CN112178326A - Extrusion type flexible pipe joint of hot melting machine - Google Patents
Extrusion type flexible pipe joint of hot melting machine Download PDFInfo
- Publication number
- CN112178326A CN112178326A CN202011065590.8A CN202011065590A CN112178326A CN 112178326 A CN112178326 A CN 112178326A CN 202011065590 A CN202011065590 A CN 202011065590A CN 112178326 A CN112178326 A CN 112178326A
- Authority
- CN
- China
- Prior art keywords
- joint
- hot
- flexible pipe
- melting
- inner core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/34—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with bonding obtained by vulcanisation, gluing, melting, or the like
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Branch Pipes, Bends, And The Like (AREA)
Abstract
The invention provides a hot-melt mechanical extrusion type flexible pipe joint, which belongs to the technical field of oil exploitation pipeline joints and comprises the following components: one end of the hollow joint inner core is sleeved by the flexible pipe, and the hot-melting inner joint is sleeved on the flexible pipe and sleeved outside one end of the joint inner core; the outer end of the joint inner core is detachably connected with the outer end of the joint inner core, and the flexible pipe and the hot-melting inner joint are positioned between the outer wall of the joint inner core and the inner wall of the joint outer sleeve; the hot-melting inner joint can be welded with the flexible pipe by heating, and the welded hot-melting inner joint and the flexible pipe are squeezed between the outer wall of the joint inner core and the inner wall of the joint outer sleeve. The hot-melting inner joint and the flexible pipe are welded together, the preassembled joint outer sleeve is moved to the joint inner core in a moving mode and is connected through the threads and tightly presses the flexible pipe and the hot-melting inner joint, and tensile and pressure resistance and connection sealing performance of hot-melting connection are improved.
Description
Technical Field
The invention relates to the technical field of oil exploitation pipeline joints, in particular to a hot-melt mechanical extrusion type flexible pipe joint.
Background
At present, oil and gas exploitation is mainly achieved by flexible pipelines, the distance between the oil and the gas and the ground or sea level is hundreds of meters or thousands of meters, the pipelines can be connected in sections in the oil and gas exploitation and transportation processes, and joints connected in the middle are of great importance to the whole project.
However, most of the connection forms of the currently applied flexible pipe joints are rigid connection, the sealing performance cannot meet the requirements, the size design and the processing are difficult, the operation is difficult when the pipeline is connected with the joints, the connection stability is poor, the tensile and pressure resistance is reduced after long-time use, and the flexible pipe joints are easy to fall off.
Disclosure of Invention
The invention aims to provide a hot-melt mechanical extrusion type flexible pipe joint which is stable in connection and good in sealing through hot-melt connection and mechanical extrusion, and aims to solve at least one technical problem in the background technology.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a hot-melt mechanical extrusion type flexible pipe joint, which comprises:
the hot-melting inner joint is sleeved on the flexible pipe and sleeved outside one end of the joint inner core;
a joint outer sleeve is sleeved outside the hot-melting inner joint and detachably connected with the other end of the joint inner core, so that the flexible pipe and the hot-melting inner joint are positioned between the outer wall of the joint inner core and the inner wall of the joint outer sleeve;
the hot-melting inner joint can be welded with the flexible pipe by heating, and the welded hot-melting inner joint and the flexible pipe are squeezed between the outer wall of the joint inner core and the inner wall of the joint outer sleeve.
Preferably, the pipe wall of the hot-melting inner joint is internally provided with an electric heating wire in a spiral manner, and the pipe wall of the hot-melting inner joint is provided with jacks connected with two ends of the electric heating wire.
Preferably, the outer wall of the other end of the joint inner core is provided with an annular boss, the radial end face of the boss is provided with an external thread, the inner wall of one end, connected with the joint inner core, of the joint outer sleeve is provided with an internal thread, and the joint inner core and the joint outer sleeve are connected in a threaded detachable mode through the internal thread and the external thread.
Preferably, the end surfaces of the hot-melt nipple and the flexible pipe are in contact with the end surface of the annular boss facing the flexible pipe.
Preferably, the inner wall of the joint outer sleeve is provided with a first annular groove for accommodating the hot-melt inner joint.
Preferably, the end surface of the first annular groove far away from the annular boss is a first inclined surface; the end face, far away from the annular boss, of the hot-melt inner connector is a second inclined face matched with the first inclined face.
Preferably, the first inclined plane is formed by gradually thinning the pipe wall thickness of the joint outer sleeve from one end far away from the annular boss to one end close to the annular boss;
the second inclined plane is formed by the fact that the thickness of the pipe wall of the hot-melting inner joint becomes thinner gradually from one end close to the annular boss to one end far away from the annular boss.
Preferably, a second annular groove is formed in the outer wall of the joint inner core.
Preferably, a chamfer is arranged between the end face of one end, far away from the annular boss, of the joint inner core and the outer surface.
Preferably, a sealing gasket is arranged between the hot-melting inner joint and the annular boss; the connector inner core is provided with a sealing groove, and a sealing ring is arranged in the sealing groove.
The invention has the beneficial effects that: the hot melting joint and the flexible pipe are welded together, and then the pre-assembled joint outer sleeve is moved to the joint inner core to be connected through threads and tightly press the flexible pipe and the hot melting joint; the defects that the hot-melt connection pressure-bearing is not enough and the mechanical connection sealing is not good are overcome, a better tensile and compressive structure is provided, the sealing performance of the flexible pipe joint is improved, the tensile and compressive capacity is improved, the flexible pipe joint is prevented from falling off, the service life is prolonged, the equipment damage rate is reduced, and the oil exploitation cost is reduced.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural view of a hot-melt mechanical extrusion type flexible pipe joint according to an embodiment of the present invention.
Fig. 2 is a sectional structural view of a hot-melt nipple according to an embodiment of the present invention.
Fig. 3 is a cross-sectional structural view of a joint outer sleeve according to an embodiment of the present invention.
Fig. 4 is a sectional structural view of a joint core according to an embodiment of the present invention.
Fig. 5 is a sectional view showing a structure of a flexible pipe according to an embodiment of the present invention after being coupled to a flexible pipe joint.
Wherein: 1-a flexible tube; 2-a joint inner core; 3-hot-melt inner joint; 4-a joint outer sleeve; 5-electric heating wire; 6-annular boss; 7-external threads; 8-internal threads; 9-a first annular groove; 10-a first bevel; 11-a second bevel; 12-a second annular groove; 13-chamfering; 14-a sealing gasket; 15-sealing groove; 16-sealing ring.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by way of the drawings are illustrative only and are not to be construed as limiting the invention.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
In the description of the present specification, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the description of the present specification, the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, only for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present technology.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," "coupled," and "disposed" are intended to be inclusive and mean, for example, that they may be fixedly coupled or disposed, or that they may be removably coupled or disposed, or that they may be integrally coupled or disposed. The specific meaning of the above terms in the present technology can be understood by those of ordinary skill in the art as appropriate.
For the purpose of facilitating an understanding of the present invention, the present invention will be further explained by way of specific embodiments with reference to the accompanying drawings, which are not intended to limit the present invention.
It should be understood by those skilled in the art that the drawings are merely schematic representations of embodiments and that the elements shown in the drawings are not necessarily required to practice the invention.
Examples
In order to overcome the defects of insufficient pressure bearing of hot-melt connection and poor mechanical connection sealing, provide a better tensile and compressive structure and improve the sealing performance of a flexible pipe joint, the embodiment of the invention provides a hot-melt mechanical extrusion type flexible pipe joint. The connection of flexible pipe joint and flexible pipe is realized through hot melt connection, and mechanical connection is adopted to extrude the bonding pipeline to assemble and play the role of anti-drop and sealing. In the process of assembling the joint, the hot-melting inner joint and the flexible pipe are welded together by adopting an electric melting method, and then the joint outer sleeve and the joint inner core are screwed up through threads, so that the connection and sealing effects of the hot-melting inner joint are realized under the extrusion effect.
As shown in fig. 1, the hot-melt mechanical extrusion type flexible pipe joint provided by the embodiment of the invention includes a hollow joint inner core 2, and when a flexible pipe is connected, the flexible pipe is sleeved at the left end of the hollow joint 2. Also included is a hot melt nipple 3 for fitting over the flexible tube.
A joint outer sleeve 4 is sleeved outside the hot-melting inner joint 3, the joint outer sleeve 4 is detachably connected with the other end of the joint inner core 2, and the flexible pipe 1 and the hot-melting inner joint 3 are located between the outer wall of the joint inner core 2 and the inner wall of the joint outer sleeve 4.
The hot-melting inner joint 3 can be welded with the flexible pipe 1 by heating, and the welded hot-melting inner joint 3 and the flexible pipe 1 are squeezed between the outer wall of the joint inner core 2 and the inner wall of the joint outer sleeve 4, so that the connection between the hot-melting inner joint 3 and the flexible pipe 1 is realized.
As shown in fig. 2, a spiral heating wire 5 is disposed in a pipe wall of the hot-melting nipple 3, a plug connected to an external power source is inserted into the plug, and two electrodes on the plug are electrically connected to two ends of the heating wire 5, respectively, so that the heating wire 5 is energized to generate heat.
In the embodiment, the hot-melt inner joint 3 is made of thermoplastic plastics, and the shape of the hot-melt inner joint 3 needs to be processed into a shape matched with the joint outer sleeve 4 in mounting during processing, so that the hot-melt inner joint is convenient to mount and provides tensile and compressive effects. In practice, the material from which nipple 3 is made is not limited to the thermoplastic materials mentioned above, and those skilled in the art will be able to select a suitable nipple 3 of corresponding material according to the actual circumstances.
As shown in fig. 3 and 4, an annular boss 6 is arranged on the outer wall of the other end of the joint inner core 2, an external thread 7 is arranged on the radial end face of the annular boss 6, an internal thread 8 is arranged on the inner wall of one end, connected with the joint inner core 2, of the joint outer sleeve 4, and the joint inner core 2 and the joint outer sleeve 4 are in threaded detachable connection through the matching of the internal thread 8 and the external thread 7.
The end faces of the hot-melt nipple 3 and the flexible pipe 1 abut against the end face of the annular projection 6 facing the flexible pipe 1. The annular boss 6 plays a role in clamping and fixing the hot-melting inner joint 3 and the flexible pipe 1.
The inner wall of the joint outer sleeve 4 is provided with a first annular groove 9 for accommodating the hot-melt inner joint 3.
The end surface of the first annular groove 9 far away from the annular boss 6 is a first inclined surface 10; the end surface of the hot-melting inner joint 3 far away from the annular boss 6 is a second inclined surface 11 matched with the first inclined surface 10. The second inclined surface 11 is configured to facilitate the insertion of the hot-melt inner joint 3 into the joint outer sleeve 4, and the first inclined surface 10 matched with the second inclined surface 11 is configured at the end surface of the first annular groove 9, so that the contact is more intimate and the connection is more stable and sealed.
As shown in fig. 3, the first inclined surface 10 is formed by the pipe wall thickness of the joint outer sleeve 4 gradually thinning from the end away from the annular boss 6 to the end close to the annular boss 6.
As shown in fig. 2, the second inclined surface 11 is formed by the thickness of the pipe wall of the hot-melt nipple 3 becoming thinner from the end close to the annular boss 6 to the end far from the annular boss 6.
As shown in fig. 4, the outer wall of the joint inner core 2 is provided with a second annular groove 12. The arrangement of the second annular groove 12 enables the interference seal of the hot-melting inner joint 3 and the flexible pipe 1 after welding and assembling, and the compression resistance and the tensile resistance are improved.
And a chamfer 13 is arranged between the end surface of one end of the joint inner core 2, which is far away from the annular boss 6, and the outer surface. The chamfer 13 prevents the end faces of the joint inner core 2 from blocking each other in the process of inserting the flexible pipe 1, and the joint inner core 2 is convenient to insert into the flexible pipe 1.
A sealing gasket 14 is arranged between the hot-melting nipple 3 and the annular boss 6. The sealing gasket 14 ensures the sealing performance after welding of the flexible pipe 1 and the hot-melt nipple 3.
Referring to fig. 1 and 4, meanwhile, 2 sealing grooves 15 are formed in the left end of the joint inner core 2, specifically, the 2 sealing grooves 15 are located on the left side of the second annular groove 12, and a sealing ring 16 is sleeved in each sealing groove 15. The sealing performance of the flexible pipe to joint connection is further increased by the cooperation of the sealing groove 15 and the sealing ring 16.
In the implementation, as shown in fig. 5, when the connection is implemented specifically, the joint outer sleeve 4 and the hot-melt inner joint 3 are sequentially sleeved on the flexible pipe 1, and the two components slightly slide leftwards, so that the jack on the hot-melt inner joint 3 is not blocked by the joint outer sleeve 4, thereby facilitating the operation of the subsequent installation procedure; plugging a sealing gasket 14 at the inner end of the joint inner core 2; the flexible pipe 1 is sleeved into the joint inner core 2, and the installation process can be assisted by a heating method, so that interference fit is realized.
Polishing and cleaning the connecting end of the flexible pipe 1 and the joint, and facilitating heat welding; sliding the hot-melting inner joint 3 to the annular boss 6, and aligning the contact end of the flexible pipe and the joint inner core 2; inserting a plug connected with an external power supply into the jack, electrifying the external power supply to enable the heating wire 5 to generate heat, heating the hot-melting inner joint 3 to realize the welding of the hot-melting inner joint 3 and the flexible pipe 1, and standing and cooling for more than 30 minutes to ensure good welding; and sliding the joint outer sleeve 4 towards one end of the joint and screwing threads to realize the simultaneous extrusion action on the hot-melting inner joint 3 and the flexible pipe 1, thereby achieving the effects of sealing and resisting tension.
In summary, the hot-melt mechanical extrusion type flexible pipe joint according to the embodiment of the present invention adopts a form of combining hot-melt connection and mechanical connection, and first welds the hot-melt inner joint 3 and the flexible pipe 1 together by an electric melting method, and then moves the pre-assembled joint outer sleeve 4 to the joint inner core 2 to connect and compress the flexible pipe 1 and the hot-melt inner joint 3 through threads. The joint outer sleeve 4 plays a role in clamping and fixing the hot-melting inner joint 3, and meanwhile, the tail end is provided with threads matched with the joint inner core 2 in an installing mode; the joint inner core 2 is designed with a step shape (namely a second annular groove 12), so that the interference sealing and tensile resistance effects after the hot-melting inner joint 3 and the flexible pipe 1 are welded and assembled are achieved, and meanwhile, the tail end is designed with threads, so that the connection effect when the joint inner core and the joint outer sleeve 4 are assembled is achieved; a sealing gasket 14 is located between the flexible pipe 1 and the annular boss 6, and a sealing groove 15 and a sealing ring 16 on the joint core 2 cooperate to seal.
The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.
Although the present disclosure has been described with reference to the specific embodiments shown in the drawings, it is not intended to limit the scope of the present disclosure, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive faculty based on the technical solutions disclosed in the present disclosure.
Claims (10)
1. The utility model provides a flexible coupling of hot melt mechanical extrusion formula which characterized in that includes:
one end of the hollow joint inner core (2) is sleeved by the flexible pipe (1), and the hot-melting inner joint (3) is sleeved on the flexible pipe (1) and sleeved outside one end of the joint inner core (2);
a joint outer sleeve (4) is sleeved outside the hot-melting inner joint (3), the joint outer sleeve (4) is detachably connected with the other end of the joint inner core (2), and the flexible pipe (1) and the hot-melting inner joint (3) are located between the outer wall of the joint inner core (2) and the inner wall of the joint outer sleeve (4);
the hot-melting inner joint (3) can be welded with the flexible pipe (1) by heating, and the hot-melting inner joint (3) and the flexible pipe (1) after being welded are squeezed between the outer wall of the joint inner core (2) and the inner wall of the joint outer sleeve (4).
2. The hot-melt mechanical extrusion type flexible pipe joint according to claim 1, wherein:
the heating wire (5) is spirally arranged in the pipe wall of the hot-melting inner joint (3), and jacks connected with two ends of the heating wire (5) are arranged on the pipe wall of the hot-melting inner joint (3).
3. The hot-melt mechanical extrusion type flexible pipe joint according to claim 1, wherein:
connect inner core (2) be equipped with annular boss (6) on the outer wall of the other end, be equipped with external screw thread (7) on the radial terminal surface of annular boss (6), connect outer sleeve (4) with be equipped with on the inner wall that connects the one end that inner core (2) are connected internal thread (8), connect inner core (2) with connect outer sleeve (4) to pass through internal thread (8) with the connection can be dismantled to the cooperation realization screw thread of external screw thread (7).
4. The hot-melt mechanical extrusion type flexible pipe joint according to claim 3, wherein:
the end surfaces of the hot-melting inner joint (3) and the flexible pipe (1) are abutted against the end surface, facing the flexible pipe (1), of the annular boss (6).
5. The hot-melt mechanical extrusion type flexible pipe joint according to claim 3, wherein:
the inner wall of the joint outer sleeve (4) is provided with a first annular groove (9) for accommodating the hot-melting inner joint (3).
6. The hot-melt mechanical extrusion type flexible pipe joint according to claim 5, wherein:
the end surface of the first annular groove (9) far away from the annular boss (6) is a first inclined surface (10); the end face, far away from the annular boss (6), of the hot-melt inner joint (3) is a second inclined face (11) matched with the first inclined face (10).
7. The hot-melt mechanical extrusion type flexible pipe joint according to claim 6, wherein:
the first inclined plane (10) is formed by gradually thinning the pipe wall thickness of the joint outer sleeve (4) from one end far away from the annular boss (6) to one end close to the annular boss (6);
the second inclined surface (11) is formed by gradually thinning the thickness of the pipe wall of the hot-melting inner joint (3) from one end close to the annular boss (6) to one end far away from the annular boss (6).
8. The hot-melt mechanical extrusion type flexible pipe joint according to claim 3, wherein:
and a second annular groove (12) is arranged on the outer wall of the joint inner core (2).
9. The hot-melt mechanical extrusion type flexible pipe joint according to claim 3, wherein:
a chamfer (13) is arranged between the end face of one end, far away from the annular boss (6), of the joint inner core (2) and the outer surface.
10. The hot-melt mechanical extrusion type flexible pipe joint according to claim 3, wherein:
a sealing gasket (14) is arranged between the hot-melting inner joint (3) and the annular boss (6);
the connector is characterized in that a sealing groove (15) is formed in the connector inner core (2), and a sealing ring (16) is arranged in the sealing groove (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011065590.8A CN112178326A (en) | 2020-09-30 | 2020-09-30 | Extrusion type flexible pipe joint of hot melting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011065590.8A CN112178326A (en) | 2020-09-30 | 2020-09-30 | Extrusion type flexible pipe joint of hot melting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112178326A true CN112178326A (en) | 2021-01-05 |
Family
ID=73949080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011065590.8A Pending CN112178326A (en) | 2020-09-30 | 2020-09-30 | Extrusion type flexible pipe joint of hot melting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112178326A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1078180A (en) * | 1996-08-30 | 1998-03-24 | Furoueru:Kk | Tube joint |
| US20060214418A1 (en) * | 2005-03-24 | 2006-09-28 | Veritas Ag | Arrangement with a tubular element |
| CN101886727A (en) * | 2010-05-13 | 2010-11-17 | 杨蒙 | Multiple seal hot melting fastening type pipe fitting |
| CN203880266U (en) * | 2014-05-31 | 2014-10-15 | 浙江达柏林阀门有限公司 | Connector |
| CN206072628U (en) * | 2016-08-31 | 2017-04-05 | 浙江楠丰管道工业有限公司 | Electromagnetism hot-melting pipe joint |
-
2020
- 2020-09-30 CN CN202011065590.8A patent/CN112178326A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1078180A (en) * | 1996-08-30 | 1998-03-24 | Furoueru:Kk | Tube joint |
| US20060214418A1 (en) * | 2005-03-24 | 2006-09-28 | Veritas Ag | Arrangement with a tubular element |
| CN101886727A (en) * | 2010-05-13 | 2010-11-17 | 杨蒙 | Multiple seal hot melting fastening type pipe fitting |
| CN203880266U (en) * | 2014-05-31 | 2014-10-15 | 浙江达柏林阀门有限公司 | Connector |
| CN206072628U (en) * | 2016-08-31 | 2017-04-05 | 浙江楠丰管道工业有限公司 | Electromagnetism hot-melting pipe joint |
Non-Patent Citations (2)
| Title |
|---|
| 刘奎武: "《施工现场水电气暖一本通》", 31 August 2010, 北京冶金工业出版社 * |
| 卢辞: "《农村节约型生态经济研究》", 31 December 2006, 合肥工业大学出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20040014359A1 (en) | Pothead connector with elastomeric sealing washer | |
| CN107317145A (en) | Contact pin and charging gun | |
| CN112178326A (en) | Extrusion type flexible pipe joint of hot melting machine | |
| EP4131657A1 (en) | Electric energy transmission aluminum part and machining process therefor | |
| CN112117586A (en) | Pressure-resistant waterproof connecting structure and method for cables | |
| CN111478101A (en) | Waterproof joint for lithium battery | |
| KR20140111862A (en) | Pipe connection structure for air conditioning system | |
| CN207082656U (en) | Connection terminal and electrical connection module with cooling function | |
| CN210272771U (en) | High-temperature-resistant radio frequency coaxial connector | |
| CN111396672A (en) | Large-diameter electric melting pipe connector | |
| CN112145826A (en) | Stainless steel or copper friction welding movable joint and manufacturing process | |
| CN201571211U (en) | Repaired joint of electric trace pipe | |
| CN220585280U (en) | High-capacity battery | |
| CN207584236U (en) | A kind of change current valve module FEP hose joint assemblies | |
| CN211232032U (en) | Sealing connection type corrugated pipe | |
| CN217215925U (en) | Cable connector | |
| CN217540006U (en) | Rotatable joint | |
| CN217656124U (en) | Dustproof and waterproof's portable cable subassembly | |
| CN213954651U (en) | Crimping formula connecting piece | |
| CN110289528A (en) | A kind of waterproof butt joint | |
| CN212564874U (en) | Stainless steel multi-way joint | |
| CN218543476U (en) | Copper pipe capable of preventing corrosion | |
| CN212028868U (en) | Large-diameter electric melting pipe connector | |
| CN215681666U (en) | High-sealing plug on cable junction box | |
| CN217108642U (en) | Novel connection structure of tubular product |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |