CN201688074U - Two-way retractable plastic pipeline union - Google Patents
Two-way retractable plastic pipeline union Download PDFInfo
- Publication number
- CN201688074U CN201688074U CN2010201332815U CN201020133281U CN201688074U CN 201688074 U CN201688074 U CN 201688074U CN 2010201332815 U CN2010201332815 U CN 2010201332815U CN 201020133281 U CN201020133281 U CN 201020133281U CN 201688074 U CN201688074 U CN 201688074U
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- inner sleeve
- outer sleeve
- sleeve
- section
- slip joint
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Abstract
The utility model discloses a two-way retractable plastic pipeline union, which comprises an outer sleeve and two inner sleeves positioned at both ends of the cavity of the outer sleeve; one end of each inner sleeve is provided with a connecting section which is connected with an external pipeline, and the other end of each inner sleeve is provided with a sealed section positioned in the cavity of the outer sleeve; the outer wall of the sealed section is provided with annular grooves, in which annular sealing rings are arranged; the sealed sections of the inner sleeves can reciprocate in the cavity of the outer sleeve, and the sealing rings move along with the inner sleeves and seal the gaps between the outer walls of the inner sleeves and the outer wall of the outer sleeve. The utility model can effectively reduce the cost of pipeline laying.
Description
Technical field
The utility model relates to the pipeline connection technology field, particularly a kind of two-way plastic pipe slip joint that is used to connect plastic pipe.
Background technique
Plastic pipe is along with its many advantage at aspect of performance, it is ageing-resistant, the pipeline that can avoid itself in corrosion protection and the conveying with pollution or the like the characteristic of dissolved ions, make plastic pipe produce and life in to be used as the application percentage of delivery line of long distance more and more higher.
Plastic pipe is when being used as the delivery line of long distance, need couple together by slip joint a lot of independent pipelines are sectional, but, plastic pipe make the plastic conveying and plastic pipeline of long distance cause its length change bigger because of the temperature difference that the conversion in season produces owing to having bigger thermal expansion coefficient, so be used to connect the quality of the slip joint of independent pipeline and pipeline, becoming influences the key factor of plastic pipe as the usability of the delivery line of long distance.
The slip joint that is used for connecting tube and pipeline, normally used is metal slip joint, under certain temperature difference environment, can guarantee effective operation of whole delivery pipeline system, but metal slip joint can reduce ageing-resistant, the corrosion protection of integral body of plastic pipe and the pipeline that can avoid itself in the conveying with pollution or the like the characteristic of dissolved ions; In addition, because the thermal expansion coefficient of metal material and the thermal expansion coefficient of plastic material differ bigger, so, seepage or leakage take place easily in the joint of stainless steel telescopic joint and plastic pipe.
So, more and more connect plastic pipe now and use plastic telescopic section to connect.Generally speaking sealing in the plastic telescopic section between inner sleeve and the outer sleeve, is the socket place at inner sleeve and outer sleeve, open loop shape groove, and the O RunddichtringO is set in ditch, to reach the effect of sealing.
The claimant finds that in practice the plastic telescopic section on the market all is unidirectional slip joint now, promptly has only an outer sleeve and an inner sleeve.The shortcoming of this unidirectional slip joint is: because unidirectional flexible limited length causes connected duct length also shorter; So lay the pipeline of same distance, just need more unidirectional slip joint, improved the pipe laying cost.
The model utility content
The purpose of this utility model provides a kind of two-way plastic pipe slip joint that can reduce the pipe laying cost.
The technological scheme that realizes the utility model purpose is: a kind of two-way plastic pipe slip joint comprises outer sleeve and inner sleeve; One end of described inner sleeve is provided with the linkage section that is connected with external pipe, and the other end is provided with the seal section that is arranged in the outer sleeve tube chamber; The outer wall of described seal section is provided with annular groove, is provided with O-ring seal in the described annular groove; The seal section of described inner sleeve can move back and forth in the tube chamber of described outer sleeve, and described seal ring moves and block the gap between described inner sleeve outer wall and the described outer sleeve inner wall along with inner sleeve; Its structural feature is: the tube chamber two ends of described outer sleeve respectively are provided with an inner sleeve.
In the technique scheme, the seal section of described each inner sleeve is arranged in the outer sleeve tube chamber, and the linkage section of each inner sleeve is positioned at the both sides of described outer sleeve.
In the technique scheme, the outer wall at described outer sleeve head and the tail two ends is provided with the outside thread district, also is arranged with a flange on described each inner sleeve; Described flange comprises the sliding area that is used to be set on the corresponding inner sleeve and is used for the solid district that is spirally connected in the outside thread district of described outer sleeve of spiral shell.
In the technique scheme, also be arranged with a guide ring with breaking joint on described each inner sleeve, described guide ring is arranged in described flange, and between the sliding area of an end wall of outer sleeve and a corresponding flange.
In the technique scheme, the external diameter of the seal section of described inner sleeve is greater than the external diameter of its linkage section, and the sliding area of described flange is set on the linkage section of described inner sleeve, and the internal diameter of described flange sliding area is less than the external diameter of described inner sleeve seal section.
In the technique scheme, described outer sleeve comprises in two glissile segments at head and the tail two ends and the enhancing section between two glissile segments; The seal section of described inner sleeve can reciprocatingly slide in the tube chamber of described outer sleeve glissile segment, and described seal ring moves and block the gap between described inner sleeve seal section outer wall and the described outer sleeve glissile segment inwall along with inner sleeve.
In the technique scheme, described outer sleeve strengthens the pipe thickness of the pipe thickness at section place greater than its glissile segment.
In the technique scheme, described outer sleeve strengthens section and equates with the external diameter of glissile segment.
In the technique scheme, the pipe thickness of described outer sleeve glissile segment is greater than the pipe thickness of the seal section of described inner sleeve.
In the technique scheme, the outboard end of described inner sleeve linkage section is provided with flange-type connecting head or tube-inserted type connecting head.
The utlity model has positive effect:
(1) in the utility model, the tube chamber two ends of described outer sleeve respectively are provided with an inner sleeve, also be that the utility model is a kind of slip joint with bi-directional expansion effect, because two inner sleeves are flexible at the two ends of outer sleeve tube chamber, so with respect to unidirectional slip joint, flexible length obviously increases, and can improve connected duct length; So when laying the pipeline of same distance, need the bi-directional expansion joint of negligible amounts, compare with selecting unidirectional slip joint for use, effectively reduce the pipe laying cost.
(2) in the utility model, the pipe thickness of described outer sleeve glissile segment is greater than the pipe thickness of the seal section of described inner sleeve.When this structure was flowed through high-pressure liquid in tube chamber, slip joint had better sealing effect.Because under high pressure, plastic pipe can swell, adopt the technical solution of the utility model, can guarantee the internal diameter increase amplitude of the increase amplitude of inner sleeve external diameter greater than outer sleeve, make gap between described inner sleeve external diameter and the outer sleeve internal diameter remain unchanged or diminish, thereby guarantee that seal ring can continue to block the gap between described inner sleeve outer wall and the described outer sleeve inner wall.
(3) in the utility model, described outer sleeve strengthens the pipe thickness of the pipe thickness at section place greater than its glissile segment.Because the outer sleeve of bi-directional expansion joint is longer for the outer sleeve of unidirectional slip joint, deformation takes place in the middle part of outer sleeve easily because of pressure is excessive, when hydrodynamic pressure is big, the outer sleeve especially central region of outer sleeve also promptly strengthens section and gross distortion will take place and influence its using effect, the utility model is then by strengthening described outer sleeve the pipe thickness of the pipe thickness at section place greater than its glissile segment, this under big pressure, because it is thicker to strengthen the wall thickness of section, its effect that swells obviously reduces, and be positioned at the glissile segment that strengthens the section both sides, though pipe thickness is less, the effect that swells is obvious, but because its head and the tail two ends can be fastening by flange, the corresponding partial pressure that balances out, cause the actual effect that swells to approach to strengthen section, so the utility model can make the deformation of its tube wall comparatively even, can be by big pressure fluid.
Description of drawings
For the easier quilt of content of the present utility model is clearly understood, according to specific embodiment of the utility model also in conjunction with the accompanying drawings, the utility model is described in further detail below, wherein:
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is the partial structurtes enlarged diagram at A place among Fig. 1;
Fig. 3 is a kind of structural representation of guide ring in the two-way plastic telescopic section shown in Figure 1;
Fig. 4 is that the B of guide ring shown in Figure 3 is to view.
Reference character is: outer sleeve 1, and outside thread district 11, glissile segment 12 strengthens section 13, inner sleeve 2, linkage section 21, seal section 22, annular groove 221, seal ring 222, connecting head 23, flange 3, sliding area 31, the district 32 that is spirally connected, guide ring 4, breaking joint 41.
Embodiment
(embodiment 1)
Fig. 1 to Fig. 4 has shown a kind of embodiment of the present utility model, and wherein Fig. 1 is a kind of structural representation of the present utility model; Fig. 2 is the partial structurtes enlarged diagram at A place among Fig. 1; Fig. 3 is a kind of structural representation of guide ring in the two-way plastic telescopic section shown in Figure 1; Fig. 4 is that the B of guide ring shown in Figure 3 is to view.
Present embodiment is a kind of two-way plastic pipe slip joint that is used to connect plastic pipe, and material therefor is third rare nitrile-butadiene-styrene copolymer (being commonly called as ABS resin); Comprise outer sleeve 1 and two inner sleeves 2; The described coming year, each inner sleeve 2 was positioned at the two ends of described outer sleeve 1 tube chamber; One end of described each inner sleeve 2 is provided with the linkage section 21 that is connected with external pipe, and the other end is provided with the seal section 22 that is arranged in outer sleeve 1 tube chamber; The outboard end of described inner sleeve 2 linkage sections 21 is provided with flange-type connecting head or tube-inserted type connecting head 23, and present embodiment is selected the tube-inserted type connecting head for use.
The outer wall of described seal section 22 is provided with annular groove 221, is provided with O-ring seal 222 in the described annular groove 221; The seal section 22 of described inner sleeve 2 can move back and forth in the tube chamber of described outer sleeve 1, and described seal ring 222 moves and block the gap between described inner sleeve 2 outer walls and described outer sleeve 1 inwall along with inner sleeve 2.
The seal section 22 of described each inner sleeve 2 is arranged in outer sleeve 1 tube chamber, and the linkage section 21 of each inner sleeve 2 is positioned at the both sides of described outer sleeve 1.
The outer wall at described outer sleeve 1 head and the tail two ends is provided with outside thread district 11, also is arranged with a flange 3 on described each inner sleeve 2; Described flange 3 comprises the sliding area 31 that is used to be set on the corresponding inner sleeve 2 and is used for the solid district 32 that is spirally connected in the outside thread district 11 of described outer sleeve 1 of spiral shell.
Also be arranged with a guide ring 4 with breaking joint 41 on described each inner sleeve 2, described guide ring 4 is arranged in described flange 3, and between the sliding area 31 of an end wall of outer sleeve 1 and a corresponding flange 3.
See shown in Figure 2, the external diameter f of the seal section 22 of described inner sleeve 2 is greater than the external diameter e of its linkage section 21, the sliding area 31 of described flange 3 is set on the linkage section 21 of described inner sleeve 2, and the internal diameter of described flange 3 sliding areas 31 is less than the external diameter f of described inner sleeve 2 seal sections 22.
Described outer sleeve 1 comprises in two glissile segments 12 at head and the tail two ends and the enhancing section 13 between two glissile segments 12; The seal section 22 of described inner sleeve 2 can reciprocatingly slide in the tube chamber of described outer sleeve 1 glissile segment 12, and described seal ring 222 moves and block the gap between described inner sleeve 2 seal sections, 22 outer walls and described outer sleeve 1 glissile segment 12 inwalls along with inner sleeve 2.
Described outer sleeve 1 strengthens the pipe thickness b of the pipe thickness c at section 13 places greater than its glissile segment 12, and in this example, in order to reduce the resistance to air-flow or liquid stream, described outer sleeve 1 strengthens section 13 and equates with the external diameter of glissile segment 12.
The pipe thickness b of described outer sleeve 1 glissile segment 12 is greater than the pipe thickness a of the seal section 22 of described inner sleeve 2.
(experimental example)
Select embodiment's 1 described product for use, its concrete specification is: 800 millimeters of overcoat pipe ranges, and strengthening section pipe thickness c is 28 millimeters, and strengthening section outer wall circumferential length is 358.8 millimeters, and glissile segment pipe thickness b is 40 millimeters; Test method is as follows: the connecting head that at first stops up two inner sleeves, in tube chamber, inject the high pressure tap water with water pump, detect injection hydraulic pressure with pressure gauge, change at set intervals and inject hydraulic pressure and pressurize, checking have ne-leakage and outer sleeve to strengthen the circumferential variation of section center between inner sleeve outer wall and the outer sleeve inner wall between hold period.The concrete parameter of whole course of exerting pressure sees Table 1.
Table 1
Laboratory data proves that this slip joint has good sealing effect, and the outer sleeve external diameter that the strengthens section degree that swells is very little in addition, fully within the acceptable range.
Present embodiment has positive effect:
(1) in the present embodiment, the tube chamber two ends of described outer sleeve respectively are provided with an inner sleeve, also be that present embodiment is a kind of slip joint with bi-directional expansion effect, because two inner sleeves are flexible at the two ends of outer sleeve tube chamber, so with respect to unidirectional slip joint, flexible length obviously increases, and can improve connected duct length; So when laying the pipeline of same distance, need the bi-directional expansion joint of negligible amounts, compare with selecting unidirectional slip joint for use, effectively reduce the pipe laying cost.
(2) in the present embodiment, the pipe thickness of described outer sleeve glissile segment is greater than the pipe thickness of the seal section of described inner sleeve.When this structure was flowed through high-pressure liquid in tube chamber, slip joint had better sealing effect.Because under high pressure, plastic pipe can swell, adopt the technological scheme of present embodiment, can guarantee the internal diameter increase amplitude of the increase amplitude of inner sleeve external diameter greater than outer sleeve, make gap between described inner sleeve external diameter and the outer sleeve internal diameter remain unchanged or diminish, thereby guarantee that seal ring can continue to block the gap between described inner sleeve outer wall and the described outer sleeve inner wall.
(3) in the present embodiment, described outer sleeve strengthens the pipe thickness of the pipe thickness at section place greater than its glissile segment.Because the outer sleeve of bi-directional expansion joint is longer for the outer sleeve of unidirectional slip joint, deformation takes place in the middle part of outer sleeve easily because of pressure is excessive, when hydrodynamic pressure is big, the outer sleeve especially central region of outer sleeve also promptly strengthens section and gross distortion will take place and influence its using effect, present embodiment is then by strengthening described outer sleeve the pipe thickness of the pipe thickness at section place greater than its glissile segment, this under big pressure, because it is thicker to strengthen the wall thickness of section, its effect that swells obviously reduces, and be positioned at the glissile segment that strengthens the section both sides, though pipe thickness is less, the effect that swells is obvious, because its head and the tail two ends can be fastening by flange, the corresponding partial pressure that balances out, cause the actual effect that swells to approach to strengthen section, so present embodiment can make the deformation of its tube wall comparatively even, can be by big pressure fluid.
Obviously, the foregoing description of the present utility model only is for the utility model example clearly is described, and is not to be qualification to mode of execution of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all mode of executions.And these belong to conspicuous variation or the change that spirit of the present utility model extended out and still are among the protection domain of the present utility model.
Claims (10)
1. a two-way plastic pipe slip joint comprises outer sleeve (1) and inner sleeve (2); One end of described inner sleeve (2) is provided with the linkage section (21) that is connected with external pipe, and the other end is provided with the seal section (22) that is arranged in outer sleeve (1) tube chamber; The outer wall of described seal section (22) is provided with annular groove (221), is provided with O-ring seal (222) in the described annular groove (221); The seal section (22) of described inner sleeve (2) can move back and forth in the tube chamber of described outer sleeve (1), and described seal ring (222) moves and block the gap between described inner sleeve (2) outer wall and described outer sleeve (1) inwall along with inner sleeve (2);
It is characterized in that: the tube chamber two ends of described outer sleeve (1) respectively are provided with an inner sleeve (2).
2. two-way plastic pipe slip joint according to claim 1 is characterized in that: the seal section (22) of described each inner sleeve (2) is arranged in outer sleeve (1) tube chamber, and the linkage section (21) of each inner sleeve (2) is positioned at the both sides of described outer sleeve (1).
3. two-way plastic pipe slip joint according to claim 2 is characterized in that: the outer wall at described outer sleeve (1) head and the tail two ends is provided with outside thread district (11), also is arranged with a flange (3) on described each inner sleeve (2); Described flange (3) comprises and is used to be set in the sliding area (31) on the corresponding inner sleeve (2) and is used for the solid district (32) that is spirally connected in the outside thread district (11) of described outer sleeve (1) of spiral shell.
4. two-way plastic pipe slip joint according to claim 3, it is characterized in that: also be arranged with a guide ring (4) on described each inner sleeve (2) with breaking joint (41), described guide ring (4) is arranged in described flange (3), and is positioned between the sliding area (31) of an end wall of outer sleeve (1) and a corresponding flange (3).
5. two-way plastic pipe slip joint according to claim 4, it is characterized in that: the external diameter of the seal section (22) of described inner sleeve (2) is greater than the external diameter of its linkage section (21), the sliding area (31) of described flange (3) is set on the linkage section (21) of described inner sleeve (2), and the internal diameter of described flange (3) sliding area (31) is less than the external diameter of described inner sleeve (2) seal section (22).
6. two-way plastic pipe slip joint according to claim 1 is characterized in that: described outer sleeve (1) comprises two glissile segments (12) that are positioned at the head and the tail two ends and is positioned at enhancing section (13) between two glissile segments (12); The seal section (22) of described inner sleeve (2) can reciprocatingly slide in the tube chamber of described outer sleeve (1) glissile segment (12), and described seal ring (222) moves and block the gap between described inner sleeve (2) seal section (22) outer wall and described outer sleeve (1) glissile segment (12) inwall along with inner sleeve (2).
7. two-way plastic pipe slip joint according to claim 6 is characterized in that: the pipe thickness that described outer sleeve (1) enhancing section (13) is located is greater than the pipe thickness of its glissile segment (12).
8. two-way plastic pipe slip joint according to claim 7 is characterized in that: described outer sleeve (1) strengthens section (13) and equates with the external diameter of glissile segment (12).
9. two-way plastic pipe slip joint according to claim 6 is characterized in that: the pipe thickness of described outer sleeve (1) glissile segment (12) is greater than the pipe thickness of the seal section (22) of described inner sleeve (2).
10. two-way plastic pipe slip joint according to claim 1 is characterized in that: the outboard end of described inner sleeve (2) linkage section (21) is provided with flange-type connecting head or tube-inserted type connecting head (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201332815U CN201688074U (en) | 2010-03-17 | 2010-03-17 | Two-way retractable plastic pipeline union |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201332815U CN201688074U (en) | 2010-03-17 | 2010-03-17 | Two-way retractable plastic pipeline union |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201688074U true CN201688074U (en) | 2010-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201332815U Expired - Fee Related CN201688074U (en) | 2010-03-17 | 2010-03-17 | Two-way retractable plastic pipeline union |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201688074U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194712A (en) * | 2016-12-08 | 2018-06-22 | 辽宁丹东新弘源农业科技发展有限公司企业技术研究开发中心 | A kind of scalable hydraulic oil pipe |
| CN108386642A (en) * | 2016-09-12 | 2018-08-10 | 天津大学 | Application of the telescopic expansion loop in the anti-buckling field of submerged pipeline |
| CN108488529A (en) * | 2018-03-26 | 2018-09-04 | 江苏兄弟管业制造有限公司 | A kind of corrugated expansion joint of efficient vibration damping |
| CN111255970A (en) * | 2020-03-06 | 2020-06-09 | 邓明洋 | Axial expansion joint |
| CN112728269A (en) * | 2021-01-22 | 2021-04-30 | 赵俞琳 | Urban buried pipeline |
-
2010
- 2010-03-17 CN CN2010201332815U patent/CN201688074U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108386642A (en) * | 2016-09-12 | 2018-08-10 | 天津大学 | Application of the telescopic expansion loop in the anti-buckling field of submerged pipeline |
| CN108194712A (en) * | 2016-12-08 | 2018-06-22 | 辽宁丹东新弘源农业科技发展有限公司企业技术研究开发中心 | A kind of scalable hydraulic oil pipe |
| CN108488529A (en) * | 2018-03-26 | 2018-09-04 | 江苏兄弟管业制造有限公司 | A kind of corrugated expansion joint of efficient vibration damping |
| CN111255970A (en) * | 2020-03-06 | 2020-06-09 | 邓明洋 | Axial expansion joint |
| CN111255970B (en) * | 2020-03-06 | 2021-12-24 | 山东恒通膨胀节制造有限公司 | Axial expansion joint |
| CN112728269A (en) * | 2021-01-22 | 2021-04-30 | 赵俞琳 | Urban buried pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101229 Termination date: 20140317 |