CN1237682A - Pipe connection - Google Patents
Pipe connection Download PDFInfo
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- CN1237682A CN1237682A CN 99102073 CN99102073A CN1237682A CN 1237682 A CN1237682 A CN 1237682A CN 99102073 CN99102073 CN 99102073 CN 99102073 A CN99102073 A CN 99102073A CN 1237682 A CN1237682 A CN 1237682A
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Abstract
The invnetion is to realize the high efficiency and the labor saving of the connecting work of piping, to increase the pipe removal blocking force so as to prevent the removal of piping, and to prevent the water leaking accident. An expansion part (11) is formed at the end of the socket (9) of a fitting main body (4). A ring form packing (5) is provided at the expansion part (11), and a ring form retainer (6) allowable to contract its diameter is provided to cover the outer peripheral surface of the packing (5) and the outer side surface at the opposite side of the expansion part (11). In order to hold the retainer (6) and the expansion part (11) of the socket (9) from the outer side, a clamp (7) allowable to contract its diameter is fitted, the free end side of the clamp (7) is fastened by a bolt and a nut to contract the diameter, and while the inner peripheral edge of the retainer (6) is bitten in the outer periphery of the pipe (2), and the packing (5) is pressure contacted on the outer peripheral surface of the pipe (2).
Description
The present invention relates to effective pipe joint, particularly be suitable for the pipe joint of the pipe of the such lower pressure of the waste pipe of building or rainwater pipe.
In the prior art, as above-mentioned pipe joint, people know just like Fig. 8 or structure shown in Figure 9.Fig. 8 is a longitudinal sectional drawing example, that connect the back state of the pipe joint of expression prior art.Fig. 9 is in the longitudinal sectional drawing that connects preceding state for the state Lower Half another example, that the first half is in after the connection of the pipe joint of expression prior art.
The pipe joint 51 of type shown in Figure 8 constitutes in such a manner, promptly, the end of in the admittance mouth 54 of the adapter body 53 at the place, end that is formed at wherein one pipe 52, inserting another root pipe 55, the flange 56 of adapter body 53 and with the pressure ring 57 of pipe 55 periphery tabling by bolt 58, nut 59 is fixing, by making pressure ring 57 close to flange 56 1 sides, make on the periphery that is entrenched in pipe 55 between the connecting part of the connecting part of flange 56 and pressure ring 57, the annular seal of making by rubber 60 along tubular axis to being compressed, owing to result from the effect of the stress on the Sealing 60, can guarantee water proof power, and prevent to manage 55 and extract.
The pipe joint 51 of type shown in Figure 9 between the connecting part of the Sealing 60 of the pipe joint 51 of above-mentioned prior art example shown in Figure 8 and pressure ring 57, is provided with the metal ring 61 that prevents that tube drawing from using with heeling condition on the periphery of pipe 55.And, flange 56 is fixing by bolt 58, nut 59 with pressure ring 57, by making pressure ring 57 close to flange 56 1 sides, make Sealing 60 along tubular axis to being compressed, and make tube drawing prevent that the ring 61 of usefulness from erecting, its outer periphery and inner circumference edge are pressed against the connecting part and pipe 55 the outer circumferential face of pressure ring 57, under the effect of the stress that produces on this throw-on pressure and the Sealing 60, can prevent to manage 55 extract.
In the pipe joint 51 of the above-mentioned type, at pressure ring 57 and Sealing 60 and pipe 55 tablings to be connected, perhaps pressure ring 57, tube drawing prevent after the ring 61 of usefulness and Sealing 60 and pipe 55 tablings to be connected, pipe 55 is inserted the admittance mouth 54 of adapter body 53, in a plurality of positions along the circumferential direction, by bolt 58 and nut 59 fastening flanges 56 and pressure ring 57, will manage 52 and 55 be connected with pipe.
But, because above-mentioned pressure ring 57 and Sealing 60, perhaps pressure ring 57, tube drawing prevents that the ring 61 of usefulness and Sealing 60 from passing through bolt 58, nut 59 is assemblied on the adapter body 53 temporarily, or pack respectively with adapter body 53, therefore, will manage 55 with pipe 52 when being connected, pressure ring 57 and Sealing 60, perhaps pressure ring 57, tube drawing prevents that the ring 61 of usefulness and Sealing 60 from must pass through bolt 58, the mode that nut 59 is thrown off is pulled down from adapter body 53, again with pipe 55 tablings, or after must taking out from independent packed state, again with pipe 55 tablings, thereby, connect the more labour of operation cost.Particularly because the external diameter of the internal diameter of Sealing 60 and pipe 55 is identical or less than this external diameter, because of and pipe 55 between frictional force action is arranged, with Sealing 60 with manage 55 chimeric operation meetings and spend more labours.In addition, because flange 56 and pressure ring 57 fix by bolt 58 and nut 59 in a plurality of positions along the circumferential direction, so fastening force is inconsistent, can produce the situation of leaking.In addition, because the fixed position of bolt 58, nut 59 is more, to spend more labour in the time of so fixedly.
Have again, prevent that the tube drawing resistance that pipe to be connected 55 extracts is less, because this resistance just Sealing 60 and the frictional force of managing between 55 in pipe joint shown in Figure 8 51.In pipe joint shown in Figure 9 51, though have tube drawing to prevent the ring 61 of usefulness, the fastening force that flange 56 and pressure ring 57 produce only along tubular axis to effect, so tube drawing prevents that the power of ring 61 incision pipes 55 of usefulness is less, can not obtain bigger tube drawing resistance.In addition, because the wall of flange 56, pressure ring 57 is thicker, the weight of pipe joint 51 is bigger, the inconvenient operation in the time of so not only can making construction, and also it is also relatively poor to connect efficiency of operation.
The object of the present invention is to provide a kind of pipe joint, it can realize the connection operation of pipe at an easy rate, and the connection efficiency of operation of pipe is improved, and makes this operation laborsaving.
Another object of the present invention is to provide a kind of pipe joint, it can positively keep this pipe under the state that pipe connects, therefore can prevent extracting of pipe really, prevents leakage accident, improves reliability.
An also purpose of the present invention is to provide a kind of pipe joint, but the heat of its absorption tube is flexible, and is the occasion of lined steel pipe at pipe to be connected, prevents to begin to take place corrosion from pipe end, therefore can improve reliability and durability etc.
In order to address the above problem, pipe joint of the present invention comprises: adapter body, but this adapter body insertion tube, and have the admittance mouth that the mode that enlarges according to the end forms; Sealing, the sealing part is provided with according to the mode that pipe can be inserted the expansion section of above-mentioned admittance mouth, and has water isolating; Retainer, it is provided with according to the mode that the outer side surface with the outer circumferential face of above-mentioned Sealing and an opposite side with the expansion section of above-mentioned admittance mouth encases, and is made of peripheral plate and side plate, but it is made of metal the ring-type of diameter reduction; Anchor clamps, these anchor clamps comprise jig main body and fastening piece, but this jig main body forms according to the mode of diameter reduction, it is provided with according to the mode from the expansion section of above-mentioned retainer of outside clamping and above-mentioned admittance mouth, this fastening piece is according to the fixing above-mentioned jig main body of the mode that can make the jig main body diameter reduction, by above-mentioned fastening piece above-mentioned jig main body is fixed, thereby make above-mentioned retainer and above-mentioned Sealing diameter reduction, above-mentioned Sealing is pressed against on the pipe that inserts in the above-mentioned admittance mouth, and can makes the interior perimembranous incision aforementioned tube of the side plate of above-mentioned retainer.
In order to address the above problem, another pipe joint of the present invention comprises rubber-like elastic body, and it is arranged at the inner side step portion of the admittance mouth of adapter body, and between and insert between the end face of pipe of above-mentioned admittance mouth, it is used to prevent that pipe end from producing corrosion, and absorption tube is because of stretching that thermal expansion causes.
In addition, be preferably in above-mentioned each structure, the interior perimembranous of the side plate of retainer is close gradually above-mentioned adapter body one side earth tilt along with approaching inner circumference edge.
Best, above-mentioned retainer has the cut-out portion that makes up according to the mode that can along the circumferential direction slide, and according to can the mode of diameter reduction forms by the slip of this cut-out portion, in addition, above-mentioned jig main body comprises a pair of strip-shaped parts and bindiny mechanism, this bindiny mechanism connects between the end opening or closing according to the mode that can make this strip-shaped parts carry out folding along the flexible direction of diameter, this jig main body constitutes by the fixing mode of fastening piece according to the free end of above-mentioned two strip-shaped parts, in addition, the Sealing inner peripheral surface forms the form that enlarges gradually along with the inner circumference edge of the side plate that approaches retainer with admitting a mouthful opposite side at least.
If the pipe joint of the present invention that adopts aforesaid way to constitute, under the state of the admittance mouth that pipe to be connected can be inserted adapter body, Sealing, retainer and anchor clamps are assemblied in the expansion section of the admittance mouth of adapter body, thereby after will managing the admittance mouth that inserts Sealing and adapter body, can only finish the connection operation by the fastening piece mode that jig main body is fixing.
In addition, in the inner side step portion that admits mouthful with insert between the end face of the pipe of admitting mouthful and be provided with rubber-like elastic body, heat that can absorption tube is flexible, in addition, is the occasion of lined steel pipe at pipe to be connected, can prevent from pipe end generation corrosion.
In addition, because the interior perimembranous of the side plate of retainer is close gradually adapter body one side earth tilt along with approaching inner circumference edge, retainer by anchor clamps be fixed in pipe axially and radially, the interior perimembranous of retainer is along preventing its direction of extracting incision pipe, thereby the power of retainer incision pipe is bigger, can positively keep this pipe under the state that pipe connects.
A description will be given of an embodiment in accordance with the present invention with reference to the accompanying drawings.
Fig. 1 for expression the present invention the 1st embodiment's pipe joint, connect before the longitudinal sectional drawing of state;
Fig. 2 for expression aforementioned tube joint, along the sectional drawing of the A-A line among Fig. 1;
The perspective view of the retainer that Fig. 3 is adopted for the above-mentioned joint of expression;
Fig. 4 is expression the present invention the 2nd embodiment's sectional drawing pipe joint, identical with Fig. 2;
The enlarged perspective of the part of the anchor clamps that Fig. 5 is adopted for expression aforementioned tube joint;
Fig. 6 for expression the present invention the 3rd embodiment's pipe joint, connect before the local longitudinal sectional drawing of state;
Fig. 7 for expression the present invention the 4th embodiment's pipe joint, connect before the local longitudinal sectional drawing of state;
Fig. 8 is the longitudinal sectional drawing of an example of the pipe joint of expression prior art;
Fig. 9 is in the longitudinal sectional drawing that connects preceding state for the state Lower Half another example, that the first half is in after the connection of the pipe joint of expression prior art.
At first, the 1st embodiment of the present invention is described.Fig. 1 is the present invention the 1st embodiment's longitudinal sectional drawing pipe joint, that connect preceding state; Fig. 2 be the aforementioned tube joint, along the sectional drawing of the A-A line among Fig. 1; The perspective view of the retainer that Fig. 3 is adopted for the aforementioned tube joint.
As shown in Figure 1, 2, pipe 1 is connected with pipe 2 pipe joints 3 by present embodiment.The pipe joint 3 of present embodiment is made of the adapter body 4 that is formed at pipe 1 end, Sealing 5, retainer 6, anchor clamps 7, rubber-like elastic body (Sealing) 8.The admittance mouth 9 that above-mentioned adapter body 4 has enlarged-diameter and inserts for the end of pipe 2, the inboard of this admittance mouth 9 has stepped part 10, and its front end has the expansion section 11 that enlarges towards front end one side.In this expansion section 11, perimembranous forms and keeps vertical vertical surface 12 substantially with the axle center in it, and towards the plane of inclination 13 that front end one side becomes the obtuse angle to tilt, its integral body forms horn-like from vertical surface 12 in its peripheral part formation.
Anchor clamps 7 are by jig main body 17, constitute as bolt 18, the nut 19 of fastening piece.But above-mentioned jig main body 17 is made of a pair of strip- shaped parts 20,21 is connected these strip- shaped parts 20,21 with mode with folding bonded block 22.As an example, each strip- shaped parts 20,21 is made by the metal of thin-walled, and side plate 24,25 becomes whole with the both sides of peripheral plate 23 and is connected, and two side plates 24,25 are according to along with tilting from peripheral plate 23 to the mode that inner circumference edge its spacing enlarges gradually.Each end of each strip- shaped parts 20,21 is formed with connecting part 26, bonded block 22 combines with this connecting part 26, this bonded block 22 is by shaft like parts bending and forms, each strip- shaped parts 20,21 according to bonded block 22 be fulcrum, also can folding on the flexible direction of diameter mode connect.These strip- shaped parts 20,21 are set to: two side plates 24,25 stride across the inclination outside and the inclined side panel 15 retainer 6 and peripheral parts expansion section 11 opposite sides of expansion section 11, and chimeric with the mode that holds them and they.The free end of each strip- shaped parts 20,21 has formed and has connected with protuberance 27, relatively is formed with fixing usefulness hole 28 two connections on protuberance 27.In addition, the axial region of bolt 18 passes this hole 28, and nut 19 is threaded with the outside protuberance of the axial region of bolt 18, and strip- shaped parts 20,21 is fixing, thereby can make its reduced.
Rubber-like elastic body 8 is formed on ring-type flat on the width direction, and it is to insert with the mode of stepped part 10 applyings of admitting mouth 9, and it is used for absorption tube because of stretching that thermal expansion produces, and the end face of killer tube 2 produces corrosion.
Come the connecting moves of connecting tube to be described to the pipe joint 3 that adopts said structure below.When dispatching from the factory, Sealing 5 is provided with according to the mode that the face 12,13 with the expansion section 11 of admitting mouth 9 fits, retainer 6 is according to cooperating the mode that Sealing 5 is encased to be provided with expansion section 11, strip- shaped parts 20,21 in the jig main body 17 is according to the mode tabling that strides across expansion section 11 and retainer 6, the axial region of bolt 18 passes the fixing hole 28 with protuberance 27 of strip- shaped parts 20,21, nut 19 is connected with the outside protuberance of this axial region with the screw thread combination, realize temporary fixedly, Sealing 5, retainer 6, anchor clamps 7 are assemblied on the adapter body 4.In addition, rubber-like elastic body 8 also assembles according to the mode that the stepped part 10 with admittance mouth 9 fits.At this moment, rubber-like elastic body 8 is set for and is not easy from admitting mouthful 9 modes of throwing off.
In addition, when the connection operation of carrying out between the pipe, after cutting off pipe 2, also the burr of end is cut off in removal, on pipe 2, mark the degree of depth in the insertion tube joint 3.Then, pipe 2 is cut off the admittance mouth 9 that end one side is inserted Sealing 5 and adapter body 4 from it, contact with rubber-like elastic body 8 until its front end.When carrying out above-mentioned insert action, as mentioned above,, admit in mouthfuls 9 so can be at an easy rate will pipe 2 insert because the internal diameter of above-mentioned Sealing 5 sets according to the mode greater than the external diameter of pipe 2 slightly.And, only jig main body 17 is fixing by bolt 18, the nut 19 of a position, just can finish the connection operation.
By fixing of above-mentioned jig main body 17, because the expansion section 11 of the admittance mouth 9 of adapter body 4 is in the precalculated position, with retainer 6 and Sealing 5 in expansion section 11 1 side tractions of the axial admittance mouth 9 of pipe 2, they realize undergauge along the caliber direction.Be accompanied by above-mentioned action, the inner peripheral surface of Sealing 5 is pressed against on the outer circumferential face of pipe 2, therefore obtains water proof power.In addition, because retainer 6 produces undergauge, the interior perimembranous of side plate 16 embeds the periphery of pipe 2 in the opposite direction from the side of extracting with pipe 2, and this side plate 16 is according to forming near the mode of admitting mouthful 9 one sides gradually along with approaching inner circumference edge.Therefore, when will extracting pipe 2 the time because this pipe erects in the angle of inclination bigger mode of relative tube's axis of the side plate 16 of retainer 6, thus the power that embeds in the pipe 2 strengthen all the more, thereby obtain bigger tube drawing resistance.In addition; owing to be provided with rubber-like elastic body 8 in the mode that presses with managing between 2 the end face in the stepped part 10 of the inner of the admittance mouth 9 of adapter body 4; so at pipe 2 is the occasion of lined steel pipe; can provide protection to pipe end; can suppress to get rusty; and when making pipe flexible because of thermal expansion, its extending amount can be absorbed by the thickness of rubber-like elastic body 8.And, in above-mentioned connection operation,, the overall weight of pipe joint 3 is alleviated because the thickness of the strip- shaped parts 20,21 of retainer 6 and jig main body 17 can be done than books such as the flange in the above-mentioned prior art example, pressure rings, operation when being convenient to construct helps to improve operating efficiency.
Below, the 2nd embodiment of the present invention is described.Fig. 4 is expression the present invention the 2nd embodiment's sectional drawing pipe joint, identical with Fig. 2; Fig. 5 is the enlarged perspective of the part of the anchor clamps that adopted in the expression aforementioned tube joint.
In the above-described embodiments, can carry out the mechanism that folding ground connects along the flexible direction of diameter as a pair of strip- shaped parts 20,21 that will constitute jig main body 17, bonded block 22 combines with the connecting part 26 of the end that is formed at strip-shaped parts 20,21.Relative therewith, in the present embodiment, other example as the bindiny mechanism of strip- shaped parts 20,21, shown in Fig. 4,5, make connecting plate (leaf spring) 30 by the rubber-like thin-wall metal, these connecting plate 30 two ends are fixed in by spot welding 31 grades on each end inner face of peripheral plate 23 of a pair of strip- shaped parts 20,21 that constitutes jig main body 17, utilize the elasticity of connecting plate 30, can make strip- shaped parts 20,21 foldings, but and diameter reduction.Because of other structure is identical with above-mentioned the 1st embodiment,, and omit explanation to it so identical part adopts identical label.
Below the 3rd embodiment of the present invention is described.Fig. 6 is expression the present invention the 3rd embodiment's local longitudinal sectional drawing pipe joint, that connect preceding state.
In the present embodiment, as shown in Figure 6, the inner peripheral surface of Sealing 5 is along with forming gradually the circular-arc cross section that enlarges from axial intermediate portion to two side, the inner circumference edge of the side plate 16 of retainer 6 is configured to substantially the identical form of diameter with the end inner circumference edge of side plate 16 1 sides of Sealing 5.By above-mentioned structure, to manage 2 insertion Sealings 5 and admit mouth at 9 o'clock, even the axle center at pipe 2 has under the situation of some inclinations with respect to Sealing 5 and the axle center of admitting mouth 9, pipe 2 still can be subjected to the expansion section guiding of the inner peripheral surface of Sealing 5, and the inboard of successfully inserting Sealing 5 and admitting mouth 9.In addition, Sealing 5 can form the form that enlarges gradually along with the inner circumference edge of the side plate 16 that approaches retainer 6 with the inner peripheral surface of admitting mouthful 9 opposite sides at least.Other structure is identical with the above-mentioned the 1st or the 2nd embodiment's.
Below the 4th embodiment of the present invention is described.Fig. 7 is expression the present invention the 4th embodiment's local longitudinal sectional drawing pipe joint, that connect preceding state.
In above-mentioned the 1st embodiment, insert and form flat ring-type according to the mode that fits with the stepped part 10 of admitting mouthfuls 9 with the contacted rubber-like elastic body 8 of the end face of pipe 2, but as shown in Figure 7, the rubber-like elastic body in the present embodiment 8 is and has the ring-type of otch with pipe 2 the contacted side of end face.The rubber-like elastic body 8 of present embodiment because the spring-back force by otch presses the end face of pipe 2, thereby can be further effectively absorption tube because of thermal expansion cause flexible, can prevent to manage the corrosion of 2 end faces.Other structure is identical with the 3rd embodiment's.
In addition, Sealing 5 form incision-like with 2 contacted of pipes, even the footpath is slightly smaller than under the situation of external diameter of pipe 2 so within it, still can at an easy rate will pipe 2 insertions.In addition, the present invention can carry out various design alterations in the scope of not leaving its basic fundamental design.
As mentioned above, adopt pipe joint of the present invention, under the state of the admittance mouth that pipe to be connected is inserted adapter body, in advance Sealing, retainer and anchor clamps are assemblied in the expansion section of admittance mouth of adapter body, thereby after will managing the admittance mouth that inserts Sealing and adapter body, only jig main body is fixed, just realized the connection between the pipe by fastening piece.In the manner described above, can carry out the connection operation of pipe at an easy rate.Therefore, the effect of the connection operation of pipe is improved, make this operation laborsaving.Particularly, if make the reduced thickness of jig main body, weight reduction, therefore the operation in the time of then can being convenient to construct, can further make pipe connect efficiency of operation and improve, and makes this operation laborsaving.
Have, in the inner side step portion that admits mouthful with insert between the end face of the pipe in the above-mentioned admittance mouth rubber-like elastic body is set, but the heat of absorption tube is flexible again, and is the occasion of lined steel pipe at pipe to be connected, can prevent from pipe end generation corrosion.Therefore, can improve reliability, durability etc.
Also have, because the interior perimembranous of the side plate of retainer is close gradually adapter body one side earth tilt along with approaching inner edge, retainer can be fixed in axially and directly making progress of pipe by anchor clamps, because the direction that the interior perimembranous of retainer is extracted along prevention is cut in the pipe, retainer is stronger towards the incision power of pipe, can be under the state that pipe connects holding tube effectively.Therefore, can prevent extracting of pipe really, can prevent leakage accident, can improve reliability.
Claims (6)
1. a pipe joint is characterized in that, comprising: adapter body, but this adapter body insertion tube, and have the admittance mouth that the mode that enlarges according to its end forms; Sealing, the sealing part is provided with according to the mode that pipe can be inserted the expansion section of above-mentioned admittance mouth, and it has water isolating; Retainer, it is provided with according to the mode that the outer side surface with the outer circumferential face of above-mentioned Sealing and an opposite side with the expansion section of above-mentioned admittance mouth encases, and it is made of peripheral plate and side plate, but it is made of metal the ring-type of diameter reduction; Anchor clamps, these anchor clamps comprise jig main body and fastening piece, but this jig main body forms according to the mode of diameter reduction, and be provided with according to mode from the expansion section of above-mentioned retainer of outside clamping and above-mentioned admittance mouth, this fastening piece is according to the fixing above-mentioned jig main body of the mode that can make the jig main body diameter reduction, by above-mentioned fastening piece above-mentioned jig main body is fixed, make above-mentioned retainer and above-mentioned Sealing diameter reduction thus, above-mentioned Sealing is pressed against on the pipe that inserts in the above-mentioned admittance mouth, and can makes the inner circumference edge portion incision aforementioned tube of the side plate of above-mentioned retainer.
2. pipe joint according to claim 1, it is characterized in that, comprise rubber-like elastic body, it is arranged at the inner side step portion of the admittance mouth of adapter body, and between and insert between the end face of pipe of above-mentioned admittance mouth, it is used to prevent that pipe end from producing corrosion, and absorption tube is because of stretching that thermal expansion causes.
3. pipe joint according to claim 1 and 2 is characterized in that, the interior perimembranous of the side plate of retainer is close gradually above-mentioned adapter body one side earth tilt along with approaching inner circumference edge.
4. according to any one the described pipe joint in the claim 1～3, it is characterized in that retainer has the cut-out portion that can along the circumferential direction make up slidably, this retainer is so that the mode of diameter reduction forms by the slip of this cut-out portion.
5. according to any one the described pipe joint in the claim 1～4, it is characterized in that, above-mentioned jig main body comprises a pair of strip-shaped parts and bindiny mechanism, this bindiny mechanism connects between the end opening or closing according to the mode that can make this strip-shaped parts carry out folding along the flexible direction of diameter, forms the form that the free end of above-mentioned two strip-shaped parts is fixed by fastening piece.
6. according to any one the described pipe joint in the claim 1～5, it is characterized in that, Sealing form the form that enlarges gradually along with the inner circumference edge of the side plate that approaches retainer with the inner peripheral surface of admitting a mouthful opposite side at least.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP71260/98 | 1998-03-06 | ||
| JP10071260A JP3135228B2 (en) | 1998-03-06 | 1998-03-06 | Pipe fittings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1237682A true CN1237682A (en) | 1999-12-08 |
Family
ID=13455586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99102073 Pending CN1237682A (en) | 1998-03-06 | 1999-03-05 | Pipe connection |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3135228B2 (en) |
| CN (1) | CN1237682A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615611A (en) * | 2013-12-16 | 2014-03-05 | 文登鸿通管材有限公司 | Connecting structure of fiber-reinforced composite pipe |
| CN103629463A (en) * | 2013-12-16 | 2014-03-12 | 文登鸿通管材有限公司 | Connecting structure for multi-layer continuous composite tubes |
| CN104154524A (en) * | 2014-07-08 | 2014-11-19 | 广西田东南华糖业有限责任公司一糖厂 | Safety device at joint between water inlet pipe base and water inlet pipe flange in boiler drum |
| CN114502864A (en) * | 2019-10-18 | 2022-05-13 | 株式会社久保田 | Ring body, pipe joint, and pipe joining method |
-
1998
- 1998-03-06 JP JP10071260A patent/JP3135228B2/en not_active Expired - Fee Related
-
1999
- 1999-03-05 CN CN 99102073 patent/CN1237682A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615611A (en) * | 2013-12-16 | 2014-03-05 | 文登鸿通管材有限公司 | Connecting structure of fiber-reinforced composite pipe |
| CN103629463A (en) * | 2013-12-16 | 2014-03-12 | 文登鸿通管材有限公司 | Connecting structure for multi-layer continuous composite tubes |
| CN104154524A (en) * | 2014-07-08 | 2014-11-19 | 广西田东南华糖业有限责任公司一糖厂 | Safety device at joint between water inlet pipe base and water inlet pipe flange in boiler drum |
| CN114502864A (en) * | 2019-10-18 | 2022-05-13 | 株式会社久保田 | Ring body, pipe joint, and pipe joining method |
| CN114502864B (en) * | 2019-10-18 | 2024-04-30 | 株式会社久保田 | Pipe joint and pipe joining method |
| US12013060B2 (en) | 2019-10-18 | 2024-06-18 | Kubota Corporation | Ring body, pipe fitting, and method for joining pipes |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11257557A (en) | 1999-09-21 |
| JP3135228B2 (en) | 2001-02-13 |
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