CN104948765A - Cryogenic ball valve - Google Patents

Cryogenic ball valve Download PDF

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Publication number
CN104948765A
CN104948765A CN201510409771.0A CN201510409771A CN104948765A CN 104948765 A CN104948765 A CN 104948765A CN 201510409771 A CN201510409771 A CN 201510409771A CN 104948765 A CN104948765 A CN 104948765A
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CN
China
Prior art keywords
fluid
spheroid
ball valve
cryogenic ball
valve
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Legal status (The legal status 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 status listed.)
Granted
Application number
CN201510409771.0A
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Chinese (zh)
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CN104948765B (en
Inventor
陈浩民
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SUZHOU SIP STARD VALVE CO Ltd
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SUZHOU SIP STARD VALVE CO Ltd
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Priority to CN201510409771.0A priority Critical patent/CN104948765B/en
Publication of CN104948765A publication Critical patent/CN104948765A/en
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Publication of CN104948765B publication Critical patent/CN104948765B/en
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    • 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
    • F16K5/0605—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 with particular plug arrangements, e.g. particular shape or built-in means
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/53—Mechanical actuating means with toothed gearing
    • F16K31/535—Mechanical actuating means with toothed gearing for rotating valves
    • 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
    • F16K5/0647—Spindles or actuating means
    • 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
    • F16K5/0657—Particular coverings or materials

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

The invention relates to a cryogenic ball valve, and belongs to the technical field of valves. The cryogenic ball valve comprises a valve body and a ball body, wherein the valve body comprises a valve seat and a fluid channel, and the fluid channel is provided with a fluid inlet and a fluid outlet; the ball body is located in the fluid channel, is arranged on the valve seat and is contacted with the valve seat to form a valve seat sealing surface; the ball body comprises a transverse channel, and when the ball body is rotated to enable an axis of the transverse channel to be aligned to the axis of the fluid channel, the fluid inlet and the fluid outlet are in a maximum circulating state; when the ball body is rotated to enable the axis of the transverse channel to form a certain angle with the axis of the fluid channel, the fluid circulating quantity between the fluid inlet and the fluid outlet is reduced or eliminated. According to the cryogenic ball valve, the valve can be reliably and safely controlled to be opened and closed through transmission of a turbine and a fan-shaped tooth section; by means of hardening treatment and specific coating treatment, the ball valve is resistant to low temperature and impact, the sealing performance is good, and the structure is safe and reliable.

Description

Cryogenic ball valve
Technical field
The present invention relates to the technical field of valve, more particularly, the present invention relates to a kind of cryogenic ball valve.
Background technique
In prior art, cryogenic ball valve generally includes valve body, valve gap, spheroid, valve rod, and the parts such as gland; Wherein, spheroid is arranged in valve body, and valve gap is arranged on valve body, valve gap and valve body are provided with the stud fixing both, and gland is arranged on valve body, and gland and valve body are provided with the screw fixing both, valve rod is fastened in gland, and stem bottom is connected with spheroid top.
Cryogenic ball valve is mainly applicable on the chemical plant installations such as ethene, LNG Liquefied natural gas, and the liquid low temperature medium of output is as ethene, liquid oxygen, liquid hydrogen etc.In the prior art, the sealing between the valve gap of cryogenic ball valve and valve body, between gland and valve body is poor, also easily causes the generation of the problems such as fastening piece inefficacy in addition.
Summary of the invention
In order to solve above-mentioned technical problem of the prior art, the object of the present invention is to provide a kind of cryogenic ball valve.
A kind of cryogenic ball valve, comprises valve body and spheroid, it is characterized in that: described valve body comprises valve seat and is positioned at the fluid passage above valve seat, and described fluid passage has the fluid input being positioned at one end and the fluid output being positioned at the other end; Described spheroid is positioned at described fluid passage, and described spheroid is arranged on the formation sealing surface of seat that to contact on described valve seat and with described valve seat; Described spheroid comprises a crosspassage, and when making the axial alignment of the axis of described crosspassage and described fluid passage by rotating described spheroid, then described fluid input, fluid output are in maximum flow state; When rotating described spheroid and making the axis of the axis of described crosspassage and described fluid passage angled, then reduce or be closed the fluid discharge value between fluid input and fluid output.
Wherein, described cryogenic ball valve also comprises driver part, and described driver part comprises live axle, fan tooth section and turbine; Described driving the tip of the axis is installed and is fastened on the upper end of described spheroid, and the lower end of described spheroid is arranged on described valve seat by swivel bolt; Described fan tooth section is arranged on the top of described live axle upper end by bolt; Described turbine drives described fan tooth section, and then drives described live axle to rotate, and then drives spheroid to rotate with the unlatching or the closedown that realize valve.
Wherein, described live axle is 1Cr18Ni9Ti Austenitic Stainless Steel.Described live axle, 980 ~ 1050 DEG C of solution treatment 0.5 ~ 1.0 hour, after solution treatment below water-cooled to 350 DEG C, then carries out stabilizing treatment at 850 ~ 880 DEG C.
Wherein, described spheroid is made up of Hardened Steel, and the chemical composition of described Hardened Steel is as follows: the Si of the C of 0.05 ~ 0.08wt%, 0.20 ~ 1.5wt%, the Mn of 0.30 ~ 1.50wt%, the Cu of the Cr of the Ni of 0.20 ~ 0.50wt%, 2.5 ~ 3.0wt%, 0.10 ~ 0.25wt%, the Al of 0.01 ~ 0.05wt%, the Mo of 0.01 ~ 0.05wt%, the Zr of the Ti of the N of 0.005 ~ 0.015wt%, 0.02 ~ 0.10wt%, 0.002 ~ 0.005wt%; Surplus is Fe and inevitable impurity.
Wherein, [Cu], [Ni], [Mo] and [Cr] represent the mass percent of Cu, Ni, Mo, Cr respectively, and they meet with lower inequality: 2.5 [Cu]+1.2 [Ni]+4.9 [Mo]+1.1 [Cr] >=3.4.
Wherein, described spheroid, through forging molding, is then heated to 800 ~ 850 DEG C of insulation 30 ~ 60min, air-cooled; Then carry out high-temperature carburizing at 1000 ~ 1050 DEG C, carbon potential is 0.6 ~ 0.8wt%, and carburizing time is 1.5 ~ 2.0 hours, then in temperature is to quench in the oil of 100 ~ 150 DEG C; Then carry out temper at 250 ~ 320 DEG C, the temper time is 1.5 ~ 2.5 hours.
Wherein, described spherome surface and sealing surface of seat surface are all formed with low friction hard coat.
Wherein, the Tungsten carbite consisting of 10.0 ~ 15.0wt% of described low friction hard coat, the molybdenum disulfide of 3.0 ~ 5.0wt%, the aluminium of 12.0 ~ 15.0wt%, the chromium of 10.0 ~ 12.0wt%, the zirconium of 0.1 ~ 1.0wt%, and the nickel of surplus.
Cryogenic ball valve of the present invention has following beneficial effect:
Cryogenic ball valve of the present invention, can the opening and closing of reliable and secure ground control valve by turbine and the transmission of fan tooth section; And by cure process and specific coating process, make described ball valve low temperature resistant, shock-resistant, and good airproof performance, structural safety is reliable.
Accompanying drawing explanation
Fig. 1 is the cross section structure schematic diagram of cryogenic ball valve of the present invention.
Fig. 2 is the cross section structure schematic diagram of driver part in cryogenic ball valve.
Embodiment
Below with reference to specific embodiment, cryogenic ball valve of the present invention is further elaborated, has more complete, accurate and deep understanding to help those skilled in the art to inventive concept of the present invention, technological scheme.
Embodiment 1
As shown in accompanying drawing 1 ~ 2, the cryogenic ball valve described in the present embodiment, comprises valve body 10, spheroid 20 and driver part 30.Wherein, the fluid passage 12 that described valve body 10 comprises valve seat 11 and is positioned at above valve seat, described fluid passage 12 has the fluid input 13 being positioned at one end and the fluid output 14 being positioned at the other end; Described spheroid 20 is positioned at described fluid passage 12, and described spheroid 20 is arranged on to contact on described valve seat 11 and with described valve seat 11 and forms sealing surface of seat 15.Described spheroid 20 comprises a crosspassage 21, and when making the axial alignment of the axis of described crosspassage and described fluid passage by rotating described spheroid, then described fluid input, fluid output are in maximum flow state; When rotating described spheroid and making the axis of the axis of described crosspassage and described fluid passage angled, then reduce or be closed the fluid discharge value between fluid input and fluid output.Described driver part 30 comprises live axle 31, fan tooth section 32 and turbine 33; The end of described live axle 31 is installed and is fastened on the upper end of described spheroid 20, and the lower end of described spheroid 20 is arranged on described valve seat 11 by swivel bolt 16; Described fan tooth section 32 is arranged on the top of described live axle 31 upper end by bolt; Described turbine 33 drives described fan tooth section 32, and then drive described live axle 31 to rotate, and then drive spheroid 20 rotate around the central shaft of swivel bolt 16 and realize unlatching or the closedown of valve, and described turbine can be driven by motor (not shown).In the present embodiment, described live axle is 1Cr18Ni9Ti Austenitic Stainless Steel.Described live axle, 980 ~ 1050 DEG C of solution treatment 0.5 ~ 1.0 hour, after solution treatment below water-cooled to 350 DEG C, then carries out stabilizing treatment at 850 ~ 880 DEG C.Described spheroid is made up of Hardened Steel, and described spherome surface and sealing surface of seat surface are all formed with low friction hard coat.
Embodiment 2
In the present embodiment, in order to give the mechanical system energy of described spheroid in low temperature environment, especially cold-hot impacts and the mechanical property such as low temperature is hot, and described spheroid adopts Hardened Steel forging to form.The chemical composition of described Hardened Steel is as follows: the C of 0.05 ~ 0.08wt%, the Si of 0.20 ~ 1.5wt%, the Mn of 0.30 ~ 1.50wt%, the Cu of the Cr of the Ni of 0.20 ~ 0.50wt%, 2.5 ~ 3.0wt%, 0.10 ~ 0.25wt%, the Al of 0.01 ~ 0.05wt%, the Mo (being preferably 0.01 ~ 0.02wt%) of 0.01 ~ 0.05wt%, the Zr of the Ti of the N of 0.005 ~ 0.015wt%, 0.02 ~ 0.10wt%, 0.002 ~ 0.005wt%; Surplus is Fe and inevitable impurity.Wherein, [Cu], [Ni], [Mo] and [Cr] represent the mass percent of Cu, Ni, Mo, Cr respectively, and they meet with lower inequality: 2.5 [Cu]+1.2 [Ni]+4.9 [Mo]+1.1 [Cr] >=3.4.
Described spheroid, through forging molding, is then heated to 800 ~ 850 DEG C of insulation 30 ~ 60min, air-cooled; Then carry out high-temperature carburizing at 1000 ~ 1050 DEG C, carbon potential is 0.6 ~ 0.8wt%, and carburizing time is 1.5 ~ 2.0 hours, then in temperature is to quench in the oil of 100 ~ 150 DEG C; Then carry out temper at 250 ~ 320 DEG C, the temper time is 1.5 ~ 2.5 hours.Hardened Steel described in the present embodiment is when the composition of Cu, Ni, Mo, Cr meets 2.5 [Cu]+1.2 [Ni]+4.9 [Mo]+1.1 [Cr] >=3.4, not only make carbide and a small amount of nitride separate out by Carburization Treatment and create invigoration effect, make the surface hardness of Hardened Steel high, and internal toughness is good, there is excellent opposing cold cycling and the performance of thermal shock.
Embodiment 3
In the present embodiment, described spherome surface and sealing surface of seat surface are all formed with low friction hard coat, and described low friction hard coat needs to have high hardness, low coefficient of friction concurrently, to realize the good running of spheroid while guarantee sealing.The Tungsten carbite consisting of 10.0 ~ 15.0wt% of described low friction hard coat, the molybdenum disulfide of 3.0 ~ 5.0wt%, the aluminium of 12.0 ~ 15.0wt%, the chromium of 10.0 ~ 12.0wt%, the zirconium of 0.1 ~ 1.0wt%, and the nickel of surplus; The thickness of coating is generally 10 ~ 200 μm, is preferably 20 ~ 100 μm.Above-mentioned coating adopts powder stock, and makes the powder diameter of aluminium in powder stock, chromium, zirconium and nickel be less than 10 μm by inert atmosphere ball milling, and the particle diameter of molybdenum disulfide silicon and Tungsten carbite is 10 ~ 20 μm.Then utilize HVAF system to spray, the powder feeding gas of use is N 2.The process parameter of HVOF spraying is: O 2pressure is 0.50 ~ 0.60MPa, O 2flow is 10.0 ~ 15.0m 3/ h; N 2pressure 0.50 ~ 0.55MPa, N 2flow be 11.5 ~ 13.0m 3/ h; Spray distance is 250 ~ 260mm; Be under the hypoxic atmosphere of 100 ~ 1000Pa at oxygen partial pressure after spraying, carry out oxidizing thermal treatment in 800 ~ 850 DEG C, heat treatment time is 1.5 ~ 2.0 hours.Spray the hardness HV of the abrasion-resistant hardcoat obtained 0.1can 1360 ± 105 be reached.In addition, by showing the cold cycling of-50 DEG C to 100 DEG C, the low friction hard coat with the present embodiment composition can not generate the crackle being greater than more than 20 μm substantially, and described hard coat surface roughness can control to less than 0.1 μm, there is excellent low friction performance, the good operation of the ball valve when operating can being ensured.
For the ordinary skill in the art; specific embodiment is just to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technological scheme is carried out; or design of the present invention and technological scheme directly applied to other occasion, all within protection scope of the present invention without to improve.

Claims (9)

1. a cryogenic ball valve, comprises valve body and spheroid, it is characterized in that: described valve body comprises valve seat and is positioned at the fluid passage above valve seat, and described fluid passage has the fluid input being positioned at one end and the fluid output being positioned at the other end; Described spheroid is positioned at described fluid passage, and described spheroid is arranged on the formation sealing surface of seat that to contact on described valve seat and with described valve seat; Described spheroid comprises a crosspassage, and when making the axial alignment of the axis of described crosspassage and described fluid passage by rotating described spheroid, then described fluid input, fluid output are in maximum flow state; When rotating described spheroid and making the axis of the axis of described crosspassage and described fluid passage angled, then reduce or be closed the fluid discharge value between fluid input and fluid output.
2. cryogenic ball valve according to claim 1, is characterized in that: described cryogenic ball valve also comprises driver part, and described driver part comprises live axle, fan tooth section and turbine; Described driving the tip of the axis is installed and is fastened on the upper end of described spheroid, and the lower end of described spheroid is arranged on described valve seat by swivel bolt; Described fan tooth section is arranged on the top of described live axle upper end by bolt; Described turbine drives described fan tooth section, and then drives described live axle to rotate, and then drives spheroid to rotate with the unlatching or the closedown that realize valve.
3. cryogenic ball valve according to claim 2, is characterized in that: described live axle is 1Cr18Ni9Ti Austenitic Stainless Steel.
4. cryogenic ball valve according to claim 3, is characterized in that: described live axle, 980 ~ 1050 DEG C of solution treatment 0.5 ~ 1.0 hour, after solution treatment below water-cooled to 350 DEG C, then carries out stabilizing treatment at 850 ~ 880 DEG C.
5. cryogenic ball valve according to claim 1, it is characterized in that: described spheroid is made up of Hardened Steel, the chemical composition of described Hardened Steel is as follows: the Si of the C of 0.05 ~ 0.08wt%, 0.20 ~ 1.5wt%, the Mn of 0.30 ~ 1.50wt%, the Cu of the Cr of the Ni of 0.20 ~ 0.50wt%, 2.5 ~ 3.0wt%, 0.10 ~ 0.25wt%, the Al of 0.01 ~ 0.05wt%, the Mo of 0.01 ~ 0.05wt%, the Zr of the Ti of the N of 0.005 ~ 0.015wt%, 0.02 ~ 0.10wt%, 0.002 ~ 0.005wt%; Surplus is Fe and inevitable impurity.
6. cryogenic ball valve according to claim 5, it is characterized in that: [Cu], [Ni], [Mo] and [Cr] represent the mass percent of Cu, Ni, Mo, Cr respectively, and they meet with lower inequality: 2.5 [Cu]+1.2 [Ni]+4.9 [Mo]+1.1 [Cr] >=3.4.
7. cryogenic ball valve according to claim 5, is characterized in that: described spheroid, through forging molding, is then heated to 800 ~ 850 DEG C of insulation 30 ~ 60min, air-cooled; Then carry out high-temperature carburizing at 1000 ~ 1050 DEG C, carbon potential is 0.6 ~ 0.8wt%, and carburizing time is 1.5 ~ 2.0 hours, then in temperature is to quench in the oil of 100 ~ 150 DEG C; Then carry out temper at 250 ~ 320 DEG C, the temper time is 1.5 ~ 2.5 hours.
8. cryogenic ball valve according to claim 1, is characterized in that: described spherome surface and sealing surface of seat surface are all formed with low friction hard coat.
9. cryogenic ball valve according to claim 1, it is characterized in that: the Tungsten carbite consisting of 10.0 ~ 15.0wt% of described low friction hard coat, the molybdenum disulfide of 3.0 ~ 5.0wt%, the aluminium of 12.0 ~ 15.0wt%, the chromium of 10.0 ~ 12.0wt%, the zirconium of 0.1 ~ 1.0wt%, and the nickel of surplus.
CN201510409771.0A 2015-07-13 2015-07-13 Cryogenic ball valve Active CN104948765B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105485386A (en) * 2015-12-31 2016-04-13 平湖市瑞阳精密机械有限公司 Low-temperature pressure reducer
CN108302215A (en) * 2018-04-08 2018-07-20 江苏圣泰阀门有限公司 Ultralow temperature plug valve
EP3628899A1 (en) * 2018-09-26 2020-04-01 Johnson Electric International AG Valve
CN111561604A (en) * 2020-05-20 2020-08-21 王善波 Valve with constant temperature function

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201133511Y (en) * 2007-12-24 2008-10-15 高友 Valve manual drive apparatus
CN101403076A (en) * 2008-11-14 2009-04-08 钢铁研究总院 Composite reinforced high-ductility ultrahigh-strength secondary hardening steel
CN202274191U (en) * 2011-10-10 2012-06-13 株洲西迪硬质合金科技有限公司 Valve and valve rod thereof
US20130240772A1 (en) * 2010-09-10 2013-09-19 Xamol Limited Valve assembly and components therefore
CN204153203U (en) * 2014-09-29 2015-02-11 浙江成高阀门有限公司 Upper dress cryogenic ball valve

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201133511Y (en) * 2007-12-24 2008-10-15 高友 Valve manual drive apparatus
CN101403076A (en) * 2008-11-14 2009-04-08 钢铁研究总院 Composite reinforced high-ductility ultrahigh-strength secondary hardening steel
US20130240772A1 (en) * 2010-09-10 2013-09-19 Xamol Limited Valve assembly and components therefore
CN202274191U (en) * 2011-10-10 2012-06-13 株洲西迪硬质合金科技有限公司 Valve and valve rod thereof
CN204153203U (en) * 2014-09-29 2015-02-11 浙江成高阀门有限公司 Upper dress cryogenic ball valve

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105485386A (en) * 2015-12-31 2016-04-13 平湖市瑞阳精密机械有限公司 Low-temperature pressure reducer
CN105485386B (en) * 2015-12-31 2018-08-17 平湖市瑞阳精密机械有限公司 A kind of low-temperature reduced-pressure device
CN108302215A (en) * 2018-04-08 2018-07-20 江苏圣泰阀门有限公司 Ultralow temperature plug valve
CN108302215B (en) * 2018-04-08 2018-12-28 江苏圣泰阀门有限公司 Ultralow temperature plug valve
EP3628899A1 (en) * 2018-09-26 2020-04-01 Johnson Electric International AG Valve
CN110953368A (en) * 2018-09-26 2020-04-03 广东德昌电机有限公司 Valve gate
CN111561604A (en) * 2020-05-20 2020-08-21 王善波 Valve with constant temperature function

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