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RU2009129767A - METHOD FOR APPLYING THERMOPLASTIC COATINGS ON THE INTERNAL SURFACE OF METAL PIPES AND A DEVICE FOR ITS IMPLEMENTATION - Google Patents

METHOD FOR APPLYING THERMOPLASTIC COATINGS ON THE INTERNAL SURFACE OF METAL PIPES AND A DEVICE FOR ITS IMPLEMENTATION Download PDF

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Publication number
RU2009129767A
RU2009129767A RU2009129767/05A RU2009129767A RU2009129767A RU 2009129767 A RU2009129767 A RU 2009129767A RU 2009129767/05 A RU2009129767/05 A RU 2009129767/05A RU 2009129767 A RU2009129767 A RU 2009129767A RU 2009129767 A RU2009129767 A RU 2009129767A
Authority
RU
Russia
Prior art keywords
feed channel
thermoplastic
distribution head
nozzle
rod
Prior art date
Application number
RU2009129767/05A
Other languages
Russian (ru)
Other versions
RU2417884C2 (en
Inventor
Фирдаус Усманович Замалеев (RU)
Фирдаус Усманович Замалеев
Малик Фавзавиевич Гайсин (RU)
Малик Фавзавиевич Гайсин
Александр Николаевич Пилюгин (RU)
Александр Николаевич Пилюгин
Original Assignee
Фирдаус Усманович Замалеев (RU)
Фирдаус Усманович Замалеев
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Фирдаус Усманович Замалеев (RU), Фирдаус Усманович Замалеев filed Critical Фирдаус Усманович Замалеев (RU)
Priority to RU2009129767/05A priority Critical patent/RU2417884C2/en
Priority to PCT/RU2010/000228 priority patent/WO2011016750A1/en
Priority to PCT/IB2010/001921 priority patent/WO2011015933A2/en
Publication of RU2009129767A publication Critical patent/RU2009129767A/en
Application granted granted Critical
Publication of RU2417884C2 publication Critical patent/RU2417884C2/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C7/00—Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work
    • B05C7/06—Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work by devices moving in contact with the work
    • B05C7/08—Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work by devices moving in contact with the work for applying liquids or other fluent materials to the inside of tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/021—Apparatus for spreading or distributing liquids or other fluent materials already applied to the surface of an elongated body, e.g. a wire, a tube
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C7/00—Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work
    • B05C7/005—Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work by devices in contact with moving work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/26—Processes for applying liquids or other fluent materials performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
    • B05D1/265—Extrusion coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0218—Pretreatment, e.g. heating the substrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
    • B05D7/222—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes of pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/151—Coating hollow articles
    • B29C48/152—Coating hollow articles the inner surfaces thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/151—Coating hollow articles
    • B29C48/152—Coating hollow articles the inner surfaces thereof
    • B29C48/153—Coating both inner and outer surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/901—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies
    • B29C48/902—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies internally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9115—Cooling of hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • 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
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
    • F16L58/04—Coatings characterised by the materials used
    • F16L58/10—Coatings characterised by the materials used by rubber or plastics
    • F16L58/1009—Coatings characterised by the materials used by rubber or plastics the coating being placed inside the pipe
    • F16L58/1045—Coatings characterised by the materials used by rubber or plastics the coating being placed inside the pipe the coating being an extruded or a fused layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2202/00—Metallic substrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92809—Particular value claimed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895—Barrel or housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/151—Coating hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0072—Roughness, e.g. anti-slip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

1. Устройство для нанесения термопластичных покрытий на внутреннюю поверхность металлических труб, включающее экструдер и универсальную головку, отличающееся тем, что универсальная головка, имеющая канал подачи и содержащая, распределительную головку и насадку, имеет сменную распределительную головку, выполненную с возможностью нанесения покрытий на металлические трубы различной длины, которая ограничена длиной канала подачи, различным внутренним диаметром и различной толщиной покрытия, причем распределительная головка имеет отверстие, сообщающееся с каналом подачи, канал подачи выполнен в виде стержня с осевым отверстием и имеет, по крайней мере, четыре ТЭНа, уложенные в канавки, при этом наружная поверхность насадки обработана не менее чем до 7-го класса чистоты для получения гладкой поверхности покрытия. ! 2. Устройство по п.1, отличающееся тем, что канавки расточены по образующей стержня на равном удалении друг от друга. ! 3. Устройство по п.1 или 2, отличающееся тем, что наружная поверхность стержня с ТЭНами обмотана асбестовой тканью и закрыта металлической трубкой. ! 4. Устройство по п.1, отличающееся тем, что отверстие в распределительной головке, сообщающееся с каналом подачи, переходит, по крайней мере, в четыре канала, подающие термопласт в заполняемую область. ! 5. Устройство по п.1 или 4, отличающееся тем, что распределительная головка имеет наружный диаметр, соответствующий внутреннему диаметру, подлежащей покрытию трубы, с возможностью выполнения одновременно роли центратора для получения покрытия равномерной толщины. ! 6. Устройство по п.1, отличающееся тем, что насадка выполнена в виде цилиндра с 1. A device for applying thermoplastic coatings on the inner surface of metal pipes, including an extruder and a universal head, characterized in that the universal head having a feed channel and comprising a distribution head and nozzle has a replaceable distribution head configured to coat metal pipes different lengths, which is limited by the length of the feed channel, various internal diameters and various coating thicknesses, the distribution head having an opening The channel communicating with the feed channel, the feed channel is made in the form of a rod with an axial hole and has at least four heating elements laid in grooves, while the outer surface of the nozzle is processed at least up to grade 7 to obtain a smooth coating surface . ! 2. The device according to claim 1, characterized in that the grooves are bored along the generatrix of the rod at an equal distance from each other. ! 3. The device according to claim 1 or 2, characterized in that the outer surface of the rod with heating elements is wrapped with asbestos cloth and closed with a metal tube. ! 4. The device according to claim 1, characterized in that the hole in the distribution head, communicating with the feed channel, passes into at least four channels supplying the thermoplastic to the filled area. ! 5. The device according to claim 1 or 4, characterized in that the distribution head has an outer diameter corresponding to the inner diameter of the pipe to be coated, with the possibility of simultaneously playing the role of a centralizer to obtain a coating of uniform thickness. ! 6. The device according to claim 1, characterized in that the nozzle is made in the form of a cylinder with

Claims (8)

1. Устройство для нанесения термопластичных покрытий на внутреннюю поверхность металлических труб, включающее экструдер и универсальную головку, отличающееся тем, что универсальная головка, имеющая канал подачи и содержащая, распределительную головку и насадку, имеет сменную распределительную головку, выполненную с возможностью нанесения покрытий на металлические трубы различной длины, которая ограничена длиной канала подачи, различным внутренним диаметром и различной толщиной покрытия, причем распределительная головка имеет отверстие, сообщающееся с каналом подачи, канал подачи выполнен в виде стержня с осевым отверстием и имеет, по крайней мере, четыре ТЭНа, уложенные в канавки, при этом наружная поверхность насадки обработана не менее чем до 7-го класса чистоты для получения гладкой поверхности покрытия.1. A device for applying thermoplastic coatings on the inner surface of metal pipes, including an extruder and a universal head, characterized in that the universal head having a feed channel and comprising a distribution head and nozzle has a replaceable distribution head configured to coat metal pipes different lengths, which is limited by the length of the feed channel, various internal diameters and various coating thicknesses, the distribution head having an opening The channel communicating with the feed channel, the feed channel is made in the form of a rod with an axial hole and has at least four heating elements laid in grooves, while the outer surface of the nozzle is processed at least up to grade 7 to obtain a smooth coating surface . 2. Устройство по п.1, отличающееся тем, что канавки расточены по образующей стержня на равном удалении друг от друга.2. The device according to claim 1, characterized in that the grooves are bored along the generatrix of the rod at an equal distance from each other. 3. Устройство по п.1 или 2, отличающееся тем, что наружная поверхность стержня с ТЭНами обмотана асбестовой тканью и закрыта металлической трубкой.3. The device according to claim 1 or 2, characterized in that the outer surface of the rod with heating elements is wrapped with asbestos cloth and closed with a metal tube. 4. Устройство по п.1, отличающееся тем, что отверстие в распределительной головке, сообщающееся с каналом подачи, переходит, по крайней мере, в четыре канала, подающие термопласт в заполняемую область.4. The device according to claim 1, characterized in that the hole in the distribution head, communicating with the feed channel, passes into at least four channels supplying the thermoplastic to the filled area. 5. Устройство по п.1 или 4, отличающееся тем, что распределительная головка имеет наружный диаметр, соответствующий внутреннему диаметру, подлежащей покрытию трубы, с возможностью выполнения одновременно роли центратора для получения покрытия равномерной толщины.5. The device according to claim 1 or 4, characterized in that the distribution head has an outer diameter corresponding to the inner diameter of the pipe to be coated, with the possibility of simultaneously playing the role of a centralizer to obtain a coating of uniform thickness. 6. Устройство по п.1, отличающееся тем, что насадка выполнена в виде цилиндра с полостью и, по крайней мере, четырьмя каналами для распыления охлаждающей жидкости, расположенными на противоположном от распределительной головки торце.6. The device according to claim 1, characterized in that the nozzle is made in the form of a cylinder with a cavity and at least four channels for spraying coolant located on the opposite end from the distribution head. 7. Способ нанесения термопластичных покрытий на внутреннюю поверхность металлических труб, включающий очистку и обезжиривание внутренней поверхности металлической трубы, нагнетание термопласта и последующее его отверждение, отличающийся тем, что перед нагнетанием термопласта канал подачи разогревают с помощью установленных в нем ТЭНов на 20-30°С выше температуры перехода термопласта в вязкотекучее состояние, а в полость насадки подают, под давлением, охлаждающую жидкость, например тосол или водопроводную воду, для охлаждения стенок и поддержания температуры насадки не более 40°С с возможностью отвердения покрытия и получения равномерной структуры покрытия и прочной связи с металлической трубой.7. A method of applying thermoplastic coatings to the inner surface of metal pipes, including cleaning and degreasing the inner surface of the metal pipe, injecting the thermoplastic and then curing it, characterized in that before the thermoplastic is injected, the feed channel is heated with the help of heating elements installed in it at 20-30 ° C higher than the transition temperature of the thermoplastic into a viscous flow state, and coolant, for example antifreeze or tap water, is supplied into the cavity of the nozzle under pressure to cool the walls and maintaining the nozzle temperature not more than 40 ° С with the possibility of hardening the coating and obtaining a uniform coating structure and strong bond with the metal pipe. 8. Способ по п.7, отличающийся тем, что после начала нагнетания термопласта, покрываемую трубу приводят роликами в движение, в одном направлении с подачей термопласта, со скоростью, соответствующей скорости подачи термопласта. 8. The method according to claim 7, characterized in that after the injection of the thermoplastic begins, the pipe to be coated is driven by the rollers in the same direction as the thermoplastic, at a speed corresponding to the feed rate of the thermoplastic.
RU2009129767/05A 2009-08-03 2009-08-03 Device to apply thermoplastic coat on metal pipe inner surface RU2417884C2 (en)

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Application Number Priority Date Filing Date Title
RU2009129767/05A RU2417884C2 (en) 2009-08-03 2009-08-03 Device to apply thermoplastic coat on metal pipe inner surface
PCT/RU2010/000228 WO2011016750A1 (en) 2009-08-03 2010-05-04 Method for applying thermoplastic coatings to the internal surface of metallic pipes and apparatus for carrying out said method
PCT/IB2010/001921 WO2011015933A2 (en) 2009-08-03 2010-08-02 Device for coating the inside surface of metal pipes and method for producing the thermoplastic coating

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WO2011015933A3 (en) 2011-04-21
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