CN115013602A - Electric melting pipe fitting for high-pressure composite pipeline and manufacturing method thereof - Google Patents
Electric melting pipe fitting for high-pressure composite pipeline and manufacturing method thereof Download PDFInfo
- Publication number
- CN115013602A CN115013602A CN202210653717.0A CN202210653717A CN115013602A CN 115013602 A CN115013602 A CN 115013602A CN 202210653717 A CN202210653717 A CN 202210653717A CN 115013602 A CN115013602 A CN 115013602A
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- layer
- pipe fitting
- pressure composite
- electric melting
- polyamide resin
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- 238000002844 melting Methods 0.000 title claims abstract description 35
- 230000008018 melting Effects 0.000 title claims abstract description 35
- 239000002131 composite material Substances 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 239000010410 layer Substances 0.000 claims abstract description 81
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 56
- 239000001257 hydrogen Substances 0.000 claims abstract description 56
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 52
- 229920006122 polyamide resin Polymers 0.000 claims abstract description 22
- 239000011241 protective layer Substances 0.000 claims abstract description 18
- 239000011342 resin composition Substances 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000003723 Smelting Methods 0.000 claims abstract description 12
- 125000003277 amino group Chemical group 0.000 claims abstract description 4
- 238000005485 electric heating Methods 0.000 claims abstract description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 4
- 150000002484 inorganic compounds Chemical class 0.000 claims abstract description 4
- 229910010272 inorganic material Inorganic materials 0.000 claims abstract description 4
- 150000002894 organic compounds Chemical class 0.000 claims abstract description 4
- 229910000792 Monel Inorganic materials 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910021389 graphene Inorganic materials 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 7
- 239000000956 alloy Substances 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- 239000004917 carbon fiber Substances 0.000 claims description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 7
- 238000001746 injection moulding Methods 0.000 claims description 6
- 238000001723 curing Methods 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 3
- 238000004528 spin coating Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- 239000012792 core layer Substances 0.000 claims 2
- 230000002787 reinforcement Effects 0.000 claims 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 239000003381 stabilizer Substances 0.000 claims 1
- 229920003169 water-soluble polymer Polymers 0.000 claims 1
- 230000005764 inhibitory process Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 150000002431 hydrogen Chemical class 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/001—Pipes; Pipe joints
-
- 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
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/02—Welded joints; Adhesive joints
- F16L47/03—Welded joints with an electrical resistance incorporated in the joint
-
- 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
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/02—Protection of pipes or objects of similar shape against external or internal damage or wear against cracking or buckling
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Branch Pipes, Bends, And The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The invention provides an electric melting pipe fitting for a high-pressure composite pipeline and a manufacturing method thereof, the electric melting pipe fitting for the high-pressure composite pipeline is sequentially provided with an inner layer, a hydrogen resistance layer, a core pipe layer and an outer protective layer from inside to outside, wherein the hydrogen resistance layer is made of a polyamide resin composition, and the hydrogen resistance performance of the electric melting pipe fitting is improved by the hydrogen resistance material polyamide resin composition; the polyamide resin composition contains: (A) polyamide resin: 100 parts by weight of (B) a particulate inorganic compound: 0.01-6 parts by weight of (C) an organic compound containing three or more hydroxyl groups or three or more amino groups in one molecule and having a number average molecular weight Mn of 2000 or less: 0.01-12 parts by weight; the inner layer and the outer protective layer are of an integrated structure; the inner side of the inner layer is provided with an electric heating wire which is positioned in the spiral groove at the inner side of the inner layer; the both ends of electric smelting pipe fitting are equipped with terminal wiring hole and observation hole respectively, and the wiring downthehole terminal that is equipped with is connected with the heating wire.
Description
Technical Field
The invention relates to the technical field of electric smelting pipe fittings, in particular to an electric smelting pipe fitting for a high-pressure composite pipeline and a manufacturing method thereof.
Background
The electric smelting pipe fitting is convenient to construct, reliable in connection and other excellent performances, and can be widely applied to gas and water supply pipe networks, but the molecular volume of hydrogen is smaller than that of other gas molecules, so the hydrogen leakage rate is higher than that of other gases, the hydrogen leakage risk can be caused when the electric smelting pipe fitting in the existing gas transmission field is used for connecting a hydrogen transmission pipeline, the existing composite pipeline is used for transmitting hydrogen in a starting stage, the number of the electric smelting pipe fittings for connecting the hydrogen transmission pipeline is small, the hydrogen leakage is avoided when the electric smelting pipe fitting in the existing gas transmission field transmits hydrogen, and the development of the electric smelting pipe fitting for the hydrogen transmission pipeline is necessary.
Disclosure of Invention
The invention overcomes the technical defect that hydrogen leakage can occur when the prior electric melting pipe fitting is connected with a hydrogen delivery pipeline, and provides a novel electric melting pipe fitting.
The PE100-RC disclosed by the patent is a cracking-resistant polyethylene material developed by Dadall, France.
In order to achieve the purpose, the invention provides an electric melting pipe fitting for a high-pressure composite pipeline and a manufacturing method thereof, and the specific technical scheme is as follows:
an electric melting pipe fitting for a high-pressure composite pipeline is sequentially provided with an inner layer, a hydrogen resistance layer, a core pipe layer and an outer protective layer from inside to outside, wherein the hydrogen resistance layer is made of a polyamide resin composition, and the hydrogen resistance performance of the electric melting pipe fitting is improved through the hydrogen resistance material polyamide resin composition; the polyamide resin composition contains: (A) polyamide resin: 100 parts by weight of (B) a particulate inorganic compound: 0.01-6 parts by weight of (C) an organic compound containing three or more hydroxyl groups or three or more amino groups in one molecule and having a number average molecular weight Mn of 2000 or less: 0.01-12 parts by weight; the inner layer and the outer protective layer are of an integrated structure; the inner side of the inner layer is provided with an electric heating wire which is positioned in the spiral groove at the inner side of the inner layer; the both ends of electric smelting pipe fitting are equipped with wiring hole and observation hole respectively, and the downthehole terminal that is equipped with of wiring is connected with the heating wire.
Further, in order to improve the hydrogen resistance of the electric melting pipe fitting, the graphene coating is coated on the inner surface of the core pipe layer, the graphene coating can effectively prevent hydrogen from leaking, double hydrogen resistance is realized with the polyamide resin composition, and the hydrogen resistance of the electric melting pipe fitting is greatly improved.
Furthermore, in order to prolong the service life of the safety performance of the electric melting pipe fitting, the core pipe layer is a Monel alloy insert, the Monel alloy has good hydrogen embrittlement resistance, and the hydrogen embrittlement phenomenon after the hydrogen inhibition layer fails when common metal is used for the electric melting pipe fitting is avoided by matching with double hydrogen inhibition.
Further, in order to improve the safety performance and the pressure bearing capacity of the electric melting pipe fitting, a reinforcing layer is further arranged between the core pipe layer and the outer protective layer, and the reinforcing layer is made of carbon fiber prepreg tape.
Further, in order to prolong the service life of the electric melting pipe fitting, the inner layer and the outer protective layer are preferably made of PE100-RC, and the PE100-RC material has excellent slow crack growth resistance.
Furthermore, in order to avoid hydrogen embrittlement of the heating wire, the heating wire is made of an oxygen-free copper wire.
In order to manufacture the electric melting pipe fitting for the high-pressure composite pipeline, the invention also provides a manufacturing method of the electric melting pipe fitting for the high-pressure composite pipeline, which comprises the following steps:
s1: preparing a graphene coating on the inner surface of the monel insert by a spin coating technology to form a core tube layer;
s2: winding the carbon fiber prepreg tape on the outer side of the core pipe layer to be heated, cured and molded to form a reinforcing layer;
s3: placing the assembly prepared in the step S2 into a mold, preheating, injecting the polyamide resin composition into the mold by using an injection molding machine, and curing to form a hydrogen barrier layer;
s4: preheating the assembly prepared in the step S3 in an oven, taking out the assembly and putting the assembly into another set of mold, and injecting PE100-RC into the mold by using an injection molding machine to form an inner layer, an outer protective layer, an observation hole and a wiring hole;
s5: carrying out state adjustment on the assembly prepared in the step S4 in a natural state, spirally cutting a groove on the inner surface of the inner layer of the assembly after the state adjustment is finished, embedding the rubber-coated anaerobic copper wire into the spiral groove, and fixing the rubber-coated anaerobic copper wire on the inner layer by heating with a heat gun;
s6: and checking the wiring of the assembly, and mounting binding posts in the wiring holes at the two ends after the wiring is qualified.
The electric melting pipe fitting for the high-pressure composite pipeline has the beneficial effects that: the material of the hydrogen-resistant layer is a polyamide resin composition, and the hydrogen-resistant performance of the electric melting pipe fitting is improved through the polyamide resin composition as the hydrogen-resistant material; the polyamide resin composition comprises: (A) polyamide resin: 100 parts by weight of (B) a particulate inorganic compound: 0.01-6 parts by weight of (C) an organic compound containing three or more hydroxyl groups or three or more amino groups in one molecule and having a number average molecular weight Mn of 2000 or less: 0.01-12 parts by weight; the graphene coating is coated on the inner surface of the core pipe layer, and can effectively prevent hydrogen from leaking, so that double hydrogen resistance is realized with the polyamide resin composition, and the hydrogen resistance of the electric melting pipe fitting is greatly improved; the core tube layer is a Monel alloy insert, the Monel alloy has good hydrogen embrittlement resistance, and the hydrogen embrittlement phenomenon after the hydrogen inhibition layer fails when the electric melting pipe fitting uses common metal is avoided by matching with double hydrogen inhibition; still be equipped with the enhancement layer between core pipe layer and the outer inoxidizing coating, the material of enhancement layer is carbon fiber preimpregnation yarn formula area, under the prerequisite of hydrogen resistance performance, rigidity and the bearing capacity of guaranteeing the pipeline, further reduces the manufacturing cost of electric smelting pipe fitting to the thickness demand of core pipe layer, has reduced the whole weight of electric smelting pipe fitting.
The manufacturing method of the electric melting pipe fitting for the high-pressure composite pipeline is provided on the basis of the composite pipeline, and the method is simple and feasible in steps and convenient to popularize and apply in a large scale.
Drawings
Fig. 1 is an isometric view of an electrofusion pipe fitting;
fig. 2 is an axial sectional view of the electrofused pipe fitting.
In the figure, 1, a hydrogen blocking layer, 2, a core tube layer, 3, a reinforcing layer, 41, an inner layer, 42, an outer protective layer, 43, a heating wire, 5, a wiring hole, 51, a wiring terminal and 6, a viewing hole are arranged.
Detailed Description
The following describes a specific embodiment of the present invention with reference to fig. 1 to 2.
The invention provides an electric melting pipe fitting for a high-pressure composite pipeline, as shown in figure 2, an inner layer 41, a hydrogen blocking layer 1, a core pipe layer 2, a reinforcing layer 3 and an outer protective layer 42 are sequentially arranged from inside to outside, the inner layer 41 and the outer protective layer 42 are of an integrated structure, the material of the inner layer 41 and the material of the outer protective layer 42 are preferably PE100-RC, the PE100-RC material has excellent slow crack growth resistance, and the service life of the electric melting pipe fitting can be obviously prolonged; the inner side of the inner layer 41 is provided with the heating wire 43, the heating wire 43 is positioned in the spiral groove on the inner side of the inner layer 41, and the heating wire 43 is made of an oxygen-free copper wire, so that hydrogen embrittlement of the heating wire 43 is avoided; the material of the hydrogen-resistant layer 1 is a polyamide resin composition, the inner surface of the core pipe layer 2 is coated with the graphene coating, the graphene coating can effectively prevent hydrogen from leaking, double hydrogen resistance is realized with the polyamide resin composition, and the hydrogen resistance of the electric melting pipe fitting is greatly improved; the core tube layer 2 is a Monel alloy insert, the Monel alloy has good hydrogen embrittlement resistance, and the hydrogen embrittlement phenomenon after the hydrogen inhibition layer 1 fails when common metal is used for the electric melting pipe fitting is avoided by matching with double hydrogen inhibition; the reinforcing layer 3 is arranged between the core pipe layer 2 and the outer protective layer 42, the reinforcing layer 3 is made of carbon fiber prepreg yarn type tape, the thickness requirement on the core pipe layer is further reduced on the premise of ensuring the hydrogen resistance performance of the pipeline, the production cost of the electric melting pipe fitting is reduced, and the overall weight of the electric melting pipe fitting is reduced; as shown in fig. 1 and fig. 2, two ends of the electrofusion pipe fitting are respectively provided with a wiring post hole 5 and an observation hole 6, a wiring post 51 is arranged in the wiring hole 5, the wiring post 51 is connected with the heating wire 43, and the observation hole 6 is used for observing the welding quality and state of the electrofusion pipe fitting.
In order to manufacture the electric melting pipe fitting for the high-pressure composite pipeline, the invention also provides a manufacturing method of the electric melting pipe fitting for the high-pressure composite pipeline, which comprises the following steps:
s1: preparing a graphene coating on the inner surface of the monel insert by a spin coating technology to form a core tube layer 2;
s2: winding the carbon fiber prepreg tape on the outer side of the core pipe layer 2 for heating, curing and molding to form a reinforcing layer 3;
s3: placing the assembly prepared in the step S2 into a mold, preheating, injecting the polyamide resin composition into the mold by using an injection molding machine, and curing to form a hydrogen barrier layer 1;
s4: preheating the assembly prepared in the step S3 in an oven, taking out the assembly and putting the assembly into another set of mold, and injecting PE100-RC into the mold by using an injection molding machine to form an inner layer 41, an outer protective layer 42, an observation hole 5 and a wiring hole 5;
s5: adjusting the state of the assembly prepared in the step S4 in a natural state, spirally cutting a groove on the inner surface of the inner layer 41 of the assembly after the state adjustment is finished, embedding the glue-coated anaerobic copper wire into the spiral groove, and fixing the glue-coated anaerobic copper wire on the inner layer 41 by heating with a heat gun;
s6: and checking the wiring of the assembly, and installing the binding posts 51 in the wiring holes 5 at the two ends after the wiring is checked to be qualified.
The method has simple and feasible steps and is convenient for large-scale popularization and application.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (7)
1. An electric melting pipe fitting for a high-pressure composite pipeline is characterized in that an inner layer (41), a hydrogen-resistant layer (1), a core pipe layer (2) and an outer protective layer (42) are sequentially arranged from inside to outside,
wherein the material of the hydrogen-resistant layer (1) is a polyamide resin composition;
the polyamide resin composition contains:
(A) polyamide resin: 100 parts by weight of a water-soluble polymer,
(B) particulate inorganic compound: 0.01 to 6 parts by weight of a stabilizer,
(C) an organic compound which contains three or more hydroxyl groups or three or more amino groups in one molecule and has a number average molecular weight Mn of 2000 or less: 0.01-12 parts by weight;
the inner layer (41) and the outer protective layer (42) are of an integrated structure;
an electric heating wire (43) is arranged on the inner side of the inner layer (41), and the electric heating wire (43) is positioned in the spiral groove on the inner side of the inner layer (41);
the both ends of electric smelting pipe fitting are equipped with wiring hole (5) and observation hole (6) respectively, are equipped with terminal (51) in wiring hole (5), terminal (51) with heating wire (43) are connected.
2. An electrofusion tube unit for a high pressure composite pipe according to claim 1, characterised in that the inner surface of the core layer (2) is coated with a graphene coating.
3. An electrofusion tube unit for a high pressure composite conduit according to claim 2, characterised in that the core layer (2) is a monel insert.
4. The electric melting pipe fitting for the high-pressure composite pipeline according to claim 1, wherein a reinforcement layer (3) is further arranged between the core pipe layer (2) and the outer protective layer (42), and the reinforcement layer (3) is made of a carbon fiber prepreg tape.
5. Electric melting pipe fitting for high-pressure composite pipes according to claim 1, characterized in that the material of the inner layer (41) and the outer protective layer (42) is preferably PE 100-RC.
6. The electrofusion tube unit for a high pressure composite conduit according to claim 1 characterised in that the heating wire (43) is made of an oxygen free copper wire.
7. A manufacturing method of an electric melting pipe fitting for a high-pressure composite pipeline is characterized by comprising the following steps:
s1: preparing a graphene coating on the inner surface of the Monel alloy insert by a spin coating technology to form a core tube layer (2);
s2: winding the carbon fiber prepreg tape on the outer side of the core pipe layer (2) for heating, curing and molding to form a reinforcing layer (3);
s3: placing the assembly prepared in the step S2 into a mold, preheating, injecting the polyamide resin composition into the mold by using an injection molding machine, and curing to form a hydrogen barrier layer (1);
s4: preheating the assembly prepared in the step S3 in an oven, taking out the assembly and putting the assembly into another set of mold, and injecting PE100-RC into the mold by using an injection molding machine to form an inner layer (41), an outer protective layer (42), an observation hole (6) and a wiring hole (5);
s5: carrying out state adjustment on the assembly prepared in the step S4 in a natural state, spirally grooving the inner surface of the inner layer (41) of the assembly after the state adjustment is finished, embedding the glue-coated oxygen-free copper wire into the spiral groove, and fixing the glue-coated oxygen-free copper wire on the inner layer (41) by heating with a hot air gun;
s6: and checking the wiring of the assembly, and mounting binding posts (51) in the wiring holes (5) at the two ends after the wiring is checked to be qualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210653717.0A CN115013602A (en) | 2022-06-10 | 2022-06-10 | Electric melting pipe fitting for high-pressure composite pipeline and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210653717.0A CN115013602A (en) | 2022-06-10 | 2022-06-10 | Electric melting pipe fitting for high-pressure composite pipeline and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115013602A true CN115013602A (en) | 2022-09-06 |
Family
ID=83073197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210653717.0A Pending CN115013602A (en) | 2022-06-10 | 2022-06-10 | Electric melting pipe fitting for high-pressure composite pipeline and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115013602A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010029715A1 (en) * | 2010-06-04 | 2011-12-08 | Daku Kunststoff Gmbh | Sleeve i.e. welded sleeve, for welding plastic or plastic composite pipes, has wall heated by heating elements, and plug-in grooves receiving ends of respective pipes, where heating elements are arranged in region of plug-in grooves |
| CN203082439U (en) * | 2013-01-23 | 2013-07-24 | 郁巨华 | Enhancement type electric melting pipe fitting |
| CN103847106A (en) * | 2014-01-02 | 2014-06-11 | 天津耀德环保科技有限公司 | High-performance fiber reinforced polyethylene composite pipe and preparation method thereof |
| CN107289220A (en) * | 2016-03-30 | 2017-10-24 | 青海柴达木杰青科技有限公司 | A kind of enhanced composite electric melting sleeve and preparation method thereof |
| CN109058637A (en) * | 2018-09-21 | 2018-12-21 | 江特科技股份有限公司 | Cloth wire form electric melting pipe fittings after a kind of |
| CN209084191U (en) * | 2018-09-13 | 2019-07-09 | 贵州省源单新材料科技有限公司 | A kind of MULTILAYER COMPOSITE electric melting pipe fittings |
| CN110511560A (en) * | 2018-05-21 | 2019-11-29 | 东丽先端材料研究开发（中国）有限公司 | A kind of hydrogen gas storage vessel with or hydrogen line Amilan polyamide resin composition |
| CN111219559A (en) * | 2019-10-29 | 2020-06-02 | 浙江庆发管业科技有限公司 | PE composite electric melting pipe fitting for high-pressure oil and gas pipeline and manufacturing method thereof |
| CN211344388U (en) * | 2019-12-31 | 2020-08-25 | 四川金元管业有限公司 | Plastic electric melting equal-diameter direct pipe fitting with screen framework reinforced polyethylene composite structure |
| CN213361481U (en) * | 2020-09-07 | 2021-06-04 | 临海伟星新型建材有限公司 | Composite electric melting pipe fitting |
| CN113464752A (en) * | 2021-07-02 | 2021-10-01 | 安徽杰蓝特新材料有限公司 | Extrusion type RTP electric melting pipe fitting and processing technology thereof |
| CN214534882U (en) * | 2021-01-04 | 2021-10-29 | 广东联塑科技实业有限公司 | Multilayer hinders oxygen PE-RT pipe fitting |
-
2022
- 2022-06-10 CN CN202210653717.0A patent/CN115013602A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010029715A1 (en) * | 2010-06-04 | 2011-12-08 | Daku Kunststoff Gmbh | Sleeve i.e. welded sleeve, for welding plastic or plastic composite pipes, has wall heated by heating elements, and plug-in grooves receiving ends of respective pipes, where heating elements are arranged in region of plug-in grooves |
| CN203082439U (en) * | 2013-01-23 | 2013-07-24 | 郁巨华 | Enhancement type electric melting pipe fitting |
| CN103847106A (en) * | 2014-01-02 | 2014-06-11 | 天津耀德环保科技有限公司 | High-performance fiber reinforced polyethylene composite pipe and preparation method thereof |
| CN107289220A (en) * | 2016-03-30 | 2017-10-24 | 青海柴达木杰青科技有限公司 | A kind of enhanced composite electric melting sleeve and preparation method thereof |
| CN110511560A (en) * | 2018-05-21 | 2019-11-29 | 东丽先端材料研究开发（中国）有限公司 | A kind of hydrogen gas storage vessel with or hydrogen line Amilan polyamide resin composition |
| CN209084191U (en) * | 2018-09-13 | 2019-07-09 | 贵州省源单新材料科技有限公司 | A kind of MULTILAYER COMPOSITE electric melting pipe fittings |
| CN109058637A (en) * | 2018-09-21 | 2018-12-21 | 江特科技股份有限公司 | Cloth wire form electric melting pipe fittings after a kind of |
| CN111219559A (en) * | 2019-10-29 | 2020-06-02 | 浙江庆发管业科技有限公司 | PE composite electric melting pipe fitting for high-pressure oil and gas pipeline and manufacturing method thereof |
| CN211344388U (en) * | 2019-12-31 | 2020-08-25 | 四川金元管业有限公司 | Plastic electric melting equal-diameter direct pipe fitting with screen framework reinforced polyethylene composite structure |
| CN213361481U (en) * | 2020-09-07 | 2021-06-04 | 临海伟星新型建材有限公司 | Composite electric melting pipe fitting |
| CN214534882U (en) * | 2021-01-04 | 2021-10-29 | 广东联塑科技实业有限公司 | Multilayer hinders oxygen PE-RT pipe fitting |
| CN113464752A (en) * | 2021-07-02 | 2021-10-01 | 安徽杰蓝特新材料有限公司 | Extrusion type RTP electric melting pipe fitting and processing technology thereof |
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