CN1145752C - Extensible flexible pipe joint - Google Patents
Extensible flexible pipe joint Download PDFInfo
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- CN1145752C CN1145752C CNB991027868A CN99102786A CN1145752C CN 1145752 C CN1145752 C CN 1145752C CN B991027868 A CNB991027868 A CN B991027868A CN 99102786 A CN99102786 A CN 99102786A CN 1145752 C CN1145752 C CN 1145752C
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- flexible pipe
- cylindrical body
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Abstract
The present invention relates to a telescopic flexible pipe joint, which is composed of a first cylindrical body, a second cylindrical body, and a third cylindrical body. The inner peripheral surface of the first cylindrical body forms an annular slot, and walls which are generally vertical to a cylindrical shaft line are formed of the front end and the back end of the direction of the cylindrical shaft line. The interior of a concave part which is formed on the outer peripheral surface near the end part of the second cylindrical body is nested and fixed with a locking ring, and the end surface of the fixing ring forms the surface contact with the wall on the front end and the back end of the first cylindrical body to limit the movement of the locking ring when the locking ring is suffered by outer force action. Meanwhile, sealing devices are inserted in sliding positions among the first cylindrical body, the second cylindrical body and the third cylindrical body.
Description
Technical field
The present invention relates to extensible flexible pipe joint, in detail, relating to connect pipelines such as water pipe scalable has flexiblely, does the time spent and can absorb external force and can prevent the extensible flexible pipe joint that pipeline destroys receiving excessive external force.
Background technique
The pipeline that be laid on the ground or underground long water pipe road etc. set up often receives the pressure, pulling force of pipe direction of axis line owing to reasons such as setting of ground or earthquakes or intersects all external force effects such as shearing on the direction and moment of flexure with the pipe shaft axis.When this power was very big, stress often concentrated on the pipe joint that connects set pipeline, made the pipe joint partial destruction.Therefore, the external force of energy absorption on the waterpipe part is just very necessary with the destruction that prevents pipe joint.
In the past, developed a kind of pipe joint, prevented to destroy, taked to make the retractable structure of pipe joint itself (for example, special public clear 55-40796, real public clear 55-37816) in order to absorb external force.Yet this pipe joint can only telescopic moving, and its movable range is two-dimentional, so can not fully deal with owing to the caused external force of reasons such as setting of ground or earthquake.
So, just develop and adopt mutual sphere to contact also slidably structure, have three-dimensional flexible pipe joint.A kind of pipe joint is disclosed in the EP 0797040A2 patent, first cylinder that constitutes by a pair of sphere ring-shaped article that forms the spherical calotte outer circumferential face, can insert second cylindrical shell of the sleeve shape in described first cylindrical shell in tube axis X direction with relatively moving, and be coated at and have the 3rd cylinder spherical shape inner peripheral surface, that on two end part, form a pair of outer sleeve of joint that to slide mutually on the outer circumferential face of described first cylinder and constitute; Form annular groove on the inner peripheral surface of above-mentioned first cylinder, at the wall of formation cardinal principle in the front end and back end of its axial direction with the tube axis normal, described second cylinder, locking ring can nestedly be fixed in the groove that is formed near the outer circumferential face in end, when external force is done the time spent, the end face of locking ring contacts with the described wall formation face of the above-mentioned first cylinder front end and back end, moves to limit it, and insert seal arrangement respectively on each sliding position of above-mentioned first cylindrical shell, second cylindrical shell and the 3rd cylindrical shell.In addition, EP 0870965A1 has also reported a kind of pipe joint, and the cylinder of this pipe joint has the spherical calotte of formation shape outer circumferential face.Yet the flexible flexible scope of this pipe joint is still very little so far, and the leeway of improvement is still arranged.Because pipe joint itself is scalable to be had flexiblely, when carrying out the hydrostatic test before use or in transporting the carrying way, the parts of formation pipe joint can be because of the mobile displacement of vibration.Therefore, the processing before pipe joint is connected on the pipeline is with pretty troublesome, and this will inevitably influence the convenience of use.
Summary of the invention
The objective of the invention is to, a kind of shortcoming that can eliminate prior art is provided, can fully deal with the excessive external force effect that causes because of setting of ground and earthquake etc., the flexible big pipe joint of range of flexibility.
Another object of the present invention is to, provide a kind of and can keep that it is original flexible flexible, and, even in carrying the way, also be difficult for making the package assembly of pipe joint to change, handle pipe joint very easily.
For achieving the above object.Pipe joint of the present invention, it comprises:
First cylinder is made of a pair of sphere ring part that forms spherical calotte shape outer circumferential face (4);
Second cylinder is made of the sleeve that can insert described first cylinder in tube axis X direction with relatively moving;
The 3rd cylinder, it is coated on the outer circumferential face (4) of described first cylinder has the spherical shape inner peripheral surface (5) that can slide mutually, forms a pair of outer sleeve of joint (6) on two end part;
Described first cylinder, (1a, 1 ' a) is at wall (1b, 1 ' b, the 1c, 1 ' c) of formation cardinal principle in the front end and back end of tube axial direction with the tube axis normal to form annular groove on inner peripheral surface;
Described second cylinder, locking ring (17) can nestedly be fixed in the groove that is formed near the outer circumferential face in end, do the time spent as external force, (1b, 1 ' b, 1c, 1 ' c) can contact by formation face the described wall of the end face of locking ring (17) and the front end and back end of described first cylinder, move to limit it;
On each sliding position of described first cylinder and second cylinder and the 3rd cylinder, insert seal arrangement (8,9) respectively;
It is characterized in that form the teat (12) of band through hole on the major diameter place outer circumferential face of described the 3rd cylinder, the screw rod (13) that is screwed in this teat (12) through hole is erected between the teat (12) of a pair of described the 3rd cylinder, with the expanding-contracting action of no-go nipple;
Described screw rod (13) is made of a pair of screw rod (13a, 13b) that connects on the roughly neutral position between the described relative teat (12,12), these paired screw rods (13a, 13b) are screwed into length direction respectively and substantially have on the neutral position in the formed two opening screws in long nut (16) two ends of otch (16a) and realize linking, when bearing excessive external force, above-mentioned opening portion (16a) at first destroys, thereby recovers the flexible flexible of pipe joint.
Use such structure, just can be enough to deal with the extention effect situation that causes because of setting of ground or earthquake etc., can do three-dimensional moving, also be the structure that makes locking ring be difficult to come off simultaneously, because the sealing function of seal arrangement, even under excessive external force effect, also can guarantee the close property of its liquid frequently, can prevent the destruction of institute's water receiving pipe etc. conscientiously, keep it to connect the joint function of original water pipe.Therefore,, just can realize the big flexible high joint structure of flexible scope, can fully deal with the big pipe joint of flexible that causes the situation of excessive external force effect because of setting of ground or earthquake etc. thereby provide a kind of if adopt pipe joint of the present invention.
The annular groove of described first cylinder preferably enlarges in echelon and forms horn-like from the end diameter of hole enlargement limited part.Like this,, can in moving the way, not block yet, can successfully move on the hole enlargement limited part even when locking ring moves under big setting of ground power effect.
And then, first cylinder of extensible flexible pipe joint of the present invention preferably is made of land portions and straight-tube portion, described land portions is brought into play the described second cylinder function, and at this moment, this extensible flexible pipe joint is made of first cylinder and the 3rd cylinder.Such structure can reduce part number, reduces overall cost.
Also have, in the extensible flexible pipe joint of the present invention, be preferably in the teat that forms the band screw on the outer circumferential face at major diameter place of above-mentioned the 3rd cylinder, the screw rod that is screwed in this teat screw is erected between the teat of a pair of described the 3rd cylinder, with the expanding-contracting action of no-go nipple.So, before pipe joint of the present invention being connected on the pipelines such as water pipe, also carry out the hydrostatic test or transport in the conveyance way, each parts that constitutes pipe joint can not deviate from because of vibration yet, handle simply easily before so pipe joint is connected to pipeline, thereby provide a kind of usability good pipe joint.
Moreover, preferably make extensible flexible pipe joint of the present invention, its described screw rod is made of a pair of screw rod that connects on the roughly neutral position between the above-mentioned relative teat, these paired screw rods are screwed into length direction respectively and substantially have on the neutral position in the formed two opening screws in two ends of long nut of otch and realize linking, when bearing excessive external force, described opening portion at first destroys, thereby recovers the flexible flexible of pipe joint.Like this,, just can bring into play original flexible function, deal with convenient, smooth in the beginning that is acting on excessive external force.
In addition, in extensible flexible pipe joint of the present invention, preferably make two screws that form opening on the described long nut two ends that the end is all arranged.Can guarantee that like this long bolt has certain intensity before use, improve product qualified rate, use easily simple.
Description of drawings
Fig. 1 is the extensible flexible pipe joint sectional view of an embodiment of the present invention.
Fig. 2 is an expression sphere ring part conversion example major component sectional view.
Fig. 3 is the sectional view of another embodiment's extensible flexible pipe joint.
Fig. 4 is the sectional view of another embodiment's extensible flexible pipe joint.
Fig. 5 is the operation instruction enlarged view of long nut among Fig. 4.
Embodiment
Following with reference to accompanying drawing, explain the embodiment of extensible flexible pipe joint of the present invention.
Fig. 1 shows the cross-section structure of the extensible flexible pipe joint A of present embodiment, and this extensible flexible pipe joint A is made of first cylinder, second cylinder and the 3rd cylinder.First cylinder is to have the cast iron sphere ring- shaped article 1,1 of spherical calotte shape outer circumferential face 4 to constitute by a pair of, and 2 of second cylinder are made of the cast iron sleeve 2 that can insert in described first cylinder on tube axis X direction with relatively moving.The 3rd is cylinder-shaped by the spherical shape inner peripheral surface 5 that has on each outer circumferential face 4 that is coated at first cylinder, and form a pair of cast iron sleeve pipe 3,3 formations as the flange of joint at two end part.Because extensible flexible pipe joint A is such structure, so the rubber seal ring 8,9 as seal arrangement is also inserted in 3, the 3 scalable relative swingingly connections of 1,1 and two sleeve pipe of above-mentioned sleeve 2 and anchor ring ring-shaped article simultaneously between sphere ring- shaped article 1,1 and sleeve 2 and sleeve pipe 3,3.Insert these seal rings 8,9, then can guarantee the liquid sealing of the mutual sliding parts of each parts, and then seal ring 8,9 is because its face protrudes in protuberance on the vallecular cavity of accommodating seal ring 8,9 and pressurized.Even pipe interior hydraulic pressure height, seal ring 8,9 also is difficult for deviating from. Seal ring 8,9 is preferably made with synthetic rubber such as styrene butadiene ribbers.
The outboard end of sleeve pipe 3 forms the extension 6 that is connected usefulness with other pipeline B, insert screw 10 in the through hole on extension 6 on the extension of formed through hole and other pipeline B, nut 11 be screwed in screw 10 the head on tighten up, just with other pipeline B binding on.Then, rubber system sheath 7 is straddled on sleeve 2 and the sleeve 3, to protect the sliding parts of each parts.
Below, the structure of sphere ring-shaped article 1 is described.On the inner peripheral surface of sphere ring-shaped article 1, form annular groove 1a, in the inboard of this annular groove 1a and the nested recess that is fixed near outer circumferential face sleeve 2 ends, section is that polygonal stainless steel locking ring 17 joins, with restriction sphere ring-shaped article 1 and the relative shifting range of sleeve 2 on the tube axial direction.In other words, when sphere ring-shaped article 1 relatively moves on left and right directions with sleeve 2, the locking ring 17 that is nested on sleeve 2 outer circumferential faces will join with position-limited groove 1b, the 1c of formed annular ditch groove 1a left and right end portions on sphere ring part 1 inner peripheral surface, surmount both relatively moving with prevention, thereby guarantee its liquid sealing, these position- limited grooves 1b, 1c is provided with and the wall of 17 cardinal principles that contact of locking ring with the tube axis normal.
Locking ring 17 along cylindrical sleeve 2 outer circumferential faces circlewise, its part cuts substantially C font.Under the state that keeps sleeve 2 to insert in the sphere ring-shaped article 1, locking ring 17 can be enclosed within on the outer circumferential face of sleeve 2 with the anchor clamps (not shown), in addition, the shape of locking ring 17 preferably section is that the tube direction of axis line is slightly long, indulges: horizontal=1: 15-1: 2 rectangular.Particularly, if vertical: horizontal=1: 18-1: 2 rectangular is better, even be subjected to big external force also to be difficult for throwing off.
Fig. 2 show sphere ring part 1 ' variation.Fig. 2 A, Fig. 2 B be sphere ring-shaped article 1 ' with sleeve 2 slip the part enlarged view, the situation that both relatively move to Fig. 2 A position from Fig. 2 A position under external force is shown.In addition, for fear of miscellaneous, saved sleeve pipe.
This sphere ring-shaped article 1 ' have the shape facility of annular groove 1 ' a, it is formed on the inner circumferential surface.Promptly, sleeve 2 is when Fig. 2 A position moves on to position shown in Fig. 2 B under external force, locking ring 17 on the sleeve 2 and sphere ring part 1 ' hole enlargement limited part 1 ' d join, hole enlargement limited part 1 ' d by along the hole enlargement confined planes 1 ' f of the tube axis X direction of sleeve 2 and substantially the longitudinal wall 1 ' c vertical with this hole enlargement confined planes 1 ' f constitute, locking ring 17 is put among hole enlargement limited part 1 ' a just, becomes face with longitudinal wall 1 ' c and contacts.Even thereby on the position of Fig. 2 B, receive bigger external force effect, locking ring 17 also is not easy to come off from sleeve 2.
Under external force from Fig. 2 A under the situation that position-reversed relatively moves shown in Fig. 2 B, 17 of locking rings on the sleeve 2 and sphere ring part 1 ' end face 1 ' b join, the tube axis X direction of end face 1 ' b and sleeve 2 is formed generally perpendicularly, and becomes face to contact with the end face of locking ring 17.In addition, sphere ring part 1 ' annular groove 1 ' a on also form from tubaeform 1 ' e of the trapezoidal expansion of hole enlargement limited part 1 ' d end diameter, at locking ring 17 under the big effects such as setting of ground power when position shown in Fig. 2 B is shifted in Fig. 2 A position, it moves also and can not be obstructed midway, can move to hole enlargement limited part 1 ' d reliably.
Other embodiment
(a) cross-section structure of other embodiment's extensible flexible pipe joint A ' shown in Fig. 3.This pipe joint A ' is made of first cylinder 21 and the 3rd cylinder.First cylinder 21 has land portions 21a and straight-tube portion 21b.The 3rd cylinder shape is same as the previously described embodiments substantially.Like this, the outer circumferential face of the land portions 21a of first cylinder 21 just can with the inner peripheral surface 5 mutual slip joint of the land portions of the 3rd cylinder, about all be provided with the structure of slipping of first such cylinder 21 and the 3rd cylinder.Then, between the straight-tube portion 21b of first cylinder 21, utilize the seal ring 23 of rubber system to keep its liquid sealing.
The extensible flexible pipe joint of Fig. 3 has than the bigger advantage of pipe joint extending amount shown in Figure 1.And, the installation that on the extensible flexible pipe joint of Fig. 3, can also save the shroud of rubber system.Parts identical with Fig. 1 in Fig. 3 then give the piece number identical with Fig. 1.
(b) below, further specify other embodiment.In this pipe joint, as shown in Figure 4, (totally 8 places) form the teat 12 of band through hole on 4 positions of the outer circumferential face at the major diameter position of sleeve pipe 3 respectively, about the last formation of screw rod 13a, the 13b external screw thread 14 made of two 1 group bar steel.Can be screwed in the tapped hole of each teat 12, on the cardinal principle neutral position of 12,12 of relative above-mentioned teats, interconnect.Pairing left and right screw rod 13a, 13b are screwed on long nut 16 two ends two of forming opening respectively to be had and realizes among the end screw 16b connecting, and above-mentioned long nut has notch 16a in the roughly intermediate portion of its length direction.Two one group screw rod 13 that constitutes sets up respectively by between four groups eight the above-mentioned teats that form 12,12 about these, is respectively fixing with two nut screwing clampings near above-mentioned screw rod 13 outboard ends with near the teat 12.Also have, though be the example that four screw rods 13 are arranged shown in Fig. 4, and two, three all can, many more also can, its number is not limited especially.
Though screw rod 13 is in transportation or to carry out before construction under the situation such as the hydrostatic test be that expanding-contracting action as the restriction extensible flexible pipe joint is used, but its intensity will according to when running into excessive load such as setting of ground, make length direction substantially the notch 16a of the formed long nut 16 in intermediate portion rupture, set to bring into play the original free Telescopic that is had of pipe joint.The thin portion of long nut 16 shown in Fig. 5 a, Fig. 5 b illustrate pairing left and right screw rod 13a, 13b and are connected the state on the long nut 16.On the outer circumferential face of long nut 16, insert the also state of nested cylindrical shape long nut protecting jacket 18 shown in Fig. 5 b.This protecting jacket 18 can make it to avoid because of breaking because of carelessness by the notch 16a of protection long nut 16 when carrying extensible flexible pipe joint.Manufacturings such as long nut 16, protecting jacket 18, the most handy steel of screw rod 13a, 13b or alloyed steel.
Also have, the shape of long nut 16 does not just form otch continuously on the outer circumferential face of length direction cardinal principle intermediate portion, can partly form otch yet.Importantly, make this long nut 16 carry out when the transport pipe joint is whole or before the construction having under the occasion such as the hydrostatic test to be enough to the intensity of the expanding-contracting action that limits the retractable pipe joint, even and fracture when bearing excessive external force also can have been given play to the original function that can freely stretch flexible that has of pipe joint.
Claims (5)
1. extensible flexible pipe joint, it comprises:
First cylinder is made of a pair of sphere ring part that forms spherical calotte shape outer circumferential face (4);
Second cylinder is made of the sleeve that can insert described first cylinder in tube axis X direction with relatively moving;
The 3rd cylinder, it is coated on the outer circumferential face (4) of described first cylinder has the spherical shape inner peripheral surface (5) that can slide mutually, forms a pair of outer sleeve of joint (6) on two end part;
Described first cylinder, (1a, 1 ' a) is at wall (1b, 1 ' b, the 1c, 1 ' c) of formation cardinal principle in the front end and back end of tube axial direction with the tube axis normal to form annular groove on inner peripheral surface;
Described second cylinder, locking ring (17) can nestedly be fixed in the groove that is formed near the outer circumferential face in end, do the time spent as external force, (1b, 1 ' b, 1c, 1 ' c) can contact by formation face the described wall of the end face of locking ring (17) and the front end and back end of described first cylinder, move to limit it;
On each sliding position of described first cylinder and second cylinder and the 3rd cylinder, insert seal arrangement (8,9) respectively;
It is characterized in that form the teat (12) of band through hole on the major diameter place outer circumferential face of described the 3rd cylinder, the screw rod (13) that is screwed in this teat (12) through hole is erected between the teat (12) of a pair of described the 3rd cylinder, with the expanding-contracting action of no-go nipple;
Described screw rod (13) is made of a pair of screw rod (13a, 13b) that connects on the roughly neutral position between the described relative teat (12,12), these paired screw rods (13a, 13b) are screwed into length direction respectively and substantially have on the neutral position in the formed two opening screws in long nut (16) two ends of otch (16a) and realize linking, when bearing excessive external force, above-mentioned opening portion (16a) at first destroys, thereby recovers the flexible flexible of pipe joint.
2. according to the extensible flexible pipe joint described in the claim 1, it is characterized in that (1 ' a) is that (1 ' d) end diameter enlarges in echelon and forms horn-like (1 ' e) from the hole enlargement limited part to the annular groove of above-mentioned first cylinder.
3. according to the extensible flexible pipe joint described in claim 1 or 2, it is characterized in that, above-mentioned first cylinder has land portions (21a) and straight-tube portion (21b) to form, the function of described second cylinder of described land portions (21a) performance, at this moment, this extensible flexible pipe joint is made of first cylinder and the 3rd cylinder.
4. extensible flexible pipe joint according to claim 1 is characterized in that, two screws that form opening on the two ends of described long nut (16) all have the end.
5. extensible flexible pipe joint according to claim 4 is characterized in that, the outside of described long nut (16) is nested with protecting jacket (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991027868A CN1145752C (en) | 1999-03-03 | 1999-03-03 | Extensible flexible pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991027868A CN1145752C (en) | 1999-03-03 | 1999-03-03 | Extensible flexible pipe joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1266157A CN1266157A (en) | 2000-09-13 |
| CN1145752C true CN1145752C (en) | 2004-04-14 |
Family
ID=5270971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB991027868A Expired - Fee Related CN1145752C (en) | 1999-03-03 | 1999-03-03 | Extensible flexible pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1145752C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261534A (en) * | 2011-05-04 | 2011-11-30 | 同济大学 | Novel pipeline flexible joint with great deformation capability |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6200723B2 (en) * | 2013-08-08 | 2017-09-20 | 株式会社水道技術開発機構 | Telescopic flexible tube and method for assembling telescopic flexible tube |
| JP6228061B2 (en) | 2014-03-31 | 2017-11-08 | 株式会社水道技術開発機構 | Stretchable flexible tube with covering |
| CN105864540B (en) * | 2016-06-01 | 2018-06-05 | 中国航空工业集团公司西安飞机设计研究所 | A kind of self-enclosed slip compensation device |
| CN115183070B (en) * | 2022-06-29 | 2024-04-26 | 中国舰船研究设计中心 | Pressure balance type ball sleeve type deformation compensation device and system for sea pipeline |
-
1999
- 1999-03-03 CN CNB991027868A patent/CN1145752C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261534A (en) * | 2011-05-04 | 2011-11-30 | 同济大学 | Novel pipeline flexible joint with great deformation capability |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1266157A (en) | 2000-09-13 |
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According to article 9 of the patent law and article 13 of the detailed rules for the implementation of the patent law: 99102786.8 of the invention patents in this issue as a notice of authorization, and at the same time corresponding to the 99205783.3 utility model patent to be given up, and in the 20 volume of the 15 issue of the new type of communique on the patent right to abandon the announcement. |
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