CN101649937B - Quick joint of corrugated pipe for gas - Google Patents
Quick joint of corrugated pipe for gas Download PDFInfo
- Publication number
- CN101649937B CN101649937B CN2009103067197A CN200910306719A CN101649937B CN 101649937 B CN101649937 B CN 101649937B CN 2009103067197 A CN2009103067197 A CN 2009103067197A CN 200910306719 A CN200910306719 A CN 200910306719A CN 101649937 B CN101649937 B CN 101649937B
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- Prior art keywords
- joint
- seal washer
- bellows
- corrugated pipe
- gripping sleeve
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- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention provides a quick joint of a corrugated pipe for gas, which belongs to the technical field of gas and solves the problems that the prior quick joint of the corrugated pipe needs deformation and has trouble in installation during quick installation. The quick joint of the corrugated pipe for gas comprises a corrugated pipe, a locking screw and a joint with a connection hole, wherein the corrugated pipe is sleeved with a seal washer and a clamping sleeve which can be clamped in the trough of the corrugated pipe, one end of the corrugated pipe penetrates through the clamping sleeve and the seal washer and then extends into the connection hole of the joint, one end of the locking screw is screwed with the outer side of the joint, and the other end of the locking screw is limited on the outer circumferential surface of the clamping sleeve through a limit structure; the inner wall of the connection hole is provided with a step 1, the inner end of the seal washer is provided with a tilt surface which can extend into the connection hole and support against on the step1, and the outer circumferential surface of the seal washer is provided with an annular groove. The quick joint of the corrugated pipe for gas has the advantages of favorable seal performance and quick installation.
Description
Technical field
The invention belongs to the gas technology field, relate to a kind of rapid pipe joint, particularly a kind of quick joint of corrugated pipe for gas.
Background technique
In daily life, combustion gas becomes in people's life indispensable.In using gas process, often the combustion gas pipe need be connected and dismantles.In order to realize quick operation, also to guarantee its sealing (will cause very serious consequence) simultaneously because combustion gas is revealed, people have designed the rapid pipe joint that various combustion gas is used, and some has also applied for patent.
For example, Chinese patent literature discloses a kind of resistant to elevated temperatures combustion gas metal bellows rapid pipe joint [patent No.: ZL200620107454.X], it comprises nut and is bolted in the joint of nut inner wall, be provided with a clamping ring in the nut, clamping ring is provided with to projecting inward clamping ring and pressure ring, clamping ring is located at the clamping ring right-hand member, pressure ring is positioned at the clamping ring left side, be provided with a connection chamber that matches with joint between clamping ring and the nut, also be provided with the gripping surface that matches on clamping ring right side and the joint, gripping surface can flatten first ripple of the ripple mouth of pipe, and it is tubaeform that the mouth of pipe is become, thereby forms sealing.Its shortcoming is its poor sealing, and also needs to connect the bellows structure distortion cumbersome, convenient inadequately in connection procedure.In addition, the somebody has done some improvement on this basis, invented a kind of modified model quick joint of corrugated pipe for gas [patent No.: ZL200720107106.7], it comprises nut and is bolted in the joint of nut inner wall, be provided with a clamping ring in the nut, clamping ring is provided with to projecting inward pressure ring, clamping ring and joint are provided with the gripping surface that matches, gripping surface on the joint is an end face of being located at a boss in joint left side, the boss outer rim is around being provided with nonmetal seal ring, the left side of this nonmetal seal ring exceeds the boss end face, gripping surface on clamping ring and the joint and nonmetal seal ring can cooperatively interact the ripple flattening at ripple mouth of pipe place, make mouth of pipe complanation shape, make nonmetal seal ring generation deformation form sealing thereby push nonmetal seal ring.Though efficiently solve the bad shortcoming of sealing effect, still exist simultaneously when mounted and need connect after the structure generation deformation with bellows, it still is cumbersome, quick inadequately installing.
Summary of the invention
The objective of the invention is to have the problems referred to above at existing technology, proposed a kind of excellent sealing of its rapid pipe joint that can guarantee and to have realized its quick mounting and dismounting again, also do not needed simultaneously structures such as bellows are done the quick joint of corrugated pipe for gas that deformation is handled.
Purpose of the present invention can realize by following technical proposal: a kind of quick joint of corrugated pipe for gas, comprise bellows, locking nut and joint with attachment hole, be arranged with seal washer and the gripping sleeve that can be buckled in the bellows trough on the described bellows, one end of bellows interted above-mentioned gripping sleeve and seal washer successively and extend in the attachment hole of joint, the outer end of described seal washer is resisted against on the gripping sleeve, described locking nut one end is bolted in the outside of joint, the other end is limited on the outer circumferential face of gripping sleeve by a limit structure, it is characterized in that: the inwall of described attachment hole is provided with step one, the inner of described seal washer is provided with inclined-plane and this inclined-plane and can extend in the attachment hole and be resisted against on the above-mentioned step one, and the outer circumferential face of seal washer is provided with annular groove.
In use, on the working end of bellows, earlier locking nut is inserted in the bellows from the working end of bellows, then gripping sleeve is buckled in the trough of bellows working end, install to the seal washer cover on the bellows working end again and its outer end is resisted against on the gripping sleeve, the inner end face of bellows working end end face and seal washer or stretch out the inner segment distance of seal washer can.Seal washer the inner is plugged into along with the bellows working end in the attachment hole of joint, and the inclined-plane on seal washer the inner abuts on the step one on the attachment hole inwall.At last locking nut is threaded on the outside of joint, when the continuous screw thread of locking nut was screwed into the outside of joint, locking nut can be limited on the outer circumferential face of gripping sleeve by limit structure, and this moment, locking nut was screwed on the outside of joint.Locking nut is tightened by the continuous spiral of worm structure, it produces the active force that moves toward joint attachment hole direction to gripping sleeve, gripping sleeve with this force transmission on bellows and seal washer, inclined-plane on seal washer the inner will be connected step two on the inwall of hole toward interior move and push generation deformation and make on its outer circumferential face that is attached to bellows tightly and the step two, effectively avoided combustion gas to leak the space between seal washer and bellows, attachment hole inwall respectively.Annular groove on the seal washer outer circumferential face also is squeezed and makes the space of its groove diminish simultaneously, according to the degree of being squeezed, the size that the space of annular groove is extruded is also different, can regulate the deformation degree of the inner ramp of seal washer so automatically, guarantee that seal washer can have good sealing in the course of the work.
In above-mentioned a kind of quick joint of corrugated pipe for gas, the outer circumferential face of described seal washer is positioned at the annular groove place and is provided with step two, and step two can be resisted against on the end end face of joint, and described annular groove is between step two and above-mentioned inclined-plane.
When locking nut was tightened by the continuous spiral of worm structure, the step two on the seal washer will be resisted against the secondary seal that forms on the end face of joint between seal washer and the joint more tightly.
In above-mentioned a kind of quick joint of corrugated pipe for gas, the inwall of described gripping sleeve is provided with several to projecting inward pressure ring, and described pressure ring can be buckled in the trough of bellows.
Pressure ring is buckled in can limit bellows moving axially in the course of the work on the bellows.
In above-mentioned a kind of quick joint of corrugated pipe for gas, described limit structure comprise on locking nut one end to projecting inward retaining along one and gripping sleeve its be resisted against the retaining that outwards protrudes on that end of seal washer along two, described retaining can block retaining along two along one.
Limit structure can be spacing to locking nut, makes it can not continue to move forward, can apply the active force that moves toward the attachment hole direction to gripping sleeve and bellows etc. by the limit structure locking nut simultaneously.
In above-mentioned a kind of quick joint of corrugated pipe for gas, its inner inclined-plane just was positioned on the crest of bellows when described seal washer was resisted against gripping sleeve when its outer end.
When no matter, as long as when the outer end of seal washer is resisted against gripping sleeve, the inclined-plane on seal washer the inner is positioned on the crest of bellows with regard to one, this be seal washer its be enclosed within the length on the bellows and the determining positions of gripping sleeve upper press ring.The trough that can avoid inclined-plane on seal washer the inner in the course of the work to be arranged in bellows like this makes the sealing of seal washer reduce greatly.
In above-mentioned a kind of quick joint of corrugated pipe for gas, also be provided with step three on the described attachment hole inwall, this step three is positioned at the rear of step one.
Step three can carry out spacing to the working end of stretching into the bellows in the attachment hole.
In above-mentioned a kind of quick joint of corrugated pipe for gas, described bellows outer circumferential face is coated with plastic sheath.
Plastic sheath can prevent that extraneous water or dust from entering into the reduction that whole rapid pipe joint causes working life.
Compared with prior art, this quick joint of corrugated pipe for gas has following several advantage:
1, this quick joint of corrugated pipe for gas locking nut by worm structure continuous spiral tighten the inclined-plane that can make on seal washer the inner and be connected step two on the inwall of hole and push and produce deformation and make on its crest that is attached to bellows tightly and the step two, improved the sealing of seal washer greatly.
2, the annular groove on the outer circumferential face of seal washer can make inclined-plane on seal washer the inner regulate it at work automatically to be extruded and to produce the deformation degree, make seal washer can guarantee its efficient sealed property always.
3, the step two on the outer circumferential face of seal washer is resisted against on the end end face of joint and forms secondary seal, has improved the sealing effect of total.
4, this quick joint of corrugated pipe for gas simple in structure, install fast and in installation process, do not need bellows etc. is done extra deformation process.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is an explosive view of the present invention.
Among the figure, 1, locking nut; 11, retaining is along one; 2, joint; 21, attachment hole; 22, step one; 23, step three; 3, bellows; 31, trough; 32, crest; 4, gripping sleeve; 41, pressure ring; 42, retaining is along two; 5, seal washer; 51, inclined-plane; 52, annular groove; 53, step two; 6, plastic sheath.
Embodiment
Below be specific embodiments of the invention and in conjunction with the accompanying drawings, technological scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As illustrated in fig. 1 and 2, this quick joint of corrugated pipe for gas comprises locking nut 1, bellows 3, gripping sleeve 4, seal washer 5 and has the joint 2 of attachment hole 21, one end of locking nut 1 is provided with to projecting inward retaining along 1, and gripping sleeve 4 inwalls are provided with a pressure ring 41 and it is provided with the retaining of outside protrusion along 2 42 near seal washer 5 those ends.The inner of seal washer 5 is provided with inclined-plane 51, and its outer circumferential face is provided with step 2 53 and annular groove 52, and annular groove 52 is between step 2 53 and inclined-plane 51 and adjacent with step 2 53, and attachment hole 21 inwalls are provided with step 1 and step 3 23.When this quick joint of corrugated pipe for gas being assembled use, earlier the working end of locking nut 1 from bellows 3 is nested into the bellows 3, again the pressure ring on the gripping sleeve 4 41 is buckled on the trough 31 on bellows 3 working ends, then seal washer 5 being packed into bellows 3 and its outer end is resisted against on the gripping sleeve 4, inclined-plane 51 on this moment seal washer 5 the inners just is positioned on the crest 32 on bellows 3 working ends, again gripping sleeve 4 on bellows 3 and the bellows 3 and seal washer 5 together are inserted in the attachment hole 21 of joint 2, this moment, the step 2 53 on the seal washer 5 just was resisted against on the end face of joint 2, and the inclined-plane 51 on its seal washer 5 the inners just is resisted against on the step 1 on attachment hole 21 inwalls.At last locking nut 1 and joint 2 screw threads are tightened, the retaining on the locking nut 1 is resisted against the retaining of gripping sleeve 4 along also spacing along 2 42 by retaining on 2 42 along 1.Be coated with plastic sheath 6 on bellows 3 outer circumferential faces but be not coated with plastic sheath 6 on the working end of bellows 3.
In use, with bellows 3 and install seal washer 5 on bellows 3 and gripping sleeve 4 etc. is plugged in the attachment hole 21 of joint 2 together, step 2 53 on the seal washer 5 abuts on the end face of joint 2, and the inclined-plane 51 on seal washer 5 the inners is resisted against on the step 1 on attachment hole 21 inwalls.When locking nut 1 is threaded the retaining of clamped cover 4 along 2 42 spacing backs and when continuing to tighten with joint 2 screw threads with joint 2, locking nut 1 can produce active forces that move in the attachment hole 21 to gripping sleeve 4 and bellows 3 and seal washer 5.Inclined-plane 51 on seal washer 5 the inners makes the step 1 on attachment hole 21 inwalls moving above inclined-plane 51 on the inclined-plane 51 be subjected to the active force that moves in attachment hole 21 after, inclined-plane 51 can make inclined-plane 51 be resisted against tightly on the crest 32 and step 1 of bellows 3 in generation deformation under the further extruding of step 1, makes that combustion gas is difficult for leaking the space between seal washer 5 and bellows 3 and seal washer 5 and step 1 respectively.51 its spaces when being squeezed can diminish annular groove 52 on the inclined-plane, push severely more, and it is more little that the space becomes, and annular groove 52 can be regulated the degree of inclined-plane 51 deformation automatically, makes the sealing effect on inclined-plane 51 can guarantee its optimum state always.Simultaneously the step 2 53 on seal washer 5 outer circumferential faces also can be at seal washer 5 its be subjected to generation deformation under the effect of the active force that in attachment hole 21, moves and make the secondary seal between the formation seal washer 5 and joint 2 on its end face that tightly is resisted against joint 2, improved the sealing of whole device greatly.When needs disassemble it, only need locking nut 1 screw thread from joint 2 outsides is back-outed, then gripping sleeve 4, bellows 3 and seal washer 5 are pulled out from the attachment hole 21 of joint 2 and got final product, install, dismounting is all very convenient, quick, simple, and do not need that bellows 3 etc. is done deformation and handle.
Bellows 3 in the present embodiment is a metal bellows 3, can also make for nonmetallic material such as plastics certainly.Gripping sleeve 4 is made for nylon or plastic materials, also can make for other materials, and seal washer 5 is made for rubber material, and locking nut 1 and joint 2 are metallic material and make.
Specific embodiment described herein only is that the present invention's spirit is illustrated.The technician of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper used morely locking nut 1, retaining along 1, joint 2, attachment hole 21, step 1, step 3 23, bellows 3, trough 31, crest 32, gripping sleeve 4, pressure ring 41, retaining along 2 42, terms such as seal washer 5, inclined-plane 51, annular groove 52, step 2 53, plastic sheath 6, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; They are construed to any additional restriction all is contrary with spirit of the present invention.
Claims (4)
1. quick joint of corrugated pipe for gas, comprise bellows (3), locking nut (1) and have the joint (2) of attachment hole (21), be arranged with seal washer (5) on the described bellows (3) and can be buckled in gripping sleeve (4) in bellows (3) trough (31), one end of bellows (3) interted above-mentioned gripping sleeve (4) and seal washer (5) successively and extend in the attachment hole (21) of joint (2), the outer end of described seal washer (5) is resisted against on the gripping sleeve (4), described locking nut (1) one end is bolted in the outside of joint (2), the other end is limited on the outer circumferential face of gripping sleeve (4) by a limit structure, it is characterized in that: the inwall of described attachment hole (21) is provided with step one (22), the inner of described seal washer (5) is provided with inclined-plane (51) and this inclined-plane (51) and can extend in the attachment hole (21) and be resisted against on the above-mentioned step one (22), and the outer circumferential face of seal washer (5) is provided with annular groove (52); The inwall of described gripping sleeve (4) is provided with several to projecting inward pressure ring (41), described pressure ring (41) can be buckled in the trough (31) of bellows (3), and its inner inclined-plane (51) just was positioned on the crest (32) of bellows (3) when described seal washer (5) was resisted against gripping sleeve (4) when its outer end; Described limit structure comprise on locking nut (1) one end to projecting inward retaining along one (11) and gripping sleeve (4) its be resisted against the retaining that outwards protrudes on that end of seal washer (5) along two (42), described retaining can block retaining along two (42) along one (11).
2. a kind of quick joint of corrugated pipe for gas according to claim 1, it is characterized in that, the outer circumferential face of described seal washer (5) is positioned at annular groove (52) and locates to be provided with step two (53), step two (53) can be resisted against on the end end face of joint (2), and described annular groove (52) is positioned between step two (53) and the above-mentioned inclined-plane (51).
3. a kind of quick joint of corrugated pipe for gas according to claim 1 and 2 is characterized in that, also is provided with step three (23) on described attachment hole (21) inwall, and this step three (23) is positioned at the rear of step one (22).
4. a kind of quick joint of corrugated pipe for gas according to claim 1 and 2 is characterized in that, described bellows (3) outer circumferential face is coated with plastic sheath (6), is not coated with plastic sheath (6) on the working end of described bellows (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103067197A CN101649937B (en) | 2009-09-08 | 2009-09-08 | Quick joint of corrugated pipe for gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103067197A CN101649937B (en) | 2009-09-08 | 2009-09-08 | Quick joint of corrugated pipe for gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101649937A CN101649937A (en) | 2010-02-17 |
| CN101649937B true CN101649937B (en) | 2011-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103067197A Expired - Fee Related CN101649937B (en) | 2009-09-08 | 2009-09-08 | Quick joint of corrugated pipe for gas |
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| Country | Link |
|---|---|
| CN (1) | CN101649937B (en) |
Families Citing this family (9)
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| CN103104768B (en) * | 2013-02-05 | 2015-08-19 | 杭州万全金属软管有限公司 | Fuel gas transmission stainless steel ripple hose connection device |
| CN105020513A (en) * | 2014-04-17 | 2015-11-04 | 虞建永 | Stainless steel corrugated pipe quick connector |
| CN105006784B (en) * | 2015-06-26 | 2017-09-29 | 宁波中车时代传感技术有限公司 | Corrugated flexible hose seal nipple |
| CN106090511A (en) * | 2016-08-05 | 2016-11-09 | 洛阳双瑞特种装备有限公司 | A kind of clamped-in style attachment structure for titanium bellows expansion joint |
| US10539257B2 (en) * | 2017-01-27 | 2020-01-21 | Omega Flex Inc. | Fitting for medical piping system |
| CN110375129A (en) * | 2019-08-23 | 2019-10-25 | 杨东旭 | Combustion gas Green's crossover sub |
| CN113069655B (en) * | 2021-03-31 | 2022-08-16 | 张琳 | Inhalation type anesthesia equipment for anesthesia department |
| CN114165171A (en) * | 2021-12-10 | 2022-03-11 | 贵州航天凯山石油仪器有限公司 | Down-hole instrument trip blade connecting structure |
| CN114811215A (en) * | 2022-03-30 | 2022-07-29 | 无锡金羊管件有限公司 | Detachable quick connector for connecting gas corrugated pipe with meter |
-
2009
- 2009-09-08 CN CN2009103067197A patent/CN101649937B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101649937A (en) | 2010-02-17 |
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Granted publication date: 20110420 Termination date: 20170908 |
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| CF01 | Termination of patent right due to non-payment of annual fee |