A kind of Hermetical connecting structure of pipeTechnical field
The present invention relates to pipe joint field, especially a kind of Hermetical connecting structure of pipe.
Background technique
Currently, conventional pipelines connector, seals and needs sealing ring or other sealing elements, and first, use sealing element to be easy damageBad to cause leak, rubber seal is easy aging, and second, process flow is complicated, requirement on machining accuracy height.
Summary of the invention
Sealing ring is not needed the object of the present invention is to provide one kind or other seal assemblies, structure are simpler than background techniqueAnd process flow is simple, requirement on machining accuracy is low, greatly reduces the pipe sealing connection structure of processing cost.
The object of the present invention is achieved like this:
A kind of Hermetical connecting structure of pipe is spaced on the end of the connector including the connector being arranged in outside pipeIt is provided with multiple-sealed ring, decompression inclined-plane, decompression inclined-plane and decompression inclined-plane are provided on the inner ring surface of per pass sealing ringInclined direction is consistent；It is provided with locking cap outside connector, forms confession on the medial end portions outer surface of the connectorThe pincers point bulge loop that hydraulic tongs are puted forth effort；One end of the locking cap offers horn-like flaring structure, under preassembled condition, pipeSon is located in connector, and the external port of the flaring structure of locking cap is in contact with connector, when hydraulic tongs are had an effect while acting onOn locking cap and pincers point bulge loop, connector, which is extruded into locking cap after the flaring structure of locking cap, forms connector and pipeConnection sealing structure between son.
In the Hermetical connecting structure of above-mentioned pipe, the flaring structure be arranged on locking cap inner sidewall by outerTruncated cone-shaped packing face structure of the circumference towards the tilted formation of pipe, interior extend of the straight radial tubes of the packing face structure are gradually reduced.
In the Hermetical connecting structure of above-mentioned pipe, the sealing ring and decompression inclined-plane at least three, and it is adjacentSpacing between sealing ring is consistent.
In the Hermetical connecting structure of above-mentioned pipe, the sealing ring and decompression inclined-plane are three, including first subtractsInclined-plane, the second decompression inclined-plane and third is pressed to depressurize inclined-plane, wherein the tilt angle on the first decompression inclined-plane and the second decompression inclined-plane is smallTilt angle in third decompression inclined-plane.
In the Hermetical connecting structure of above-mentioned pipe, the tilt angle on the first decompression inclined-plane and the second decompression inclined-planeIt is 9-11 °, the tilt angle that third depressurizes inclined-plane is 12-14 °.
In the Hermetical connecting structure of above-mentioned pipe, there are two the pincers point bulge loop tools, shape between two pincers point bulge loopsAt the groove that can accommodate hydraulic tongs binding clip.
In the Hermetical connecting structure of above-mentioned pipe, the pincers outwardly extending both ends of point bulge loop are deformation extrudingPortion, the sealing ring are located on deformation press section.
The present invention is prominent and beneficial compared with prior art to be had the technical effect that
1, the phenomenon that bonding strength of the present invention is high, sealing effect is good, avoids leakage well after connecting pipe generation, usesService life is long.
2, the entire connection structure of the present invention is stablized, and keeps Pipe installing quick, economical, time saving, laborsaving.It can ensure simultaneouslyPipeline flows smoothly.
3, the technology of the present invention is simple and process flow is simple, and manufacturing procedure is few, and requirement on machining accuracy is low, greatly reduces and addsWork cost.
Detailed description of the invention
Fig. 1 is schematic perspective view of the invention.
Fig. 2 is structural schematic diagram of the invention.
Fig. 3 be A-A in Fig. 2 to structural schematic diagram.
Meaning represented by figure label:
1- pipe；2- connector；21- sealing ring；22- depressurizes inclined-plane；221 first decompression inclined-planes；
222- second depressurizes inclined-plane；223- third depressurizes inclined-plane；23- pincers point bulge loop；231- deformation press section；
24- groove；3- locking cap；31- flaring structure.
Specific embodiment
The invention will be further described combined with specific embodiments below:
It is as shown in Figs. 1-3: a kind of Hermetical connecting structure of pipe, including the connector 2 being arranged in outside pipe 1, the connectionIt is arranged at intervals with multiple-sealed ring 21 on the end of part 2, decompression inclined-plane 22 is provided on the inner ring surface of per pass sealing ring 21,Decompression inclined-plane is consistent with the inclined direction for depressurizing inclined-plane；Locking cap 3 is provided with outside connector 2, the connector 2The pincers point bulge loop 23 puted forth effort for hydraulic tongs is formed on medial end portions outer surface；One end of the locking cap 3 offers horn-likeFlaring structure 31, under preassembled condition, pipe 1 is located in connector 2, the external port and connection of the flaring structure 31 of locking cap 3Part 2 is in contact, and when hydraulic tongs are had an effect while acting on locking cap 3 and pincers point bulge loop 23, connector 2 passes through the expansion of locking cap 3The connection sealing structure formed between connector 2 and pipe 1 in locking cap 3 is extruded into after mouth structure 31.
The phenomenon that bonding strength of the present invention is high, sealing effect is good, avoids leakage well after connecting pipe generation, makesIt is long with the service life.The technology of the present invention is simple and process flow is simple, and manufacturing procedure is few, and requirement on machining accuracy is low, greatly reduces and addsWork cost.This structure is press-connected part 2 by locking cap 3, by the 21 clamping pipe 1 of multiple-sealed ring on connector 2, reachesThe effect of sealing and connection.
Preferably, the flaring structure 31 be arranged on 3 inner sidewall of locking cap from outer circumference surface to pipe introversionIt is oblique at truncated cone-shaped packing face structure, extend in the straight radial tubes of the packing face structure and be gradually reduced.
The entire connection structure of the present invention is stablized, and keeps Pipe installing quick, economical, time saving, laborsaving.
Preferably, the sealing ring 21 and decompression inclined-plane 22 at least three, and between adjacent sealing ring 21Spacing is consistent.
Preferably, the sealing ring 21 and decompression inclined-plane 22 are the three, including first decompression inclined-plane 221, secondIt depressurizes inclined-plane 222 and third depressurizes inclined-plane 223, wherein the tilt angle on the first decompression inclined-plane 221 and the second decompression inclined-plane 222 is smallTilt angle in third decompression inclined-plane 223.
Preferably, the tilt angle on the first decompression inclined-plane 221 and the second decompression inclined-plane 222 is 9-11 °, thirdThe tilt angle for depressurizing inclined-plane 223 is 12-14 °.
Preferably, hydraulic tongs can be accommodated by being formed between two pincers point bulge loops 23 there are two the tools of pincers point bulge loop 23The groove 24 of binding clip.
Preferably, the outwardly extending both ends of pincers point bulge loop 23 are deformation press section 231, the sealing ring21 are located on deformation press section 231.
The working principle of the invention: the outwardly extending both ends of pincers point bulge loop 23 are deformation press section 231, the shapeBecome press section 231 and enter locking cap 3 by the flaring structure 31 of locking cap 3 by force under the active force of hydraulic tongs, deformation squeezesThe sealing ring 21 thereon after being squeezed of portion 231 squeezes pipe 1, due to being provided with decompression inclined-plane 22, in installation process andBonding strength height, the sealing effect of product are good when being installed.
Above-described embodiment is only presently preferred embodiments of the present invention, is not limited the scope of the invention according to this, therefore: it is all according toThe equivalence changes that structure of the invention, shape, principle are done, should all be covered by within protection scope of the present invention.