WO2017124824A1 - Vanne sphérique à ultra basse température du type à partie supérieure cunéiforme et procédé de préparation associé - Google Patents

Vanne sphérique à ultra basse température du type à partie supérieure cunéiforme et procédé de préparation associé Download PDF

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Publication number
WO2017124824A1
WO2017124824A1 PCT/CN2016/106611 CN2016106611W WO2017124824A1 WO 2017124824 A1 WO2017124824 A1 WO 2017124824A1 CN 2016106611 W CN2016106611 W CN 2016106611W WO 2017124824 A1 WO2017124824 A1 WO 2017124824A1
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Prior art keywords
stainless steel
low temperature
temperature
ultra
ball valve
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Ceased
Application number
PCT/CN2016/106611
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English (en)
Chinese (zh)
Inventor
李海伟
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Jiang Su Yan Dian Fa Men Co Ltd
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Jiang Su Yan Dian Fa Men Co Ltd
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Publication of WO2017124824A1 publication Critical patent/WO2017124824A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/001—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass valves or valve housings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
    • B23P23/04—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0236—Cold rolling
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
    • C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details

Definitions

  • the present invention relates to a wedge-top type ultra-low temperature ball valve and a production method thereof, and belongs to the field of machinery.
  • Liquefied natural gas (LNG), as a clean fuel, has become one of the main energy sources for urban pipeline gas supply, distributed energy systems, vehicles and aircraft.
  • LNG is a product of natural gas liquefaction in a purified and ultra-low temperature state (-162 ° C, one atmosphere).
  • the volume of natural gas after liquefaction is about 1/600 of natural gas volume (0 ° C, 1 atmosphere ⁇ ).
  • LNG is colorless and odorless, its main component is methane, and there are few other impurities.
  • the liquid density is about 426 kg/m3, and the helium gas density is about 1.5 kg/m3.
  • the explosion limit is 5 % ⁇ 15 ⁇ 3 ⁇ 4 (volume ⁇ 3 ⁇ 4) and the ignition point is 450 °C.
  • the construction of process supporting equipment for natural gas liquefaction, transportation, storage and vaporization has brought opportunities for the development of ultra-low temperature valves.
  • the main low-temperature shut-off valves of China's multi-meter valves are ultra-low temperature ball valves, ultra-low temperature gate valves, ultra-low temperature shut-off valves and ultra-low temperature butterfly valves, among which the ultra-low temperature ball valves are used in large quantities.
  • cryogenic valves in the petrochemical industry is defined according to the design temperature of the transport medium. Generally, valves used below the medium temperature of -40 ° C are called cryogenic valves, and valves applied below the medium temperature -10 rC are called As an ultra-low temperature valve. Ultra-low temperature ball valves are mainly used in liquefied natural gas, liquefied petroleum gas and air separation plants.
  • the liquid cryogenic media are: liquid oxygen, liquid hydrogen, liquefied natural gas, and liquefied petroleum products. These media are not only flammable and explosive, but also vaporize when heated or flashed. The volume of gasification is rapidly expanding. If the valve that transports these fluids has a closed valve cavity and the structural design is unreasonable, it will cause the valve cavity to exceed Pressure, which causes the media to leak, and even the valve splitting causes an accident.
  • the bonnet of the cryogenic valve is designed with an extended bonnet.
  • the extended bonnet is designed to keep the valve operating handle and packing installation away from the low temperature zone, which can avoid the cold burn of the valve operator caused by the low temperature of the medium, and can also make the filler of the valve work at normal temperature to ensure that the filler will not be affected. The damage of the frost causes the filler to fail.
  • the extended bonnet also ensures the space for cold preservation construction, and the packing gland is located outside the cold insulation layer, adding filler and tightening the gland bolt ⁇ without damaging the cold insulation layer.
  • the present invention is directed to a wedge-top type ultra-low temperature ball valve and a production method thereof, which are made of a stainless steel material, which has a high strength and can be at an ultra-low temperature of -285 ° C. toughness.
  • the wedge-top ultra-low temperature ball valve of the present invention is evaluated: the weld value of the butt weld end of the valve body and the short pipe at -285 °C.
  • the welding procedure qualification report shall refer to the ASMEB31.3 standard requirements for a -285 °C Charpy V-type impact test. The standard specimen shall be tested for lateral expansion of less than 0.25 mm.
  • the present invention provides a wedge-top type ultra-low temperature ball valve and a production method thereof, which are made of a stainless steel material, and which has an ultra-low temperature of -285 ° C, still High strength and toughness.
  • the wedge-top type ultra-low temperature ball valve of the present invention is evaluated: the weld value of the butt weld end of the valve body and the short pipe - the impact value at -285 °C.
  • the welding procedure qualification report shall refer to the ASMEB31.3 standard requirements for a -2 85 °C Charpy V-type impact test.
  • the standard specimen test shall have a lateral expansion value of less than 0.25 mm.
  • the invention has obtained optimized formulations and parameters through a large number of experiments, thereby producing a wedge-type ultra-low temperature ball valve with unexpected low temperature resistance.
  • the weld of the butt weld end of the valve body and the short pipe have an impact value at -285 °C.
  • the welding procedure qualification report shall refer to the ASMEB31.3 standard for a -285 °C Charpy V-type impact test.
  • the standard specimen shall be tested for lateral expansion of less than 0.25 mm.
  • a wedge-top cryogenic fixed ball valve comprising a valve body, an extended valve cover, a valve seat ring, a sealing ring, a ball, an elongated valve stem, a lower fixed shaft, a leaf spring, a bushing, a LIP SEAL assembly, a washer , combined packing, plain bearings, radial bearings, connecting plates, handles, T-shaped tees, keys and so on.
  • Both the ball and the valve inner part are loaded into the upper cavity of the valve body, and can be repaired online.
  • Two sides of the spherical body are provided with two inclined wedge seat seats, the valve seat is a radial two-way sealing ring, the sealing surface is an eccentric arc surface, and the two valve seats and the ball body can be automatically centered, the upper part of the ball body There is a leaf spring. Under the action of the spring force, the sealing surface of the seat is closely fitted with the ball to form a reliable seal.
  • the valve stem is designed as a step, has an anti-blowing structure, and adopts a double seal design.
  • the present invention also provides a method for preparing a wedge-top ultra-low temperature ball valve:
  • a wedge-top type ultra-low temperature ball valve which is prepared by the following method:
  • the invention is advantageous in that:
  • the present invention obtains optimized formulations and parameters through a large number of experiments, thereby producing a wedge-type ultra-low temperature ball valve with unexpected low temperature resistance.
  • the welding procedure qualification report shall refer to the ASMEB31.3 standard requirements for a -285 °C Charpy V-type impact test. The standard specimen shall be tested for lateral expansion of less than 0.25 mm.
  • the three refinement modifiers have positive effects on stainless steel smelting, but there are certain limitations in the use of niobium alone. If Sr is added separately for modification, the inhalation tendency of the alloy is intensified, and the compactness of the alloy is lowered. The formation of severe columnar crystal structure results in a decrease in mechanical properties, the rare earth is easily oxidized, and the metamorphic effect is maintained for a short period of time. The anti-attenuation properties of ⁇ 1-5 ⁇ - ⁇ refiner are still unsatisfactory and are susceptible to Zr atoms. The ability to poison and lose grain refinement cannot fully exploit their respective advantages. The combination of the three can overcome their own shortcomings to fully exploit their respective advantages.
  • the ultrasonic vibration is extended by the ultrasonic vibration under a certain amplitude, which can reduce the friction force during the rolling process. Therefore, the influence of friction on the surface of the stainless steel sheet is reduced. Compared with the static cold rolling, the ultrasonic vibration cold-rolled stainless steel surface is smoother, which is advantageous for the next step of operation.
  • the mixed powders C and V are uniformly applied to the surface of the stainless steel plate, and the stainless steel plate is laser-modified by a cross-flow continuous wave Cq laser, which can effectively form the nano-scale indentation on the surface of the stainless steel plate.
  • the mixed powders C and V are melted to cover the surface of the stainless steel sheet.
  • the surface of the stainless steel sheet forms nano-scale pits, which increases the surface area of the stainless steel sheet and improves the friction.
  • the next step is to make the octadecyltrichlorosilane solution easier.
  • a wedge-top type ultra-low temperature ball valve which is prepared by the following method:
  • the ingot is cut into a suitable size, and then subjected to homogenization annealing at 600 ° C for 12 hours, furnace cooling to room temperature; [0044] (5) The ingot is heated to 520 ° C and then insulated for 3 hours, three times of hot rolling, after each hot rolling is 580 ° C for 35 min;
  • (9) uniformly apply the mixed powders C and V to the surface of the stainless steel plate, and laser-treat the stainless steel plate with a cross-flow continuous wave Cq laser to form a nano-scale indentation on the surface of the stainless steel plate to mix the powder.
  • C and V melt over the surface of the stainless steel sheet, and the argon gas is used for protection during the treatment.
  • the laser process parameters range from: laser power 1.7kw, scan rate 13mn/s, beam spot diameter of 4m m;
  • results The wedge-top type ultra-low temperature ball valve produced by the present invention and having an ultra-low temperature of -285 ° C still have high strength and toughness.
  • the wedge-top ultra-low temperature ball valve of the present invention is evaluated: the valve body butt weld end and The weld of the short pipe - the impact value at 285 ° C qualified.
  • the welding procedure qualification report shall refer to the ASMEB31.3 standard requirements for a -285 °C Charpy V-type impact test. The standard specimen shall be tested for a lateral expansion of 0.12 mm.
  • a wedge-top type ultra-low temperature ball valve which is prepared by the following method:
  • the welding assembly is made into a wedge-top type ultra-low temperature ball valve: the stainless steel obtained by the above steps is made into a valve body, a valve cover and a sphere, and the structure of the material is kept stable at an ultra-low temperature working temperature to prevent the material phase. It causes volume changes and reduces the effects of machining on part deformation.
  • the main components in contact with the medium must be cryogenically treated.
  • the valve body, bonnet, ball, valve seat and valve stem are immersed in the liquid nitrogen tank for cooling after roughing and finishing.
  • the insulation is started. 2h, then take out the box and naturally process it to normal temperature, repeat the cycle 2 times, and the parts are also subjected to cryogenic treatment after welding to eliminate stress and deformation.
  • results The wedge-top type ultra-low temperature ball valve produced by the present invention and having an ultra-low temperature of -285 ° C still have high strength and toughness.
  • the wedge-top type ultra-low temperature ball valve of the present invention is evaluated: the weld of the butt weld end of the valve body and the short pipe is acceptable at a shock value of -285 °C.
  • the welding procedure qualification report shall refer to the ASMEB31.3 standard requirements for a -285 °C Charpy V-type impact test. The standard specimen shall be tested for a lateral expansion of 0.25 mm.
  • a wedge-top type ultra-low temperature ball valve which is prepared by the following method:
  • (9) uniformly apply the mixed powders C and V to the surface of the stainless steel plate, and laser-treat the stainless steel plate with a cross-flow continuous wave Cq laser, so that the surface of the stainless steel plate forms a nano-scale indentation and the mixed powder is mixed.
  • C and V melt over the surface of the stainless steel sheet, and the argon gas is used for protection during the treatment.
  • the laser process parameters range from: laser power 1.7kw, scan rate 13mn/s, beam spot diameter of 4m m;
  • results The wedge-top ultra-low temperature ball valve produced by the present invention and having an ultra-low temperature of -285 ° C still have high strength and toughness.
  • the wedge-top type ultra-low temperature ball valve of the present invention is evaluated: the weld of the butt weld end of the valve body and the short pipe is acceptable at a shock value of -285 °C.
  • the ASMEB31.3 standard requirement shall be applied to carry out the -285 °C Charpy V-type impact test.
  • the standard specimen shall be tested for a lateral expansion value of 0.13 mm.
  • a wedge-top type ultra-low temperature ball valve prepared by the following method:
  • [0101] (9) uniformly apply the mixed powders C and V to the surface of the stainless steel plate, and laser-treat the stainless steel plate with a cross-flow continuous wave Cq laser to form a nano-scale indentation on the surface of the stainless steel plate to mix the powder.
  • C and V melt over the surface of the stainless steel sheet, and the argon gas is used for protection during the treatment.
  • the laser process parameters range from: laser power 1.7kw, scan rate 13mn/s, beam spot diameter of 4m m;
  • the wedge-top type ultra-low temperature ball valve produced by the invention has the ability to have an ultra-low temperature of -285 ° C, Still has high strength and toughness.
  • the wedge-top type ultra-low temperature ball valve of the present invention is evaluated: the weld value of the butt weld end of the valve body and the short pipe is acceptable at -285 °C.
  • the standard specimen test has a lateral expansion value of 0.24 mm.
  • the stainless steel wedge-type ultra-low temperature ball valve of the present invention has an unexpectedly high strength (more than 35% increase in tensile strength of ordinary austenitic stainless steel) and an elongation increase of 15%.
  • the long life acid and alkali resistant salt water resistance
  • stable performance in a low temperature environment long life and other significant advantages.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
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Abstract

L'invention concerne une vanne sphérique à ultra basse température du type à partie supérieure cunéiforme et un procédé de préparation associé. La vanne sphérique est principalement préparée par les étapes suivantes : détermination de la composition en éléments chimiques de l'acier inoxydable, fusion, échantillonnage et analyse, désoxydation scorification, raffinage, déversement, coulée dans une louche, coup d'arc, refroidissement naturel, préchauffage, formation d'un lingot, laminage à chaud, laminage à froid, traitement par ultrasons, recuit, trempe à l'eau, vieillissement en deux étapes, application uniforme des poudres mixtes C et V à la surface de la tôle d'acier inoxydable, traitement au laser, trempage, séchage et assemblage par soudage. La vanne sphérique à ultra basse température du type à partie supérieure cunéiforme obtenue par ce procédé présente une très bonne résistance aux basses températures.
PCT/CN2016/106611 2016-01-21 2016-11-21 Vanne sphérique à ultra basse température du type à partie supérieure cunéiforme et procédé de préparation associé Ceased WO2017124824A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610037907.4 2016-01-21
CN201610037907.4A CN105619027B (zh) 2016-01-21 2016-01-21 一种楔顶式超低温球阀

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CN105624492A (zh) * 2016-04-08 2016-06-01 董超超 新型高强度抗腐蚀机床
CN109317982B (zh) * 2018-12-20 2023-09-15 常州伟泰科技股份有限公司 一种管件加工组合设备
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CN102829212A (zh) * 2012-08-20 2012-12-19 天津祥嘉流体控制系统有限公司 一种超低温球阀
CN105042106A (zh) * 2015-07-21 2015-11-11 上海凯工阀门有限公司 一种上装式超低温球阀
CN105619027A (zh) * 2016-01-21 2016-06-01 江苏盐电阀门有限公司 一种楔顶式超低温球阀

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