be equipped with the high-performance sealed part of spring, the inwall laminating of teflon annular part and cylinder barrel 2; Spring provides elastic force, guarantees that the inwall of general plug sealing ring and cylinder barrel 2 is fully fitted, and obtains good sealing effect.
Fig. 9 is the exploded view of tube joint assembly 4, and described tube joint assembly 4 comprises the pipe joint 4b that adopts the part 4a that is threaded being connected with cylinder barrel 2 that welding manner becomes one to be connected with pipeline.The part that is threaded 4a is the external thread structure with flanged surface, and middle part has through hole, and its diameter is 14mm, and outside thread forms and is connected with the screw thread position of cylinder barrel 2, axially locating press seal packing ring 6 when flanged surface is used for realizing assembling tube joint assembly 4.Pipe joint is for having externally threaded connecting-tube nozzle, and the steel welding connecting-tube nozzle 14YC122-89 that 1Cr18Ni9Ti stainless steel is made, adopts welding manner to be connected with the part 4a that is threaded.Threaded joints is divided into the external thread structure with flanged surface, and middle part has through hole, and outside thread forms and is connected with the screw thread position of cylinder barrel, axially locating press seal pad when flanged surface is used for realizing assembling tube joint assembly.Pipe joint is preferentially selected the standard pipe joint of batch production.
Described sealing screw 7 is screw M5 * 6(GB/T67-2000),, when not working, the present invention is assemblied on the exhaust port 2b of cylinder barrel 2, to avoid fifth wheel to enter cylinder barrel 2 inside.
The metallic pipe coupling of the present embodiment can be realized elongation+spinfunction, and internal diameter 14mm(inside nominal diameter is slightly less than d, about 12mm), maximum axial extended travel is 57.5mm.When in the course of the work, stroke is not more than 57.5mm, all can work.The present invention can be applied in the operating mode that is not more than 30MPa.
The performance that the maximal dilation speed of pipe joint of the present invention, maximum rotative speed depend primarily on seal ring.Maximum retractable travel of the present invention depends on the movement travel of piston head in cylinder barrel.
Figure 10 is that the present invention is applied in the schematic diagram in air bag device: when the present invention is used for air bag device, gas cylinder 23 is connected to air bag device 22 by pipeline, stop valve 24, solenoid valve 25, scalable rotatable metallic pipe coupling 26 of the present invention, and the internal diameter of pipeline is 14mm.Air bag device is for maintaining static, but in inflation, deflation course, its suction port position can produce the axial displacement that is not more than 45mm, and axial motion speed is not more than 4m/s; Can produce the rotation that is not more than 25 ° simultaneously.Adopt scalable rotatable metallic pipe coupling to obtain pipeline and there is higher negotiability, can realize the fast aeration to air bag, meet usage requirement.
Claims (10)
1. a scalable rotatable metallic pipe coupling, comprise tube joint assembly and connecting pipe component, it is characterized in that: connecting pipe component comprises piston assembly (1) and the cylinder barrel (2) coordinating with it, one end of cylinder barrel (2) coordinates with piston assembly (2) slipper seal, and the other end of cylinder barrel (2) is connected with tube joint assembly (4); Piston assembly (1) comprises the piston rod (1a) of hollow tubular, and one end of piston rod (1a) is for being placed in the piston head with central through bore (1b) of cylinder barrel (2), and the other end of piston rod (1a) is connected with pipe joint (3) outside cylinder barrel (2).
2. scalable rotatable metallic pipe coupling according to claim 1, it is characterized in that: the front end of cylinder barrel (2) is the front head (2a) coordinating with piston rod (1a), front head (2a) has exhaust port (2b) with cylinder barrel (2) intersection, the rear end of cylinder barrel (2) is the interior threaded hole (2c) being connected with tube joint assembly (4), there is the annular end face (2d) corresponding with tube joint assembly (4) in interior threaded hole (2c) outside, has V-arrangement circumferential groove (2e) on annular end face (2d).
3. scalable rotatable metallic pipe coupling according to claim 1 and 2, is characterized in that: tube joint assembly (4) comprises be threaded part (4a) and the standard pipe joint (4b) being connected with pipeline that are connected with cylinder barrel (2) being connected as a single entity.
4. scalable rotatable metallic pipe coupling according to claim 1 and 2, is characterized in that: the piston head (1b) of piston assembly (1) comprises the first circumferential groove and is arranged on the seal ring (1c) in the first circumferential groove.
5. scalable rotatable metallic pipe coupling according to claim 1 and 2, is characterized in that: the piston head (1b) of piston assembly (1) comprises the second circumferential groove and is arranged on the piston head guide ring (1d) in the second circumferential groove.
6. scalable rotatable metallic pipe coupling according to claim 1 and 2, it is characterized in that: there is inner ring type groove (2a1) front head (2a) inner side of described cylinder barrel (2), piston rod guide ring (5) in inner ring type groove (2a1), establishes seal washer (6) between the annular end face (2d) of the rear end of cylinder barrel (2) and tube joint assembly (4).
7. scalable rotatable metallic pipe coupling according to claim 6, is characterized in that: the piston rod guide ring (5) of establishing in described inner ring type groove (2a1) adopts red copper to make, and thickness is 0.5mm～3mm.
8. scalable rotatable metallic pipe coupling according to claim 2, is characterized in that: the cross section of the V-arrangement circumferential groove (2e) of opening on the annular end face (2d) of the rear end of described cylinder barrel (2) is equilateral triangle, and leg-of-mutton height is 0.3mm～0.8mm.
9. scalable rotatable metallic pipe coupling according to claim 5, is characterized in that: the ring of described piston head guide ring (1d) for not sealing, adopts material wear-resisting and that friction factor is lower to be made.
10. scalable rotatable metallic pipe coupling according to claim 4, is characterized in that: described seal ring (1c) is general plug sealing ring, and when assembling, the U-shaped open end of general plug sealing ring is to high pressure admission end.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310475411.1A CN103511772B (en) | 2013-10-12 | 2013-10-12 | A kind of scalable rotatable metallic pipe coupling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310475411.1A CN103511772B (en) | 2013-10-12 | 2013-10-12 | A kind of scalable rotatable metallic pipe coupling |
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| CN103511772A true CN103511772A (en) | 2014-01-15 |
| CN103511772B CN103511772B (en) | 2016-06-08 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105836146A (en) * | 2016-05-04 | 2016-08-10 | 合肥江航飞机装备有限公司 | Corrugated pipe valve assembly for airplane fuel regulator |
| CN109430064A (en) * | 2018-11-16 | 2019-03-08 | 上海麦喀斯机械设备有限公司 | A kind of telescopic device for eliminating radial pull for milking machine disk middle spindle |
| CN112682608A (en) * | 2021-03-11 | 2021-04-20 | 天津金海通半导体设备股份有限公司 | Follow-up telescopic cylinder device for conveying high-temperature and low-temperature liquid |
| CN112682603A (en) * | 2020-12-21 | 2021-04-20 | 安徽蓝通科技股份有限公司 | Telescopic pipe head adapting to size of PVC pipe |
| CN113464751A (en) * | 2021-06-16 | 2021-10-01 | 中船动力研究院有限公司 | High-pressure oil pipe and high-pressure oil pipe assembling method |
| CN113685634A (en) * | 2020-05-19 | 2021-11-23 | 中国石油天然气股份有限公司 | Hot water circulation hose short circuit and beam-pumping unit |
| CN115978334A (en) * | 2022-12-19 | 2023-04-18 | 西南石油大学 | Pipeline voltage regulator device for oil gas warehousing and transportation |
| CN116267529A (en) * | 2023-04-19 | 2023-06-23 | 江苏省海洋资源开发研究院(连云港) | Telescopic water spraying device of large sprinkler |
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| US1911423A (en) * | 1931-05-25 | 1933-05-30 | George W Biller | Hose coupling |
| US5653476A (en) * | 1995-09-18 | 1997-08-05 | National Science Council Of Republic Of China | Leakproof rotary joint |
| CN1587778A (en) * | 2004-09-14 | 2005-03-02 | 葛文宇 | Pipeline connecting method for earth quake area |
| CN202140715U (en) * | 2011-06-08 | 2012-02-08 | 武汉海王机电工程技术公司 | Mechanical automatic regulation telescopic unit |
| CN203147107U (en) * | 2013-03-04 | 2013-08-21 | 浙江海亮股份有限公司 | Reliable sealing purging joint |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1911423A (en) * | 1931-05-25 | 1933-05-30 | George W Biller | Hose coupling |
| US5653476A (en) * | 1995-09-18 | 1997-08-05 | National Science Council Of Republic Of China | Leakproof rotary joint |
| CN1587778A (en) * | 2004-09-14 | 2005-03-02 | 葛文宇 | Pipeline connecting method for earth quake area |
| CN202140715U (en) * | 2011-06-08 | 2012-02-08 | 武汉海王机电工程技术公司 | Mechanical automatic regulation telescopic unit |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105836146A (en) * | 2016-05-04 | 2016-08-10 | 合肥江航飞机装备有限公司 | Corrugated pipe valve assembly for airplane fuel regulator |
| CN109430064A (en) * | 2018-11-16 | 2019-03-08 | 上海麦喀斯机械设备有限公司 | A kind of telescopic device for eliminating radial pull for milking machine disk middle spindle |
| CN113685634A (en) * | 2020-05-19 | 2021-11-23 | 中国石油天然气股份有限公司 | Hot water circulation hose short circuit and beam-pumping unit |
| CN112682603A (en) * | 2020-12-21 | 2021-04-20 | 安徽蓝通科技股份有限公司 | Telescopic pipe head adapting to size of PVC pipe |
| CN112682603B (en) * | 2020-12-21 | 2022-04-01 | 安徽蓝通科技股份有限公司 | Telescopic pipe head adapting to size of PVC pipe |
| CN112682608A (en) * | 2021-03-11 | 2021-04-20 | 天津金海通半导体设备股份有限公司 | Follow-up telescopic cylinder device for conveying high-temperature and low-temperature liquid |
| CN112682608B (en) * | 2021-03-11 | 2021-06-04 | 天津金海通半导体设备股份有限公司 | Follow-up telescopic cylinder device for conveying high-temperature and low-temperature liquid |
| CN113464751A (en) * | 2021-06-16 | 2021-10-01 | 中船动力研究院有限公司 | High-pressure oil pipe and high-pressure oil pipe assembling method |
| CN115978334A (en) * | 2022-12-19 | 2023-04-18 | 西南石油大学 | Pipeline voltage regulator device for oil gas warehousing and transportation |
| CN116267529A (en) * | 2023-04-19 | 2023-06-23 | 江苏省海洋资源开发研究院(连云港) | Telescopic water spraying device of large sprinkler |
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| CN103511772B (en) | 2016-06-08 |
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