CN201925631U - Stainless steel hard-seal pipe connector - Google Patents

Stainless steel hard-seal pipe connector Download PDF

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Publication number
CN201925631U
CN201925631U CN2011200625048U CN201120062504U CN201925631U CN 201925631 U CN201925631 U CN 201925631U CN 2011200625048 U CN2011200625048 U CN 2011200625048U CN 201120062504 U CN201120062504 U CN 201120062504U CN 201925631 U CN201925631 U CN 201925631U
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CN
China
Prior art keywords
stainless steel
nut
connector
seal ring
inwardly
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Expired - Lifetime
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CN2011200625048U
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Chinese (zh)
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杨伟津
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杨伟津
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Priority to CN2011200625048U priority Critical patent/CN201925631U/en
Application granted granted Critical
Publication of CN201925631U publication Critical patent/CN201925631U/en
Anticipated expiration legal-status Critical
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Abstract

The utility model discloses a stainless steel hard-seal pipe connector, which can allow a pipe system to work safely under sealed conditions, is convenient for construction and operation, reduces the installation cost, and has the advantages of capability of being detached and repeated use, low-carbon and environmental friendliness, long service life, high temperature resistance, high pressure resistance, corrosion resistance, good anti-vibration performance, aging resistance, and the like. The stainless steel hard-seal pipe connector comprises a hollow connector body, a nut and a sealing ring, wherein the connector body is provided with an insertion port, external threads are arranged at the two ends of the connector body, an inwardly-inclined ports are arranged at the two ends of the insertion port, an inwardly-inclined port is arranged in the nut, an internal thread is arranged in the cavity, and the internal thread of the nut is connected with the external threads at the two ends of the connector body; the sealing ring is installed in the cavity formed among the inwardly-inclined ports at the two ends of the connector body, the inwardly-inclined port of the nut and the outer walls of stainless steel pipes to be connected; at least one ring-shaped groove is formed at the inner middle part of the sealing ring; the slope alpha of the inwardly-inclined ports at the two ends of the connector body ranges from 15 degrees to 25 degrees; and the slope beta of the inwardly-inclined port of the nut ranges from 25 degrees to 40 degrees.

Description

The hard sealed pipe joint of stainless steel
Technical field
The utility model relates to metal pipe and joint sealing interconnection technique field, the hard sealed pipe joint of particularly a kind of stainless steel.
Background technique
Existing metal pipe Placement is generally multiple Placements such as compression type, clamp-press type, FERRULETYPE, groove clamping hoop type.Although these Placements and special installation tool thereof are had nothing in common with each other, but a common feature is arranged all, be exactly all to need to utilize rubber-like sealing elastomer material (as raw meal belt, anaerobic adhesive, rubber figure, tetrafluoroethylene pad etc.) to fill tubing and gaps between pipe fittings, reach the effect of airtight or watertight.As time goes on, these rubber-like sealing materials can wear out or damage because of external environment factor (mainly being sunlight, oxygen, ozone, heat, water, electricity, mechanical stress, high energy radiation, industrial gas, seawater, salt fog, mould, bacterium, insect) influence, make the sealing effect inefficacy.Aging is a kind of irreversible variation, and it is the common fault of macromolecular material.In the pipe-line system of high safety requirement, can not use the rubber-like sealing elastomer material, pipe fitting must be welding with being connected of pipe fitting or be tightly connected firmly, to guarantee the safe operation of pipe-line system.Therefore, metal hard-sealing pipe joint easy to use, that stability is high is the development trend of pipe-line system.
At present use commonplace copper seal of tube joint on the market, be made up of adapter body, nut and seal ring, wherein adapter body and nut are the brass material, and seal ring is the red copper material.Described adapter body is provided with joint socket, and two ends are provided with outside thread, and the two ends of this joint socket are provided with interior angle.Be provided with interior angle in the described nut, be provided with internal thread in the chamber.The internal thread of this nut is connected with the outside thread at adapter body two ends, and at the interior angle of the interior angle at adapter body two ends and nut with connect in the cavity between the copper pipe outer wall seal ring is housed, sealing ring outside is plane or arc surface, and its inner face is the plane.Under the load effect of 30 kilogram forces, the Vickers hardness number of copper is 55, and stainless Vickers hardness number is 210, and stainless as can be seen hardness number is more than 3 times of copper, so under identical power effect, stainless deformation is little more a lot of than the deformation of copper.This design is to utilize the deformation of copper material seal ring to realize the technical requirements locking and seal, but copper is with respect to easily oxidation of stainless steel, and the Cuprum alloy of making joint and seal ring can discharge harmful matters such as lead element, so stainless steel is the material that relatively is fit to make durable pipe fitting at present.Through test of many times, after joint and seal ring material change stainless steel into by copper, can not tighten can appear in pipe fitting joint, the situation of bond stress deficiency and poor sealing, causes problems such as joint gets loose, leaks (gas leakage), anti-seismic performance reduction, can't reach the technical requirements of locking and sealing.
Summary of the invention
The purpose of this utility model is to provide a kind of stainless steel with material hard sealed pipe joint, it can make pipe-line system security seal operation, constructing operation is convenient, installation cost is cheap, and have dismantled and assembled repeated use, low-carbon environment-friendly, long service life, high temperature high voltage resistant, corrosion-resistant, anti-seismic performance is high, the unexistent advantage of other types joint such as anti-aging.
The technical solution that the utility model proposed is such: the hard sealed pipe joint of a kind of stainless steel, this stainless steel joint for pipeline is by the adapter body of hollow, nut and seal ring are formed, described adapter body is provided with joint socket, two ends are provided with outside thread, the two ends of this joint socket are provided with interior angle, be provided with interior angle in the described nut, the internal thread of this nut is connected with the outside thread at adapter body two ends, at the interior angle of the interior angle at described adapter body two ends and described nut with connect between the stainless steel pipe outer wall and in the formed cavity seal ring is housed, be provided with at least 1 annular groove in the middle of in the sealing ring, gradient α=15 of the interior angle at described adapter body two ends °-25 ° of angles, the gradient β of the interior angle of described nut=25 °-40 ° of angles.
The middle part is provided with the annular groove that the 1-4 bar is parallel to each other in the described seal ring.Described annular groove base thickness degree is the 40%-60% of sealing ring thickness, is beneficial to the stress and deformation of seal ring.The outer surface of described seal ring can be arc surface, also can be for outer cross section isosceles trapezoid face, and for arc surface, its radius of arc R=10-30mm, for the isosceles trapezoid face of outer cross section, its hypotenuse gradient γ=10 ° of-25 ° of angles.
Compared with prior art, the utlity model has following beneficial effect:
1, the stainless steel joint for pipeline that uses in the market, most of clamp-press type that uses, fraction uses compression type, FERRULETYPE, groove clamping hoop type etc. respectively, all is to utilize elastomeric material sealings such as raw meal belt, sealer, rubber and silica gel.Be heated, power, light, electricity, gas and condition influence such as liquid corrosion, bioerosion, problems such as wearing out can appear in this type of material, distortion cause leaking (gas leakage), working life is not long.Owing to do not have the hard sealed pipe joint of stainless steel in the market substantially, just become the object of stainless steel pipeline industry research and development with the hard sealed pipe joint of stainless steel of material.That the hard sealed pipe joint of stainless steel of the present utility model has is heat-resisting, the characteristics of power, light, electricity, gas and liquid corrosion, bioerosion, and whole tubing all is the stainless steel material with material, makes stainless steel pipeline system and stainless steel material basic identical working life.
2, all parts of hard sealed pipe joint of the present utility model all adopt the stainless steel material manufacturing, and its mechanical structure is reasonable, and seal ring deformation can produce enough stress lock sealing tubing and pipe joint body.When fastening nut, the interior angle angle of nut is big (25 ° of-40 ° of angles), produce stronger substantially horizontal extruding force and act on seal ring.Because the gap that is connect between stainless steel pipe and the joint socket inwall has only about 0.1mm, seal ring can not enter in this gap, and along with nut is constantly tightened, seal ring passes to extruding force the interior angle at adapter body two ends.Because the interior angle angle less (15 ° of-25 ° of angles) at adapter body two ends so its axial compression force rate that reacts on seal ring is bigger, and is provided with thin annular groove in the middle of in the seal ring, make seal ring generation deformation.The reaction force that this moment, seal ring produced is connect sealing fully between the stainless steel pipe with angle and seal ring in the adapter body two ends and quilt, and stainless steel pipe is locked.The hard sealed pipe joint of this stainless steel does not exist that conventional seal ring is aging, the sorrow of be full of cracks, do not exist copper sleeve because of disengaging harmful matters such as lead thereby not meeting the defective of the RoHS of European Union command request yet, and can bear conditions such as high temperature, high pressure, corrosion, make the safer health of stainless steel pipeline, reliability and durability.
3, adopt the hard sealed pipe joint of this stainless steel to carry out that stainless steel pipeline is installed or when transforming, operate easily, convenient and swift, sealing reliably; When the pipeline repacking needs the dismounting interface, unclamp nut and get final product.Except that seal ring can because of deformation destroyed, stainless steel nut, stainless joint main body, to be connect stainless steel pipe all reusable.
The hard sealed pipe joint of stainless steel of the present utility model can be widely used in the connection of stainless steel pipe, and as Stainless Steel Tube in the stainless steel pipeline and straight-through, elbow, threeway, four-way, reducing, and the internal and external screw thread joint of stainless steel plumbing etc. is tightly connected.
Description of drawings
Fig. 1 is the structural representation of an embodiment's of the utility model the hard sealed pipe joint of stainless steel.
Fig. 2 is the unfolded drawing (being connect stainless steel pipe does not draw) of the hard sealed pipe joint of stainless steel shown in Figure 1.
Fig. 3 is seal ring 3 sectional drawings, has an annular groove, and its outside is an arc surface.
Fig. 4 is seal ring 8 sectional drawings, has four annular grooves that are parallel to each other, and its outside is an arc surface.
Fig. 5 is seal ring 9 sectional drawings, has an annular groove, and its outer cross section is the isosceles trapezoid face.
Fig. 6 is seal ring 10 sectional drawings, has three annular grooves that are parallel to each other, and its outer cross section is the isosceles trapezoid face.
Embodiment
By following embodiment the utility model is further elaborated.
Referring to Fig. 1-shown in Figure 6, the hard sealed pipe joint of a kind of stainless steel is made up of stainless joint main body 1, stainless steel nut 2 and stainless steel sealing ring 3.The two ends of adapter body 1 are provided with outside thread and joint socket 4, and the two ends of joint socket 4 are provided with interior angle 6, its gradient α=15 ° of-25 ° of angles.Angle 5 in being provided with in the nut 2, its gradient β=25 ° of-40 ° of angles.The internal thread of nut 2 is connected with the outside thread of adapter body 1.At the interior angle 5 of the interior angle 6 at adapter body 1 two ends and nut 2 with connect between stainless steel pipe 7 outer walls and in the formed cavity seal ring 3 is housed, the middle part is provided with an annular groove 3-1 in the sealing ring 3, the outside of seal ring 3 is an arc surface, this radius of arc R=10-30mm.The thickness of seal ring 3 is 1mm, and its annular groove 3-1 bottom land thickness is 0.5mm.The outer cross section of seal ring 3 also can be the isosceles trapezoid face, the gradient γ of this isosceles trapezoidal hypotenuse=10 °-25 ° of angles.Circular groove can be provided with the 1-4 bar, referring to Fig. 3-shown in Figure 6, wherein, Fig. 3, Figure 4 shows that the outside is the seal ring 3,8 of arc surface, be respectively equipped with 1,4 annular grooves, Fig. 5, Figure 6 shows that outer cross section is the seal ring 9,10 of isosceles trapezoid, is respectively equipped with 1,3 annular grooves.

Claims (5)

1. hard sealed pipe joint of stainless steel, it is characterized in that: this stainless steel joint for pipeline is by the adapter body of hollow, nut and seal ring are formed, described adapter body is provided with joint socket, two ends are provided with outside thread, the two ends of this joint socket are provided with interior angle, be provided with interior angle in the described nut, this nut inner thread is connected with the outside thread at adapter body two ends, at the interior angle of the interior angle at described adapter body two ends and described nut with connect between the stainless steel pipe outer wall and in the formed cavity seal ring is housed, be provided with at least 1 annular groove in the middle of in the sealing ring, gradient α=15 of the interior angle at described adapter body two ends °-25 ° of angles, the gradient β of the interior angle of described nut=25 °-40 ° of angles.
2. the hard sealed pipe joint of stainless steel according to claim 1 is characterized in that: be provided with the annular groove that the 1-4 bar is parallel to each other in the middle of in the described seal ring.
3. the hard sealed pipe joint of stainless steel according to claim 2 is characterized in that: described annular groove base thickness degree is the 40%-60% of sealing ring thickness.
4. the hard sealed pipe joint of stainless steel according to claim 1 is characterized in that: the outer surface of described seal ring is an arc surface, its radius of arc R=10-30mm.
5. the hard sealed pipe joint of stainless steel according to claim 1 is characterized in that: the cross section of described seal ring is the isosceles trapezoid face, its hypotenuse gradient γ=10 ° of-25 ° of angles.
CN2011200625048U 2011-03-01 2011-03-01 Stainless steel hard-seal pipe connector Expired - Lifetime CN201925631U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011200625048U CN201925631U (en) 2011-03-01 2011-03-01 Stainless steel hard-seal pipe connector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011200625048U CN201925631U (en) 2011-03-01 2011-03-01 Stainless steel hard-seal pipe connector

Publications (1)

Publication Number Publication Date
CN201925631U true CN201925631U (en) 2011-08-10

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CN2011200625048U Expired - Lifetime CN201925631U (en) 2011-03-01 2011-03-01 Stainless steel hard-seal pipe connector

Country Status (1)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102207230A (en) * 2011-03-01 2011-10-05 杨伟津 Stainless steel hard sealed pipe joint
GB2513633A (en) * 2013-05-02 2014-11-05 Linde Ag Nozzle connection for carbon steel tank in special service
CN112283469A (en) * 2020-10-30 2021-01-29 中国航发湖南动力机械研究所 Pipeline connection sealing structure
CN112856059A (en) * 2021-01-07 2021-05-28 湖南天力瑞家新材科技股份有限公司 Pipe joint

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102207230A (en) * 2011-03-01 2011-10-05 杨伟津 Stainless steel hard sealed pipe joint
GB2513633A (en) * 2013-05-02 2014-11-05 Linde Ag Nozzle connection for carbon steel tank in special service
CN112283469A (en) * 2020-10-30 2021-01-29 中国航发湖南动力机械研究所 Pipeline connection sealing structure
CN112856059A (en) * 2021-01-07 2021-05-28 湖南天力瑞家新材科技股份有限公司 Pipe joint

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Granted publication date: 20110810

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