CN203628089U

CN203628089U - Seal connecting structure of pipelines

Info

Publication number: CN203628089U
Application number: CN201320701207.2U
Authority: CN
Inventors: 陈建林
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-11-08
Filing date: 2013-11-08
Publication date: 2014-06-04
Anticipated expiration: 2023-11-08

Abstract

The utility model discloses a seal connecting structure of pipelines, and relates to a thin-wall stainless steel male pipe and a header pipe which are relatively connected. A circular column-shaped sealing ring is arranged on the outer wall of a male pipe connecting section; the height of a circular column corresponds to the breadth of the sealing ring and is larger than 8 mm; compression rings in a radial inward shrinking shape are arranged on the overlapped pipe wall on the two side edges of the sealing ring in the sleeve-joint state of the two pipelines, and clamp rings with non-circular polygonal radial sections are arranged in the positions having distances with the outer sides of the compression rings; and the sealing ring adopts polytetrafluoroethylene or is formed by coating an anaerobic adhesive directly. With the application of the technical scheme, the fastening degree of the pipeline seal connection is greatly improved, the relative rotation of the pipelines after compression joint is thoroughly prevented, the initial performance of a seal filling material is guaranteed, popularization and application of the thin-wall stainless steel water pipe are facilitated, the skill requirement for a mounting operator are reduced, convenient operation of a common mounting worker is facilitated, and the assembling quality is guaranteed.

Description

The Hermetical connecting structure of pipeline

Technical field

The utility model relates to a kind of scheme that is tightly connected of thin-wall stainless steel, relates in particular to the linkage structure that the durability significantly extends and connection sealing can be more firm.

Background technique

Along with the continuous progress of science and technology; the thin-wall stainless steel plumbing works epoch arrive; it is widely used in the pipe-line systems such as all kinds of enterprises and institutions, public infrastructure development, household drinking water, and may there is the tubing of slight toxic and side effect in alternative conventional P VC tubing etc.And the inevitable requirement adjustment in the time that comb is arranged of thin-wall stainless steel water pipe flows to and need to continue, joint sealability and the survivability of pipeline, be the important indicator that determines thin-wall stainless steel water pipe stability in use.

Connect and should be used for from the pipeline of existing routine, mainly comparatively conventional by two kinds of linkage structures, be respectively that card presses connection to press and be connected with ring.As shown in Figure 1 to Figure 3, be that tradition ring is pressed the embodiment's generalized section connecting.In figure, these public affairs are managed 1 linkage section outer race and are connected to wider rubber ring 31, and female pipe 2 linkage sections are socketed on rubber ring 31 outsides again, then be respectively equipped with and be the radially round clasp of recessed shape at the coincidence tube wall place of rubber ring 31 both sides of the edge, make rubber ring completely, substantially be filled between two round clasps with this.This ring press connect, level vertical to pipeline require relatively low, because its seal with elastometic washer area is larger, but this connection has fatal defect---after crimping, axially can rotate (as shown in Figure 3), in practice of construction, workman's technology and quality are uneven, sometimes the angle crimping of a pipeline does not put in place, otherwise pipeline scrap weight, or rotate pipe angle.And installer selects rotated pipe angle to get in order to seek the material-saving that saves time substantially, be difficult for like this being found by management, even pressure measurement at that time also can not leak, but pipeline rubber ring in the time of rotation angle is understood deformation damage, has buried the hidden danger of leaking from now on.Be subject to the impact of chemicals in water temperature, hydraulic pressure, water hammer, water, rubber ring is also constantly aging throughout the year, at this moment rotation place seriousization of just can leaking gradually.

Again please as shown in Figure 4 and Figure 5, be that legacy card is pressed the top generalized section of the embodiment who connects while normally using and after compressive deformation.In figure, these public affairs are managed 1 linkage section outer race and are connected to an O type rubber ring 32, after female pipe 2 linkage sections are socketed on it, are pressed into the polygonal snap ring of non-circle and arc ring closing in again by special tool card, and the sectional shape of snap ring as shown in Figure 8.In actual applications, as long as this card is pressed and is connected when mounted horizontal or vertical lack of standardization or artificially bending, O type rubber ring unbalance stress in pipeline can be out of shape impaired, arc ring closes up and ftractures, even if surveying at that time hydraulic pressure can not leak, but owing to being subject to all the year round the impact of chemical substance in water temperature, hydraulic pressure, water hammer and water, the accelerated ageing on the impaired basis of distortion of O type rubber ring, just can start to leak from damaged points after 5-10.

, no matter from product structure itself or workman's fitting operation aspect, all there is the leak hidden danger of thin-wall stainless steel water pipe in the using process less than 8 years in the linkage structure of above two kinds of existing pipelines and method.Relatively the service life of building, this time is obviously too short.And for the house of interior decoration, water pipe maintenance certainly will cause the destruction to finishing, makes user suffer further loss.All of these visible, how to make good use of the advantage of thin-wall stainless steel water pipe durability, its pipe connecting structure and method are critical problems to be solved, and indented material is done obviously well not enough.

Summary of the invention

In view of the defect that above-mentioned prior art exists, the purpose of this utility model is the Hermetical connecting structure that proposes a kind of pipeline, realizes the performance advantage of amplitude peak performance thin-wall stainless steel water pipe.

Above-mentioned purpose of the present utility model, to be achieved by the following technical programs: the Hermetical connecting structure of pipeline, relate to the male pipe of thin-wall stainless steel and female pipe of relative connection, it is characterized in that: the seal ring that is provided with annulus cylindricality at the outer wall of public pipe linkage section, the breadth of the corresponding seal ring of the height of annulus post and be greater than 8mm, is respectively equipped with at the coincidence tube wall place of seal ring both sides of the edge under two pipeline socket states and is the pressure ring of recessed shape radially and the pressure ring outside segment distance of being separated by and is provided with radial cross section and is the polygonal snap ring of non-circle.

Further, described snap ring is Hexagon snap ring.

Further, described seal ring is teflon sleeve, and wall thickness is 0.8mm ± 0.05mm.

Further, described seal ring is the expanded PTFE that is wound in public pipe linkage section outer wall, and winding thickness is 0.8mm ± 0.05mm.

Further, described seal ring is the anaerobic adhesive that is coated on public pipe linkage section outer wall, under anaerobic adhesive and tube metal solidifying and setting state, is annulus column construction.

Remarkable result after technical solutions of the utility model application implementation is: seal by adopting the seal ring of wide cut annulus cylindricality to substitute traditional rubber ring, and the two kinds of traditional linkage structures of learning from other's strong points to offset one's weaknesses form the linkage structure that card pressure combines with ring pressure, greatly improve the fastening degree that seal for pipe joints connects, thoroughly having stopped the pipeline after crimping rotates relatively, ensure the initial performance that material is filled in sealing, reduce the technical ability requirement to installation exercise personnel, be conducive to common installer's operation readiness and guarantee attaching quality, and be conducive to the universal of thin-wall stainless steel water pipe.

Accompanying drawing explanation

Fig. 1 is that tradition ring is pressed the top generalized section before the embodiment's crimping connecting.

Fig. 2 is that tradition ring is pressed the top generalized section after the embodiment's crimping connecting.

Fig. 3 is the generalized section at the A-A place of Fig. 2.

Fig. 4 is that legacy card is pressed the top generalized section of the embodiment who connects while normally using.

Fig. 5 is that legacy card is pressed the top generalized section after the embodiment's stress deformation connecting.

Fig. 6 is the top generalized section of the utility model one preferred embodiment crimping.

Fig. 7 is the top generalized section of another preferred embodiment crimping of the utility model.

Fig. 8 is the generalized section at C-C place in B-B place and Fig. 6, Fig. 7 in Fig. 5.

Embodiment

Below just accompanying drawing in conjunction with the embodiments, is described in further detail embodiment of the present utility model, so that technical solutions of the utility model are easier to understand, grasp.

The utility model researcher is engaged in water pipe attaching industry for many years, at work time, have and receive seeking help that Duo Jia unit leaks about water pipe, observe and consult on well-known expert's in the industry basis being in the action, sum up the hidden danger that two kinds of traditional linkage structures and method exist, then explore to learn from other's strong points to offset one's weaknesses and be combined into brand-new linkage structure and connecting means.Particularly, get the advantage that " card is pressed and connected " Hexagon card is pressed, get " ring press connect " advantage that sealing area is large, mend easily aging deficiency of seal with elastometic washer, replace with teflon sleeve and two kinds of seal connecting methods of anaerobic adhesive (cylindrical component special agent admittedly).Wherein teflon is universally acknowledged best Sealing, and every physical and chemical index is excellent; And anaerobic adhesive is also relative better with the every physical and chemical index after metal-cured moulding, one of optional model is LK680, but never only limits to this one model.

From structure characteristic Hermetical connecting structure of the present utility model, relate to the male pipe of thin-wall stainless steel and female pipe of relative connection.Conventionally be understandable that: the external diameter of male pipe linkage section is less than the internal diameter of female pipe linkage section.As feature structure, be provided with the seal ring of annulus cylindricality at the outer wall of public pipe linkage section, the breadth of the corresponding seal ring of the height of annulus post and be greater than 8mm, is respectively equipped with at the coincidence tube wall place of seal ring both sides of the edge under two pipeline socket states that to be a be separated by segment distance and radial cross section of the pressure ring that radially inside contracts and pressure ring outside be the polygonal snap ring of non-circle.

As shown in Figure 6, from preferred embodiment of the utility model: above-mentioned seal ring is teflon sleeve 33, when pipeline is not pressed by card, the wall thickness of teflon sleeve is 0.8mm ± 0.05mm, after two pipeline sockets, carry out crimping with special clamp instrument respectively at the coincidence tube wall place of seal ring both sides of the edge, formation is the pressure ring 4 radially inside contracting, and it is the polygonal snap ring of non-circle that the segment distance of being separated by pressure ring 4 outsides forms radial cross section simultaneously.。In this linkage structure, adopt Hexagon snap ring, as shown in Figure 8; Make two pipelines being connected cannot axial-rotation, therefore can effectively avoid sealing material distortion in it impaired.After pressure ring machines, teflon sleeve is well sealed between two pressure rings, and the pipeline being connected can bear various levels to, vertically to or axial stress distortion, sealing effect is firm.

In addition, above-mentioned seal ring can be also expanded PTFE band, purpose made thickness and width.In the time carrying out seal for pipe joints connection, only expanded PTFE need be wound in to public pipe linkage section outer wall to thickness is 0.8mm ± 0.05mm, then female pipe linkage section is socketed on it, and card afterwards presses operation identical with previous embodiment, and description will be omitted.

As shown in Figure 7, from another preferred embodiment of the utility model: above-mentioned seal ring is the anaerobic adhesive 34 that is coated on public pipe linkage section outer wall, is annulus column construction under anaerobic adhesive sizing state.Can further simplify like this difficulty of processing of female pipe double step, owing to only needing coating anaerobic adhesive and male pipe to slip mutually with female pipe, so female pipe linkage section can keep straight.When after two pipeline sockets, only need be pressed into pressure pipe tool card the pressure ring and the radial cross section that radially inside contract respectively at the coincidence tube wall place of anaerobic adhesive both sides of the edge is the polygonal snap ring of non-circle.Here snap ring can be pentagon, Hexagon etc.Under anoxybiotic environment, can merge one based on anaerobic adhesive with thin-wall stainless steel, it has excellent physicochemical property, therefore this embodiment can play effectively firm sealing effect equally.

To sum up describe visible to the embodiment of the utility model Hermetical connecting structure and attaching method thereof: seal by the teflon (artificial blood vessel) or the alternative traditional rubber ring of anaerobic adhesive that adopt wide cut annulus cylindricality, and the two kinds of traditional linkage structures of learning from other's strong points to offset one's weaknesses form snap ring pressure, greatly improve the fastening degree that seal for pipe joints connects, thoroughly having stopped the pipeline after crimping rotates relatively, ensure the initial performance that material is filled in sealing, be conducive to the popularization and application of thin-wall stainless steel water pipe.Popular a word says that " within 3 years, apprentice is gone for ever in the industry, within three minutes, the whole nation on duty is current ", refer to nowadays more and more coarse to the attaching personnel's of basic unit technical training, causing construction workman's technology and quality, uneven (requirement on duty of undeniable current capital construction industry is to hold relevant technical ability certificate, and also some unit can accomplish like this, but without card or without the workman of technology qualification on duty be also a universal phenomenon), and the linkage structure of this creation and the generation of connecting means, press combination the improvement of pressing with ring to replace sealing material by card, can make the competent attaching work of construction workman without professional training.And benefit from this linkage structure and method, the connection sealing quality of thin-wall stainless steel water pipe is ensured, and be no longer dependent on workmen's technical merit, be therefore conducive to equally the popularization and application of thin-wall stainless steel water pipe.

In addition to the implementation, the utility model can also have other mode of execution.All employings are equal to the technological scheme of replacement or equivalent transformation formation, within all dropping on the utility model scope required for protection.

Claims

1. the Hermetical connecting structure of pipeline, relate to the male pipe of thin-wall stainless steel and female pipe of relative connection, it is characterized in that: the seal ring that is provided with annulus cylindricality at the outer wall of public pipe linkage section, the breadth of the corresponding seal ring of the height of annulus post and be greater than 8mm, is respectively equipped with at the coincidence tube wall place of seal ring both sides of the edge under two pipeline socket states and is the pressure ring of recessed shape radially and the pressure ring outside segment distance of being separated by and is provided with radial cross section and is the polygonal snap ring of non-circle.

2. the Hermetical connecting structure of pipeline according to claim 1, is characterized in that: described snap ring is Hexagon snap ring.

3. the Hermetical connecting structure of pipeline according to claim 1, is characterized in that: described seal ring is teflon sleeve, wall thickness is 0.8mm ± 0.05mm.

4. the Hermetical connecting structure of pipeline according to claim 1, is characterized in that: described seal ring is the expanded PTFE that is wound in public pipe linkage section outer wall, and winding thickness is 0.8mm ± 0.05mm.

5. the Hermetical connecting structure of pipeline according to claim 1, is characterized in that: described seal ring is the anaerobic adhesive that is coated on public pipe linkage section outer wall, under anaerobic adhesive and tube metal solidifying and setting state, is annulus column construction.