CN111207252A - Connecting structure of metal pipe composite pipe outside inner resin pipe and manufacturing method thereof - Google Patents
Connecting structure of metal pipe composite pipe outside inner resin pipe and manufacturing method thereof Download PDFInfo
- Publication number
- CN111207252A CN111207252A CN202010100312.5A CN202010100312A CN111207252A CN 111207252 A CN111207252 A CN 111207252A CN 202010100312 A CN202010100312 A CN 202010100312A CN 111207252 A CN111207252 A CN 111207252A
- Authority
- CN
- China
- Prior art keywords
- pipe
- shape memory
- memory alloy
- metal
- outer connecting
- 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
- F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
- F16L13/02—Welded joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/52—Joining tubular articles, bars or profiled elements
- B29C66/522—Joining tubular articles
- B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
-
- 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
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
- F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
A composite pipe connecting structure for the external metal pipe of internal resin pipe features that the internal diameter of external connecting pipe made of shape memory alloy is 2-8% greater than the external diameter of external metal pipe of internal resin pipe, under the transformation temperature of the shape memory alloy outer connecting pipe, expanding the hole of the shape memory alloy outer connecting pipe, placing the expanded shape memory alloy outer connecting pipe outside a metal pipe of a lining resin layer, melting and bonding the resin pipe in the adjacent metal pipe of a heating device, coating glue at the gap position and the outside of the adjacent metal pipe, wrapping the expanded shape memory alloy outer connecting pipe at the gap position and the outside of the adjacent metal pipe, heating the shape memory alloy outer connecting pipe to be above the transformation temperature of the shape memory alloy outer connecting pipe, preserving heat, and shrinking the expanded shape memory alloy outer connecting pipe, and combining the expanded shape memory alloy outer connecting pipe with the adjacent metal pipe of the lining resin layer and the glue.
Description
Technical Field
The invention relates to a connecting structure of a metal pipe composite pipe outside an inner resin pipe and a manufacturing method thereof.
Background
The connection problem of the existing resin-lined metal pipes is a problem which is not solved, because the melting point of the outer metal pipes is high, and the molten high-temperature metal firstly melts the resin during welding, so that the metal pipes of the adjacent resin-lined pipes cannot be connected together by a welding method, and the gap between the adjacent outer metal pipes and the gap between the inner resin pipes are easy to leak by a mechanical connection method, so that the requirements of conveying corrosive gas and liquid cannot be met.
The hydrogen is conveyed by the metal pipeline, the hydrogen easily enters the hydrogen pipeline to generate hydrogen cracks, the service life of the pipeline is reduced, the problem of hydrogen corrosion is solved by conveying the hydrogen by the metal pipeline with the lining resin pipe, but the continuous inner resin pipeline is not formed at the joint of the metal pipelines with the adjacent lining resin pipes, the hydrogen corrosion is formed at the joint, and particularly, when the hydrogen is conveyed at high pressure, the inner resin pipe is easily cracked at the joint of the outer metal pipe, so that the use of the metal pipe with the lining resin pipe is limited.
Disclosure of Invention
The purpose of the invention is: 1. the inner resin pipe is made to be convex by removing the end part of the outer metal pipe of the adjacent lining resin pipe, and the adjacent inner resin pipe is melted and welded together by the electric heating device to form the continuous inner resin pipe. 2. The inner diameter of the shape memory alloy outer connecting pipe above the transition temperature is manufactured to be 2% -8% larger than the outer diameter of the inner resin pipe outer metal pipe composite pipe, the shape memory alloy outer connecting pipe is reamed below the transition temperature of the shape memory alloy outer connecting pipe, the reamed shape memory alloy outer connecting pipe is arranged outside the inner resin pipe outer metal pipe composite pipe, the gap position and the outside of the adjacent metal pipe are coated with glue, the reamed shape memory alloy outer connecting pipe is wrapped at the gap position and the outside of the adjacent metal pipe and coated with glue, the shape memory alloy outer connecting pipe is heated to be above the transition temperature and is insulated, and the reamed shape memory alloy outer connecting pipe shrinks to be tightly combined with the adjacent inner resin pipe outer metal pipe composite pipe and glue: (1) and the shape memory alloy outer connecting pipe is heated at low temperature, so that the resin layer in the metal pipe is not influenced. (2) The shape memory alloy outer connecting pipe has the shape memory effect under the condition that the shape memory alloy outer connecting pipe is higher than the transition temperature, and has the characteristic of deformation processing under the condition that the shape memory alloy outer connecting pipe is lower than the transition temperature, so that the outer connecting pipe after deformation processing can be easily arranged outside the metal pipe, and the shape memory alloy outer connecting pipe is connected with the adjacent outer metal pipes together under the condition that the shape memory alloy outer connecting pipe is higher than the transition temperature and is higher than the transition temperature under the high-pressure condition. (3) The outer connecting pipe of the shape memory alloy is integrated with the outer metal pipe composite pipe of the adjacent inner resin pipe by gluing the outer metal pipe gap and the outer part of the outer metal pipe, so that the strength of the gap of the inner lining resin metal pipe is increased, and the sealing performance of the gap of the metal pipe is improved. (4) And the connection strength of the adjacent metal tubes is improved by mechanical clamping of the bulges at the two ends of the shape memory alloy outer connecting tube into the grooves of the adjacent metal tubes. 3. The heat-insulating material wraps the metal pipe with the lining resin layer and the shape memory alloy outer connecting pipe, so that the heat-insulating property of the metal pipe with the lining resin layer is improved.
The invention provides a connecting structure of a metal pipe composite pipe outside an inner resin pipe, which comprises the following components: the inner diameter of the shape memory alloy outer connecting pipe is made to be 2 to 8 percent larger than the outer diameter of the inner resin pipe outer metal pipe composite pipe by heating the shape memory alloy outer connecting pipe above the transformation temperature, under the transformation temperature of the shape memory alloy outer connecting pipe, expanding the hole of the shape memory alloy outer connecting pipe, placing the expanded shape memory alloy outer connecting pipe outside the inner resin pipe and the outer metal pipe composite pipe, heating the adjacent metal composite pipe inner resin pipe by a heating device, melting and bonding the adjacent metal composite pipe inner resin pipe together, coating glue at the gap and outside of the adjacent metal composite pipe, wrapping the expanded shape memory alloy outer connecting pipe at the gap and outside of the adjacent metal composite pipe, keeping the temperature of the shape memory alloy outer connecting pipe above the transformation temperature by heating, and combining the expanded shape memory alloy outer connecting pipe with the adjacent inner resin pipe outer metal pipe composite pipe and the glue.
The invention provides a connecting structure of a metal pipe composite pipe outside an inner resin pipe, which comprises the following components: the composite pipe is characterized in that the outer metal pipe of the inner resin pipe is externally provided with a metal pipe composite pipe, the outer connecting pipe of the shape memory alloy is heated to a temperature higher than the transformation temperature of the outer metal pipe composite pipe of the inner resin pipe, the inner diameter of the outer connecting pipe of the shape memory alloy is made to be 2% -8% larger than the outer diameter of the outer metal pipe composite pipe of the inner resin pipe, two ends of the outer connecting pipe of the shape memory alloy are made to be convex, grooves are processed at positions corresponding to the convex parts outside the adjacent outer metal pipe composite pipe of the inner resin pipe, the outer connecting pipe of the shape memory alloy is reamed and the convex parts are flattened below the transformation temperature, the reamed and the convex parts are placed outside the inner resin pipe composite pipe, a heating device heats the adjacent inner metal pipe composite pipe, the adjacent metal pipe inner resin pipe is melted and bonded together, glue is coated at the gap between the adjacent metal, the shape memory alloy outer connecting pipe is heated to a temperature higher than the transition temperature, heat is preserved, the expanded shape memory alloy outer connecting pipe shrinks to be combined with the adjacent inner resin pipe outer metal pipe composite pipe and glue, and the bulges at the two ends of the shape memory alloy outer connecting pipe are clamped into the grooves at the positions outside the inner resin pipe outer metal pipe composite pipe corresponding to the bulges.
The invention provides a connecting structure of a metal pipe composite pipe outside an inner resin pipe, which comprises the following components: the inner resin pipe is externally coated with glue, the inner resin bent pipe or three-way pipe or four-way pipe or multi-way pipe is externally coated with shape memory alloy, the shape memory alloy external connecting pipe is heated to a temperature higher than the transition temperature of the shape memory alloy external connecting pipe, the inner diameter of the shape memory alloy external connecting pipe is made to be 2% -8% larger than the outer diameter of the metal pipe and the outer diameter of the bent pipe or multi-way pipe, and is heated to a temperature lower than the transition temperature of the shape memory alloy external connecting pipe, the shape memory alloy external connecting pipe is reamed, the reamed shape memory alloy external connecting pipe is arranged outside the metal composite pipe, the resin pipe and the bent pipe or multi-way pipe are heated by a heating plate, the metal composite pipe is extruded towards the connecting gap of the bent pipe or the multi-way pipe, the molten resin pipe in the bent pipe or the multi-way pipe and the molten resin pipe in the metal composite pipe are bonded together, the gap, the shape memory alloy outer connecting pipe is heated to a temperature higher than the transition temperature, heat is preserved, and the reamed shape memory alloy outer connecting pipe shrinks to be combined with the inner resin bent pipe or the inner resin multi-way pipe and the inner resin outer metal pipe and glue.
The invention provides a connecting structure of a metal pipe composite pipe outside an inner resin pipe, which comprises the following components: an outer metal pipe composite pipe of an inner resin pipe, an inner lining resin bent pipe or a three-way pipe or a four-way pipe or a multi-way pipe shape memory alloy outer connecting pipe, heating the shape memory alloy outer connecting pipe to be above the transformation temperature, manufacturing the inner diameter of the shape memory alloy outer connecting pipe to be 2% -8% larger than the outer diameter of the outer metal pipe composite pipe of the inner resin pipe and the outer diameter of the inner resin bent pipe or the inner resin multi-way pipe, manufacturing bulges at two ends of the shape memory alloy outer connecting pipe, manufacturing grooves at the outer ends of the metal composite pipe, reaming the shape memory alloy outer connecting pipe, flattening the bulges at two ends of the outer connecting pipe, processing the grooves at the outer ends of the inner resin bent pipe or the inner resin multi-way pipe, filling the reamed shape memory alloy outer connecting pipe into the outer metal pipe composite pipe of the inner resin pipe, heating the resin, the inner resin metal pipe is extruded to the joint gap of the inner resin bent pipe or the inner resin multi-way pipe, the molten resin pipe in the bent pipe or the multi-way pipe is bonded with the molten resin pipe in the metal pipe, the joint gap of the bent pipe or the multi-way pipe and the metal pipe and the outside are coated with glue, a shape memory alloy outer connecting pipe which is expanded and flattened is wrapped at the joint gap of the bent pipe or the multi-way pipe and the metal composite pipe and the outside of the glue, the shape memory alloy outer connecting pipe is heated to be above the transition temperature and is insulated, the expanded shape memory alloy outer connecting pipe shrinks and is bonded with the inner resin bent pipe or the inner resin multi-way pipe and the inner resin metal composite pipe together, and the bulges at the two ends of the shape memory alloy outer connecting pipe are clamped into the outer grooves at the end part of the metal composite pipe and the outer grooves at.
The manufacturing method of the connection structure of the metal pipe composite pipe outside the inner resin pipe comprises the following steps: 1. heating the shape memory alloy outer connecting pipe to a temperature higher than the transformation temperature, and making the inner diameter of the shape memory alloy outer connecting pipe 2% -8% larger than the outer diameter of the inner resin pipe outer metal pipe composite pipe; 2. expanding the outer connecting pipe of the shape memory alloy below the transformation temperature of the outer connecting pipe of the shape memory alloy; 3. the outer connecting pipe of the expanded shape memory alloy is arranged outside the inner resin metal pipe; 4. heating resin pipes in adjacent metal pipes by the heating plate, extruding the adjacent metal pipes to the connecting gap, and bonding the adjacent molten inner resin pipes together; 5. gluing the gaps between adjacent metal pipes and the outside; 6. the expanded shape memory alloy outer connecting pipe is wrapped at the gap between the adjacent metal pipes and outside the glue coating; 7. the shape memory alloy outer connecting pipe is heated to a temperature higher than the transformation temperature and is insulated; 8. the enlarged shape memory alloy outer connecting tube contracts to bond the adjacent inner connecting resin tube and resin layer and outer metal tube and glue together.
The manufacturing method of the connection structure of the metal pipe composite pipe outside the inner resin pipe comprises the following steps: 1. heating the shape memory alloy outer connecting pipe to a temperature higher than the transformation temperature, making the inner diameter of the shape memory alloy outer connecting pipe 2% -8% larger than the outer diameter of the inner resin pipe outer metal pipe composite pipe, and making bulges at two ends of the shape memory alloy outer connecting pipe; 2. under the transformation temperature of the shape memory alloy outer connecting pipe, expanding the hole of the shape memory alloy outer connecting pipe and flattening the bulge; 3. processing a groove at the position outside the adjacent inner resin pipe, outside the metal pipe composite pipe and corresponding to the protrusion; 4. the shape memory alloy outer connecting pipe which is expanded and flattened and is convex is arranged outside the inner resin pipe outer metal pipe composite pipe; 5. heating resin pipes in adjacent metal pipes by the heating plate, extruding the adjacent metal pipes to the connecting gap, and bonding the adjacent molten inner resin pipes together; 6. gluing the gaps between adjacent metal pipes and the outside; 7. the shape memory alloy outer connecting pipe which is expanded and flattened and is convex is wrapped at the gap of the adjacent metal pipes and outside the glue coating; 8. the shape memory alloy outer connecting pipe is heated to a temperature higher than the transformation temperature and is insulated; 9. the expanded shape memory alloy outer connecting pipe shrinks and is combined with the adjacent inner connecting resin pipe outer metal pipe and glue, the bulges at the two ends of the shape memory alloy outer connecting pipe are clamped in the grooves at the positions corresponding to the bulges outside the inner resin pipe outer metal pipe composite pipe, and the adjacent inner resin pipe outer metal pipe composite pipe is connected together.
The manufacturing method of the connection structure of the metal pipe composite pipe outside the inner resin pipe comprises the following steps: 1. heating the shape memory alloy outer connecting pipe to a temperature higher than the transformation temperature, and making the inner diameter of the shape memory alloy outer connecting pipe 2% -8% larger than the outer diameter of the inner resin pipe outer metal pipe composite pipe and the outer diameter of the inner resin bent pipe or the inner resin multi-way pipe; 2. expanding the outer connecting pipe of the shape memory alloy below the transformation temperature of the outer connecting pipe of the shape memory alloy; 3. the expanded shape memory alloy outer connecting pipe is arranged outside the inner resin pipe outer metal pipe composite pipe and outside the inner resin bent pipe or the inner resin multi-way pipe; 4. the heating plate heats the resin pipe in the metal pipe and the resin pipe in the bent pipe or the multi-way pipe, the metal pipe extrudes to the connecting gap of the bent pipe or the multi-way pipe, and the molten resin pipe in the bent pipe or the multi-way pipe is bonded with the molten resin pipe in the metal pipe; 5. glue is coated at the gap between the bent pipe or the multi-way pipe and the metal pipe and the outside; 6. the outer connecting pipe of the expanded shape memory alloy is wrapped at the gap between the bent pipe or the multi-way pipe and the metal pipe and outside the glue coating; 7. the shape memory alloy outer connecting pipe is heated to a temperature higher than the transformation temperature and is insulated; 8. the outer connecting pipe of the shape memory alloy is contracted and combined with the inner resin bent pipe or the inner resin multi-way pipe and the inner resin outer metal pipe and glue.
The manufacturing method of the connection structure of the metal pipe composite pipe outside the inner resin pipe comprises the following steps: 1. heating the shape memory alloy outer connecting pipe to a temperature higher than the transformation temperature, making the inner diameter of the shape memory alloy outer connecting pipe 2% -8% larger than the outer diameter of the inner resin pipe outer metal pipe composite pipe and the outer diameter of the inner resin bent pipe or the inner resin multi-way pipe, and making bulges at two ends of the shape memory alloy outer connecting pipe; 2. under the transformation temperature of the shape memory alloy outer connecting pipe, expanding the hole of the shape memory alloy outer connecting pipe and flattening the bulges at the two ends of the outer connecting pipe; 3. processing a groove outside the end part of the metal pipe; 4. the outer end of the inner resin bent pipe or the inner resin multi-way pipe is provided with a groove, and 5, a shape memory alloy outer connecting pipe which is expanded is arranged outside the inner resin pipe outer metal pipe composite pipe; 6. the heating plate heats the resin pipe in the metal pipe and the resin pipe in the bent pipe or the multi-way pipe, the metal pipe extrudes to the connecting gap of the bent pipe or the multi-way pipe, and the molten resin pipe in the bent pipe or the multi-way pipe is bonded with the molten resin pipe in the metal pipe; 7. glue is coated at the gap between the bent pipe or the multi-way pipe and the metal pipe and the outside; 8. the shape memory alloy outer connecting pipe which is expanded and flattened and is convex is wrapped at the gap between the bent pipe or the multi-way pipe and the metal pipe and outside the glue coating; 9. the shape memory alloy outer connecting pipe is heated to a temperature higher than the transformation temperature and is insulated; 10. the expanded shape memory alloy outer connecting pipe shrinks and is combined with the inner resin bent pipe or the inner resin multi-way pipe and the inner resin outer metal pipe and glue, the bulges at the two ends of the shape memory alloy outer connecting pipe are clamped into the outer groove at the end part of the inner resin outer metal pipe composite pipe and the outer groove at the end part of the inner resin bent pipe or the inner resin multi-way pipe, and the inner resin bent pipe or the inner resin multi-way pipe is connected with the inner resin metal pipe.
The manufacturing method of the connection structure of the metal pipe composite pipe outside the inner resin pipe comprises the following steps: 1. gluing outside the resin pipe; 2. the gummed resin pipe is arranged in the metal pipe; 3. high-temperature high-pressure gas enters the resin pipes with the two closed ends, the resin pipes expand, the expanded resin pipes are bonded with the inner walls of the outer metal pipes by glue, and the outer metal pipe composite pipes of the inner resin pipes are manufactured; 4. heating the shape memory alloy outer connecting pipe to a temperature higher than the transformation temperature, making the inner diameter of the shape memory alloy outer connecting pipe 2% -8% larger than the outer diameter of the inner resin pipe outer metal pipe composite pipe, and making bulges at two ends of the shape memory alloy outer connecting pipe; 5. under the transformation temperature of the shape memory alloy outer connecting pipe, expanding the hole of the shape memory alloy outer connecting pipe and flattening the bulge; 6. processing a groove at the position outside the adjacent inner resin pipe, outside the metal pipe composite pipe and corresponding to the protrusion; 7. the shape memory alloy outer connecting pipe which is expanded and flattened and is convex is arranged outside the inner resin pipe outer metal pipe composite pipe; 8. heating the resin pipes in the adjacent metal pipes by the heating plate, extruding the adjacent metal pipes to the connecting gap, and bonding the melted inner resin pipes together; 9. gluing the gaps between adjacent metal pipes and the outside; 10. the shape memory alloy outer connecting pipe which is expanded and flattened and is convex is wrapped at the gap of the adjacent metal pipes and outside the glue coating; 11. the shape memory alloy outer connecting pipe is heated to a temperature higher than the transformation temperature and is insulated; 12. the expanded shape memory alloy outer connecting pipe shrinks and is combined with the adjacent inner connecting resin pipe outer metal pipe and glue, the bulges at the two ends of the shape memory alloy outer connecting pipe are clamped in the grooves at the positions corresponding to the bulges outside the inner resin pipe outer metal pipe composite pipe, and the adjacent inner resin pipe outer metal pipe composite pipe is connected together.
The manufacturing method of the connection structure of the metal pipe composite pipe outside the inner resin pipe comprises the following steps: 1. resin powder is filled in the metal tube with two closed ends; 2. heating the metal tube; 3. heating the metal pipe to rotate at a high speed, and bonding the molten resin powder on the inner surface of the metal pipe under the action of centrifugal force to manufacture the metal pipe composite pipe outside the inner resin pipe; 4. heating the shape memory alloy outer connecting pipe to a temperature higher than the transformation temperature, making the inner diameter of the shape memory alloy outer connecting pipe 2% -8% larger than the outer diameter of the inner resin pipe outer metal pipe composite pipe, and making bulges at two ends of the shape memory alloy outer connecting pipe; 5. under the transformation temperature of the shape memory alloy outer connecting pipe, expanding the hole of the shape memory alloy outer connecting pipe and flattening the bulge; 6. processing a groove at the position outside the adjacent inner resin pipe, outside the metal pipe composite pipe and corresponding to the protrusion; 7. the shape memory alloy outer connecting pipe which is expanded and flattened and is convex is arranged outside the inner resin pipe outer metal pipe composite pipe; 8. heating the resin pipes in the adjacent metal pipes by the heating plate, extruding the adjacent metal pipes to the connecting gap, and bonding the melted inner resin pipes together; 9. gluing the gaps between adjacent metal pipes and the outside; 10. the shape memory alloy outer connecting pipe which is expanded and flattened and is convex is wrapped at the gap of the adjacent metal pipes and outside the glue coating; 11. the shape memory alloy outer connecting pipe is heated to a temperature higher than the transformation temperature and is insulated; 12. the expanded shape memory alloy outer connecting pipe shrinks and is combined with the adjacent inner connecting resin pipe outer metal pipe and glue, the bulges at the two ends of the shape memory alloy outer connecting pipe are clamped in the grooves at the positions corresponding to the bulges outside the inner resin pipe outer metal pipe composite pipe, and the adjacent inner resin pipe outer metal pipe composite pipe is connected together.
The shape memory alloy includes: Cu-Al-Ni shape memory alloy, Cu-Al-Mn shape memory alloy, Cu-Zn-Al shape memory alloy, TiNi series shape memory alloy, NiTiNb shape memory alloy, NiTiFe shape memory alloy, NiTiCu shape memory alloy, NiTiV shape memory alloy.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The invention is further described with reference to the drawings and examples in the following description.
FIG. 1 is a schematic view showing the assembly of adjacent resin-lined metal pipes with the technical features of the present invention before hot-melting with an electric heating plate and a shape memory alloy counterbore outer connecting pipe.
FIG. 2 is a schematic view showing the connection and assembly of the shrink shape memory outer connection tube and the glue to the adjacent metal tube of the resin lining layer above the heat transition temperature of FIG. 1.
FIG. 3 is a schematic end view of a shape memory alloy outer joint pipe having protrusions at both ends according to the technical features of the present invention.
FIG. 4 is a schematic view showing the assembly of the adjacent resin-lined metal tubes with the electric heating plate and the shape memory alloy counterbore outer connecting tube with the protrusions at both ends before the heat melting.
FIG. 5 is a schematic view of the connection assembly of the shape memory outer connecting pipe with bulges at two ends and the glue with the adjacent metal pipe with the resin lining layer and the groove above the heating transition temperature in FIG. 4.
FIG. 6 is a schematic view showing the assembly of the resin-lined elbow pipe with the electric heating plate and the shape memory alloy counterbore outer connecting pipe having protrusions at both ends before the resin-lined metal pipe is hot-melted.
FIG. 7 is a schematic view of the assembly of the contracted shape memory outer connecting tube and resin liner elbow and the resin liner metal tube and glue joint of FIG. 6 above the heat transition temperature.
Example 1
A schematic view of the assembly of the combination relationship between the electric heating plate and the shape memory alloy chambered outer connecting pipe before the hot melting of the adjacent lining resin layer metal pipe is shown in figure 1, and figure 2 is a schematic view of the connection assembly of the contracted shape memory alloy outer connecting pipe above the heating transition temperature in figure 1 and the connection assembly of glue and the adjacent lining resin layer metal pipe, wherein: 1 is a metal pipe, 2 is a lining resin pipe, 3 is a lining resin pipe protrusion, 4 is a resin pipe hole, 5 is another metal pipe, 6 is a lining resin pipe, 7 is a lining resin pipe protrusion, 8 is a resin pipe hole, 9 is a hot-melt connection resin pipe, 10 is a hot-melt connection back resin pipe hole, 11 is a shape memory alloy outer connecting pipe above a transition temperature, 12 is a shape memory alloy reaming outer connecting pipe below the transition temperature, 13 is a sealant, and 14 is an electric heating plate.
When manufacturing the shape memory alloy outer connecting pipe, the rubber and the adjacent metal pipe with the lining resin layer, the transformation temperature of the shape memory alloy outer connecting pipe is above, the inner diameter of the shape memory alloy outer connecting pipe 11 is made to be 3% smaller than the outer diameter of the metal pipe with the lining resin layer, the shape memory alloy outer connecting pipe 11 is reamed below the transformation temperature of the shape memory alloy outer connecting pipe, the end surface of the metal pipe 1 is removed, the lining resin pipe bulge 3 is manufactured, the end surface of the other metal pipe 5 is removed, the lining resin pipe bulge 7 is manufactured, the shape memory alloy reamed outer connecting pipe 12 below the transformation temperature is sleeved outside the other metal pipe 5, the lining resin pipe bulge 3 and the lining resin pipe bulge 7 are melted by the electric heating plate 14, the metal pipe 1 and the metal pipe 5 are extruded to the adjacent gap, the lining resin pipe bulge 3 and the lining resin pipe bulge 7 are fused, the gap between the metal pipe 1 and the metal pipe 5 and the outside are coated with glue 13, the reamed shape memory alloy outer connecting pipe 12 is wrapped at the gap between the metal pipe 1 and the metal pipe 5 and outside the glue 13, the shape memory alloy outer connecting pipe 12 is heated to a temperature higher than the transformation temperature of the shape memory alloy outer connecting pipe, heat is preserved, the reamed shape memory alloy outer connecting pipe 12 contracts and is recovered to the shape of the shape memory alloy outer connecting pipe 11, and the contracted shape memory alloy outer connecting pipe 11 is combined with the adjacent lining resin layer metal pipe 1, the metal pipe 5 and the glue 13.
Example 2
An end view of a shape memory alloy outer joint pipe having protrusions at both ends thereof is shown in FIG. 3, FIG. 4 is a view showing an assembled relationship between an electric heating plate and a shape memory alloy enlarged hole outer joint pipe having protrusions at both ends thereof before heat-melting adjacent resin-lined metal pipes,
FIG. 5 is a schematic view of the connection assembly of the shape memory alloy outer connecting tube with protrusions on both ends and the glue with the adjacent metal tube with the resin lining layer and the groove, contracted above the heating transition temperature in FIG. 4, wherein: 15 is a metal pipe, 16 is a lining resin pipe, 17 is a lining resin pipe protrusion, 18 is a metal pipe groove, 19 is a resin pipe hole, 20 is another metal pipe, 21 is a lining resin pipe, 22 is a lining resin pipe protrusion, 23 is a metal pipe groove, 24 is a resin pipe hole, 25 is a hot-melt connection resin pipe, 26 is a hot-melt connection resin pipe hole, 27 is a shape memory alloy outer connecting pipe above a transition temperature, 28 is an outer connecting pipe protrusion, 29 is a shape memory alloy reaming protrusion below the transition temperature, leveling the outer connecting pipe, 30 is an electric heating plate, and 31 is a sealant.
When manufacturing a metal pipe with a convex shape memory outer connection pipe at two ends and a concave groove on the rubber and the adjacent lining resin layer, the transition temperature of the shape memory alloy outer connection pipe is higher than the transition temperature, the inner diameter of the shape memory alloy outer connection pipe 27 is made to be 3% smaller than the outer diameter of the lining resin layer metal pipe 15, the transition temperature of the shape memory alloy outer connection pipe is lower than the transition temperature, the shape memory alloy outer connection pipe 27 is reamed and the outer connection pipe bulge 28 is flattened, the end surface of the metal pipe 15 is removed, the lining resin pipe bulge 17 is manufactured, the end surface of the other metal pipe 20 is removed, the lining resin pipe bulge 22 is manufactured, the shape memory alloy reamed and the bulge flattened outer connection pipe 29 below the transition temperature are sleeved outside the other metal pipe 20, the lining resin pipe bulge 17 and the lining resin pipe bulge 22 are melted by an electric heating plate 30, the metal pipe 15 and the metal pipe 20 are extruded to the, the method comprises the steps of manufacturing a hot-melt connection resin pipe 25, coating glue 31 at the gap between a metal pipe 15 and the metal pipe 20 and outside the gap, wrapping a hole-enlarged shape memory alloy outer connecting pipe 29 at the gap between the metal pipe 15 and the metal pipe 20 and outside the glue 31, heating the shape memory alloy outer connecting pipe 29 to a temperature higher than the transformation temperature of the shape memory alloy outer connecting pipe, preserving heat, shrinking the hole-enlarged shape memory alloy outer connecting pipe 29 to restore the shape of the shape memory alloy outer connecting pipe 27, combining the shrunk shape memory alloy outer connecting pipe 27 with the adjacent lining resin layer metal pipe 15, the lining resin layer metal pipe 20 and the glue 31, respectively clamping outer connecting pipe bulges 28 in a metal pipe groove 18 and a metal pipe groove 23, and connecting the adjacent lining resin layer metal pipe 15 and the lining resin layer metal pipe 20 together.
Example 3
A inside lining resin layer return bend and inside lining resin layer tubular metal resonator before hot melt with electric heating board and both ends have bellied shape memory alloy reaming outer joint pipe combination relation assembly sketch map as shown in figure 6, figure 7 is that figure 6 heats shrink shape memory above the transition temperature and closes outer joint pipe and inside lining resin layer return bend and inside lining resin layer tubular metal resonator and glue and connect the assembly sketch map, wherein: 31 is a metal pipe, 32 is a lining resin pipe, 33 is a lining resin pipe protrusion, 34 is a resin pipe hole, 35 is an outer metal bent pipe, 36 is a lining resin bent pipe, 37 is a lining resin bent pipe protrusion, 38 is a resin bent pipe hole, 39 is an electric heating plate, 40 is a hot-melt connection resin pipe, 41 is a hot-melt connection resin pipe hole, 42 is a shape memory alloy outer connecting pipe above a transition temperature, 43 is a shape memory alloy reaming outer connecting pipe below the transition temperature, and 44 is sealant.
When manufacturing the shape memory alloy outer connecting pipe and the rubber and lining resin layer bent pipe and lining resin layer straight metal pipe combined pipe, the inner diameter of the shape memory alloy outer connecting pipe 42 is made to be 3% smaller than the outer diameter of the lining resin layer metal pipe 31 and the lining resin layer bent pipe 35 above the transition temperature, the shape memory alloy outer connecting pipe 42 is reamed below the transition temperature of the shape memory alloy outer connecting pipe, the end face of the metal pipe 31 is removed, the lining resin pipe bulge 33 is manufactured, the end face of the outer metal bent pipe 35 is removed, the lining resin bent pipe bulge 37 is manufactured, the shape memory alloy reamed outer connecting pipe 43 below the transition temperature is sleeved outside the metal pipe 31, the lining resin pipe bulge 33 and the lining resin bent pipe bulge 37 are melted by the electric heating plate 39, the metal pipe 31 and the outer metal bent pipe 35 are extruded to the adjacent gap, the lining resin pipe bulge 31 and the lining resin bent pipe bulge, the hot-melt connection resin pipe 40 is manufactured, glue 44 is coated at the gap between the metal pipe 31 and the outer metal bent pipe 35 and outside the gap, the expanded shape memory alloy outer connecting pipe 43 is wrapped at the gap between the metal pipe 31 and the outer metal bent pipe 35 and outside the glue 44, the shape memory alloy outer connecting pipe 43 is heated to be higher than the transformation temperature of the shape memory alloy outer connecting pipe, heat is preserved, the expanded shape memory alloy outer connecting pipe 43 is contracted and is restored to the shape of the shape memory alloy outer connecting pipe 42, and the contracted shape memory alloy outer connecting pipe 42 is combined with the adjacent metal pipe 31 with the inner lining resin layer, the outer metal bent pipe 35 and the glue 44.
Claims (10)
1. Interior resin outside of tubes metal pipe composite tube connection structure includes: the composite metal pipe and the shape memory alloy outer connecting pipe are characterized in that: heating the shape memory alloy outer connecting pipe to a temperature higher than the transformation temperature, making the inner diameter of the shape memory alloy outer connecting pipe 2-8% larger than the outer diameter of the inner resin pipe outer metal pipe composite pipe, under the transformation temperature of the shape memory alloy outer connecting pipe, expanding the hole of the shape memory alloy outer connecting pipe, placing the expanded shape memory alloy outer connecting pipe outside the inner resin pipe and the outer metal pipe composite pipe, heating the adjacent metal composite pipe inner resin pipe by a heating device, melting and bonding the adjacent metal composite pipe inner resin pipe together, coating glue at the gap and outside of the adjacent metal composite pipe, wrapping the expanded shape memory alloy outer connecting pipe at the gap and outside of the adjacent metal composite pipe, keeping the temperature of the shape memory alloy outer connecting pipe above the transformation temperature by heating, and combining the expanded shape memory alloy outer connecting pipe with the adjacent inner resin pipe outer metal pipe composite pipe and the glue.
2. Interior resin outside of tubes metal pipe composite tube connection structure includes: the composite metal pipe and the shape memory alloy outer connecting pipe are characterized in that: heating the shape memory alloy outer connecting pipe to a temperature above the transformation temperature, making the inner diameter of the shape memory alloy outer connecting pipe 2% -8% larger than the outer diameter of the inner resin pipe outer metal pipe composite pipe, making bulges at both ends of the shape memory alloy outer connecting pipe, processing grooves at the positions corresponding to the bulges outside the adjacent inner resin pipe outer metal pipe composite pipe, reaming the shape memory alloy outer connecting pipe and flattening the bulges below the transformation temperature, placing the reamed and flattened shape memory alloy outer connecting pipe outside the inner resin pipe composite pipe, heating the adjacent metal composite pipe inner resin pipe by a heating device, melting and bonding the adjacent metal composite pipe inner resin pipes together, coating glue at the gaps and the outer parts of the adjacent metal composite pipes, wrapping the reamed and flattened shape memory alloy outer connecting pipe at the gaps and the outer parts of the adjacent metal composite pipes, and heating the shape memory alloy outer connecting pipe to a temperature above the transformation temperature, and (4) preserving heat, wherein the expanded shape memory alloy outer connecting pipe is contracted to be combined with the adjacent inner resin pipe outer metal pipe composite pipe and glue, and the bulges at the two ends of the shape memory alloy outer connecting pipe are clamped into the grooves at the positions outside the inner resin pipe outer metal pipe composite pipe corresponding to the bulges.
3. Interior resin outside of tubes metal pipe composite tube connection structure includes: the method comprises the steps of heating the shape memory alloy outer connecting pipe to a temperature above the transformation temperature, manufacturing the inner diameter of the shape memory alloy outer connecting pipe to a temperature 2% -8% larger than the outer diameter of the metal pipe and the outer diameter of the bent pipe or the multi-way pipe and below the transformation temperature of the shape memory alloy outer connecting pipe, expanding the shape memory alloy outer connecting pipe, placing the expanded shape memory alloy outer connecting pipe outside the metal composite pipe, heating the resin pipe in the metal composite pipe and the bent pipe or the multi-way pipe by a heating plate, extruding the metal composite pipe to the connecting gap of the bent pipe or the multi-way pipe, bonding the molten resin pipe in the bent pipe or the multi-way pipe and the molten resin pipe in the metal composite pipe together, coating glue on the gap of the bent pipe or the multi-way pipe and the outside of the metal composite pipe, wrapping the expanded shape memory alloy outer connecting pipe at the gap of the bent pipe or the through pipe and the metal composite, the shape memory alloy outer connecting pipe is heated to a temperature higher than the transition temperature, heat is preserved, and the reamed shape memory alloy outer connecting pipe shrinks to be combined with the inner resin bent pipe or the inner resin multi-way pipe and the inner resin outer metal pipe and glue.
4. Interior resin outside of tubes metal pipe composite tube connection structure includes: heating the shape memory alloy outer connecting pipe above the transition temperature, making the inner diameter of the shape memory alloy outer connecting pipe 2% -8% larger than the outer diameter of the inner resin outer metal pipe composite pipe and the outer diameter of the inner resin bent pipe or the inner resin multi-way pipe, making two ends of the shape memory alloy outer connecting pipe bulge below the transition temperature of the shape memory alloy outer connecting pipe, reaming the shape memory alloy outer connecting pipe, flattening the bulges at the two ends of the outer connecting pipe, processing a groove outside the end of the metal composite pipe, processing a groove outside the end of the inner resin bent pipe or the inner resin multi-way pipe, placing the reamed shape memory alloy outer connecting pipe outside the inner resin outer metal pipe composite pipe, heating the resin pipe and the bent pipe or the inner resin multi-way pipe inside the metal pipe by a heating plate, extruding the inner resin metal pipe to the joint of the inner resin bent pipe or the inner resin multi-way pipe, the method comprises the steps that a molten resin pipe in a bent pipe or a multi-way pipe is bonded with a molten resin pipe in a metal pipe, glue is applied to the gap between the bent pipe or the multi-way pipe and the metal pipe and the outside of the bent pipe or the multi-way pipe, a hole expanding and flattening convex shape memory alloy outer connecting pipe is wrapped at the gap between the bent pipe or the multi-way pipe and the metal composite pipe and outside of the glue, the shape memory alloy outer connecting pipe is heated to be above the transition temperature, heat is preserved, the hole expanding shape memory alloy outer connecting pipe shrinks and is bonded with the inner resin bent pipe or the inner resin multi-way pipe and the inner resin metal composite pipe together, the bulges at the two ends of the shape memory alloy outer connecting pipe are clamped into the outer groove at the end part of the metal composite.
5. The manufacturing method of the connection structure of the metal pipe composite pipe outside the inner resin pipe comprises the following steps: 1. heating the shape memory alloy outer connecting pipe to a temperature higher than the transformation temperature, and making the inner diameter of the shape memory alloy outer connecting pipe 2% -8% larger than the outer diameter of the inner resin pipe outer metal pipe composite pipe; 2. expanding the outer connecting pipe of the shape memory alloy below the transformation temperature of the outer connecting pipe of the shape memory alloy; 3. the outer connecting pipe of the expanded shape memory alloy is arranged outside the inner resin metal pipe; 4. heating resin pipes in adjacent metal pipes by the heating plate, extruding the adjacent metal pipes to the connecting gap, and bonding the adjacent molten inner resin pipes together; 5. gluing the gaps between adjacent metal pipes and the outside; 6. the expanded shape memory alloy outer connecting pipe is wrapped at the gap between the adjacent metal pipes and outside the glue coating; 7. the shape memory alloy outer connecting pipe is heated to a temperature higher than the transformation temperature and is insulated; 8. the enlarged shape memory alloy outer connecting tube contracts to bond the adjacent inner connecting resin tube and resin layer and outer metal tube and glue together.
6. The manufacturing method of the connection structure of the metal pipe composite pipe outside the inner resin pipe comprises the following steps: 1. heating the shape memory alloy outer connecting pipe to a temperature higher than the transformation temperature, making the inner diameter of the shape memory alloy outer connecting pipe 2% -8% larger than the outer diameter of the inner resin pipe outer metal pipe composite pipe, and making bulges at two ends of the shape memory alloy outer connecting pipe; 2. under the transformation temperature of the shape memory alloy outer connecting pipe, expanding the hole of the shape memory alloy outer connecting pipe and flattening the bulge; 3. processing a groove at the position outside the adjacent inner resin pipe, outside the metal pipe composite pipe and corresponding to the protrusion; 4. the shape memory alloy outer connecting pipe which is expanded and flattened and is convex is arranged outside the inner resin pipe outer metal pipe composite pipe; 5. heating resin pipes in adjacent metal pipes by the heating plate, extruding the adjacent metal pipes to the connecting gap, and bonding the adjacent molten inner resin pipes together; 6. gluing the gaps between adjacent metal pipes and the outside; 7. the shape memory alloy outer connecting pipe which is expanded and flattened and is convex is wrapped at the gap of the adjacent metal pipes and outside the glue coating; 8. the shape memory alloy outer connecting pipe is heated to a temperature higher than the transformation temperature and is insulated; 9. the expanded shape memory alloy outer connecting pipe shrinks and is combined with the adjacent inner connecting resin pipe outer metal pipe and glue, the bulges at the two ends of the shape memory alloy outer connecting pipe are clamped in the grooves at the positions corresponding to the bulges outside the inner resin pipe outer metal pipe composite pipe, and the adjacent inner resin pipe outer metal pipe composite pipe is connected together.
7. The manufacturing method of the connection structure of the metal pipe composite pipe outside the inner resin pipe comprises the following steps: 1. heating the shape memory alloy outer connecting pipe to a temperature higher than the transformation temperature, and making the inner diameter of the shape memory alloy outer connecting pipe 2% -8% larger than the outer diameter of the inner resin pipe outer metal pipe composite pipe and the outer diameter of the inner resin bent pipe or the inner resin multi-way pipe; 2. expanding the outer connecting pipe of the shape memory alloy below the transformation temperature of the outer connecting pipe of the shape memory alloy; 3. the expanded shape memory alloy outer connecting pipe is arranged outside the inner resin pipe outer metal pipe composite pipe and outside the inner resin bent pipe or the inner resin multi-way pipe; 4. the heating plate heats the resin pipe in the metal pipe and the resin pipe in the bent pipe or the multi-way pipe, the metal pipe extrudes to the connecting gap of the bent pipe or the multi-way pipe, and the molten resin pipe in the bent pipe or the multi-way pipe is bonded with the molten resin pipe in the metal pipe; 5. glue is coated at the gap between the bent pipe or the multi-way pipe and the metal pipe and the outside; 6. the outer connecting pipe of the expanded shape memory alloy is wrapped at the gap between the bent pipe or the multi-way pipe and the metal pipe and outside the glue coating; 7. the shape memory alloy outer connecting pipe is heated to a temperature higher than the transformation temperature and is insulated; 8. the outer connecting pipe of the shape memory alloy is contracted and combined with the inner resin bent pipe or the inner resin multi-way pipe and the inner resin outer metal pipe and glue.
8. The manufacturing method of the connection structure of the metal pipe composite pipe outside the inner resin pipe comprises the following steps: 1. heating the shape memory alloy outer connecting pipe to a temperature higher than the transformation temperature, making the inner diameter of the shape memory alloy outer connecting pipe 2% -8% larger than the outer diameter of the inner resin pipe outer metal pipe composite pipe and the outer diameter of the inner resin bent pipe or the inner resin multi-way pipe, and making bulges at two ends of the shape memory alloy outer connecting pipe; 2. under the transformation temperature of the shape memory alloy outer connecting pipe, expanding the hole of the shape memory alloy outer connecting pipe and flattening the bulges at the two ends of the outer connecting pipe; 3. processing a groove outside the end part of the metal pipe; 4. the outer end of the inner resin bent pipe or the inner resin multi-way pipe is provided with a groove, and 5, a shape memory alloy outer connecting pipe which is expanded is arranged outside the inner resin pipe outer metal pipe composite pipe; 6. the heating plate heats the resin pipe in the metal pipe and the resin pipe in the bent pipe or the multi-way pipe, the metal pipe extrudes to the connecting gap of the bent pipe or the multi-way pipe, and the molten resin pipe in the bent pipe or the multi-way pipe is bonded with the molten resin pipe in the metal pipe; 7. glue is coated at the gap between the bent pipe or the multi-way pipe and the metal pipe and the outside; 8. the shape memory alloy outer connecting pipe which is expanded and flattened and is convex is wrapped at the gap between the bent pipe or the multi-way pipe and the metal pipe and outside the glue coating; 9. the shape memory alloy outer connecting pipe is heated to a temperature higher than the transformation temperature and is insulated; 10. the expanded shape memory alloy outer connecting pipe shrinks and is combined with the inner resin bent pipe or the inner resin multi-way pipe and the inner resin outer metal pipe and glue, the bulges at the two ends of the shape memory alloy outer connecting pipe are clamped into the outer groove at the end part of the inner resin outer metal pipe composite pipe and the outer groove at the end part of the inner resin bent pipe or the inner resin multi-way pipe, and the inner resin bent pipe or the inner resin multi-way pipe is connected with the inner resin metal pipe.
9. The manufacturing method of the connection structure of the metal pipe composite pipe outside the inner resin pipe comprises the following steps: 1. gluing outside the resin pipe; 2. the gummed resin pipe is arranged in the metal pipe; 3. high-temperature high-pressure gas enters the resin pipes with the two closed ends, the resin pipes expand, the expanded resin pipes are bonded with the inner walls of the outer metal pipes by glue, and the outer metal pipe composite pipes of the inner resin pipes are manufactured; 4. heating the shape memory alloy outer connecting pipe to a temperature higher than the transformation temperature, making the inner diameter of the shape memory alloy outer connecting pipe 2% -8% larger than the outer diameter of the inner resin pipe outer metal pipe composite pipe, and making bulges at two ends of the shape memory alloy outer connecting pipe; 5. under the transformation temperature of the shape memory alloy outer connecting pipe, expanding the hole of the shape memory alloy outer connecting pipe and flattening the bulge; 6. processing a groove at the position outside the adjacent inner resin pipe, outside the metal pipe composite pipe and corresponding to the protrusion; 7. the shape memory alloy outer connecting pipe which is expanded and flattened and is convex is arranged outside the inner resin pipe outer metal pipe composite pipe; 8. heating the resin pipes in the adjacent metal pipes by the heating plate, extruding the adjacent metal pipes to the connecting gap, and bonding the melted inner resin pipes together; 9. gluing the gaps between adjacent metal pipes and the outside; 10. the shape memory alloy outer connecting pipe which is expanded and flattened and is convex is wrapped at the gap of the adjacent metal pipes and outside the glue coating; 11. the shape memory alloy outer connecting pipe is heated to a temperature higher than the transformation temperature and is insulated; 12. the expanded shape memory alloy outer connecting pipe shrinks and is combined with the adjacent inner connecting resin pipe outer metal pipe and glue, the bulges at the two ends of the shape memory alloy outer connecting pipe are clamped in the grooves at the positions corresponding to the bulges outside the inner resin pipe outer metal pipe composite pipe, and the adjacent inner resin pipe outer metal pipe composite pipe is connected together.
10. The manufacturing method of the connection structure of the metal pipe composite pipe outside the inner resin pipe comprises the following steps: 1. resin powder is filled in the metal tube with two closed ends; 2. heating the metal tube; 3. heating the metal pipe to rotate at a high speed, and bonding the molten resin powder on the inner surface of the metal pipe under the action of centrifugal force to manufacture the metal pipe composite pipe outside the inner resin pipe; 4. heating the shape memory alloy outer connecting pipe to a temperature higher than the transformation temperature, making the inner diameter of the shape memory alloy outer connecting pipe 2% -8% larger than the outer diameter of the inner resin pipe outer metal pipe composite pipe, and making bulges at two ends of the shape memory alloy outer connecting pipe; 5. under the transformation temperature of the shape memory alloy outer connecting pipe, expanding the hole of the shape memory alloy outer connecting pipe and flattening the bulge; 6. processing a groove at the position outside the adjacent inner resin pipe, outside the metal pipe composite pipe and corresponding to the protrusion; 7. the shape memory alloy outer connecting pipe which is expanded and flattened and is convex is arranged outside the inner resin pipe outer metal pipe composite pipe; 8. heating the resin pipes in the adjacent metal pipes by the heating plate, extruding the adjacent metal pipes to the connecting gap, and bonding the melted inner resin pipes together; 9. gluing the gaps between adjacent metal pipes and the outside; 10. the shape memory alloy outer connecting pipe which is expanded and flattened and is convex is wrapped at the gap of the adjacent metal pipes and outside the glue coating; 11. the shape memory alloy outer connecting pipe is heated to a temperature higher than the transformation temperature and is insulated; 12. the expanded shape memory alloy outer connecting pipe shrinks and is combined with the adjacent inner connecting resin pipe outer metal pipe and glue, the bulges at the two ends of the shape memory alloy outer connecting pipe are clamped in the grooves at the positions corresponding to the bulges outside the inner resin pipe outer metal pipe composite pipe, and the adjacent inner resin pipe outer metal pipe composite pipe is connected together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010100312.5A CN111207252A (en) | 2020-02-18 | 2020-02-18 | Connecting structure of metal pipe composite pipe outside inner resin pipe and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010100312.5A CN111207252A (en) | 2020-02-18 | 2020-02-18 | Connecting structure of metal pipe composite pipe outside inner resin pipe and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111207252A true CN111207252A (en) | 2020-05-29 |
Family
ID=70786991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010100312.5A Pending CN111207252A (en) | 2020-02-18 | 2020-02-18 | Connecting structure of metal pipe composite pipe outside inner resin pipe and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111207252A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113001999A (en) * | 2021-03-09 | 2021-06-22 | 北京市公用工程设计监理有限公司 | Non-welding connection construction method for PE natural gas pipe |
| WO2023124754A1 (en) * | 2021-12-31 | 2023-07-06 | 中国石油天然气集团有限公司 | Non-welding repair method for coiled tubing |
-
2020
- 2020-02-18 CN CN202010100312.5A patent/CN111207252A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113001999A (en) * | 2021-03-09 | 2021-06-22 | 北京市公用工程设计监理有限公司 | Non-welding connection construction method for PE natural gas pipe |
| WO2023124754A1 (en) * | 2021-12-31 | 2023-07-06 | 中国石油天然气集团有限公司 | Non-welding repair method for coiled tubing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1269099B1 (en) | Method for manufacturing a double-walled heat exchanging tube with leak detection | |
| EP1268115B1 (en) | Method of joining metal oilfield tubulars and well provided therewith | |
| RU2178355C2 (en) | Tubular product, methods for its production and use (versions) | |
| CN111207252A (en) | Connecting structure of metal pipe composite pipe outside inner resin pipe and manufacturing method thereof | |
| GB2149468A (en) | Heat shrinkable pipe coupling | |
| US4693501A (en) | Refrigeration tubing joint | |
| US3042428A (en) | Copper-aluminum tubular connector | |
| WO2010121339A1 (en) | Method for the highly-thick thermal coating of joints by using electrofusion in pipes used for conducting fluids, made of steel tubes externally coated with polyolefins | |
| HU218763B (en) | A method of joining reinforced thermoplastic elements, especially pipes | |
| US5775736A (en) | Plastic pipe fittings | |
| CN116697154A (en) | Bending double-layer pipe with good heat insulation and manufacturing method thereof | |
| JP5260126B2 (en) | Resin tube with cap | |
| CN201327343Y (en) | Thread jointed structure between heat exchange tube and tube plate of heat exchanger | |
| US8991869B2 (en) | Tube coupling apparatus having liquefiable metal sealing layer | |
| WO2023124754A1 (en) | Non-welding repair method for coiled tubing | |
| JP2736804B2 (en) | Manufacturing method of synthetic resin pipe joint | |
| CN103384791B (en) | Pipe joint between two metal tubes and form the method for this pipe joint | |
| CN212430125U (en) | High pressure steel wire pipe plastic turn-ups connection structure and high pressure steel wire pipe | |
| CN107270008A (en) | One kind welding line plastic-steel tube and preparation method thereof | |
| CN214197639U (en) | Pipe fitting connection structure, heat exchanger and air conditioner | |
| CN216952176U (en) | Drain pipe with electromagnetic melt rubber ring double-sealing structure | |
| JPH01229188A (en) | Manufacture of duplex tube | |
| CN115992914A (en) | Flexible composite pipeline joint structure and preparation method thereof | |
| WO2007147298A1 (en) | A hot-melt connecting socket pipe fitting and the connecting method of the same | |
| RU2227241C1 (en) | Connection of enameled pipes and method for making thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication |