CN202017836U - Stainless steel hard-seal pipe connector - Google Patents

Stainless steel hard-seal pipe connector Download PDF

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Publication number
CN202017836U
CN202017836U CN2011201156201U CN201120115620U CN202017836U CN 202017836 U CN202017836 U CN 202017836U CN 2011201156201 U CN2011201156201 U CN 2011201156201U CN 201120115620 U CN201120115620 U CN 201120115620U CN 202017836 U CN202017836 U CN 202017836U
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CN
China
Prior art keywords
stainless steel
joint
conical
nut
stainless
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Expired - Lifetime
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CN2011201156201U
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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 CN2011201156201U priority Critical patent/CN202017836U/en
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Publication of CN202017836U publication Critical patent/CN202017836U/en
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Abstract

The utility model discloses a stainless steel hard-seal pipe connector, which consists of a stainless steel connector main body, a stainless steel nut and a stainless steel sealing ring, wherein inner cavities on two end parts of the connector main body are respectively a conical surface, the conical surface extends inwards to form a cylindrical surface, so socket ports of two end parts of the connector main body can be formed, the diameter of the outer end of the conical surface is larger than the diameter of the inner end of the conical surface, two end parts of the connector main body are provided with outer threads, inner threads are arranged in a cavity of the nut, the nut is provided with an end cover with the middle part being perforated, the nut is connected with the threads on two ends of the connector main body, and the stainless steel sealing ring is installed in a cavity which is formed respectively between the socket ports on the two end parts of the connector main body and the inner cavity of the nut and the outer wall of a stainless steel pipe to be connected.

Description

The hard sealed pipe joint of a kind 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 ring, 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 innovation 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, 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, the sealing ring outer surface is plane or arc surface, and its internal surface is the cylndrical surface.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, advantage 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 stainless joint main body of hollow, stainless steel nut and stainless steel sealing ring are formed, the inner chamber at the two end part of described stainless steel joint for pipeline main body is a conical surface, this conical surface extension inwards is the cylndrical surface, constitute the joint socket at adapter body two end part, the outer end diameter of described conical surface is greater than its inner diameter, stainless joint main body two end part are provided with outside thread, be provided with internal thread in the described nut intracavity, this nut is provided with end cap, the end cap inner bottom part is a flat pattern, the end cap middle part has through hole, the internal thread of this stainless steel nut is connected with the outside thread at stainless joint main body two ends, at the inner chamber of the joint socket at stainless joint main body two end part and stainless steel nut with connect between the stainless steel pipe outer wall and in the formed cavity stainless steel sealing ring is housed, described stainless joint seal ring is a conic tube, its outer conical surface gradient β=0.1 0~ 8 0Angle, the inner chamber of this conic tube are the cylndrical surface, the thickness a=0.3 ~ 0.6mm of this conic tube the inner, gradient α=0.1 of described stainless joint main body joint socket conical surface 0~ 8 0Angle.
In the hard sealed pipe joint of same stainless steel, the outer conical surface gradient β of stainless steel sealing ring is more than or equal to the gradient α of stainless joint main body joint socket circular conical surface of inner wall.
Top, described stainless steel sealing ring outer end can be provided with the cylindrical skirt of annular projection.
The outer surface of described stainless steel sealing ring outer end is a conical surface, and the outer surface of its inner end is the cylndrical surface.
Compared with prior art, the utlity model has following beneficial effect:
(1) 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.In view of there not being 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 substantially horizontal extruding force that nut produces acts on seal ring, seal ring passes to the conical surface of adapter body joint socket to extruding force, and seal ring also is subjected to the reaction force of adapter body joint socket simultaneously, and this reaction force can be decomposed into horizontal component and axial thrust load.Because the gradient β of its seal ring conical surface of same pipe joint is slightly larger than the gradient α of adapter body joint socket conical surface, seal ring just can not enter joint socket smoothly like this, along with constantly tightening of nut, the reaction force of the axial thrust load that seal ring is subjected to constantly increases, make and in joint socket, get into when seal ring inwardly shrinks deformation, finally sealed ring major part enters in the joint socket, the outer wall conical surface gradient β deformation of seal ring is α, identical with the gradient of adapter body joint socket circular conical surface of inner wall, with adapter body two ends joint socket and seal ring with connect sealing fully between the stainless steel pipe, and being connect stainless steel pipe locking.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 harsh requirements 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 (state that nut is not tightened) 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 the sectional drawing of the 1st kind of seal ring 3, and ring outer surface is a conical surface, and ring top, outer end is provided with the cylindrical skirt of annular projection, and internal surface is the cylndrical surface.
Fig. 4 is the sectional drawing of the 2nd kind of seal ring 8, and ring outer surface about 2/3 is a conical surface, and all the other about 1/3 are the cylndrical surface, and the top, outer end is provided with the cylindrical skirt of annular projection, and the internal surface of sealing ring is the cylndrical surface.
Fig. 5 is the sectional drawing of the 3rd kind of seal ring 9, and ring outer surface is a conical surface, and internal surface is the cylndrical surface.
Fig. 6 is the sectional drawing of the 4th kind of seal ring 10, and ring outer surface about 2/3 is a conical surface, and all the other about 1/3 are the cylndrical surface, and internal surface is the cylndrical surface.
Embodiment
By following embodiment the utility model is further elaborated.
Referring to Fig. 1 ~ shown in Figure 2, 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 outer end of the inwall 5 of joint socket 4 is a conical surface, and the outer end diameter of this conical surface is greater than inner diameter, its gradient α=0.1 0~ 8 0Angle, this conical surface extension 6 inwards are the cylndrical surface.Nut is provided with internal thread in 2 chambeies, and screw thread is provided with tool withdrawal groove between its bottom, and the chamber inner bottom part is a flat pattern, and middle perforate becomes the end cap of nut 2, and the internal thread of this nut 2 is connected with the outside thread at adapter body 1 two ends.At the inner chamber of the joint socket 4 at adapter body 1 two ends and nut 2 with connect the seal ring 3 that is the conic tube shape is housed in the formed cavity between stainless steel pipe 7 outer walls, the internal surface of sealing ring 3 is the cylndrical surface, and its outer surface is a conical surface, gradient β=0.1 0~ 8 0Angle, the thickness a=0.3 ~ 0.6mm of this conic tube the inner for same pipe joint, requires β 〉=α, also can be provided with the cylindrical skirt 3-1 of annular projection at top, seal ring outer end, with for convenience detach and enhanced leaktightness ring intensity.When fastening nut 2, the substantially horizontal extruding force that nut 2 produces acts on seal ring 3, seal ring 3 passes to the conical surface of adapter body joint socket 4 to extruding force, and seal ring 3 also is subjected to the reaction force of adapter body joint socket 4 simultaneously, and this reaction force can be decomposed into horizontal component and axial thrust load.Because require the conical surface gradient β of the seal ring 3 of same pipe joint to be slightly larger than the conical surface gradient α of main body joint socket 4, so seal ring 3 can not enter joint socket 4 smoothly, along with constantly tightening of nut 2, the axial reaction force that seal ring 3 is subjected to constantly increases, make and in joint socket 4, get into when seal ring 3 inwardly shrinks deformation, finally sealed ring 3 major parts enter in the joint socket 4, the outer wall conical surface gradient β deformation of seal ring 3 is α, identical with the gradient of adapter body joint socket 4 circular conical surface of inner wall, with adapter body 1 two ends joint socket 4 and seal ring 3 with connect sealing fully between the stainless steel pipe 7, and stainless steel pipe 7 is locked.
In order to reach the technique effect of stainless steel sealing ring, also the outer surface of its outer end can be made as conical surface, the outer surface of its inner end is made as the cylndrical surface, referring to Fig. 3 ~ shown in Figure 6, wherein, Fig. 3 is a stainless steel sealing ring 3, and outer surface is a conical surface, internal surface is the cylndrical surface, and top, seal ring 3 outer end is provided with the cylindrical skirt 3-1 of annular projection.Fig. 4 is a stainless steel sealing ring 8, and outer surface about 2/3 is a conical surface, and all the other about 1/3 are the cylndrical surface, and internal surface is the cylndrical surface, and top, seal ring 8 outer end is provided with the cylindrical skirt 8-1 of annular projection.Fig. 5 is a stainless steel sealing ring 9, and outer surface is a conical surface, and internal surface is the cylndrical surface.Fig. 6 is a stainless steel sealing ring 10, and outer surface about 2/3 is a conical surface, and all the other about 1/3 are the cylndrical surface, and internal surface is the cylndrical surface.

Claims (4)

1. hard sealed pipe joint of stainless steel, it is characterized in that: this stainless steel joint for pipeline is by the stainless joint main body of hollow, stainless steel nut and stainless steel sealing ring are formed, the inner chamber at the two end part of described stainless joint main body is a conical surface, this conical surface extension inwards is the cylndrical surface, constitute the joint socket at adapter body two end part, the outer end diameter of described conical surface is greater than its inner diameter, stainless joint main body two end part are provided with outside thread, be provided with internal thread in the described nut intracavity, this nut is provided with end cap, the end cap inner bottom part is a flat pattern, the end cap middle part has through hole, the internal thread of this stainless steel nut is connected with the outside thread at stainless joint main body two end part, at the inner chamber of the joint socket at stainless joint main body two end part and stainless steel nut with connect between the stainless steel pipe outer wall and in the formed cavity stainless steel sealing ring is housed, described stainless steel sealing ring is a conic tube, its outer conical surface gradient β=0.1 0~ 8 0Angle, the inner chamber of this conic tube are the cylndrical surface, the thickness a=0.3 ~ 0.6mm of this conic tube the inner, the gradient α of described joint socket conical surface=0.1 0~ 8 0Angle.
2. the hard sealed pipe joint of stainless steel according to claim 1 is characterized in that: in the hard sealed pipe joint of same stainless steel, the outer conical surface gradient β of stainless steel sealing ring is more than or equal to the gradient α of stainless joint main body joint socket circular conical surface of inner wall.
3. the hard sealed pipe joint of stainless steel according to claim 1 is characterized in that: top, described stainless steel sealing ring outer end is provided with the cylindrical skirt of annular projection.
4. the hard sealed pipe joint of stainless steel according to claim 1 is characterized in that: the outer surface of described stainless steel sealing ring outer end is a conical surface, and the outer surface of its inner end is the cylndrical surface.
CN2011201156201U 2011-04-19 2011-04-19 Stainless steel hard-seal pipe connector Expired - Lifetime CN202017836U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011201156201U CN202017836U (en) 2011-04-19 2011-04-19 Stainless steel hard-seal pipe connector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011201156201U CN202017836U (en) 2011-04-19 2011-04-19 Stainless steel hard-seal pipe connector

Publications (1)

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CN202017836U true CN202017836U (en) 2011-10-26

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102116397A (en) * 2011-04-19 2011-07-06 杨伟津 Stainless steel hard-seal pipe joint
CN104500524A (en) * 2014-11-27 2015-04-08 何枫 Building-block-type high-strength pipe rod connecting device and frame using same
CN104896220A (en) * 2015-04-17 2015-09-09 柳州市乾阳机电设备有限公司 Pipe joint
CN105987241A (en) * 2015-01-30 2016-10-05 中国石油天然气集团公司 Pressure pipeline joint sealing device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102116397A (en) * 2011-04-19 2011-07-06 杨伟津 Stainless steel hard-seal pipe joint
CN104500524A (en) * 2014-11-27 2015-04-08 何枫 Building-block-type high-strength pipe rod connecting device and frame using same
CN104500524B (en) * 2014-11-27 2017-07-14 何枫 Building block system double-strength pipe rod attachment means and its shelf of application
CN105987241A (en) * 2015-01-30 2016-10-05 中国石油天然气集团公司 Pressure pipeline joint sealing device
CN105987241B (en) * 2015-01-30 2018-07-10 中国石油天然气集团公司 A kind of pressure piping joint sealing device
CN104896220A (en) * 2015-04-17 2015-09-09 柳州市乾阳机电设备有限公司 Pipe joint

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Granted publication date: 20111026