WO2015010381A1 - 超高温硬密封球阀 - Google Patents

超高温硬密封球阀 Download PDF

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Publication number
WO2015010381A1
WO2015010381A1 PCT/CN2013/086183 CN2013086183W WO2015010381A1 WO 2015010381 A1 WO2015010381 A1 WO 2015010381A1 CN 2013086183 W CN2013086183 W CN 2013086183W WO 2015010381 A1 WO2015010381 A1 WO 2015010381A1
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WO
WIPO (PCT)
Prior art keywords
valve
high temperature
stem
bellows
ball
Prior art date
Application number
PCT/CN2013/086183
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English (en)
French (fr)
Inventor
杨荣水
杨选荣
杨选文
黄美林
黄爱义
李永喜
李华贵
金虎
王忠渊
南飞
Original Assignee
浙江石化阀门有限公司
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Application filed by 浙江石化阀门有限公司 filed Critical 浙江石化阀门有限公司
Priority to US14/905,955 priority Critical patent/US9447898B1/en
Publication of WO2015010381A1 publication Critical patent/WO2015010381A1/zh

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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
    • F16K49/00—Means in or on valves for heating or cooling
    • F16K49/005—Circulation means for a separate heat transfer fluid
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
    • F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
    • 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
    • F16K41/00—Spindle sealings
    • F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
    • F16K41/04—Spindle sealings with stuffing-box ; Sealing rings with at least one ring of rubber or like material between spindle and housing
    • F16K41/043—Spindle sealings with stuffing-box ; Sealing rings with at least one ring of rubber or like material between spindle and housing for spindles which only rotate, i.e. non-rising spindles
    • F16K41/046—Spindle sealings with stuffing-box ; Sealing rings with at least one ring of rubber or like material between spindle and housing for spindles which only rotate, i.e. non-rising spindles 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
    • F16K49/00—Means in or on valves for heating or cooling
    • F16K49/005—Circulation means for a separate heat transfer fluid
    • F16K49/007—Circulation means for a separate heat transfer fluid located within the obturating element
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/6416—With heating or cooling of the system
    • Y10T137/6579—Circulating fluid in heat exchange relationship

Definitions

  • the present invention relates to a valve, and more particularly to an ultra high temperature hard seal ball valve.
  • Ball valves were introduced in the 1950s. With the rapid development of science and technology, the continuous improvement of production technology and product structure has rapidly developed into a major valve category in just 40 years. In western developed countries, the use of ball valves is increasing year by year. In China, ball valves are widely used in petroleum refining, long-distance pipelines, chemical, paper, pharmaceutical, water conservancy, electric power, municipal, steel and other industries. The national economy occupies a pivotal position.
  • the existing hard sealing ball valve has the following advantages: First, wear resistance; since the valve core of the hard sealing ball valve is alloy steel spray welding, the sealing ring is alloy steel surfacing, so the hard sealing ball valve does not generate too much when switching Wear and tear. two.
  • hard-sealed ball valves that is, hard-sealed ball valves can still work normally for a long time under ultra-high temperature.
  • the soft-sealed ball valve exceeds 250°, the sealing ring Or the seal seat is prone to leakage.
  • the existing hard-sealed ball valve can only work below 550°. It can easily cause deformation of the valve stem and the ball under high temperature or ultra-high temperature conditions.
  • the deformation of the valve stem may cause the worker or the motor to move the valve stem, which is not normal. Opening or closing the sphere has great safety hazards, and the deformation of the sphere easily makes the sealing performance of the product worse, and there is a safety hazard of leakage.
  • the present invention provides an ultra high temperature hard seal ball valve.
  • an ultra-high temperature hard sealing ball valve comprising an upper cover, a valve cover, a valve body, a valve stem and a ball, wherein the valve body is sleeved with a valve seat assembly, and the valve stem passes through
  • the upper cover and the valve cover are connected to the ball body, and a sealing member is disposed between the upper cover and the valve stem, between the valve cover and the valve stem, and the ball body is provided with a medium passage for the medium to circulate,
  • the outer side of the spherical medium passage is surrounded by a closed cooling chamber, and the valve stem is provided with a through hole through which the coolant passes, and the through hole communicates with the cooling chamber.
  • the valve stem includes an upper valve stem and a lower valve stem, the upper valve stem and the spherical body are of a unitary structure, and the lower valve stem is matched with the spherical body.
  • the lower valve stem is provided with a coolant inlet
  • the upper valve stem is provided with a coolant outlet
  • the coolant inlet on the lower valve stem passes through the through hole in the valve stem
  • the cooling chamber is connected to the upper valve stem and provided with a coolant outlet.
  • the ball body is provided with an annular spherical cover plate, and the spherical cover plate and the inner wall of the ball form the closed cooling cavity.
  • the upper cover and the valve cover are provided with cooling passages for circulating coolant, and the cooling passages communicate with the outer wall of the valve stem.
  • the seal is pressed by a disc spring.
  • the valve seat assembly includes a valve seat body, a bellows and a valve seat support, and the valve body is provided with a valve body water inlet hole and a valve body water outlet hole, the valve body
  • the water inlet hole communicates with an annular cooling groove provided on the valve seat support member, and the annular cooling groove communicates with the outside through the outer space of the bellows and the water outlet of the valve body.
  • the bellows includes a first bellows and a second bellows, and the first bellows and the second bellows are respectively connected with a first connecting ring and a second connecting ring.
  • the first connecting ring is in contact with the valve seat body
  • the second connecting ring is connected to the first bellows
  • the annular cooling groove is respectively connected to the inner space of the second bellows and the outer space of the pipe, the first The inner space of the second bellows communicates with the outside through the outer space of the first bellows and the water outlet of the valve body.
  • valve seat body is integrally formed with a high temperature resistant material.
  • the outer surface of the valve body is welded with a jacket, and the jacket forms a receiving cavity with the outer surface of the valve body, and the jacket is provided with a cooling water pipe.
  • the invention has the beneficial effects that a cooling cavity is arranged in the spherical body, a through hole is arranged in the valve stem, and the through hole communicates with the cooling cavity, so that when the invention works under ultra high temperature, the product can be supplied with coolant to avoid the valve.
  • the rod and the sphere work and deform under a long time of ultra-high temperature, thereby ensuring the service life of the product and the performance at work, and having a wider application range.
  • FIG. 1 is a schematic structural view of an embodiment of the present invention.
  • FIG. 2 is an enlarged schematic view of a portion I of FIG. 1.
  • FIG. 3 is an enlarged schematic view of a portion P in FIG. 1.
  • valve seat assembly 61, valve seat body; , bellows; 621, first bellows; 622, second bellows; 623, first connecting ring; 624, second connecting ring; 63, valve seat support; 631, annular cooling groove; 8, cooling channel; 9, disc spring; 10, jacket; 11, housing cavity; 12, cooling water pipe; 13, stem sleeve; 14, lower stem cover; 15, connecting plate.
  • an ultra-high temperature hard sealing ball valve includes an upper cover 1, a valve cover 2, a valve body 3, a valve stem 4 and a ball 5, and the valve body 3 is sleeved with a valve seat.
  • the valve body comprises a left valve body and a right valve body, and the left and right valve bodies are fixed by bolts.
  • the valve stem 4 is sequentially connected to the ball 5 through the upper cover 1 and the valve cover 2, and a sealing member 7 is disposed between the upper cover 1 and the valve stem 4 and between the valve cover 2 and the valve stem 4.
  • the spherical body 5 is provided with a medium passage 51 through which the medium flows.
  • the outer side of the medium passage 51 of the spherical body 5 is surrounded by a sealed cooling chamber 52.
  • the valve stem 4 is provided with a through hole for the coolant to pass through. 41.
  • the through hole 41 is in communication with the cooling cavity 52.
  • the cooling liquid used in the present invention is cooling water.
  • the spherical body 5 is provided with an annular spherical cover plate 53, and the spherical cover plate 53 and the inner wall of the spherical body 5 form the sealed cooling chamber 52. More specifically, the ball cover 53 is fixed to the ball by welding. Such a structure makes it more convenient to process and produce a cooling chamber.
  • the cooling chamber is annular, and other shapes can of course be used.
  • the cooling cavity is arranged in the spherical body of the invention, the through hole is arranged in the valve stem, and the through hole communicates with the cooling cavity, so that when the invention works under the ultra-high temperature, the coolant can be supplied to the product, and the valve stem and the sphere are avoided.
  • Long-term working deformation under ultra-high temperature thus ensuring the service life of the product and the performance at work, has a wider range of application, the product can work normally for at least 900 ° ultra-high temperature for a long time.
  • the valve stem 4 includes an upper stem 42 and a lower stem 43.
  • the upper stem 42 and the sphere 5 are of a unitary structure, and the lower stem 43 is engaged with the sphere 5.
  • the lower valve stem 43 is provided with a coolant inlet 431, and the upper valve stem 42 is provided with a coolant outlet 421, and the coolant inlet 431 on the lower stem 43 passes through the through hole in the valve stem 4. 41.
  • the cooling chamber 52 is connected to the upper valve stem 42 with a coolant outlet 421.
  • the structure of the upper and lower valve stems makes the disassembly and maintenance of the product very convenient, and the integral structure of the upper valve stem and the ball body makes the product have better strength and at the same time facilitates cooling of the sphere.
  • the cooling water is introduced from the lower valve stem and discharged from the upper valve stem through the cooling chamber on the ball to form a cooling water circulation, thereby ensuring sufficient effective cooling of the ball and the valve stem.
  • the lower portion of the ball body 5 is provided with a valve stem sleeve 13
  • the edge of the valve stem sleeve 13 is outwardly folded
  • the middle portion of the lower valve stem 43 is provided with a boss.
  • the upper cover 1 and the valve cover 2 are respectively provided with a cooling passage 8 through which the coolant flows, and the cooling passage 8 communicates with the outer wall of the valve stem 4. Since the upper stem is long and the cooling water in the stem flows from the lower stem to the upper stem, this structure can further ensure that the stem is reliably cooled, allowing the product to adapt to longer working hours. Is a preferred mode of the invention.
  • the seal 7 is pressed by the disc spring 9. Specifically, one end of the disc spring 9 abuts against the sealing member 7, and the other end abuts against the fixing member of the present invention, such as a sealing member provided on the upper cover, at which time the disc spring is opposed to the connecting plate 15 on the product.
  • the seal is placed on the bonnet, and the disc spring at this time is in contact with the upper cover.
  • the sealing member is sealed by a packing. Such a structure does not require a sealing member and a bolt fastener. Once the sealing member is worn out, the butterfly spring has an automatic compensation function to ensure the sealing of the product.
  • the valve seat assembly 6 includes a valve seat body 61, a bellows 62 and a valve seat support 63.
  • the valve body 3 is provided with a valve body water inlet hole 31 and a valve body water outlet hole 32, the valve body
  • the water inlet hole 31 communicates with an annular cooling groove 631 provided on the valve seat support 63.
  • the annular cooling groove 631 communicates with the outside through the outer space of the bellows 62 and the valve body water outlet hole 32.
  • the bellows provides a pre-tightening force for the valve seat body. When the ball is heated and expanded, the valve seat can compress the bellows to avoid biting the sealing surface and ensure the sealing performance of the product.
  • the annular cooling tank is arranged to cool the bellows to ensure that the valve seat assembly can work normally under ultra-high temperature.
  • the bellows 62 includes a first bellows 621 and a second bellows 622, and the first bellows 621 and the second bellows 622 are respectively connected with a first connecting ring 623 and a second connection.
  • the ring 624, the first connecting ring 623 is in contact with the valve seat body 61, the second connecting ring 624 is connected to the first bellows 621, and the annular cooling groove 631 is respectively in the inner space of the second bellows 622.
  • the inner space of the second bellows 622 communicates with the outside through the outer space of the first bellows 621 and the valve body water outlet 32.
  • the setting of the two sets of bellows makes the pre-tightening force of the valve seat body larger during installation, and after the work, even if the ball is heated and expanded, the range of the compressed bellows of the valve seat body is larger, so that the sealing performance of the product is better, and the use is good.
  • Longer life, and the space inside the valve seat assembly facilitates the circulation of cooling water, which can cool the valve seat assembly and further improve the long-term working ability of the product at high temperatures.
  • the valve seat body 61 is integrally formed with a high temperature resistant material.
  • the valve seat body is made of GH3128 high-temperature alloy steel, so that the valve seat body has better high temperature resistance, and the valve seat body is prevented from being deformed, thereby causing leakage.
  • the outer surface of the valve body 3 is welded with a jacket 10, and the jacket 10 and the outer surface of the valve body 3 form an accommodating cavity 11, and the jacket 10 is provided with a cooling water pipe 12.
  • the left and right valve bodies are provided with a jacket 10 and a cooling water pipe.
  • Such a structure can cool the valve body, so that the surface temperature of the valve body is less than 100°, making the product more suitable for super Work at high temperatures for a long time while avoiding high temperature accidental injury to workers.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Details Of Valves (AREA)
  • Taps Or Cocks (AREA)

Abstract

一种超高温硬密封球阀，包括上盖（1）、阀盖（2）、阀体（3）、阀杆（4）和球体（5），阀体（3）内套设有阀座组件（6），阀杆（4）依次穿过上盖（1）、阀盖（2）与球体（5）相连接，上盖（1）与阀杆（4）之间、阀盖（2）与阀杆（4）之间均设有密封件（7），球体（5）内设有供介质流通的介质通道（51），球体（5）介质通道（51）的外侧环绕有密闭的冷却腔（52），阀杆（4）内设有供冷却液通过的通孔（41），通孔（41）与冷却腔（52）相连通。该球阀在超高温下工作时，可以给阀杆和球体通冷却液，避免阀杆和球体在长时间的超高温下工作变形，从而保证了产品的使用寿命和性能。

Description

超高温硬密封球阀
技术领域
[0001] 本发明涉及一种阀门，具体涉及一种超高温硬密封球阀。
背景技术
[0002] 球阀问世于20世纪50年代，随着科学技术的飞速发展，生产工艺及产品结构的不断改进，在短短的40年时间里，已迅速发展成为一种主要的阀类。在西方工业发达的国家，球阀的使用正在逐年不断的上升，在我国，球阀被广泛的应用在石油炼制、长输管线、化工、造纸、制药、水利、电力、市政、钢铁等行业，在国民经济中占有举足轻重的地位。现有的硬密封球阀存在以下几点优点：一、耐磨；由于硬密封球阀的阀芯是合金钢喷焊，密封圈是合金钢堆焊，所以硬密封球阀在开关时不会产生太大的磨损。二．使用寿命长，适用范围广,已广泛应用于石油、化工、发电、造纸、原子能、航空、火箭等各部门，以及人们日常生活中。但是随着社会的发展和科技的进步，对硬密封球阀提出了更高的要求，即要求硬密封球阀能在超高温下仍能正常的长期工作，软密封球阀在超过250°时，密封圈或者密封座就容易出现泄漏。现有的硬密封球阀最高也只能在550°以下工作，在高温或者超高温情况下工作容易引起阀杆和球体变形，阀杆的变形存在工作人员或者电机不能带动阀杆运动，从而不能正常开启或者关闭球体，存在极大的安全隐患，而球体的变形容易使得产品的密封性能变差，存在泄漏的安全隐患。
发明内容
[0003] 为解决背景技术中现有的硬密封球阀不能在超高温下长时间工作的问题，本发明提供一种超高温硬密封球阀。
[0004] 本发明的技术方案是：一种超高温硬密封球阀，包括上盖、阀盖、阀体、阀杆和球体，所述的阀体内套设有阀座组件，所述的阀杆依次穿过上盖、阀盖与球体相连接，所述的上盖与阀杆之间、阀盖与阀杆之间均设有密封件，所述的球体内设有供介质流通的介质通道，所述球体介质通道的外侧环绕有密闭的冷却腔，所述的阀杆内设有供冷却液通过的通孔，所述通孔与冷却腔相连通。
[0005] 作为本发明的一种改进，所述的阀杆包括上阀杆和下阀杆，所述的上阀杆与球体为一体式结构，所述的下阀杆与球体相配合。
[0006] 作为本发明的进一步改进，所述的下阀杆上设有冷却液进口，所述的上阀杆上设有冷却液出口，所述下阀杆上的冷却液进口通过阀杆上的通孔、冷却腔与上阀杆上设有冷却液出口相连通。
[0007] 作为本发明的进一步改进，所述的球体内设有环形的球体盖板，所述的球体盖板与球体内壁形成所述的密闭冷却腔。
[0008] 作为本发明的进一步改进，所述的上盖和阀盖上均设有供冷却液流通的冷却通道，所述的冷却通道与阀杆外壁相连通。
[0009] 作为本发明的进一步改进，所述的密封件通过碟簧压紧。
[0010] 作为本发明的进一步改进，所述的阀座组件包括阀座本体、波纹管和阀座支撑件，所述的阀体上设有阀体进水孔和阀体出水孔，所述的阀体进水孔与阀座支撑件上设有的环形冷却槽相连通，所述的环形冷却槽通过波纹管的外部空间、阀体出水孔与外界相连通。
[0011] 作为本发明的进一步改进，所述的波纹管包括第一波纹管和第二波纹管，所述的第一波纹管和第二波纹管上分别连接有第一连接环和第二连接环，所述第一连接环与阀座本体相贴合，第二连接环与第一波纹管相连接，所述的环形冷却槽分别于第二波纹管的管内空间和管外空间相连通，所述第二波纹管的管内空间通过第一波纹管的外部空间、阀体出水孔与外界相连通。
[0012] 作为本发明的进一步改进，所述的阀座本体采用耐高温材料一体成型。
[0013] 作为本发明的进一步改进，所述阀体的外表面焊接有夹套，所述的夹套与阀体外表面之间形成容置腔，所述的夹套上设有冷却水管。
[0014] 本发明的有益效果是，在球体内设置了冷却腔，阀杆内设置了通孔，且通孔和冷却腔相通，使得本发明在超高温下工作时，可以给产品通冷却液，避免阀杆和球体在长时间的超高温下工作变形，从而保证了产品的使用寿命和工作时的性能，有更广的适用范围。
附图说明
[0015] 附图1为本发明实施例的结构示意图。
[0016] 附图2为附图1中I处的放大示意图。
[0017] 附图3为附图1中P处的放大示意图。
[0018] 图中，1、上盖；2、阀盖；3、阀体；31、阀体进水孔；32、阀体出水孔；4、阀杆；41、通孔；42、上阀杆；421、冷却液出口；43、下阀杆；431、冷却液进口；5、球体；51、介质通道；52、冷却腔；53、球体盖板；6、阀座组件；61、阀座本体；62、波纹管；621、第一波纹管；622、第二波纹管；623、第一连接环；624、第二连接环；63、阀座支撑件；631、环形冷却槽；7、密封件；8、冷却通道；9、碟簧；10、夹套；11、容置腔；12、冷却水管；13、阀杆套；14、下阀杆盖；15、连接盘。
具体实施方式
[0019] 下面结合附图对本发明实施例作进一步说明：
由图1结合2、3所示，一种超高温硬密封球阀，包括上盖1、阀盖2、阀体3、阀杆4和球体5，所述的阀体3内套设有阀座组件6，通常为了便于产品的安装，所述的阀体3为分体式结构，通常阀体包括左阀体和右阀体，左、右阀体通过螺栓固接。所述的阀杆4依次穿过上盖1、阀盖2与球体5相连接，所述的上盖1与阀杆4之间、阀盖2与阀杆4之间均设有密封件7，所述的球体5内设有供介质流通的介质通道51，所述球体5介质通道51的外侧环绕有密闭的冷却腔52，所述的阀杆4内设有供冷却液通过的通孔41，所述通孔41与冷却腔52相连通。本发明采用的冷却液为冷却水。具体的说，所述的球体5内设有环形的球体盖板53，所述的球体盖板53与球体5内壁形成所述的密闭冷却腔52。更具体的说，球体盖板53采用焊接与球体相固定。这样的结构使得加工生产冷却腔更方便，通常冷却腔为环形，当然也可以采用其他形状。本发明的在球体内设置了冷却腔，阀杆内设置了通孔，且通孔和冷却腔相通，使得本发明在超高温下工作时，可以给产品通冷却液，避免阀杆和球体在长时间的超高温下工作变形，从而保证了产品的使用寿命和工作时的性能，有更广的适用范围，本产品能在至少900°超高温下长时间正常工作。
[0020] 所述的阀杆4包括上阀杆42和下阀杆43，所述的上阀杆42与球体5为一体式结构，所述的下阀杆43与球体5相配合。所述的下阀杆43上设有冷却液进口431，所述的上阀杆42上设有冷却液出口421，所述下阀杆43上的冷却液进口431通过阀杆4上的通孔41、冷却腔52与上阀杆42上设有冷却液出口421相连通。上、下阀杆的结构使得产品的拆装、维修很方便，而且上阀杆与球体为一体式结构使得产品的强度比较好，同时方便冷却球体。本发明中，冷却水是从下阀杆通入，经球体上的冷却腔从上阀杆排出，从而形成冷却水循环，保证能对球体和阀杆进行足够有效的冷却。具体的说，球体5的下部设有阀杆套13，阀杆套13的边沿向外折出，下阀杆43的中部设有凸台，安装时，下阀杆43穿过阀体3，其凸台部与阀体3相卡，此时阀杆套13的边沿与球体相卡，下阀杆43通过螺丝和下阀杆盖14固定，完成下阀杆43的安装。
[0021] 所述的上盖1和阀盖2上均设有供冷却液流通的冷却通道8，所述的冷却通道8与阀杆4外壁相连通。由于上阀杆较长，而阀杆内的冷却水又是从下阀杆流到上阀杆的，所以这样的结构能进一步的保证阀杆被可靠冷却，使得产品能适应较长时间的工作，为本发明的优选方式。
[0022] 所述的密封件7通过碟簧9压紧。具体的说，碟簧9的一端与密封件7相抵，另外一端与本发明上的固定件相抵，如设置在上盖上的密封件，此时碟簧是与产品上的连接盘15相抵，而设置在阀盖上的密封件，此时的碟簧是与上盖相抵。通常在本发明中密封件采用填料密封，这样的结构不需要密封件压盖和螺栓紧固件，一旦密封件损耗，蝶簧有自动补偿功能，保证产品的密封。
[0023] 所述的阀座组件6包括阀座本体61、波纹管62和阀座支撑件63，所述的阀体3上设有阀体进水孔31和阀体出水孔32，所述的阀体进水孔31与阀座支撑件63上设有的环形冷却槽631相连通，所述的环形冷却槽631通过波纹管62的外部空间、阀体出水孔32与外界相连通。波纹管为阀座本体提供预紧力，当球体受热膨胀时，阀座可压缩波纹管，以免咬伤密封面，保证了产品的密封性能。同时环形冷却槽的设置能对波纹管进行冷却，保证在超高温下阀座组件能正常工作。
[0024] 具体的说，所述的波纹管62包括第一波纹管621和第二波纹管622，所述的第一波纹管621和第二波纹管622上分别连接有第一连接环623和第二连接环624，所述第一连接环623与阀座本体61相贴合，第二连接环624与第一波纹管621相连接，所述的环形冷却槽631分别于第二波纹管622的管内空间和管外空间相连通，所述第二波纹管622的管内空间通过第一波纹管621的外部空间、阀体出水孔32与外界相连通。两组波纹管的设置使得安装时对阀座本体的预紧力更大，而工作后，即使球体受热膨胀，阀座本体的压缩波纹管的范围更大，使得产品的密封性能更好，使用寿命更长，而且阀座组件内的空间能方便冷却水的流通，可以对阀座组件进行冷却，进一步提高产品在高温下的长时间工作能力。
[0025] 所述的阀座本体61采用耐高温材料一体成型。具体的说所述的阀座本体采用GH3128高温合金钢制成，使得阀座本体有更好的耐高温性能，避免阀座本体变形，从而引起的泄漏。
[0026] 所述阀体3的外表面焊接有夹套10，所述的夹套10与阀体3外表面之间形成容置腔11，所述的夹套10上设有冷却水管12。具体的说，在本发明中，左、右阀体上均设置有夹套10及冷却水管，这样的结构能对阀体进行冷却，使得阀体表面温度小于100°，使得产品更适合在超高温下长时间工作，同时避免高温误伤工作人员。
[0027] 各位技术人员须知：虽然本发明已按照上述具体实施方式做了描述，但是本发明的发明思想并不仅限于此实用新型，任何运用本发明思想的改装，都将纳入本专利专利权保护范围内。

Claims (10)

  1. 一种超高温硬密封球阀，包括上盖（1）、阀盖（2）、阀体（3）、阀杆（4）和球体（5），所述的阀体（3）内套设有阀座组件（6），所述的阀杆（4）依次穿过上盖（1）、阀盖（2）与球体（5）相连接，所述的上盖（1）与阀杆（4）之间、阀盖（2）与阀杆（4）之间均设有密封件（7），所述的球体（5）内设有供介质流通的介质通道（51），其特征在于:所述球体（5）介质通道（51）的外侧环绕有密闭的冷却腔（52），所述的阀杆（4）内设有供冷却液通过的通孔（41），所述通孔（41）与冷却腔（52）相连通。
  2. 根据权利要求1所述的超高温硬密封球阀，其特征在于所述的阀杆（4）包括上阀杆（42）和下阀杆（43），所述的上阀杆（42）与球体（5）为一体式结构，所述的下阀杆（43）与球体（5）相配合。
  3. 根据权利要求2所述的超高温硬密封球阀，其特征在于所述的下阀杆（43）上设有冷却液进口（431），所述的上阀杆（42）上设有冷却液出口（421），所述下阀杆（43）上的冷却液进口（431）通过阀杆（4）上的通孔（41）、冷却腔（52）与上阀杆（42）上设有冷却液出口（421）相连通。
  4. 根据权利要求1所述的超高温硬密封球阀，其特征在于所述的球体（5）内设有环形的球体盖板（53），所述的球体盖板（53）与球体（5）内壁形成所述的密闭冷却腔（52）。
  5. 根据权利要求1所述的超高温硬密封球阀，其特征在于所述的上盖（1）和阀盖（2）上均设有供冷却液流通的冷却通道（8），所述的冷却通道（8）与阀杆（4）外壁相连通。
  6. 根据权利要求1所述的超高温硬密封球阀，其特征在于所述的密封件（7）通过碟簧（9）压紧。
  7. 根据权利要求1所述的超高温硬密封球阀，其特征在于所述的阀座组件（6）包括阀座本体（61）、波纹管（62）和阀座支撑件（63），所述的阀体（3）上设有阀体进水孔（31）和阀体出水孔（32），所述的阀体进水孔（31）与阀座支撑件（63）上设有的环形冷却槽（631）相连通，所述的环形冷却槽（631）通过波纹管（62）的外部空间、阀体出水孔（32）与外界相连通。
  8. 根据权利要求7所述的超高温硬密封球阀，其特征在于所述的波纹管（62）包括第一波纹管（621）和第二波纹管（622），所述的第一波纹管（621）和第二波纹管（622）上分别连接有第一连接环（623）和第二连接环（624），所述第一连接环（623）与阀座本体（61）相贴合，第二连接环（624）与第一波纹管（621）相连接，所述的环形冷却槽（631）分别于第二波纹管（622）的管内空间和管外空间相连通，所述第二波纹管（622）的管内空间通过第一波纹管（621）的外部空间、阀体出水孔（32）与外界相连通。
  9. 根据权利要求5所述的超高温硬密封球阀，其特征在于所述的阀座本体（61）采用耐高温材料一体成型。
  10. 根据权利要求1所述的超高温硬密封球阀，其特征在于所述阀体（3）的外表面焊接有夹套（10），所述的夹套（10）与阀体（3）外表面之间形成容置腔（11），所述的夹套（10）上设有冷却水管（12）。
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