CN116085489A - Small-caliber top-mounted low-temperature fixed ball valve - Google Patents

Small-caliber top-mounted low-temperature fixed ball valve Download PDF

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Publication number
CN116085489A
CN116085489A CN202111314060.7A CN202111314060A CN116085489A CN 116085489 A CN116085489 A CN 116085489A CN 202111314060 A CN202111314060 A CN 202111314060A CN 116085489 A CN116085489 A CN 116085489A
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valve
ball
small
ball valve
mounted low
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CN202111314060.7A
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CN116085489B (en
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李锤
杨雪华
陆佳杰
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CNNC Sufa Technology Industry Co Ltd
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CNNC Sufa Technology Industry Co Ltd
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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
    • F16K5/0626—Easy mounting or dismounting means
    • F16K5/0636—Easy mounting or dismounting means the spherical plug being insertable from the top of the housing
    • 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
    • F16K5/0663—Packings
    • F16K5/0694—Spindle sealings
    • 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
    • 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
    • F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
    • F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
    • F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug

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

Abstract

The invention belongs to the technical field of ball valves, and relates to a small-caliber top-mounted low-temperature fixed ball valve. The utility model provides a fixed ball valve of small-bore top-mounted formula low temperature, includes valve body, valve gap, advances, export disk seat subassembly, spheroid, valve rod, and the valve gap is located the valve body top, and the spheroid is located valve body passageway center department, advances, exports end disk seat subassembly and includes graphite rope and soft disk seat, and disk seat subassembly and valve body link up, and the soft disk seat in the disk seat subassembly is connected with the spheroid, and the valve rod passes the valve gap and is connected with the spheroid. The invention has the remarkable effects that: the ball body and the upper and lower cylindrical shafts are designed into a whole, so that the problem that the strength of the ball body is affected due to the fact that a pivot is inserted into an opening on the ball body of the small-caliber fixed ball valve to fix the ball body is solved. The design of the upper and lower cylindrical shafts of the integrated ball is beneficial to ensuring the coaxiality on the vertical axis, the ball is well fixed under the action of medium pressure, the sealing effect of the valve can be improved, and the torque of the valve is reduced.

Description

一种小口径顶装式低温固定球阀A small-diameter top-mounted low-temperature fixed ball valve

技术领域technical field

本发明属于球阀技术领域，涉及一种小口径顶装式低温固定球阀。The invention belongs to the technical field of ball valves, and relates to a small-diameter top-mounted low-temperature fixed ball valve.

背景技术Background technique

球阀是启闭件(球体)随阀杆带动绕阀体竖直轴线旋转，以实现开关动作的阀门。固定球阀球体通过上下轴承固定，阀座在介质压力下浮动与球体紧贴实现密封。按阀门安装方式分类，球阀主要有侧装式和顶装式结构，顶装式结构球阀外漏点少，可以在线维修内部密封件，用于低温介质的顶装式固定球阀即为顶装式低温固定球阀。The ball valve is a valve in which the opening and closing part (ball) is driven by the valve stem to rotate around the vertical axis of the valve body to realize the switching action. The sphere of the fixed ball valve is fixed by the upper and lower bearings, and the valve seat floats under the pressure of the medium and is tightly attached to the sphere to achieve sealing. Classified according to the valve installation method, ball valves mainly have side-mounted and top-mounted structures. Top-mounted structure ball valves have less external leakage points and can be repaired on-line for internal seals. Top-mounted fixed ball valves for low-temperature media are top-mounted. Cryogenic fixed ball valve.

目前，顶装式低温固定球阀在工程上用途广泛，市场上现有的小口径(阀门通道小于49mm)顶装式固定球阀结构复杂，不易在线拆装，因此需要一种小口径顶装式低温固定球阀。At present, the top-mounted low-temperature trunnion ball valve is widely used in engineering. The existing small-caliber (valve channel less than 49mm) top-mounted trunnion ball valve has a complex structure and is not easy to disassemble online. Therefore, a small-bore top-mounted cryogenic Fixed ball valve.

发明内容Contents of the invention

本发明针对现有技术的缺陷，提供一种小口径顶装式低温固定球阀。Aiming at the defects of the prior art, the invention provides a small-diameter top-mounted low-temperature fixed ball valve.

本发明是这样实现的：一种小口径顶装式低温固定球阀，包括阀体、阀盖、进、出口阀座组件、球体、阀杆，阀盖位于阀体上方，球体位于阀体通道中心处，进、出口端阀座组件包括石墨绳和软阀座，阀座组件和阀体衔接，阀座组件中的软阀座与球体连接，阀杆穿过阀盖与球体连接。The present invention is achieved in the following way: a small-diameter top-mounted low-temperature fixed ball valve, including a valve body, a valve cover, inlet and outlet valve seat assemblies, a ball, and a valve stem. The valve cover is located above the valve body, and the ball is located in the center of the valve body channel The inlet and outlet valve seat components include graphite rope and soft valve seat, the valve seat component is connected with the valve body, the soft valve seat in the valve seat component is connected with the ball, and the valve stem passes through the valve cover to connect with the ball.

所述碟形弹簧位于阀体与阀座组件之间；阀体与阀盖可拆卸连接；阀杆与球体连接，带动球体绕竖直轴线转动。The disc spring is located between the valve body and the valve seat assembly; the valve body is detachably connected to the valve cover; the valve stem is connected to the ball to drive the ball to rotate around the vertical axis.

所述进、出口阀座组件外壁上套入唇形密封圈，唇形密封圈与阀体接触。进、出口阀座组件圆柱表面加工环型槽，槽内设有石墨绳。A lip-shaped sealing ring is sleeved on the outer wall of the inlet and outlet valve seat components, and the lip-shaped sealing ring is in contact with the valve body. The cylindrical surface of the inlet and outlet valve seat components is processed with annular grooves, and graphite ropes are arranged in the grooves.

所述进、出口阀座组件沿大圆柱端面绕水平轴线加工一道圆弧凹槽。The inlet and outlet valve seat components are processed with an arc groove around the horizontal axis along the end face of the large cylinder.

所述球体沿竖直轴线设置上下两处圆柱轴，球体下圆柱轴插入阀体中，上圆柱轴插入阀杆中。The sphere is provided with two upper and lower cylindrical shafts along the vertical axis, the lower cylindrical shaft of the sphere is inserted into the valve body, and the upper cylindrical shaft is inserted into the valve stem.

所述球体下圆柱轴与阀体之间设置轴承，在阀体内腔底面与球体下凸台之间设置止推垫。A bearing is arranged between the lower cylindrical shaft of the sphere and the valve body, and a thrust pad is arranged between the bottom surface of the inner cavity of the valve body and the lower boss of the sphere.

所述球体上圆柱轴与阀盖之间设置轴承，球体顶部设置螺纹孔。A bearing is arranged between the cylinder shaft and the valve cover on the sphere, and a threaded hole is arranged on the top of the sphere.

所述阀盖底部加工一圈凸出的圆柱，阀杆底部的圆台与阀盖之间设有止推垫。A circle of protruding cylinders is processed at the bottom of the valve cover, and a thrust pad is provided between the round table at the bottom of the valve stem and the valve cover.

所述阀杆与阀盖之间设置唇形密封圈，轴承位于唇形密封圈下部。A lip sealing ring is arranged between the valve stem and the valve cover, and the bearing is located at the lower part of the lip sealing ring.

所述阀杆与阀盖之间设置填料，填料上部通过压套8压紧，填料下部设有填料垫。A packing is arranged between the valve stem and the valve cover, the upper part of the packing is pressed by the compression sleeve 8, and the lower part of the packing is provided with a packing pad.

所述阀门配置在线拆装工装，工装插销底部为圆锥形，四根插销固定在工装盘中。The valve is equipped with online assembly and disassembly tooling, the bottom of the pins of the tooling is conical, and four pins are fixed in the tooling plate.

本发明的显著效果是：球体与上下圆柱轴设计为一体，解决小口径固定球阀球体上开孔插入枢轴固定，而影响球体强度的问题。一体球上、下圆柱轴设计有利于保证竖直轴线上的同轴度，在介质压力作用下球体固定效果良好，能提高阀门使用密封效果，降低阀门扭矩。The remarkable effect of the invention is that the sphere is integrated with the upper and lower cylinder shafts, which solves the problem that the sphere of the small-diameter fixed ball valve is inserted into the pivot to fix it and affects the strength of the sphere. The design of the upper and lower cylindrical shafts of the integrated ball is beneficial to ensure the coaxiality on the vertical axis. Under the action of the medium pressure, the ball has a good fixing effect, which can improve the sealing effect of the valve and reduce the torque of the valve.

阀门配置的在线拆装工装，方便阀体在管路上实现在线维修。工装插销插入阀体内腔，插销外圆与阀座组件上一道圆弧凹槽接触，推动阀座组件向阀门两端部移动，使软阀座脱离球面，在阀座组件与球体之间形成间隙，方便球体拆出，在线拆装简单方便。The online disassembly and assembly tooling of the valve configuration facilitates online maintenance of the valve body on the pipeline. The tooling pin is inserted into the inner cavity of the valve, and the outer circle of the pin is in contact with an arc groove on the valve seat assembly, pushing the valve seat assembly to move to both ends of the valve, so that the soft valve seat is separated from the spherical surface, and a gap is formed between the valve seat assembly and the ball , to facilitate the disassembly of the sphere, and the disassembly and assembly online is simple and convenient.

附图说明Description of drawings

图1为一种小口径顶装式低温固定球阀结构示意图。Figure 1 is a schematic structural diagram of a small-diameter top-mounted low-temperature fixed ball valve.

图2为阀座组件示意图。Figure 2 is a schematic diagram of the valve seat assembly.

图3为球体结构示意图。Figure 3 is a schematic diagram of the sphere structure.

图4为在线拆装工装示意图。Figure 4 is a schematic diagram of online disassembly tooling.

图5为在线拆装示意图。Figure 5 is a schematic diagram of online disassembly.

图中：1阀体；2阀盖；3螺母；4螺柱；5隔热板；6轴承；7唇形密封圈；8填料压套；9石墨填料；10填料垫；11阀杆；12止推垫；13轴承；14密封垫；15唇形密封圈；16防火垫；17碟形弹簧；18阀座组件；19轴承；20止推垫22外壁；23圆弧凹槽；24软阀座；25上圆柱轴；26下圆柱轴；27下凸台；28螺纹孔；29接地弹簧；30、接地钢珠；31插销；32工装盘。In the figure: 1 valve body; 2 valve cover; 3 nut; 4 stud; 5 heat shield; 6 bearing; 7 lip seal ring; 8 packing gland; 9 graphite packing; Thrust pad; 13 bearing; 14 sealing pad; 15 lip seal ring; 16 fire protection pad; 17 disc spring; 18 valve seat assembly; 19 bearing; 20 thrust pad 22 outer wall; 25 upper cylindrical shafts; 26 lower cylindrical shafts; 27 lower bosses; 28 threaded holes; 29 grounding springs; 30, grounding steel balls; 31 latches; 32 tooling plates.

具体实施方式Detailed ways

结合本图及实施例对本发明作进一步说明。The present invention will be further described in conjunction with this figure and embodiments.

如图1所示，该固定球阀包括阀体1，在阀体1通道进口处安装进口端阀座组件18，在阀体1通道出口处安装出口端阀座组件18，两个阀座组件之间安装球体21，该球体21位于阀体通道中心处。As shown in Figure 1, the trunnion ball valve includes a valve body 1, an inlet-end valve seat assembly 18 is installed at the inlet of the valve body 1 channel, and an outlet-end valve seat assembly 18 is installed at the outlet of the valve body 1 channel. A spheroid 21 is installed between them, and the spheroid 21 is located at the center of the valve body channel.

碟形弹簧17位于阀体1与阀座组件18之间，碟形弹簧17提供预紧力推动阀座组件18压紧球体21，形成初始密封。The disc spring 17 is located between the valve body 1 and the valve seat assembly 18, and the disc spring 17 provides a pre-tightening force to push the valve seat assembly 18 to press the ball 21 to form an initial seal.

阀体1与阀盖2之间设置密封垫14，再通过螺柱4和螺母3形成可拆卸连接。A gasket 14 is arranged between the valve body 1 and the valve cover 2 , and a detachable connection is formed through the stud 4 and the nut 3 .

阀杆11穿过阀盖2中心孔与球体21连接，带动球体21绕竖直轴线转动，完成开关动作。The valve rod 11 passes through the central hole of the valve cover 2 and is connected with the ball 21, and drives the ball 21 to rotate around the vertical axis to complete the switching action.

如图2所示，进、出口阀座组件18外壁22上套入唇形密封圈15，唇形密封圈15与阀体1接触，形成阀体1与阀座组件18之间的密封。进、出口阀座组件18圆柱表面加工环型槽，槽内设有石墨绳16，软阀座24插入到带有倒刺的阀座槽中。As shown in FIG. 2 , a lip seal 15 is sleeved on the outer wall 22 of the inlet and outlet valve seat assembly 18 , and the lip seal 15 is in contact with the valve body 1 to form a seal between the valve body 1 and the valve seat assembly 18 . The cylindrical surface of inlet and outlet valve seat assembly 18 is processed with annular groove, and graphite rope 16 is arranged in the groove, and soft valve seat 24 is inserted into the valve seat groove with barbs.

如图3所示，球体21沿竖直轴线设置上下两处圆柱轴，球体21下圆柱轴26插入阀体1中，上圆柱轴25铣扁插入阀杆11中。球体下圆柱轴26与阀体1之间设置轴承，在阀体1内腔底面与球体21下凸台之间设置止推垫20。球体21上圆柱轴25与阀盖2之间设置轴承19，球体21顶部设置螺纹孔28。As shown in FIG. 3 , the sphere 21 is provided with two upper and lower cylindrical shafts along the vertical axis, the lower cylindrical shaft 26 of the sphere 21 is inserted into the valve body 1 , and the upper cylindrical shaft 25 is milled flat and inserted into the valve stem 11 . A bearing is arranged between the cylindrical shaft 26 under the ball and the valve body 1 , and a thrust pad 20 is arranged between the bottom surface of the inner cavity of the valve body 1 and the lower boss of the ball 21 . A bearing 19 is arranged between the cylindrical shaft 25 on the sphere 21 and the valve cover 2 , and a threaded hole 28 is arranged on the top of the sphere 21 .

如图1所示，阀盖2底部加工一圈凸出的圆柱，阀杆11底部的圆台与阀盖2之间设有止推垫12。As shown in FIG. 1 , a circle of protruding cylinders is processed at the bottom of the valve cover 2 , and a thrust pad 12 is provided between the round table at the bottom of the valve stem 11 and the valve cover 2 .

如图2、4、5所示，进、出口阀座组件18沿大圆柱端面绕水平轴线加工一道圆弧凹槽23，四根插销31固定在工装盘32中，在线维修时，将销31敲入阀腔，插销31外圆与阀座组件18上一道圆弧凹槽23接触，推动阀座组件18向阀门两端部移动，使软阀座24脱离球面，在阀座组件18与球体21之间形成间隙，方便球体21拆出。As shown in Figures 2, 4, and 5, the inlet and outlet valve seat assemblies 18 process a circular arc groove 23 around the horizontal axis along the large cylindrical end surface, and four pins 31 are fixed in the tooling plate 32. During online maintenance, the pins 31 Knock into the valve cavity, the outer circle of the pin 31 contacts with an arc groove 23 on the valve seat assembly 18, and pushes the valve seat assembly 18 to move to both ends of the valve, so that the soft valve seat 24 is separated from the spherical surface. A gap is formed between the 21 to facilitate the removal of the sphere 21 .

阀杆11与阀盖2之间设置唇形密封圈7，轴承6位于唇形密封圈7下部。阀杆11与阀盖2之间设置填料9，填料9上部通过压套8压紧，填料9下部设有填料垫10。唇形密封圈7与填料9形成双重阀杆密封，防止阀杆11处泄漏。A lip-shaped sealing ring 7 is arranged between the valve stem 11 and the valve cover 2 , and the bearing 6 is located at the lower part of the lip-shaped sealing ring 7 . A packing 9 is arranged between the valve stem 11 and the valve cover 2 , the upper part of the packing 9 is pressed by the pressure sleeve 8 , and the lower part of the packing 9 is provided with a packing pad 10 . The lip seal ring 7 and the stuffing 9 form a double valve stem seal to prevent leakage at the valve stem 11.

Claims (11)

1. The utility model provides a fixed ball valve of small-bore top-mounted low temperature, including valve body (1), valve gap (2), advance, export disk seat subassembly (18), spheroid (21), valve rod (11), valve gap (2) are located valve body (1) top, spheroid (21) are located valve body (1) passageway center department, advance, export end valve seat subassembly (18) include graphite rope (16) and soft disk seat (24), disk seat subassembly (18) link up with valve body (1), soft disk seat (22) in disk seat subassembly (18) are connected with the spheroid, valve rod (11) pass valve gap (2) and are connected with spheroid (21).
2. The small-caliber top-mounted low-temperature fixed ball valve according to claim 1, wherein the ball valve is characterized in that: the belleville spring (17) is positioned between the valve body (1) and the valve seat assembly (18); the valve body (1) is detachably connected with the valve cover (2); the valve rod (11) is connected with the ball body (21) to drive the ball body (21) to rotate around the vertical axis.
3. The small-caliber top-mounted low-temperature fixed ball valve according to claim 1, wherein the ball valve is characterized in that: the outer wall (22) of the inlet valve seat assembly (18) and the outer wall of the outlet valve seat assembly (18) are sleeved with a lip-shaped sealing ring (15), and the lip-shaped sealing ring (15) is contacted with the valve body. The cylindrical surfaces of the inlet valve seat assembly and the outlet valve seat assembly (18) are provided with annular grooves, and graphite ropes (16) are arranged in the grooves.
4. The small-caliber top-mounted low-temperature fixed ball valve according to claim 1, wherein the ball valve is characterized in that: the inlet and outlet valve seat assembly (18) is provided with an arc groove (23) along the end surface of the large cylinder around the horizontal axis.
5. The small-caliber top-mounted low-temperature fixed ball valve according to claim 1, wherein the ball valve is characterized in that: the ball body (21) is provided with an upper cylindrical shaft and a lower cylindrical shaft along a vertical axis, a lower cylindrical shaft (26) of the ball body (21) is inserted into the valve body (1), and an upper cylindrical shaft (25) is milled flat and inserted into the valve rod (11).
6. The small-caliber top-mounted low-temperature fixed ball valve according to claim 5, wherein the ball valve is characterized in that: a bearing (19) is arranged between the lower cylindrical shaft (26) of the ball body (21) and the valve body (1), and a thrust pad (20) is arranged between the bottom surface of the inner cavity of the valve body and the lower boss (27) of the ball body.
7. The small-caliber top-mounted low-temperature fixed ball valve according to claim 5, wherein the ball valve is characterized in that: a bearing (13) is arranged between the cylindrical shaft (25) on the ball body (21) and the valve cover (2), and a threaded hole (28) is arranged at the top of the ball body (21).
8. The small-caliber top-mounted low-temperature fixed ball valve according to claim 1, wherein the ball valve is characterized in that: a circle of protruding cylinder is processed at the bottom of the valve cover (2), and a thrust pad (12) is arranged between the round table at the bottom of the valve rod (11) and the valve cover.
9. The small-caliber top-mounted low-temperature fixed ball valve according to claim 8, wherein the ball valve is characterized in that: a lip-shaped sealing ring (7) is arranged between the valve rod (11) and the valve cover (2), and the bearing (6) is positioned at the lower part of the lip-shaped sealing ring (7).
10. The small-caliber top-mounted low-temperature fixed ball valve according to claim 8, wherein the ball valve is characterized in that: a packing (9) is arranged between the valve rod (11) and the valve cover (2), the upper part of the packing (9) is tightly pressed by a pressing sleeve (8), and a packing pad (10) is arranged at the lower part of the packing (9).
11. The small-caliber top-mounted low-temperature fixed ball valve according to claim 1, wherein the ball valve is characterized in that: the valve is configured on-line dismounting tool, the bottom of the tool bolt (31) is conical, and four bolts (31) are fixed in a tool disc (32).
CN202111314060.7A 2021-11-08 2021-11-08 Small-caliber top-mounted low-temperature fixed ball valve Active CN116085489B (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201129496Y (en) * 2007-07-26 2008-10-08 上海凯工阀门有限公司 Upper mounting type ball valve
CN205047888U (en) * 2015-09-18 2016-02-24 苏州道森阀门有限公司 Self -align top mounted formula ball valve of combination disk seat direction
CN107202176A (en) * 2017-08-02 2017-09-26 上海凯工阀门股份有限公司 Formula ultralow temperature fixing ball valve is filled in one kind
US20170299070A1 (en) * 2016-04-16 2017-10-19 Amit Shah Top entry trunnion ball valve suitable for safe in-line maintenance and method to facilitate such maintenance
CN111745587A (en) * 2019-03-29 2020-10-09 中核苏阀科技实业股份有限公司 Top Entry Ball Valve Seat Installation Tooling
CN112344051A (en) * 2020-12-07 2021-02-09 江苏神通阀门股份有限公司 Cryogenic upper-mounted ball valve and assembling method thereof
CN113007379A (en) * 2021-03-01 2021-06-22 浙江伯特利科技股份有限公司 Top-mounted ball valve and assembling tool and process thereof
CN214331545U (en) * 2020-12-24 2021-10-01 苏州合能工业设备有限公司 Sealing structure of top-mounted ultralow-temperature ball valve
CN113551053A (en) * 2021-07-22 2021-10-26 西诺威阀门控制（苏州）有限公司 Ultra-low temperature top-mounted fixed ball valve

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201129496Y (en) * 2007-07-26 2008-10-08 上海凯工阀门有限公司 Upper mounting type ball valve
CN205047888U (en) * 2015-09-18 2016-02-24 苏州道森阀门有限公司 Self -align top mounted formula ball valve of combination disk seat direction
US20170299070A1 (en) * 2016-04-16 2017-10-19 Amit Shah Top entry trunnion ball valve suitable for safe in-line maintenance and method to facilitate such maintenance
CN107202176A (en) * 2017-08-02 2017-09-26 上海凯工阀门股份有限公司 Formula ultralow temperature fixing ball valve is filled in one kind
CN111745587A (en) * 2019-03-29 2020-10-09 中核苏阀科技实业股份有限公司 Top Entry Ball Valve Seat Installation Tooling
CN112344051A (en) * 2020-12-07 2021-02-09 江苏神通阀门股份有限公司 Cryogenic upper-mounted ball valve and assembling method thereof
CN214331545U (en) * 2020-12-24 2021-10-01 苏州合能工业设备有限公司 Sealing structure of top-mounted ultralow-temperature ball valve
CN113007379A (en) * 2021-03-01 2021-06-22 浙江伯特利科技股份有限公司 Top-mounted ball valve and assembling tool and process thereof
CN113551053A (en) * 2021-07-22 2021-10-26 西诺威阀门控制（苏州）有限公司 Ultra-low temperature top-mounted fixed ball valve

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