CN222102998U - A pipeline for transmitting hydrochloric acid - Google Patents
A pipeline for transmitting hydrochloric acid Download PDFInfo
- Publication number
- CN222102998U CN222102998U CN202420101609.7U CN202420101609U CN222102998U CN 222102998 U CN222102998 U CN 222102998U CN 202420101609 U CN202420101609 U CN 202420101609U CN 222102998 U CN222102998 U CN 222102998U
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- Prior art keywords
- glass fiber
- fiber composite
- heat insulation
- epoxy glass
- aluminum foil
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- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 239000003365 glass fiber Substances 0.000 claims abstract description 56
- 239000002131 composite material Substances 0.000 claims abstract description 42
- 239000004593 Epoxy Substances 0.000 claims abstract description 41
- 239000011248 coating agent Substances 0.000 claims abstract description 34
- 238000000576 coating method Methods 0.000 claims abstract description 34
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 25
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 25
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 25
- 238000009413 insulation Methods 0.000 claims description 36
- 229910052782 aluminium Inorganic materials 0.000 claims description 33
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 33
- 239000011888 foil Substances 0.000 claims description 33
- 238000005524 ceramic coating Methods 0.000 claims description 19
- 239000004568 cement Substances 0.000 claims description 10
- 230000008439 repair process Effects 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 8
- 239000004744 fabric Substances 0.000 claims description 7
- 239000003822 epoxy resin Substances 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 239000002114 nanocomposite Substances 0.000 claims description 4
- 239000002086 nanomaterial Substances 0.000 claims description 3
- 238000006068 polycondensation reaction Methods 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 2
- 239000002253 acid Substances 0.000 abstract description 6
- 239000003513 alkali Substances 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 4
- 229920000642 polymer Polymers 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000007774 longterm Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 23
- 230000007797 corrosion Effects 0.000 description 12
- 238000005260 corrosion Methods 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 5
- 229920013716 polyethylene resin Polymers 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 239000013043 chemical agent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011185 multilayer composite material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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- Laminated Bodies (AREA)
Abstract
本实用新型公开了一种传输盐酸的管道，涉及管道技术领域。包括环氧玻纤复合管，所述环氧玻纤复合管内层设置有聚四氟乙烯涂层，环氧玻纤复合管与聚四氟乙烯涂层之间通过隔热层相连接。本实用新型采用环氧玻纤复合材料为主体的多层复合材料管道代替现有的高分子管道、金属管道作为化工能源企业的盐酸输送管道，利用环氧玻纤复合材料自身的耐酸碱性能、同体积下的轻质量和自身高强度性能，可以有利于输送管道的长久使用和提高生产安全性能以及降低企业的运行维护成本，并且通过隔热层的设置，避免了环氧玻纤复合材料产生的弊端。
The utility model discloses a pipeline for transmitting hydrochloric acid, and relates to the technical field of pipelines. It comprises an epoxy glass fiber composite pipe, the inner layer of which is provided with a polytetrafluoroethylene coating, and the epoxy glass fiber composite pipe and the polytetrafluoroethylene coating are connected via a heat insulating layer. The utility model adopts a multi-layer composite pipe with epoxy glass fiber composite material as the main body to replace the existing polymer pipe and metal pipe as the hydrochloric acid delivery pipe of the chemical energy enterprise, and utilizes the acid and alkali resistance, light weight under the same volume and high strength performance of the epoxy glass fiber composite material itself, which can be beneficial to the long-term use of the delivery pipe, improve the production safety performance and reduce the operation and maintenance costs of the enterprise, and avoids the disadvantages of the epoxy glass fiber composite material by setting the heat insulating layer.
Description
Technical Field
The utility model relates to the technical field of pipelines, in particular to a pipeline for conveying hydrochloric acid.
Background
The corrosion resistance of the polymer type pipeline is better, but the rigidity and the strength of the polymer type pipeline are insufficient, the aim of improving the strength is achieved by increasing the wall thickness of the pipeline, so that the weight of the pipeline can be increased, the installation cost is inconvenient to mount and increase, after the metal pipeline with the inner sprayed corrosion-resistant coating is flushed and separated for a long time through liquid, the acid or alkaline liquid can be caused to contact with the metal pipeline to generate electrochemical corrosion to generate corrosion leakage points, potential safety hazards are formed, and the preparation of the novel acid and alkali-resistant composite material pipeline with the rigidity strength is particularly critical from the angles of economic applicability and industrial safety.
The invention discloses a high-strength corrosion-resistant pipeline with the application number 201410691954.1, which comprises a polyethylene resin inner layer, a high-strength steel pipe layer and a polyethylene resin outer layer, wherein the polyethylene resin inner layer is attached to the inner wall of the high-strength steel pipe layer, the polyethylene resin outer layer is attached to the outer wall of the high-strength steel pipe layer, the inner wall of the high-strength steel pipe layer is enclosed into a circular structure, and the inner wall of the high-strength steel pipe layer is enclosed into an elliptical structure.
The pipeline achieves a certain corrosion resistance effect through polyethylene resin, but once the temperature is higher, resin is easy to melt, the shape of the pipeline is special, the self weight is increased, the installation is troublesome, and aiming at the situation, the utility model provides a novel solution for solving the problems of long corrosion resistance and self weight reduction of the pipeline when the pipeline in the current chemical energy industry transports hydrochloric acid.
Disclosure of utility model
The present utility model is directed to a hydrochloric acid transmission pipeline, so as to solve the above-mentioned problems in the prior art.
The utility model provides a pipeline for transmitting hydrochloric acid, which comprises an epoxy glass fiber composite pipe, wherein a polytetrafluoroethylene coating is arranged on the inner layer of the epoxy glass fiber composite pipe, and the epoxy glass fiber composite pipe is connected with the polytetrafluoroethylene coating through a heat insulation layer;
The heat insulation layer is internally provided with a heat insulation aluminum foil which is spirally arranged inside the epoxy glass fiber composite tube to increase deformation force, one side of the heat insulation aluminum foil is bonded with carbon fiber wires through resin to increase strength, and the inner wall of the epoxy glass fiber composite tube is pressed into a net shape to increase coupling with the heat insulation aluminum foil.
Preferably, the epoxy glass fiber composite tube is formed by curing glass fiber cloth and epoxy resin, the thickness of the epoxy glass fiber composite tube is 3 mm-8 mm, and the thickness of the polytetrafluoroethylene coating is 0.2 mm-0.5 mm.
Preferably, the heat insulation layer comprises an inorganic nano ceramic coating and a heat insulation aluminum foil, wherein the inorganic nano ceramic coating is coated on the inner side of the epoxy glass fiber composite tube, and the heat insulation aluminum foil is positioned between the inorganic nano ceramic coating and the heat insulation aluminum foil.
Preferably, the thickness of the heat-insulating aluminum foil is 0.1 mm-0.2 mm, and the heat-insulating aluminum foil is connected with the inorganic nano ceramic coating and the polytetrafluoroethylene coating through high-temperature-resistant repair cement.
Preferably, the high-temperature-resistant repair cement is a high-temperature-resistant inorganic nanocomposite binder prepared by polycondensation reaction of inorganic nano materials, and the coating thickness is not more than 0.2mm.
Preferably, the overall thickness of the epoxy glass fiber composite tube, the polytetrafluoroethylene coating, the inorganic nano ceramic coating and the heat insulation aluminum foil is not more than 15mm.
Compared with the prior art, the utility model has the beneficial effects that:
This pipeline of transmission hydrochloric acid is through adopting epoxy glass fiber combined material to replace current polymer pipeline, metal pipeline as the hydrochloric acid pipeline of chemical energy enterprise as the multilayer combined material pipeline of main part, utilize the acid and alkali resistance of epoxy glass fiber combined material self, light quality under the same volume and self high strength performance, can be favorable to the long-term use of pipeline and improve production security performance and reduce the operation maintenance cost of enterprise, and through the setting of insulating layer, the drawback that epoxy glass fiber combined material produced has been avoided, increase the practicality of pipeline, under the same condition, installation cost does not increase.
Drawings
FIG. 1 is a schematic diagram of a hydrochloric acid transporting pipeline structure according to the present utility model;
FIG. 2 is a schematic side view of the heat-insulating aluminum foil of the present utility model;
FIG. 3 is a schematic diagram of a flattened structure of the heat-insulating aluminum foil of the present utility model;
Fig. 4 is a schematic side view of a hydrochloric acid conveying pipeline according to the present utility model.
In the figure, 1, an epoxy glass fiber composite pipe, 2, a polytetrafluoroethylene coating, 3, an inorganic nano ceramic coating, 4, a heat insulation aluminum foil and 5, a carbon fiber wire.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model provides a lightweight corrosion-resistant multi-layer composite material pipeline transportation hydrochloric acid. According to the technical scheme, the epoxy glass fiber composite material is adopted as a pipeline main body, the inner layer is sprayed with the polytetrafluoroethylene coating 2 to serve as coating protection, as shown in fig. 1 and fig. 2, the polytetrafluoroethylene coating 2 is the inner layer, and the epoxy glass fiber composite pipe 1 is provided.
As shown in figures 1-2, the utility model provides a technical scheme that the hydrochloric acid transmission pipeline comprises an epoxy glass fiber composite pipe 1, wherein a polytetrafluoroethylene coating 2 is arranged on the inner layer of the epoxy glass fiber composite pipe 1, the epoxy glass fiber composite pipe 1 is connected with the polytetrafluoroethylene coating 2 through a heat insulation layer, a heat insulation aluminum foil 4 is arranged in the heat insulation layer in a spiral manner, the heat insulation aluminum foil 4 is arranged in the epoxy glass fiber composite pipe 1 to increase deformation force, one side of the heat insulation aluminum foil 4 is bonded with carbon fiber 5 through resin to increase strength, the inner wall of the epoxy glass fiber composite pipe 1 is pressed into a net shape to be coupled with the heat insulation aluminum foil 4, and the outer pipeline is made of an epoxy glass fiber composite material. In addition, the glass fiber is used as an internal supporting framework of the pipeline, so that the weight of the whole pipeline can be greatly reduced on the basis of improving the same mechanical strength of the whole pipeline. The weight of the composite material pipeline only occupies about 1/4 of that of the ductile cast iron pipe with the same specification and the same length, 1/10 of that of the cement pipeline, and the like, and has the advantages of light weight, high strength, acid corrosion resistance and the like.
The polytetrafluoroethylene coating sprayed on the inner layer of the pipeline can not only add a protective layer for the pipeline by virtue of the acid and alkali resistance of the polytetrafluoroethylene coating, so that the occurrence of hydrochloric acid liquid leakage points is reduced, but also the inner wall of the pipeline can be kept clean for a long time due to the low friction coefficient of the polytetrafluoroethylene coating, so that the flow resistance is reduced, the liquid flow velocity is improved, and the aim of reducing the energy consumption is achieved.
In order to ensure the smooth implementation of this embodiment, it should be understood that the epoxy glass fiber composite tube 1 is formed by curing glass fiber cloth and epoxy resin, the thickness of the epoxy glass fiber composite tube 1 is 3 mm-8 mm, and the thickness of the polytetrafluoroethylene coating 2 is 0.2 mm-0.5 mm.
In order to ensure smooth implementation of the embodiment, it is to be understood that the heat insulation layer comprises an inorganic nano ceramic coating 3 and a heat insulation aluminum foil 4, the inorganic nano ceramic coating 3 is coated on the inner side of the epoxy glass fiber composite tube 1, the heat insulation aluminum foil 4 is positioned between the inorganic nano ceramic coating 3 and the heat insulation aluminum foil 4, because the glass fiber has better corrosion resistance and ageing resistance, but some chemical agents are often added in the production and processing process of the glass fiber tube, the chemical agents can reduce the service life of the glass fiber tube, compared with other tubes, the high temperature resistance of the glass fiber tube is poorer, although the glass fiber can resist high temperature, the epoxy resin in the glass fiber tube can be decomposed at higher temperature, so that the tubes lose strength and rigidity, therefore, special attention is required when the glass fiber tube is used in a high temperature environment, the temperature resistance limit is not suitable to be exceeded, and the inorganic nano ceramic coating has excellent high temperature resistance, and can work in a high temperature environment due to the special property of inorganic components, and can not generate color change or deform, so that the coating can be widely applied to the high temperature equipment and the fields of industry and provide additional heat insulation effects;
And the inorganic nano ceramic coating has excellent wear resistance and corrosion resistance. The particles have high hardness and chemical inertness, and can effectively prevent the damage of external factors to the surface of the material. This allows the paint to maintain good performance for a long period of time under harsh environmental conditions, extending the useful life of the material.
To ensure the smooth implementation of this embodiment, it should be understood that the thickness of the heat-insulating aluminum foil 4 is 0.1 mm-0.2 mm, and the heat-insulating aluminum foil 4 is connected with the inorganic nano ceramic coating 3 and the polytetrafluoroethylene coating 2 through high-temperature-resistant repair cement.
In order to ensure the smooth implementation of the embodiment, it is to be understood that the high-temperature-resistant repair cement is a high-temperature-resistant inorganic nano composite adhesive prepared by using inorganic nano materials through polycondensation reaction, and the high-temperature-resistant inorganic nano composite adhesive is a suspension dispersion system with neutral pH value through screening of component proportion and preparation process parameters, so that the adhesive has strong adhesive force, no corrosiveness to a resin matrix, wide application temperature range of the high-temperature-resistant repair cement, good adhesive property, wear resistance and corrosion resistance at high temperature of 2200 ℃, long service life and coating thickness of not more than 0.2mm.
In order to ensure the smooth implementation of this embodiment, it should be understood that the overall thickness of the epoxy glass fiber composite tube 1, the polytetrafluoroethylene coating 2, the inorganic nano ceramic coating 3 and the heat insulation aluminum foil 4 is not more than 15mm.
The preparation process of the pipeline for conveying hydrochloric acid comprises the following steps:
1. And designing a corresponding steel mould for the inner cavity of the pipeline according to the pipeline size.
2. And selecting glass fiber plain cloth and epoxy resin curable at room temperature, and brushing a release agent on the surface of the steel mold, so that the later-stage pipeline demolding is facilitated.
3. Winding the glass fiber plain cloth which is cured at room temperature on the surface of a die, slowly compacting and exhausting by using a tube coiling machine, winding resin-containing glass fiber cloth with corresponding layers according to the wall thickness (3-8 mm), winding a thermoplastic belt on the outer side to wrap the resin-containing glass fiber cloth, uniformly distributing the epoxy resin, and placing the resin in the room temperature environment for more than 12 hours until the resin is completely cured.
4. And demolding the cured epoxy glass fiber composite material pipeline from the mold, cleaning burrs and cutting, spraying an inorganic nano ceramic coating by adopting a spraying process, then coating high-temperature-resistant repair cement to adhere to the heat-insulating aluminum foil 4, and coating the high-temperature-resistant repair cement on the other surface of the heat-insulating aluminum foil 4.
5. A polytetrafluoroethylene coating (the thickness of the coating is 0.2-0.5 mm) is uniformly sprayed on the inner side of the pipeline by adopting a wet process, so that the polytetrafluoroethylene coating is effectively combined with the heat insulation layer and the epoxy glass fiber composite pipe 1 to form a corrosion-resistant composite material pipeline capable of conveying hydrochloric acid.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made hereto without departing from the spirit and scope of the utility model as defined by the appended embodiments and equivalents thereof.
Claims (6)
1. The hydrochloric acid transmission pipeline comprises an epoxy glass fiber composite pipe (1) and is characterized in that a polytetrafluoroethylene coating (2) is arranged on the inner layer of the epoxy glass fiber composite pipe (1), and the epoxy glass fiber composite pipe (1) is connected with the polytetrafluoroethylene coating (2) through a heat insulation layer;
The heat insulation layer is internally provided with a heat insulation aluminum foil (4), the heat insulation aluminum foil (4) is spirally arranged inside the epoxy glass fiber composite tube (1) to increase deformation force, and one side of the heat insulation aluminum foil (4) is bonded with carbon fiber filaments (5) through resin to increase strength;
The inner wall of the epoxy glass fiber composite pipe (1) is pressed into a net shape so as to be coupled with the heat insulation aluminum foil (4).
2. The hydrochloric acid transmission pipeline as set forth in claim 1, wherein the epoxy glass fiber composite pipe (1) is formed by curing glass fiber cloth and epoxy resin, the thickness of the epoxy glass fiber composite pipe (1) is 3 mm-8 mm, and the thickness of the polytetrafluoroethylene coating (2) is 0.2 mm-0.5 mm.
3. The hydrochloric acid transmission pipeline as set forth in claim 1, wherein the heat insulation layer comprises an inorganic nano ceramic coating (3), the inorganic nano ceramic coating (3) is coated on the inner side of the epoxy glass fiber composite pipe (1), and the heat insulation aluminum foil (4) is located between the inorganic nano ceramic coating (3) and the heat insulation aluminum foil (4).
4. A hydrochloric acid transmission pipeline according to claim 3, wherein the thickness of the heat insulation aluminum foil (4) is 0.1 mm-0.2 mm, and the heat insulation aluminum foil (4) is connected with the inorganic nano ceramic coating (3) and the polytetrafluoroethylene coating (2) through high temperature resistant repair cement.
5. The hydrochloric acid transporting pipe as set forth in claim 4, wherein said high temperature resistant repair cement is a high temperature resistant inorganic nanocomposite binder prepared by polycondensation reaction using inorganic nanomaterial, and has a coating thickness of not more than 0.2mm.
6. The hydrochloric acid transmission pipeline according to claim 1, wherein the overall thickness of the epoxy glass fiber composite pipe (1), the polytetrafluoroethylene coating (2), the inorganic nano ceramic coating (3) and the heat insulation aluminum foil (4) is not more than 15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420101609.7U CN222102998U (en) | 2024-01-16 | 2024-01-16 | A pipeline for transmitting hydrochloric acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420101609.7U CN222102998U (en) | 2024-01-16 | 2024-01-16 | A pipeline for transmitting hydrochloric acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222102998U true CN222102998U (en) | 2024-12-03 |
Family
ID=93628147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420101609.7U Active CN222102998U (en) | 2024-01-16 | 2024-01-16 | A pipeline for transmitting hydrochloric acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222102998U (en) |
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2024
- 2024-01-16 CN CN202420101609.7U patent/CN222102998U/en active Active
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