CN208058234U - Heavy antisepsis combustion gas moulds crossover sub with steel - Google Patents
Heavy antisepsis combustion gas moulds crossover sub with steel Download PDFInfo
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- CN208058234U CN208058234U CN201721780392.3U CN201721780392U CN208058234U CN 208058234 U CN208058234 U CN 208058234U CN 201721780392 U CN201721780392 U CN 201721780392U CN 208058234 U CN208058234 U CN 208058234U
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Abstract
The utility model is related to a kind of heavy antisepsis combustion gas steel to mould crossover sub, inserting paragraph is inserted into major diameter pipeline section before tube body, and the outer wall of inserting paragraph and the inner wall of the major diameter pipeline section are interference fitted before the tube body, the left side that section is limited in the right side of major diameter pipeline section and tube body offsets, before tube body multiple annular barb structures are equidistantly provided on the leading portion of inserting paragraph and stage casing outer wall, before tube body first annular seal groove is offered on the endpiece outer wall of inserting paragraph, first sealing ring is housed in first annular seal groove, second sealing ring is arranged between inserting paragraph end face before the tube body of the path pipeline section end face of the vinyon pipe fitting and the metal inner lining part, the second seal groove for being placed in the second sealing ring is offered before tube body on inserting paragraph end face, it is arranged with metal jacket pipe on path pipeline section.The beneficial effects of the utility model are：Service life identical with polyethylene pipe is realized in the anti-corrosion effect more excellent far beyond other similar products, perfection.
Description
Technical field
The utility model is related to conduit coupling technical fields more particularly to a kind of modeling conversion of heavy antisepsis combustion gas steel to connect
Head.
Background technology
At present in field of fluid such as combustion gas, the usually metallic conduits such as steel pipe and polyethylene（PE）Plastic conduit,
Wherein metallic conduit is usually used in Intermediate High Pressure fluid conveying, and plastic conduit is then generally used for low-pressure fluid conveying；In addition, in order to
For the sake of safety, national correlation engineering specification regulation, plastic conduit does not allow the interior for the end-user for being directly entered pipeline.Cause
This is when pressure piping is registered one's residence to low pressure pipeline transition and plastic conduit from garden pipe, it usually needs uses polyethylene（PE）
Steel moulds crossover sub.Polyethylene（PE）The antiseptic property of pipeline is very prominent, and design service life is 50 years, and therewith
Its own antiseptic property of steel pipe end of mating steel modeling crossover sub does not catch up with polyethylene much（PE）The requirement of pipe, in addition steel is moulded
Crossover sub majority is embedded in moist underground, or exposure is in air, therefore requires its corrosion-resistant very high.
Common steel modeling conversion usually in the anti-corrosion materials such as steel pipe end external spray epoxy resin or polyethylene, storage and transportation,
During installation and onsite application, because the factors influence such as colliding with, scratches, easily there is erosion resistant coating and fall off problem, anti-corrosion effect with
Service life is undesirable.And also reinforcing anti-corrosion measure using other multilayers in engineering at present, also tend to there are complex procedures,
Construction requirement is high, anti-corrosion material can not simultaneously with steel pipe and polyethylene（PE）Between pipe simultaneously durable bond the defects of, exist each
It the problem of kind various kinds, is difficult to reach perfect unification in terms of anti-corrosion effect and economy.
Application No. is 201210090942.4 utility model patents to disclose a kind of reinforcement anti-corrosion polyethylene steel-plastic conversion
Connector and processing technology, can to solve the above technical problems, but there is also deficiencies：1, metal inner lining part and vinyon pipe fitting
Inner circle size is inconsistent, not can guarantee that flow is not influenced by latus rectum variation in gas transmission process.2, the outside of metal tube adds
The annular groove of Gong You 5-8 road back-off structures and 2 to 3 circles for installing O shape sealing rings；The back-off structure and annular groove position
In the position of vinyon pipe fitting and metal tube socket place；The annular groove be located at socket place both sides or both sides with it is intermediate
Position, sealing effect are poor.3, it is solvent-free uniformly to coat DH of a layer thickness in 0.5 ± 0.1mm outside metal tube for needs
Epoxy coating influences the construction of hot melt adhesive winding layer.
Utility model content
Technical problem to be solved in the utility model is：A kind of heavy antisepsis combustion gas steel modeling crossover sub and its system are provided
Method is made, by the selection of perfect design of Sealing Structure and compatible anti-corrosion material between modeling, steel, reaches perfect anti-corrosion
Effect.
The utility model be solve the problems, such as it is set forth above used by technical solution be：
A kind of heavy antisepsis combustion gas steel modeling crossover sub, including vinyon pipe fitting 1, metal inner lining part 2, metal-coating
Pipe 3, annular barb structure 4, first annular seal groove 5, the first sealing ring 6, electro-galvanized layer 7, hot melt adhesive winding layer 8, PEX heat are received
Heat-Shrinkable Tubings 9, the second sealing ring 10 and the second seal groove 11, the vinyon pipe fitting 1 include the major diameter pipeline section being wholely set
1.1 and path pipeline section 1.2, the internal diameter of major diameter pipeline section 1.1 is more than the internal diameter of path pipeline section 1.2, the internal diameter of the path pipeline section 1.2
Tube body equal with the internal diameter of metal inner lining part 2, that metal inner lining part 2 is integrally formed and internal diameter is consistent comprising be wholely set
Tube body before limit section 2.2 and tube body tail linkage section 2.3 in inserting paragraph 2.1, tube body, the both ends difference of limit section 2.2 in tube body
It is connect with section 2.2 is limited in inserting paragraph before tube body 2.1, tube body, the outer diameter that section 2.2 is limited in tube body is more than inserting paragraph before tube body
2.1 outer diameter, inserting paragraph 2.1 is inserted into major diameter pipeline section 1.1 before tube body, and before the tube body outer wall of inserting paragraph 2.1 with it is described
The inner wall of major diameter pipeline section 1.1 is interference fitted, and the left side of limit section 2.2 offsets in the right side of major diameter pipeline section 1.1 and tube body, greatly
The outer diameter of diameter pipeline section 1.1 is more than the outer diameter that section 2.2 is limited in tube body, and the leading portion and stage casing outer wall of inserting paragraph 2.1 are first-class before tube body
Away from multiple annular barb structures 4 are provided with, first annular seal groove 5 is offered on the endpiece outer wall of inserting paragraph 2.1 before tube body,
First sealing ring 6 is housed in one annular seal groove 5, second sealing ring 10 is arranged in the small of the vinyon pipe fitting 1
Before the tube body of 1.2 end face of diameter pipeline section and the metal inner lining part 2 between 2.1 end face of inserting paragraph, before tube body on 2.1 end face of inserting paragraph
The second seal groove 11 for being placed in the second sealing ring 10 is offered, metal jacket pipe 3, tube body are arranged on path pipeline section 1.2
The outer wall of middle limit section 2.2, tube body tail linkage section 2.3 and metal jacket pipe 3 all has electro-galvanized layer 7.
The hot melt adhesive winding layer 8 includes Hot melt adhesive tape, the Hot melt adhesive tape winding ranging from major diameter pipeline section 1.1
Left side, the outer wall of metal jacket pipe 3, the left side of major diameter pipeline section 1.1, the outer wall, tube body tail of limit section 2.2 connect in tube body
The outer wall of section 2.3 is connect, PEX thermal contraction casing tubes 9 are sleeved on the outside for covering hot melt adhesive winding layer 8.
The Hot melt adhesive tape is polyethylene hot-melt adhesive band.
The polyethylene hot-melt adhesive band, is squeezed out by polyethylene bonding resin, including weight percent is 70%
HDPE, the LLDPE that weight percent is 20-25%, the maleic anhydride that weight percent is 1%-3.5%, weight percent are
0.1% peroxide cross-linking agent, the acetone that weight percent is 0.1%；Wherein, HDPE is high density polyethylene (HDPE), tensile strength
>=23Mpa or more, elongation at break >=600% or more, Vicat softening point >=120 DEG C or more, melt flow rate (MFR) 1g/10min with
On；LLDPE is linear low density polyethylene, fracture tensile strength >=10Mpa or more, elongation at break >=1000% or more, dimension card
Softening point >=95 DEG C or more, melt flow rate (MFR) 20g/10min or more.
The peroxide cross-linking agent is cumyl peroxide.
The outer diameter that section 2.2 is limited in the tube body is more than the outer diameter of tube body tail linkage section 2.3, and section 2.2 is limited in tube body
Left side be plane, the right side of limit section 2.2 is slope surface in tube body.
Before the tube body 3-5 annular barb structure 4 is equidistantly provided on the leading portion of inserting paragraph 2.1 and stage casing outer wall.
The major diameter pipeline section 1.1 is equal with the outer wall thickness of path pipeline section 1.2.
The vinyon pipe fitting 1 is produced using high-strength P20 pre-hardening materials matter mold injection.
The metal inner lining part 2 and metal jacket pipe 3 uses the seamless steel pipe that yield strength is not less than 235MPa
（45#）Processing.
The endoporus that inserting paragraph before tube body 2.1 is pressed into forcing press by the way of interference fit to major diameter pipeline section 1.1.
First sealing ring 6 and the second sealing ring 10 is butyronitrile sealing ring.
Circular portion is machined with 0.9 ° -1.1 ° tapers in the metal jacket pipe 3, and axial dimension is slightly less than matched
1.1 length of major diameter pipeline section.
Circular portion is interference fitted with 1.1 outer circle portion of major diameter pipeline section in the metal jacket pipe 3.
The manufacturing method of crossover sub is moulded in a kind of heavy antisepsis combustion gas with steel, is included the following steps：
1）Accessory prepares：Blanking is carried out to metal inner lining part 2, metal jacket pipe 3 using sawing machine, is selected for processing metal
Inner piece 2 and the seamless steel pipe of metal jacket pipe 3 one and seamless steel pipe two, sawing machine are intercepted to specific length size, prepare to be used for
Lathe finishes；Injection molding produces 1 blank of vinyon pipe fitting, places and is not less than 20 days under room temperature, to ensure blank dimension
It fully shrinks, eliminate internal stress in injection moulding process；
2）Accessory finishes：Seamless steel pipe one and two lathe of seamless steel pipe are finished；Using lathe to seamless steel pipe one
Metal inner lining part 2, the tube body that metal inner lining part 2 is integrally formed and internal diameter is consistent comprising be wholely set is made in turning
Section 2.2 and tube body tail linkage section 2.3 are limited before tube body in inserting paragraph 2.1, tube body, the outer diameter that section 2.2 is limited in tube body is more than pipe
The outer diameter of inserting paragraph 2.1 before body, while also utilizing lathe to first annular seal groove 5, the annular barb knot on metal inner lining part 2
Structure 4, the second seal groove 11 are processed, and first annular seal groove 5 is located at before tube body on the endpiece outer wall of inserting paragraph 2.1, and second
Seal groove 11 is located at before tube body on 2.1 end face of inserting paragraph；Using lathe to two turning of seamless steel pipe and inner circle, it is made outside metal
Casing 3, circular portion is machined with 0.9 ° -1.1 ° tapers in metal jacket pipe 3；The rounded ends in vinyon pipe fitting blank
It is machined with ramp down angle, vinyon pipe fitting 1 is made, it is convenient to be assembled with metal inner lining part 2；The above accessory, to ensure assembly essence
Degree, dimensioned tolerance should all control within ± 0.03mm；
3) it assembles：Butyronitrile sealing ring is placed in first annular seal groove 5, the second seal groove 11；By vinyon
Pipe fitting 1 and metal inner lining part 2 are respectively placed on hydraulic thrust machine, ensure two element coaxials, it is conllinear after, and be fixedly clamped, borrow
Help hydraulic thrust by vinyon pipe fitting 1 and the axial pushing of metal jacket pipe 3, until being limited at section 2.2 in tube body, to ensure
Circular portion tight interference fit and dimensional accuracy in 2 excircle part of metal inner lining part and matched vinyon pipe fitting 1
It is required that reach two kinds of Material Strengths of connection and sealing double effects, metal inner lining part 2 and vinyon pipe fitting after press fitting
1 inner circle size is almost the same, it is ensured that flow is not influenced by latus rectum variation in gas transmission process；By 3 inner circle of metal jacket pipe
The two is pushed, cooperation equally by hydraulic thrust machine, reaches tight interference by part and 1 excircle part of vinyon pipe fitting
Coordinate purpose；
4) metal inner lining part 2, metal jacket pipe 3 and the processing of 1 outer roll cover of vinyon pipe fitting：By electrogalvanizing anti-corrosion
Treated metal inner lining part 2, metal jacket pipe 3, surface cleaning processing, degrease, moisture, impurity, and 170 DEG C of progress-
190 DEG C of high temperature preheating, then by wide 40-50mm, the polyethylene hot-melt adhesive band of thick 0.5-0.8mm, according to spiral overlapping mode
Seamless winding is close, and purpose covers metal jacket pipe 3, metal inner lining part 2 comprehensively；Select tensile strength >=16MPa, resistance to ring
The border stress cracking time >=1000h, and the PEX thermal contraction casing tubes 9 of width are corresponded to, hot melt adhesive winding layer 8 will be pre-coated with
The metalwork divided covers comprehensively.
Using special flame gun, between ignition temperature controls 270-360 DEG C, opsition dependent successively to PEX thermal contraction casing tubes 9 outside
Heated on surface；To ensure PEX heat-shrinkable T bush outer surface because of the excessively high carbonization of temperature, needs to use short cycle, come repeatedly
The mode of the dynamic heating of flyback, local continuous stop heating time no more than 3s.Heat shrinking sleeve heat retraction fully after heating, tightly
Close holding is in the outside of hot melt adhesive, and the heat passed over by PEX heat shrinking sleeves further melts internal polyethylene heat
Melten gel makes the hot melt adhesive upper and lower surface of melting mould the abundant welding in crossover sub steel pipe end one with heat shrinking sleeve and steel respectively
It rises.
The polyethylene hot-melt adhesive band, is squeezed out by special polyethylene bonding resin, and material composition weight ratio is：HDPE
70%, LLDPE 20-25%%, maleic anhydride 1%-3.5%, peroxide cross-linking agent 0.1%, acetone 0.1%；Wherein, HDPE
For high density polyethylene (HDPE), tensile strength >=23Mpa or more, elongation at break >=600% or more, Vicat softening point >=120 DEG C with
Upper, melt flow rate (MFR) 1g/10min or more；LLDPE is linear low density polyethylene, fracture tensile strength >=10Mpa or more,
Elongation at break >=1000% or more, Vicat softening point >=95 DEG C or more, melt flow rate (MFR) 20g/10min or more.
The peroxide cross-linking agent is cumyl peroxide.
The beneficial effects of the utility model are：1, by design of Sealing Structure perfect between plastic end, steel part, mutually
The selection of compatible anti-corrosion material and unique treatment process, no matter so that it is guaranteed that the utility model direct-burried is in underground or naked
It is exposed in air, the anti-corrosion effect more excellent far beyond other similar products, use identical with polyethylene pipe is realized in perfection
Service life.2, metal inner lining part is consistent with vinyon pipe fitting inner circle size, it is ensured that flow is not by logical in gas transmission process
Diameter variation influences.3, first annular seal groove is offered before tube body on the endpiece outer wall of inserting paragraph, first annular seal groove is built-in
There are the first sealing ring, second sealing ring to be arranged in the path pipeline section end face and the metal of the vinyon pipe fitting
It is offered on inserting paragraph end face before the tube body of backing member between inserting paragraph end face, before tube body second close for being placed in the second sealing ring
Sealing groove, sealing effect are preferable.3, it is arranged with metal jacket pipe on path pipeline section, section, tube body tail linkage section and gold are limited in tube body
The outer wall for belonging to outer tube all has electro-galvanized layer, and good heat conductivity does not interfere with the construction of hot melt adhesive winding layer.It 4, will be before tube body
Inserting paragraph is pressed into the endoporus of major diameter pipeline section with forcing press by the way of interference fit, using the leading portion of inserting paragraph before tube body in
It is equidistantly provided with 3-5 annular barb structure on section outer wall, by the way of press fitting, the setting number of annular barb structure can be reduced
Amount.
Description of the drawings
Fig. 1 is the structural schematic diagram of vinyon pipe fitting；
Fig. 2 is metal inner lining part；
Fig. 3 is metal jacket pipe；
Fig. 4 is product schematic diagram after assembly；
Fig. 5 is partial enlarged view at A in Fig. 4.
Wherein, 1- vinyons pipe fitting, 1.1- major diameter pipeline sections, 1.2- path pipeline sections, 2- metal inner lining parts, 2.1- tube bodies
Preceding inserting paragraph limits section, 2.3- tube body tail linkage sections, 3- metal jacket pipes, 4- annular barb structures, 5- first in 2.2- tube bodies
Annular seal groove, the first sealing rings of 6-, 7- electro-galvanized layers, 8- hot melt adhesive winding layers, 9-PEX thermal contraction casing tubes, 10- second are sealed
Circle, the second seal grooves of 11-.
Specific implementation mode
The embodiments of the present invention are further illustrated below in conjunction with the accompanying drawings.
Referring to Fig.1-5, a kind of heavy antisepsis combustion gas described in present embodiment moulds crossover sub, including polyethylene with steel
Plastic pipe 1, metal inner lining part 2, metal jacket pipe 3, annular barb structure 4, first annular seal groove 5, the first sealing ring 6,
Electro-galvanized layer 7, hot melt adhesive winding layer 8, PEX thermal contraction casing tubes 9, the second sealing ring 10 and the second seal groove 11, the polyethylene
Plastic pipe 1 includes the major diameter pipeline section 1.1 being wholely set and path pipeline section 1.2, and the internal diameter of major diameter pipeline section 1.1 is more than path pipeline section
The internal diameter of 1.2 internal diameter, the path pipeline section 1.2 is equal with the internal diameter of metal inner lining part 2, and metal inner lining part 2 is integrally formed
And the tube body that internal diameter is consistent comprising limit section 2.2 before the tube body being wholely set in inserting paragraph 2.1, tube body and connected with tube body tail
Section 2.3, in tube body the both ends of limit section 2.2 respectively with limit section 2.2 in inserting paragraph before tube body 2.1, tube body and connect, limited in tube body
The outer diameter of position section 2.2 is more than the outer diameter of inserting paragraph 2.1 before tube body, and inserting paragraph 2.1 is inserted into major diameter pipeline section 1.1 before tube body, and institute
The inner wall for stating the outer wall with the major diameter pipeline section 1.1 of inserting paragraph 2.1 before tube body is interference fitted, the right side of major diameter pipeline section 1.1 with
The left side that section 2.2 is limited in tube body offsets, and the outer diameter of major diameter pipeline section 1.1 is more than the outer diameter that section 2.2 is limited in tube body, before tube body
Equidistantly it is provided with multiple annular barb structures 4 on the leading portion and stage casing outer wall of inserting paragraph 2.1, the endpiece of inserting paragraph 2.1 before tube body
First annular seal groove 5 is offered on outer wall, and first sealing ring 6, second sealing ring 10 are housed in first annular seal groove 5
The inserting paragraph 2.1 before the tube body of 1.2 end face of path pipeline section of the vinyon pipe fitting 1 and the metal inner lining part 2 is set
The second seal groove 11 for being placed in the second sealing ring 10, small diameter tube are offered between end face, before tube body on 2.1 end face of inserting paragraph
Metal jacket pipe 3 is arranged in section 1.2, the outer wall that section 2.2, tube body tail linkage section 2.3 and metal jacket pipe 3 are limited in tube body is equal
With electro-galvanized layer 7.
The hot melt adhesive winding layer 8 includes Hot melt adhesive tape, the Hot melt adhesive tape winding ranging from major diameter pipeline section 1.1
Left side, the outer wall of metal jacket pipe 3, the left side of major diameter pipeline section 1.1, the outer wall, tube body tail of limit section 2.2 connect in tube body
The outer wall of section 2.3 is connect, PEX thermal contraction casing tubes 9 are sleeved on the outside for covering hot melt adhesive winding layer 8.
The Hot melt adhesive tape is polyethylene hot-melt adhesive band.
The polyethylene hot-melt adhesive band, is squeezed out by polyethylene bonding resin, including weight percent is 70%
HDPE, the LLDPE that weight percent is 20-25%, the maleic anhydride that weight percent is 1%-3.5%, weight percent are
0.1% peroxide cross-linking agent, the acetone that weight percent is 0.1%；Wherein, HDPE is high density polyethylene (HDPE), tensile strength
>=23Mpa or more, elongation at break >=600% or more, Vicat softening point >=120 DEG C or more, melt flow rate (MFR) 1g/10min with
On；LLDPE is linear low density polyethylene, fracture tensile strength >=10Mpa or more, elongation at break >=1000% or more, dimension card
Softening point >=95 DEG C or more, melt flow rate (MFR) 20g/10min or more.
The peroxide cross-linking agent is cumyl peroxide.
The outer diameter that section 2.2 is limited in the tube body is more than the outer diameter of tube body tail linkage section 2.3, and section 2.2 is limited in tube body
Left side be plane, the right side of limit section 2.2 is slope surface in tube body.
Before the tube body 3-5 annular barb structure 4 is equidistantly provided on the leading portion of inserting paragraph 2.1 and stage casing outer wall.
The major diameter pipeline section 1.1 is equal with the outer wall thickness of path pipeline section 1.2.
The vinyon pipe fitting 1 is produced using high-strength P20 pre-hardening materials matter mold injection.
The metal inner lining part 2 and metal jacket pipe 3 uses the seamless steel pipe that yield strength is not less than 235MPa
（45#）Processing.
The endoporus that inserting paragraph before tube body 2.1 is pressed into forcing press by the way of interference fit to major diameter pipeline section 1.1.
First sealing ring 6 and the second sealing ring 10 is butyronitrile sealing ring.
Circular portion is machined with 0.9 ° -1.1 ° tapers in the metal jacket pipe 3, and axial dimension is slightly less than matched
1.1 length of major diameter pipeline section.
Circular portion is interference fitted with 1.1 outer circle portion of major diameter pipeline section in the metal jacket pipe 3.
The manufacturing method of crossover sub is moulded in a kind of heavy antisepsis combustion gas with steel, is included the following steps：
1）Accessory prepares：Blanking is carried out to metal inner lining part 2, metal jacket pipe 3 using sawing machine, is selected for processing metal
Inner piece 2 and the seamless steel pipe of metal jacket pipe 3 one and seamless steel pipe two, sawing machine are intercepted to specific length size, prepare to be used for
Lathe finishes；Injection molding produces 1 blank of vinyon pipe fitting, places and is not less than 20 days under room temperature, to ensure blank dimension
It fully shrinks, eliminate internal stress in injection moulding process；
2）Accessory finishes：Seamless steel pipe one and two lathe of seamless steel pipe are finished；Using lathe to seamless steel pipe one
Metal inner lining part 2, the tube body that metal inner lining part 2 is integrally formed and internal diameter is consistent comprising be wholely set is made in turning
Section 2.2 and tube body tail linkage section 2.3 are limited before tube body in inserting paragraph 2.1, tube body, the outer diameter that section 2.2 is limited in tube body is more than pipe
The outer diameter of inserting paragraph 2.1 before body, while also utilizing lathe to first annular seal groove 5, the annular barb knot on metal inner lining part 2
Structure 4, the second seal groove 11 are processed, and first annular seal groove 5 is located at before tube body on the endpiece outer wall of inserting paragraph 2.1, and second
Seal groove 11 is located at before tube body on 2.1 end face of inserting paragraph；Using lathe to two turning of seamless steel pipe and inner circle, it is made outside metal
Casing 3, circular portion is machined with 0.9 ° -1.1 ° tapers in metal jacket pipe 3；The rounded ends in vinyon pipe fitting blank
It is machined with ramp down angle, vinyon pipe fitting 1 is made, it is convenient to be assembled with metal inner lining part 2；The above accessory, to ensure assembly essence
Degree, dimensioned tolerance should all control within ± 0.03mm；
3) it assembles：Butyronitrile sealing ring is placed in first annular seal groove 5, the second seal groove 11；By vinyon
Pipe fitting 1 and metal inner lining part 2 are respectively placed on hydraulic thrust machine, ensure two element coaxials, it is conllinear after, and be fixedly clamped, borrow
Help hydraulic thrust by vinyon pipe fitting 1 and the axial pushing of metal jacket pipe 3, until being limited at section 2.2 in tube body, to ensure
Circular portion tight interference fit and dimensional accuracy in 2 excircle part of metal inner lining part and matched vinyon pipe fitting 1
It is required that reach two kinds of Material Strengths of connection and sealing double effects, metal inner lining part 2 and vinyon pipe fitting after press fitting
1 inner circle size is almost the same, it is ensured that flow is not influenced by latus rectum variation in gas transmission process；By 3 inner circle of metal jacket pipe
The two is pushed, cooperation equally by hydraulic thrust machine, reaches tight interference by part and 1 excircle part of vinyon pipe fitting
Coordinate purpose；
4) metal inner lining part 2, metal jacket pipe 3 and the processing of 1 outer roll cover of vinyon pipe fitting：By electrogalvanizing anti-corrosion
Treated metal inner lining part 2, metal jacket pipe 3, surface cleaning processing, degrease, moisture, impurity, and 170 DEG C of progress-
190 DEG C of high temperature preheating, then by wide 40-50mm, the polyethylene hot-melt adhesive band of thick 0.5-0.8mm, according to spiral overlapping mode
Seamless winding is close, and purpose covers metal jacket pipe 3, metal inner lining part 2 comprehensively；Select tensile strength >=16MPa, resistance to ring
The border stress cracking time >=1000h, and the PEX thermal contraction casing tubes 9 of width are corresponded to, hot melt adhesive winding layer 8 will be pre-coated with
The metalwork divided covers comprehensively.
Using special flame gun, between ignition temperature controls 270-360 DEG C, opsition dependent successively to PEX thermal contraction casing tubes 9 outside
Heated on surface；To ensure PEX heat-shrinkable T bush outer surface because of the excessively high carbonization of temperature, needs to use short cycle, come repeatedly
The mode of the dynamic heating of flyback, local continuous stop heating time no more than 3s.Heat shrinking sleeve heat retraction fully after heating, tightly
Close holding is in the outside of hot melt adhesive, and the heat passed over by PEX heat shrinking sleeves further melts internal polyethylene heat
Melten gel makes the hot melt adhesive upper and lower surface of melting mould the abundant welding in crossover sub steel pipe end one with heat shrinking sleeve and steel respectively
It rises.
Above-mentioned processing, 1 inner surface of vinyon pipe fitting and 2 outer surface of metal inner lining part are by special thrust machine, by two
The close socket joint assembly of person, and be again sealed off by 3 inner surface of metal jacket pipe and 1 outer surface of vinyon pipe fitting, further
The above-mentioned accessory bonding strength that turns is promoted.Product is connected to the function that overall pressure-bearing is played in pipe-line system after above-mentioned processing.
The inner surface of annular barb structure 4 and the vinyon pipe fitting 11 for the deformation that is squeezed, which is formed, to be interference fitted, and is reached
The effect of connection and sealing.
First sealing ring 6, the second sealing ring 10 are squeezed between vinyon pipe fitting 1 and metal inner lining part 2 by the two
Swaging becomes, and reliable sealing function is played, to prevent the generation of Fluid leakage problems.
Metal inner lining part 2 and itself electrogalvanizing of 3 surface of metal jacket pipe, can play anti-corrosion effect.
8 uniform winding of hot melt adhesive winding layer outside metal inner lining part 2, outside metal jacket pipe 3, play reinforce anti-corrosion,
Secure bond different structure erosion resistant coating acts on.
PEX heat shrinking sleeves 9 are wrapped in the outside of hot melt adhesive winding layer 8, and pass through specific heating process, tighten in hot melt adhesive
Outside winding layer 8, key protection, antisepsis are played.
When in use, the left end of vinyon pipe fitting 1 is connected to modeling with polyethylene pipe by hot melt or electric smelting mode
The right end at pipe material end, metal inner lining part 2 is connect by welding with metallic conduit.
The polyethylene hot-melt adhesive band, is squeezed out by special polyethylene bonding resin, and material composition weight ratio is：HDPE
70%, LLDPE 20-25%%, maleic anhydride 1%-3.5%, peroxide cross-linking agent 0.1%, acetone 0.1%；Wherein, HDPE
For high density polyethylene (HDPE), tensile strength >=23Mpa or more, elongation at break >=600% or more, Vicat softening point >=120 DEG C with
Upper, melt flow rate (MFR) 1g/10min or more；LLDPE is linear low density polyethylene, fracture tensile strength >=10Mpa or more,
Elongation at break >=1000% or more, Vicat softening point >=95 DEG C or more, melt flow rate (MFR) 20g/10min or more.
The peroxide cross-linking agent is cumyl peroxide.
Specific embodiment of the utility model does not constitute limitations of the present invention, every phase using the utility model
It is within the protection scope of the present utility model like structure and variation.
Claims (6)
1. a kind of heavy antisepsis combustion gas moulds crossover sub, including vinyon pipe fitting with steel（1）, metal inner lining part（2）, outside metal
Casing（3）, annular barb structure（4）, first annular seal groove（5）, the first sealing ring（6）, electro-galvanized layer（7）, hot melt adhesive twines
Winding layer（8）, PEX thermal contraction casing tubes（9）, the second sealing ring（10）With the second seal groove（11）, it is characterised in that：The polyethylene
Plastic pipe（1）Including the major diameter pipeline section being wholely set（1.1）With path pipeline section（1.2）, major diameter pipeline section（1.1）Internal diameter be more than
Path pipeline section（1.2）Internal diameter, the path pipeline section（1.2）Internal diameter and metal inner lining part（2）Internal diameter it is equal, metal inner lining
Part（2）It is integrally formed and tube body that internal diameter is consistent comprising inserting paragraph before the tube body being wholely set（2.1）, limit in tube body
Section（2.2）With tube body tail linkage section（2.3）, section is limited in tube body（2.2）Both ends respectively with inserting paragraph before tube body（2.1）, pipe
Section is limited in body（2.2）It connects, section is limited in tube body（2.2）Outer diameter be more than tube body before inserting paragraph（2.1）Outer diameter, before tube body
Inserting paragraph（2.1）It is inserted into major diameter pipeline section（1.1）It is interior, and inserting paragraph before the tube body（2.1）Outer wall and the major diameter pipeline section
（1.1）Inner wall interference fit, major diameter pipeline section（1.1）Right side and tube body in limit section（2.2）Left side offset, major diameter
Pipeline section（1.1）Outer diameter be more than tube body in limit section（2.2）Outer diameter, inserting paragraph before tube body（2.1）Leading portion and stage casing outer wall
On be equidistantly provided with multiple annular barb structures（4）, inserting paragraph before tube body（2.1）Endpiece outer wall on offer it is first annular close
Sealing groove（5）, first annular seal groove（5）First sealing ring is inside housed（6）, second sealing ring（10）It is arranged in the poly- second
Alkene plastics pipe fitting（1）Path pipeline section（1.2）End face and the metal inner lining part（2）Tube body before inserting paragraph（2.1）End face it
Between, inserting paragraph before tube body（2.1）It is offered on end face for being placed in the second sealing ring（10）The second seal groove（11）, small diameter tube
Section（1.2）On be arranged with metal jacket pipe（3）, section is limited in tube body（2.2）, tube body tail linkage section（2.3）And metal jacket pipe
（3）Outer wall all have electro-galvanized layer（7）.
2. a kind of heavy antisepsis combustion gas as described in claim 1 moulds crossover sub with steel, it is characterised in that：The hot melt adhesive twines
Winding layer（8）Including Hot melt adhesive tape, the Hot melt adhesive tape winds the ranging from described major diameter pipeline section（1.1）Left side, metal-coating
Pipe（3）Outer wall, major diameter pipeline section（1.1）Left side, limit section in tube body（2.2）Outer wall, tube body tail linkage section（2.3）'s
Outer wall, PEX thermal contraction casing tubes（9）It is sleeved on and covers hot melt adhesive winding layer（8）Outside.
3. a kind of heavy antisepsis combustion gas as described in claim 1 moulds crossover sub with steel, it is characterised in that：It is inserted before the tube body
Enter section（2.1）Leading portion and stage casing outer wall on be equidistantly provided with 3-5 annular barb structure（4）.
4. a kind of heavy antisepsis combustion gas as described in claim 1 moulds crossover sub with steel, it is characterised in that：The major diameter pipeline section
（1.1）With path pipeline section（1.2）Outer wall thickness it is equal.
5. a kind of heavy antisepsis combustion gas as described in claim 1 moulds crossover sub with steel, it is characterised in that：By inserting paragraph before tube body
（2.1）With forcing press major diameter pipeline section is pressed by the way of interference fit（1.1）Endoporus.
6. a kind of heavy antisepsis combustion gas as described in claim 1 moulds crossover sub with steel, it is characterised in that：The metal-coating
Circular portion is machined with 0.9 ° -1.1 ° tapers in pipe 3, and axial dimension is slightly less than matched 1.1 length of major diameter pipeline section, described
Metal jacket pipe 3 in circular portion and 1.1 outer circle portion of major diameter pipeline section be interference fitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721780392.3U CN208058234U (en) | 2017-12-19 | 2017-12-19 | Heavy antisepsis combustion gas moulds crossover sub with steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721780392.3U CN208058234U (en) | 2017-12-19 | 2017-12-19 | Heavy antisepsis combustion gas moulds crossover sub with steel |
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| Publication Number | Publication Date |
|---|---|
| CN208058234U true CN208058234U (en) | 2018-11-06 |
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|---|---|---|---|
| CN201721780392.3U Active CN208058234U (en) | 2017-12-19 | 2017-12-19 | Heavy antisepsis combustion gas moulds crossover sub with steel |
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| CN (1) | CN208058234U (en) |
Cited By (4)
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| CN107956949A (en) * | 2017-12-19 | 2018-04-24 | 山东东宏管业股份有限公司 | Heavy antisepsis combustion gas moulds crossover sub and its manufacture method with steel |
| CN110048354A (en) * | 2019-04-15 | 2019-07-23 | 南通四建集团有限公司 | Encapsulating method for built-in metal pipe junction |
| CN110375140A (en) * | 2019-07-25 | 2019-10-25 | 山东东宏管业股份有限公司 | A kind of steel wire mesh frame polyethylene compound pipe connection structure and connection method and application |
| CN113108177A (en) * | 2021-04-06 | 2021-07-13 | 吴建方 | Traffic video monitoring equipment for installation and use in different scenes |
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|---|---|---|---|---|
| CN107956949A (en) * | 2017-12-19 | 2018-04-24 | 山东东宏管业股份有限公司 | Heavy antisepsis combustion gas moulds crossover sub and its manufacture method with steel |
| CN107956949B (en) * | 2017-12-19 | 2024-03-29 | 山东东宏管业股份有限公司 | Steel-plastic adapter for heavy-duty gas and manufacturing method thereof |
| CN110048354A (en) * | 2019-04-15 | 2019-07-23 | 南通四建集团有限公司 | Encapsulating method for built-in metal pipe junction |
| CN110375140A (en) * | 2019-07-25 | 2019-10-25 | 山东东宏管业股份有限公司 | A kind of steel wire mesh frame polyethylene compound pipe connection structure and connection method and application |
| CN110375140B (en) * | 2019-07-25 | 2022-04-01 | 山东东宏管业股份有限公司 | Connecting method of steel wire mesh framework polyethylene composite pipe |
| CN113108177A (en) * | 2021-04-06 | 2021-07-13 | 吴建方 | Traffic video monitoring equipment for installation and use in different scenes |
| CN113108177B (en) * | 2021-04-06 | 2022-12-27 | 吴建方 | Traffic video monitoring equipment for installation and use in different scenes |
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