WO2010011152A1 - Устройство для термомеханического соединения труб - Google Patents
Устройство для термомеханического соединения труб Download PDFInfo
- Publication number
- WO2010011152A1 WO2010011152A1 PCT/RU2008/000485 RU2008000485W WO2010011152A1 WO 2010011152 A1 WO2010011152 A1 WO 2010011152A1 RU 2008000485 W RU2008000485 W RU 2008000485W WO 2010011152 A1 WO2010011152 A1 WO 2010011152A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pipes
- bellows
- casing
- pipe
- parts
- Prior art date
Links
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
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/20—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics based principally on specific properties of plastics
- F16L47/22—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics based principally on specific properties of plastics using shrink-down material
Definitions
- the invention relates to the field of engineering, namely, devices for connecting parts of a cylindrical shape, mainly pipes, and can be used to solve the problems of tight connection of large diameter pipes used in oil and gas production when laying pipelines both on land and under water.
- the device comprises a frame on which hydraulic jacks are installed to center the ends of the pipes.
- the device is also equipped with a sealed working chamber for welding and assembly of pipe ends in a dry way.
- the working chamber is drained with compressed air to ensure a normal "cyxo" seam.
- the disadvantage of this device is the complexity of the equipment for welding underwater conditions.
- the device uses a hydraulic station with a working fluid, powerful fans for air drying the volume of the working chamber and the working chamber itself for performing welding operations in a dry way.
- a device for connecting the ends of the pipes in the form of a pipe coupling (see application Ns OS 37 02 948 MKI 4 F16L 21/06, Germany).
- the pipe coupling consists of two half-pipes, which are pulled together radially to each other by means of clamping devices, forming an axial joint (along the pipe).
- the half-shells have annular shoulders protruding radially inward for axial gripping of the connecting collar.
- a sealing ring is located that interacts with the pipe wall through the sealing surface.
- the sealing ring in the axial direction rests on the connecting collar and the support ring, worn on the pipe and covered by a half-body.
- the sealing ring has a shaped profile that contributes to the tightness of the axial connection.
- the support ring together with the flat end surface of the collar and the surface of the pipe forms an annular sealing chamber of triangular section.
- the specified coupling includes many parts, including half-shells, for the manufacture of which a large amount of metal is required, as well as the large labor required to make the end faces to be sealed. Installing this coupling under water will require additional labor and additional time.
- thermomechanical bushings used as means for connecting pipes made of a material with a shape memory effect (EPF) - titanium nickelide (nickel alloy with titanium) (Tikhonov A.S. et al. Application of the shape memory effect in modern engineering Moscow, “Machinery”, 1981, pp. 56-62).
- EPF shape memory effect
- TMC thermomechanical joints
- thermomechanical connection of ship pipelines.
- Technical conditions Approved by the Central Research Institute of KM “POMETEY”; RD5.UEIA.2836-90 Thermomechanical connections for ship systems. Manufacturing and assembly technology. Typical technological process.
- Thermomechanical connection (TMC) of pipelines is an integral connection of pipelines using a sleeve made of an alloy with EPF.
- Known thermomechanical couplings are used to connect the ends of pipes of small diameter (within 40 mm).
- the technology of their installation at the ends of the pipes includes the operations of “freezing” in liquid nitrogen, radial deformation - increasing the internal diameter, storage and transportation of couplings in special refrigerators until they are installed on the pipes.
- the sleeve mounted on the pipe restores the original size of the inner diameter to form a thermomechanical connection.
- the objective of the present invention is to provide economical reliable hermetic connection of pipes of any diameter both on land and under water at the lowest energy costs, labor and time required for the operation of connecting the pipes.
- the problem is solved in that in the known TMC piping containing a connecting working body, covering the ends of the connected pipes, made of a material with a memory effect forms (thermomechanical shape memory), according to the invention, the connecting working body is made in the form of a bellows with a cooler-heater, which are enclosed in a sealed detachable cylindrical casing formed of two parts.
- a heat shield is fixed on the inner surface of the casing, and flanges with a rubber gasket are made at the ends.
- the cooler-heater is made in the form of two pipe-coils in communication with a source of energy, mounted on the halves of the casing, respectively.
- Coil pipes are installed outside the bellows, between its corrugations.
- sealing, elastic rings are installed on the surfaces of the bellows corrugations in contact with the connected ends of the pipes.
- each quick-detachable clamp is made in the form of a boot fixed to one part of the casing with an articulated fork, in which an eccentric cracker with a handle is installed with the possibility of its interaction with the other part of the casing.
- the pipe-coils of the cooler-heater are bent congruently to the bellows corrugation and have end pipes for supplying and removing energy, and openings with a seal are made in the casing for a tight outlet of the pipes.
- on the casing in the middle part on the outside, made a butt for transporting the device.
- the bellows is installed on the simulator of the connected pipe ends, which protects it from environmental influences and for ease of transportation.
- This technical solution due to the implementation of the connecting working body in the form of a siphon made of a material with EPF allows to unify its use for a sealed connecting the ends of pipes of any diameter, including large ones, which is important when laying pipelines in the oil and gas industry, both on land and under water, and also saves the cost of alloying to manufacture a bellows instead of a thick-walled coupling, especially for connecting large diameter pipes .
- the inventive device improves the reliability of the connection of the docking unit due to the installation on the inner surfaces of the bellows corrugation in contact with the connected ends of the pipelines, elastic sealing rings that will prevent corrosion of steel parts (pipes) from the influence of titanium-nickel alloy, from which the connecting working body is a bellows, especially when the pipeline is in marine conditions.
- the reliability of the connection of the ends of the pipes is also increased due to the implementation of elastic sealing rings with concave working surfaces, as a result of which, at the moment of bellows forming, hollow grooves of the concave surfaces of the sealing rings will create a “scratching” phenomenon on the surfaces of the ends of the joined pipes and bellows corrugations.
- the proposed device for creating a sealed reliable connection of pipes consumes a small amount of energy (refrigerant or waste hot water), since hot water is required to accelerate the process of forming the bellows, because the process of connecting the ends of the pipes occurs due to the internal energy of the phase transformation in the material of the bellows, initiated by the action on it is the heat of the environment - air or water.
- recycled hot water can be supplied to it with a temperature not exceeding 100 0 C.
- the new device does not require significant time spent on installation work on connecting the ends of pipes both on land and at sea, which is extremely important for the organization of labor of builders - installers (divers) under water, due to performing bellows made of an alloy with EPF in advance in the factory, placing it in a casing while maintaining the subzero temperature, transporting it in a ready state to the pipe junction.
- the energy saving for the process of tightly connecting the pipes was achieved by performing a casing with a heat-shielding around the bellows, eliminating the influence of the environment - cold air or sea water on the bellows, and also by installing the bellows until the connected parts (pipe ends) are used on the simulator protecting the bellows from premature deformation from environmental influences.
- the inventive device allows to reduce the labor costs and time required for the tight connection of parts (pipes), since additional mechanical processing of the ends of the pipes to be connected will not be required as a result of the use of elastic sealing rings with biconcave contact surfaces, which, when the bellows are shaped, bend around the convexity of the surface of the parts to be joined and fill concavity of the latter.
- the execution of the casing is detachable with quick-release clamps, with butts for transporting the device, as well as the execution in the casing of sealed openings for the hermetic outlet of the nozzles with the inlet - outlet of the energy carrier will reduce the time for preparing and conducting the operation of connecting the pipes.
- FIG. 1 General view of the device
- FIG. 3 - section FJ with FIG. 1 is a longitudinal section of a device mounted on a simulator of cylindrical parts - pipe ends
- FIG. 4 - section BB of Fig. 1 (with an end pipe for supplying energy to a cooler-heater)
- FIG. 5 is a sectional view of BB of FIG. 1 (with an end branch pipe of an energy carrier outlet)
- FIG. 6 is a schematic illustration of a device with a bellows in an operational position.
- FIG. 7 is a section DD of FIG. 2 in an expanded form (view of the casing from the inside with a cooler-heater)
- FIG. 8 is a part of section GG of FIG. 1 (quick-release clamp for connecting parts of the casing)
- FIG. 9 is a view E of FIG. 8 (top view of a quick-release clip for connecting parts of the casing).
- thermomechanical connection of cylindrical parts mainly pipes 1 and 2 contains a bellows 3 (see Fig. 3,6) made of an alloy with a thermomechanical shape memory.
- the bellows 3 are installed on the ends of the connected pipes 1 and 2.
- the bellows 3 is installed on the simulator 4 of the ends of the connected pipes 1, 2, which is designed to protect the bellows 3 from the inside from the external environment until the device is used (during transportation etc.).
- Simulator 4 has an outer diameter equal to the outer diameter of the connected pipes and is made of non-metallic heat-shielding material, for example, spheroplastics of the EDC-5AC grade according to TU5.966-21114-85, which has a porous structure, which has positive buoyancy in water, as well as increased strength.
- the bellows 3 is enclosed in a casing consisting of two parts 5 and 6 (see Fig. 1 and 2), designed to protect the bellows 3 from the influence of the external environment.
- a cooler-heater 7 is installed (see Fig. 2 and 3).
- the bellows 3 has corrugations with external convexities 8 and concavities 9.
- non-metallic sealing elastic rings 10 are sealed, for example, using frost-resistant polyamide . Sealing the elastic rings 10 on the working radial contact planes have a concavity 11 in the cross section to create a “pricoca” phenomenon at the time of bellows 3 forming.
- the bellows 3 is made of a TiNi alloy (titanium nickelide or nitinol) having a shape memory effect (EPF) (V. Tokareva et al. Physics of Metals and Metallurgy, M., Nauka, 1983, vol. 56, issue 2, p. . 340-343, TH-1K alloy according to TU 1-809-275, hot-pressed pipes according to TU1 -809-95).
- the deformation of the alloy indicated by V. H. Tokareva et al., When it changes to a value of up to 16%, the deformation of the alloy TH-1 K when it changes to a value of 4-6%.
- Industrial known alloy TH-1 K which is used in the inventive device.
- bellows 3 For the intended use of the alloy on land, where, in the conditions of the Far North, the air temperature can drop to minus 40 0 C, bellows 3 must have a martensitic transformation temperature M to equal minus 60 0 C in order to avoid spontaneous change when cooling to a temperature above minus 40 ° C.
- the criterion for austenitic transformation of the alloy will be temperatures from 40 0 C to 50 0 C, both for the installation of bellows 3 on land and in the sea.
- the temperature of the austenitic transformation of A to in its alloy should be from 50 0 C to 60 0 C in order to avoid its spontaneous change at a temperature of 32 0 C.
- the bellows 3 Before delivery of the device to the place of operation, the bellows 3 is cooled to a temperature of minus 60 0 C in the factory, it is deformed to increase the internal diameter by an amount that allows the bellows to fit freely on the simulator 4, i.e. 4-6% more than the outer diameter of the joined ends of the pipes 1, 2.
- “remembering” this shape occurs (see ((Application of the shape memory effect in modern engineering edited by A.S. Tikhonov et al. M., Mechanical Engineering, 1981, pp. 4-7, 33), as a result of which, upon further cooling to martensitic deformation at a temperature of minus 60 0 C, bellows 3 recalls its shape (enlarged diameter).
- the cooler-heater 7 (see FIGS. 2-5,7) is used for cooling - heating the bellows 3 and is made in the form of two coil pipes that are curved congruently into the bellows 3, which are attached to the inner walls of the parts of the casing 5.6 and are installed outside the bellows 3 between its corrugations.
- the end pipes 12 of the pipes (see FIGS. 4 and 5) of the cooler-heater 7 are removed from the casing through the holes 13 sealed in them.
- the end pipes 12 connect the cooler-heater 7 to an energy source (refrigerant or utilized hot water) to ensure regulation bellows temperature 3.
- End pipes 12 are mounted in flanges 14 (see Figs.
- Parts of the casing 5 and 6 (Figs. 3 and 7) have walls 22 with flanging 23, the inner surface of which is attached a rubber gasket 24 (see Fig.Z) to create a seal when in contact with the ends of the pipes 1 and 2 or with a removable cylinder - simulator 4.
- the inner walls of the parts 5 and 6 of the casing have a heat-shielding shell 25 made of silica gel.
- a device with a bellows 3, which is pre-set at the factory to the state of deformation at given temperatures and which is installed on the simulator 4 is delivered to the place of operation for connecting pipes 1 and 2.
- the outdoor air temperature can drop to minus 40 0 C, and in the summer it can heat up to + 40 0 C, so it is necessary to transfer refrigerant, for example, liquid nitrogen to the cooler-heater 7 to create a temperature inside the casing to minus 60 0 C, at which bellows 3 recalls its predetermined increased inner diameter, which is 4-6% larger than the outer diameter of the simulator 4 or connected pipes 1 and 2.
- refrigerant for example, liquid nitrogen
- bellows 3 recalls its predetermined increased inner diameter, which is 4-6% larger than the outer diameter of the simulator 4 or connected pipes 1 and 2.
- Lowering the minus ambient temperature of minus 40 0 C to minus 60 0 C contributes to the guarantee of exceeding the internal diameter bellows 3 is 4-6% larger than the outer diameter of the connected pipes 1, 2 or simulator 4, which makes it possible to remove the device from simulator 4.
- simulator 4 is removed from the bellows 3 located inside the casing.
- simulator 4 In place of the simulator 4 inside the bellows 3 (see Fig. 3) start the ends of the connected pipes 1 and 2, and then stop the flow of energy (refrigerant) to the cooler-heater 7 and the bellows 3, being in contact with the environment, it begins to heat from the ambient temperature to a value of plus 32 0 C ... plus 40 0 C.
- hot water or steam with a temperature of 100 0 C is supplied to the cooler-heater 7 to heat the bellows 3 to a temperature of 50-60 0 C. at which the bellows 3 recalls its predetermined reduced inner diameter, which is 2-4% less than the outer diameter the joined ends of the pipes 1, 2.
- the bellows 3 recalls its predetermined reduced inner diameter, which is 2-4% less than the outer diameter the joined ends of the pipes 1, 2.
- a phase transformation occurs upon the transition of the martensitic structure to austenitic.
- the rings 10 are deformed and tightly cover the perimeter of the surfaces of the parts to be joined, the ends of the pipes 1 and 2, filling all the irregularities and roughnesses in the surfaces of the bellows corrugation 3 that are in contact with them and covered by it pipes 1 and 2, due to which a tight one-piece connection is created.
- a casing 5 and 6 is reinstalled around it, a coolant is supplied to the cooler-heater 7 to cool the bellows 3 to a temperature of minus 60 0 C 1 at which it recalls its internal increased diameter, 4-6% higher diameter of connected pipes 1, 2, which allows dismantling of bellows 3 from the connection point.
- a simulator 4 is installed inside the bellows 3, which prevents the bellows from heating from environmental influences, which helps to reduce the flow of refrigerant.
- the use of the device under water in the marine area in the Far North is as follows. Since the temperature of sea water at the surface varies from minus 2 0 C to 32 0 C, for example, in the conditions of the Baltic Sea, then the martensitic phase transition point in the bellows alloy 3 should be raised to a temperature of minus 24 0 C. But in the conditions of the Far North when transporting the device to the installation site, the environment will influence it, therefore, the air temperature will be minus 40 0 C and the martensitic phase transition point must be at minus 60 0 C. The temperature of the austenitic phase transition in the bellows alloy 3 should be above 32 0 C i.e. about 50 0 C (for example, in the conditions of the Baltic Sea).
- the proposed TMC of pipelines is reliable, hermetic, economical, and universal, due to the design of the connecting working element in the form of a bellows with EPF, which saves the amount of alloy required for its manufacture, allows you to connect pipelines of any diameter without additional processing of their connected ends, especially those used in oil and gas production laying pipelines both on land and under water in the Far North and the Baltic Sea.
- the reliability of the TMC pipelines is also enhanced by the installation of elastic sealing rings between the bellows corrugations and the outer surfaces of the connected ends of the pipelines, which create a protective layer and prevent corrosion of steel pipelines from the influence of titanium-nickel alloy, especially when they are in sea water.
- elastic sealing rings between the bellows corrugations and the outer surfaces of the connected ends of the pipelines, which create a protective layer and prevent corrosion of steel pipelines from the influence of titanium-nickel alloy, especially when they are in sea water.
- the energy consumption during the process of tight connection of pipelines is negligible due to the use of a casing with a heat-shielding shell, eliminating the effect on the connecting working body - the bellows of the environment, cold air or sea water, this also contributes to installation inside the bellows, a technological simulator of the outer diameter of the connected ends of the pipelines until the device is used, which protects the bellows from the influence of the external environment and contributes to the reliability of the device.
- the proposed device is convenient in operation due to the implementation of the casing is detachable, with quick-release clamps and with butts for transporting the device to the place of docking of the connected parts - pipes.
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Abstract
Description
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EA201001476A EA016005B1 (ru) | 2008-07-23 | 2008-07-23 | Устройство для термомеханического соединения труб |
PCT/RU2008/000485 WO2010011152A1 (ru) | 2008-07-23 | 2008-07-23 | Устройство для термомеханического соединения труб |
CN200880129558.2A CN102047018B (zh) | 2008-07-23 | 2008-07-23 | 用于热机械地连接管的装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/RU2008/000485 WO2010011152A1 (ru) | 2008-07-23 | 2008-07-23 | Устройство для термомеханического соединения труб |
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WO2010011152A1 true WO2010011152A1 (ru) | 2010-01-28 |
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PCT/RU2008/000485 WO2010011152A1 (ru) | 2008-07-23 | 2008-07-23 | Устройство для термомеханического соединения труб |
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CN (1) | CN102047018B (ru) |
EA (1) | EA016005B1 (ru) |
WO (1) | WO2010011152A1 (ru) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN104373715B (zh) * | 2014-10-27 | 2016-06-15 | 苏州中拓专利运营管理有限公司 | 一种管口卡接套 |
CN108800345B (zh) * | 2018-06-20 | 2021-10-26 | 广东美的制冷设备有限公司 | 用于压缩机的脚垫、空调室外机、空调器及其控制方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU1430659A1 (ru) * | 1986-03-11 | 1988-10-15 | Всесоюзный научно-исследовательский институт по строительству магистральных трубопроводов | Способ соединени труб |
GB2319316A (en) * | 1996-11-14 | 1998-05-20 | Shaw Ind Ltd | Heat shrinkable member for connecting tubular sections |
RU2145688C1 (ru) * | 1999-07-12 | 2000-02-20 | Закрытое акционерное общество "МосФлоулайн" | Теплоизоляционный стык предварительно теплоизолированных трубопроводов и способ его выполнения |
RU2267687C1 (ru) * | 2004-06-01 | 2006-01-10 | Владимир Валентинович Липатников | Термоусаживающаяся муфта |
-
2008
- 2008-07-23 CN CN200880129558.2A patent/CN102047018B/zh not_active Expired - Fee Related
- 2008-07-23 WO PCT/RU2008/000485 patent/WO2010011152A1/ru active Application Filing
- 2008-07-23 EA EA201001476A patent/EA016005B1/ru not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU1430659A1 (ru) * | 1986-03-11 | 1988-10-15 | Всесоюзный научно-исследовательский институт по строительству магистральных трубопроводов | Способ соединени труб |
GB2319316A (en) * | 1996-11-14 | 1998-05-20 | Shaw Ind Ltd | Heat shrinkable member for connecting tubular sections |
RU2145688C1 (ru) * | 1999-07-12 | 2000-02-20 | Закрытое акционерное общество "МосФлоулайн" | Теплоизоляционный стык предварительно теплоизолированных трубопроводов и способ его выполнения |
RU2267687C1 (ru) * | 2004-06-01 | 2006-01-10 | Владимир Валентинович Липатников | Термоусаживающаяся муфта |
Non-Patent Citations (1)
Title |
---|
TIKHONOV A.S. ET AL.: "Primenenie effecta pamyati formy v sovremennom mashinostroeny.", MOSCOW, MASHINOSTROENIE, 1981, pages 56 - 62 * |
Also Published As
Publication number | Publication date |
---|---|
CN102047018A (zh) | 2011-05-04 |
EA201001476A1 (ru) | 2011-04-29 |
CN102047018B (zh) | 2013-04-24 |
EA016005B1 (ru) | 2012-01-30 |
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