CN112325011A - Pipeline cold connection quick connection device and assembly method of pipeline cold connection quick connection device and pipeline - Google Patents
Pipeline cold connection quick connection device and assembly method of pipeline cold connection quick connection device and pipeline Download PDFInfo
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- CN112325011A CN112325011A CN202011176587.3A CN202011176587A CN112325011A CN 112325011 A CN112325011 A CN 112325011A CN 202011176587 A CN202011176587 A CN 202011176587A CN 112325011 A CN112325011 A CN 112325011A
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- 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
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/06—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends
- F16L19/061—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends a pressure ring being arranged between the clamping ring and the threaded member or the connecting member
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- 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
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/06—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends
- F16L19/063—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends by means of conical threaded surfaces
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- 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
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/06—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends
- F16L19/07—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends adapted for use in socket or sleeve connections
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention discloses a pipeline cold connection quick connecting device and an assembling method of the pipeline cold connection quick connecting device and a pipeline. The quick connecting device comprises a connector, wherein the two ends of the connector are respectively sleeved with a connecting ring, the inner walls of the two ends of the connector are sleeved with sealing rings, and after the connector, the connecting rings and the sealing rings are sleeved with each other, the central axes of the connector, the connecting rings and the sealing rings coincide. During the assembly process of the sealing ring and the pipeline, firstly, the sealing ring is placed on the inner wall of the connector, and the connecting ring is sleeved on the outer wall of the connector; then, applying external force to make the connecting ring move towards the middle part of the connecting body until the pressing is finished; after the pressing is finished, two deformation areas are formed at the corresponding positions where the outer wall of the connected pipeline is matched with the sealing rings, so that the connection strength and the connection stability are improved. The invention has relatively simple structure and convenient assembly, effectively improves the installation efficiency and saves the working hours; meanwhile, any filler is not needed in the whole connection process, and the problem of pipeline leakage caused by forgetting to use the filler is prevented.
Description
Technical Field
The invention relates to the technical field of fluid or gas pipeline connection, in particular to a pipeline cold connection quick connection device and an assembly method of the pipeline cold connection quick connection device and a pipeline.
Background
In traditional refrigeration and heating ventilation construction, pipeline connection is generally connected by using a welding method, and welding quality is unstable and is greatly influenced by human factors; the welding process can cause the oxidation of the connecting pipeline, and oxide skin is generated to influence the cleanness of the connecting pipeline; meanwhile, welding has high requirements on environment, and is dangerous and needs to be arranged in a fireproof manner.
At present, some fireless connecting methods for replacing welding exist in the market, but most of the fireless connecting methods need to use filling agents, parts are generally more, the use is relatively complicated, and the connecting operation is time-consuming; on the other hand, it is also inevitable that the filler is forgotten to be added, which may cause leakage of the pipe.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a quick connecting device for cold connection of pipelines, and provides the following technical scheme:
a pipeline cold connection quick connection device comprises a connector, wherein two ends of the connector are respectively sleeved with a connecting ring, inner walls of two ends of the connector are sleeved with sealing rings, the connector, the connecting rings and the sealing rings are all of hollow structures, and central axes of the connector, the connecting rings and the sealing rings are overlapped after the connector, the connecting rings and the sealing rings are sleeved with each other; the connecting body both ends with the junction of sealing ring is equipped with first inclined plane respectively, sealing ring one end outer wall be equipped with first inclined plane complex second inclined plane, the connecting body cover is established on the outer wall of sealing ring, first inclined plane with second inclined plane interference fit.
Further, a third inclined surface opposite to the second inclined surface is arranged on the outer wall of one end, opposite to the second inclined surface, of the sealing ring; the connecting ring comprises a positioning end and a limiting end, the positioning end is sleeved at the end of the connecting body and is fixedly connected with the connecting body, and a fourth inclined plane in interference fit with the third inclined plane is arranged on the inner wall of the limiting end.
Furthermore, the middle part of the inner wall of the connecting body is provided with a first limiting step.
Furthermore, a first annular groove is formed in the inner wall of the connecting body, the first annular grooves are formed in two sides of the first limiting step, at least one of the first limiting step and the second limiting step is arranged on each side of the first limiting step, and a sealing ring is arranged in each first annular groove.
Furthermore, a second annular groove is formed in the inner wall of the limiting end, and a sealing ring is arranged in the second annular groove.
Furthermore, the inner wall array of the positioning end is provided with 5 tooth-shaped annular clamping grooves, the tooth-shaped annular clamping grooves are connected with the outer wall of the connector in an interference fit manner, and the hardness of the connecting ring is greater than that of the connector.
Furthermore, a second limiting step is arranged in the middle of the outer wall of the connecting body, and the end face of the connecting ring is connected with the end face of the second limiting step.
Furthermore, the outer walls of the two ends of the connecting body are provided with external threads, the inner wall of the positioning end is provided with an internal thread matched with the external threads, and the positioning end is in threaded connection with the connecting body.
In another aspect, there is provided an assembling method of the cold connection quick connection device for a pipeline and a pipeline, including the steps of:
pre-connecting: respectively placing the sealing rings on the inner walls of the two ends of the connecting body to enable the first inclined plane to be in contact with the second inclined plane; respectively sleeving the connecting rings on the outer walls of two ends of the connecting body, wherein the central axes of the inner holes of the connecting body, the connecting rings and the sealing rings are superposed; inserting the connected pipes into the connecting body from two ends of the connecting body respectively;
locking: and applying pressure to the connecting ring to enable the connecting ring to move towards the middle of the connector, pushing the sealing ring by the connecting ring, extruding the second inclined plane into the first inclined plane, and extruding the third inclined plane into the fourth inclined plane, so that the sealing ring is in interference fit with the connector, and the sealing ring is in interference fit with the connecting ring.
Further, in the locking step, in the extrusion process of the sealing ring, extrusion force is transmitted to the outer surface of the pipeline, a first deformation area is formed at the corresponding position of the outer wall of the connected pipeline and the second inclined plane under the action of the extrusion force, and a second deformation area is formed at the corresponding position of the outer wall of the connected pipeline and the third inclined plane.
Compared with the existing cold connecting device, the cold connecting device has a relatively simple structure, can effectively improve the installation efficiency and save the working hours; meanwhile, any filler is not needed in the whole connection process, and the problem of pipeline leakage caused by forgetting to use the filler is prevented. On the other hand, the sealing ring is arranged, so that the connection tightness is improved, the electrochemical corrosion phenomenon between the connected pipeline and the device is prevented, and the service life of the connected pipeline can be prolonged.
Drawings
FIG. 1 is a structural diagram of a locking state of a first embodiment of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic structural diagram of a pre-connection state according to a first embodiment of the present invention;
FIG. 4 is a schematic view of a first embodiment of a connector structure of the present invention;
FIG. 5 is a schematic view of an attachment ring structure according to a first embodiment of the present invention;
FIG. 6 is a schematic view of a seal ring structure according to the present invention;
FIG. 7 is a structural diagram of a locking state of the second embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a pre-connection state according to a second embodiment of the present invention;
FIG. 9 is a schematic view of a second embodiment of a connector structure of the present invention;
figure 10 is a schematic view of an attachment ring structure according to a second embodiment of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention, the following describes a preferred embodiment of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
as shown in fig. 1-6, a quick connection device for cold connection of pipelines comprises a connector 1, wherein two ends of the connector 1 are respectively sleeved with a connection ring 2, inner walls of two ends of the connector 1 are sleeved with a sealing ring 3, and the connector 1, the connection ring 2 and the sealing ring 3 are all of a hollow structure. The connecting part of the two ends of the connecting body 1 and the sealing ring 3 is respectively provided with a first inclined surface 11, the outer wall of one end of the sealing ring 3 is provided with a second inclined surface 31 matched with the first inclined surface 11, the connecting body 1 is sleeved on the outer wall of the sealing ring 3, the first inclined surface 11 is in interference fit with the second inclined surface 31, and the outer wall of the other end of the sealing ring 3 is provided with a third inclined surface 32 in the direction opposite to that of the second inclined surface 31; the connecting ring 2 comprises a positioning end 21 and a limiting end 22, the positioning end 21 is sleeved on the end portion of the connecting body 1 and is fixedly connected with the connecting body 1, and a fourth inclined surface 23 in interference fit with the third inclined surface 32 is arranged on the inner wall of the limiting end 22. The horizontal included angle of the first inclined surface 11 is greater than that of the second inclined surface 31, and the horizontal included angle of the fourth inclined surface 23 is greater than that of the third inclined surface 32; in the present embodiment, the horizontal included angle between the first inclined surface 11 and the fourth inclined surface 23 is 34 °, and the horizontal included angle between the second inclined surface 31 and the third inclined surface 32 is 21 °.
The middle part of the inner wall of the connecting body 1 is provided with a first limiting structure 12 for limiting the length of the connected pipeline 8 inserted into the connecting body 1; in this embodiment, the first limiting structure 12 is an annular step arranged on the inner wall of the connecting body 1; obviously, the first limiting structure 12 can also be other structures, such as bumps or bumps arranged along the arc surface array of the inner wall of the connector 1. The inner wall of the connector 1 is provided with 4 first annular grooves 13, the first annular grooves 13 are evenly distributed on two sides of the first limiting structure 12 in an array mode, and the first annular grooves 13 are respectively provided with a rubber sealing ring 4. The inner wall of the limiting end 22 of the connecting ring 2 is provided with a second annular groove 24, and a rubber sealing ring 4 is arranged in the second annular groove 24. Two rubber seal 4 in the connector 1 play a double-layer sealing role, and higher sealing reliability is provided. The rubber sealing ring 4 in the connecting ring 2 plays a role in auxiliary sealing, and plays a role in sealing the connecting ring 2 and the connected pipeline 8 at last on the premise that the two previous seals are both invalid and the sealing ring 3 is invalid; meanwhile, the existence of the sealing ring seals the connected pipeline 8 and the connecting ring 2, so that water vapor and the like in the external environment cannot influence the inside of the connecting device; on the other hand, the existence of the sealing ring isolates the direct contact between the connected pipeline 8 and the connecting ring 2, and prevents the electrochemical corrosion generated by the connected pipeline 8 and the connecting ring 2 from influencing the service life of the connected pipeline 8.
The inner wall array of the positioning end 21 of the connecting ring 2 is provided with 5 tooth-shaped annular clamping grooves 25, and when the connecting ring 2 is pushed and pressed, the tooth-shaped annular clamping grooves 25 are occluded on the outer wall surface of the connecting body 1 and are connected with the outer wall of the connecting body 1 in an interference fit manner. The arrangement of the toothed ring groove 25 provides a stronger connection effect for the connection device. The middle part of the outer wall of the connector 1 is provided with a second limiting structure 14, when the pressing of the connecting device is completed, the end surfaces of the two connecting rings 2 are respectively connected with the end surfaces of two sides of the second limiting structure 14, and the second limiting structure 14 is used for limiting the length of the connecting rings 2 clamped into the connector 1. In this embodiment, the second position-limiting structure 14 is two annular steps arranged in an array; obviously, the second limiting structure 14 can also be other structures, such as a ring-shaped step or an array of positioning bumps arranged on the outer wall of the connector 1.
The assembling method of the pipeline cold connection quick connecting device and the pipeline comprises a pre-connecting step and a locking step. Wherein, the pre-connection step: respectively placing the sealing rings 4 in the first annular groove 13 and the second annular groove 24, respectively placing the sealing rings 3 on the inner walls of two ends of the connecting body 1, and enabling the first inclined surface 11 to be in contact with the second inclined surface 31; the connecting rings 2 are respectively sleeved on the outer walls of two ends of the connector 1, the depth of the connecting rings 2 pressed into the connector 1 is 3 mm, the connecting rings 2 are ensured not to fall off from the surface of the connector 1, and the central axes of inner holes of the connector 1, the connecting rings 2 and the sealing ring 3 are overlapped; respectively inserting the connected pipeline 8 into the connecting body 1 from two ends of the connecting body 1 until the end surface of the connected pipeline 8 is connected with the first limiting structure 12; locking: and applying pressure to the connecting ring 2 to enable the connecting ring 2 to move towards the middle of the connector 1, wherein the connecting ring 2 pushes the sealing ring 3, the second inclined surface 31 is extruded into the first inclined surface 11, the third inclined surface 32 is extruded into the fourth inclined surface 23, so that the sealing ring 3 is in interference fit with the connector 1, and the sealing ring 3 is in interference fit with the connecting ring 2 until the end part of the connecting ring 2 is connected with the end surface of the second limiting structure 14. In the locking step, the sealing ring 3 transmits the extrusion force to the outer surface of the connected pipeline 8 in the extrusion process, and under the action of the extrusion force, a first deformation area 5 is formed at the position of the outer wall of the connected pipeline 8 corresponding to the second inclined surface 31, a second deformation area 6 is formed at the position of the outer wall of the connected pipeline 8 corresponding to the third inclined surface 32, and a third deformation area 7 is formed at the connection position of the outer wall of the connecting body 1 and the connecting ring 2. In this embodiment, the hardness of the material of the sealing ring 3 is greater than that of the connecting ring 2, the hardness of the material of the connecting ring 2 is greater than that of the material of the connecting body 1, and the hardness of the material of the connecting body 1 is greater than that of the connected pipeline 8.
Example 2:
as shown in fig. 6-10, a quick connection device for cold connection of pipelines comprises a connector 1, wherein two ends of the connector 1 are respectively sleeved with a connection ring 2, inner walls of two ends of the connector 1 are sleeved with a sealing ring 3, and the connector 1, the connection ring 2 and the sealing ring 3 are all of a hollow structure. The connecting part of the two ends of the connecting body 1 and the sealing ring 3 is respectively provided with a first inclined surface 11, the outer wall of one end of the sealing ring 3 is provided with a second inclined surface 31 matched with the first inclined surface 11, the connecting body 1 is sleeved on the outer wall of the sealing ring 3, the first inclined surface 11 is in interference fit with the second inclined surface 31, and the outer wall of the other end of the sealing ring 3 is provided with a third inclined surface 32 in the direction opposite to that of the second inclined surface 31; the connecting ring 2 comprises a positioning end 21 and a limiting end 22, the positioning end 21 is sleeved on the end portion of the connecting body 1 and is fixedly connected with the connecting body 1, and a fourth inclined surface 23 in interference fit with the third inclined surface 32 is arranged on the inner wall of the limiting end 22. The horizontal included angle of the first inclined surface 11 is greater than that of the second inclined surface 31, and the horizontal included angle of the fourth inclined surface 23 is greater than that of the third inclined surface 32; in the present embodiment, the horizontal included angle between the first inclined surface 11 and the fourth inclined surface 23 is 34 °, and the horizontal included angle between the second inclined surface 31 and the third inclined surface 32 is 21 °.
The middle part of the inner wall of the connecting body 1 is provided with a first limiting structure 12 for limiting the length of the connected pipeline 8 inserted into the connecting body 1; in this embodiment, the first position-limiting structure 12 is an annular step arranged on the inner wall of the connector 1; obviously, the first limiting structure 12 can also be other structures, such as bumps or bumps arranged along the arc surface array of the inner wall of the connector 1. The inner wall of the connector 1 is provided with 4 first annular grooves 13, the first annular grooves 13 are evenly distributed on two sides of the first limiting structure 12 in an array mode, and the first annular grooves 13 are respectively provided with a rubber sealing ring 4. The inner wall of the limiting end 22 of the connecting ring 2 is provided with a second annular groove 24, and a rubber sealing ring is arranged in the second annular groove 24. Two rubber seal 4 in the connector 1 play a double-layer sealing role, and higher sealing reliability is provided. The rubber sealing ring 4 in the connecting ring 2 plays a role in auxiliary sealing, and plays a role in sealing the connecting ring 2 and the connected pipeline 8 on the premise that the two previous seals fail and the sealing ring 3 also fails, and meanwhile, the existence of the sealing ring seals the connected pipeline 8 and the connecting ring 2, so that water vapor and the like in the external environment cannot influence the inside of the connecting device; on the other hand, the existence of the sealing ring isolates the direct contact between the connected pipeline 8 and the connecting ring 2, and prevents the electrochemical corrosion generated by the connected pipeline 8 and the connecting ring 2 from influencing the service life of the connected pipeline 8.
The outer walls of the two ends of the connector 1 are provided with external threads 15, the inner wall of the positioning end 21 of the connecting ring 2 is provided with internal threads 26 matched with the external threads 15, and the connecting ring 2 is in threaded connection with the connector 1. In order to facilitate the connection device to be screwed by a spanner, the outer wall of the connecting ring 2 and the outer wall of the connector 1 are made into regular hexagon shapes.
The assembling method of the pipeline cold connection quick connecting device and the pipeline comprises a pre-connecting step and a locking step. Wherein, the pre-connection step: respectively placing the sealing rings 4 in the first annular groove 13 and the second annular groove 24, respectively placing the sealing rings 3 on the inner walls of two ends of the connecting body 1, and enabling the first inclined surface 11 to be in contact with the second inclined surface 31; the connecting rings 2 are respectively sleeved on the outer walls of the two ends of the connecting body 1, so that the internal threads 26 of the connecting rings 2 are clamped into the external threads 15 of the connecting body 1 and cannot be screwed, and only the connecting rings 2 are required to be ensured not to fall off from the surface of the connecting body 1; the central axes of inner holes of the connector 1, the connecting ring 2 and the sealing ring 3 are overlapped; respectively inserting the connected pipeline 8 into the connecting body 1 from two ends of the connecting body 1 until the end surface of the connected pipeline 8 is connected with the first limiting structure 12; locking: the connecting ring 2 is screwed to move towards the middle of the connector 1, the connecting ring 2 pushes the sealing ring 3 to extrude the second inclined surface 31 into the first inclined surface 11 and extrude the third inclined surface 32 into the fourth inclined surface 23, so that the sealing ring 3 is in interference fit with the connector 1, and the sealing ring 3 is in interference fit with the connecting ring 2. In the locking step, the sealing ring 3 transmits the extrusion force to the outer surface of the connected pipeline 8 in the extrusion process, and under the action of the extrusion force, a first deformation area 5 is formed at the position of the outer wall of the connected pipeline 8 corresponding to the second inclined surface 31, and a second deformation 6 is formed at the position of the outer wall of the connected pipeline 5 corresponding to the third inclined surface 32. In this embodiment, the hardness of the material of the sealing ring 3 is greater than that of the connecting ring 2, the hardness of the material of the connecting ring 2 is greater than that of the material of the connecting body 1, and the hardness of the material of the connecting body 1 is greater than that of the connected pipeline 8.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Claims (10)
1. A pipeline cold connection quick connecting device is characterized by comprising a connecting body, wherein connecting rings are respectively sleeved at two ends of the connecting body, sealing rings are sleeved on the inner walls of the two ends of the connecting body, the connecting rings and the sealing rings are of hollow structures, and after the connecting body, the connecting rings and the sealing rings are sleeved with each other, the central axes of the connecting body, the connecting rings and the sealing rings are superposed;
the connecting body both ends with the junction of sealing ring is equipped with first inclined plane respectively, sealing ring one end outer wall be equipped with first inclined plane complex second inclined plane, the connecting body cover is established on the outer wall of sealing ring, first inclined plane with second inclined plane interference fit.
2. The quick pipe cold connection coupling device of claim 1, wherein an outer wall of an end of the sealing ring opposite to the second inclined surface is provided with a third inclined surface opposite to the second inclined surface;
the connecting ring comprises a positioning end and a limiting end, the positioning end is sleeved at the end of the connecting body and is fixedly connected with the connecting body, and a fourth inclined plane in interference fit with the third inclined plane is arranged on the inner wall of the limiting end.
3. The quick coupling device for cold connecting of pipes according to claim 2, wherein the middle of the inner wall of the coupling body is provided with a first limit structure.
4. The quick cold coupling device according to claim 3, wherein the inner wall of the coupling body is provided with a first annular groove, the first annular grooves are disposed on two sides of the first limiting structure, at least one of the first annular grooves is disposed on each side, and a sealing ring is disposed in each first annular groove.
5. The quick coupling device for cold connecting of pipes according to claim 4, wherein the inner wall of the limiting end is provided with a second annular groove, and a sealing ring is arranged in the second annular groove.
6. The quick connecting device for cold connection of pipelines according to claim 5, wherein the inner wall array of the positioning end is provided with 5 tooth-shaped annular clamping grooves, the tooth-shaped annular clamping grooves are connected with the outer wall of the connecting body in an interference fit manner, and the hardness of the connecting ring is greater than that of the connecting body.
7. The quick cold connection coupling device for pipelines according to claim 6, wherein a second limiting structure is provided at the middle of the outer wall of the connecting body, and the end surface of the connecting ring is connected with the end surface of the second limiting structure.
8. The quick cold coupling device for pipes according to claim 5, wherein the outer wall of the connecting body at both ends is provided with an external thread, the inner wall of the positioning end is provided with an internal thread matching with the external thread, and the positioning end is in threaded connection with the connecting body.
9. A method of assembling a quick coupling device for cold connecting pipes according to any one of claims 1 to 8, comprising the steps of:
pre-connecting: respectively placing the sealing rings on the inner walls of the two ends of the connecting body to enable the first inclined plane to be in contact with the second inclined plane; respectively sleeving the connecting rings on the outer walls of two ends of the connecting body, wherein the central axes of the inner holes of the connecting body, the connecting rings and the sealing rings are superposed; inserting the connected pipelines into the connecting body from two ends of the connecting body respectively;
locking: and applying pressure to the connecting ring to enable the connecting ring to move towards the middle of the connector, pushing the sealing ring by the connecting ring, extruding the second inclined plane into the first inclined plane, and extruding the third inclined plane into the fourth inclined plane, so that the sealing ring is in interference fit with the connector, and the sealing ring is in interference fit with the connecting ring.
10. The fitting method according to claim 9, wherein in the locking step, the seal ring transmits a pressing force to the outer surface of the pipe during the pressing, and a first deformation region is formed at a position corresponding to the second slope on the outer wall of the connected pipe and a second deformation region is formed at a position corresponding to the third slope on the outer wall of the connected pipe under the pressing force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011176587.3A CN112325011A (en) | 2020-10-28 | 2020-10-28 | Pipeline cold connection quick connection device and assembly method of pipeline cold connection quick connection device and pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011176587.3A CN112325011A (en) | 2020-10-28 | 2020-10-28 | Pipeline cold connection quick connection device and assembly method of pipeline cold connection quick connection device and pipeline |
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| Publication Number | Publication Date |
|---|---|
| CN112325011A true CN112325011A (en) | 2021-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011176587.3A Pending CN112325011A (en) | 2020-10-28 | 2020-10-28 | Pipeline cold connection quick connection device and assembly method of pipeline cold connection quick connection device and pipeline |
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| CN (1) | CN112325011A (en) |
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| CN205938252U (en) * | 2016-08-18 | 2017-02-08 | 唐学功 | Cydariform pipeline quick -operation joint |
| CN111550637A (en) * | 2020-05-15 | 2020-08-18 | 深圳市锐克科技有限公司 | Pipeline terminal plugging structure and assembly method of structure and pipeline |
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